CN102875000A - Sludge drying chamber - Google Patents
Sludge drying chamber Download PDFInfo
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- CN102875000A CN102875000A CN2011101975698A CN201110197569A CN102875000A CN 102875000 A CN102875000 A CN 102875000A CN 2011101975698 A CN2011101975698 A CN 2011101975698A CN 201110197569 A CN201110197569 A CN 201110197569A CN 102875000 A CN102875000 A CN 102875000A
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- 239000010802 sludge Substances 0.000 title claims abstract description 153
- 238000001035 drying Methods 0.000 title claims abstract description 115
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 34
- 238000007599 discharging Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 238000010438 heat treatment Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 7
- 230000007246 mechanism Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000084 colloidal system Substances 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 206010013786 Dry skin Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000007791 dehumidification Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000010801 sewage sludge Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Treatment Of Sludge (AREA)
Abstract
The invention relates to a sludge drying chamber, which comprises working medium air introducing ports (10), working medium air ducts (11) and a sludge dryer (6). The invention is characterized in that: the number of the working medium air introducing ports (10) is two or over two, and the temperature of the working medium air in at least one of working medium air introducing ports (10) is different from the temperature of the working medium air in other working medium air introducing ports (10). Sludge with different humidity can be heated by the working medium air at different temperatures, so that the sludge drying effect can be improved comprehensively.
Description
Technical field
The present invention relates to a kind of sludge drying chamber, particularly relate to the sludge drying chamber that improves the heat integration rate.
Background technology:
Drying sludge is the process of a Net Energy expenditure, and energy charge is used in the standard dehumidification system and accounts for the ratio of running cost greater than 80%.Therefore sludge treatment belongs to the highly energy-consuming industry, and the energy is the important substance basis of national economy, and it directly has influence on national security, Sustainable development and social stability.In sludge handling process, reduce energy consumption, enhanced heat exchange, put forward high-octane utilization ratio and become subject matter.Both alleviated the economical load of country to sludge treatment, and again the recycling of energy in the mud had positive pushing effect, development prospect is wide.
In the at present existing sludge drying device, no matter be that direct type or indirect type all are to adopt thermal source directly to pass into sludge-drying in the drying plant.Ignore mud and be interrupted in the different qualities that shows and the mud characteristic with the multi-form moisture that exists at each of drying.For example, when the humidity of mud is larger, if adopt the working medium air heating of high temperature, although dry speed is high, because wet amount is large, need very large heat energy, and obtaining of high temperature refrigerant air need to consume more, the energy of high-quality more, is a kind of drying mode of poor efficiency so do like this; And the working medium air of employing lesser temps, as the working medium air that adopts heat pump goes to heat mass dryness fraction during higher mud, almost can't therefrom take away moisture content, consume a lot of working medium air and but can't reach dry purpose, the result who causes is the waste of large energy.How according to the demand of drying sludge, comprehensive efficient realization drying effect just becomes problem anxious to be resolved.
Summary of the invention:
The present invention is exactly in order to solve the above problems, and provides a kind of humidity according to mud different, the difference of its dry demand, and the working medium air of employing differing temps improves the sludge drying chamber of comprehensive drying efficiency; On the other hand, the hot and humid gas that utilizes sludge-drying to produce according to its actual drying power, carries out drying to wetter mud, further improves the efficient of drying sludge.
Concrete, the invention provides a kind of sludge drying chamber, described sludge drying chamber comprises the intake 10 of working medium air, air channel 11 and the sludge dryer 6 of working medium air, the quantity that it is characterized in that described working medium air intake 10 is more than two and two, and has at least a working medium air intake 10 interior working medium air themperature to be different from the temperature of the working medium air of other working medium air intakes 10.
Described working medium air intake 10 is transported to mud 4 places of humidity different on the sludge dryer 6 through air channel 11.
Described working medium air is according to the different corresponding dry different mud 4 of temperature, the little mud 4 of working medium dry air water content that temperature is high, the large mud 4 of working medium dry air water content that temperature is low.
Described working medium air has different temperature, and the working medium air further heats up by interchanger 21 is set, and obtains the high working medium air of temperature.
The mud 4 of described working medium dry air different humidity, the mud 4 that water content is large adopts temperature low, the working medium dry air that air quantity is large; The mud 4 that water content is little adopts temperature high, the working medium dry air that air quantity is little.
