CN203123770U - Discharge system capable of reducing organic tail gas during production of basic epoxy resin - Google Patents
Discharge system capable of reducing organic tail gas during production of basic epoxy resin Download PDFInfo
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- CN203123770U CN203123770U CN 201320126690 CN201320126690U CN203123770U CN 203123770 U CN203123770 U CN 203123770U CN 201320126690 CN201320126690 CN 201320126690 CN 201320126690 U CN201320126690 U CN 201320126690U CN 203123770 U CN203123770 U CN 203123770U
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- tail gas
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- fiber absorber
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Abstract
The utility model belongs to the technical field of epoxy resin and relates to a discharge system capable of reducing organic tail gas during production of basic epoxy resin. The discharge system mainly comprises a tail gas buffer tank, a roots pump, a dry vacuum pump, a tail gas condenser, a fan, a two-stage active carbon fiber adsorber, a phase splitter and a separately arranged tail gas pipeline, wherein a gas phase inlet of the tail gas buffer tank is formed in the tangential direction of a tank body; a vortex plate is arranged in the tank; a gas phase outlet in the top of the tank is connected with the roots pump and the dry vacuum pump through a pipeline; the roots pump and the dry vacuum pump are connected in series; the tail gas condenser is arranged at a gas phase outlet of the dry vacuum pump; and the phase splitter is provided with a low-temperature water inner coiled pipe. In the production process of the basic epoxy resin, the discharge of the organic tail gas can be effectively reduced, epoxy chloropropane or extracting solvents can be recovered, the production cost is reduced, the environmental pollution is reduced, and the economic benefit is increased.
Description
Technical field
The utility model relates to the exhaust system that reduces organic tail gas in a kind of foundation ring epoxy resins production, belongs to the epoxy resin production technical field.
Background technology
In foundation ring epoxy resins production process, the polycondensation reaction stage need add excessive epoxychloropropane, in order to improve reaction yield; Refining reaching when washing need add extractant and washings, crude resin is dissolved in the solvent, the sodium chloride salt that generates during reaction is dissolved in the washings, obtain resin solution through standing demix, return production system after excessive epoxychloropropane and extractant need evaporate, reclaim in the said process.
At present, generally adopt the mode of decompression distillation to reclaim epoxychloropropane or extractant.Recovery system mainly adopts first-stage condenser (cooling medium is recirculated water) and secondary condenser (cooling medium is water at low temperature), vacuum system adopts the mode of the series connection of lobe pump and water ring vacuum pump, overwhelming majority epoxychloropropane or extractant are collected into phase-splitter by a condenser system, uncooled gas phase is behind water ring vacuum pump, final with install in other fixed gas merge to engine manifold mutually, high altitude discharge is to atmosphere or by discharging behind the torch burning.
Reclaiming epoxychloropropane with the decompression distillation of the foundation ring epoxy resins stage of reaction is example, epoxychloropropane is slightly soluble in water, solubility is about 6 g/100ml in the water at normal temperature, the uncooled epoxychloropropane gas that contains is when the water ring vacuum pump, part is absorbed in the working solution-water of closed cycle, caused the regular waste discharge of vavuum pump, the vavuum pump discharge tail gas enters the exhaust emissions house steward, and the epoxychloropropane of some, benzene,toluene,xylene mixed tail gas drain in the atmospheric environment through the high-altitude.According to the data of " epoxy resin emission of industrial pollutants standard " (exposure draft) statistics, the about 2.0m of the water yield of foundation ring epoxy resins production process intermediate pump recycling waste water
3/ t product, the about 500mg/l of chemical oxygen consumption (COC) (COD) calculates according to producing 50000 tons of epoxy resin per year, annual wastewater treatment capacity 100000 m that produce
3(be m every days 300
3).The efficient of a condenser system of epoxychloropropane recovery system is general about 70%, and condensation efficiency of the condenser of sophistication is about 95%, still has the organic tail gas that contains epoxychloropropane to drain in the atmosphere after water ring vacuum pump absorbs.This shows that above-mentioned production technology is unfavorable for energy-saving and emission-reduction, epoxychloropropane consumes higher.
Extractant generally adopts toluene, methylisobutylketone etc., has above-mentioned situation equally.
