CN106178846A - Epoxy resin reduces the exhaust system of ECH organic tail gas in producing - Google Patents
Epoxy resin reduces the exhaust system of ECH organic tail gas in producing Download PDFInfo
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- CN106178846A CN106178846A CN201610750552.3A CN201610750552A CN106178846A CN 106178846 A CN106178846 A CN 106178846A CN 201610750552 A CN201610750552 A CN 201610750552A CN 106178846 A CN106178846 A CN 106178846A
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- tail gas
- water spray
- desorption
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
- B01D2259/40088—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating
- B01D2259/4009—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating using hot gas
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention discloses during a kind of epoxy resin produces the exhaust system reducing ECH organic tail gas, including ECH tail gas pretreatment system, Carbon fibe, activated carbon adsorption desorption system are set after ECH tail gas pretreatment system；Described ECH tail gas pretreatment system includes one-level Water spray absorption plant, after one-level Water spray absorption plant, condensing unit is set, two grades of water spray systems are set after condensing unit, after two grades of water spray systems, tail gas foam removal, drying device are set, the condenser of 15 DEG C of freezing liquids is set after tail gas foam removal, drying device, alkali spray equipment is set after the condenser of 15 DEG C of freezing liquids, split-phase Despumation device is set after alkali spray equipment；Described Carbon fibe and/or activated carbon adsorption desorption system include I and II Carbon fibe and/or activated carbon transformation adsorption desorption device.The present invention is easy, energy-conservation, the safety of environmental protection.
Description
Technical field
The present invention relates to reduce during a kind of epoxy resin produces the exhaust system of ECH organic tail gas.
Background technology
The process route of traditional E CH exhaust gas processing device mainly has following two kinds of routes:
Process route one: ECH tail gas uses TQR tower burning disposal, owing to containing C-Cl key in ECH molecule, burns at tail gas
Control improper to produce phosgene such as temperature during burning；ECH burning can waste resource and the energy；Use TQR tower burning disposal cost high,
Tail gas after burning also needs to process further, arranges incinerator at first class explosion-protection equipment and safety in production be there is also certain choosing
War, so epoxy industry seldom uses this technique to process the ECH vent gas treatment during epoxy resin produces.
Process route two: add second order activity with two grade carbon fiber adsorption/desorptions after ECH tail gas is used two to three grades of condensations
Charcoal adsorption desorption technique, owing to ECH causes the hydrolysis of ECH containing moisture when adsorption desorption in carbon fiber:
The hydrochloric acid produced due to ECH hydrolytic process can promote that again the ECH of high concentration produces autohemagglutination, due to shadow after ECH autohemagglutination
The rattle gas adsorption effect to ECH, as occurred, likely there is security incident in emergency case；The glycerol that additionally ECH hydrolysis produces
Boiling point 296 DEG C is difficult to discharge the useful space again after occupying the useful space of carbon fiber, affect the adsorption/desorption effect of carbon fiber, contracts
The desorption cycles that jacket and shorts are put, consumes mass energy, shortens dramatically the service life of Carbon fibe, is also unable to reach country new simultaneously
ECH exhaust emission standard requires that (former industry exhaust emission standard is, in tail gas, ECH content is≤40mg/ cubic meter；2017 7
After month 1 day, country's ECH exhaust emission standard requires to improve, it is desirable in the tail gas after raising ECH content should control≤8mg/ stands
Side's rice)；Reach new standard-required and traditional exhaust gas treating method need to be carried out technological innovation so that it is reach ECH tail gas country
Discharge standard requirement；Maybe by refined for process tail gas return epoxy after compressor compresses, filter pressing, raw material and finished product storage process
Nitrogen protecting system reuse.
Summary of the invention
It is an object of the invention to provide reduction ECH in energy-conservation, the safe epoxy resin production of a kind of simplicity, environmental protection to have
The exhaust system of tail gas.
