CN110124440B - VOCs comprehensive treatment process of coking chemical production system - Google Patents
VOCs comprehensive treatment process of coking chemical production system Download PDFInfo
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- CN110124440B CN110124440B CN201910348409.5A CN201910348409A CN110124440B CN 110124440 B CN110124440 B CN 110124440B CN 201910348409 A CN201910348409 A CN 201910348409A CN 110124440 B CN110124440 B CN 110124440B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/74—Regeneration of the filtering material or filter elements inside the filter by forces created by movement of the filter element
- B01D46/76—Regeneration of the filtering material or filter elements inside the filter by forces created by movement of the filter element involving vibrations
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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
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/02—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of cellulose-containing material
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- 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
- F23G7/07—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases in which combustion takes place in the presence of catalytic material
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- 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
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- 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
- B01D2253/106—Silica or silicates
- B01D2253/108—Zeolites
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2209/00—Specific waste
- F23G2209/14—Gaseous waste or fumes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
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- Oil, Petroleum & Natural Gas (AREA)
- Environmental & Geological Engineering (AREA)
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Abstract
The invention belongs to the technical field of atmospheric environmental pollution treatment, biological filtration and environmental pollution treatment, and particularly discloses a comprehensive treatment process for VOCs (volatile organic compounds) in a coking and chemical production system, which specifically comprises the following steps: (1) avoiding the gas leakage of the tank body: a nitrogen sealing device is arranged at the part of the coking system with the tank body to avoid the gas leakage of the tank body; (2) volatile organic waste gas treatment: the tail gas discharged by the coking system is firstly combusted through a combustion device, and then the combusted gas is adsorbed through an adsorption device. The process can effectively treat the volatile organic gas and improve the treatment efficiency of the volatile organic waste gas.
Description
Technical Field
The invention belongs to the technical field of atmospheric environmental pollution treatment, biological filtration and environmental pollution treatment, and particularly discloses a comprehensive treatment process for VOCs (volatile organic chemicals) in a coking and chemical production system.
Background
VOCs refer to volatile organic compounds/volatile organic compounds, which are important pollutants causing haze, and seriously affect the quality of the atmosphere, the growth of animals and plants, and the health of human beings. The method mainly comes from main pollutants in exhaust gas discharged by industries such as oil refining and petrifaction, chemical raw material and chemical product manufacturing, chemical drug raw material manufacturing, synthetic fiber manufacturing, surface coating, printing, shoe manufacturing, furniture manufacturing, artificial board manufacturing, electronic component manufacturing, textile printing and dyeing, plastic manufacturing, plastic products, living service industry and the like. Volatile organic compounds are classified into 8 types according to their chemical structures: alkanes, aromatic hydrocarbons, alkenes, halocarbons, esters, aldehydes, ketones, and other chemicals. Most are toxic and associated with malodour, and some are carcinogenic substances such as vinyl chloride, benzene, toluene, xylene and the like. Moreover, most volatile organic compounds are flammable and explosive, which brings many unsafe factors to enterprise production.
Coking generally refers to the process of carbonization and zooming of organic substances, in the dry distillation of coal, high-temperature dry distillation is referred to, in petroleum processing, coking is a short term for residual oil coking, and refers to the process of deep cracking and condensation reaction of heavy oil at a high temperature of about 500 ℃ to generate gas, gasoline, diesel oil, wax oil and petroleum coke. In the coking process, a large amount of VOCs are generally generated, serious pollution is generated to the atmosphere, and the treatment effect is not ideal although the VOCs generated by a coking chemical production system is treated at present. Various technical methods for treating VOCs at present comprise an ozone oxidation method, a plasma cracking method, a concentration incineration method and the like, and the methods all have the problems of incomplete treatment, large quantity, low efficiency and the like, and the cost of part of treatment methods is higher.
Disclosure of Invention
The invention aims to provide a comprehensive treatment process for VOCs in a coking and chemical production system, which can effectively treat volatile organic gases and has high treatment efficiency.
In order to achieve the above purpose, the basic scheme of the invention is as follows: a comprehensive treatment process for VOCs in a coking and chemical production system comprises the following steps:
(1) avoiding the gas leakage of the tank body: a nitrogen sealing device is arranged at the part of the coking system with the tank body to avoid the gas leakage of the tank body;
(2) volatile organic waste gas treatment: the tail gas discharged by the coking system is firstly combusted through a combustion device, and then the combusted gas is adsorbed through an adsorption device.
