CN214426022U - Waste gas recovery device of polyurethane resin production equipment - Google Patents
Waste gas recovery device of polyurethane resin production equipment Download PDFInfo
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- CN214426022U CN214426022U CN202120472095.2U CN202120472095U CN214426022U CN 214426022 U CN214426022 U CN 214426022U CN 202120472095 U CN202120472095 U CN 202120472095U CN 214426022 U CN214426022 U CN 214426022U
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Abstract
The utility model relates to a waste gas recovery device of polyurethane resin production equipment, which comprises a pretreatment system, a catalytic oxidation system, a post-treatment system and a discharge system which are arranged in sequence, wherein waste gas is introduced into the pretreatment system through a first air inlet fan; the pretreatment system comprises a plurality of adsorption tower devices which are connected in parallel or in series, the catalytic oxidation system comprises an RTO incinerator, the post-treatment system comprises an alkali liquor absorption tower, and the discharge system comprises a chimney; the adsorption tower device and the RTO incinerator are sequentially provided with a demisting tower, a first draught fan and an air filter, an air outlet fan is arranged between the alkali liquor absorption tower and the chimney, and the first air inlet fan, the adsorption tower device, the demisting tower, the first draught fan, the air filter, the RTO incinerator, the alkali liquor absorption tower, the air outlet fan and the chimney are sequentially connected through a pipeline. The utility model discloses beneficial effect such as waste gas treatment is effectual, efficient has.
Description
Technical Field
The utility model relates to a waste gas recovery device especially relates to a waste gas recovery device of polyurethane resin production facility, belongs to exhaust-gas treatment device technical field.
Background
The polyurethane resin is a novel high polymer with unique performance and multiple purposes, and is widely applied to the departments of electromechanics, ships, aviation, vehicles, civil construction, light industry and textile and the like. The products made of polyurethane resin include foamed plastics, rubber, paint, adhesive, fibre and synthetic leather, and the polyurethane has foaming property, elasticity, wear resistance, adhesion, low-temp. resistance, solvent resistance and biological ageing resistance, so that it is a high-molecular synthetic material with quick development.
A large amount of small-molecule organic waste gas generated in the production process of polyurethane resin is volatilized into the atmosphere, so that atmospheric pollution is caused, the waste gas is directly discharged into the production environment in the past production, the environmental pollution is caused, and the health of production personnel is also harmed.
SUMMERY OF THE UTILITY MODEL
The utility model discloses mainly be to the organic waste gas that produces in the polyurethane resin production process among the prior art not effectively solved the problem, provide a polyurethane resin production facility's waste gas recovery device.
The purpose of the utility model is mainly realized by the following scheme:
a waste gas recovery device of polyurethane resin production equipment comprises a pretreatment system, a catalytic oxidation system, a post-treatment system and a discharge system which are sequentially arranged, wherein waste gas is introduced into the pretreatment system through a first air inlet fan; the pretreatment system comprises a plurality of adsorption tower devices which are connected in parallel or in series, the catalytic oxidation system comprises an RTO incinerator, the post-treatment system comprises an alkali liquor absorption tower, and the discharge system comprises a chimney; the adsorption tower device and the RTO incinerator are sequentially provided with a demisting tower, a first draught fan and an air filter, an air outlet fan is arranged between the alkali liquor absorption tower and the chimney, and the first air inlet fan, the adsorption tower device, the demisting tower, the first draught fan, the air filter, the RTO incinerator, the alkali liquor absorption tower, the air outlet fan and the chimney are sequentially connected through a pipeline.
Preferably, the adsorption tower device comprises a first-stage adsorption tower, a second-stage adsorption tower and a third-stage adsorption tower which are arranged in series or in parallel.
Preferably, the RTO incinerator is internally provided with a combustion chamber and at least one heat storage chamber communicated with the combustion chamber, the combustion chamber is internally provided with an igniter and a temperature sensor, and the heat storage body is respectively arranged in each heat storage chamber.
