CN212701196U - Polyester resin vacuum tail gas treatment system - Google Patents
Polyester resin vacuum tail gas treatment system Download PDFInfo
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- CN212701196U CN212701196U CN202021305900.4U CN202021305900U CN212701196U CN 212701196 U CN212701196 U CN 212701196U CN 202021305900 U CN202021305900 U CN 202021305900U CN 212701196 U CN212701196 U CN 212701196U
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- 229920001225 polyester resin Polymers 0.000 title claims abstract description 41
- 239000004645 polyester resin Substances 0.000 title claims abstract description 41
- 239000007788 liquid Substances 0.000 claims abstract description 207
- 239000007921 spray Substances 0.000 claims abstract description 112
- 238000005507 spraying Methods 0.000 claims abstract description 22
- 238000009833 condensation Methods 0.000 claims abstract description 20
- 230000005494 condensation Effects 0.000 claims abstract description 20
- 230000000903 blocking effect Effects 0.000 claims abstract description 14
- 238000000926 separation method Methods 0.000 claims abstract description 8
- 238000003786 synthesis reaction Methods 0.000 claims abstract description 6
- 239000000498 cooling water Substances 0.000 claims description 53
- 239000007789 gas Substances 0.000 claims description 46
- 239000002912 waste gas Substances 0.000 claims description 27
- 230000004888 barrier function Effects 0.000 claims description 12
- 238000009423 ventilation Methods 0.000 claims description 9
- 238000009826 distribution Methods 0.000 claims description 6
- 238000005086 pumping Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- 239000003814 drug Substances 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 6
- 239000002351 wastewater Substances 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000006068 polycondensation reaction Methods 0.000 description 3
- 229920005862 polyol Polymers 0.000 description 3
- 150000003077 polyols Chemical class 0.000 description 3
- 230000006837 decompression Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 229920006337 unsaturated polyester resin Polymers 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 1
- -1 alcohol hydrocarbon Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 150000002009 diols Chemical class 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Treating Waste Gases (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
本实用新型公开了一种聚酯树脂真空尾气处理系统，包括真空泵、第一冷凝罐、第二冷凝罐、收集罐和喷淋塔，真空泵用于将尾气从聚酯树脂合成反应釜内抽出，真空泵、第一冷凝罐、第二冷凝罐与喷淋塔依次相连接，第一冷凝罐和第二冷凝罐的内部均设置有冷凝器，冷凝器包括分液腔、集液腔以及与分液器和集液腔均相连通的多个冷凝管，各冷凝管上均设置有多个环形阻挡板，收集罐上与第一冷凝罐和第二冷凝罐均相连通，喷淋塔内从上向下设置有多个喷淋件，喷淋件包括横贯设置在喷淋塔内部的圆形喷淋板，圆形喷淋板上设置有多个喷淋部。本实用新型提供的聚酯树脂真空尾气处理系统，能够对废气进行冷凝和吸收，且通过冷凝器和喷淋件提升对废气的吸收效果。
The utility model discloses a polyester resin vacuum exhaust gas treatment system, which comprises a vacuum pump, a first condensation tank, a second condensation tank, a collection tank and a spray tower. The vacuum pump is used for extracting exhaust gas from a polyester resin synthesis reaction kettle. The vacuum pump, the first condensing tank, the second condensing tank and the spray tower are connected in sequence, and a condenser is arranged inside the first condensing tank and the second condensing tank. The condenser includes a liquid separation chamber, a liquid collection chamber, and a liquid separation chamber. There are multiple condensation pipes connected with the liquid collecting chamber, each condensation pipe is provided with multiple annular blocking plates, the collecting tank is connected with the first condensation tank and the second condensation tank, and the spray tower A plurality of spray pieces are arranged downward, and the spray pieces include a circular spray plate arranged transversely inside the spray tower, and a plurality of spray parts are arranged on the circular spray plate. The polyester resin vacuum exhaust gas treatment system provided by the utility model can condense and absorb the exhaust gas, and improve the absorption effect of the exhaust gas through the condenser and the spraying parts.
Description
Technical Field
The utility model relates to a chemical industry equipment technical field especially relates to a polyester resin vacuum tail gas processing system.
