CN105413387B - A kind of VOCs tail gas adsorptions-catalytic-combustion processing system - Google Patents
A kind of VOCs tail gas adsorptions-catalytic-combustion processing system Download PDFInfo
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- CN105413387B CN105413387B CN201510771265.6A CN201510771265A CN105413387B CN 105413387 B CN105413387 B CN 105413387B CN 201510771265 A CN201510771265 A CN 201510771265A CN 105413387 B CN105413387 B CN 105413387B
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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
-
- 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
-
- 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
-
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Separation Of Gases By Adsorption (AREA)
- Incineration Of Waste (AREA)
Abstract
The invention discloses a kind of VOCs tail gas adsorptions-catalytic-combustion processing systems, feature is to include exhaust gas preprocessor, air blower, air-introduced machine, flow direction transformation catalytic combustion system and at least two adsorption towers, exhaust gas preprocessor is connected with air blower, the air inlet of each adsorption tower is connected by the first solenoid valve with air blower, the gas outlet of each adsorption tower is connected by second solenoid valve with air-introduced machine, the gas outlet of each adsorption tower is connected by third solenoid valve with flow direction variation catalytic combustion system, flow direction variation catalytic combustion system is connected with air-introduced machine, the air inlet of each adsorption tower is connected by the 4th solenoid valve with the high temperature gas port of flow direction variation catalytic combustion system；Advantage is that this system can realize high-efficient purification to low concentration VOCs tail gas, and good purification, overall energy consumption are low, non-secondary pollution.
Description
Technical field
The present invention relates to tail gas, the cleaning system of exhaust gas more particularly to a kind of VOCs tail gas adsorptions-catalysis burning processing
System.
Background technology
External coating, printing, printing and dyeing, gas discharge in mine, refuse landfill rubbish landfill gas discharge etc. industrial process
In can generate and discharge the largely tail gas containing VOCs, this kind of tail gas have exhaust air rate is big, in tail gas VOCs concentration it is low, to environment
It pollutes, be harmful to the characteristics of health, harm can not be ignored.Traditional organic waste-gas purification method has absorption method, inhales
Receipts method, condensation method etc., the common feature of such method are that the VOCs in tail gas is enriched with and is recycled, but these methods exist
Treatment effeciency is low, the shortcomings that being also easy to produce secondary pollution, being limited by organism kinds.And catalytic combustion technology can be by this kind of tail gas
It is converted into the substances such as harmless carbon dioxide and water under the effect of the catalyst, while releases heat.It is but burned being catalyzed
The optimal use temperature that exhaust gas heating is reached to catalyst is needed in journey, and since VOCs concentration flammable in this kind of tail gas is low,
Progress of the released shortage of heat of burning catalysis to be maintained to burn, therefore, it is necessary to consume a large amount of additional energy.
Invention content
It is low and without two that the technical problems to be solved by the invention are to provide a kind of good purification, efficient, overall energy consumption
Secondary pollution, suitable for VOCs tail gas adsorptions-catalytic-combustion processing system of low concentration VOCs tail gas clean-ups.
Technical solution is used by the present invention solves above-mentioned technical problem：At a kind of VOCs tail gas adsorptions-catalysis burning
Reason system, including exhaust gas preprocessor, air blower, air-introduced machine, flow direction transformation catalytic combustion system and at least two adsorption towers, institute
The exhaust gas preprocessor stated is connected with the air blower, the air inlet of the adsorption tower by the first solenoid valve with
The air blower is connected, and the gas outlet of each adsorption tower is connected by second solenoid valve with the air-introduced machine
It connecing, the gas outlet of each adsorption tower converts catalytic combustion system with the flow direction by third solenoid valve and is connected,
Described flow direction transformation catalytic combustion system is connected with the air-introduced machine, it is each described in the air inlet of adsorption tower pass through the
Four solenoid valves are connected with the high temperature gas port of the flow direction transformation catalytic combustion system.