Summary of the invention
The purpose of this utility model is to overcome in the prior art, and the deficiency that the exhaust emissions system exists in the foundation ring epoxy resins production process provides a kind of exhaust system that can effectively reduce organic tail gas.
The technical scheme that provides according to the utility model: the exhaust system that reduces organic tail gas during a kind of foundation ring epoxy resins is produced, be characterised in that: tank body tangent line orientation, the tail gas buffer outside is connected with the gas phase pipe, described tail gas buffer arc top connects lobe pump and the dry vacuum pump that series connection arranges by pipeline, pipeline between described tail gas buffer and lobe pump arranges first pneumatic operated valve, second pneumatic operated valve is connected in parallel on the series arm two ends of first pneumatic operated valve and lobe pump formation, the gaseous phase outlet end of described dry vacuum pump connects the arrival end of tail gas condenser by pipeline, the port of export of tail gas condenser connects blower fan successively by pipeline, the first activated carbon fiber absorber, the second activated carbon fiber absorber, the desorption outlet of the described first activated carbon fiber absorber, phase-splitter is connected in the desorption outlet of the second activated carbon fiber absorber respectively, and described phase-splitter is provided with water pipe and oil phase pipe.
As further improvement of the utility model, described tail gas condenser is provided with reuse mouth and the low temperature mouth of a river, and described reuse mouth is connected with pneumatic operated valve.
As further improvement of the utility model, the floss hole of the described first activated carbon fiber absorber connects the arrival end of the second activated carbon fiber absorber, the floss hole of the second activated carbon fiber absorber connects the tail gas aiutage, and the low pressure water vapor mouth of the described first activated carbon fiber absorber connects the low pressure water vapor mouth of the second activated carbon fiber absorber.
As further improvement of the utility model, described phase-splitter is provided with visual windows, so that observe the layering situation in the phase-splitter.
As further improvement of the utility model, be provided with in the tank body of described tail gas buffer for the eddy plate of strengthening vapor-liquid separation.
The utility model compared with prior art, advantage is: one, do not produce the vavuum pump recycling waste water, realize the vavuum pump wastewater zero discharge; Two, behind tail gas of vacuum gas pump process tail gas condenser and the activated carbon fiber absorber, the content of organic tail gas reduces greatly, and clearance reaches more than 95%, and environmental pollution reduces; Three, reclaim epoxychloropropane or extractant, reduce raw materials consumption, increase economic efficiency.To reclaim to produce 50000 tons of foundation ring epoxy resins stage of reaction decompression distillation per year that discharging tail gas is example after the condensation of epoxychloropropane, every day only the activated carbon fiber absorber with regard to more than the recyclable epoxychloropropane 600kg, add the yield of preposition tail gas condenser, reclaim epoxychloropropane every day and reach more than 1000 kg.
Description of drawings
Fig. 1 is structural representation of the present utility model.
The specific embodiment
The utility model is described in further detail below in conjunction with concrete drawings and Examples.
As shown in Figure 1, comprise gas phase pipe 1, tail gas buffer 2, lobe pump 3, first pneumatic operated valve 4, second pneumatic operated valve 5, dry vacuum pump 6, tail gas condenser 7, blower fan 8, the first activated carbon fiber absorber 9, the second activated carbon fiber absorber 10, tail gas aiutage 11, phase-splitter 12, water pipe 13, oil phase pipe 14, reuse mouth 15, first hand-operated valve 16, second hand-operated valve 17, the 3rd hand-operated valve 18, coolant outlet 19, cooling water inlet 20 etc.