The working principle and the beneficial effects of the basic scheme are that: the VOCs of the coke-oven plant are mainly concentrated in partial areas such as blast condensation, washing and oil depots. The above-mentioned regions are all provided with a tank body, and when the pressure balance in the tank body is ensured, the air diffusion is required. The existing tank body can cause leakage of partial volatile organic waste gas while diffusing gas, thereby causing pollution. In the scheme, the part of the coking system, which is provided with the tank body, is provided with the nitrogen sealing device, so that the pressure balance at the tank body is ensured through the nitrogen sealing device, and the leakage of the volatile organic waste gas is avoided.
And aiming at the volatile organic waste gas finally discharged by the coking system, the volatile organic waste gas is firstly combusted through the combustion device, so that the volatile organic waste gas is combusted to generate carbon dioxide and water, and then is adsorbed through the adsorption device. In this scheme, avoided the volatile organic waste gas of cell body department in the coking system to leak promptly, combine to handle volatile organic waste gas through burning and absorbent dual mode again for volatile organic waste gas is better by the effect of administering, reduces or even has avoided volatile organic waste gas to discharge into the air, has improved treatment efficiency.
Further, the adsorption device comprises a fan, a first adsorption tower, a second adsorption tower and a condenser which are sequentially communicated. The adsorption mode can adsorb adsorbates in the air on the surface of the adsorbent, and organic matters are separated from the main body through the adsorption of the adsorbent, so that the organic waste gas can be treated. When VOCs is conveyed to the first adsorption tower under the action of the fan, the valve can be closed after the first adsorption tower is saturated in adsorption, and then VOCs gas is switched to the second adsorption tower for adsorption.
Further, activated carbon is arranged in the first adsorption tower. The active carbon has better performance, which is mainly characterized in that the active carbon has larger specific surface area, so that the active carbon has higher adsorption capacity, and VOCs can be adsorbed more greatly.
Further, a zeolite molecular sieve is arranged in the second adsorption tower. The zeolite molecular sieve has a uniform microporous structure, so that the microstructure has high selectivity, the zeolite molecular sieve has high removal efficiency in the process of adsorbing VOCs, so that the zeolite molecular sieve can achieve the effect of adsorbing VOCs, and the energy consumption and the cost of the zeolite molecular sieve are low.
Further, still be equipped with filtering mechanism between fan and the first adsorption tower, filtering mechanism can filter the VOCs before the absorption, filters solid particle, impurity etc. in the VOCs, makes VOCs adsorbed effect better.
Further, the filtering mechanism comprises a filtering pipe and a filtering screen, the filtering pipe is communicated with the adsorption device, an auxiliary pipe is arranged below the filtering pipe, a sliding groove is formed in the joint of the filtering pipe and the auxiliary pipe, a connecting plate is arranged at the lower end of the filtering screen and penetrates through the sliding groove to be connected with the filtering pipe in a sealing and sliding mode, a stop block is arranged in the filtering pipe, and the filtering screen can be abutted to the stop block. The filtering mechanism is generally only a filter screen, and the filter screen is very easily plugged by impurities in the filtering process, so that not only is the filtering effect influenced, but also the adsorption of VOCs is influenced. In this scheme, filtering mechanism includes filter tube and filter screen, and the filter screen filters impurity, and the filter screen can slide in the filter tube moreover, and when the filter screen contacted with the dog, the filter screen had a vibrations to shake the impurity after filtering the filter screen and get off, avoid producing the influence to the filter screen.
The auxiliary pipe is internally provided with an air bag, the air bag is connected with one end of a connecting plate, and a spring is arranged between the other end of the connecting plate and the side wall of the auxiliary pipe; the filtering mechanism is characterized in that a cooling mechanism is further arranged on one side of the filtering mechanism, the cooling unit comprises a vortex tube and an air supply mechanism for supplying air to the vortex tube, the vortex tube comprises a hot air port and a cold air port, a cooling tube is communicated with the cold air port, a preheating tube is communicated with the hot air port, and the preheating tube is communicated with the air bag. The air supply mechanism supplies air for the vortex tube, and generates hot air and cold air through the vortex tube, the hot air can expand the air bag, and then pushes the filter screen to slide along the sliding groove through the connecting plate, and the cold air can carry out the cold air to the filter screen, and on the other hand can blow away magazines from the filter screen, avoids blocking.