Preferably, the igniter is connected with a fuel and a combustion fan through pipelines respectively.
Preferably, an inlet manifold is connected to an outlet of the air filter, and the inlet manifold is communicated with each regenerative chamber through an inlet branch pipe; an air outlet main pipe is connected between the alkali liquor absorption tower and the RTO incinerator and is communicated with each regenerative chamber through an air outlet branch pipe; the inlet of the air filter is also connected with a purging main pipe, the purging main pipe is communicated with each heat storage chamber through purging branch pipes, and a second induced draft fan is arranged on the purging main pipe; and control valves are arranged on each of the gas inlet branch pipe, the gas outlet branch pipe and the purging branch pipe.
Preferably, the gas outlet main pipe is provided with a first waste heat recovery tank, a second waste heat recovery tank is arranged below the first waste heat recovery tank, a heat conduction pipe is arranged between the first waste heat recovery tank and the second waste heat recovery tank, an inlet of the second waste heat recovery tank is connected with an air induced draft fan through a pipeline, and an outlet of the second waste heat recovery tank is connected with the purging main pipe through a pipeline.
Preferably, the air filter is internally provided with a first filter screen, a second filter screen and an activated carbon adsorption layer in sequence along the air flowing direction.
Preferably, the alkali liquor absorption tower comprises a tower body, an air inlet is formed in the bottom of the tower body, an air outlet is formed in the top of the tower body, at least two layers of tower plates are arranged in the tower body, runners which penetrate through the tower plates from top to bottom and incline to one side are arranged on the tower plates, the inclination directions of the runners of the two adjacent layers of tower plates are opposite, a spray pipe is arranged above each layer of tower plate, one end of each spray pipe, which is located in the tower body, is provided with a plurality of nozzles, and the other end of each spray pipe is communicated with the bottom of the tower body through a circulating pump.
Preferably, a pH detector is arranged at the bottom in the tower body, an alkali liquor supplementing pipeline is further connected to the lower portion of the tower body, an electromagnetic valve is installed on the alkali liquor supplementing pipeline, and the electromagnetic valve is controlled to be opened and closed through detection of the pH detector.
Preferably, the height of the chimney is not less than 15 m.
Therefore, the utility model discloses possess following advantage:
(1) the utility model is provided with a pretreatment system, the adsorption tower device of the pretreatment system comprises a plurality of adsorption towers which are arranged in series or in parallel, the adsorption towers select an activated carbon adsorption method or a water absorption method according to actual conditions, can remove toluene, butanone, DMF and the like in the waste gas, and eliminate the pollution of the waste gas to the environment to the maximum extent;
(2) the utility model is provided with a catalytic oxidation system, the catalytic oxidation system adopts an RTO incinerator, the pretreated waste gas enters a regenerator through a first draught fan, the waste gas is preheated to store and exchange heat, partial pollutants are oxidized and decomposed, the waste gas continues to complete catalytic oxidation reaction through the combustor, water and carbon dioxide are generated by reaction, and the removal rate of organic matters in the waste gas can reach more than 98%;
(3) the utility model discloses be provided with post processing system, adopt alkali lye absorption tower to burn the waste gas after burning furnace processing to RTO and absorb, further reduce non-methane total hydrocarbon content, prevent that the environment from being polluted.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the air filter of the present invention;
FIG. 3 is a schematic structural diagram of the lye absorption tower of the present invention.
