CN107899402A - Propylene oxide by chlorohydrination device exhaust processing method - Google Patents
Propylene oxide by chlorohydrination device exhaust processing method Download PDFInfo
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- CN107899402A CN107899402A CN201711213873.0A CN201711213873A CN107899402A CN 107899402 A CN107899402 A CN 107899402A CN 201711213873 A CN201711213873 A CN 201711213873A CN 107899402 A CN107899402 A CN 107899402A
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- gas
- chlorohydrination
- valve
- wind turbine
- propylene oxide
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- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 238000003672 processing method Methods 0.000 title claims abstract description 12
- 239000007789 gas Substances 0.000 claims abstract description 82
- 239000003513 alkali Substances 0.000 claims abstract description 33
- 238000000034 method Methods 0.000 claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000002485 combustion reaction Methods 0.000 claims abstract description 13
- 239000003518 caustics Substances 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 claims abstract description 8
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims abstract description 6
- 150000003839 salts Chemical class 0.000 claims abstract description 5
- 239000013589 supplement Substances 0.000 claims abstract description 5
- 239000002737 fuel gas Substances 0.000 claims abstract description 4
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 230000001105 regulatory effect Effects 0.000 claims description 14
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims description 13
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims description 10
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims description 9
- 230000009191 jumping Effects 0.000 claims description 8
- 239000001294 propane Substances 0.000 claims description 6
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 4
- 239000000460 chlorine Substances 0.000 claims description 4
- 229910052801 chlorine Inorganic materials 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims description 3
- 239000010815 organic waste Substances 0.000 claims 1
- 238000010304 firing Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 7
- 239000001301 oxygen Substances 0.000 description 7
- 229910052760 oxygen Inorganic materials 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- 238000007254 oxidation reaction Methods 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 5
- 239000000446 fuel Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 150000001335 aliphatic alkanes Chemical class 0.000 description 3
- 150000001336 alkenes Chemical class 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000003463 adsorbent Substances 0.000 description 2
- 150000001345 alkine derivatives Chemical class 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001699 photocatalysis Effects 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- 206010017472 Fumbling Diseases 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000002779 inactivation Effects 0.000 description 1
- 239000000543 intermediate Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000010525 oxidative degradation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000007146 photocatalysis Methods 0.000 description 1
- 239000011941 photocatalyst Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000003578 releasing effect Effects 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000009469 supplementation Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
-
- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/38—Removing components of undefined structure
- B01D53/40—Acidic components
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L5/00—Blast-producing apparatus before the fire
- F23L5/02—Arrangements of fans or blowers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2207/00—Control
- F23G2207/10—Arrangement of sensing devices
- F23G2207/108—Arrangement of sensing devices for hydrocarbon concentration
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2207/00—Control
- F23G2207/20—Waste supply
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2207/00—Control
- F23G2207/30—Oxidant supply
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Treating Waste Gases (AREA)
Abstract
The propylene oxide by chlorohydrination device exhaust processing method of the present invention, propylene oxide unit chlorohydrination organic exhaust gas remove sour gas through caustic wash tower；Then safe water sealed cans are introduced, water sealed tank is equipped with air intlet, enters wind turbine together after chlorohydrination organic exhaust gas and supplement air mixing；Gas detects fuel gas content through the online gas detecting instruments of VOC in fan outlet pipeline, then piece alkali equipment safety water sealed tank is delivered to after remote control liquid flowmeter measures；Enter back into molten salt furnace to be burned as combustion air, and be used for determining it is security in work including interlocking control method.This technique is by tail gas Macrodilution, reach less than the 25% of the explosible limit concentration of tail gas each component, then the combustion air as incinerator is burned, it is not only safe for operation, and can be fully effective to exhaust gas processing, on specific combustion apparatus even can recycle heat or save firing rate.
Description
Technical field
The present invention provides propylene oxide by chlorohydrination device exhaust processing method, applied to generation alkane, alkene and alkynes
Deng the chemical plant installations of organic exhaust gas.
Background technology
Existing tail gas disposal technique has as follows：
1st, absorption method：It is main to use adsorbent, such as activated carbon to carry out adsorption treatment, periodic replacement absorption to organic tail gas
Agent.But this method is required supplementation with and regenerated there are adsorbent；The exhaust gas higher to temperature needs first to cool down；Complex waste gas needs
Pretreatment.
