CN1381298A - Cleaning process and equipment for burning and exhausting low-concentration organic waste gas - Google Patents
Cleaning process and equipment for burning and exhausting low-concentration organic waste gas Download PDFInfo
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- CN1381298A CN1381298A CN 01115341 CN01115341A CN1381298A CN 1381298 A CN1381298 A CN 1381298A CN 01115341 CN01115341 CN 01115341 CN 01115341 A CN01115341 A CN 01115341A CN 1381298 A CN1381298 A CN 1381298A
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Abstract
A process for cleaning the low-concentration waste organic gas exhausted by combustion apparatus includes such step sas high-speed heat exchange of fume in a fast heat exchanger, then alternative adsorption/desorption in two adsorption/desorption units switched automatelly by valves, regenerating adsorbent for reuse, returning the desorbed organic gas to the combustion apparatus for secondary combustion, and exhausing the cleaned fume via a chimney. Its advantages are high effect and high removal rate of total hydrocarbons.
Description
The invention belongs to contained organic gas purification technical field in the flue gas, relate in particular to the method and the equipment thereof of organic gas purification in production, smelting, castoff burning and the coal combustion discharged flue gas such as light industry, electronics, chemical industry.
Organic gas such as polycyclic aromatic hydrocarbon (PAHs), phenols, organic acid and contain heteroatomic high polymerizable organic compounds such as nitrogen, sulphur, chlorine and the harm of ecological environment and human health has been caused various countries expert's great attention.Organic gas not only can polluted-water, vegetation destruction, have cumulative function in organism, and can produce teratogenesis, carcinogenic, mutagenic effect to human body.Organic gas is adsorbed on the airborne fine particulate matter, can cause more serious harm to ecological environment.Therefore, the organic exhaust gas that various burners are discharged carries out purified treatment, and passes through the removal efficiency of the renewal raising organic gas of technological means, avoids secondary pollution comprehensively, realizes qualified discharge, is a very urgent task.Traditional organic gas purification technology mainly is divided into two kinds of direct burning and catalytic combustions.Its topmost shortcoming is that not considering to burn the back flue gas discharges burner to the flue gas evacuation procedure, decline along with flue-gas temperature, the organic compound intermediate that burner is discharged can regroup, and the use of catalyst can promote the synthetic reaction of organic compound intermediate to a certain extent, generates the organic pollution of toxic property.Said process is the important channel that the Secondary Organic pollutant forms.For example, Chinese patent ZL93222819.4 discloses a kind of device that will adsorb the concentrated processing organic exhaust gas that combines with catalytic combustion, Chinese patent ZL98204250.7 discloses a kind of catalytic combustion organic waste gas treatment device, above-mentioned patent is not all discharged flue gas the factor that forms secondary pollution behind the purifier again and is taken into account, has therefore reduced the purification efficiency of technology.
At deficiency of the prior art and defective, purpose of the present invention and task provide a kind of purification method and equipment thereof of burning and exhausting low-concentration organic waste gas, it can avoid the formation and the discharging of the preceding secondary organic pollution of flue gas emptying, improve the total hydrocarbon removal efficiency, thereby the high efficiency that realizes the organic exhaust gas of combustion apparatus discharging purifies and removes, and realizes qualified discharge fully.
Above-mentioned goal of the invention and task are to be achieved through the following technical solutions:
A kind of purification method of burning and exhausting low-concentration organic waste gas the steps include:
1. the organic exhaust gas of burner generation determines whether to adopt dust arrester to remove according to the dustiness in the flue gas
Dirt enters the quick heat-exchanger rig of flue gas afterwards.
2. pass through the automatic control of valve through the flue gas of fast cooling, it is compound to enter first flue gas absorption/desorption
Device makes organic gas in the flue gas by the ADSORPTION IN A FIXED BED in the device, and flue gas after being purified is by air-introduced machine
Introduce smoke stack emission.
