CN107913590B - Tail gas treatment device of chlorohydrination method propylene epoxide device - Google Patents
Tail gas treatment device of chlorohydrination method propylene epoxide device Download PDFInfo
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- CN107913590B CN107913590B CN201711213872.6A CN201711213872A CN107913590B CN 107913590 B CN107913590 B CN 107913590B CN 201711213872 A CN201711213872 A CN 201711213872A CN 107913590 B CN107913590 B CN 107913590B
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- 238000000034 method Methods 0.000 title claims abstract description 51
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 title claims abstract description 32
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 85
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 37
- 235000011121 sodium hydroxide Nutrition 0.000 claims abstract description 24
- 230000008569 process Effects 0.000 claims abstract description 19
- 150000003839 salts Chemical class 0.000 claims abstract description 13
- 238000005406 washing Methods 0.000 claims abstract description 10
- 230000005540 biological transmission Effects 0.000 claims abstract description 8
- 230000001105 regulatory effect Effects 0.000 claims abstract description 7
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims description 9
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims description 8
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims description 8
- 239000002253 acid Substances 0.000 claims description 7
- 239000003518 caustics Substances 0.000 claims description 5
- 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
- 239000001294 propane Substances 0.000 claims description 4
- 239000007789 gas Substances 0.000 abstract description 100
- 239000002912 waste gas Substances 0.000 abstract description 12
- 238000004880 explosion Methods 0.000 abstract description 6
- 239000000446 fuel Substances 0.000 abstract description 5
- 238000002485 combustion reaction Methods 0.000 abstract description 4
- 239000000126 substance Substances 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 7
- XENVCRGQTABGKY-ZHACJKMWSA-N chlorohydrin Chemical compound CC#CC#CC#CC#C\C=C\C(Cl)CO XENVCRGQTABGKY-ZHACJKMWSA-N 0.000 description 7
- 239000001301 oxygen Substances 0.000 description 7
- 229910052760 oxygen Inorganic materials 0.000 description 7
- 239000010815 organic waste Substances 0.000 description 6
- 238000007254 oxidation reaction Methods 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 239000003513 alkali Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000003463 adsorbent Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 150000001335 aliphatic alkanes Chemical class 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 2
- 150000001345 alkine derivatives Chemical class 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001590 oxidative effect 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
- 238000001179 sorption measurement Methods 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 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
- 230000009849 deactivation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 239000010791 domestic waste Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000543 intermediate Substances 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 239000011941 photocatalyst Substances 0.000 description 1
Images
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
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K5/00—Feeding or distributing other fuel to combustion apparatus
- F23K5/002—Gaseous fuel
Abstract
The tail gas treatment device of the chlorohydrination method propylene epoxide device comprises an alkaline washing tower, a safe water seal tank, a fan, a flake caustic soda device safe water seal tank and a molten salt furnace which are connected in sequence; the system also comprises an interlocking control system, wherein the interlocking control system comprises a VOC online gas detector, a remote transmission flowmeter, a flake caustic soda delivery cut-off valve, an emptying quick-open valve and an emptying regulating valve, wherein the VOC online gas detector, the remote transmission flowmeter and the flake caustic soda delivery cut-off valve are sequentially connected between the fan and the flake caustic soda device safety water seal tank; the VOC on-line gas detector is used for detecting the content of combustible gas in the pipeline; and the gas in the pipeline is measured by a remote flow meter and then is conveyed to a safe water seal tank of the flake caustic soda device and then enters the molten salt furnace to be used as combustion-supporting air for incineration. The process dilutes a great amount of tail gas to reach the explosion limit concentration of each component of the tail gas below 25%, and then burns the tail gas as combustion-supporting air of the incinerator, so that the process is safe to operate, can completely and effectively treat waste gas, and even can recover heat or save fuel consumption on specific combustion equipment.
Description
Technical Field
The invention provides a tail gas treatment device of a chlorohydrination method propylene oxide device, which is applied to a chemical device for generating organic waste gases such as alkane, alkene, alkyne and the like.
Background
The existing tail gas treatment technology comprises the following steps:
1. an adsorption method: the organic tail gas is mainly adsorbed by an adsorbent, such as activated carbon, and the adsorbent is replaced periodically. However, this process has an adsorbent that needs to be replenished and regenerated; the waste gas with higher temperature needs to be cooled firstly; complex exhaust gases require pretreatment.