The major defect of this method is：Need to be operated under the conditions of certain pressure, filled for propylene oxide by chlorohydrination
For the tail gas put, the concentration of oxygen is higher 45% or so in tail gas, if be compressed to the tail gas, there is the danger of explosion.
Secondly if separating process selection is improper there are secondary pollution problems, so absorption method is not suitable for propylene oxide by chlorohydrination device tail
The processing of gas.
2nd, low-temperature plasma method：Exhaust gas after washing enters low-temperature plasma equipment after demister removes moisture
Processing system, the gas into low-temperature plasma equipment are free from moisture, dustless, agranular, and exhaust gas enters plasma apparatus,
Under the action of high energy electron, odor molecules are made to be stimulated, charged particle or intermolecular chemical bond are interrupted, while in air
Water and oxygen high energy electron bombardment under can also produce the oxidizing species such as OH free radicals, active oxygen, these Strong oxdiatives
Property material and organic gas molecule react, make its decomposition.This method has security risk；Take up a large area and have generation secondary pollution
Possibility, mechanism is to be studied.
The major defect of this method is：Spark discharge is also easy to produce, under peak voltage, reactor is also easy to produce spark and puts
Electricity, for propylene oxide unit tail gas, oxygen content is very high in organic tail gas, easily explodes.And for low temperature etc.
The requirements such as configuration design of the ion device to part of appliance, the accuracy of manufacture, tightness are very high.Such as to electric field frequency, voltage, height
The parameters such as the pulse of frequency, if some parameter therein does not reach requirement in complete set of equipments, as voltage electricity is low, frequency is excessive or mistake
It is low that very big influence can be caused to the yield of gas ions, or even can cause to explode, country's exhaust-gas treatment uses low temperature at present
Plasma technology is immature, in the stage of fumbling, so the technology is not suitable for the vent gas treatment of propylene oxide by chlorohydrination device.
3rd, photocatalytic oxidation：Exhaust gas is sent into waste gas purification unit after being introduced into total pipeline, is carried out in concentration homogenizer
Chemical Pretreatment, the cleaning solution used is acidic cleaning liquid.Absorption and releasing effect of this absorbing liquid to exhaust gas are obvious.Pass through
Absorption of the absorbing liquid to exhaust gas key component, it is ensured that the stabilization of exhaust gas concentration.Enter by the pretreated exhaust gas of scrubbing tower
Photocatalysis oxidation reaction tower.Photochemical oxidation technology is to make organic pollution oxidative degradation anti-under visible ray or action of ultraviolet light
Should, gas is finally by wind turbine, exhaust tube high altitude discharge.
The shortcomings that catalytic oxidation technologies：This method uses photocatalyst, there is the problem of catalyst inactivation；To high bond energy chemistry
Key, it is impossible to open, oxidation efficiency is limited, and since reaction condition is limited, photochemical oxidation degraded often not enough thoroughly, is easily produced
Raw a variety of organic intermediates, so the technology is not suitable for the processing of propylene oxide by chlorohydrination device exhaust.
Existing tail gas treatment process all can not achieve to propylene oxide by chlorohydrination device tail in petroleum chemical industry at present
Effective thoroughly processing of gas, we have invented chlorohydrination ring after the analysis to chlorohydrination exhaust gas component and each constitutive property
Ethylene Oxide device exhaust is diluted to the technology burned after safe concentration as combustion air.The technology burns skill with conventional exhaust
Art is different, is to be burned tail gas as fuel, if propylene oxide by chlorohydrination device in oil refining and other chemical plant installations
Tail gas directly burns, and combustable organic thing concentration is low nonflammable, furthermore, propylene oxide by chlorohydrination device exhaust oxygen concentration compared with
Height, there is the danger of back draft in burning process.This technique is not only safe for operation, and can be fully effective to exhaust gas place
Reason, heat can be even recycled on specific combustion apparatus or saves firing rate.
The content of the invention
1st, technical problems to be solved
For solve it is of the prior art there are security risk, need after-treatment and purification be not thorough the defects of, the present invention
Propylene oxide by chlorohydrination device exhaust processing method is provided, solves the organic exhaust gas such as chemical plant installations alkane, alkene and alkynes
Discharge the pollution problem brought.
2nd, technical solution
The purpose of the present invention is mainly realized by following technical solution.