The technical solution of the present invention is:
A kind of epoxy resin reduces the exhaust system of ECH organic tail gas in producing, it is characterized in that: include that ECH tail gas is located in advance
Reason system, arranges Carbon fibe, activated carbon adsorption desorption system after ECH tail gas pretreatment system；Described ECH tail gas pretreatment system bag
Include one-level Water spray absorption plant, after one-level Water spray absorption plant, condensing unit is set, two grades of water sprays are set after condensing unit
Shower device, arranges tail gas foam removal, drying device after two grades of water spray systems, arrange 15 DEG C of freezings after tail gas foam removal, drying device
The condenser of liquid, arranges alkali spray equipment, arranges split-phase Despumation device after alkali spray equipment after the condenser of 15 DEG C of freezing liquids；
Described Carbon fibe and/or activated carbon adsorption desorption system include I and II Carbon fibe and/or activated carbon transformation adsorption desorption device；
ECH tail gas successively through one-level Water spray absorption plant, condensing unit, two grades of water spray systems, tail gas foam removal, be dried
Device, the condenser of 15 DEG C of freezing liquids, split-phase Despumation device；In I and II Water spray absorption plant, ECH tail gas and spray
Washing absorption water reverse flow, in Water spray absorption plants at different levels, tail gas and the time of contact of shower water were more than 12 seconds, Water spray
ECH waste water of satiating at the bottom of absorption plant tower quantitatively detaches system；Described tail gas foam removal, drying device include being arranged on two grades of Water spray
The defoamed separation device of device tower top and the dehydrating unit before being arranged on the freezing liquid condenser of 15 DEG C, it is ensured that tail gas fixed gas
Condensing unit safety at the freezing liquid that medium is 15 DEG C；Described split-phase Despumation device includes silk screen Despumation device and water
Envelope is except the device of alkali with foam；
Carbon fibe and/or activated carbon adsorption use pressure-fired absorption, and aerodynamic force builds the pressure by engine manifold, works as fixed gas
ECH, Carbon fibe and/or activated carbon adsorption ECH value is reclaimed through Carbon fibe and/or Accumulation with Activated Carbon after Despumation device foam removal
When reaching the 10%-15% of Carbon fibe and/or activated carbon own wt, tail gas intake valve is switched to another Carbon fibe and/
Or charcoal canister carries out ECH absorption；Additionally close to saturated Carbon fibe and/or charcoal canister, absorption ECH is carried out desorption to reclaim
ECH；Desorption uses vacuum to add indirect steam heating desorption and reclaims ECH, and the desorption initial stage is only with in vacuum desorption to adsorbing material
ECH content less than 1% time, open indirect steam heating and take off remaining ECH；After desorption generation tail gas chilled water condensation process not
Solidifying tail gas blower fan is transported to another Carbon fibe and/or charcoal canister adsorbs again.
Described one-level Water spray absorption plant be chilled water temperature be 6 DEG C；Arrange after one-level Water spray absorption plant is cold
Solidifying device, its chilled water temperature is 6 DEG C, and includes I and II condensing unit.
In the condensing unit of 15 DEG C of freezing liquids, the outlet temperature of condenser and freezing liquid enter condenser flow and join
Lock control, system guarantees that condensator outlet gaseous state is stable.
ECH tail gas again after alkali spray equipment processes the EC H content in tail gas drop to≤800mg/ cubic meter, work as alkali
Concentration of lye in spray equipment drop to 2% within time, this part alkali liquor is applied to epoxy resin refined with washing unit.
ECH engine manifold ECH content >=12000mg/ cubic meter of the present invention, through one-level spray absorption and 6 DEG C of freezing water-cooleds
After Ning, engine manifold ECH content is down to 8000 10000mg/ cubic meters；Tail gas is through the freezing liquid of spray with washing-15 DEG C of warp again
After condensation, the ECH lowering of concentration in tail gas is to≤1200mg/ cubic meter；The present invention processes containing ECH vent gas treatment, tail gas
Can reach the national ECH exhaust emission standard requirement will promulgated in July, 2017, ECH content in tail gas after process≤8mg/ cube
Rice.
Additionally during ECH desorption, former technique uses live (open) steam desorption, owing to ECH exists and in the hot environment Yishui River at water
Solving, hydrolyzate is glycerol and hydrochloric acid, due to the boiling point 296 degree of glycerol, owing to glycerol has been occupied behind the space of Carbon fibe with one
As processing method be difficult to again glycerol is cemented out from the space occupied, from face ring Carbon fibe using effect, additionally
The hydrochloric acid corrosive equipment generated, there will be ECH polyreaction in the high ECH concentration medium that hydrochloric acid exists, affects at tail gas
The realization of science and engineering skill, as improper in control easily there is process safety accident.New technology uses negative pressure low temperature desorption, it is to avoid ECH is de-
The hydrolysis of additive process, it is to avoid glycerol and the generation of hydrochloric acid, uses negative-pressure vacuum desorption, and heating technique keeps Carbon fibe and work indirectly
Property charcoal the life cycle of dry guarantee Carbon fibe and granule charcoal.Ensure that the treatment effect of tail gas.
For saving the energy, the compressed process of tail gas after activated carbon adsorption can reach that epoxy is refined, filter pressing, raw material and product
The nitrogen protection requirement of storage of finished products process, after can being compressed processing by the tail gas after processing, application is raw with epoxy resin again
Product system, can be greatly saved the energy and accomplish energy-saving and emission-reduction simultaneously.
Accompanying drawing explanation
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
Fig. 1 is the process flow diagram of one embodiment of the invention.