Background
The polyester resin is a general term for a high molecular compound obtained by polycondensation of a diol/polyol and a diacid/polyol. The polyester resin is classified into a saturated polyester resin and an unsaturated polyester resin. Polyester resins can exhibit different excellent properties due to differences in synthetic raw materials, and thus are widely used in manufacturing and living, for example: the resin synthesized by the straight-chain structured polyol and the polyacid has a linear structure and very good flexibility, and is widely applied to the coating industry; the unsaturated polyester resin synthesized by the saturated dibasic acid and the unsaturated dibasic acid has good curing, forming and processing properties, and is suitable for manufacturing glass fiber reinforced plastic products.
The production process of polyester resin generally comprises two steps, namely esterification reaction between alcohol and acid and polycondensation reaction between ester monomers, wherein the polycondensation reaction is completed by vacuum decompression at certain high temperature (about 230-. In the prior art, the vacuum tail gas generated by the reaction kettle is collected in the gas storage tank, then the waste gas liquid condensed by the Roots water circulating pump is pumped into the open type wastewater collecting tank, and finally the waste gas liquid is sent into a sewage treatment plant. The defects of the prior art are as follows: the open wastewater collecting tank only collects the liquid of the wastewater gas and liquid, and the residual tail gas in the wastewater gas and liquid is still directly discharged into the atmosphere, so that a good purification effect cannot be achieved.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a polyester resin vacuum tail gas processing system to solve the above-mentioned weak point among the prior art.
In order to achieve the above object, the present invention provides the following technical solutions:
a polyester resin vacuum exhaust gas treatment system, comprising:
the vacuum pump is used for pumping the tail gas out of the polyester resin synthesis reaction kettle;
the bottom of the first condensing tank is provided with a first cooling water outlet, a first air inlet and a first liquid outlet, the top of the first condensing tank is provided with a first cooling water inlet and a first air outlet, and the first air inlet is connected with the vacuum pump;
the bottom of the second condensing tank is provided with a second cooling water outlet, a second air inlet and a second liquid outlet, the top of the second condensing tank is provided with a second cooling water inlet and a second air outlet, the second air inlet is communicated with the first air outlet, condensers are arranged in the first condensing tank and the second condensing tank respectively, each condenser comprises a liquid distribution cavity, a liquid collection cavity and a plurality of condensing pipes which are communicated with the liquid distribution cavity and the liquid collection cavity, condensing gaps for waste gas to pass are formed among the condensing pipes, a plurality of annular blocking plates are arranged on each condensing pipe, and the radial sizes of the annular blocking plates are gradually increased from the bottom of each condensing pipe to the top;
the collecting tank is provided with two liquid inlets which are respectively communicated with the first liquid outlet and the second liquid outlet;
the spray tower comprises a spray tower body, wherein a third air inlet and a spray liquid outlet are formed in the bottom of the spray tower body, a third air outlet and a spray liquid inlet are formed in the top of the spray tower body, the third air inlet is communicated with the second air outlet, a plurality of spray pieces are arranged in the spray tower body from top to bottom and comprise circular spray plates, the circular spray plates are arranged in the spray tower body in a traversing mode, a plurality of spray portions are arranged on the circular spray plates and are arranged along the circumferential direction of the circular spray plates at intervals, and the spray portions comprise liquid collecting ports, ventilating channels and liquid outlets which are connected.
Foretell polyester resin vacuum tail gas processing system, the top of dividing the sap cavity is provided with inlet channel, the bottom of dividing the sap cavity is provided with a plurality of minutes liquid mouth, and is a plurality of divide the liquid mouth to follow divide sap cavity bottom circumference interval to set up.
In the polyester resin vacuum tail gas treatment system, the liquid outlet channel is arranged at the bottom of the liquid collection cavity, the plurality of liquid collection ports are arranged at the top of the liquid collection cavity and are circumferentially arranged at intervals along the top of the liquid collection cavity, and the upper end and the lower end of the condensation pipe are respectively communicated with the liquid distribution port and the liquid collection port.
In the polyester resin vacuum tail gas treatment system, the annular blocking plate is provided with a plurality of ventilation gaps, and the plurality of ventilation gaps are arranged at intervals along the circumferential direction of the annular blocking plate.