Described sludge dryer 6 comprises travelling belt 5 and the working medium air vent 12 of drying to travelling belt 5, described travelling belt 5 is arranged according to upper-lower position, the air channel 11 of each travelling belt 5 and correspondence is in different zones, interval 8 is arranged between the regional, on the described interval 8 passage 9 is arranged, the described top travelling belt 5 that is positioned at is toppled over mud by the passage 9 downward one deck travelling belts 5 on the interval 8.
The damp-heat air of described working medium dry air mud 4 rear generations is delivered to damp-heat air relief outlet 16 by wind channel 15, discharges sludge drying chamber 1.
Described passage 9 has damp-heat air to pass through, and the damp-heat air of processing the little sludge creation of water content flows through described passage 9, enters the zone of processing the high mud of humidity, finally discharges sludge drying chamber 1 by damp-heat air exhaust outlet 3.
Also be provided with minute branch air duct 22 on the described wind channel 15, this minute, branch air duct 22 was communicated with the air channel 11 of sludge dryer 6 correspondences of high humidities, be provided with air-valve 23 on the described minute branch air duct 22, the air-supply side in wind channel 15 and the junction of minute branch air duct 22 is provided with air-valve 20; And air-valve 20 and air-valve 23 are interlocked relationship, and when air-valve 20 was opened, air-valve 23 cut out, and when air-valve 20 cut out, air-valve 23 was opened.
The condition that air-valve 23 on described minute branch air duct 22 is opened is: when the mud humidity following sludge dryer 6 in less than 55% the time, simultaneously above the interior mud humidity of sludge dryer 6 greater than 60%; The condition that air-valve 23 on described minute branch air duct 22 cuts out is: when the mud humidity in the following sludge dryer 6 more than or equal to 55% the time, perhaps above mud humidity in the sludge dryer 6 less than or equal to 60%.
The condition that air-valve 23 on described minute branch air duct 22 is opened is: the relative humidity of the damp-heat air of discharging when following sludge dryer 6 is below 80%, and this humidity is lower than the humidity of the mud in the top sludge dryer 6; The condition that air-valve 23 on described minute branch air duct 22 cuts out is: when the relative humidity of the damp-heat air that following sludge dryer 6 is discharged 80% and more than, perhaps the humidity of damp-heat air is equal to or higher than the humidity of the mud in the top sludge dryer 6.
According to sludge dryer provided by the invention, can remove the large mud of dry water capacity by the working medium air of low drying temperature Wind Volume, remove the little mud of dry water capacity by the working medium air than high dry temperature, by improving dry efficient, so that whole production line can with certain speed operation, improve the drying efficiency of whole moisture eliminator.
In addition, because mud is in the difference of stages water content, by interval 8 different subregions is set, adopt the working medium dry air mud of differing temps at different subregions, the high-temperature zone inner drying is the less mud of water content simultaneously, the relative humidity of the damp-heat air out is not too large, and certain temperature is arranged, and is passing into cryodrying district continuation sludge-drying.
Description of drawings
Fig. 1 is the sludge drying chamber schematic diagram of the embodiment of the invention one;
Fig. 2 is the sludge drying chamber schematic diagram of the embodiment of the invention two;
Fig. 3 is the sludge drying chamber schematic diagram of the embodiment of the invention three;
Fig. 4 is the sludge drying chamber schematic diagram of the embodiment of the invention four;
Fig. 5 is the sludge drying chamber schematic diagram of the embodiment of the invention five;
Fig. 6 is the schematic diagram that different humidity needs heat in the drying sludge process.
Wherein: 1 is sludge drying chamber, and 2 are wet mud entrance; 3 is the total exhaust outlet of damp-heat air; 4 is the mud on the travelling belt; 5 is travelling belt; 6 is sludge dryer; 7 is the mud relief outlet; 8 is the interval; 9 is passage; 10 is working medium air intake; 11 is the air channel; 12 is the working medium air vent; 13 is the damp-heat air flow direction; 14 is the working medium air-flow direction; 15 is wind channel; 16 is exhaust outlet; 17 is the air inducing blower fan; 18 is the mud storing plate; 19 is total exhaust blower; 20 is the air-valve on the wind channel; 21 is interchanger; 22 are a minute branch air duct, and 23 are the air-valve on minute branch air duct.
Embodiment
Come technical scheme of the present invention is further specified below by specific embodiment.
