CN114425214B - Equipment for collecting and conveying VOCs loading gas and method for safely collecting and conveying VOCs gas - Google Patents
Equipment for collecting and conveying VOCs loading gas and method for safely collecting and conveying VOCs gas Download PDFInfo
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- CN114425214B CN114425214B CN202011036988.9A CN202011036988A CN114425214B CN 114425214 B CN114425214 B CN 114425214B CN 202011036988 A CN202011036988 A CN 202011036988A CN 114425214 B CN114425214 B CN 114425214B
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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
- B01D53/002—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 condensation
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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
- B01D53/30—Controlling by gas-analysis apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
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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
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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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- 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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- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Treating Waste Gases (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses equipment for collecting and conveying VOCs loading gas and a method for safely collecting and conveying the VOCs gas, wherein the equipment comprises a condensing device, a mixing device, a protective gas supply device, a gas detection device, an air draft device, a gas collection pipeline and an air release valve; the condensing device, the mixing device, the detecting device and the air draft device are sequentially connected in series on the gas collecting pipeline, the air release valve is arranged at the output end of the gas collecting pipeline, and the protective gas supply device is connected with the mixing device through a pipeline. The equipment can be used for hermetically collecting VOCs exhausted by the tank wagon in the organic liquid loading process, monitoring the gas composition, reducing the concentration of organic matters by condensation and diluting the concentration of oxygen by mixing inert gas, controlling the concentration of the mixed gas within the lower limit of gas explosion by using DCS (or PLC), safely conveying the gas to the waste gas treatment device, and ensuring safe conveying and treatment.
Description
Technical Field
The invention relates to equipment for collecting and conveying VOCs loading gas, and also relates to a method for safely collecting and conveying VOCs by utilizing the equipment for collecting and conveying the VOCs loading gas, belonging to the technical field of emission reduction in chemical industry or petrochemical industry.
Background
Volatile organic compounds (Volatic Organic Compounds, VOCs for short) refer to organic compounds with boiling points between 50 and 260 ℃ under normal pressure, and after the volatile organic chemical products are produced from manufacturers, the volatile organic chemical products are required to be transported to application places, usually automobiles or train tank trucks for transportation, and VOCs gas is inevitably generated in the tank truck loading process.
VOCs gas generated in the loading process of the volatile organic compound tank car has the following characteristics: the organic matter concentration is high, the oxygen content is high, the organic matter concentration belongs to explosive mixed gas, the characteristic of double high determines the VOCs gas collecting and conveying process, the organic matter concentration is high, and particularly the terminal treatment process is a thermal destruction process technology.
At present, the VOCs terminal treatment process is divided into a recovery technology and a destruction technology, wherein the recovery technology comprises absorption, adsorption, condensation and membrane separation; destruction techniques include thermal destruction, photocatalysis, plasma, and biodegradation. The recycling technology cannot reach national emission standards at present, and a destroying technology is also needed, wherein the most safe and reliable destroying technology is a thermal destroying method, such as TO, RTO, CO, RCO.
Because the end treatment of VOCs generated in the loading process of the volatile organic compounds tank car is particularly dangerous, most of the loading gas is not collected and treated at present, and is directly discharged, a large amount of atmospheric photochemical reaction can be generated.
At present, a large amount of VOCs gas collection patents and documents are VOC collection treatment of various industries, such as CN106182281A is VOC collection treatment of wood processing industry. Chaobing et al, paper "analysis of volatile organic compounds management technology for aromatic hydrocarbon tank fields" focused on tank field VOC collection.
The current patents and literature relating to this area are almost blank because of the particular hazards associated with the collection and disposal of VOCs generated during loading of the volatile organic compounds in tank cars.
Disclosure of Invention
Aiming at the defect that the Volatile Organic Compounds (VOCs) generated in the loading process of the tank truck have high risk coefficient in the prior art and the prior art has no good treatment method, the first aim of the invention is to provide equipment for safely collecting and conveying the loaded VOCs, which can safely collect and convey the VOCs generated in the loading process without emission, is not only beneficial to the standard reaching of the VOCs of enterprises, but also can realize safe production.