As shown in Figure 1, the utility model is the exhaust system that reduces organic tail gas during a kind of foundation ring epoxy resins is produced, tank body tangent line orientation, tail gas buffer 2 outside is connected with gas phase pipe 1, described tail gas buffer 2 arc tops connect lobe pump 3 and the dry vacuum pump 6 that series connection arranges by pipeline, the bottom of tail gas buffer 2 is provided with condensate liquid and reclaims mouth, and condensate liquid reclaims mouth and is connected with control condensate liquid recovery mouthful the 3rd hand-operated valve 18 that opens and closes, pipeline between described tail gas buffer 2 and lobe pump 3 arranges first pneumatic operated valve 4, second pneumatic operated valve 5 is connected in parallel on the series arm two ends of first pneumatic operated valve 4 and lobe pump 3 formations, the gaseous phase outlet end of described dry vacuum pump 6 connects the arrival end of tail gas condenser 7 by pipeline, the port of export of tail gas condenser 7 connects blower fan 8 successively by pipeline, the first activated carbon fiber absorber 9, the second activated carbon fiber absorber 10, the desorption outlet of the described first activated carbon fiber absorber 9, phase-splitter 12 is connected in the desorption outlet of the second activated carbon fiber absorber 10 respectively, and described phase-splitter 12 is provided with water pipe 13 and oil phase pipe 14.Described tail gas condenser 7 is provided with reuse mouth 15 and the low temperature mouth of a river, and described reuse mouth 15 is connected with pneumatic operated valve.
The floss hole of the described first activated carbon fiber absorber 9 connects the arrival end of the second activated carbon fiber absorber 10, the floss hole of the second activated carbon fiber absorber 10 connects tail gas aiutage 11, and the described first activated carbon fiber absorber 9 is connected low pressure water vapor respectively with the second activated carbon fiber absorber 10.Described phase-splitter 12 is provided with visual windows, so that observe the layering situation in the phase-splitter 12, also is provided with on the phase-splitter 12 for the water at low temperature of cooling desorption liquid and imports and exports and inner coil pipe.Be provided with in the tank body of described tail gas buffer 2 for the eddy plate of strengthening vapor-liquid separation.
The utility model adopts lobe pump 3 and dry vacuum pump 6 series systems to replace the connected mode of traditional lobe pump 6 and water-ring vacuum pump, simultaneously the normal pressure tail gas behind the dry vacuum pump 6 is arranged tail gas condenser 7 condensation recovery again, and the pipeline of on-condensible gas by independent setting entered the activated carbon fiber absorber, the activated carbon desorption reclaims liquid after phase-splitting, water goes recycling (or reuse), epoxychloropropane phase (or extractant phase) is returned production system, and the exhaust emissions system branch that contains epoxychloropropane and extractant is arranged.
The utility model course of work is as follows: the epoxychloropropane gas phase through a condensation after, uncooled gas phase adopts lobe pump 3 and dry vacuum pump 6 series systems to vacuumize (vacuum is connected with dry vacuum pump 6 after requiring to select 3 series connection of two lobe pumps for use when high again) through gas phase pipe 1, open pneumatic operated valve 5 during operation earlier, start dry vacuum pump 6, when treating that vacuum arrives setting pressure, automatically start lobe pump 3 and close pneumatic operated valve 5, open pneumatic operated valve 4 simultaneously, namely vacuum system is pressed setup parameter by pressure transmitter and pneumatic operated valve and is realized control automatically; Dry vacuum pump 6 gaseous phase outlets are connected tail gas condenser 7, adopt water at low temperature that the further condensation of the organic tail gas under the atmospheric pressure state is reclaimed, and the condensate liquid reuse is to production system; Uncooled gas by blower fan 8 enter the first activated carbon fiber absorber 9 successively, the second activated carbon fiber absorber 10 adsorbs, close first hand-operated valve 16, second hand-operated valve 17 that is arranged between phase-splitter 12 and the first activated carbon fiber absorber 9, the second activated carbon fiber absorber 10 this moment, the tail gas after the absorption passes through tail gas aiutage 11 high altitude discharges; Adsorb saturated activated carbon fiber and carry out desorption with water vapour, desorption adopts the direction opposite with absorption to carry out, open first hand-operated valve 16 during desorption, second hand-operated valve 17, desorption reclaims liquid and carries out layering from flowing to phase-splitter 12, visual windows is set on the phase-splitter 12 is used for observing the layering situation, containing micro-epoxychloropropane in the water on upper strata handles from diffluence stripper recovery system by water pipe 13, lower floor's epoxychloropropane is managed 14 reuses to production system mutually by epoxychloropropane, on phase-splitter 12, also be provided with coolant outlet 19 and cooling water inlet 20, so that the circulation of cooling water, to cooling off from the recovery liquid that flow to phase-splitter 12 behind the desorption.