Embodiment one
As shown in Figure 1, sludge drying chamber 1 comprises a plurality of working medium air intakes 10, a plurality of working medium air are introduced air channel 11, sludge dryer 6, damp-heat air exhaust outlet 3, wherein, the working medium air flows along working medium air-flow direction 14, enters sludge drying chamber 1 through working medium air intake 10, through heat drying mud in sludge dryer 6, the damp-heat air that forms leaves sludge dryer 6 according to damp-heat air flow direction 13, and discharges sludge drying chamber 1 from damp-heat air exhaust outlet 3; Wherein the working medium air themperature introduced in the air channel 11 of three working medium air is different, heats the mud in one of them sludge dryer.Also namely, sludge drying chamber 1 comprises at least two and plural working medium air intake, and has at least the working medium air themperature of a working medium air intake to be different from the temperature of the working medium air of other working medium air intakes.Sludge dryer 6 can be the fluidized-bed sludge drying mechanism by the working medium air directly or indirect heating mud in the present invention, and the working medium air carries out drying by the air port of this device bottom to the mud grain in the fluidized-bed, thereby reaches dry purpose; Can be the disc type sludge drying mechanism also, long drying sludge passage is arranged, the working medium air be in this passage, with the heat exchange of mud reversed flow; Can also be the hollow paddle type sludge drying installation, by blade stirring mud, by passing into the working medium air in the air channel in blade, when stirring, heat and drying.Above these drying installations can also can be used as the combination of a plurality of sludge dryers 6 in the present invention as sludge dryer 6, and but being not limited to these devices, every drying installation direct by the working medium air or indirect heating mud can.In embodiment one, sludge drying mechanism 6 can be one of a plurality of sludge drying mechanisms, adopts the working medium air of differing temps at a plurality of sludge drying mechanisms 6; Sludge dryer 6 also can be the part of a cover sludge drying mechanism, and namely this cover sludge drying mechanism comprises a plurality of sludge dryers 6, and adopts the working medium air of differing temps at a plurality of sludge dryers 6.
Need to need the more stage of heat in difficult dry stage or drying to sludge dryer, adopt the higher working medium air of temperature to raise the efficiency.In conjunction with Fig. 1 and Fig. 2, the part among Fig. 2 in the dotted line frame is sludge dryer 6, comprises mud travelling belt 5, be in the mud 4 on the travelling belt 5 and be connected on the air channel 11, and to the air port 12 of mud 4 air-supplies.Mud 4 blows the working medium air by the air port 12 that is arranged on the travelling belt to mud, heat drying mud on travelling belt 5.Further, three air channels 11 of upper, middle and lower are arranged among Fig. 2, enter sludge drying chamber 1 through working medium air intake 11, remove respectively dry mud 4 on three travelling belts 5 of upper, middle and lower, also can think the mud in the sludge dryer 6.Can find out wet sludge handling process among Fig. 2, the wettest mud enters kiln 1 from the wet mud entrance 2 on kiln 1 top, drop on the uppermost travelling belt 5, dry through 11 air-supplies of uppermost air channel, slowly move on to the right side from the left side of travelling belt 5, on the travelling belt 5 in the middle of falling into, dry through 11 air-supplies of middle air channel, slowly move on to the left side from the right side of travelling belt 5, fall on the following travelling belt 5, dry through 11 air-supplies of following air channel, slowly move on to the right side from the left side of travelling belt 5, fall in the sewage sludge storage dividing plate 18, finally dried mud is discharged sludge drying chambers 1 from mud relief outlet 7.
Namely the mud at uppermost travelling belt 5 is the wettest mud, when mud humidity is larger, more moisture content is arranged between solid matter, and the working medium air lower with temperature just can heat, and faster moisture content taken away; Mud on nethermost travelling belt is more dried mud, after the humidity of mud reduces, mainly be the moisture content of solid particulate inside, if adopt the low working medium air of temperature, almost can't therefrom get rid of moisture content, it is very low that the translational speed of this travelling belt will become, thereby affect the travelling speed of whole sludge drying chamber, and by increasing the temperature of working medium air, can get rid of faster the moisture content in the mud granule, be conducive to efficient and the equilibrium of whole sludge drying chamber heating, indoor all of drying sludge are transmitted with higher travelling speed.