Illustration of the drawings: 1-a first air inlet fan, 2-a first-stage adsorption tower, 3-a second-stage adsorption tower, 4-a third-stage adsorption tower, 5-a demisting tower, 6-a first induced draft fan, 7-an air filter, 71-a first filter screen, 72-a second filter screen, 73-an activated carbon adsorption layer, 8-an RTO incinerator, 81-a combustion chamber, 82-a heat storage chamber, 83-an igniter, 84-a temperature sensor, 85-a heat storage body, 86-fuel, 87-a combustion-supporting fan, 9-an alkali liquor absorption tower, 90-a tower body, 91-an air inlet, 92-an air outlet, 93-a tower plate, 94-a spray pipe, 95-a spray nozzle, 96-a circulating pump, 97-a pH detector, 98-an alkali liquor replenishing pipeline and 99-an electromagnetic valve, 10-an air outlet fan, 11-a chimney, 12-an air inlet header pipe, 13-an air inlet branch pipe, 14-an air outlet header pipe, 15-an air outlet branch pipe, 16-a purging header pipe, 17-a purging branch pipe, 18-a second induced draft fan, 19-a control valve, 20-a first waste heat recovery box, 21-a second waste heat recovery box, 22-a heat conduction pipe and 23-an air induced draft fan.
Detailed Description
The technical solution of the present invention is further specifically described below by way of specific embodiments and with reference to the accompanying drawings. It is to be understood that the practice of the present invention is not limited to the following examples, and that any modifications and/or changes in form made to the present invention are intended to fall within the scope of the present invention.
In the utility model, all parts and percentages are weight units, and the adopted equipment, raw materials and the like can be purchased from the market or commonly used in the field if not specified. The methods in the following examples are conventional in the art unless otherwise specified. The components or devices in the following examples are, unless otherwise specified, standard parts or parts known to those skilled in the art, the structure and principle of which are known to those skilled in the art through technical manuals or through routine experimentation.
Example (b):
as shown in fig. 1, the utility model provides a technical scheme, a waste gas recovery device of polyurethane resin production facility, including pretreatment systems, catalytic oxidation system, aftertreatment system and the discharge system that sets gradually, waste gas introduces pretreatment systems through first air inlet fan 1.
The pretreatment system is composed of a plurality of adsorption tower devices which are connected in parallel or in series, a parallel mode is adopted when the waste gas treatment capacity is large according to actual conditions, the adsorption tower devices in the embodiment are composed of a first-stage adsorption tower 2, a second-stage adsorption tower 3 and a third-stage adsorption tower 4 which are sequentially connected in series, and pollution factors such as toluene, butanone and DMF in waste gas are effectively removed by adopting a combined process of an activated carbon adsorption method and a water absorption method, so that the pollution of the waste gas to the environment is eliminated to the maximum extent.
The catalytic oxidation system comprises an RTO incinerator 8, wherein a combustion chamber 81 and at least one heat storage chamber 82 communicated with the combustion chamber 81 are arranged inside the RTO incinerator 8, three heat storage chambers 82 are arranged in the embodiment, an igniter 83 and a temperature sensor 84 are arranged inside the combustion chamber 81, and a heat storage body 85 is arranged inside each heat storage chamber 82; the igniter 83 is connected to a fuel 86 and a combustion fan 87 through pipes, respectively.
Pretreated waste gas enters the heat storage chamber 82 through the first induced draft fan 6, a cordierite honeycomb ceramic heat storage body can be adopted as a heat storage body 85 in the heat storage chamber 82, the heat storage body 85 can preheat organic waste gas entering the heat storage chamber 82, thereby saving fuel consumption of waste gas heating, heat storage and heat exchange are carried out after waste gas preheating, partial pollutants are oxidized and decomposed, the waste gas continues to enter the combustion chamber 81, an igniter 83 is arranged in the combustion chamber 81, the igniter 83 can generate high temperature of 760-1000 ℃ after ignition, the waste gas is subjected to high temperature combustion, carbon dioxide and water are produced after combustion, and the removal rate of organic matters in the waste gas can reach more than 98%.
