JP2009285634A - Device of drying slurry material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device of drying slurry material relatively simply and efficiently. <P>SOLUTION: The device of drying slurry material is a device used for drying slurry material by utilizing a pulse combustion device in which fuel injection nozzles and slurry material injection nozzles are disposed in parallel to each other, wherein the fuel injection nozzles are arranged in a plurality of stages in parallel in the vertical direction, and the slurry material injection nozzles are disposed so as to be sandwiched between the stages of the vertical direction of the fuel injection nozzles of the plurality of stages arranged in the vertical direction. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a slurry material drying apparatus.

Slurry material containing a large amount of moisture, for example, slurry-like shochu containing a large amount of water (85 to 97% by weight) generated in the production process of shochu has a high biochemical oxygen demand and is directly poured into water. In addition, since the amount of oxygen in the water is reduced, the ecosystem is disturbed, and methane gas causes bad odors, direct disposal into rivers and the sea is prohibited.
Therefore, proper processing or disposal of the shochu produced in large quantities with the production of shochu is a bigger problem than ever in the shochu production industry.

In recent years, effective use methods have been proposed without discarding the shochu. For example, a method of drying shochu to feed cows, pigs, etc. There are ways to make it an effective product.
With the widespread use of shochu by such a method, it is not necessary to dispose of shochu and environmental pollution can be prevented.
However, any of the above methods requires drying the shochu. It is very difficult to easily and efficiently dry a slurry-like material that contains a lot of water such as shochu, and the conventional technique for drying such a slurry-like material is drying after dehydration. The method of making it dry, the method of drying by heating, etc. are common.
As a method of drying the slurry-like material after dehydrating, for example, in Japanese Patent Laid-Open No. 01-196286, “(i) Shochu effluent is passed through a dehydrator to separate into liquid and solid, (b) separating. The liquid is passed through a filter using carbonized valve sludge powder as a filtering material. (C) The solids are recycled as feed through a dryer. It is disclosed.
In addition, as a method for drying by heating, Japanese Patent Publication No. 57-3431 discloses, “The moromi waste liquid is concentrated by heating with a rotating coil, neutralized, and then dried on a drying drum. A method for treating moromi waste liquid, which is scraped from the surface, is disclosed.

On the other hand, as a method for treating slurry-like materials, such as biological waste (food waste such as garbage and collected manure), the slurry is brought into contact with pulse combustion gas fed from a pulse combustor, and the slurry is dried powder. A method of making water vapor is also proposed.
For example, in Japanese Patent Laid-Open No. 2001-87737,
“Pulsed combustion in which slurry prepared by mixing food residue pulverized product with at least one of collected waste and collected septic tank sludge to have a viscosity of 500 cP (centipoise) or less is provided at the top of a vertical cylindrical drying chamber Combustion exhaust gas containing dry powder from the bottom of the drying chamber and water vapor from the bottom side of the drying chamber is brought into contact with the pulse combustion gas fed downward from the vessel and converted into dry powder and water vapor under conditions of the drying chamber temperature of 120 ° C to 190 ° C. "A method for treating biological waste comprising extraction".
Japanese Patent Laid-Open No. 01-196286 Japanese Patent Publication No.57-3431 JP 2001-87737 A

  However, the conventional method of dehydrating the slurry as disclosed in JP-A-01-196286 has a problem of requiring a large amount of fuel for the dehydrator and the dryer. In the method of drying by heating as disclosed in Japanese Patent Publication No. 57-3431, troubles such as clogging of the pump are likely to occur when the slurry is concentrated, and when this is dried with a drum type dryer or the like, it is burnt. There was a problem that it was difficult to dry efficiently.

  Further, in the above drying method using the pulse combustion apparatus, the slurry-like material supplied from the supply port to the drying chamber falls as it is and is not sufficiently dispersed in the combustion gas. There was a problem that the state could not be obtained efficiently.

  Therefore, the present invention provides a slurry-like material drying apparatus that does not have various problems as described above, in particular, shochu, and does not require large-scale equipment or a large amount of fuel, and can easily and efficiently dry slurry-like materials. It is an object of the present invention to provide a device that can be used.

