CN105031962A - Novel methyl alcohol waste gas recovery system adopting condensation and adsorption integration technology - Google Patents
Novel methyl alcohol waste gas recovery system adopting condensation and adsorption integration technology Download PDFInfo
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Abstract
The invention relates to a novel methyl alcohol waste gas recovery system adopting a condensation and adsorption integration technology. The integrated efficient recovery system integrates condensation and adsorption and is low in emission concentration. The system mainly comprises a fan, a refrigerating system, a heat exchanger A, a heat exchanger B, a recovery tank, a recovery pump, an adsorption tower A, an adsorption tower B, a vacuum pump and the like. The temperature of mixed gas is reduced through a condensation method, and methyl alcohol steam components in the mixed gas can achieve a saturation state to obtain liquid methyl alcohol. A part of methyl alcohol mixed gas which is not liquefied is up to the standard after being adsorbed through the adsorption towers and is discharged, and after penetrating through the adsorption towers, regenerated high-concentration methyl alcohol steam circulates to return to a condensation unit to be condensed. Circulating is carried out in this way to collect the liquid methyl alcohol into the storage tank continuously, the liquid methyl alcohol can be directly conveyed to a position designated by a user or barreled, and treatment and recycle of the methyl alcohol steam are completed. The system combines the advantages of the two recovery methods, the problems that after recovery, the methyl alcohol can not be directly obtained, and tail gas can not be up to the standard are solved, the problem that due to high concentration of adsorbate, adsorption heat is generated is solved, the safety performance is promoted, and the life of adsorbent is prolonged.
Description
Technical field
The present invention relates to methanol waste gas recovery technology field, relate to a kind of methanol waste gas recovery system, be related specifically to that one " condensation+absorption " is integrated, efficient, the high efficiency methanol gas recovery method of low emission concentration and device thereof.
Background technology
In the processes such as groove tank car or tank wagon entrucking emptying, a large amount of methyl alcohol and the mist of air can be given off.If this mist is directly discharged in air, not only bring environmental pollution and disaster hidden-trouble, and can also energy waste be caused.Along with China is to the more and more attention of environmental problem, the discharge standard of organic gas is more and more stricter.Groove tank car or tank wagon entrucking are dropped a hint and reclaims, seem particularly necessary.Discharge again after recovery, can not only protection of the environment, reduce potential safety hazard, and the methyl alcohol obtained also can be utilized again.
Retrieved domestic and foreign databases according to the technology of the present invention feature, find that the patent that relevant methanol waste gas reclaims is less.Such as, Chinese patent CN102527073A describes a kind of adsorption-condensation combined oil gas recovery device to reclaim oil gas, and relating generally to theory is first adsorbed oil gas by adsorption tanks, then with condensation method process adsorption tanks regeneration gas.This invention weak point is: the method mainly utilizes absorption method process oil gas, can produce a large amount of heat of adsorption, and equipment runs exists safety problem.Patent CN104096452A provides a kind of cold oil pre-absorption absorption method petroleum vapor recovery technique, mainly utilize the hydrocarbon in absorption tower absorption oil gas, the Volatile Gas of absorbent and unabsorbed oil-gas transportation process further to containing in charcoal trap.This invention weak point is: the absorbent development difficulty used by the method is large, cost is high, be not suitable for methanol waste gas and reclaim, and absorption tower is taken up an area larger according to inconvenience.Through retrieval, also do not adopt the technology that " condensation+absorption " is integrated, efficient, low emission concentration reclaims methanol waste gas at present, this device can make skid-mounted type structure, is convenient to install and use.
Summary of the invention
The present invention for solve reclaim in methanol waste gas recovery system after directly cannot obtain methyl alcohol and the problem such as tail gas is not up to standard, develop a kind of methanol waste gas recovery system of Novel condensation-adsorbing integration technology, adopt " condensation+absorption " in integrated, efficient, the low emission concentration recovery system of one.Condensation method reduces mixture temperature, methanol vapor component in gaseous mixture is reached capacity state, obtains liquid methanol.The methyl alcohol gaseous mixture that part does not liquefy is by qualified discharge after absorption tower adsorbs, and the high concentration methanol vapour-cycling after enrichment gets back to condensing unit condensation.Circulation like this, collects storage tank by liquid methanol continuously, can directly be delivered to specified location in user or barrelling, completes the improvement to methanol vapor in entrucking process and recycling.
