CN104190205A - Exhaust gas recovery cycle working method and device - Google Patents
Exhaust gas recovery cycle working method and device Download PDFInfo
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- CN104190205A CN104190205A CN201410505856.4A CN201410505856A CN104190205A CN 104190205 A CN104190205 A CN 104190205A CN 201410505856 A CN201410505856 A CN 201410505856A CN 104190205 A CN104190205 A CN 104190205A
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Abstract
The invention discloses an exhaust recovery cycle working method and device. The organic exhaust gas recovery device comprises a dust-removal cooling box, an induced draft fan, adsorption tanks, a condenser and a separation box, wherein four adsorption tanks are used for completing the continuous cycle process of adsorption, desorption and regeneration. The exhaust gas recovery cycle working method is realized through the way that: when the adsorption tanks 1, 2 and 3 are in an adsorption state, the adsorption tank 4 is in states of desorption and regeneration; the next working state is that the adsorption tanks 2 and 3 are in an adsorption state while the adsorption tank 1 is in states of desorption and regeneration, and by repeating in this way, the different adsorption tanks are in different states, namely adsorption, desorption and regeneration in different working periods. According to the exhaust gas recovery cycle working method and device, good simplicity in operation and higher exhaust purification ratio and solvent recovery ratio can be realized.
Description
Technical field
The invention belongs to exhaust-gas treatment field, particularly relate to adsorption and desorption, method for recycling and device that a kind of organic exhaust gas reclaims.
Background technology
Organic exhaust gas is the modal pollutant that the industries such as coating production, paint production, pharmacy, printing, papermaking, weaving and petrochemical industry are discharged.These organic exhaust gas majorities have toxicity can cause atmosphere pollution, and the mankind's health and environment are all had to harm.In recent years, along with the development of industrial technology, Organic Waste Gas Pollution is more and more serious, is also a kind of waste to resource simultaneously, and the recovery of research organic exhaust gas has very important realistic meaning.At present, the subject matter that domestic organic exhaust gas recovery exists is that the adsorption rate of organic exhaust gas is difficult to further raising, for high-concentration waste gas, can not process qualified discharge.
Summary of the invention
For the problems referred to above, in order to obtain higher adsorption rate, the invention provides the organic exhaust gas that a kind of adsorption rate is high, treatment effect is good and reclaim periodic duty method and apparatus.
The technical solution adopted in the present invention is:
Waste gas reclaims periodic duty device and comprises dedusting cooling box, air-introduced machine, four adsorption tanks, condenser, separator box, switch valve and four common line.
Adsorption tanks have 4, it is upper that each adsorption tanks is linked respectively four common line (organic exhaust gas air inlet pipe, waste gas exhaust pipe, overheated steam pipe, organic liquid waste delivery pipe) after purifying through four switch valves (inlet flap, exhaust damper, enter steam valve, organic liquid waste vent valves), completes the continuous circulation course of work of adsorption and desorption, regeneration through the switching of valve.
Adsorption tanks periodic duty autocontrol method is: organic exhaust gas is after dedusting cooling, by blower fan, sucked in adsorption tanks, by the active carbon in fixed bed, it is adsorbed, when absorption is saturated, superheated steam is passed into adsorption tanks and carry out desorption, after desorption is complete, to adsorption tanks steam discharge, regenerate, desorption product enters separator box after condensation, obtains organic solvent after separation.This adsorption and desorption, regenerative process are continuous cyclic processes, and loop control step is as follows: when adsorption tanks 1., 2., during 3. in adsorbed state, adsorption tanks are 4. in detachment status; Next duty be adsorption tanks 2., 3., 2., 3. in adsorbed state, adsorption tanks are 1. in detachment status, so circulation is gone down.Each adsorption tanks is in the different operating period, respectively in adsorption and desorption, reproduced state.
Compared with the conventional method, the usefulness of the inventive method is: solved the lower problem of the organic solvent rate of recovery that in traditional air separator of oxygenerator, adsorption tanks work alone separately and cause, by the work between each adsorption tanks, coordinated and effectively raised adsorption efficiency.