It has set gradually defogging tower 5 to burn between 8 to have set gradually between adsorption tower device and the RTO burning furnace, first draught fan 6 and air cleaner 7, air cleaner 7's inside has set gradually first filter screen 71 along the air flow direction, second filter screen 72 and active carbon adsorption layer 73, air cleaner 7 makes waste gas filtered before getting into RTO burning furnace 8, avoid blocking up equipment, reduce equipment's life, air cleaner 7 is inside through first filter screen 71, the impurity granule of the thorough filtered air of second filter screen 72 and active carbon adsorption layer 73 three-layer filtration structure.
An inlet manifold 12 is connected to the outlet of the air filter 7, and the inlet manifold 12 is communicated with each regenerative chamber 82 through an inlet branch pipe 13; an air outlet header pipe 14 is connected between the alkali liquor absorption tower 9 and the RTO incinerator 8, and the air outlet header pipe 14 is communicated with each regenerative chamber 82 through an air outlet branch pipe 15; the inlet of the air filter 7 is also connected with a purging header pipe 16, the purging header pipe 16 is communicated with each heat storage chamber 82 through a purging branch pipe 17, and a second induced draft fan 18 is arranged on the purging header pipe 16; each of the inlet branch pipe 13, the outlet branch pipe 15 and the purging branch pipe 17 is provided with a control valve 19; be provided with first waste heat recovery case 20 on the main 14 of giving vent to anger, the below of first waste heat recovery case 20 is provided with second waste heat recovery case 21, and is provided with heat pipe 22 between first waste heat recovery case 20 and the second waste heat recovery case 21, and there is air draught fan 23 in the import of second waste heat recovery case 21 through the pipe connection, and the export of second waste heat recovery case 21 is passed through the pipeline and is connected with the house steward 16 that sweeps.
Waste gas enters an RTO incinerator 8 through an air filter 7, an air inlet main pipe 12 and an air inlet branch pipe 13 under the action of a first draught fan 6, after the waste gas is subjected to heat storage and oxidation treatment in the RTO incinerator 8, purified air enters a first waste heat recovery tank 20 through an air outlet main pipe 14 and an air outlet branch pipe 15 for waste heat recovery, high-temperature air enters from the left end of the first waste heat recovery tank 20 to wash a heat conduction pipe 22, the heat conduction pipe 22 is activated to automatically conduct heat to the lower end, then the upper end of the heat conduction pipe 22 absorbs heat, the temperature of the high-temperature air is reduced after the high-temperature air flows through the heat conduction pipe 22, the heat is absorbed by the heat conduction pipe 22 and conducted to the lower end, at the moment, under the action of an air draught fan 23, external fresh air flows into a second waste heat recovery tank 21 to wash the lower end of the heat conduction pipe 22, the temperature of the air rises after the air flows through the heat conduction pipe 22, the heated air enters a sweeping main pipe 17 and joins with high-temperature sweeping waste gas which flows out from a heat storage chamber 82 through the sweeping branch pipe 17 and the sweeping main pipe 16, thereby achieving the purposes of reducing the exhaust temperature of the waste gas and saving the energy of the combustion chamber 81, and discharging the waste gas after waste heat recovery to a post-treatment system.
The post-treatment system comprises an alkali liquor absorption tower 9, the alkali liquor absorption tower 9 comprises a tower body 90, the bottom of the tower body 90 is provided with an air inlet 91, the top of the tower body 90 is provided with an air outlet 92, at least two layers of tower plates 93 are arranged in the tower body 90, the tower plates 93 are provided with flow channels which penetrate through the tower plates up and down and incline to one side, the inclination directions of the flow channels of the two adjacent layers of tower plates 93 are opposite, a spray pipe 94 is arranged above each layer of tower plate 93, one end, positioned in the tower body 90, of each spray pipe 94 is provided with a plurality of nozzles 95, the other end of each spray pipe 94 is communicated with the bottom of the tower body 90 through a circulating pump 96, the bottom in the tower body 90 is provided with a pH detector 97, the lower part of the tower body 90 is also connected with an alkali liquor supplementing pipeline 98, an electromagnetic valve 99 is arranged on the alkali liquor supplementing pipeline 98, and the opening and closing of the electromagnetic valve 99 are controlled through the operation of the pH detector 97; in the embodiment, 3 layers of tower plates 93 are arranged, waste gas enters the tower body 90 from the gas inlet 91, the direction of the waste gas is changed for many times through a flow channel on the tower plates 93, the waste gas is fully contacted with liquid sprayed out by the spray pipes 94 in the flow channel to generate chemical reaction, and harmful components in the waste gas are removed; the pH detector 97 and the electromagnetic valve 99 are connected with the same controller to realize the automatic adjustment of the pH value, and the waste gas treated by the alkali liquor absorption tower 9 enters the discharge system.