The inventor has conducted various studies in view of the above-described problems in the method and apparatus for drying a slurry-like material such as shochu,
(1) In an apparatus for drying the slurry-like material using a pulse combustion device in which a fuel injection nozzle and a slurry-like material injection nozzle are provided in parallel to each other, the fuel injection nozzle is arranged in a plurality of stages in the vertical direction. The slurry-like material injection nozzle is provided in a state where the slurry-like material injection nozzle is sandwiched between an upper stage and a lower stage of the fuel injection nozzles arranged in parallel. And the injection distance of the slurry-like material is increased, whereby the slurry-like material is dispersed in a mist form over a wide range in the combustion gas generated by the combustion of the fuel, so that the slurry-like material is uniformly dried. (2) The above-mentioned pulse combustion device is stored in a container for storing the pulse combustion device, When the outside of the container is surrounded by sand and placed in a housing larger than the container, the slurry-like material is dried more uniformly and sufficiently, and as a result, the drying effect is improved. ,
I found.

The present invention has been invented based on such knowledge, and relates to the following slurry material drying apparatus.
(1) A device for drying a slurry-like material in which a fuel injection nozzle and a slurry-like material injection nozzle attached to a pulse combustion device are provided in parallel to each other, and a plurality of the fuel injection nozzles in the vertical direction The slurry-like material injection nozzles are arranged in parallel with each other, and the slurry-like material injection nozzles are sandwiched between the upper and lower stages of the fuel injection nozzles arranged in the plurality of stages. A drying apparatus for slurry-like material, which is arranged in parallel.
(2) An outer housing, a container containing a pulse combustion device disposed therein, and a sand layer filled between the outer housing and the inner container so as to surround the container. The apparatus for drying a slurry-like material as described in (1) above,
(3) The slurry-like material drying apparatus described in (1) or (2) above, wherein the slurry-like material is shochu.

According to the present invention, there is provided an apparatus for drying a slurry material in which a fuel injection nozzle and a slurry material injection nozzle attached to a pulse combustion apparatus are provided in parallel to each other, wherein the fuel injection nozzle is moved up and down. The slurry-like material is arranged in a plurality of stages parallel to the direction, and the slurry-like material injection nozzle is sandwiched between the upper stage and the lower stage of the fuel injection nozzle arranged in these stages. Since the injection nozzles are arranged in parallel, the injection distance of the slurry-like material is increased, whereby the slurry-like material is dispersed in a mist form over a wide range in the pulse combustion gas generated by the combustion of the fuel, and the slurry-like material The slurry-like material injected from the material injection nozzle is sufficiently dispersed in the pulsed fuel gas without falling from the injection port, so it is dried uniformly. Dry powder state efficiency often give.
The slurry material drying apparatus of the present invention includes an outer housing, a container containing a pulse combustion device disposed therein, and an outer housing and an inner container so as to surround the container. Therefore, it is difficult for the heat generated by the combustion of the pulse combustion device to be dissipated to the outside of the housing and the container, and the high pressure and shock wave generated by this combustion heat is also Since it becomes easy to stay inside, a slurry-like material containing a large amount of moisture can be dried relatively easily and efficiently without requiring large-scale equipment and a large amount of fuel.
In addition, since the outside of the container for accommodating the pulse combustion device is surrounded by sand, the soundproofing / vibrationproofing effect is high, and the occurrence of noise and vibration problems can be prevented.
Furthermore, by drying the shochu slurry with the slurry-like material drying apparatus of the present invention, the shochu can be sufficiently dried without requiring a large amount of fuel, and then the dried shochu is used as feed or the like. Since it can be used, it is not necessary to discard the shochu, and the shochu can be used effectively without enormous costs.

The best mode for carrying out the slurry material drying apparatus of the present invention will be described with reference to the drawings of the embodiments.
FIG. 1 (a) is a side view schematically showing an example of a slurry-like material drying apparatus according to the present invention, FIG. 1 (b) is a schematic perspective view of FIG. 1 (a), and FIG. FIG. 2B is an enlarged perspective view showing an example of an arrangement state of nozzles in the drying apparatus shown in FIG. 1, and FIG. 2C is an enlarged perspective view showing an example of an arrangement state of nozzles in the drying apparatus shown in FIG. FIG. 2D is an enlarged perspective view showing an example of an arrangement state of nozzles in the drying apparatus shown in FIG. 1, and FIG. 3A is an enlarged perspective view showing an example of arrangement state of nozzles in the drying apparatus shown in FIG. Fig. 3 is a longitudinal sectional side view showing the slurry-like material drying apparatus of the present invention, and Fig. 3 (b) is an AA cross-sectional view of Fig. 3 (a).
In the figure, 1 is a drying device, 2 is a pulse combustion device, 3, 3a, 3b are fuel injection nozzles, 4, 4a, 4b are slurry material injection nozzles 4, 5 are fuel tanks, and 6 is a pipe line. 7 is a stirring tank, 8 is a pump, 9 is a conduit, 10 is a drying device, 11 is a pulse combustion device, 12 is a container, 13 is a sand layer, 14 is a housing, and 100 is an induction blower.