3. after the adsorption potential in above-mentioned first flue gas absorption/desorption set composite is saturated by organic gas absorption,
By the automatic control of valve, the flue gas of process fast cooling enters another flue gas automatically by main line and inhales
Attached/the desorption set composite, make organic gas in the flue gas by the ADSORPTION IN A FIXED BED in the device, the cigarette after the purification
Gas is introduced smoke stack emission by air-introduced machine.Adsorb first absorption/desorption set composite warp after saturated simultaneously
Automatically control, the hot flue gas that gas bypass is attracted feeds this absorption/desorption set composite, carries out organic
The desorption of gas is handled, and the organic gas behind the desorption is carried by air-introduced machine introducing burner by hot flue gas
The row second-time burning.
4. after the adsorption potential in above-mentioned another flue gas absorption/desorption set composite is saturated by organic gas absorption,
By the automatic control of valve, the flue gas of process fast cooling enters first desorption again automatically by main line
Flue gas absorption/desorption the set composite that finishes carries out purified treatment, adsorbs another suction after saturated simultaneously
Attached/desorption set composite is through control automatically, and the hot flue gas that gas bypass attracts is multiple by this absorption/desorption
Attach together and put, carry out the desorption of organic gas and handle, the organic gas behind the desorption is carried by air inducing by hot flue gas
Power traction is gone into burner and is carried out second-time burning.
5. above-mentioned steps 2--4 process automatic switchover circulation is carried out.
Realize the equipment of above-mentioned burning and exhausting low-concentration organic waste gas purification method, it comprises burner, the quick heat-exchanger rig of flue gas, two absorption that is used alternatingly/desorption set composites.Its design feature is that the exhanst gas outlet of described burner is connected in series by the quick heat-exchanger rig of trunk line and flue gas.The outlet of the quick heat-exchanger rig of flue gas is joined with the inlet of set absorption/desorption set composite one, valve three and absorption/desorption set composite two, valve four respectively by valve one and valve two.The inlet of the outlet of absorption/desorption set composite one and valve five joins and inserts the burner inlet by desorption pipeline one by air-introduced machine one.The inlet of the outlet of absorption/desorption set composite two and valve six joins and inserts the burner inlet by desorption pipeline two by air-introduced machine two.The outlet of valve three, valve four enters in the trunk line of the quick heat-exchanger rig of flue gas front portion by desorption pipeline three and desorption pipeline four respectively.The outlet of valve five, valve six all inserts chimney by air-introduced machine three.
According to above-mentioned technical scheme, also be connected with dust arrester between the quick heat-exchanger rig of described burner and flue gas; Described each valve is can be by the magnetic valve of computer controlled automatic; The suction type of described each absorption/desorption set composite adopts based on cellular activated carbon fixed bed.
The present invention has the following advantages and useful effect compared with the prior art:
1. the present invention has adopted the quick heat-exchanger rig of flue gas, make the flue gas that contains the organic gas intermediate in time several seconds, finish temperature-fall period, fully reduced the diffusion contact probability of organic gas intermediate, significantly reduced the quantity of the synthetic organic pollution of intermediate secondary simultaneously, can efficiently control regenerating the waste heat that the quick heat-exchanger rig of flue gas produced and to make full use of of secondary pollution, improve efficiency of utilization.
2. the present invention adopts two cover flue gas absorption/desorption set composites alternately to switch use, and the flue gas that contains organic gas behind the desorption is introduced burner again and is carried out complete cracking and fully burning, said process circulates repeatedly, organic gas is degraded fully, reduce the flue gas organic gas content that trunk line is discharged, improved the effect and the utilization ratio of absorption/desorption set composite simultaneously.
3. the present invention automaticallyes switch two cover flue gas desorption/adsorbent equipments by the automatic control to each valve, and the gas cleaning process is being carried out incessantly; Improved automaticity greatly.
4. the present invention does not adopt the smoke catalytic purifier, has avoided the secondary of organic compound intermediate under catalyst action synthetic effectively.