Further, a catalyst is arranged in the combustion device. The catalyst can catalyze the combustion reaction of the volatile organic waste gas, reduce the ignition point of the volatile organic waste gas and save energy.
Further, the catalyst is Pt/H-Beta. The Pt/H-Beta has good catalytic action on volatile organic compounds such as hexane, benzene, propanol and the like, can ensure that the volatile organic compounds are combusted to the maximum extent, and improves the treatment efficiency of volatile organic waste gas.
Drawings
FIG. 1 is a process flow diagram of the VOCs comprehensive treatment process of the coking chemical production system of the invention;
fig. 2 is a cross-sectional view of the filter mechanism.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the device comprises a fan 1, a filtering mechanism 2, a first adsorption tower 3, a second adsorption tower 4, a condenser 5, a filtering pipe 6, a stop dog 7, a cold air pipe 8, an auxiliary pipe 9, a spring 10, a connecting plate 11, a chute 12, an air bag 13 and a hot air pipe 14.
The embodiment is basically as shown in the attached figure 1: a comprehensive treatment process for VOCs in a coking and chemical production system comprises the following steps:
(1) avoiding the gas leakage of the tank body: a nitrogen sealing device is arranged at the part of the coking system with the tank body to avoid the gas leakage of the tank body;
(2) volatile organic waste gas treatment: the tail gas discharged by the coking system is firstly combusted through a combustion device, and then the combusted gas is adsorbed through an adsorption device.
Wherein the step (1) further comprises the following steps:
a. installing an open-close type nitrogen sealing device on a closed tank body of a coking plant, connecting a relief valve of the closed tank body into a negative pressure system, and connecting the negative pressure system with a fan of an adsorption device;
b. installing a negative pressure oxygen control device: installing a negative pressure oxygen control device in front of the fan, and setting the suction force of a front pipeline of the negative pressure oxygen control device to be 10-150 Pa;
c. adjusting pressure: setting the suction force of a front pipeline of the negative pressure oxygen control device to be 100-200Pa, setting the suction force of a dispersing opening of the tank body to be 10-50Pa, connecting the negative pressure oxygen control device to a return pipeline of the blower or a front pipeline of the blower, and adjusting the suction force of the negative pressure oxygen control device to be 10-130 Pa by an adjusting valve;
d. adsorbing volatile organic waste gas: and adsorbing the organic waste gas by an adsorption device.
The combustion device is internally provided with a catalyst. The catalyst can catalyze the combustion reaction of the volatile organic waste gas, reduce the ignition point of the volatile organic waste gas and save energy. Specifically, the catalyst is Pt/H-Beta. The Pt/H-Beta has good catalytic action on volatile organic compounds such as hexane, benzene, propanol and the like, can ensure that the volatile organic compounds are combusted to the maximum extent, and improves the treatment efficiency of volatile organic waste gas.
Wherein, adsorption equipment includes fan 1, first adsorption tower 3, second adsorption tower 4 and the condenser 5 that communicates in proper order. Activated carbon is arranged in the first adsorption tower 3. Because the performance of the activated carbon is better, the activated carbon mainly has larger specific surface area, so that the activated carbon has higher adsorption capacity, and VOCs are purified greatly. The second adsorption tower 4 is internally provided with a zeolite molecular sieve. The zeolite molecular sieve has a uniform microporous structure, so that the microstructure has stronger selectivity. They have great advantages in that they have high removal efficiency in the process of adsorbing the VOCs, and can achieve the effect of adsorbing the VOCs due to their low energy consumption.