The propylene oxide by chlorohydrination device exhaust processing method of the present invention, comprises the following steps：
1) propylene oxide unit chlorohydrination organic exhaust gas removes sour gas through caustic wash tower；
2) organic exhaust gas for removing sour gas is introduced into safe water sealed cans, water sealed tank is equipped with supplement air intlet, chloropharin
Enter wind turbine together after changing organic exhaust gas and supplement air mixing；
3) gas detects fuel gas content through the online gas detecting instruments of VOC in fan outlet pipeline, then through teletransmission flow
Piece alkali equipment safety water sealed tank is delivered to after meter metering；
4) gas is burned by piece alkali wind turbine feeding molten salt furnace as combustion air in piece alkali equipment safety water sealed tank.
Interlocking control method is further included, the interlocking control method passes through the total concentration of propylene in tail gas and propane, tail gas
Proportioning K values, compressor flow and the blower fan work state of middle chlorine and propylene, pass through detected parameter and realize following interlocking control
System：
(1) as the total concentration ＞ 0.5% of propylene and propane, emptying regulating valve and emptying quck-opening valve are opened at the same time, wind turbine
Chain stop jumping, send piece alkali stop valve to close；
(2) when matching K value ＞ 0.6200, emptying regulating valve and emptying quck-opening valve are opened at the same time, and the chain stop jumping of wind turbine, send
Piece alkali stop valve is closed；
(3) as compressor flow ＜ 5000m3During/h, emptying regulating valve and emptying quck-opening valve are opened at the same time, the chain jump of wind turbine
Stop, send piece alkali stop valve to close；
(4) when wind turbine is out of service suddenly, emptying regulating valve and emptying quck-opening valve are opened at the same time, send piece alkali stop valve to close
Close.
Further, the gas as combustion air, wherein the concentration of each combustible component reaches its explosible limit concentration
Less than 25%.
Further, in step 4), piece alkali wind turbine is provided with the curved pumping equipment of band " N " type, for draining and holding
Manifold pressure.
Further, according to the requirement of gas course of conveying security control, set in Caustic Wash Tower of Epoxy Propane drain tight
Anxious exhaust-valve, sets quick action emergency valve in wind turbine conveying outlet line, is set in piece alkali equipment safety water sealed tank air inlet urgent
Exhaust-valve.
3rd, beneficial effect：
Compared with prior art, the beneficial effect of propylene oxide by chlorohydrination device exhaust processing method of the invention is：
Conventional exhaust burning process is typically employed in the higher oil refining apparatus and chemical plant installations of tail gas concentration, such device one
As be designed with combustion furnace or torch, tail gas is directly burnt as fuel, and is had to propylene oxide by chlorohydrination device is this
For the machine thing concentration very higher tail gas of low oxygen content, conventional incineration technology cannot use.It is chlorohydrination epoxy third first
The tail gas concentration of alkane device is very low, and burning is very unstable or cannot light；Even if secondly carried out by increasing the method for fuel
Burning, due in tail gas oxygen it is dense, have the danger of back draft, both features determine chlorohydrination organic exhaust gas not
It can be burnt using conventional incineration technique.
So the present invention program carries out large quantity of air dilution to the exhaust gas of propylene oxide by chlorohydrination device, will be main organic
Combustible concentration be diluted to organic matter in atmosphere lower explosion limit less than 25%, this meets country of People's Republic of China (PRC) ring
Border protective standard《Air contaminant treatment engineering technology directive/guide》The safety requirements of HJ2000-2010 6.4.5 bars, is then used as and burns
The combustion air for burning stove carries out burning disposal.Also can thoroughly it be handled in the tail gas of other petrochemical plant analogous components composition,
By burning, organic compounds processing is thorough, and there is no the problem of secondary pollution, and the technology is safe and reliable, in spy
Fuel or recycling thermal energy can also be saved on fixed combustion apparatus.
Although 2) feature of the present invention is tail gas incineration treatment technology, conventional incineration technique, this technique are different from
Operate more economical safety.
Brief description of the drawings
Fig. 1 is the device flow chart of the production method of the present invention.
In figure：1- caustic wash towers, 2- safe water sealed cans, 3- wind turbines, 4- piece alkali equipment safety water sealed tanks, 5- piece alkali wind turbines, 6-
Molten salt furnace, 7-VOC detectors, 8- remote control liquid flowmeters, 9- send piece alkali stop valve, 10- emptying quck-opening valves, and 11- is vented regulating valve,
12- two level alkali tanks, 13- " N " type is curved, 14- clean waters.
