CN111298597A - Novel efficient vacuum desorption system complete device and waste gas treatment method - Google Patents
Novel efficient vacuum desorption system complete device and waste gas treatment method Download PDFInfo
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- CN111298597A CN111298597A CN202010299513.2A CN202010299513A CN111298597A CN 111298597 A CN111298597 A CN 111298597A CN 202010299513 A CN202010299513 A CN 202010299513A CN 111298597 A CN111298597 A CN 111298597A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
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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
- B01D2253/106—Silica or silicates
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
- B01D2259/40088—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating
- B01D2259/4009—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating using hot gas
Abstract
The invention relates to a novel efficient vacuum desorption system complete device and a waste gas treatment method, which comprise a vacuum desorption device, an RCO catalytic combustion device, a thermal recovery desorption device and a PLC (programmable logic controller) control box, and are characterized in that the air outlet end of the vacuum desorption device is connected with the RCO catalytic combustion device through a first pipeline, the air inlet end of the vacuum desorption device is provided with the thermal recovery desorption device, the thermal recovery desorption device is connected with the ROC catalytic combustion device through a second pipeline, the PLC control box is connected with the vacuum desorption device, the RCO catalytic combustion device, the thermal recovery desorption device and the like, the vacuum desorption device comprises an analytic kettle, and the bottom of the analytic kettle is provided with a jacket oil temperature heating device. The innovative technology has the characteristics of advancement, safety, reliability, high automation degree and the like, and accords with the category of innovative technological products encouraged by the state.
Description
Technical Field
The invention relates to the technical field of environmental protection equipment, in particular to a novel high-efficiency vacuum desorption system complete device and a waste gas treatment method, and belongs to a novel VOCs waste gas desorption treatment technology and a treatment method.
Background
And the VOCs waste gas adsorption tower is internally provided with adsorbates, and waste gas enters the adsorption tower and is subjected to adsorption treatment by the adsorbates to realize standard emission of the waste gas. The current common adsorption treatment mode adopts a disposable type or a conventional desorption regeneration type. The disposable type has high operation cost and is easy to generate secondary pollution; the conventional desorption regeneration type currently adopts normal-pressure hot air desorption, steam desorption or orthotopic reduced pressure desorption. The hot air desorption is to introduce high-temperature hot air into the adsorption tower, and desorb the waste gas in the adsorbent by using hot air, so that the adsorbent is regenerated, but the hot air desorption is easy to cause fire or explosion due to higher desorption temperature. The hot air desorption temperature of not more than 120 ℃ becomes the bottleneck of the technology, and is the difficult point and pain point of the desorption of the high-boiling-point VOCS.
The high vacuum desorption technology has the characteristics of low desorption temperature, high desorption efficiency and capability of removing VOCS (volatile organic compounds) with high boiling point, but the traditional vacuum desorption system has the advantages that the adsorption tank and the desorption tank are the same tank body, each tank body is required to be a heating system, meanwhile, the sealing requirement on each pipe valve is very high, the equipment investment is high, the energy consumption waste is large, and the traditional vacuum desorption system has certain technical advancement, but the economical efficiency is poor, so that the high vacuum desorption technology cannot be widely applied and popularized.
Disclosure of Invention
In order to solve the technical problems, the invention adopts the following scheme:
the utility model provides a novel high-efficient vacuum desorption system integrated equipment, includes vacuum desorption device, RCO catalytic combustion device, thermal recovery desorption device and PLC control box, its characterized in that vacuum desorption device's the end of giving vent to anger with RCO catalytic combustion device is through first pipe connection, and the inlet end is provided with thermal recovery desorption device, thermal recovery desorption device with ROC catalytic combustion device passes through the second pipe connection, the PLC control box respectively with vacuum desorption device RCO catalytic combustion device and thermal recovery desorption device connects to control each device work, vacuum desorption device is including analytic cauldron, the bottom of analytic cauldron is provided with heating device, heating device is the oil temperature heating device that presss from both sides the cover.