A second object of the present invention is to provide a method for safely collecting and transporting VOCs using a device for collecting and transporting VOCs loading gas, which is advantageous for the terminal thermal destruction treatment of VOCs by detecting and analyzing VOCs and realizing rapid regulation of gas composition adjustment so that the oxygen content and the organic concentration in the VOCs gas reach the safety transportation standards.
In order to achieve the technical purpose, the invention provides equipment for collecting and conveying VOCs loading gas, which comprises a condensing device, a mixing device, a protective gas supply device, a gas detection device, an exhaust device and a gas collection pipeline;
one end of the gas collecting pipeline is a tank wagon connecting end, the other end of the gas collecting pipeline is a gas output end, and a condensing device, a mixing device, a detecting device and an air extracting device are sequentially arranged on the gas collecting pipeline in series from the tank wagon connecting end to the gas output end;
the protective gas supply device is connected with the mixing device through a pipeline;
and a gas output end of the gas collecting pipeline is provided with a vent valve.
As a preferable scheme, the condensing device comprises a condenser and a condensate collecting tank, and the condensate collecting tank is arranged at the bottom of the condenser. The condensing device is arranged to realize condensation recovery of high-boiling-point organic matters, so that the concentration of the organic matters in the VOCs loading gas can be reduced, and part of the organic matters can be recycled.
As a preferred embodiment, the condenser is a chilled water condenser. The freezing medium used in the chilled water condenser is typically tap water, a brine solution, or an aqueous solution containing an antifreeze, etc., which are well known in the industry. The chilled water condenser is made of carbon steel, stainless steel or graphite.
As a preferable scheme, the condensate collecting tank is a gas seal collecting tank and is connected with the protective gas supply device through a pipeline. The collecting tank is made of carbon steel, stainless steel or glass fiber reinforced plastic.
As a preferred embodiment, the mixer is of SV type, SX type, SL type, SH type or SK type. Further preferred is the SV type or SK type.
As a preferred embodiment, the gas detection device comprises an oxygen analyzer and/or an LEL detector. The oxygen analyzer is preferably a laser oxygen analyzer, a zirconia oxygen analyzer or a magnetic oxygen analyzer, and more preferably a laser oxygen analyzer. The LEL detector is an FID, PID or infrared analyzer, more preferably an FID. The oxygen analyzer and the LEL detector are arranged in a single mode, a two-in-one mode or a three-in-two mode. As a further preferred form of installation is two-out-of-three. Still more preferably, the mounting is in situ.
As a preferable scheme, the gas collecting pipeline is provided with detonation type flame arresters at the front end and the rear end of the air draft device. The detonation type flame arrester is in accordance with ISO16852 or GB/T13347 detonation type flame arrester. When the fan breaks down in the operation process, mechanical parts fall off to collide, which is equivalent to an ignition source, and the transported explosive gas can be detonated, so that the explosion of the upper and lower streams is prevented due to interlocking reaction caused by the explosion, detonation flame arresters are arranged in front of and behind the fan, and the explosion is prevented from diffusing to the upper and lower streams.
As a preferred solution, the line distance between the vent valve and the gas detection device is more than 10 meters, preferably more than 30m, and most preferably 40-60 m. Because the gas detection needs time, the control system takes time to feed back, the action of the vent valve needs about 10S, if the distance is too short, the explosive gas can run to the VOC processing device in the time, explosion is caused, and potential safety hazards exist.
As a preferred solution, the tank car connection end and the gas output end of the gas collecting pipeline are both provided with valves.
As a preferable scheme, the air extracting device is a fan, and is usually a centrifugal fan or a Roots blower. The fan is made of carbon steel, stainless steel or glass fiber reinforced plastic. And the intrinsic safety type fan is further preferred, so that the safety of the conveying process is ensured.