The main disadvantages of this method are: the operation needs to be carried out under a certain pressure condition, and the concentration of oxygen in the tail gas of the chlorohydrination method propylene oxide device is higher than about 45 percent, so that if the tail gas is compressed, the tail gas has the danger of explosion. Secondly, if the desorption process is not properly selected, the problems of secondary pollution and the like exist, so that the adsorption method is not suitable for treating the tail gas of the chlorohydrin method propylene oxide device.
2. Low-temperature plasma method: the waste gas after water washing enters a low-temperature plasma equipment treatment system after moisture is removed by a demister, the gas entering the low-temperature plasma equipment is moisture-free, dust-free and particle-free, the waste gas enters the plasma equipment, odor molecules are excited under the action of high-energy electrons, chemical bonds among charged particles or molecules are broken, meanwhile, water and oxygen in the air can generate strong oxidizing substances such as OH free radicals, active oxygen and the like under the bombardment of the high-energy electrons, and the strong oxidizing substances react with organic gas molecules to be decomposed.
The main disadvantages of this method are: the reactor is easy to generate spark discharge under high peak voltage, and the organic tail gas has high oxygen content and is easy to explode for the tail gas of the propylene oxide device. And the requirements on the configuration design, the manufacturing precision, the tightness and the like of equipment parts of the low-temperature plasma equipment are high. For example, for parameters such as electric field frequency, voltage, high-frequency pulse and the like, if a certain parameter in the complete equipment cannot meet the requirement, such as low voltage, overhigh frequency, overlow frequency and the like, the generation amount of plasma can be greatly influenced, even explosion can be caused, and the low-temperature plasma technology adopted for domestic waste gas treatment is immature at present and is in a groping stage. Therefore, the technology is not suitable for tail gas treatment of a chlorohydrin method propylene oxide device.
3. Photocatalytic oxidation method: the waste gas enters the main pipeline and then is sent into a waste gas purification unit, chemical pretreatment is carried out in a concentration homogenizer, and the adopted washing liquid is an acidic washing liquid. The absorption liquid has obvious absorption and release effects on the waste gas. The absorption of the absorption liquid to the main components of the waste gas ensures the stability of the concentration of the waste gas. And the waste gas pretreated by the washing tower enters a photocatalytic oxidation reaction tower. The photochemical oxidation technology is to oxidize and degrade organic pollutants under the action of visible light or ultraviolet light, and finally to discharge the gas at high altitude through a fan and an exhaust funnel.
Disadvantages of the catalytic oxidation technique: this method uses a photocatalyst, and has a problem of catalyst deactivation; the chemical bond with high bond energy can not be opened, the oxidation efficiency is limited, and the photochemical oxidation degradation is not thorough due to the limitation of reaction conditions, so that various organic intermediates are easily generated. Therefore, the technology is not suitable for treating tail gas of a chlorohydrin method propylene oxide device.
The existing tail gas treatment process in the petrochemical industry at present can not realize effective and thorough treatment of tail gas of a chlorohydrin method propylene oxide device, and after analyzing components and properties of the tail gas of the chlorohydrin method, the invention provides a technology for burning the tail gas of the chlorohydrin method propylene oxide device as combustion-supporting air after the tail gas is diluted to safe concentration. The technology is different from the traditional tail gas incineration technology, and in oil refining and other chemical devices, the tail gas is used as fuel for incineration, if the tail gas of the chlorohydrination propylene oxide device is directly incinerated, the concentration of organic combustible substances is low and is not easy to combust, and moreover, the oxygen concentration of the tail gas of the chlorohydrination propylene oxide device is higher, so that the risk of backfire explosion exists in the incineration process. The process not only has safe operation, but also can completely and effectively treat the waste gas, and even can recover heat or save the fuel consumption on specific combustion equipment.
Disclosure of Invention
1. Technical problem to be solved
In order to solve the defects of potential safety hazard, incomplete secondary treatment and purification and the like in the prior art, the invention provides a tail gas treatment device of a chlorohydrination propylene oxide device, which solves the problem of pollution caused by the emission of organic waste gases such as alkane, alkene and alkyne in a chemical device.
2. Technical scheme
The object of the present invention is achieved mainly by the following technical means.