  FIG. 1A is a side view schematically showing an example of a drying apparatus according to the present invention. The main part of the drying apparatus 1 shown here is a pulse line from a pulse combustion apparatus 2 and a fuel tank 5 (line). ) The fuel supplied to the pulse combustion device 2 through 6 is combusted with the combustion air supplied from the induction blower 100 simultaneously with the fuel to form a pulse combustion gas, and the pulse fuel gas is pulsed in the pulse combustion device 2 The fuel injection nozzle 3 for injecting into the outside air, and the slurry material injection nozzle 4 for injecting the slurry-like material agitated in the agitation tank 7 to the outside air through the pump 8 and the conduit 9 are configured.

  FIG.1 (b) is a schematic perspective view of the side view which shows generally an example of the drying apparatus by this invention of Fig.1 (a). Two or three fuel injection nozzles 3a, 3a and 3b, 3b, in which the fuel injection nozzle 3 and the slurry-like material injection nozzle 4 shown in FIG. 3b, three slurry-like material injection nozzles 4a, 4a, 4a are arranged in a sandwiched state.

FIG. 2 is an enlarged perspective view showing only the nozzle portion in order to show an example of the arrangement state of the nozzle in the drying apparatus as shown in FIG.
FIG. 2A shows three slurry-like material injection nozzles 4a, 4a, 4a between two fuel injection nozzles 3a, 3a and 3b, 3b arranged in two stages along the vertical direction. The case where these spray nozzles 4a, 4a, 4a are provided in the drying apparatus of the present invention in a sandwiched state is shown.

  The number and arrangement state of these nozzles are not limited to the number and arrangement state of the nozzles shown in FIG. 2A. For example, as shown in FIG. Two slurry-like material injection nozzles 4a, 4a may be provided between the two fuel injection nozzles 3a, 3a arranged in two stages and the three fuel injection nozzles 3b, 3b, 3b. Or, as shown in FIG. 2 (c), between the three fuel injection nozzles 3a, 3a, 3a and 3b, 3b, 3b respectively arranged in two stages along the vertical direction, In the state where the two slurry-like material injection nozzles 4a, 4a and 4b and 4b are stacked in two stages in the vertical direction, these injection nozzles 4a, 4a and 4b and 4b may be provided, or in addition, FIG. As shown in (d), 2 along the vertical direction. Three slurry-like material injection nozzles 4a, 4a, 4a are provided between the two fuel injection nozzles 3a, 3a and 3b, 3b, respectively, and the upper two fuel injection nozzles 3a, 3a Two slurry-like material injection nozzles 4b and 4b may be provided on the top.

  FIG. 3 (a) shows that a pulse combustion apparatus 11 constituting a drying apparatus according to the present invention is housed in a container 12 for housing the pulse combustion apparatus 11, and the outside of the container 12 is a sand layer 13. FIG. 3 is a perspective view showing the drying device 10 housed in a housing 14 larger than the container 12 in a state surrounded by the container 12, and FIG. 3B is a cross-sectional view taken along line AA in FIG. It is.

In such a drying apparatus 10, the heat generated by the combustion of the pulse combustion apparatus 11 is not easily dissipated to the outside of the housing 14, and thus the outside of the container 12, and high pressure and shock waves generated with this combustion heat are also generated. Since it becomes easy to stay inside the container 12, the drying by this drying apparatus 10 can have a sufficient drying effect as compared with the drying apparatus not surrounded by the container 12, the sand layer 13, and the housing 14 as described above.
Further, since the sand is filled so as to surround the container 12, the soundproofing / vibrationproofing effect is high, and it is not necessary to take measures against noise and vibration.

Next, the present invention will be specifically described with reference to an example in which the slurry-like material is cauterized, but the present invention is not limited to this example.
In the perspective view of the drying apparatus according to the present invention shown in FIG. 3 (a), the shochu contained in the shochu tank (not shown) is supplied to the stirring tank 70, where the shochu is fully fluid. Then, the mixture is agitated so as to obtain a homogeneous slurry having the following, and then supplied to the drying apparatus 10 by a pump 80.

Fuel, for example, kerosene, is stored in the fuel tank 50, fuel is supplied from the fuel tank 50, and combustion air is supplied from the induction blower 100 to the pulse combustion device 11 of the drying device 10.
Then, the fuel supplied to the pulse combustion device 11 is burned by the combustion air supplied from the induction blower 100 to generate a pulse combustion gas.

  In front of the drying apparatus 10, slurry-like material injection nozzles 4a, 4a and 4a for injecting shochu slurry and combustion nozzles 3a, 3a and 3b, 3b and 3b for discharging pulse combustion gas from the pulse combustion apparatus 11 are provided. It has been.