The invention provides a method for safely collecting and conveying VOCs (volatile organic compounds) gas by using equipment for collecting and conveying the VOCs loading gas, which comprises the following steps:
1) Checking and determining that each valve on the gas collecting pipeline is closed, and connecting the tank wagon connecting end of the gas collecting pipeline with the tank wagon exhaust port;
2) Opening a valve, an emptying valve and an air draft device at the connecting end of the tank wagon on the gas collecting pipeline, simultaneously opening a protective gas supply device, enabling VOCs gas in the tank wagon to enter a condenser of the condensing device through the gas collecting pipeline under the air draft effect of the air draft device, enabling high-boiling-point gas to enter a condensate collecting tank after condensation, and enabling low-boiling-point gas to enter the mixing device;
3) The low boiling point gas is evenly mixed with the protective gas sent by the protective gas supply device in the mixing device and then is detected by the gas detection device;
4) When the oxygen content or VOCs gas concentration in the mixed gas reaches the conveying condition, the emptying valve is closed, and the gas output end valve on the gas collecting pipeline is opened to convey the gas.
As a preferable scheme, the VOCs gas is an organic matter with the real vapor pressure of more than or equal to 5.2kPa at normal temperature.
As a preferred embodiment, VOCs gas enters the condensing unit through the gas collecting pipe at a flow rate of 1-20 m/s.
As a preferable scheme, the cooling temperature of the condensing device ranges from-18 ℃ to 5 ℃.
As a preferred embodiment, the oxygen content of the mixed gas is less than 60% of the limiting oxygen concentration or the organic gas concentration is less than 25% of the LEL.
As a preferable scheme, the protective gas is at least one of nitrogen, argon and carbon dioxide. Further preferably nitrogen.
The invention provides a method for safely collecting and conveying VOCs (volatile organic compounds) gas by using equipment for collecting and conveying the VOCs loading gas, which comprises the following specific steps:
step one: pipe connection
Before the loading process of the volatile organic liquid, connecting a gas collecting pipeline to be loaded with the tank wagon exhaust port, checking whether valves on other gas collecting pipelines are closed, and connecting the gas collecting pipeline to be loaded with the volatile organic liquid.
Step two: gas collection
Starting the organic liquid loading, simultaneously starting a fan of a gas collecting pipeline, enabling VOCs gas in the tank car to enter a chilled water condenser from the collecting pipeline at a flow speed of 1-20 m/s under the action of the fan and liquid extrusion in the tank car, enabling partial gas to be condensed and enter a condensate collecting tank, and enabling uncondensed gas to enter a mixing device;
step three: detection of
And when the fan is started, a valve and a gas emptying valve on a pipeline between the protective gas supply device and the mixing device are opened, the pressure (gauge pressure) is controlled to be 1-25 KPa, and the gas discharged from the chilled water condenser and the protective gas such as nitrogen are uniformly mixed in the mixer and detected by an oxygen analyzer and/or an LEL detector.
Step four: gas delivery
And (3) using DCS (or PLC) interlocking control, when the mixed gas reaches a conveying condition, closing an organic gas emptying valve, and opening an organic gas conveying valve TO enable the organic gas TO enter a post-treatment process (TO, RTO and the like).
Compared with the prior art, the technical scheme of the invention has the beneficial effects that:
aiming at the problems of high concentration of organic matters and high oxygen content in the collection and transportation process of VOCs gas generated in the loading process of volatile organic matters, the technical scheme of the invention provides equipment for collecting and transporting the VOCs loading gas, which realizes the integrated operation of VOCs gas sealing collection, condensation, gas detection and inert gas mixing, can not only detect the composition of the VOCs gas, but also can quickly and effectively reduce the oxygen content and the concentration of the organic matters in the VOCs gas, thereby safely and efficiently collecting and transporting the VOCs gas generated in the loading process of the volatile organic matters and creating conditions for the thermal destruction treatment of the tail ends of the VOCs.
At present, the loading quantity of the domestic volatile organic compounds is more than tens of thousands of tons, and if the equipment for collecting and conveying the VOCs loading gas is adopted to collect and convey the VOCs loading gas, the emission of the VOCs can be reduced by tens of thousands of cubic meters, and meanwhile, conditions are created for safe production.
Drawings
FIG. 1 is a schematic diagram of an apparatus for VOCs loading gas collection and transport;
wherein, 1 is the loading pump, 2 is the tank wagon, 3 is the valve, 4 is the gas collecting pipeline, 5 is the condenser, 6 is the condensate collecting tank, 7 is protective gas supply unit, 8 is mixing arrangement, 9 is gas detection device, 10 is detonation flame arrester, 11 is updraft ventilator, 12 is the relief valve, 13 is the valve, 14 is TO incinerator.