The tail gas treatment device of the chlorohydrination method propylene epoxide device comprises an alkaline washing tower, a safe water seal tank, a fan, a flake caustic soda device safe water seal tank and a molten salt furnace which are connected in sequence; the method is characterized in that: the system also comprises an interlocking control system, wherein the interlocking control system comprises a VOC online gas detector, a remote transmission flowmeter, a flake caustic soda delivery cut-off valve, an emptying quick-open valve and an emptying regulating valve, wherein the VOC online gas detector, the remote transmission flowmeter and the flake caustic soda delivery cut-off valve are sequentially connected between the fan and the flake caustic soda device safety water seal tank; the VOC on-line gas detector is used for detecting the content of combustible gas in the pipeline; and the gas in the pipeline is measured by a remote flow meter and then is conveyed to a safe water seal tank of the flake caustic soda device, and then enters the molten salt furnace to be used as combustion-supporting air for incineration.
Further, the alkaline tower is used for removing acid gases in chlorohydrination tail gas of the propylene oxide unit.
Furthermore, the safe water seal tank is provided with a supplementary air inlet, and the tail gas from which the acid gas is removed is mixed with supplementary air in the safe water seal tank and then enters the fan.
Furthermore, a caustic soda flake fan is arranged between the safe water seal tank of the caustic soda flake device and the molten salt furnace, and a drainage pipe of the caustic soda flake fan is provided with an N-shaped bent drainage facility for draining water and keeping the pressure in the pipeline.
Furthermore, according to the requirements of safety control in the gas conveying process, an emergency emptying valve is arranged at a vent of the alkaline tower, an emergency cut-off valve is arranged at a pipeline of a fan conveying outlet, and the emergency emptying valve is arranged at an air inlet of a safety water seal tank of the caustic soda flake device.
Further, the content of the combustible gas detected by the VOC on-line gas detector is the total concentration of propylene and propane; the interlocking control system also detects the K value of the ratio of chlorine to propylene in the tail gas, the flow of the fan and the working state of the fan; and the interlocking control system realizes interlocking control through the detected parameters.
3. Has the advantages that:
compared with the prior art, the tail gas treatment device for the chlorohydrination method propylene oxide device has the beneficial effects that:
1) the traditional tail gas incineration process is generally applied to oil refining devices and chemical devices with higher tail gas concentration, the devices are generally provided with combustion furnaces or torches, the tail gas is used as fuel to be directly combusted, and the traditional incineration process technology cannot be used for the tail gas with the very low oxygen content of the organic matter concentration of the chlorohydrination propylene oxide device. Firstly, the tail gas concentration of a chlorohydrination method propylene oxide device is very low, and the combustion is very unstable or can not be ignited; and secondly, even if the organic waste gas is combusted by a method of adding other fuels, because the concentration of oxygen in tail gas is very high, the tail gas has the risk of backfire explosion, and the two characteristics determine that the organic waste gas in the chlorohydrination method cannot be combusted by using the traditional incineration process.
Therefore, the scheme of the invention carries out mass air dilution on the waste gas of the chlorohydrination method propylene oxide device, dilutes the concentration of the main organic combustible to be below 25 percent of the lower explosion limit of organic matters in the air, meets the safety requirement of the national environmental protection standard of the people's republic of China (air pollution control engineering technical guide)' HJ2000-20106.4.5, and then carries out incineration treatment as the combustion-supporting air of the incinerator. The tail gas composed of similar components in other petrochemical devices can be thoroughly treated, and the organic waste gas is thoroughly treated by burning without secondary pollution.
2) The invention is characterized in that the tail gas incineration treatment process is different from the traditional incineration process, and the operation of the process is more economic and safer.
Drawings
FIG. 1 is a flow chart of an apparatus for the production method of the present invention.
In the figure: 1-an alkaline washing tower, 2-a safe water seal tank, 3-a fan, 4-a sheet caustic soda device safe water seal tank, 5-a sheet caustic soda fan, 6-a molten salt furnace, 7-a VOC on-line gas detector, 8-a remote flow meter, 9-a sheet caustic soda delivery cut-off valve, 10-an emptying quick-opening valve, 11-an emptying adjusting valve, 12-a secondary caustic soda tank, 13-an N-shaped bend and 14-clean water.