In sludge drying chamber shown in Figure 21, the temperature of the working medium air in the following air channel 11 will be higher than the temperature of the working medium air in the middle and top air channel 11, the more dried mud of working medium air heating of the comparatively high temps like this in the air channel 11, heating efficiency than cryogenic fluid air is high, thereby has improved the efficient of whole sludge drying chamber; The temperature of the working medium air in the top air channel 11 will be lower than the temperature of the working medium air in the middle and following air channel 11, because the working medium air of lesser temps just can effectively heat the mud with dry high humidity, simultaneously, because the working medium air ratio of lesser temps is easy to obtain, particularly can obtain by heat pump, because the heating efficiency of heat pump is higher, only need a small amount of high-grade energy just can obtain several times heat energy, so from the energy that drops into and the drying effect of obtaining, the larger mud of humidity has higher efficient with the working medium dry air of lesser temps, namely can pass through less Energy input, obtain the dehydrating amount of larger mud.
In sum, the working medium air of differing temps is transported to the mud place of different humidity through the air channel, particularly, the working medium air is according to the different corresponding dry different mud of temperature, the little mud of working medium dry air water content that temperature is high, the large mud of working medium dry air water content that temperature is low.In specification sheets, the meaning that water content is larger is the amount of contained moisture content in the mud of unit weight; The humidity of mud refers to the relative humidity of mud, and the sludge moisture content of mud ingress is 100%, and the ratio of the sludge moisture content of the water content of current mud and 100% water content is the water content of current mud.
Embodiment two
As shown in Figure 2, the present embodiment and embodiment one difference are, concrete, the sludge dryer 6 that the present embodiment adopts comprises travelling belt 5 and the air port 12 of drying to travelling belt, the working medium air blows on the mud 4 by air port 12, behind working medium air heating and the sludge-drying 4, forms damp-heat air, final damp-heat air flows to total exhaust outlet 3 according to damp-heat air flow direction 13 indicated directions, discharges sludge drying chamber 1 through total exhaust blower 19.Wet mud enters sludge drying chamber 1, and describes in embodiment one in the indoor transportation of drying sludge, heating and dry process, and this place no longer repeats.
In addition, in the present embodiment, different working medium air themperature is to be provided with interchanger 21 by the air channel 11 below needing high temperature air working medium, further heat by 21 pairs of working medium air of interchanger, so that the working medium air in this air channel 11 further heats up, obtain the high working medium air of temperature on original temperature basis.
In addition, in the present embodiment, dry different humidity mud as required, the mud that water content is large adopts the low working medium air of temperature, by the large working medium dry air mud of air quantity; The mud that water content is little adopts the high working medium air of temperature, by the little working medium dry air mud of air quantity.For the large mud of water content, mainly make dry progress reach the production schedule of sludge drying chamber by the air quantity that improves the working medium air, for the little mud of water content, mainly make dry progress reach the production schedule of sludge drying chamber by the temperature that improves the working medium air.
In addition, because travelling belt 5 is arranged according to upper-lower position, the air channel 11 of each travelling belt 5 and correspondence is in different zones, be provided with interval 8 between the adjacent zone, passage 9 is arranged on the interval 8, be positioned at top travelling belt 5 and topple over through the mud after the processing of one's respective area by the passage 9 downward one deck travelling belts 5 on the interval 8.As shown in Figure 2, because mud relief outlet 7 is in closing condition when normal operation, so the air channel 11 in following zone continues to send in the situation of working medium air, zone in the middle of the damp-heat air in bottom zone can enter along damp-heat air flow direction 13 through passage 9, and, compile the zone of damp-heat air above damp-heat air flow direction 13 enters that region intermediate produces, and then the damp-heat air that compiles the upper zone generation is discharged sludge drying chambers 1 by damp-heat air exhaust outlet 3 through total exhaust blower 19.That is, the damp-heat air of processing the low sludge creation of water content flows through passage 9, enters the zone of processing the large mud of water content, finally discharges sludge drying chamber by damp-heat air exhaust outlet 3.
Because the sludge moisture content of lower region is little, and the temperature of working medium air is high, so the temperature of its damp-heat air is higher, and water capacity is smaller, can't pollute and affect the drying sludge situation of middle and upper zone, and such setting can not make the downward surface current of the larger damp-heat air of humidity moving, has guaranteed the mud that damp-heat air can not pollute or the humidification water content is little.
In addition, the heat form of working medium air is that middle air channel and air channel, bottom adopt common interchanger to bring up to certain temperature in the present embodiment, the temperature of working medium air is further improved again in the air channel, bottom through interchanger, the temperature that has so just formed the working medium air in three air channels of upper, middle and lower is different, and the situation of ladder rising.Be conducive to make the working medium air themperature in middle and following air channel that certain temperature difference is arranged, guarantee that two drying sludges in the zone have higher efficient.