Detailed Description
The following examples are intended to further illustrate the present invention in conjunction with the drawings of the specification, and are not intended to limit the scope of the claims.
The invention relates to equipment for collecting and conveying VOCs loading gas, which is particularly shown in figure 1. The apparatus body includes a condensing device, a mixing device 8, a protective gas supply device 7, a gas detection device 9, an air draft device 11, and a gas collecting pipe 4. One end of the gas collecting pipeline is a tank wagon connecting end, a port is provided with a valve 3 for controlling the communication with the tank wagon, and the connecting end is connected with the tank wagon 2; the other end of the gas collecting pipeline is a gas output end, the gas output end is provided with a valve 13 for controlling VOCs gas TO be output TO the TO incinerator, and the connecting end is connected with the TO incinerator 14. The condensing device, the mixing device, the detecting device and the air draft device are sequentially connected in series from the tank wagon connecting end to the gas output end on the gas collecting pipeline, and an air release valve 12 is arranged at a port close to the gas output end. The protective gas supply device is connected to the mixing device via a further line, and a valve 15 for controlling the supply of protective gas is provided in the connecting line. The condensing device comprises a condenser 5 and a condensate collecting tank 6, wherein the condensate collecting tank is arranged at the bottom of the condenser, the condenser is a conventional chilled water condenser, the condensate collecting tank is a gas seal collecting tank, the top of the gas seal collecting tank is connected with a protective gas supply device through a pipeline, and a valve is arranged on the pipeline to control protective gas to be conveyed into the gas seal collecting tank. The gas detection device mainly comprises an oxygen analyzer and an LEL detector, the oxygen analyzer and the LEL detector are selected to be installed according to the requirement, and the installation quantity can be limited according to the requirement. The air draft device is mainly a fan, and detonation flame arresters 10 are arranged in front of and behind the fan. The vent valve is arranged at a port close to the gas output end, and the safety distance between the vent valve and the gas detection device is 10-60 m. The gas detection device and the exhaust valve are controlled by DCS (or PLC) interlocking, and when the gas composition meets the incineration safety requirement, the automatic closing of the exhaust valve is controlled.
Example 1
In the loading process of 3-chloropropene, a gas collecting pipeline is connected with an exhaust port of a 3-chloropropene tank car, 3-chloropropene loading is started, a fan of the gas collecting pipeline is started, VOCs gas in the tank car enters a 0 ℃ chilled water condenser from the collecting pipeline at the flow rate of 3m/s, partial gas is condensed and enters a nitrogen-sealed glass fiber reinforced plastic collecting tank, a nitrogen gas valve and a gas emptying valve are opened while the fan is started, the pipeline distance between the gas emptying valve and an oxygen analyzer is 40 m, the pressure (gauge pressure) is controlled to be 1.5KPa, the flow rate of nitrogen is controlled, uncondensed loading gas and nitrogen are uniformly mixed in a mixer, and the mixture is detected by a three-choice dioxygen analyzer, and the oxygen analyzer is an in-situ laser oxygen analyzer. When the oxygen content of the mixed gas is less than 4%, the organic gas emptying valve is closed, the organic gas conveying valve is opened, and the organic gas enters the TO incinerator in the post-treatment process.
Example 2
In the loading process of MTBE, a gas collecting pipeline is connected with an MTBE tank car exhaust port, MTBE loading is started, a fan of the gas collecting pipeline is started, VOCs gas in the tank car enters a-5 ℃ chilled water condenser (brine condensation) from the collecting pipeline at the flow rate of 5m/s, partial gas condensation enters a stainless steel collecting tank, a nitrogen gas valve and a gas vent valve are opened while the fan is started, the pipeline distance between the gas vent valve and an oxygen analyzer is 50 meters, the pressure (gauge pressure) is controlled to be 1.5KPa, the flow rate of nitrogen is controlled, uncondensed loading gas and nitrogen are uniformly mixed in a mixer, and the mixture is detected by a three-way dioxygen analyzer, wherein the oxygen analyzer is an in-situ laser oxygen analyzer. When the oxygen content of the mixed gas is less than 3%, the organic gas emptying valve is closed, the organic gas conveying valve is opened, and the organic gas enters the TO incinerator in the post-treatment process.