Embodiment
Hereinafter, the specific embodiment of the present invention is described in detail in refer to the attached drawing, detailed according to these
Description, one of ordinary skill in the art can implement the present invention it can be clearly understood that the present invention.Without prejudice to the principle of the invention
In the case of, the feature in each different embodiment can be combined to obtain new embodiment, or is substituted some
Some features in embodiment, obtain other preferred embodiments.
Fig. 1 shows the propylene oxide by chlorohydrination device exhaust processing method formed according to the preferred embodiment of the present invention.Such as
Shown in Fig. 1, propylene oxide unit chlorohydrination tail gas introduces safe water sealed cans 2, water sealed tank 2 after caustic wash tower 1 removes sour gas
Equipped with air intlet, enter wind turbine 3 together after chlorohydrination organic exhaust gas and supplement air mixing, gas passes through in fan outlet pipeline
The online gas detecting instruments 7 of VOC detect fuel gas content, then are delivered to piece alkali equipment safety water after the metering of remote control liquid flowmeter 8
Sealed cans 4, then enter molten salt furnace 6 through piece alkali wind turbine 5 again and are burned as combustion air.Since gas passes through Safety water seal, gas
Moisture is higher in body, in gas course of conveying, piece alkali wind turbine pipeline low spot design band curved 13 pumping equipment of " N " type, both
Energy draining, and manifold pressure can be kept.According to the requirement of gas course of conveying security control, it is vented in Caustic Wash Tower of Epoxy Propane
Mouth sets emergent evacuation valve, sets quick action emergency valve in wind turbine conveying outlet line, is set in piece alkali device water sealed tank air inlet
Emergent evacuation valve.
Wherein, the tail gas composition of propylene oxide by chlorohydrination device：
In order to realize the safe handling of chlorohydrination tail gas, which is provided with following interlocking：In wind turbine 3 and piece
It is connected with the online gas detecting instruments 7 of VOC, remote control liquid flowmeter 8 between alkali equipment safety water sealed tank 4 in turn, send piece alkali stop valve 9,
The top of caustic wash tower 1 connection emptying quck-opening valve 10 and emptying regulating valve 11.The online gas detecting instruments 7 of VOC are detected third in tail gas
The total concentration of alkene and propane；The interlock control system also detect the proportioning K values of chlorine and propylene in tail gas, compressor flow and
Blower fan work state；The interlock control system passes through detected parameter and realizes interlocked control, and specific control is as follows：
(1) VOC detectors detect propylene (C3H6) and propane (C3H8) total gas concentration ＞ 0.5%, and interlocking result is
Emptying regulating valve 11 and emptying quck-opening valve 10 are opened at the same time, and 3 chain stop jumping of wind turbine, send piece alkali stop valve 9 to close.
(2) K values ＞ 0.6200 is matched, interlocking result is opened at the same time for emptying regulating valve 11 and emptying quck-opening valve 10, wind turbine 3
Chain stop jumping, send piece alkali stop valve 9 to close；The K values are the proportioning of chlorine and propylene in organic tail gas.
(3) compressor flow ＜ 4000m3/ h, interlocking result are opened at the same time for emptying regulating valve 11 and emptying quck-opening valve 10, wind
3 chain stop jumping of machine, send piece alkali stop valve 9 to close.
(4) wind turbine is out of service suddenly, and interlocking result is opened at the same time for emptying regulating valve 11 and emptying quck-opening valve 10, send piece
Alkali stop valve 9 is closed.
Although above by referring to specific embodiment, invention has been described, and one of ordinary skill in the art should
Work as understanding, in principle disclosed by the invention and scope, configuration disclosed by the invention can be directed to and details makes many modifications.
Protection scope of the present invention is determined by appended claim, and claim is intended to technical characteristic in claim
Equivalent literal meaning or whole modifications for being included of scope.