Detailed Description
Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings, and it will be apparent to those skilled in the art from this detailed description that the present invention can be practiced. Features from different embodiments may be combined to yield new embodiments, or certain features may be substituted for certain embodiments to yield yet further preferred embodiments, without departing from the principles of the present invention.
FIG. 1 illustrates a chlorohydrin process propylene oxide plant tail gas treatment unit constructed in accordance with a preferred embodiment of the present invention. As shown in fig. 1, the tail gas treatment device of the chlorohydrination method propylene oxide device comprises an alkaline washing tower 1, a safe water seal tank 2, a fan 3, a safe water seal tank 4 of a flake caustic soda device and a molten salt furnace 6 which are connected in sequence; wherein, the alkaline tower 1 is used for removing acid gas in chlorohydrination tail gas of the propylene oxide device; the safe water seal tank 2 is provided with a supplementary air inlet, and the tail gas after acid gas removal is mixed with supplementary air in the safe water seal tank and then enters the fan 3; the outlet pipeline of the fan is provided with a VOC on-line gas detector 7 for detecting the content of combustible gas in the pipeline; the outlet pipeline of the fan 3 is also provided with a remote transmission flowmeter 8, and gas in the pipeline is metered by the remote transmission flowmeter 8 and then is conveyed to the safe water seal tank 4 of the flake caustic soda device, and then enters the molten salt furnace 6 to be used as combustion-supporting air for incineration. A caustic soda flake fan 5 is arranged between a safety water seal tank 4 of a caustic soda flake device and a molten salt furnace 6, and a drainage facility with an N-shaped bend 13 is arranged at a drainage pipe of the caustic soda flake fan and used for draining water and keeping the pressure in the pipeline.
The tail gas of the chlorohydrination method propylene oxide device comprises the following components:
the tail gas treatment device of the chlorohydrination method propylene oxide device is used for removing tail gas, and comprises the following steps:
acid gas in chlorohydrination tail gas of a propylene oxide device is removed through an alkaline washing tower 1, the chlorohydrination tail gas is introduced into a safe water-sealed tank 2, the water-sealed tank 2 is provided with an air inlet, chlorohydrination organic waste gas and supplementary air are mixed and then enter a fan 3, gas in an outlet pipeline of the fan is detected for combustible gas content through a VOC online gas detector 7, then the combustible gas is measured through a remote flow meter 8 and then conveyed to a safe water-sealed tank 4 of a caustic soda flake device, and then the combustible gas enters a molten salt furnace 6 through a caustic flake fan 5 to be burnt as combustion-supporting air. As the gas passes through the safety water seal, the water content in the gas is higher, and in the gas conveying process, a drainage facility with an N-shaped bend 13 is designed at the low point of the pipeline of the flake caustic soda fan, so that the water can be drained and the pressure in the pipeline can be kept. According to the requirements of safety control in the gas conveying process, an emergency emptying valve is arranged at a vent of the propylene oxide caustic tower, an emergency cut-off valve is arranged at a pipeline of a fan conveying outlet, and the emergency emptying valve is arranged at an air inlet of a water seal tank of a caustic soda flake device.
In order to realize the safe treatment of chlorohydrination tail gas, the tail gas treatment device is provided with the following interlocking control system:
a VOC online gas detector 7, a remote flow meter 8 and a flake caustic soda delivery cut-off valve 9 are sequentially connected between the fan 3 and the flake caustic soda device safety water seal tank 4, and an emptying quick-open valve 10 and an emptying regulating valve 11 are connected above the caustic tower 1. The VOC on-line gas detector 7 detects the total concentration of propylene and propane in the tail gas; the interlocking control system also detects the K value of the ratio of chlorine to propylene in the tail gas, the flow of the fan and the working state of the fan; the interlock control system realizes interlock control through the detected parameters, and the specific control is as follows:
(1) the VOC on-line gas detector detects that the total gas concentration of propylene (C3H6) and propane (C3H8) is more than 0.5 percent, the interlocking result is that the emptying adjusting valve 11 and the emptying quick-opening valve 10 are opened simultaneously, the fan 3 is stopped in a linked tripping mode, and the sheet-feeding alkali cut-off valve 9 is closed.