A filtering mechanism 2 is also arranged between the fan 1 and the first adsorption tower 3. As shown in fig. 2, the filtering mechanism 2 includes a filtering pipe 6 and a filtering net, the filtering pipe 6 is communicated with the adsorption device, an auxiliary pipe 9 is arranged below the filtering pipe 6, a sliding groove 12 is arranged at the joint of the filtering pipe 6 and the auxiliary pipe 9, a connecting plate 11 is arranged at the lower end of the filtering net, the connecting plate 11 penetrates through the sliding groove 12 and is in sealing sliding connection with the filtering pipe 6, a stop block 7 is arranged in the filtering pipe 6, and the filtering net can be abutted against the stop block 7. An air bag 13 is arranged in the auxiliary pipe 9, the air bag 13 is connected with one end of a connecting plate 11, and a spring 10 is arranged between the other end of the connecting plate 11 and the side wall of the auxiliary pipe 9; the filtering mechanism 2 is characterized in that a cooling mechanism is further arranged on one side of the filtering mechanism, the cooling unit comprises a vortex tube and an air supply mechanism for supplying air to the vortex tube, the vortex tube comprises a hot air port and a cold air port, a cooling tube is communicated with the cold air port, a preheating tube is communicated with the hot air port, and the preheating tube is communicated with the air bag 13.
When the closed tank body of a coking plant is subjected to charging and discharging operation, the nitrogen sealing valve performs nitrogen supply and nitrogen discharge operation, and partial tail gas is discharged along with nitrogen gas during nitrogen discharge. The closed type groove body blow-off valve is connected into a negative pressure system, a set of negative pressure oxygen control device is installed in front of the fan 1, certain pressure is set, the tail gas discharged by the groove bodies is just sucked into the negative pressure system, and the situation that excessive oxygen is sucked into the negative pressure system when the pressure of the fan 1 changes is avoided, so that potential safety hazards are generated. When the pressure of the gas in the tank rises due to the rising of the feed liquid level or the rising of the temperature of the tank body, the nitrogen release valve is opened, and the nitrogen escapes, so that the pressure in the tank is kept balanced. The method can effectively reduce the tail gas emission in the operation process of storing the tank, and is also beneficial to improving the intrinsic safety level of the tank. In addition, nitrogen belongs to inert gas and cannot cause adverse effect on a coal gas system. Meanwhile, the nitrogen sealing treatment has little waste gas introduced into the gas system, and does not have adverse effect on the gas system pipeline.
In this scheme, set for each mouth suction of loosing according to pipeline length, bore, resistance condition, groove body installation switching formula supplies nitrogen valve, lets out nitrogen valve, adjusts fan 1 rotational speed with frequency conversion controller, and suction is adjusted with the governing valve to the each point, guarantees that gaseous can not the loss to the atmosphere in, simultaneously, can guarantee again to keep sufficient suction.
The adsorption mode can adsorb adsorbates in the air on the surface of the adsorbent, and organic matters are separated from the main body through the adsorption of the adsorbent, so that the organic waste gas can be treated. When VOCs is conveyed to the first adsorption tower 3 under the action of the fan 1, the valve can be closed after the first adsorption tower 3 is saturated in adsorption, and then VOCs gas is switched to the second adsorption tower 4 for adsorption.
In this scheme, filtering mechanism 2 includes filter tube 6 and filter screen, and the filter screen filters impurity, and the filter screen can slide in filter tube 6 moreover, and when the filter screen contacted with dog 7, the filter screen had a vibrations to shake the impurity after filtering the filter screen and get off, avoid producing the influence to the filter screen. The air supply mechanism supplies air for the vortex tube, hot air and cold air are generated through the vortex tube, the hot air can enable the air bag 13 to expand, the filter screen is pushed to slide along the sliding groove 12 through the connecting plate 11, the cold air can cool the filter screen, and magazines can be blown away from the filter screen to avoid blockage.