Example 3
In the loading process of gasoline, a gas collecting pipeline is connected with an exhaust port of a gasoline tank car, the loading of gasoline is started, a fan of the gas collecting pipeline is started, VOCs gas in the tank car enters a chilled water condenser (brine condensation) at the temperature of minus 5 ℃ from the collecting pipeline at the flow rate of 6m/s, partial gas is condensed and enters a stainless steel collecting tank, a nitrogen gas valve and a gas vent valve are opened while the fan is started, the pipeline distance between the gas vent valve and an oxygen analyzer is 50 m, the pressure (gauge pressure) is controlled to be 1.5KPa, the flow rate of nitrogen is controlled, uncondensed loading gas and nitrogen are uniformly mixed in a mixer, and the mixture is detected by a three-way dioxygen analyzer, and the oxygen analyzer is an in-situ laser oxygen analyzer. When the oxygen content of the mixed gas is less than 2%, the organic gas emptying valve is closed, the organic gas conveying valve is opened, and the organic gas enters the TO incinerator in the post-treatment process.
Example 4
In the loading process of diesel oil, a gas collecting pipeline is connected with an exhaust port of a diesel tank car, gasoline loading is started, a fan of the gas collecting pipeline is started, VOCs gas in the tank car enters a 0 ℃ chilled water condenser from the collecting pipeline at a flow speed of 3m/s, partial gas is condensed and enters a stainless steel collecting tank, a nitrogen gas valve and a gas vent valve are opened when the fan is started, the pipeline distance between the gas vent valve and an oxygen analyzer is 50 meters, the pressure (gauge pressure) is controlled to be 1.5KPa, the flow rate of nitrogen is controlled, uncondensed loading gas and nitrogen are uniformly mixed in a mixer, and the mixture is detected by a three-way dioxygen analyzer, and the oxygen analyzer is an in-situ laser oxygen analyzer. When the oxygen content of the mixed gas is less than 5%, the organic gas emptying valve is closed, the organic gas conveying valve is opened, and the organic gas enters the TO incinerator in the post-treatment process.
Example 5
In the loading process of epoxy chloropropane, a gas collecting pipeline is connected with an exhaust port of an epoxy chloropropane tank car, epoxy chloropropane loading is started, a fan of the gas collecting pipeline is started, VOCs gas in the tank car enters a chilled water condenser (saline water condensation) at the temperature of minus 5 ℃ from the collecting pipeline at the flow rate of 8m/s, partial gas is condensed and enters a stainless steel collecting tank, a nitrogen gas valve and a gas vent valve are opened while the fan is started, the pipeline distance between the gas vent valve and an oxygen analyzer is 55 m, the pressure (gauge pressure) is controlled to be 1.5KPa, the flow rate of nitrogen is controlled, uncondensed loading gas and nitrogen are uniformly mixed in a mixer, and are detected by a three-choice two-LEL detector, and the LEL detector is an in-situ LEL detector. When the mixed gas reaches below LEL25%, the organic gas emptying valve is closed, the organic gas conveying valve is opened, and the organic gas enters the TO incinerator in the post-treatment process.