5. the present invention adopts the main body of Alveolate activated carbon capable fixed bed as flue gas absorption/desorption set composite, to the not influence of flue gas resistance of whole system.
6. the present invention arranges the quick heat-exchanger rig of flue gas and absorption/desorption set composite combination, has saved occupation area of equipment, has reduced the complexity of technology, and the investment of equipment and operating cost are also lower.
Be described further below in conjunction with the enforcement of accompanying drawing the inventive method.
Accompanying drawing is a device structure connection layout of implementing the inventive method.
Identical described in concrete steps of the inventive method and the technical scheme do not repeat them here.
The equipment of implementing the inventive method referring to accompanying drawing comprises that the quick heat-exchanger rig of burner 1, dust arrester 2, flue gas 3, two are used alternatingly suction type based on cellular activated carbon fixed bed absorption/desorption set composite 4 and 5.The exhanst gas outlet of burner 1 is connected in series with dust arrester 2, the quick heat-exchanger rig 3 of flue gas by trunk line 19.The outlet of the quick heat-exchanger rig 3 of flue gas is joined with the inlet of absorption/desorption set composite 4, valve 6 and absorption/desorption set composite 5, valve 9 respectively by valve 7 and valve 8.The inlet of the outlet of absorption/desorption set composite 4 and valve 10 joins and inserts burner 1 inlet by desorption pipeline 12 by air-introduced machine 18.The inlet of the outlet of absorption/desorption set composite 5 and valve 11 joins and inserts burner 1 inlet by desorption pipeline 15 by air-introduced machine 17.The outlet of valve 6, valve 9 enters in the trunk line 19 of the quick heat-exchanger rig of flue gas 3 front portions by desorption pipeline 13 and desorption pipeline 14 respectively.The outlet of valve 10, valve 11 all inserts chimney 22 by air-introduced machine 16.Described valve 6,7,8,9,10,11 is can be by the magnetic valve of computer controlled automatic.
When the present invention moves, the flue gas that contains organic gas of discharging enters dust arrester 2 through trunk line 19 from burner 1, gas after the dedusting enters the quick heat-exchanger rig 3 of flue gas and carries out the fast cooling processing, trunk line 19 behind the quick heat-exchanger rig of flue gas is divided into two-way, valve-off 6, valve 8, valve 9, valve 11 and air-introduced machine 17, air-introduced machine 18 and damper thereof, flue gas enters absorption/desorption set composite 4 from lateral 20 and carries out the adsorption treatment of organic gas, and flue gas after being purified is introduced chimney 22 dischargings by air-introduced machine 16.When organic gas in the absorption/desorption set composite 4 adsorbs when saturated, valve 7, valve 10 is closed automatically, valve 6, valve 8, valve 11, blower fan 18 and damper thereof are opened automatically, and the aperture by control valve 8, carry out the adjusting of flue gas flow, make the most of flue gas in the trunk line 19 enter lateral 21, carry out the adsorption treatment of organic gas by absorption/desorption set composite 5, simultaneously the hot flue gas of a part before the quick heat-exchanger rig 3 of flue gas is passed through desorption pipeline 13, lateral 20 enters absorption/desorption set composite 4, carry out the desorption processing to adsorbing saturated organic gas, flue gas after the processing carries the organic gas of desorption via desorption pipeline 12, introduces second-time burning in the burner 1 by air-introduced machine 18.In the said process, regulate automatically, realize that the alternately switching between absorption/desorption set composite 4 and the absorption/desorption set composite 5 is used by each valve.When absorption/desorption set composite 5 was carried out the desorption processing, desorption pipeline 14 and desorption pipeline 15 automatic switching ons used, and the flue gas after will being handled by air-introduced machine 17 carries the organic gas of desorption and introduces second-time burning in the burners 1 by air-introduced machine 17.
Certainly, if the dustiness in the flue gas is less, the technical scheme of not using dust arrester 2 to form also belongs to protection scope of the present invention.