The polyester resin vacuum tail gas treatment system further comprises a pump body, wherein the pump body is arranged between the liquid inlet and the first liquid outlet and between the liquid inlet and the second liquid outlet.
The polyester resin vacuum tail gas treatment system further comprises a liquid collecting tank, wherein a liquid collecting channel and a backflow channel are arranged on the liquid collecting tank, the liquid collecting channel is connected with the spraying liquid outlet, and the backflow channel is communicated with the spraying liquid inlet.
In the polyester resin vacuum tail gas treatment system, the liquid collecting port is located on the upper side face of the circular spraying plate, the liquid outlet is located on the lower side face of the circular spraying plate, and the ventilation channel is communicated with the liquid collecting port and the liquid outlet.
In the technical scheme, the utility model provides a pair of polyester resin vacuum tail gas processing system has following beneficial effect:
the utility model provides a polyester resin vacuum tail gas processing system, including vacuum pump, first condensing tank, second condensing tank, collection tank and spray column, through the two-stage condensation of first condensing tank and second condensing tank, become most tail gas the condensate and deposit in the collection tank, with the partial not fully absorbed tail gas input spray column, realize fully administering to tail gas through the liquid medicine that sprays in the spray column, reduced atmospheric pollution.
The utility model provides a polyester resin vacuum tail gas processing system, the inside of first condensate tank and second condensate tank all is provided with the condenser, all is provided with a plurality of annular barrier plates on the condenser pipe of condenser, from the bottom of condenser pipe to the top direction on, the radial dimension of annular barrier plate crescent, so make the cooling water dispersion through a plurality of condenser pipes, can reduce the transport speed of waste gas through annular barrier plate to promote the condenser to the cooling effect of waste gas.
The utility model provides a polyester resin vacuum tail gas processing system is provided with a plurality of spray from the top down in the spray column, sprays the piece and includes circular spray plate, is provided with a plurality of spray portions on the circular spray plate, can carry out a lot of collection liquid and branch liquid to spraying liquid through spray portion for spraying liquid and disperse the transport in the spray column all the time, thereby realize spraying the abundant contact of liquid and waste gas.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.
Fig. 1 is a schematic structural diagram of a polyester resin vacuum tail gas treatment system provided by an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a first condensation tank according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a spray tower provided in an embodiment of the present invention;
fig. 4 is a schematic structural view of the spraying member provided by the embodiment of the present invention.
Description of reference numerals:
1. a vacuum pump;
2. a first condensing tank;
2.1, a first cooling water outlet; 2.2, a first air inlet; 2.3, a first liquid outlet; 2.4, a first cooling water inlet; 2.5, a first air outlet;
3. a second condensing tank;
3.1, a second cooling water outlet; 3.2, a second cooling water inlet;
4. a condenser;
4.1, a liquid separation cavity; 4.2, a liquid collecting cavity; 4.3, a condenser pipe; 4.4, an annular blocking plate; 4.5, a condensation gap; 4.6, a liquid inlet channel; 4.7, a liquid outlet channel;
5. a collection tank;
6. a spray tower;
6.1, a third air inlet; 6.2, a spray liquid outlet; 6.3, a third air outlet; 6.4, a spraying liquid inlet;
7. a spraying member;
7.1, a circular spray plate; 7.2, a spraying part; 7.3, a liquid collecting port; 7.4, a ventilation channel; 7.5 liquid outlet
8. A pump body;
9. a liquid collecting tank.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.