(1) technical scheme of the present invention is as follows:
A kind of methanol waste gas recovery system of Novel condensation-adsorbing integration technology comprises: the accessories such as blower fan, flowmeter, refrigeration system (heat exchanger, refrigerant tank, refrigerant pump, refrigeration compressor etc.), pressure sensor, temperature sensor, heat exchanger A, heat exchanger B, ball valve, liquid level gauge, recycling can, recovery pump, adsorption tower A, adsorption tower B, vavuum pump, self-priming concentration air hatch, control system, data acquisition process gas analysis work station, control valve, spark arrester and pipeline.
The blower fan of the methanol waste gas recovery system of 1. described a kind of Novel condensation-adsorbing integration technology is frequency conversion explosion proof blower fan, according to carrying out atmospheric pressure size, carrys out VFC blower fan by pressure sensor.
The flowmeter of the methanol waste gas recovery system of 2. described a kind of Novel condensation-adsorbing integration technology mainly records volume flow and the cumulative volume flow of gas.
The refrigeration system of the methanol waste gas recovery system of 3. described a kind of Novel condensation-adsorbing integration technology comprises: heat exchanger, refrigerant tank, refrigerant pump, refrigeration compressor.
Further, described refrigeration compressor is Refrigerating Compressor with Inverter, and it is by temperature VFC in heat exchanger B.
The methanol waste gas condensation process of the methanol waste gas recovery system of 4. described a kind of Novel condensation-adsorbing integration technology is mainly carried out in heat exchanger A and heat exchanger B, heat exchanger A mainly to from heat exchanger B out tail gas cold recycling, carry out gas to methanol waste gas and carry out precooling, heat exchanger B mainly carries out deep refrigerating to from heat exchanger A methanol waste gas out.
Further, temperature≤3 DEG C of methanol waste gas in heat exchanger B.
Further, the liquid methanol obtained in heat exchanger A, heat exchanger B is because potential difference is from flowing in recycling can.
The adsorption tower of the methanol waste gas recovery system of 5. described a kind of Novel condensation-adsorbing integration technology comprises: adsorption tower A and adsorption tower B, adsorption tower A, adsorption tower B by control valve switch operating, can ensure the continuity of system.
Further, described adsorption tower height is 1m ~ 10m, and diameter is 0.5m ~ 2.5m.
Further, described adsorption tower main body arranges temperature sensor, pressure sensor.
Further, in described adsorption tower A, adsorption tower B, adsorbent is optional: active carbon, silica gel, dewatering silica gel, AdsFOV-II, zeolite, compound adsorbent etc.
The vavuum pump of the methanol waste gas recovery system of 6. described a kind of Novel condensation-adsorbing integration technology is dry type frequency conversion vavuum pump, and it is by pressure VFC in adsorption tower A, adsorption tower B.
The recovery pump of the methanol waste gas recovery system of 7. described a kind of Novel condensation-adsorbing integration technology is frequency conversion explosion proof recovery pump, and it is by recycling can liquid level VFC.
Methanol waste gas can realize methanol waste gas concentration < 50mg/m by said system
3qualified discharge is (as " petro chemical industry pollutant emission standard " GB31571-2015 requires tail gas methanol concentration < 50mg/m
3).
(2) in the methanol waste gas recovery system of a kind of Novel condensation-adsorbing integration technology, each equipment connection is described below:
1. scene is carried out gas (from the methanol-air gaseous mixture that the process such as groove tank car or tank wagon entrucking emptying produces, gas flow is 200Nm
3/ h ~ 1500Nm
3/ h, gas temperature is normal temperature (environment temperature)) collecting pipe be connected with heat exchanger A air inlet.
2. heat exchanger A gas outlet is connected with heat exchanger B air inlet, and heat exchanger B gas outlet is connected with the import of heat exchanger A heat exchange pipeline, and the outlet of heat exchanger A heat exchange pipeline is connected with adsorption tower A, adsorption tower B bottom air inlet.
3. adsorption tower A, gas outlet, adsorption tower B top are connected with tail gas exhausting pipeline.
4. adsorption tower A, adsorption tower B bottom line are connected with air-inlet of vacuum pump, vavuum pump gas outlet with carry out gas gas gathering line and be connected.