All the other are not stated and partly see embodiment one for details, no longer repeat.
Embodiment three
As shown in Figure 3, the difference of the present embodiment and embodiment two is, the heat form of working medium air is that interchanger 21 is separately adopted respectively in middle air channel and air channel, bottom, and also the temperature of the working medium air in namely middle air channel and the following air channel is determined by the requirement of its technique.Being illustrated in figure 6 as different humidity in the drying sludge process needs the schematic diagram of heat, and X-coordinate is mud humidity W, and coordinate figure is the ratio of actual water content and total water content (100%); Ordinate zou is the energy Q that sludge-drying needs, unit is kilowatt per hour, this kind mud is in the intermediate moisture situation, concrete is when water capacity 35-60%, because mud granule and water have formed similar colloid, so the dry heat that needs can be higher than water capacity less than 35% and water capacity high with 60% situation, the present embodiment is when this mud of drying, the temperature in middle air channel can be higher than the temperature in following air channel, in order to accelerate the mud of dry this similar colloid, thereby improve the comprehensive drying efficiency of sludge drying chamber 1.
All the other are not stated and partly see embodiment two for details, no longer repeat.
Embodiment four
As shown in Figure 4, the difference of the present embodiment and embodiment three is, be provided with wind channel 15 on travelling belt 5 next doors, after 17 suctions of air inducing blower fan, damp-heat air is discharged sludge drying chamber 1 from exhaust outlet 16 to the damp-heat air that produces behind the working medium dry air mud by wind channel 15.Can effectively utilize like this space in the sludge drying chamber 1, the mutual pollution of stopping damp-heat air fully.
All the other are not stated and partly see embodiment three for details, no longer repeat.
Embodiment five
As shown in Figure 5, the difference of the present embodiment and embodiment four is, travelling belt 5 next doors below humidity is little are provided with wind channel 15, wind channel 15 is discharged sludge drying chamber 1 to damp-heat air except being provided with exhaust outlet 16, also has a minute branch air duct 22, this minute, branch air duct 22 made damp-heat air be discharged to the air channel 11 corresponding to upper belt of high humidity, with the working medium air mixed at this place, improved the ability of its heat drying mud.As shown in Figure 5, be provided with air-valve 23 at a minute branch air duct 22, the air-supply side in wind channel 15 and the junction of minute branch air duct 22 is provided with air-valve 20, is used for the flow direction of the control damp-heat air that produces on the following travelling belt.Air-valve 23 on minute branch air duct 22 cuts out, when the air-valve 20 on the wind channel 15 is opened, below the damp-heat air that produces of sludge dryer 6 discharge outside the sludge drying chambers 1 through exhaust outlet 16; Air-valve 23 on minute branch air duct 22 is opened, when the air-valve 20 on the wind channel 15 cuts out, below the damp-heat air that produces of sludge dryer 6 by a minute branch air duct 22, enter into the air channel 11 corresponding to upper belt of high humidity.That is, and the air-valve 23 on the air-valve on the wind channel 15 20 and minute branch air duct 22 be interlocked relationship, and when air-valve 20 was opened, air-valve 23 cut out, when air-valve 20 cuts out, and air-valve 23 unlatchings.
Because higher than the damp-heat air outflow temperature of sludge-drying below the heating, and, because less than the moisture content that can discharge in the sludge-drying, and the damp-heat air that forms has the ability of higher temperature and higher absorption moisture content, particularly, low for the wet mud temperature in the top sludge dryer, high humidity, its heating and dry higher temperature and the large air quantity of needing.And the damp-heat air that following sludge dryer is discharged can improve the temperature of working medium air in the top air channel on the one hand, can improve the air quantity in the air channel simultaneously, further improves the efficient of drying sludge.
In the present embodiment, mud humidity below is below 45%, the humidity of the damp-heat air that produces behind the working medium dry air mud of high temperature is less than 40%, this damp-heat air is according to damp-heat air direction 13, deliver in the top air channel 11 by a minute branch air duct 22, after its working medium air mixed, be used for dry above the wettest mud in the sludge dryer 6, the mud humidity at this place is more than 70%.The damp-heat air that attracts from below has improved the air themperature that enters sludge dryer 6 on the one hand, has improved on the other hand the air quantity that enters sludge dryer 6, can improve significantly the heat drying efficient of sludge dryer 6.