The novel high-efficiency vacuum desorption system complete device is characterized in that a material inlet is formed in the top of the analysis kettle, one end of the material inlet is arranged on the analysis kettle, and a feeding device is arranged at the other end of the material inlet;
a material outlet is formed in the bottom of the analysis kettle, one end of the material outlet is arranged on the analysis kettle, and a discharging device is arranged at the other end of the material outlet;
the feeding device and the discharging device respectively adopt pneumatic conveying devices.
Novel high-efficient vacuum desorption system integrated equipment, the upper end of its characterized in that analytic cauldron is provided with the outlet pipe, the other end of outlet pipe is provided with the vacuum pump, the other end connect on the RCO catalytic combustion device, the vacuum pump with be provided with temperature sensor and vacuum gauge between the analytic cauldron, the vacuum pump with be provided with concentration sensor between the RCO catalytic combustion device.
The novel high-efficiency vacuum desorption system complete device is characterized in that a sensor is arranged in the analysis kettle, and comprises a temperature sensor and a vacuum sensor;
instrumentation is also provided, including a level gauge and a control instrument.
The novel efficient vacuum desorption system complete device is characterized in that the heating device is provided with an oiling device, and the heating device is also provided with a temperature sensor.
The novel efficient vacuum desorption system complete device is characterized in that the bottom of the analysis kettle is provided with a vent and a hot air supply interface, and the hot air supply interface is connected with a heat recovery device through a pipeline.
The novel efficient vacuum desorption system complete device is characterized in that the catalytic combustion device comprises a heat exchanger, an air inlet and an air outlet are respectively formed in two ends of the heat exchanger, the air inlet is connected with the first pipeline, the air outlet is connected with the second pipeline, a heating cover is arranged above the heat exchanger, a heating rod is arranged on the inner wall and the top of the heating cover, a catalyst is further arranged in the middle of the heating cover, and a thermocouple is arranged between the heating cover and the heat exchanger.
The novel high-efficiency vacuum desorption system complete device is characterized in that the top of the heating cover is also provided with an air leakage pipeline, and the air leakage pipeline is provided with an explosion venting valve; the combustion device is also provided with a heat preservation layer, and the heat preservation layer wraps the heat exchanger and the outer wall of the heating cover.
Novel high-efficient vacuum desorption system integrated equipment, its characterized in that: and a third pipeline is arranged on the second pipeline, one end of the third pipeline is arranged on the second pipeline, and a chimney is arranged at the other end of the third pipeline.
A novel waste gas treatment method for a complete set of high-efficiency vacuum desorption system is characterized by comprising the following steps:
s1 absorbing the saturated adsorbent molecular sieve, firstly absorbing the molecular sieve containing VOCS into a vacuum thermal desorption kettle through a pneumatic conveying feeding device;
s2, heating a heat source in the jacket through hot oil, keeping the analysis temperature in the analysis kettle at 100-150 ℃, setting the analysis air pressure at 0-98 Kpa, analyzing for 3-6h, and preheating the RCO catalytic combustion device;
s3, opening a vacuum pump, desorbing, automatically supplementing tail gas after RCO combustion into a vacuum thermal analysis kettle through a thermal recovery device according to a set program, and repeating the steps until desorption is completed;
and after S4 desorption is completed, the desorbed molecular sieve is sent back to the adsorption tank through a pneumatic conveying discharging device.
The novel efficient vacuum desorption system complete device and the waste gas treatment method thereof have the following beneficial effects:
(1) has a desorption temperature lower than the normal pressure: the normal-pressure desorption temperature is 80-120 ℃, and the invention can efficiently desorb only by the desorption temperature of 40-60 ℃.
(2) The desorption efficiency is high: the normal pressure desorption concentration is 200-500 mg/m3The desorption high concentration is 2000-5000 mg/m3。
(3) The desorption energy consumption is low: compared with normal pressure desorption, the energy is saved by 40-60%.