As shown in fig. 1-4, an embodiment of the present invention provides a polyester resin vacuum tail gas treatment system, which includes a vacuum pump 1, a first condensation tank 2, a second condensation tank 3, a collection tank 5 and a spray tower 6, wherein the vacuum pump 1 is used for pumping out tail gas from a polyester resin synthesis reaction kettle; the bottom of the first condensing tank 2 is provided with a first cooling water outlet 2.1, a first air inlet 2.2 and a first liquid outlet 2.3, the top of the first condensing tank 2 is provided with a first cooling water inlet 2.4 and a first air outlet 2.5, and the first air inlet 2.2 is connected with a vacuum pump 1; a second cooling water outlet 3.1, a second air inlet and a second liquid outlet are arranged at the bottom of the second condensing tank 3, a second cooling water inlet 3.2 and a second air outlet are arranged at the top of the second condensing tank 3, the second air inlet is communicated with a first air outlet 2.5, condensers 4 are arranged in the first condensing tank 2 and the second condensing tank 3, each condenser 4 comprises a liquid distribution cavity 4.1, a liquid collection cavity 4.2 and a plurality of condensing pipes 4.3 communicated with the liquid distribution cavity and the liquid collection cavity 4.2, a condensing gap 4.5 for waste gas to pass is formed between the condensing pipes 4.3, a plurality of annular blocking plates 4.4 are arranged on each condensing pipe 4.3, and the radial sizes of the annular blocking plates 4.4 are gradually increased from the bottom to the top of the condensing pipes 4.3; the collecting tank 5 is provided with two liquid inlets which are respectively communicated with the first liquid outlet 2.3 and the second liquid outlet; the bottom of spray tower 6 is provided with third air inlet 6.1 and sprays liquid export 6.2, the top of spray tower 6 is provided with third gas outlet 6.3 and sprays liquid import 6.4, third air inlet 6.1 is linked together with the second gas outlet, be provided with a plurality of spray 7 from the top down in the spray tower 6, spray 7 includes circular shower plate 7.1, circular shower plate 7.1 traverses the inside that sets up at spray tower 6, be provided with a plurality of spray portions 7.2 on the circular shower plate 7.1, a plurality of spray portions 7.2 set up along circular shower plate 7.1 circumference interval, spray portion 7.2 is including the continuous collection liquid mouth 7.3, airway 7.4 and liquid outlet 7.5.
Specifically, the vacuum pump 1 is connected with a reaction kettle of a polyester resin synthesis reaction, so that tail gas in the reaction kettle is pumped out from the reaction kettle and conveyed to the first condensation tank 2, the bottom of the first condensation tank 2 is provided with a first cooling water outlet 2.1, a first air inlet 2.2 and a first liquid outlet 2.3, the top of the first condensation tank 2 is provided with a first cooling water inlet 2.4 and a first air outlet 2.5, the first cooling water inlet 2.4 and the first cooling water outlet 2.1 are respectively used for inputting and outputting cooling water, the first air inlet 2.2 is connected with the vacuum pump 1 so as to receive waste gas output from the reaction kettle, and the first air outlet 2.5 is used for outputting uncondensed waste gas; a second cooling water outlet 3.1, a second air inlet and a second liquid outlet are arranged at the bottom of the second condensing tank 3, a second cooling water inlet 3.2 and a second air outlet are arranged at the top of the second condensing tank 3, the second cooling water inlet 3.2 and the second cooling water outlet 3.1 are used for inputting and outputting cooling water, the second air inlet is communicated with the first air outlet 2.5 so as to receive waste gas output by the first condensing pipe 4.3, condensers 4 are arranged inside the first condensing tank 2 and the second condensing tank 3, the condensers 4 are used for conveying cooling water and exchanging heat with high-temperature waste gas to condense the waste gas, each condenser 4 comprises a liquid separating cavity 4.1, a liquid collecting cavity 4.2 and a condensing pipe 4.3 which are sequentially connected, the liquid separating cavity 4.1 is positioned at the upper part of the first condensing tank 2 or the second condensing tank 3, the liquid separating cavity 4.1 is communicated with the first cooling water inlet 2.4 or the second cooling water inlet 3.2, so as to receive cooling water conveyed from a first cooling water inlet 2.4 or a second cooling water inlet 3.2, a liquid collecting cavity 4.2 is arranged at the lower part of the first condensing tank 2 or the second condensing tank 3, the liquid collecting cavity 4.2 is communicated with the first cooling water outlet 2.1 or the second cooling water outlet 3.1, so that the cooling water in the liquid collecting cavity 4.2 is output from the first cooling water outlet 2.1 or the second cooling water outlet 3.1, a plurality of condensing pipes 4.3 are arranged between the liquid separating cavity 4.1 and the liquid collecting cavity 4.2, the upper ends of the plurality of condensing pipes 4.3 are communicated with the liquid separating cavity 4.1, the lower ends of the condensing pipes 4.3 are communicated with the liquid collecting cavity 4.2, condensing gaps 4.5 for waste gas to pass are formed between the condensing pipes 4.3, so that the cooling water is conveyed to the interior of the liquid separating cavity 4.1 and then is divided to the interior of each condensing pipe 4.3, the condensing pipes 4.3 can realize the condensation of high-temperature waste gas through the plurality of condensing pipes, the cooling water is conveyed to the second cooling water outlet 1.2 or the second cooling water outlet 1, all be provided with a plurality of annular barrier plates 4.4 on each condenser pipe 4.3, annular barrier plate 4.4 is fixed on condenser pipe 4.3, from condenser pipe 4.3's bottom to the top direction on, annular barrier plate 4.4's radial dimension crescent, can reduce the conveying speed of high temperature waste gas through cyclic annular barrier plate, increase high temperature waste gas and condenser pipe 4.3's contact time, promote the condensation effect.