5. refrigeration system is connected with heat exchanger B.
6. heat exchanger A, heat exchanger B liquid outlet are connected with recycling can inlet.
7. recycling can liquid outlet is connected with recovery pump import.
8. nitrogen inlet duct line is connected with adsorption tower A, adsorption tower B overhead line.
(3) a kind of recovery method of methanol waste gas recovery system of Novel condensation-adsorbing integration technology
1. refrigeration system is opened, on-the-spot methanol waste gas carrys out gas and enter air inlet pipe under frequency conversion fan effect, heat exchanger A is entered through spark arrester, pressure sensor, self-priming concentration air hatch, control valve, flowmeter, the precooling in heat exchanger A of methyl alcohol mist, precooling process can produce a small amount of liquid methanol, methyl alcohol mist after precooling enters heat exchanger B and carries out subzero treatment, the a large amount of methanol vapor of deep cooling process reaches capacity state, and in most of methyl alcohol mist, methyl alcohol component liquefaction becomes liquid methanol.From heat exchanger B entering heat exchanger A heat exchange pipeline and methanol waste gas containing the mist of a small amount of methyl alcohol and carry out gas and carry out heat exchange out, from heat exchanger A heat exchange pipeline out containing the mist of a small amount of methyl alcohol through control valve, enter adsorption tower A (or adsorption tower B) bottom air inlet, a small amount of methyl alcohol component in mist in adsorption tower A (or adsorption tower B) by adsorption treatment, tail gas (air) after process from adsorption tower A (or adsorption tower B) top through self-priming concentration air hatch, control valve, flowmeter, spark arrester is up to standard after entering blow-down pipe enters air.
2. after due to adsorption tower A (or adsorption tower B) adsorption penetration, open the control valve that adsorption tower B (or adsorption tower A) is connected with heat exchanger A, open the control valve that adsorption tower B (or adsorption tower A) is connected with blow-down pipe, close the control valve that adsorption tower A (or adsorption tower B) is connected with heat exchanger A, close the control valve that adsorption tower A (or adsorption tower B) is connected with blow-down pipe, be namely switched to adsorption tower B (or adsorption tower A) and adsorb.Simultaneously, open the control valve that adsorption tower A (or adsorption tower B) is connected with vavuum pump, start vavuum pump, (10 ~ 60min, concrete desorption time adjusts according to during debugging again, determines to make adsorption tower A (or adsorption tower B) solution be drawn onto setting-up time.), the gas of solution sucking-off is delivered in gas discharge and is continued to be processed.In addition when vavuum pump runs last 5 ~ 10min, open the control valve that adsorption tower A (or adsorption tower B) is connected with nitrogen tube, pass into nitrogen and promote desorb.After vavuum pump quits work, close the control valve that adsorption tower A (or adsorption tower B) is connected with vavuum pump, continue to pass into nitrogen until adsorption tower A (or adsorption tower B) interior pressure is after normal pressure, close the control valve that adsorption tower A (or adsorption tower B) is connected with nitrogen tube.
(4) technique effect of the present invention is:
1. the present invention adopts " condensation+absorption " in integrated, efficient, the low emission concentration recovery system of one, in conjunction with two kinds of recovery method advantages, methyl alcohol directly cannot be obtained and the problem such as tail gas is not up to standard after solving recovery, and overcome because adsorption density is large, the problems such as the heat of adsorption caused, improve security performance, extend the life-span of adsorbent.
2. after the present invention is directed to condensation, the cold of tail gas recycles, and carrys out the precooling of gas, improves energy ecology, reduce energy consumption for methanol waste gas.
3. the present invention adopts two adsorption towers, by control valve switch operating, can ensure that the continuity of system.
4. many places of the present invention adopt frequency conversion equipment, effectively reduce energy consumption further.
5. in removal process of the present invention, concentration, temperature, flow and pressure all carry out online acquisition, line analysis is stood in by data acquisition process and gas analytical work, instruct and when carry out gas collection, condensation, absorption and desorption operations, and utilize automatic controlling system gas collection, condensation, absorption and desorption operations.