(4) The operation cost is low: compared with normal-pressure desorption, the method saves the operation cost by 30-40%.
(5) The safety performance is greatly improved, the vacuum desorption temperature is low, and the risk factor of combustion is prevented.
Drawings
FIG. 1: the invention discloses a structural schematic diagram of a novel high-efficiency vacuum desorption system complete device;
FIG. 2: the structure schematic diagram of the heat recovery device;
FIG. 3: the structure schematic diagram of the RCO catalytic combustion device;
description of reference numerals:
1 a feeding device; 2, a discharging device; 3 a heating device; 4 a temperature sensor; 5 a vacuum sensor; 6 an outlet pipe; 7, a resolving kettle; 8 air supply interface; 9, pneumatic conveying at an outlet; 10 a thermal power recovery desorption device; 101 an electric valve; 102 a manual valve; 103 a cold compensation valve; 11 an oiling device; 12 a vacuum gauge; 13 a vacuum pump; 14 a concentration sensor; 15RCO catalytic combustion unit; 16PLC control box; 17, a chimney; 19 heat exchanger; 20 an air inlet; 21 an air outlet; 22 a heating rod; 23 a thermocouple; 24 an insulating layer; 25 a noble metal catalyst; 26 a non-metallic catalyst; 27 explosion relief valve.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings, so that the technical solutions of the present invention can be understood and appreciated more easily.
Combine fig. 1 to fig. 3, a novel high-efficient vacuum desorption system integrated equipment, including vacuum desorption device, RCO catalytic combustion device 15, thermal recovery desorption device 10 and PLC control box 16, wherein, vacuum desorption device's the end of giving vent to anger is through first pipe connection with RCO catalytic combustion device 15, and the inlet end is provided with thermal recovery desorption device 10, and thermal recovery desorption device 10 passes through the second pipe connection with ROC catalytic combustion device 15. And a third pipeline is arranged on the second pipeline, one end of the third pipeline is arranged on the second pipeline, and a chimney 17 is arranged at the other end of the third pipeline. The PLC control box is connected with the vacuum desorption device, the RCO catalytic combustion device, the heat recovery desorption device and the like so as to control the work of each device.
Vacuum desorption device includes vacuum thermal analysis cauldron 7, including analysis cauldron 7 main part, and the top of analysis cauldron main part is provided with the material import, and the one end and the analysis cauldron main part of material import are connected, and the other end is provided with feed arrangement 1. The bottom of the resolution kettle is provided with a material outlet, and the material outlet is provided with a discharging device 2. The feeding device 1 adopts a pneumatic conveying device which is conventional equipment, the handling capacity of the pneumatic conveying device in the scheme is 1T/h, and the discharging device 2 comprises a discharging electric ball valve and an outlet pneumatic conveying device 9 arranged at the other end of the discharging electric ball valve.
Be provided with heating device 3 on the lower part outer wall of analysis cauldron 7, specifically be a press from both sides cover oil temperature heating device, set up the bottom at analysis cauldron. The heating device 3 is provided with an oiling device 11, and the heating device 3 comprises a tilted electric heating rod to supplement consumed hot oil. A temperature sensor 4 is provided in the heating device 3 to monitor the oil temperature. The bottom of the resolving kettle 7 is provided with a vent and a hot air supply interface 8, and the hot air supply interface 8 is connected with a heat recovery device 10 through a pipeline. A heat recovery device: a manual valve 102, an electric valve 101, a cold compensation valve 103, a duct, and a temperature sensor 4 are provided. According to the program control of the mixed air temperature sensor, when the temperature is higher than 150 ℃, the bypass cold supplement valve 103 is opened to automatically supplement cold air, and the temperature of the mixed air is controlled to be 100-150 ℃ through normal desorption.