Detailed description of the invention
A kind of epoxy resin reduces the exhaust system of ECH organic tail gas in producing, including ECH tail gas pretreatment system, ECH
Carbon fibe, activated carbon adsorption desorption system are set after tail gas pretreatment system；Described ECH tail gas pretreatment system includes that one-level water sprays
Drench absorption plant, after one-level Water spray absorption plant, condensing unit is set, two grades of water spray systems are set after condensing unit, two grades
Tail gas foam removal, drying device are set after water spray system, the condensation of 15 DEG C of freezing liquids is set after tail gas foam removal, drying device
Device, arranges alkali spray equipment, arranges split-phase Despumation device after alkali spray equipment after the condenser of 15 DEG C of freezing liquids；Described charcoal is fine
Dimension and/or activated carbon adsorption desorption system include I and II Carbon fibe and/or activated carbon transformation adsorption desorption device；
ECH tail gas successively through one-level Water spray absorption plant, condensing unit, two grades of water spray systems, tail gas foam removal, be dried
Device, the condenser of 15 DEG C of freezing liquids, split-phase Despumation device；In I and II Water spray absorption plant, ECH tail gas and spray
Washing absorption water reverse flow, in Water spray absorption plants at different levels, tail gas and the time of contact of shower water were more than 12 seconds, Water spray
ECH waste water of satiating at the bottom of absorption plant tower quantitatively detaches system；Described tail gas foam removal, drying device include being arranged on two grades of Water spray
The defoamed separation device of device tower top and the dehydrating unit before being arranged on the freezing liquid condenser of 15 DEG C, it is ensured that tail gas fixed gas
Condensing unit safety at the freezing liquid that medium is 15 DEG C；Described split-phase Despumation device includes silk screen Despumation device and water
Envelope is except the device of alkali with foam；The Liquid level of Water spray absorption plant and inflow control, when in sprayed tank ECH reach saturated after
Need ECH saturation water is transferred to ECH wastewater of rectification basin (inflow and liquid level carry out interlocked control) in time, pass through spray washing
Reduce the ECH content in tail gas, reduce the tangential velocity of tail gas simultaneously, joined with 6 DEG C of chilled water inflows by tail gas air inflow
Lock control, makes the realizes maximal efficiency of spray.
Carbon fibe and/or activated carbon adsorption use pressure-fired absorption, and aerodynamic force builds the pressure by engine manifold, works as fixed gas
ECH, Carbon fibe and/or activated carbon adsorption ECH value is reclaimed through Carbon fibe and/or Accumulation with Activated Carbon after Despumation device foam removal
When reaching the 10%-15% of Carbon fibe and/or activated carbon own wt, tail gas intake valve is switched to another Carbon fibe and/
Or charcoal canister carries out ECH absorption；Additionally close to saturated Carbon fibe and/or charcoal canister, absorption ECH is carried out desorption to reclaim
ECH；Desorption uses vacuum to add indirect steam heating desorption and reclaims ECH, and the desorption initial stage is only with in vacuum desorption to adsorbing material
ECH content less than 1% time, open indirect steam heating and take off remaining ECH；After desorption generation tail gas chilled water condensation process not
Solidifying tail gas blower fan is transported to another Carbon fibe and/or charcoal canister adsorbs again.
Described I and II Water spray absorption plant be chilled water temperature be 6 DEG C；Arrange after one-level Water spray absorption plant
Condensing unit, its chilled water temperature is 6 DEG C, and includes I and II condensing unit.
In the condensing unit of 15 DEG C of freezing liquids, the outlet temperature of condenser and freezing liquid enter condenser flow and join
Lock control, system guarantees that condensator outlet gaseous state is stable.