But when the mud humidity of following sludge dryer 6 dryings was larger, the temperature of the damp-heat air of generation can be lower, and the humidity of the damp-heat air that produces can be larger, just the mud in the top sludge dryer do not carried out the value of drying.So, need to indirectly draw by the humidity of judging the indoor mud of following drying sludge, whether the damp-heat air of its generation is suitable carries out drying to top mud.As shown in this embodiment, the damp-heat air of high temperature is to be used for the wet mud of heating satisfying under the certain condition, thereby improves the whole efficiency of drying sludge.Through the test and study analysis, when the mud humidity in the following sludge dryer 6 less than 55% the time, mud humidity simultaneously in the sludge dryer 6 is greater than 60% the time, open the air-valve 23 on minute branch air duct 22, the air-supply side of closing the junction of wind channel 15 and minute branch air duct 22 is provided with air-valve 20, makes the damp-heat air that produces in the following sludge dryer 6 enter into the air channel 11 of top sludge dryer 6 correspondences; When the mud humidity in the following sludge dryer 6 more than or equal to 55% the time, perhaps the mud humidity in the top sludge dryer 6 is less than or equal to 60% the time, air-valve 23 on the close fork air channel 22, open the air-valve 20 on the wind channel 15, make the damp-heat air that produces in the following sludge dryer 6 discharge sludge drying chamber 1 by exhaust outlet 16.Can better improve so controlled, the pollution of avoiding producing humidity.
All the other are not stated and partly see embodiment four for details, no longer repeat.
Embodiment six
The difference of the present embodiment and embodiment five is, it is that relative humidity by judging damp-heat air realizes that damp-heat air that sludge dryer 6 is discharged below its control flows to.The relative humidity of the damp-heat air of discharging when following sludge dryer 6 is more than 80%, air-valve 23 on the close fork air channel 22, open the air-valve 20 on the wind channel 15, make the damp-heat air that produces in the following sludge dryer 6 discharge sludge drying chamber 1 by exhaust outlet 16; The relative humidity of the damp-heat air of discharging when following sludge dryer 6 is below 80%, and when this humidity is lower than the humidity of the mud in the top sludge dryer 6, open the air-valve 23 on minute branch air duct 22, the air-supply side of closing the junction of wind channel 15 and minute branch air duct 22 is provided with air-valve 20, makes the damp-heat air that produces in the following sludge dryer 6 enter into the air channel 11 of top sludge dryer 6 correspondences.Can directly assess like this ability of the mud in the sludge dryer 6 that participates in above the drying, effectively take full advantage of heat and the wettability power of damp-heat air, improve the drying efficiency of sludge drying chamber 1.Relative humidity judgement by air is easy to detect, and the current psychromatic ratio of mud is more difficult to get direct detected value, the reckoning value error that perhaps obtains is larger, so the relative humidity by air is judged, can directly draw by Hygrothermograph, perhaps read by the sensor of humiture, be convenient to controller judgement and control.
All the other are not stated and partly see embodiment five for details, no longer repeat.
Claims (11)
1. sludge drying chamber, described sludge drying chamber comprises the intake (10) of working medium air, air channel (11) and the sludge dryer (6) of working medium air, the quantity that it is characterized in that described working medium air intake (10) is more than two and two, and has at least the interior working medium air themperature of a working medium air intake (10) to be different from the temperature of the working medium air of other working medium air intakes (10).
2. sludge drying chamber according to claim 1 is characterized in that described working medium air intake (10) mud (4) that (11) are transported to the upper different humidity of sludge dryer (6) through the air channel locates.
3. sludge drying chamber according to claim 1, it is characterized in that described working medium air is according to the different corresponding dry different mud (4) of temperature, the mud (4) that the working medium dry air water content that temperature is high is little, the mud (4) that the working medium dry air water content that temperature is low is large.
4. sludge drying chamber according to claim 1 is characterized in that described working medium air has different temperature, and the working medium air further heats up by interchanger (21) is set, and obtains the high working medium air of temperature.
5. sludge drying chamber according to claim 1 is characterized in that the mud (4) of described working medium dry air different humidity, and the mud that water content is large (4) adopts temperature low, the working medium dry air that air quantity is large; The mud that water content is little (4) adopts temperature high, the working medium dry air that air quantity is little.