The analysis kettle 7 is provided with sensors including a temperature sensor 4 and a vacuum sensor 5. And a plurality of instrument devices including a charge level indicator, a control instrument and the like are also arranged. The control instrument is arranged on the control instrument interface. The upper end of the analysis kettle 7 is provided with an analysis kettle outlet pipe 6, the other end of the outlet pipe 6 is provided with a vacuum pump 13, and the vacuum pump 13 pumps out the gas in the analysis kettle and conveys the gas to the RCO catalytic combustion device 15. A temperature sensor 4 and a vacuum gauge 12 are provided between the vacuum pump and the analysis kettle, and a concentration sensor 14 is provided between the vacuum pump 13 and the RCO catalytic combustion device 15. A concentration sensor 14 is also provided at the gas outlet of the ROC catalytic combustion apparatus 15.
The RCO catalytic combustion device comprises a heat exchanger 19, wherein an air inlet 20 and an air outlet 21 are respectively arranged at two ends of the heat exchanger 19. A heating device is arranged above the heat exchanger 19, wherein the heating device comprises a U-shaped heating cover, and an opening of the heating cover is arranged on the heat exchanger 19. Two ends and the top of the heating cover are respectively provided with a heating rod 22, the heating rod 22 and the heat exchanger 19 form a cavity, a nonmetal catalyst 26 is arranged in the cavity, a noble metal catalyst 25 is arranged above the nonmetal catalyst 26, and a thermocouple 23 is arranged at the bottom of the cavity. The heating cover is also provided with an air leakage pipeline, and the air leakage pipeline is provided with an explosion venting valve 27. The outer ring of the RCO catalytic combustion device is also provided with a complete wrapped insulating layer 24.
The RCO catalytic combustion device adopts a high-efficiency combined catalyst which is combined by a nonmetal catalyst, a metal catalyst and a ceramic heat accumulator in a pertinence manner, so that the economy is better. The catalytic combustion efficiency is more than or equal to 90% in a catalytic combustion chamber at 250 ℃, and the catalytic combustion efficiency is more than or equal to 95% in a catalytic combustion chamber at 300 ℃; the catalytic combustion chamber can save energy, exchange heat and recover 80-90%.
The adsorption molecular sieve for adsorbing VOCs is conveyed to the desorption vacuum thermal desorption kettle by utilizing a pneumatic conveying system technology, then thermal recovery desorption is carried out by utilizing a heat source of the RCO incineration device, high-efficiency desorption is realized under high vacuum, the adsorption molecular sieve after desorption is sent back to the adsorption tank through the pneumatic conveying device, the regenerated molecular sieve can continue to adsorb, adsorption-desorption cycle operation is repeated, and the safe and high-efficiency operation of a VOCS treatment system is ensured.
The tail gas that the desorption produced can carry out condensation through the condenser and retrieve the solvent, can also adopt directly to carry out RCO catalytic combustion and handle, and this technology adopts RCO catalytic combustion to handle, and catalytic combustion's waste heat 60~80% is recycled to the desorption process.
A novel waste gas treatment method for a high-efficiency vacuum desorption system specifically comprises the following steps:
after the adsorption of the adsorbent molecular sieve is saturated, the molecular sieve containing VOCS is sucked into a vacuum thermal desorption kettle through a pneumatic conveying and feeding device, then heat conducting oil in a jacket is heated through a heat source on the jacket, the desorption temperature in the desorption kettle is 100-150 ℃, and the air pressure is set to be vacuum of 0-98 KPa. And (3) analyzing for 3-6h under the analysis condition, simultaneously opening a vacuum pump for desorption after RCO preheating and heating are finished, automatically supplementing tail gas after RCO combustion into a vacuum thermal analysis kettle according to a set program, and controlling an operation mode by adopting a timing and intermittent program until the desorption is finished.
After the desorption is finished, the desorbed molecular sieve can be sent back to the adsorption tank through the pneumatic conveying and discharging device.