Claims (4)
1. reduce an exhaust system for ECH organic tail gas during epoxy resin produces, it is characterized in that: include ECH tail gas pretreatment
System, arranges Carbon fibe, activated carbon adsorption desorption system after ECH tail gas pretreatment system；Described ECH tail gas pretreatment system includes
One-level Water spray absorption plant, arranges condensing unit after one-level Water spray absorption plant, arranges two grades of Water spray after condensing unit
Device, arranges tail gas foam removal, drying device after two grades of water spray systems, arrange-15 DEG C of freezing liquids after tail gas foam removal, drying device
Condenser, alkali spray equipment is set after the condenser of-15 DEG C of freezing liquids, split-phase Despumation device is set after alkali spray equipment；Institute
State Carbon fibe and/or activated carbon adsorption desorption system includes I and II Carbon fibe and/or activated carbon transformation adsorption desorption device；
ECH tail gas is successively through one-level Water spray absorption plant, condensing unit, two grades of water spray systems, tail gas foam removal, dry dresses
Put, the condenser of-15 DEG C of freezing liquids, split-phase Despumation device；In I and II Water spray absorption plant, ECH tail gas is washed with spray
Washing absorption water reverse flow, in Water spray absorption plants at different levels, tail gas and the time of contact of shower water were more than 12 seconds, and Water spray is inhaled
ECH waste water of satiating at the bottom of receiving apparatus tower quantitatively detaches system；Described tail gas foam removal, drying device include being arranged on two grades of Water spray dresses
Dehydrating unit before the defoamed separation device putting tower top and the freezing liquid condenser being arranged on-15 DEG C, it is ensured that tail gas fixed gas exists
Medium is the condensing unit safety of the freezing liquid of-15 DEG C；Described split-phase Despumation device includes silk screen Despumation device and water seal
Device except alkali Yu foam；
Carbon fibe and/or activated carbon adsorption use pressure-fired absorption, and aerodynamic force builds the pressure, when fixed gas is through removing by engine manifold
Reclaiming ECH through Carbon fibe and/or Accumulation with Activated Carbon after foam device foam removal, Carbon fibe and/or activated carbon adsorption ECH value reach
During the 10%-15% of Carbon fibe and/or activated carbon own wt, tail gas intake valve is switched to another Carbon fibe and/or activity
Canister carries out ECH absorption；Additionally absorption ECH is carried out desorption close to saturated Carbon fibe and/or charcoal canister and reclaim ECH；De-
Attached employing vacuum adds indirect steam heating desorption and reclaims ECH, and the desorption initial stage contains only with the ECH in vacuum desorption to adsorbing material
When amount is less than 1%, opens indirect steam heating and take off remaining ECH；Desorption does not coagulate tail gas and uses after producing tail gas chilled water condensation process
Blower fan is transported to another Carbon fibe and/or charcoal canister adsorbs again.
Epoxy resin the most according to claim 1 reduces the exhaust system of ECH organic tail gas in producing, it is characterized in that: institute
State one-level Water spray absorption plant be chilled water temperature be 6 DEG C；The condensing unit arranged after one-level Water spray absorption plant, it is cold
Freezing coolant-temperature gage is 6 DEG C, and includes I and II condensing unit.
Epoxy resin the most according to claim 1 and 2 reduces the exhaust system of ECH organic tail gas, its feature in producing
It is: in the condensing unit of-15 DEG C of freezing liquids that the outlet temperature of condenser and freezing liquid enter condenser flow and carry out interlocking control,
System guarantees that condensator outlet gaseous state is stable.
Epoxy resin the most according to claim 1 and 2 reduces the exhaust system of ECH organic tail gas, its feature in producing
Be: ECH tail gas again after alkali spray equipment processes the EC H content in tail gas drop to≤800 mg/ cubic meters, when alkali sprays
Concentration of lye in device drop to 2% within time, this part alkali liquor is applied to epoxy resin refined with washing unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610750552.3A CN106178846B (en) | 2016-08-29 | 2016-08-29 | The exhaust system of ECH organic tail gas is reduced in epoxy resin production |
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| CN201610750552.3A CN106178846B (en) | 2016-08-29 | 2016-08-29 | The exhaust system of ECH organic tail gas is reduced in epoxy resin production |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107008107A (en) * | 2017-04-11 | 2017-08-04 | 湖北绿色家园材料技术股份有限公司 | The comprehensive processing method and its processing unit of a kind of phenmethylol production waste gas |
| CN109351127A (en) * | 2016-12-13 | 2019-02-19 | 南通星辰合成材料有限公司 | The exhaust gas treating method of ECH, nitrogen reuse are removed in epoxy resin production |
| CN111389194A (en) * | 2020-04-15 | 2020-07-10 | 无锡厚德石化工程设计有限公司 | Improve alkali lye spray column of epichlorohydrin tail gas absorption rate |
| CN111961189A (en) * | 2020-07-24 | 2020-11-20 | 合肥工业大学 | Refining method of bisphenol A type epoxy resin |
| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109351127A (en) * | 2016-12-13 | 2019-02-19 | 南通星辰合成材料有限公司 | The exhaust gas treating method of ECH, nitrogen reuse are removed in epoxy resin production |
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| CN111389194A (en) * | 2020-04-15 | 2020-07-10 | 无锡厚德石化工程设计有限公司 | Improve alkali lye spray column of epichlorohydrin tail gas absorption rate |
| CN111389194B (en) * | 2020-04-15 | 2022-08-16 | 无锡厚德石化工程设计有限公司 | Improve alkali lye spray column of epichlorohydrin tail gas absorption rate |
| CN111961189A (en) * | 2020-07-24 | 2020-11-20 | 合肥工业大学 | Refining method of bisphenol A type epoxy resin |
| CN111961189B (en) * | 2020-07-24 | 2023-01-06 | 合肥工业大学 | Refining method of bisphenol A type epoxy resin |
| 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 |
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| Publication number | Publication date |
|---|---|
| CN106178846B (en) | 2018-11-23 |
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