The discharge system comprises a chimney 11, the height of the chimney 11 is not less than 15 m, and an air outlet fan 10 is arranged between the alkali liquor absorption tower 9 and the chimney 11.
The utility model provides a waste gas recovery device of polyurethane resin production facility, wherein first air intake fan 1, adsorption tower device, defogging tower 5, first draught fan 6, air cleaner 7, RTO burns burning furnace 8, alkali lye absorption tower 9, air outlet fan 10 and chimney 11 and connects gradually through the pipeline, and the efficiency of getting rid of pollution factor is higher than 98% in the waste gas, can eliminate the pollution of waste gas to the environment to the furthest, and the treatment effect is good, efficient, and the practicality is strong.
It should be understood that this example is for illustrative purposes only and is not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope of the appended claims.
Claims (10)
1. The utility model provides a waste gas recovery device of polyurethane resin production facility which characterized in that: the waste gas recovery device comprises a pretreatment system, a catalytic oxidation system, a post-treatment system and a discharge system which are sequentially arranged, and waste gas is introduced into the pretreatment system through a first air inlet fan (1); the pretreatment system comprises a plurality of adsorption tower devices which are connected in parallel or in series, the catalytic oxidation system comprises an RTO incinerator (8), the post-treatment system comprises an alkali liquor absorption tower (9), and the discharge system comprises a chimney (11); incinerator (8) are burnt to adsorption tower device and RTO between having set gradually defogging tower (5), first draught fan (6) and air cleaner (7), be provided with between alkali lye absorption tower (9) and chimney (11) and give vent to anger fan (10), above-mentioned first air intake fan (1), adsorption tower device, defogging tower (5), first draught fan (6), air cleaner (7), RTO burn incinerator (8), alkali lye absorption tower (9), give vent to anger fan (10) and chimney (11) and connect gradually through the pipeline.
2. The exhaust gas recovery device of a polyurethane resin production facility according to claim 1, characterized in that: the adsorption tower device comprises a first-stage adsorption tower (2), a second-stage adsorption tower (3) and a third-stage adsorption tower (4) which are connected in series or in parallel.
3. The exhaust gas recovery device of a polyurethane resin production facility according to claim 1, characterized in that: the RTO incinerator (8) is internally provided with a combustion chamber (81) and at least one heat storage chamber (82) communicated with the combustion chamber (81), an igniter (83) and a temperature sensor (84) are arranged inside the combustion chamber (81), and a heat storage body (85) is respectively arranged inside each heat storage chamber (82).
4. The exhaust gas recovery device of a polyurethane resin production facility according to claim 3, characterized in that: the igniter (83) is respectively connected with a fuel (86) and a combustion fan (87) through pipelines.
5. The exhaust gas recovery device of a polyurethane resin production facility according to claim 4, characterized in that: an inlet manifold (12) is connected to an outlet of the air filter (7), and the inlet manifold (12) is communicated with each regenerative chamber (82) through an inlet branch pipe (13); an air outlet header pipe (14) is connected between the alkali liquor absorption tower (9) and the RTO incinerator (8), and the air outlet header pipe (14) is communicated with each regenerative chamber (82) through an air outlet branch pipe (15); the inlet of the air filter (7) is also connected with a purging main pipe (16), the purging main pipe (16) is communicated with each heat storage chamber (82) through a purging branch pipe (17), and a second induced draft fan (18) is arranged on the purging main pipe (16); and each of the air inlet branch pipe (13), the air outlet branch pipe (15) and the purging branch pipe (17) is provided with a control valve (19).