The desorption can be continuously and cyclically carried out until all desorption is finished. The intelligent operation can be fully automatic.
The vacuum desorption process system principle is as follows: the adsorbent containing VOCS is heated and desorbed in a vacuum mode, the adsorbate is heated under the high vacuum condition, the boiling point is rapidly reduced under the action of the adsorbed VOCS high vacuum condition, and the adsorbate can be desorbed better and more effectively, so that the adsorbate is regenerated.
The vacuum desorption process is mainly characterized in that: the high negative pressure (-98 Kpa) suction effect adopted by desorption is completely different from the traditional low positive pressure blowing desorption (2-3 Kpa) in two stress modes, so that the temperature, the energy consumption and the safety of desorption are correspondingly changed essentially.
From the analysis of the adsorption and desorption principles, the adsorption of the VOCS molecules mainly depends on the action of the van der Waals force among the molecules, and the stronger the action force of the van der Waals force is, the higher the adsorption efficiency is; while the effectiveness of desorption is just the opposite, it is known that molecules with high boiling points are more difficult to desorb from the adsorbent than organic molecules with low boiling points, and higher energy or temperature is required for desorption.
Octane: the conventional hot gas desorption needs 120-130 ℃, the boiling point is reduced to 30 ℃ when the vacuum degree is-97 Kpa, and the desorption can be effectively analyzed as long as the temperature during vacuum desorption is increased to 40-55 ℃.
At present, how to develop a new technology which is safe, energy-saving and can effectively desorb in waste gas treatment is very important. The development and research of vacuum desorption technology is to deal with and solve the above problems and defects.
Under the high vacuum state, the high boiling point is changed into the low boiling point, the energy consumption and the safety are greatly improved, and the vacuum desorption has the potential and the advantages, so that people pay more and more attention to the vacuum desorption. The technology has the technical advantages of vacuum desorption, innovatively combines the advanced technology of RCO catalytic combustion and waste heat recycling, ensures that the system has more perfection and advancement, and is an upgrade B of vacuum desorption of our company.
And (3) technical index comparison: compared with the normal pressure desorption, the vacuum desorption and the positive pressure thermal desorption save energy by 40-60 percent, and the operation cost saves 30-40 percent of the operation cost. For 20000m3The/h treatment system can save 53280 yuan for the recovery of desorption hot gas all year round, and can save 7-8 million yuan RMB one year by adding the energy consumption cost saved by RCO. The larger the treatment system, the more economic advantages are.
The invention has the advantages of low desorption temperature, high desorption efficiency, low desorption energy consumption, less equipment investment, low operation cost, safe process, small occupied area and the like compared with the normal pressure desorption, condensation recovery or RCO catalytic combustion treatment technology. Compared with the conventional vacuum desorption, the method has the advantages of high efficiency, energy conservation, low equipment investment cost and low operation cost.
The innovative technology has the characteristics of advanced, safe, reliable, high automation degree and the like.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The invention is described above with reference to the accompanying drawings, it is obvious that the implementation of the invention is not limited in the above manner, and it is within the scope of the invention to adopt various modifications of the inventive method concept and solution, or to apply the inventive concept and solution directly to other applications without modification.
Claims (10)
1. The utility model provides a novel high-efficient vacuum desorption system integrated equipment, includes vacuum desorption device, RCO catalytic combustion device, thermal recovery desorption device and PLC control box, its characterized in that vacuum desorption device give vent to anger the end with RCO catalytic combustion device passes through first pipe connection, and the inlet end is provided with thermal recovery desorption device, thermal recovery desorption device with ROC catalytic combustion device passes through the second pipe connection, the PLC control box respectively with vacuum desorption device RCO catalytic combustion device and thermal recovery desorption device connects to control each device work, vacuum desorption device is including analytic cauldron, the bottom of analytic cauldron is provided with heating device, heating device is including pressing from both sides cover oil temperature heating device.