Accompanying drawing explanation
Fig. 1 is that organic exhaust gas reclaims periodic duty installation drawing.
In accompanying drawing 1, number 1～4th, adsorption tanks, numbering 5 are that superheated steam, numbering 6 are that waste gas, numbering 7 after purifying is that organic exhaust gas, numbering 8 are that dedusting cooling box, numbering 9 are that blower fan, numbering 10 are that condenser, numbering 11 are that separator box, numbering 12 are organic solvent holding vessel, numbering 13～16th, inlet flap, numbering 17～20th, and exhaust damper, numbering 21～24th, enter steam valve, numbering 25～28th, organic liquid waste vent valves.
Fig. 2 is organic exhaust gas recovery operation flow chart.
Fig. 3 is that organic exhaust gas reclaims adsorption tanks automatic cycle electric control flow chart processed.
Fig. 4 is adsorption tanks structure charts
In accompanying drawing 4, numbering 1 is adsorption tanks, numbering 2 is air inlet upper covers, numbering 3 is cylinders, numbering 4 is air inlet door closures, numbering 5 is air inlet cylindrical shells, numbering 6 is air inlets, numbering 7 is sealing surfaces, numbering 8 is active carbons, numbering 9 is exhaust upper covers, numbering 10 is cylinders, numbering 11 is exhaust valve caps, numbering 12 is air inlet cylindrical shells, numbering 13 is exhaust outlets, numbering 14 is organic exhaust gas, numbering 15 is the waste gas after purifying, numbering 16 is into steam valve, numbering 17 is organic liquid waste vent valves, numbering 18 is superheated steams, numbering 19 is organic liquid wastes.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further.
The organic exhaust gas discharging in industrial processes, after dedusting cooling, is introduced in adsorption tanks by blower fan, and in adsorption tanks, organic exhaust gas is through NACF, and organic solvent is by carbon fiber adsorption and catalytic combustion, and purified gas is discharged by adsorption tanks top.
After adsorption tanks absorption is saturated, enter desorption process, superheated steam is passed in adsorption tanks and carries out desorption, after desorption completes, to adsorption tanks steam discharge, regenerate; Desorption product enters in condenser, through condensed organic solvent and water vapor mixture, enters in separator box, obtains organic solvent after separation.
Adsorption and desorption, regenerative process are actually continuous cyclic process, and each adsorption tanks is in the different operating period, respectively in adsorption and desorption, reproduced state.
Adsorption tanks periodic duty autocontrol method of the present invention is:
First, tank 1 enters adsorption process, and air inlet, the air bleeding valve of now PLC control tank 1 are opened.
When tank 1 completes after an adsorption time, tank 2 also enters adsorption process, and PLC controls corresponding valve and opens, and now tank 1 is still adsorption process.
When tank 2 completes after an adsorption time, tank 3 enters adsorption process, and now tank 1,2 is still adsorption process.
When tank 3 completes after an adsorption time, tank 1 enters desorption, regenerative process, and PLC controls air inlet, the air bleeding valve of closing tank 1, opens its steam, tapping valve, and now tank 2,3 is still adsorption process, and tank 4 also enters adsorption process.
After completing desorption, regeneration, tank 1 enters stand-by time; now exhaust steam valve opens to reduce tank internal pressure and temperature; stand-by time is that the difference of adsorption time and desorption time is (according to the requirement of active carbon absorption technology; adsorption time should be slightly larger than desorption time; system has also designed interlock protection at this, if desorption time be greater than adsorption time system can not work).
After tank 1 standby completes, enter adsorption process, now tank 2 starts desorption, regeneration, and tank 3,4 still adsorbs.
After this 4 tanks will, by process periodic duty like this, quit work until system obtains stopping signal.
Be more than preferred embodiment of the present invention, not the present invention done to any pro forma restriction, every foundation technical spirit of the present invention, to any simple modification made for any of the above embodiments, equivalent variations and modification, all belongs in the scope of invention technical scheme.