The air blower converts catalytic combustion system with the flow direction by the 5th solenoid valve and is connected, for introducing
The VOCs exhaust gas of low concentration is mixed with generated high concentration VOCs exhaust gas after desorption, to be lowered into flow direction transformation catalysis combustion
The VOCs exhaust gas concentrations of device are burnt, avoid damage to the metal catalyst layer in catalytic burner.
The flow direction transformation catalytic combustion system includes catalytic burner, the inlet and outlet of the catalytic burner
It is connected respectively by intake valve between the gas outlet of the adsorption tower or the air blower, the catalytic burner
Inlet and outlet and the air-introduced machine between be connected respectively by air bleeding valve, the high temperature in the middle part of the catalytic burner
Gas port is connected by the 4th solenoid valve with the air inlet of each adsorption tower one-to-one correspondence respectively.
Inert filler and metal catalyst layer are provided in the catalytic burner.
Sorbing material in the adsorption tower is active carbon particle or activated carbon fibre.
Compared with prior art, it is an advantage of the invention that this system can realize the high-efficient purification to low concentration VOCs tail gas,
And good purification, overall energy consumption are low, non-secondary pollution；It implements principle：The VOCs tail gas warp of Wind Volume, low concentration
Concentration improves after adsorption tower absorption-desorption, and the periodic reverse flowing catalysis burning in flow direction converts catalytic combustion system,
Harmless emission after generation carbon dioxide and water, the heat part for releasing of burning are used to maintain the progress of catalyticing combustion process, part
For the desorption process of activated carbon adsorber, being run from maintenance for entire purification process is realized, reduces and disappears to supplementary energy
Consumption.
Description of the drawings
Fig. 1 is the structure diagram of the embodiment of the present invention one；
Fig. 2 is the structure diagram of the embodiment of the present invention two.
Specific embodiment
The present invention is described in further detail below in conjunction with attached drawing, embodiment.
Embodiment one：As shown in the figure, a kind of VOCs tail gas adsorptions-catalytic-combustion processing system, including exhaust gas preprocessor
1st, air blower 2, air-introduced machine 6, flow direction transformation catalytic combustion system and two adsorption towers 3,4, exhaust gas preprocessor 1 and air blower 2
It is connected, the sorbing material in adsorption tower 3,4 is active carbon particle or activated carbon fibre, and the air inlet of adsorption tower 3,4 leads to respectively
It crosses the first solenoid valve 7,9 with air blower 2 to be connected, the gas outlet of adsorption tower 3,4 passes through second solenoid valve 8,10 and air inducing respectively
Machine 6 is connected, and flow direction transformation catalytic combustion system includes catalytic burner 5, and inert filler and gold are provided in catalytic burner 5
Metal catalyst layer, be connected separately with intake valve 16,18 in the inlet and outlet of catalytic burner 5 and pass through third solenoid valve 12 with
The gas outlet of adsorption tower 3 is connected, and intake valve 16,18 is connected separately in the inlet and outlet of catalytic burner 5 and passes through
Three solenoid valves 14 are connected with the gas outlet of adsorption tower 4, and the inlet and outlet of catalytic burner 5 passes through air bleeding valve 17,19 respectively
It is connected with air-introduced machine 6, the air inlet of adsorption tower 3,4 passes through the 4th solenoid valve 11,13 and the height at 5 middle part of catalytic burner respectively
Wet mouth is connected.
In above-described embodiment one, which is to the purification process of low concentration VOCs tail gas：Control the first solenoid valve 7
Opened simultaneously with second solenoid valve 8, the 4th solenoid valve 11 and third solenoid valve 12 simultaneously close off, via air blower 2 introduce it is low
Concentration VOCs tail gas is discharged into after carrying out adsorption cleaning in adsorption tower 3 in air, at the same time, controls the first solenoid valve 9 and the
Two solenoid valves 10 simultaneously close off, the 4th solenoid valve 13 and third solenoid valve 14 open simultaneously, the high temperature from 5 middle part of catalytic burner
The high temperature gas flow that gas port is drawn enters adsorption tower 4 and be desorbed-regenerative process, and the high concentration VOCs exhaust gas after desorption is into becoming a mandarin
Catalysis burning is carried out to transformation catalytic combustion system, is passed through after generating carbon dioxide and water by 6 harmless emission of air-introduced machine.