Accompanying drawing explanation
The methanol waste gas recovery system process chart of accompanying drawing 1 one kinds of Novel condensation-adsorbing integration technologies
Reference numeral lists as follows:
1, 47-spark arrester, 2, 27, 36-pressure sensor, 3, 20, 35, 40-self-priming concentration air hatch, 4, 5, 14, 16, 26, 29, 30, 32, 34, 38, 39, 42, 43, 44-control valve, 6-blower fan, 7, 46-flowmeter, 8-refrigeration system, 9, 12, 21, 28, 37-temperature sensor, 10-heat exchanger A, 11, 17-heat exchanger, 13-refrigerant tank, 15-refrigerant pump, 18-refrigeration compressor, 19-heat exchanger B, 22, 24-ball valve, 23-liquid level gauge, 25-recycling can, 31-adsorption tower A, 33-recovery pump, 41-adsorption tower B, 45-vavuum pump, 48-control system, 49-data acquisition process gas analysis work station.
Detailed description of the invention
Be described further below in conjunction with accompanying drawing 1 pair of embodiments of the invention, but the present invention is not by the restriction of embodiment:
On-the-spot methanol waste gas carrys out gas, and (from the methanol-air gaseous mixture that the processes such as groove tank car or tank wagon entrucking emptying produce, gas flow is 800Nm
3/ h, gas temperature is normal temperature (environment temperature)) be recovered after, require to obtain liquid methanol, and tail gas concentration < 50mg/m
3, utilize technical solution of the present invention to reclaim it, utilize accompanying drawing 1 to be described.
(1) a kind of methanol waste gas recovery system of Novel condensation-adsorbing integration technology comprises: blower fan 6, flowmeter 7, 46, refrigeration system 8 (heat exchanger 11, 17, refrigerant tank 13, refrigerant pump 15, refrigeration compressor 18 etc.), pressure sensor 2, 27, 36, temperature sensor 9, 12, 21, 28, 37, heat exchanger A10, heat exchanger B19, ball valve 22, 24, liquid level gauge 23, recycling can 25, recovery pump 33, adsorption tower A31, adsorption tower B41, vavuum pump 45, self-priming concentration air hatch 3, 20, 35, 40, control system 48, data acquisition process gas analysis work station 49, control valve 4, 5, 14, 16, 26, 29, 30, 32, 34, 38, 39, 42, 43, 44, spark arrester 1, the accessory such as 47 and pipeline.
The blower fan 6 of the methanol waste gas recovery system of 1. described a kind of Novel condensation-adsorbing integration technology is frequency conversion explosion proof blower fan, according to carrying out atmospheric pressure size, carrys out VFC blower fan 6 by pressure sensor.
The flowmeter 7,46 of the methanol waste gas recovery system of 2. described a kind of Novel condensation-adsorbing integration technology mainly records volume flow and the cumulative volume flow of gas.
The refrigeration system 8 of the methanol waste gas recovery system of 3. described a kind of Novel condensation-adsorbing integration technology comprises: heat exchanger 11,17, refrigerant tank 13, refrigerant pump 15, refrigeration compressor 18.
Further, described refrigeration compressor 18 is Refrigerating Compressor with Inverter, and it is by temperature VFC in heat exchanger B19.
The methanol waste gas condensation process of the methanol waste gas recovery system of 4. described a kind of Novel condensation-adsorbing integration technology is mainly carried out in heat exchanger A10 and heat exchanger B19, heat exchanger A10 mainly to from heat exchanger B19 out tail gas cold recycling, carry out gas to methanol waste gas and carry out precooling, heat exchanger B19 mainly carries out deep refrigerating to from heat exchanger A10 methanol waste gas out.
Further, temperature≤3 DEG C of methanol waste gas in heat exchanger B19.
Further, the liquid methanol obtained in heat exchanger A10, heat exchanger B19 is because potential difference is from flowing in recycling can 25.
The adsorption tower of the methanol waste gas recovery system of 5. described a kind of Novel condensation-adsorbing integration technology comprises: adsorption tower A31 and adsorption tower B41, adsorption tower A31, adsorption tower B41 by control valve switch operating, can ensure the continuity of system.
Further, described adsorption tower A31, adsorption tower B41 are highly 6m, and diameter is 1.5m.
Further, described adsorption tower A31, adsorption tower B41 main body arrange temperature sensor 28,37 and pressure sensor 27,36.
Further, in described adsorption tower A31, adsorption tower B41, adsorbent is AdsFOV-II.