The utility model not only be confined to the foundation ring epoxy resins produce in to the recovery of epoxychloropropane, negative pressure reclaims the discharging of uncooled tail gas behind the solvent in the productions such as the vent gas treatment after the decompression distillation that also is applicable to extractant is reclaimed and o-cresol formaldehyde epoxy resin, brominated epoxy resin.As the vent gas treatment after the decompression distillation of extractant is reclaimed, its technical scheme is similar to epoxychloropropane: once condensed gas phase is behind lobe pump 3, dry vacuum pump 6, tail gas condenser 7, tail gas enters activated carbon fiber absorber absorption back high altitude discharge, desorption reclaims liquid and is layered as water and solvent mutually with phase-splitter 12 collections, aqueous phase contains solvent and can be used as the washings reuse to refined unit, and solvent returns production system mutually.
Continuously during the production operation situation, can increase a standby activated carbon fiber absorber, blower fan, activated carbon fiber absorber and connecting line, valve etc. can adopt the PLC programme-control by the complete set of equipments setting, automatically switch, absorption, desorption manipulation hocket.
System described in the utility model is carried out proportionally dwindling or enlarging, suitably improve, replace the annexation between building block or the building block, will become apparent to those skilled in the art that they all are regarded as being included in the utility model scope.
Claims (5)
1. reduce the exhaust system of organic tail gas during a foundation ring epoxy resins is produced, it is characterized in that: tank body tangent line orientation, tail gas buffer (2) outside is connected with gas phase pipe (1), described tail gas buffer (2) top connects lobe pump (3) and the dry vacuum pump (6) that series connection arranges by pipeline, pipeline between described tail gas buffer (2) and lobe pump (3) arranges first pneumatic operated valve (4), second pneumatic operated valve (5) is connected in parallel on the series arm two ends of first pneumatic operated valve (4) and lobe pump (3) formation, the gaseous phase outlet end of described dry vacuum pump (6) connects the arrival end of tail gas condenser (7) by pipeline, the port of export of tail gas condenser (7) connects blower fan (8) successively by pipeline, the first activated carbon fiber absorber (9), the second activated carbon fiber absorber (10), the desorption outlet of the described first activated carbon fiber absorber (9), phase-splitter (12) is connected in the desorption outlet of the second activated carbon fiber absorber (10) respectively, and described phase-splitter (12) is provided with water pipe (13) and oil phase pipe (14).
2. reduce the exhaust system of organic tail gas during foundation ring epoxy resins as claimed in claim 1 is produced, it is characterized in that: described tail gas condenser (7) is provided with reuse mouth (15) and the low temperature mouth of a river, and described reuse mouth (15) is connected with pneumatic operated valve.
3. reduce the exhaust system of organic tail gas during foundation ring epoxy resins as claimed in claim 1 is produced, it is characterized in that: the floss hole of the described first activated carbon fiber absorber (9) connects the arrival end of the second activated carbon fiber absorber (10), the floss hole of the second activated carbon fiber absorber (10) connects tail gas aiutage (11), and the low pressure water vapor mouth of the described first activated carbon fiber absorber (9) connects the low pressure water vapor mouth of the second activated carbon fiber absorber (10).
4. reduce the exhaust system of organic tail gas during foundation ring epoxy resins as claimed in claim 1 is produced, it is characterized in that: described phase-splitter (12) is provided with visual windows, so that observe the layering situation in the phase-splitter (12).