Claims (1)
1. a waste gas reclaims periodic duty method and apparatus, it is characterized in that, 4 adsorption tanks are linked respectively in four common line (organic exhaust gas air inlet pipe, waste gas exhaust pipe, overheated steam pipe, organic liquid waste delivery pipe) after purifying through four switch valves (inlet flap, exhaust damper, enter steam valve, organic liquid waste vent valves); Periodic duty method is: when adsorption tanks 1., 2., during 3. in adsorbed state, adsorption tanks are 4. in desorption, reproduced state; Next duty be adsorption tanks 2., 3., 2., 3. in adsorbed state, adsorption tanks are 1. in desorption, reproduced state, so circulation is gone down; Each adsorption tanks is in the different operating period, respectively in adsorption and desorption, reproduced state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410505856.4A CN104190205A (en) | 2014-09-26 | 2014-09-26 | Exhaust gas recovery cycle working method and device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410505856.4A CN104190205A (en) | 2014-09-26 | 2014-09-26 | Exhaust gas recovery cycle working method and device |
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| CN104190205A true CN104190205A (en) | 2014-12-10 |
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| CN201410505856.4A Pending CN104190205A (en) | 2014-09-26 | 2014-09-26 | Exhaust gas recovery cycle working method and device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105169886A (en) * | 2015-10-30 | 2015-12-23 | 黄文科 | Efficient energy-saving large-air-quantity low-concentration organic waste gas recovery and treatment device and method |
| CN105289130A (en) * | 2015-11-19 | 2016-02-03 | 苏州韵蓝环保科技有限公司 | Production line exhaust gas recovery device |
| CN109482165A (en) * | 2018-11-06 | 2019-03-19 | 无锡四方集团有限公司 | The desorption and regeneration and its tail gas treatment process of the adsorbent of organic matter in adsorbed water body |
| CN110508094A (en) * | 2019-09-09 | 2019-11-29 | 江南大学 | A kind of organic waste gas recycling system and its control method for fully automatic |
| CN114558420A (en) * | 2022-03-07 | 2022-05-31 | 班戈设备系统（苏州）有限公司 | System and method for recycling VOCs (volatile organic compounds) through normal-temperature condensation |
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| JPH10118439A (en) * | 1996-08-30 | 1998-05-12 | Shigeo Sato | Gas separating device based on psa process |
| WO2000048713A1 (en) * | 1999-02-17 | 2000-08-24 | System Eng Service Co., Ltd. | Method for treating dilute gaseous hydrogen carbide contained in waste gas and device for performing the method |
| CN1610576A (en) * | 2001-12-28 | 2005-04-27 | 系统工程服务股份有限公司 | Method for treating exhaust gas containing volatile hydrocarbon, and apparatus for practicing said method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105169886A (en) * | 2015-10-30 | 2015-12-23 | 黄文科 | Efficient energy-saving large-air-quantity low-concentration organic waste gas recovery and treatment device and method |
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| CN105289130A (en) * | 2015-11-19 | 2016-02-03 | 苏州韵蓝环保科技有限公司 | Production line exhaust gas recovery device |
| CN109482165A (en) * | 2018-11-06 | 2019-03-19 | 无锡四方集团有限公司 | The desorption and regeneration and its tail gas treatment process of the adsorbent of organic matter in adsorbed water body |
| CN110508094A (en) * | 2019-09-09 | 2019-11-29 | 江南大学 | A kind of organic waste gas recycling system and its control method for fully automatic |
| CN110508094B (en) * | 2019-09-09 | 2024-04-05 | 江南大学 | Organic waste gas recovery system and full-automatic control method thereof |
| CN114558420A (en) * | 2022-03-07 | 2022-05-31 | 班戈设备系统（苏州）有限公司 | System and method for recycling VOCs (volatile organic compounds) through normal-temperature condensation |
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Application publication date: 20141210 |