The vavuum pump 45 of the methanol waste gas recovery system of 6. described a kind of Novel condensation-adsorbing integration technology is dry type frequency conversion vavuum pump, and it is by pressure VFC in adsorption tower A31, adsorption tower B41.
The recovery pump 33 of the methanol waste gas recovery system of 7. described a kind of Novel condensation-adsorbing integration technology is frequency conversion explosion proof recovery pump, and it is by recycling can 25 liquid level VFC.
Methanol waste gas can realize methanol waste gas concentration < 50mg/m by said system
3qualified discharge is (as " petro chemical industry pollutant emission standard " GB31571-2015 requires tail gas methanol concentration < 50mg/m
3).
(2) in the methanol waste gas recovery system of a kind of Novel condensation-adsorbing integration technology, each equipment connection is described below:
1. scene is carried out gas (from the methanol-air gaseous mixture that the process such as groove tank car or tank wagon entrucking emptying produces, gas flow is 800Nm
3/ h, gas temperature is normal temperature (environment temperature)) collecting pipe be connected with heat exchanger A10 air inlet.
2. heat exchanger A10 gas outlet is connected with heat exchanger B19 air inlet, and heat exchanger B19 gas outlet is connected with the import of heat exchanger A10 heat exchange pipeline, and the outlet of heat exchanger A10 heat exchange pipeline is connected with adsorption tower A31, adsorption tower B41 bottom air inlet.
3. adsorption tower A31, gas outlet, adsorption tower B41 top are connected with tail gas exhausting pipeline.
4. adsorption tower A31, adsorption tower B41 bottom line are connected with vavuum pump 45 air inlet, vavuum pump 45 gas outlet with carry out gas gas gathering line and be connected.
5. refrigeration system 8 is connected with heat exchanger B19.
6. heat exchanger A10, heat exchanger B19 liquid outlet are connected with recycling can 25 inlet.
7. recycling can 25 liquid outlet is connected with recovery pump 33 import.
8. nitrogen inlet duct line is connected with adsorption tower A31, adsorption tower B41 overhead line.
(3) a kind of recovery method of methanol waste gas recovery system of Novel condensation-adsorbing integration technology is:
1. refrigeration system 8 is opened, on-the-spot methanol waste gas carrys out gas and enter air inlet pipe under frequency conversion fan 6 acts on, heat exchanger A10 is entered through spark arrester 1, pressure sensor 2, self-priming concentration air hatch 3, control valve 5, flowmeter 7, the precooling in heat exchanger A10 of methyl alcohol mist, precooling process can produce a small amount of liquid methanol, methyl alcohol mist after precooling enters heat exchanger B19 and carries out subzero treatment, the a large amount of methanol vapor of deep cooling process reaches capacity state, and in most of methyl alcohol mist, methyl alcohol component liquefaction becomes liquid methanol.From heat exchanger B19 entering heat exchanger A10 heat exchange pipeline and methanol waste gas containing the mist of a small amount of methyl alcohol and carry out gas and carry out heat exchange out, from heat exchanger A10 heat exchange pipeline out containing the mist of a small amount of methyl alcohol through control valve 32 (or 42), enter adsorption tower A31 (or adsorption tower B41) bottom air inlet, a small amount of methyl alcohol component in mist in adsorption tower A31 (or adsorption tower B41) by adsorption treatment, tail gas (air) after process from adsorption tower A31 (or adsorption tower B41) top through self-priming concentration air hatch 35 (or 40), control valve 30 (or 39), flowmeter 46, spark arrester 47 is up to standard after entering blow-down pipe enters air.