Claims (5)
1. the purification method of a burning and exhausting low-concentration organic waste gas the steps include:
(1) organic exhaust gas that burner is produced determines whether to adopt dedusting according to the dustiness in the flue gas
The device dedusting enters the quick heat-exchanger rig of flue gas afterwards;
(2) flue gas of process fast cooling enters first flue gas absorption/desorption by the automatic control of valve
Set composite makes organic gas in the flue gas by the ADSORPTION IN A FIXED BED in the device, the cigarette after the purification
Gas is introduced smoke stack emission by air-introduced machine;
(3) adsorption potential in above-mentioned first flue gas absorption/desorption set composite is full by organic gas absorption
With after, by the automatic control of valve, enter automatically by main line through the flue gas of fast cooling
Another flue gas absorption/desorption set composite makes organic gas in the flue gas by the fixed bed in the device
Absorption, flue gas after being purified is introduced smoke stack emission by air-introduced machine, adsorbs first after saturated simultaneously
Individual absorption/desorption set composite is through control automatically, and the hot flue gas that gas bypass is attracted feeds this suction
Attached/the desorption set composite, carry out the desorption of organic gas and handle, the organic gas behind the desorption is by warm
Flue gas carries by air-introduced machine introducing burner and carries out second-time burning;
(4) adsorption potential in above-mentioned another flue gas absorption/desorption set composite is full by organic gas absorption
With after, by the automatic control of valve, advance automatically again by main line through the flue gas of fast cooling
Go into the flue gas absorption/desorption set composite that first desorption finishes and carry out purified treatment, simultaneously absorption
Another absorption after saturated/desorption set composite is through control automatically, the heat that gas bypass is attracted
Flue gas feeds this absorption/desorption set composite, and carry out the desorption of organic gas and handle, behind the desorption
Organic gas is carried by air-introduced machine introducing burner by hot flue gas and carries out second-time burning;
(5) above-mentioned steps (2)～(4) process automatic switchover circulation is carried out.
2. implement the equipment of the described burning and exhausting low-concentration organic waste gas purification method of claim 1, it comprises burner (1), the quick heat-exchanger rig of flue gas (3), two absorption that is used alternatingly/desorption set composite (4) and (5), it is characterized in that: the exhanst gas outlet of described burner (1) is connected in series the quick heat-exchanger rig of flue gas (3) by trunk line (19) with the quick heat-exchanger rig of flue gas (3) outlet pass through valve (7) and valve (8) respectively with absorption/desorption set composite (4), valve (6) and absorption/desorption set composite (5), the inlet of valve (9) joins, the inlet of the outlet of absorption/desorption set composite (4) and valve (10) joins and inserts burner (1) inlet by desorption pipeline (12) by air-introduced machine (18), the inlet of the outlet of absorption/desorption set composite (5) and valve (11) joins and inserts burner (1) inlet by desorption pipeline (15) by drawing interior machine (17), valve (6), the outlet of valve (9) enters in the anterior trunk line (19) of the quick heat-exchanger rig of flue gas (3) by desorption pipeline (13) and desorption pipeline (14) respectively, valve (10), the outlet of valve (11) all inserts chimney (22) by air-introduced machine (16).
3. according to the equipment of the described burning and exhausting low-concentration organic waste gas purification method of claim 2, it is characterized in that: be connected with dust arrester (2) between described burner (1) and the quick heat-exchanger rig of flue gas (3).
4. according to the equipment of claim 2 or 3 described burning and exhausting low-concentration organic waste gas purification methods, it is characterized in that: described valve (6～11) is can be by the magnetic valve of computer controlled automatic.