In above-described embodiment one, which can also be to the purification process of low concentration VOCs tail gas：Control first
Solenoid valve 9 and second solenoid valve 10 open simultaneously, the 4th solenoid valve 13 and third solenoid valve 14 simultaneously close off, via air blower 2
The low concentration VOCs tail gas being introduced into is discharged into after carrying out adsorption cleaning in adsorption tower 4 in air, at the same time, controls the first electromagnetism
Valve 7 and second solenoid valve 8 simultaneously close off, the 4th solenoid valve 11 and third solenoid valve 12 open simultaneously, from 5 middle part of catalytic burner
The high temperature gas flow drawn of high temperature gas port enter adsorption tower 3 and be desorbed-regenerative process, the high concentration VOCs exhaust gas after desorption
Catalysis burning is carried out into flow direction transformation catalytic combustion system, is passed through after generating carbon dioxide and water by 6 harmless emission of air-introduced machine.
Embodiment two：As shown in the figure, a kind of VOCs tail gas adsorptions-catalytic-combustion processing system, including exhaust gas preprocessor
1st, air blower 2, air-introduced machine 6, flow direction transformation catalytic combustion system and two adsorption towers 3,4, exhaust gas preprocessor 1 and air blower 2
It is connected, the sorbing material in adsorption tower 3,4 is active carbon particle or activated carbon fibre, and the air inlet of adsorption tower 3,4 leads to respectively
It crosses the first solenoid valve 7,9 with air blower 2 to be connected, the gas outlet of adsorption tower 3,4 passes through second solenoid valve 8,10 and air inducing respectively
Machine 6 is connected, and flow direction transformation catalytic combustion system includes catalytic burner 5, and inert filler and gold are provided in catalytic burner 5
Metal catalyst layer, be connected separately with intake valve 16,18 in the inlet and outlet of catalytic burner 5 and pass through third solenoid valve 12 with
The gas outlet of adsorption tower 3 is connected, and intake valve 16,18 is connected separately in the inlet and outlet of catalytic burner 5 and passes through
Three solenoid valves 14 are connected with the gas outlet of adsorption tower 4, and intake valve is connected separately in the inlet and outlet of catalytic burner 5
16th, 18 and pass through the 5th solenoid valve 15 and be connected with air blower 2, the inlet and outlet of catalytic burner 5 passes through air bleeding valve respectively
17th, 19 are connected with air-introduced machine 6, and the air inlet of adsorption tower 3,4 is respectively by the 4th solenoid valve 11,13 and catalytic burner 5
The high temperature gas port in portion is connected.
In above-described embodiment two, which is to the purification process of low concentration VOCs tail gas：Control the first solenoid valve 7
Opened simultaneously with second solenoid valve 8, the 4th solenoid valve 11 and third solenoid valve 12 simultaneously close off, via air blower 2 introduce it is low
Concentration VOCs tail gas is discharged into after carrying out adsorption cleaning in adsorption tower 3 in air, at the same time, controls the first solenoid valve 9 and the
Two solenoid valves 10 simultaneously close off, the 4th solenoid valve 13 and third solenoid valve 14 open simultaneously, the high temperature from 5 middle part of catalytic burner
The high temperature gas flow that gas port is drawn enters adsorption tower 4 and be desorbed-regenerative process, the high concentration VOCs exhaust gas after desorption with via
Enter flow direction transformation catalytic combustion system after the low concentration VOCs exhaust gas mergers that 2 and the 5th solenoid valve 15 of air blower introduces to be urged
Change burning, passed through after generating carbon dioxide and water by 6 harmless emission of air-introduced machine.