2. after due to adsorption tower A31 (or adsorption tower B41) adsorption penetration, open the control valve 42 (or 32) that adsorption tower B41 (or adsorption tower A31) is connected with heat exchanger A10, open the control valve 39 (or 30) that adsorption tower B41 (or adsorption tower A31) is connected with blow-down pipe, close the control valve 32 (or 42) that adsorption tower A31 (or adsorption tower B41) is connected with heat exchanger A10, close the control valve 30 (or 39) that adsorption tower A31 (or adsorption tower B41) is connected with blow-down pipe, namely be switched to adsorption tower B41 (or adsorption tower A31) to adsorb.Simultaneously, open the control valve 38 (or 43) that adsorption tower A31 (or adsorption tower B41) is connected with vavuum pump 45, start vavuum pump 45, (10 ~ 60min, concrete desorption time adjusts according to during debugging again, determines to make adsorption tower A31 (or adsorption tower B41) solution be drawn onto setting-up time.), the gas of solution sucking-off is delivered in gas discharge and is continued to be processed.In addition when vavuum pump 45 runs last 5 ~ 10min, open the control valve 26 (or 34) that adsorption tower A31 (or adsorption tower B41) is connected with nitrogen tube, pass into nitrogen and promote desorb.After vavuum pump 45 quits work, close the control valve 38 (or 43) that adsorption tower A31 (or adsorption tower B41) is connected with vavuum pump 45, continue to pass into nitrogen until adsorption tower A31 (or adsorption tower B41) interior pressure is after normal pressure, close the control valve 26 (or 34) that adsorption tower A31 (or adsorption tower B41) is connected with nitrogen tube.
Claims (10)
1. the methanol waste gas recovery system of Novel condensation-adsorbing integration technology, it is characterized in that: this system is by blower fan (6), flowmeter (7, 46), refrigeration system (8), pressure sensor (2, 27, 36), temperature sensor (9, 12, 21, 28, 37), heat exchanger A (10), heat exchanger B (19), ball valve (22, 24), liquid level gauge (23), recycling can (25), recovery pump (33), adsorption tower A (31), adsorption tower B (41), vavuum pump (45), self-priming concentration air hatch (3, 20, 35, 40), control system (48), data acquisition process gas analysis work station (49), control valve (4, 5, 14, 16, 26, 29, 30, 32, 34, 38, 39, 42, 43, 44), spark arrester (1, 47) and the accessory such as pipeline composition.
2. each equipment connection of the methanol waste gas recovery system of a kind of Novel condensation-adsorbing integration technology as claimed in claim 1, it is characterized in that: the collecting pipe that gas is carried out at scene is connected with heat exchanger A (10) air inlet, heat exchanger A (10) gas outlet is connected with heat exchanger B (19) air inlet, heat exchanger B (19) gas outlet is connected with heat exchanger A (10) heat exchange pipeline import, the outlet of heat exchanger A (10) heat exchange pipeline and adsorption tower A (31), adsorption tower B (41) bottom air inlet connects, adsorption tower A (31), adsorption tower B (41) gas outlet, top is connected with tail gas exhausting pipeline, adsorption tower A (31), adsorption tower B (41) bottom line is connected with vavuum pump (45) air inlet, vavuum pump (45) gas outlet with carry out gas gas gathering line and be connected, refrigeration system (8) is connected with heat exchanger B (19), heat exchanger A (10), heat exchanger B (19) liquid outlet is connected with recycling can (25) inlet, recycling can (25) liquid outlet is connected with recovery pump (33) import, nitrogen inlet duct line and adsorption tower A (31), adsorption tower B (41) overhead line connects.
3. the recovery method of the methanol waste gas recovery system of Novel condensation-adsorbing integration technology, it is characterized in that: refrigeration system (8) is opened, on-the-spot methanol waste gas carrys out gas and enter air inlet pipe under frequency conversion fan (6) effect, after entering heat exchanger A (10) again, the precooling in heat exchanger A (10) of methyl alcohol mist, precooling process can produce a small amount of liquid methanol, methyl alcohol mist after precooling enters heat exchanger B (19) and carries out subzero treatment, in major part methyl alcohol mist, methyl alcohol component liquefaction becomes liquid methanol, from heat exchanger B (19) entering heat exchanger A (10) heat exchange pipeline and methanol waste gas containing the mist of a small amount of methyl alcohol and carry out gas and carry out heat exchange out, from heat exchanger A (10) heat exchange pipeline out enter adsorption tower A (31) or adsorption tower B (41) bottom air inlet containing the mist of a small amount of methyl alcohol, a small amount of methyl alcohol component in mist in adsorption tower A (31) or adsorption tower B (41) by adsorption treatment, tail gas (air) after process is up to standard after