The foregoing is merely an example of the present invention, and common general knowledge in the field of known specific structures and characteristics is not described herein in any greater extent than that known in the art at the filing date or prior to the priority date of the application, so that those skilled in the art can now appreciate that all of the above-described techniques in this field and have the ability to apply routine experimentation before this date can be combined with one or more of the present teachings to complete and implement the present invention, and that certain typical known structures or known methods do not pose any impediments to the implementation of the present invention by those skilled in the art. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (5)
1. A comprehensive treatment process for VOCs in a coking and chemical production system is characterized by comprising the following steps: the method comprises the following steps:
(1) avoiding the gas leakage of the tank body: a nitrogen sealing device is arranged at the part of the coking system with the tank body to avoid the gas leakage of the tank body;
(2) volatile organic waste gas treatment: burning tail gas discharged by a coking system through a burning device, and adsorbing the burnt gas through an adsorption device;
the step (1) also comprises the following steps: a. installing an open-close type nitrogen sealing device on a closed tank body of a coking plant, connecting a relief valve of the closed tank body into a negative pressure system, and connecting the negative pressure system with a fan of an adsorption device; b. installing a negative pressure oxygen control device: installing a negative pressure oxygen control device in front of the fan, and setting the suction force of a front pipeline of the negative pressure oxygen control device to be 10-150 Pa; c. adjusting pressure: setting the suction force of a front pipeline of the negative pressure oxygen control device to be 100-200Pa, setting the suction force of a dispersing opening of the tank body to be 10-50Pa, connecting the negative pressure oxygen control device to a return pipeline of the blower or a front pipeline of the blower, and adjusting the suction force of the negative pressure oxygen control device to be 10-130 Pa by an adjusting valve; d. adsorbing volatile organic waste gas: adsorbing the organic waste gas by an adsorption device;
in the step (2), the adsorption device comprises a fan, a first adsorption tower, a second adsorption tower and a condenser which are sequentially communicated;
a filtering mechanism is also arranged between the fan and the first adsorption tower;
the filter mechanism comprises a filter pipe and a filter screen, the filter pipe is communicated with the adsorption device, an auxiliary pipe is arranged below the filter pipe, a sliding groove is formed in the joint of the filter pipe and the auxiliary pipe, a connecting plate is arranged at the lower end of the filter screen, the connecting plate penetrates through the sliding groove and is in sealed sliding connection with the filter pipe, a stop block is arranged in the filter pipe, and the filter screen can abut against the stop block;
the auxiliary pipe is internally provided with an air bag, the air bag is connected with one end of a connecting plate, and a spring is arranged between the other end of the connecting plate and the side wall of the auxiliary pipe; the filtering mechanism is characterized in that a cooling mechanism is further arranged on one side of the filtering mechanism, the cooling unit comprises a vortex tube and an air supply mechanism for supplying air to the vortex tube, the vortex tube comprises a hot air port and a cold air port, a cooling tube is communicated with the cold air port, a preheating tube is communicated with the hot air port, and the preheating tube is communicated with the air bag.
2. The comprehensive treatment process for VOCs in the coking and chemical production system according to claim 1, characterized in that: and activated carbon is arranged in the first adsorption tower.
3. The comprehensive treatment process for VOCs in the coking and chemical production system according to claim 2, characterized in that: and a zeolite molecular sieve is arranged in the second adsorption tower.
4. The comprehensive treatment process for VOCs in the coking and chemical production system according to claim 3, characterized in that: the combustion device is internally provided with a catalyst.
5. The comprehensive treatment process for VOCs in the coking and chemical production system according to claim 4, characterized in that: the catalyst is Pt/H-Beta.
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| CN201910348409.5A CN110124440B (en) | 2019-04-28 | 2019-04-28 | VOCs comprehensive treatment process of coking chemical production system |
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| CN201910348409.5A CN110124440B (en) | 2019-04-28 | 2019-04-28 | VOCs comprehensive treatment process of coking chemical production system |
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| CN110124440B true CN110124440B (en) | 2021-01-05 |
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| CN111298550A (en) * | 2020-02-27 | 2020-06-19 | 萍乡市华星环保工程技术有限公司 | VOCs tail gas treatment method |
| CN112082166A (en) * | 2020-08-06 | 2020-12-15 | 新疆八一钢铁股份有限公司 | Method for treating chemical tail gas |
| CN113274820A (en) * | 2021-06-02 | 2021-08-20 | 广州紫科环保科技股份有限公司 | Waste gas treatment device for sewage station of casing processing plant |
| CN116899361B (en) * | 2023-07-17 | 2024-05-03 | 江苏利锦莱德固废综合利用有限公司 | Low-cost VOC recovery system |
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| CN108722104A (en) * | 2018-08-17 | 2018-11-02 | 广东佳德环保科技有限公司 | A kind of device of efficient process uncontrollable discharge VOCs |
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| CN208047039U (en) * | 2018-05-03 | 2018-11-02 | 李涛 | One kind being used for the novel interchanger shell of CHINA RFTCOM Co Ltd |
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