In this embodiment, the collecting tank 5 is provided with two liquid inlets, the two liquid inlets are respectively communicated with the first liquid outlet 2.3 and the second liquid outlet, and the liquid inlets are communicated with the first liquid outlet 2.3 and the second liquid outlet through a water pump, so that waste liquid condensed in the first condensing tank 2 and the second condensing tank 3 is stored; the bottom of the spray tower 6 is provided with a third air inlet 6.1 and a spray liquid outlet 6.2, the top of the spray tower 6 is provided with a third air outlet 6.3 and a spray liquid inlet 6.4, the spray liquid inlet 6.4 and the spray liquid outlet 6.2 are respectively used for conveying or outputting liquid medicine into the spray tower 6, the sprayed liquid medicine can be hydrogen peroxide solution, or corresponding liquid medicine can be sprayed according to different waste gases generated by polyester resin synthesis reaction, the third air inlet 6.1 is communicated with the second air outlet so as to receive the waste gas conveyed from the second condensation tank 3, so that the waste gas moves upwards from the bottom of the spray tower 6, the spray liquid moves downwards from the top of the spray tower 6, the moving directions of the waste gas and the spray liquid are opposite, so that the spray liquid and the waste gas are fully contacted, the spray liquid can purify the waste gas, a plurality of spray pieces 7 are arranged in the spray tower 6 from top to bottom, the spray pieces 7 comprise circular spray plates 7.1, circular spray plate 7.1 traverses the inside that sets up at spray column 6, a plurality of circular spray plate 7.1 set up along spray column 6's axis direction interval, be provided with a plurality of spray portions 7.2 on the circular spray plate 7.1, a plurality of spray portions 7.2 set up along circular spray plate 7.1 circumference interval, spray portion 7.2 is including the continuous collection liquid mouth 7.3, passageway 7.4 and the liquid outlet 7.5 of ventilating, can carry out a lot of collection liquid to spray liquid through spray portion 7.2, divide liquid, make spray liquid disperse the transport all the time, realize spraying the abundant contact of liquid and waste gas.
The embodiment of the utility model provides a polyester resin vacuum tail gas processing system, including vacuum pump 1, first condensing tank 2, second condensing tank 3, holding vessel 5 and spray column 6, through the two-stage condensation of first condensing tank 2 and second condensing tank 3, become most tail gas condensate and deposit in holding vessel 5, get into partial insufficient absorption's tail gas spray column 6, realize the abundant improvement to tail gas through the liquid medicine that sprays in the spray column 6, reduced the pollution to atmosphere.
The embodiment of the utility model provides a polyester resin vacuum tail gas processing system, the inside of first condensate tank 2 and second condensate tank 3 all is provided with condenser 4, all be provided with a plurality of annular barrier plates 4.4 on condenser 4's the condenser pipe 4.3, from condenser pipe 4.3's bottom to the top direction on, annular barrier plate 4.4's radial dimension crescent, so make the cooling water dispersion through a plurality of condenser pipes 4.3, can reduce the conveying speed of waste gas through annular barrier plate 4.4, thereby promote the cooling effect of condenser 4 to waste gas.
The embodiment of the utility model provides a polyester resin vacuum tail gas processing system is provided with a plurality of spray 7 from the top down in the spray column 6, sprays 7 including circular spray plate 7.1, is provided with a plurality of spray portions 7.2 on the circular spray plate 7.1, can carry out a lot of album liquid, branch liquid to spraying liquid through spray portion 7.2 for spraying liquid disperses the transport in spray column 6 all the time, thereby realizes spraying the abundant contact of liquid and waste gas.