6. The exhaust gas recovery device of a polyurethane resin production facility according to claim 5, characterized in that: be provided with first waste heat recovery case (20) on giving vent to anger house steward (14), the below of first waste heat recovery case (20) is provided with second waste heat recovery case (21), and is provided with heat pipe (22) between first waste heat recovery case (20) and second waste heat recovery case (21), there is air draught fan (23) in the import of second waste heat recovery case (21) through the pipe connection, and the export of second waste heat recovery case (21) is passed through the pipeline and is connected with main (16) that sweeps.
7. The exhaust gas recovery device of a polyurethane resin production facility according to claim 1, characterized in that: the air filter (7) is internally provided with a first filter screen (71), a second filter screen (72) and an activated carbon adsorption layer (73) in sequence along the air flowing direction.
8. The exhaust gas recovery device of a polyurethane resin production facility according to claim 1, characterized in that: the alkali liquor absorption tower (9) comprises a tower body (90), an air inlet (91) is formed in the bottom of the tower body (90), an air outlet (92) is formed in the top of the tower body, at least two layers of tower plates (93) are arranged in the tower body (90), a flow channel which runs through the tower plates (93) from top to bottom and inclines to one side is formed in each tower plate (93), the inclination directions of the flow channels of the two adjacent layers of tower plates (93) are opposite, a spray pipe (94) is arranged above each layer of tower plate (93), a plurality of nozzles (95) are arranged at one end, located in the tower body (90), of each spray pipe (94), and the other end of each spray pipe (94) is communicated with the bottom of the tower body (90) through a circulating pump (96).
9. The exhaust gas recovery device of a polyurethane resin production facility according to claim 8, characterized in that: the tower body (90) is provided with a pH detector (97) at the bottom, the lower part of the tower body (90) is also connected with an alkali liquor supplementing pipeline (98), an electromagnetic valve (99) is installed on the alkali liquor supplementing pipeline (98), and the opening and closing of the electromagnetic valve (99) are controlled through the operation of the pH detector (97).
10. The exhaust gas recovery device of a polyurethane resin production facility according to claim 1, characterized in that: the height of the chimney (11) is not less than 15 m.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120472095.2U CN214426022U (en) | 2021-03-04 | 2021-03-04 | Waste gas recovery device of polyurethane resin production equipment |
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| CN202120472095.2U CN214426022U (en) | 2021-03-04 | 2021-03-04 | Waste gas recovery device of polyurethane resin production equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116726682A (en) * | 2023-08-14 | 2023-09-12 | 北京中航泰达环保科技股份有限公司 | Dry desulfurization, denitrification and dust removal device and modular dry desulfurization, denitrification and dust removal system |
| CN117823927A (en) * | 2024-03-01 | 2024-04-05 | 江苏优尚环境工程有限公司 | RCO combustion heat accumulation gas collection chamber |
-
2021
- 2021-03-04 CN CN202120472095.2U patent/CN214426022U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116726682A (en) * | 2023-08-14 | 2023-09-12 | 北京中航泰达环保科技股份有限公司 | Dry desulfurization, denitrification and dust removal device and modular dry desulfurization, denitrification and dust removal system |
| CN117823927A (en) * | 2024-03-01 | 2024-04-05 | 江苏优尚环境工程有限公司 | RCO combustion heat accumulation gas collection chamber |
| CN117823927B (en) * | 2024-03-01 | 2024-05-14 | 江苏优尚环境工程有限公司 | RCO combustion heat accumulation gas collection chamber |
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