And the shochu slurry is injected from the slurry-like material injection nozzles 4a, 4a, 4a by the pump 80, and the fuel injection nozzles 3a, 3a and 3b, 3b, 3b, which release the pulse combustion gas evenly with shock waves. Supplied nearby.
Thus, the shochu slurry is injected from the slurry-like material injection nozzle 4a which is an injection nozzle different from the fuel injection nozzles 3a and 3b for injecting the pulse combustion gas generated when the fuel is combusted by the combustion air. Therefore, this shochu slurry has an increased injection distance, is dispersed in the pulse combustion gas in a wide range of mist, and is uniformly and reliably dried to a desired moisture content.

In this embodiment, the fuel injection nozzles 3a and 3b and the slurry-like material injection nozzle 4a are provided in parallel to each other.
Furthermore, the fuel injection nozzles are arranged in a plurality of stages, and are arranged in a state of sandwiching the slurry material quantity injection nozzle 4a.
In FIG. 3, the fuel injection nozzle has two upper and lower stages (the upper stages are the fuel injection nozzles 3a, 3a, the lower stages are 3b, 3b, 3b), the upper stage is two, and the lower stage is three. A number of nozzles are arranged. And the slurry-like material quantity injection nozzle 4a is arrange | positioned in parallel with the fuel injection nozzles 3a and 3b so that it may be pinched | interposed between the upper stage and lower stage of the fuel injection nozzle.
By disposing each nozzle in this way, the slurry-like material is dispersed in a mist form over a wider range in the pulse combustion gas, and the slurry-like material injected from the slurry-like material injection nozzle falls from the injection port. Therefore, it is possible to efficiently obtain a dry powder that is sufficiently dispersed in the pulse fuel gas and is uniformly dried.
In addition, the arrangement | positioning stage number and number of the said fuel injection nozzle are not limited, Arbitrary numbers can be arrange | positioned.

In addition, the drying apparatus 10 shown in FIG. 3 stores the pulse combustion apparatus 11 in a container 12 for storing the pulse combustion apparatus 11, and surrounds the outside of the container 12 with sand and forms a sand layer 13 on the outer periphery of the container 12. The container 14 is accommodated in a housing 14 larger than the container 12 so as to be formed.
By enclosing the outside of the pulse combustion apparatus 11 with the sand layer 13, the slurry-like material is dried more uniformly and more sufficiently, and the drying effect can be improved.

  The pulse combustion apparatus in the slurry-like material drying apparatus of the present invention is not a special apparatus but may be a commercially available apparatus, and it is only necessary to appropriately change the arrangement and number of fuel injection nozzles.

The side view which shows generally an example of the drying apparatus of the slurry-like material by this invention 1 is a schematic perspective view of FIG. The expanded perspective view which shows an example of the arrangement | positioning state of the nozzle in the drying apparatus shown by FIG. The expanded perspective view which shows an example of the arrangement | positioning state of the nozzle in the drying apparatus shown by FIG. The expanded perspective view which shows an example of the arrangement | positioning state of the nozzle in the drying apparatus shown by FIG. The expanded perspective view which shows an example of the arrangement | positioning state of the nozzle in the drying apparatus shown by FIG. The longitudinal side view which shows the drying apparatus of the slurry-like material of this invention AA cross-sectional view of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Drying apparatus 2 Pulse combustion apparatus 3, 3a, 3b Fuel injection nozzle 4, 4a, 4b Slurry material injection nozzle 5 Fuel tank 6 Pipe line (line)
7 Stirring tank 8 Pump 9 Pipe line 10 Drying device 11 Pulse combustion device 12 Container 13 Sand layer 14 Housing 50 Fuel tank 70 Stirring tank 80 Pump 100 Induction blower

Claims (3)

A device for drying a slurry material in which a fuel injection nozzle and a slurry material injection nozzle attached to a pulse combustion device are provided in parallel to each other,
The fuel injection nozzles are arranged in parallel in a plurality of stages in the vertical direction, and the slurry-like material injection nozzles are sandwiched between the upper stage and the lower stage of the fuel injection nozzles arranged in the plurality of stages. The slurry-like material drying apparatus, wherein the slurry-like material injection nozzles are arranged in parallel.   It comprises an outer housing, a container containing a pulse combustion device disposed therein, and a sand layer filled between the outer housing and the inner container so as to surround the container. The apparatus for drying a slurry-like material according to claim 1. The slurry-like material drying apparatus according to claim 1 or 2, wherein the slurry-like material is shochu.

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