In this embodiment, preferably, a liquid inlet channel 4.6 is arranged at the top of the liquid separating cavity 4.1, the liquid inlet channel 4.6 is communicated with the first cooling water inlet 2.4 or the second cooling water inlet 3.2, so as to convey cooling water to the inside of the liquid separating cavity 4.1, a plurality of liquid separating ports are arranged at the bottom of the liquid separating cavity 4.1, and are circumferentially arranged at intervals along the bottom of the liquid separating cavity 4.1, and cooling water can be dispersed and output through the liquid separating ports.
In this embodiment, preferably, the bottom of the liquid collecting cavity 4.2 is provided with a liquid outlet channel 4.7, the liquid outlet channel 4.7 is communicated with the first cooling water outlet 2.1 or the second cooling water outlet 3.1, the top of the liquid collecting cavity 4.2 is provided with a plurality of liquid collecting ports 7.3, the plurality of liquid collecting ports 7.3 are circumferentially arranged along the top of the liquid collecting cavity 4.2 at intervals, the cooling water can be collected into the liquid collecting cavity 4.2 through the plurality of liquid collecting ports 7.3, the upper end and the lower end of the condensing tube 4.3 are respectively communicated with the liquid distributing ports and the liquid collecting ports 7.3, so that the cooling water is dispersedly output from the liquid distributing ports of the liquid distributing cavity 4.1, the cooling water is conveyed into the liquid collecting cavity 4.2 along the condensing tube 4.3, and then the cooling water is output from the liquid outlet channel 4.7.
In this embodiment, preferably, a plurality of ventilation gaps are provided on the annular blocking plate 4.4, the ventilation gaps are arranged at intervals along the circumferential direction of the annular blocking plate 4.4, the annular blocking plate 4.4 is arranged around the outside of the cooling pipe, the ventilation gaps are through holes, through holes or openings arranged on the annular blocking plate 4.4, and exhaust gas can be conveyed through the ventilation gaps.
In this embodiment, it is preferred, still include the pump body 8, all be provided with the pump body 8 between liquid inlet and the first liquid export 2.3, between liquid inlet and the second liquid export, the pump body 8 can be taken out the condensate in first condensate tank 2 and the second condensate tank 3 and is carried to in the holding vessel 5.
In this embodiment, preferred, still include album of liquid jar 9, collection is provided with collection liquid channel and return channel on the jar 9 of collection, and collection liquid channel is connected with spraying liquid export 6.2, can retrieve the liquid medicine to the inside of collection liquid jar 9 like this, and return channel is linked together with spraying liquid import 6.4, so realizes liquid medicine reuse.
In this embodiment, preferably, the liquid collecting port 7.3 is located on the upper side surface of the circular spraying plate 7.1, the liquid outlet 7.5 is located on the lower side surface of the circular spraying plate 7.1, the liquid collecting port 7.3 and the liquid outlet 7.5 are both horn-shaped, the vent channel 7.4 is communicated with the liquid collecting port 7.3 and the liquid outlet 7.5, and the liquid medicine can be collected into the vent channel 7.4 through the horn-shaped liquid collecting port 7.3 and then dispersedly output from the liquid outlet 7.5.