6. each described sludge drying chamber according to claim 1-6, it is characterized in that described sludge dryer (6) comprises travelling belt (5) and the working medium air vent (12) of drying to travelling belt (5), described travelling belt (5) is arranged according to upper-lower position, the air channel (11) of each travelling belt (5) and correspondence is in different zones, interval (8) is arranged between the regional, passage (9) is arranged on the described interval (8), and the described top travelling belt (5) that is positioned at is toppled over mud by the downward one deck travelling belt (5) of the passage (9) on interval (8).
7. each described sludge drying chamber according to claim 1-6, the damp-heat air that it is characterized in that the rear generation of described working medium dry air mud (4) is delivered to damp-heat air relief outlet (16) by wind channel (15), discharges sludge drying chamber (1).
8. sludge drying chamber according to claim 7, it is characterized in that described passage (9) has damp-heat air to pass through, the damp-heat air of processing the little sludge creation of water content flows through described passage (9) and enters the zone of processing the high mud of humidity, finally discharges sludge drying chamber (1) by damp-heat air exhaust outlet (3).
9. sludge drying chamber according to claim 8, it is characterized in that also being provided with on the described wind channel (15) a minute branch air duct (22), this minute branch air duct (22) is communicated with the air channel (11) corresponding to sludge dryer (6) of high humidity, be provided with air-valve (23) on described minute branch air duct (22), the air-supply side in wind channel (15) and the junction of minute branch air duct (22) is provided with air-valve (20); And air-valve (20) and air-valve (23) are interlocked relationship, and when air-valve (20) was opened, air-valve (23) cut out, and when air-valve (20) when closing, air-valve (23) is opened.
10. sludge drying chamber according to claim 10, it is characterized in that the condition that the air-valve (20) on described minute branch air duct (22) is opened is: when the mud humidity following sludge dryer (6) in less than 55% the time, simultaneously above the interior mud humidity of sludge dryer (6) greater than 60%; The condition that air-valve (20) on described minute branch air duct (22) cuts out is: when the mud humidity in the following sludge dryer (6) more than or equal to 55% the time, perhaps above mud humidity in the sludge dryer (6) less than or equal to 60%.
11. sludge drying chamber according to claim 10, it is characterized in that the condition that the air-valve (23) on described minute branch air duct (22) is opened is: the relative humidity of the damp-heat air of discharging when following sludge dryer (6) is below 80%, and this humidity is lower than the humidity of the mud in the top sludge dryer (6); The condition that air-valve (23) on described minute branch air duct (22) cuts out is: when the relative humidity of the damp-heat air that following sludge dryer (6) is discharged 80% and more than, perhaps the humidity of damp-heat air is equal to or higher than the humidity of the mud in the top sludge dryer (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101975698A CN102875000A (en) | 2011-07-12 | 2011-07-12 | Sludge drying chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101975698A CN102875000A (en) | 2011-07-12 | 2011-07-12 | Sludge drying chamber |
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| CN107285590A (en) * | 2017-06-16 | 2017-10-24 | 山东琦泉能源科技有限公司 | Unpowered drive-type sludge dry system and its control method |
| CN107986601A (en) * | 2017-12-29 | 2018-05-04 | 天津远新环保科技有限公司 | A kind of sludge treating system |
| CN108409367A (en) * | 2018-06-14 | 2018-08-17 | 盛正茂 | A kind of bio-bacterial manure drying unit |
| CN109734278A (en) * | 2018-10-17 | 2019-05-10 | 杭州川恩环保技术有限公司 | A kind of sludge at low temperature drying process and sludge at low temperature drying machine |
| CN110422987A (en) * | 2019-07-05 | 2019-11-08 | 苏州鑫达资源再生利用有限公司 | A kind of drying method for sludge and sludge drying mechanism |
| CN118234689A (en) * | 2021-11-08 | 2024-06-21 | 三星电子株式会社 | Sludge treatment equipment and excrement treatment equipment including the same |
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| CN108409367B (en) * | 2018-06-14 | 2021-05-25 | 郑美花 | Fertile drying device of biological fungus |
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| CN110422987A (en) * | 2019-07-05 | 2019-11-08 | 苏州鑫达资源再生利用有限公司 | A kind of drying method for sludge and sludge drying mechanism |
| CN118234689A (en) * | 2021-11-08 | 2024-06-21 | 三星电子株式会社 | Sludge treatment equipment and excrement treatment equipment including the same |
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Application publication date: 20130116 |