In above-described embodiment two, which can also be to the purification process of low concentration VOCs tail gas：Control first
Solenoid valve 9 and second solenoid valve 10 open simultaneously, the 4th solenoid valve 13 and third solenoid valve 14 simultaneously close off, via air blower 2
The low concentration VOCs tail gas being introduced into is discharged into after carrying out adsorption cleaning in adsorption tower 4 in air, at the same time, controls the first electromagnetism
Valve 7 and second solenoid valve 8 simultaneously close off, the 4th solenoid valve 11 and third solenoid valve 12 open simultaneously, from 5 middle part of catalytic burner
The high temperature gas flow drawn of high temperature gas port enter adsorption tower 3 and be desorbed-regenerative process, the high concentration VOCs exhaust gas after desorption
With entering flow direction transformation catalytic combustion system after the low concentration VOCs exhaust gas mergers that are introduced via 2 and the 5th solenoid valve 15 of air blower
Catalysis burning is carried out, is passed through after generating carbon dioxide and water by 6 harmless emission of air-introduced machine.
In above-described embodiment, the quantity of adsorption tower can more than two, such as three, four according to actual needs, and alternately
Adsorbed and be desorbed-regenerative process.
In above-described embodiment, the application method of flow direction transformation catalytic combustion system is：Intake valve 16 and air bleeding valve 17 are one
Group and synchro switch, intake valve 18 and air bleeding valve 19 are one group and synchro switch, and two groups of inlet and outlet valves of control are used alternatingly, reach
Switch flow direction in 5 periodically of catalytic burner to control VOCs tail gas, make VOCs tail gas reciprocal in catalytic burner 5
The autothermal catalysis burning of VOCs tail gas is realized in flowing, heat absorption and heat release,；After the process, which reaches, to be stablized, in catalytic burner 5
It is interior can be formed intermediate up to 400~500 DEG C, both sides close to room temperature Temperature Distribution.
Claims (1)
1. a kind of VOCs tail gas adsorptions-catalytic-combustion processing system, including exhaust gas preprocessor, air blower, air-introduced machine, flow direction
Transformation catalytic combustion system and at least two adsorption towers, the exhaust gas preprocessor are connected with the air blower, each
The air inlet of the adsorption tower is connected by the first solenoid valve with the air blower, the outlet of each adsorption tower
Mouthful be connected by second solenoid valve with the air-introduced machine, the gas outlet of each adsorption tower by third solenoid valve and
The flow direction transformation catalytic combustion system is connected, and the flow direction transformation catalytic combustion system is connected with the air-introduced machine
It connects, the air inlet of each adsorption tower passes through the High Temperature Gas that the 4th solenoid valve converts catalytic combustion system with the flow direction
Mouth is connected, it is characterised in that：The air blower converts catalytic combustion system phase by the 5th solenoid valve and the flow direction
Connection, the flow direction transformation catalytic combustion system include catalytic burner, the inlet and outlet of the catalytic burner with
It is connected respectively by intake valve between the gas outlet of the adsorption tower, the air blower, the catalytic burner
It is connected respectively by air bleeding valve between inlet and outlet and the air-introduced machine, the High Temperature Gas in the middle part of the catalytic burner
Mouth is connected by the 4th solenoid valve with the air inlet of each adsorption tower one-to-one correspondence respectively；The catalysis
Inert filler and metal catalyst layer are provided in burner；Sorbing material in the adsorption tower is active carbon particle or work
Property Carbon fibe.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510771265.6A CN105413387B (en) | 2015-11-12 | 2015-11-12 | A kind of VOCs tail gas adsorptions-catalytic-combustion processing system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510771265.6A CN105413387B (en) | 2015-11-12 | 2015-11-12 | A kind of VOCs tail gas adsorptions-catalytic-combustion processing system |
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| CN105413387A CN105413387A (en) | 2016-03-23 |
| CN105413387B true CN105413387B (en) | 2018-07-10 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107970739A (en) * | 2016-10-21 | 2018-05-01 | 无锡云瑞环保设备有限公司 | Zeolite molecular sieve catalysis pyrolysis oven |
| CN107789946B (en) * | 2017-11-30 | 2023-12-29 | 江苏飞视文化发展有限公司 | Waste gas recovery and purification system of printing machine |
| CN108404598A (en) * | 2018-01-17 | 2018-08-17 | 苏州驰伦环保设备有限公司 | Activated carbon adsorption and catalytic combustion system |
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