5. reduce the exhaust system of organic tail gas during foundation ring epoxy resins as claimed in claim 1 is produced, it is characterized in that: be provided with in the tank body of described tail gas buffer (2) for the eddy plate of strengthening vapor-liquid separation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320126690 CN203123770U (en) | 2013-03-19 | 2013-03-19 | Discharge system capable of reducing organic tail gas during production of basic epoxy resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320126690 CN203123770U (en) | 2013-03-19 | 2013-03-19 | Discharge system capable of reducing organic tail gas during production of basic epoxy resin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203123770U true CN203123770U (en) | 2013-08-14 |
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ID=48931800
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320126690 Expired - Lifetime CN203123770U (en) | 2013-03-19 | 2013-03-19 | Discharge system capable of reducing organic tail gas during production of basic epoxy resin |
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| CN (1) | CN203123770U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103432767A (en) * | 2013-08-29 | 2013-12-11 | 张家港市三联化工科技有限公司 | Recovery device of extraction solvent MIBK (Methyl Iso Butyl Ketone) flash evaporation |
| CN103446842A (en) * | 2013-08-30 | 2013-12-18 | 张家港市三联化工科技有限公司 | Tail gas treatment device for MAQ-ME (R-(+)-2-(4-Hydroxyphenoxy) drying |
| CN106178846A (en) * | 2016-08-29 | 2016-12-07 | 南通星辰合成材料有限公司 | Epoxy resin reduces the exhaust system of ECH organic tail gas in producing |
| PL425052A1 (en) * | 2018-03-28 | 2019-10-07 | Icso Chemical Production Spółka Z Ograniczoną Odpowiedzialnością | Method for reduction of emission of volatile organic compounds and the system for its execution |
| CN111450565A (en) * | 2020-05-09 | 2020-07-28 | 江阴华西节能技术有限公司 | Dry vacuum main engine for alcohol extraction process and tail gas purification method thereof |
| CN111618075A (en) * | 2020-06-16 | 2020-09-04 | 无锡厚德石化工程设计有限公司 | Comprehensive treatment device and method for aged resin |
| CN114307523A (en) * | 2020-09-27 | 2022-04-12 | 济南圣泉集团股份有限公司 | Clean production process in chemical production field |
| CN115501722A (en) * | 2021-06-23 | 2022-12-23 | 南通星辰合成材料有限公司 | Method for treating epichlorohydrin tail gas |
| CN116272232A (en) * | 2023-02-22 | 2023-06-23 | 苏州博瑞达高分子材料有限公司 | Condensation recovery device and method for brominated epoxy resin |
-
2013
- 2013-03-19 CN CN 201320126690 patent/CN203123770U/en not_active Expired - Lifetime
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103432767A (en) * | 2013-08-29 | 2013-12-11 | 张家港市三联化工科技有限公司 | Recovery device of extraction solvent MIBK (Methyl Iso Butyl Ketone) flash evaporation |
| CN103446842A (en) * | 2013-08-30 | 2013-12-18 | 张家港市三联化工科技有限公司 | Tail gas treatment device for MAQ-ME (R-(+)-2-(4-Hydroxyphenoxy) drying |
| CN103446842B (en) * | 2013-08-30 | 2016-01-20 | 张家港市三联化工科技有限公司 | For the exhaust gas processing device of MAQ-ME drying |
| CN106178846A (en) * | 2016-08-29 | 2016-12-07 | 南通星辰合成材料有限公司 | Epoxy resin reduces the exhaust system of ECH organic tail gas in producing |
| CN106178846B (en) * | 2016-08-29 | 2018-11-23 | 南通星辰合成材料有限公司 | The exhaust system of ECH organic tail gas is reduced in epoxy resin production |
| PL425052A1 (en) * | 2018-03-28 | 2019-10-07 | Icso Chemical Production Spółka Z Ograniczoną Odpowiedzialnością | Method for reduction of emission of volatile organic compounds and the system for its execution |
| CN111450565A (en) * | 2020-05-09 | 2020-07-28 | 江阴华西节能技术有限公司 | Dry vacuum main engine for alcohol extraction process and tail gas purification method thereof |
| CN111618075A (en) * | 2020-06-16 | 2020-09-04 | 无锡厚德石化工程设计有限公司 | Comprehensive treatment device and method for aged resin |
| CN111618075B (en) * | 2020-06-16 | 2021-06-15 | 无锡厚德石化工程设计有限公司 | Comprehensive treatment device and method for aged resin |
| CN114307523A (en) * | 2020-09-27 | 2022-04-12 | 济南圣泉集团股份有限公司 | Clean production process in chemical production field |
| CN115501722A (en) * | 2021-06-23 | 2022-12-23 | 南通星辰合成材料有限公司 | Method for treating epichlorohydrin tail gas |
| CN116272232A (en) * | 2023-02-22 | 2023-06-23 | 苏州博瑞达高分子材料有限公司 | Condensation recovery device and method for brominated epoxy resin |
| CN116272232B (en) * | 2023-02-22 | 2024-04-05 | 苏州博瑞达高分子材料有限公司 | Condensation recovery device and method for brominated epoxy resin |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130814 |