In this embodiment, the first and second condensing tanks 2 and 3 are used to condense high temperature exhaust gas, the exhaust gas that is not condensed in time is purified and absorbed by the liquid medicine while passing through the spray tower 6, and vacuum decompression of the polyester resin is basically performed at a high temperature of about 240 ℃. The boiling point of the organic alcohol hydrocarbon which participates in the reaction is 210 ℃ and above except for 197 ℃ of ethylene glycol, so most of the generated high-temperature tail gas becomes condensate when passing through the first condensing tank 2 and the second condensing tank 3 and is stored in the collecting tank 5, and the tail gas which is not condensed in time is fully contacted with the sprayed liquid medicine when passing through the spray tower 6, thereby achieving the purpose of purification.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (7)
1. A polyester resin vacuum tail gas treatment system is characterized by comprising:
the vacuum pump is used for pumping the tail gas out of the polyester resin synthesis reaction kettle;
the bottom of the first condensing tank is provided with a first cooling water outlet, a first air inlet and a first liquid outlet, the top of the first condensing tank is provided with a first cooling water inlet and a first air outlet, and the first air inlet is connected with the vacuum pump;
the bottom of the second condensing tank is provided with a second cooling water outlet, a second air inlet and a second liquid outlet, the top of the second condensing tank is provided with a second cooling water inlet and a second air outlet, the second air inlet is communicated with the first air outlet, condensers are arranged in the first condensing tank and the second condensing tank respectively, each condenser comprises a liquid separating cavity, a liquid collecting cavity and a plurality of condensing pipes which are communicated with the liquid separating cavity and the liquid collecting cavity, condensing gaps for waste gas to pass are formed among the condensing pipes, a plurality of annular blocking plates are arranged on each condensing pipe, and the radial sizes of the annular blocking plates are gradually increased from the bottom of each condensing pipe to the top;
the collecting tank is provided with two liquid inlets which are respectively communicated with the first liquid outlet and the second liquid outlet;
the spray tower comprises a spray tower body, wherein a third air inlet and a spray liquid outlet are formed in the bottom of the spray tower body, a third air outlet and a spray liquid inlet are formed in the top of the spray tower body, the third air inlet is communicated with the second air outlet, a plurality of spray pieces are arranged in the spray tower body from top to bottom and comprise circular spray plates, the circular spray plates are arranged in the spray tower body in a traversing mode, a plurality of spray portions are arranged on the circular spray plates and are arranged along the circumferential direction of the circular spray plates at intervals, and the spray portions comprise liquid collecting ports, ventilating channels and liquid outlets which are connected.
2. The polyester resin vacuum tail gas treatment system according to claim 1, wherein a liquid inlet channel is arranged at the top of the liquid separation cavity, a plurality of liquid separation ports are arranged at the bottom of the liquid separation cavity, and the plurality of liquid separation ports are circumferentially arranged along the bottom of the liquid separation cavity at intervals.
3. The polyester resin vacuum tail gas treatment system according to claim 2, wherein a liquid outlet channel is arranged at the bottom of the liquid collection cavity, a plurality of liquid collection ports are arranged at the top of the liquid collection cavity, the liquid collection ports are circumferentially arranged along the top of the liquid collection cavity at intervals, and the upper end and the lower end of the condensation pipe are respectively communicated with the liquid distribution port and the liquid collection port.
4. The polyester resin vacuum exhaust treatment system according to claim 1, wherein a plurality of vent gaps are provided on the annular barrier plate, and the plurality of vent gaps are spaced along a circumferential direction of the annular barrier plate.
5. The polyester resin vacuum exhaust treatment system according to claim 1, further comprising a pump body, wherein the pump body is disposed between the liquid inlet and the first liquid outlet and between the liquid inlet and the second liquid outlet.
6. The polyester resin vacuum tail gas treatment system according to claim 1, further comprising a liquid collection tank, wherein a liquid collection channel and a return channel are arranged on the liquid collection tank, the liquid collection channel is connected with the spray liquid outlet, and the return channel is communicated with the spray liquid inlet.
7. The polyester resin vacuum tail gas treatment system according to claim 1, wherein the liquid collecting port is located on an upper side surface of the circular spraying plate, the liquid outlet is located on a lower side surface of the circular spraying plate, and the ventilation channel is communicated with the liquid collecting port and the liquid outlet.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021305900.4U CN212701196U (en) | 2020-07-07 | 2020-07-07 | Polyester resin vacuum tail gas treatment system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021305900.4U CN212701196U (en) | 2020-07-07 | 2020-07-07 | Polyester resin vacuum tail gas treatment system |
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| CN212701196U true CN212701196U (en) | 2021-03-16 |
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| CN202021305900.4U Active CN212701196U (en) | 2020-07-07 | 2020-07-07 | Polyester resin vacuum tail gas treatment system |
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| CN (1) | CN212701196U (en) |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Polyester resin vacuum exhaust gas treatment system Granted publication date: 20210316 Pledgee: Agricultural Bank of China Limited Mount Huangshan Huizhou Sub branch Pledgor: ANHUI YONGLI NEW MATERIAL SCIENCE & TECHNOLOGY Co.,Ltd. Registration number: Y2025980010070 |
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