entering blow-down pipe from adsorption tower A (31) or adsorption tower B (41) top enters air, after due to adsorption tower A (31) or adsorption tower B (41) adsorption penetration, open control valve (42) or control valve (32) that adsorption tower B (41) or adsorption tower A (31) is connected with heat exchanger A (10), open control valve (39) or control valve (30) that adsorption tower B (41) or adsorption tower A (31) is connected with blow-down pipe, the control valve (32) that closedown adsorption tower A (31) or adsorption tower B (41) are connected with heat exchanger A (10) or control valve (42), the control valve (30) that closedown adsorption tower A (31) or adsorption tower B (41) are connected with blow-down pipe or control valve (39), namely adsorption tower B (41) is switched to or adsorption tower A (31) adsorbs, simultaneously, open control valve (38) or control valve (43) that adsorption tower A (31) or adsorption tower B (41) is connected with vavuum pump (45), start vavuum pump (45), adsorption tower A (31) or adsorption tower B (41) solution is made to be drawn onto setting-up time (10 ~ 60min, concrete desorption time adjusts according to during debugging again, determine.), the gas of solution sucking-off is delivered in gas discharge and is continued to be processed, in addition when vavuum pump (45) runs last 5 ~ 10min, open control valve (26) or control valve (34) that adsorption tower A (31) or adsorption tower B (41) is connected with nitrogen tube, pass into nitrogen and promote desorb, after vavuum pump (45) quits work, the control valve (38) that closedown adsorption tower A (31) or adsorption tower B (41) are connected with vavuum pump (45) or control valve (43), continue to pass into nitrogen until adsorption tower A (31) or adsorption tower B (41) interior pressure are after normal pressure, the control valve (26) that closedown adsorption tower A (31) or adsorption tower B (41) are connected with nitrogen tube or control valve (34).
4. blower fan (6) as claimed in claim 1, is characterized in that: blower fan (6) is frequency conversion explosion proof blower fan, according to carrying out atmospheric pressure size, carrying out VFC blower fan (6) by pressure sensor.
5. flowmeter (7,46) as claimed in claim 1, is characterized in that: flowmeter (7,46) mainly records volume flow and the cumulative volume flow of gas.
6. refrigeration system (8) as claimed in claim 1, it is characterized in that: refrigeration system (8) comprises heat exchanger (11,17), refrigerant tank (13), refrigerant pump (15), refrigeration compressor (18) etc., wherein refrigeration compressor (18) is Refrigerating Compressor with Inverter, and it is by the interior temperature VFC of heat exchanger B (19).
7. the methanol waste gas condensation process of the methanol waste gas recovery system of Novel condensation-adsorbing integration technology, it is characterized in that: condensation process is mainly carried out in heat exchanger A (10) and heat exchanger B (19), heat exchanger A (10) is mainly to from heat exchanger B (19) tail gas cold recycling out, gas is come to methanol waste gas and carries out precooling, heat exchanger B (19) mainly carries out deep refrigerating to from heat exchanger A (10) methanol waste gas out, temperature≤3 DEG C of heat exchanger B (19) interior methanol waste gas, in heat exchanger A (10), the liquid methanol obtained in heat exchanger B (19) is because potential difference is from flowing in recycling can (25).
8. adsorption tower as claimed in claim 1, it is characterized in that: adsorption tower comprises adsorption tower A (31) and adsorption tower B (41), adsorption tower A (31), adsorption tower B (41) can by control valve switch operating, the continuity of guarantee system, adsorption tower A (31), adsorption tower B (41) is highly 1m ~ 10m, diameter is 0.5m ~ 2.5m, adsorption tower A (31), adsorption tower B (41) main body arranges temperature sensor (28, 37) and pressure sensor (27, 36), adsorption tower A (31), adsorption tower B (41) interior adsorbent is optional: active carbon, silica gel, dewatering silica gel, AdsFOV-II, zeolite, compound adsorbent etc.
9. vavuum pump (45) as claimed in claim 1, it is characterized in that: vavuum pump (45) is dry type frequency conversion vavuum pump, it is by adsorption tower A (31), the interior pressure VFC of adsorption tower B (41).
10. recovery pump (33) as claimed in claim 1, is characterized in that: recovery pump (33) is frequency conversion explosion proof recovery pump, and it is by recycling can (25) liquid level VFC.
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| CN110124443A (en) * | 2019-05-24 | 2019-08-16 | 浩辰弘明（北京）科技有限公司 | A kind of organic exhaust gas recycling and reusing device and method |
| CN110270191A (en) * | 2019-07-23 | 2019-09-24 | 中国恩菲工程技术有限公司 | The exhaust treatment system of tank field and loading system |
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