(2) The ratio K value is more than 0.6200, the interlocking result is that the emptying regulating valve 11 and the emptying quick-opening valve 10 are opened at the same time, the fan 3 is stopped in a chain jumping mode, and the flake-feeding alkali cut-off valve 9 is closed; the K value is the ratio of chlorine to propylene in the organic tail gas.
(3) The flow of the fan is less than 5000m3And h, the interlocking result is that the emptying regulating valve 11 and the emptying quick-opening valve 10 are opened at the same time, the fan 3 is stopped in a linked mode, and the flake feeding alkali cut-off valve 9 is closed.
(4) The fan stops running suddenly, and the interlocking result is that the emptying regulating valve 11 and the emptying quick-opening valve 10 are opened at the same time, and the tablet-feeding alkali cut-off valve 9 is closed.
Although the present invention has been described above with reference to specific embodiments, it will be appreciated by those skilled in the art that many modifications are possible in the arrangement and details of the invention disclosed within the principle and scope of the invention. The scope of the invention is to be determined by the appended claims, and all changes that come within the meaning and range of equivalency of the technical features are intended to be embraced therein.
Claims (4)
1. The tail gas treatment device of the chlorohydrination propylene epoxide device comprises an alkaline washing tower, a safe water-sealed tank, a fan, a flake caustic soda device safe water-sealed tank and a molten salt furnace which are connected in sequence; the method is characterized in that: the system also comprises an interlocking control system, wherein the interlocking control system comprises a VOC online gas detector, a remote transmission flowmeter, a flake caustic soda delivery cut-off valve, an emptying quick-open valve and an emptying regulating valve, wherein the VOC online gas detector, the remote transmission flowmeter and the flake caustic soda delivery cut-off valve are sequentially connected between the fan and the flake caustic soda device safety water seal tank; the VOC on-line gas detector is used for detecting the content of combustible gas in a pipeline; the gas in the pipeline is measured by a remote flow meter and then is conveyed to a safe water seal tank of the flake caustic soda device, and then enters a molten salt furnace to be used as combustion-supporting air for incineration;
the content of combustible gas detected by the VOC on-line gas detector is the total concentration of propylene and propane; the interlocking control system also detects the K value of the ratio of chlorine to propylene in the tail gas, the flow of the fan and the working state of the fan; the interlock control system realizes interlock control through the detected parameters;
the safety water seal tank is provided with a supplementary air inlet, and tail gas with acid gas removed enters the fan together after being mixed with supplementary air in the safety water seal tank.
2. The tail gas treatment device for the chlorohydrination method of propylene oxide unit according to claim 1, wherein the caustic wash tower is used for removing acid gas in chlorohydrination tail gas of the propylene oxide unit.
3. The tail gas treatment device for the chlorohydrination method propylene oxide device of claim 2, wherein a caustic soda flake blower is arranged between the safe water seal tank of the caustic soda flake device and the molten salt furnace, and a drainage pipe of the caustic soda flake blower is provided with an N-shaped bent drainage facility for draining water and keeping pressure in the pipeline.
4. The tail gas treatment device for the chlorohydrination process of propylene oxide plant according to claim 3, wherein an emergency emptying valve is arranged at the vent of the caustic tower, an emergency cut-off valve is arranged at the pipeline of the fan delivery outlet, and an emergency emptying valve is arranged at the gas inlet of the safety water seal tank of the caustic soda flake device according to the requirements of the safety control of the gas delivery process.
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| CN201711213872.6A CN107913590B (en) | 2017-11-28 | 2017-11-28 | Tail gas treatment device of chlorohydrination method propylene epoxide device |
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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 |
| CN113357541B (en) * | 2020-03-03 | 2023-04-14 | 中国石油化工股份有限公司 | Liquid storage tank tail gas treatment system and method |
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| 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 |
| CN106362547A (en) * | 2015-07-23 | 2017-02-01 | 中国石油化工股份有限公司 | Sulfur-containing organic waste gas treatment method and sulfur-containing organic waste gas treatment apparatus |
| CN206535389U (en) * | 2017-02-14 | 2017-10-03 | 福建湄洲湾氯碱工业有限公司 | A kind of processing system of chlorohydrination method tail gas |
| CN207610220U (en) * | 2017-11-28 | 2018-07-13 | 滨化集团股份有限公司 | Propylene oxide by chlorohydrination device exhaust processing unit |
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