2. The novel high-efficiency vacuum desorption system complete device as claimed in claim 1, wherein a material inlet is arranged at the top of the desorption kettle, one end of the material inlet is arranged on the desorption kettle, and a feeding device is arranged at the other end of the material inlet;
a material outlet is formed in the bottom of the analysis kettle, one end of the material outlet is arranged on the analysis kettle, and a discharging device is arranged at the other end of the material outlet;
the feeding device and the discharging device respectively adopt pneumatic conveying devices.
3. The novel high-efficiency vacuum desorption system complete device as claimed in claim 2, wherein the upper end of the desorption kettle is provided with an outlet pipe, the outlet pipe is provided with a vacuum pump, the other end of the outlet pipe is connected to the RCO catalytic combustion device, a temperature sensor and a vacuum meter are arranged between the vacuum pump and the desorption kettle, and a concentration sensor is arranged between the vacuum pump and the RCO catalytic combustion device.
4. The novel high-efficiency vacuum desorption system complete device as claimed in claim 2 or 3, wherein the analysis kettle is provided with a sensor, which comprises a temperature sensor and a vacuum sensor;
instrumentation is also provided, including a level gauge and a control instrument.
5. The novel high-efficiency vacuum desorption system complete device as claimed in claim 1, wherein an oil filling device is arranged on the heating device, and a temperature sensor is further arranged in the heating device.
6. The novel high-efficiency vacuum desorption system complete device as claimed in claim 1, wherein the bottom of the desorption kettle is provided with a vent and a hot air supply interface, and the hot air supply interface is connected with the heat recovery device through a pipeline.
7. The novel high-efficiency vacuum desorption system complete device as claimed in claim 1, wherein the catalytic combustion device comprises a heat exchanger, an air inlet and an air outlet are respectively arranged at two ends of the heat exchanger, the air inlet is connected with the first pipeline, the air outlet is connected with the second pipeline, a heating cover is arranged above the heat exchanger, heating rods are arranged on the inner wall and the top of the heating cover, a catalyst is further arranged in the middle of the heating cover, and a thermocouple is arranged between the heating cover and the heat exchanger.
8. The novel high-efficiency vacuum desorption system complete device as claimed in claim 7, wherein the top of the heating cover is further provided with an air leakage pipeline, and the air leakage pipeline is provided with an explosion venting valve; the combustion device is also provided with a heat preservation layer, and the heat preservation layer wraps the heat exchanger and the outer wall of the heating cover.
9. The novel high-efficiency vacuum desorption system set apparatus as claimed in claim 1, wherein: and a third pipeline is arranged on the second pipeline, one end of the third pipeline is arranged on the second pipeline, and a chimney is arranged at the other end of the third pipeline.
10. A novel waste gas treatment method for a complete set of high-efficiency vacuum desorption system is characterized by comprising the following steps:
s1 absorbing the saturated adsorbent molecular sieve, firstly absorbing the molecular sieve containing VOCS into a vacuum thermal desorption kettle through a pneumatic conveying feeding device;
s2, heating a heat source in the jacket through hot oil, keeping the analysis temperature in the analysis kettle at 100-150 ℃, setting the analysis air pressure at 0-98 Kpa, analyzing for 3-6h, and preheating the RCO catalytic combustion device;
s3, opening a vacuum pump, desorbing, automatically supplementing tail gas after RCO combustion into a vacuum thermal analysis kettle through a thermal recovery device according to a set program, and repeating the steps until desorption is completed;
and after S4 desorption is completed, the desorbed molecular sieve is sent back to the adsorption tank through a pneumatic conveying discharging device.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112377932A (en) * | 2020-11-16 | 2021-02-19 | 昆山工统环保科技有限公司 | Organic waste gas adsorption-desorption-catalytic combustion device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112377932A (en) * | 2020-11-16 | 2021-02-19 | 昆山工统环保科技有限公司 | Organic waste gas adsorption-desorption-catalytic combustion device |
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