Claims (4)
1. propylene oxide by chlorohydrination device exhaust processing method, comprises the following steps：
1) propylene oxide unit chlorohydrination organic exhaust gas removes sour gas through caustic wash tower；
2) organic exhaust gas for removing sour gas is introduced into safe water sealed cans, water sealed tank is equipped with air intlet, chlorohydrination organic waste
Enter wind turbine together after gas and supplement air mixing；
3) gas detects fuel gas content through the online gas detecting instruments of VOC in fan outlet pipeline, then through remote control liquid flowmeter meter
Piece alkali equipment safety water sealed tank is delivered to after amount；
4) gas is burned by piece alkali wind turbine feeding molten salt furnace as combustion air in piece alkali equipment safety water sealed tank；
It is characterized in that：Further include interlocking control method, the interlocking control method is total dense by propylene in tail gas and propane
Proportioning K values, compressor flow and the blower fan work state of chlorine and propylene in degree, tail gas, pass through detected parameter and realize such as
Lower interlocked control：
(1) as the total concentration ＞ 0.5% of propylene and propane, emptying regulating valve and emptying quck-opening valve are opened at the same time, and wind turbine is chain
Stop jumping, send piece alkali stop valve to close；
(2) when matching K value ＞ 0.6200, emptying regulating valve and emptying quck-opening valve are opened at the same time, and the chain stop jumping of wind turbine, send piece alkali
Stop valve is closed；
(3) as compressor flow ＜ 5000m3During/h, emptying regulating valve and emptying quck-opening valve are opened at the same time, and the chain stop jumping of wind turbine, send piece
Alkali stop valve is closed；
(4) when wind turbine is out of service suddenly, emptying regulating valve and emptying quck-opening valve are opened at the same time, send piece alkali stop valve to close.
2. propylene oxide by chlorohydrination device exhaust processing method as claimed in claim 1, it is characterised in that as combustion air
Gas, wherein the concentration of each combustible component reaches less than the 25% of its explosible limit concentration.
3. propylene oxide by chlorohydrination device exhaust processing method as claimed in claim 2, it is characterised in that in step 4),
Piece alkali wind turbine is provided with the curved pumping equipment of band " N " type, for draining and keeps manifold pressure.
4. propylene oxide by chlorohydrination device exhaust processing method as claimed in claim 3, it is characterised in that conveyed according to gas
The requirement of process safety control, emergent evacuation valve is set in Caustic Wash Tower of Epoxy Propane drain, is set in wind turbine conveying outlet line
Quick action emergency valve is put, emergent evacuation valve is set in piece alkali equipment safety water sealed tank air inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711213873.0A CN107899402B (en) | 2017-11-28 | 2017-11-28 | Tail gas treatment method for chlorohydrination method propylene oxide device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711213873.0A CN107899402B (en) | 2017-11-28 | 2017-11-28 | Tail gas treatment method for chlorohydrination method propylene oxide device |
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| Publication Number | Publication Date |
|---|---|
| CN107899402A true CN107899402A (en) | 2018-04-13 |
| CN107899402B CN107899402B (en) | 2021-04-06 |
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| CN201711213873.0A Active CN107899402B (en) | 2017-11-28 | 2017-11-28 | Tail gas treatment method for chlorohydrination method propylene oxide device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109631056A (en) * | 2019-01-31 | 2019-04-16 | 滨化集团股份有限公司 | A kind of technique of propylene oxide chlorohydrination tail gas and trichloro ethylene house exhaust combined governance |
| CN111189055A (en) * | 2020-03-03 | 2020-05-22 | 滨化集团股份有限公司 | Dichloropropane rectifier unit discharges tail gas processing apparatus |
| CN114642950A (en) * | 2020-12-21 | 2022-06-21 | 浙江国宇塑业有限公司 | Explosion-proof equipment is used in formaldehyde production |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203349652U (en) * | 2013-06-03 | 2013-12-18 | 滨化集团股份有限公司 | Molten salt furnace control device in solid caustic soda production |
| US20160030883A1 (en) * | 2013-04-24 | 2016-02-04 | Jiangsu New Century Jiangnan Environmental Protection Co., Ltd. | Method and apparatus for treating acidic tail gas by using ammonia process flue gas |
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| CN109631056A (en) * | 2019-01-31 | 2019-04-16 | 滨化集团股份有限公司 | A kind of technique of propylene oxide chlorohydrination tail gas and trichloro ethylene house exhaust combined governance |
| CN111189055A (en) * | 2020-03-03 | 2020-05-22 | 滨化集团股份有限公司 | Dichloropropane rectifier unit discharges tail gas processing apparatus |
| CN114642950A (en) * | 2020-12-21 | 2022-06-21 | 浙江国宇塑业有限公司 | Explosion-proof equipment is used in formaldehyde production |
| CN114642950B (en) * | 2020-12-21 | 2024-03-26 | 浙江国宇塑业有限公司 | Explosion-proof equipment is used in formaldehyde production |
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