Claims (8)
1. A method for safely collecting and delivering VOCs gas by a device for collecting and delivering VOCs loading gas, comprising the steps of:
the device comprises a condensing device, a mixing device, a protective gas supply device, a gas detection device, an exhaust device and a gas collection pipeline;
one end of the gas collecting pipeline is a tank wagon connecting end, the other end of the gas collecting pipeline is a gas output end, and a condensing device, a mixing device, a gas detecting device and an air extracting device are sequentially arranged on the gas collecting pipeline in series from the tank wagon connecting end to the gas output end;
the protective gas supply device is connected with the mixing device through a pipeline;
an air vent valve is arranged at a position, close to the port, of the gas output end of the gas collecting pipeline;
the detonation flame arresters are arranged at the front end and the rear end of the air exhausting device;
the pipeline distance between the emptying valve and the gas detection device is 40-60 m;
the method for safely collecting and conveying VOCs gas comprises the following steps:
1) Checking and determining that each valve on the gas collecting pipeline is closed, and connecting the tank wagon connecting end of the gas collecting pipeline with the tank wagon exhaust port;
2) Opening a valve, an emptying valve and an air draft device at the connecting end of the tank wagon on the gas collecting pipeline, simultaneously opening a protective gas supply device, enabling VOCs gas in the tank wagon to enter a condenser of the condensing device through the gas collecting pipeline under the air draft effect of the air draft device, enabling high-boiling-point gas to enter a condensate collecting tank after condensation, and enabling low-boiling-point gas to enter the mixing device; the VOCs gas is an organic matter with the real vapor pressure of more than or equal to 5.2kPa at normal temperature; VOCs gas enters a condensing device through a gas collecting pipeline at a flow speed of 1-20 m/s; the cooling temperature range of the condensing device is-18 ℃ to 5 ℃;
3) The low boiling point gas is evenly mixed with the protective gas sent by the protective gas supply device in the mixing device and then is detected by the gas detection device;
4) When the oxygen content or VOCs gas concentration in the mixed gas reaches a conveying condition, closing an emptying valve, and opening a gas output end valve on a gas collecting pipeline to convey gas; the oxygen content in the mixed gas is lower than 60% of the limiting oxygen concentration or the concentration of the organic gas is lower than 25% of LEL.
2. A method for safely collecting and transporting VOCs gas in an apparatus for collecting and transporting VOCs loading gas according to claim 1, wherein: the protective gas is at least one of nitrogen, argon and carbon dioxide.
3. A method for safely collecting and transporting VOCs gas in an apparatus for collecting and transporting VOCs loading gas according to claim 1, wherein: the condensing device comprises a condenser and a condensate collecting tank, and the condensate collecting tank is arranged at the bottom of the condenser.
4. A method for safely collecting and transporting VOCs gas in an apparatus for collecting and transporting VOCs loading gas according to claim 3, wherein: the condenser is a chilled water condenser.
5. A method for safely collecting and transporting VOCs gas in an apparatus for collecting and transporting VOCs loading gas according to claim 3, wherein: the condensate collecting tank is an air seal collecting tank and is connected with the protective gas supply device through a pipeline.
6. A method for safely collecting and transporting VOCs gas in an apparatus for collecting and transporting VOCs loading gas according to claim 1, wherein: the mixing device is a mixer; the mixer is of SV type, SX type, SL type, SH type or SK type.
7. A method for safely collecting and transporting VOCs gas in an apparatus for collecting and transporting VOCs loading gas according to claim 1, wherein: the gas detection device comprises an oxygen analyzer and/or an LEL detector.
8. A method for safely collecting and transporting VOCs gas in an apparatus for collecting and transporting VOCs loading gas according to claim 1, wherein: the tank wagon link and the gas output of gas collection pipeline all are equipped with the valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011036988.9A CN114425214B (en) | 2020-09-28 | 2020-09-28 | Equipment for collecting and conveying VOCs loading gas and method for safely collecting and conveying VOCs gas |
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| CN208382184U (en) * | 2018-05-07 | 2019-01-15 | 上海蓝科石化环保科技股份有限公司 | A kind of VOCs waste-gas burning system |
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2020
- 2020-09-28 CN CN202011036988.9A patent/CN114425214B/en active Active
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|---|---|---|---|---|
| JP2008119570A (en) * | 2006-11-09 | 2008-05-29 | Toyoda Gosei Co Ltd | Voc recovery apparatus and voc recovery method |
| CN103111169A (en) * | 2013-03-14 | 2013-05-22 | 济钢集团有限公司 | Gas desulfurization method and automatically controlled desulfurization device |
| CN104771927A (en) * | 2015-03-23 | 2015-07-15 | 湖北吴城环保科技有限公司 | Volatile organic mixed solvent/gas recovery device |
| CN107469550A (en) * | 2017-08-22 | 2017-12-15 | 刘祖虎 | A kind of integrated condensing and the VOCs emission control systems and its processing method of absorption |
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