5. according to the equipment of the described burning and exhausting low-concentration organic waste gas purification method of claim 4, it is characterized in that: the suction type of described absorption/desorption set composite (4,5) adopts based on cellular activated carbon fixed bed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01115341 CN1381298A (en) | 2001-04-20 | 2001-04-20 | Cleaning process and equipment for burning and exhausting low-concentration organic waste gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01115341 CN1381298A (en) | 2001-04-20 | 2001-04-20 | Cleaning process and equipment for burning and exhausting low-concentration organic waste gas |
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| CN1381298A true CN1381298A (en) | 2002-11-27 |
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|---|---|---|---|
| CN 01115341 Pending CN1381298A (en) | 2001-04-20 | 2001-04-20 | Cleaning process and equipment for burning and exhausting low-concentration organic waste gas |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100428978C (en) * | 2006-08-19 | 2008-10-29 | 蔡宇峰 | Chamber off-line desorption bag adsorption equipment |
| CN100448514C (en) * | 2006-02-06 | 2009-01-07 | 中芯国际集成电路制造(上海)有限公司 | Local waste gas treatment system and its control method |
| CN100453146C (en) * | 2006-11-10 | 2009-01-21 | 浙江大学 | Process and apparatus for purifying arene oxidizing tail gas |
| CN101377393B (en) * | 2007-08-28 | 2011-07-06 | 华懋科技股份有限公司 | Heat recovery device and method |
| CN101637686B (en) * | 2009-09-07 | 2011-10-12 | 孙宗长 | Method for organic waste gas recovery by adopting secondary adsorption |
| CN102463017A (en) * | 2010-11-09 | 2012-05-23 | 江苏中川通大环保设备制造有限公司 | Heat exchange adsorption method and device for gas adsorption, separation and recovery |
| CN104383797A (en) * | 2014-12-02 | 2015-03-04 | 成都华西堂投资有限公司 | Dry-wet purifying recovery treatment process of smoke gas |
| CN107131516A (en) * | 2017-05-25 | 2017-09-05 | 徐州工程学院 | A kind of interior circulation removes the system and method for nitrogen oxides in coal-fired plant flue gas |
| CN109612288A (en) * | 2019-01-25 | 2019-04-12 | 平湖旗滨玻璃有限公司 | The control method of smoke processing system and smoke processing system |
| CN110201484A (en) * | 2019-05-25 | 2019-09-06 | 江苏天宇石化冶金设备有限公司 | A kind of regenerating active carbon adsorption system that organic pollutant is effectively reduced |
-
2001
- 2001-04-20 CN CN 01115341 patent/CN1381298A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100448514C (en) * | 2006-02-06 | 2009-01-07 | 中芯国际集成电路制造(上海)有限公司 | Local waste gas treatment system and its control method |
| CN100428978C (en) * | 2006-08-19 | 2008-10-29 | 蔡宇峰 | Chamber off-line desorption bag adsorption equipment |
| CN100453146C (en) * | 2006-11-10 | 2009-01-21 | 浙江大学 | Process and apparatus for purifying arene oxidizing tail gas |
| CN101377393B (en) * | 2007-08-28 | 2011-07-06 | 华懋科技股份有限公司 | Heat recovery device and method |
| CN101637686B (en) * | 2009-09-07 | 2011-10-12 | 孙宗长 | Method for organic waste gas recovery by adopting secondary adsorption |
| CN102463017A (en) * | 2010-11-09 | 2012-05-23 | 江苏中川通大环保设备制造有限公司 | Heat exchange adsorption method and device for gas adsorption, separation and recovery |
| CN104383797A (en) * | 2014-12-02 | 2015-03-04 | 成都华西堂投资有限公司 | Dry-wet purifying recovery treatment process of smoke gas |
| CN107131516A (en) * | 2017-05-25 | 2017-09-05 | 徐州工程学院 | A kind of interior circulation removes the system and method for nitrogen oxides in coal-fired plant flue gas |
| CN109612288A (en) * | 2019-01-25 | 2019-04-12 | 平湖旗滨玻璃有限公司 | The control method of smoke processing system and smoke processing system |
| CN110201484A (en) * | 2019-05-25 | 2019-09-06 | 江苏天宇石化冶金设备有限公司 | A kind of regenerating active carbon adsorption system that organic pollutant is effectively reduced |
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