CN205199253U - Benzene series thing oil gas absorbs adsorption catalysis burning recovery unit - Google Patents
Benzene series thing oil gas absorbs adsorption catalysis burning recovery unit Download PDFInfo
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- CN205199253U CN205199253U CN201521063035.6U CN201521063035U CN205199253U CN 205199253 U CN205199253 U CN 205199253U CN 201521063035 U CN201521063035 U CN 201521063035U CN 205199253 U CN205199253 U CN 205199253U
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Abstract
The utility model provides a benzene series thing oil gas absorbs adsorption catalysis burning recovery unit which the technical essential is: first oil -poor pump of first absorption tower top intercommunication and absorption conveying line, bottom intercommunication oil gas input pipeline and first rich oil pump, the portion and the second adsorption tanks bottom of adsorbing the first adsorption tanks of conveying line intercommunication, first tourie top and second tourie top are through reaction of combustion conveying line even ohmic heating ware entry, electric heater export intercommunication catalytic combustion reactor entry, catalytic combustion reactor outlet intercommunication heat exchanger entry, the fan is ohmic heating ware entry even, desorption pipeline intercommunication vacuum pump inlet end, the vacuum pump is given vent to anger and is held intercommunication second absorption tower, second absorption tower top intercommunication adsorbs conveying line and the oil -poor pump of second, second absorption tower bottom intercommunication second rich oil pump. The utility model discloses put into the atmosphere with benzene series thing oil gas through absorption, absorption and catalytic combustion reaction back row, only contain CO2 and H2O in the tail gas that discharges, realized pollution -freeization of exhaust emissions.
Description
Technical field:
The utility model relates to benzene homologues petroleum vapor recovery and the discharge fields such as petrochemical industry, pharmaceuticals industry, paint, is specifically related to a kind of benzene homologues oil gas absorbing adsoption catalysis burning retracting device.
Background technology:
In the storage, cargo handling process of the production of benzene homologues industrial goods, inevitably have small part benzene homologues to evaporate in air, can cause serious environmental pollution, this benzene homologues pollutant causes great harm to the growth of animal and plant and human health.
In recent decades, people's invention multiple technologies reclaim this part oil gas.Charcoal absorption, desorb, absorption tower absorption recovery oil gas technology are one of methods commonly used in these technology, and the tail gas planted agent that then existing retracting device finally discharges exists a large amount of toxic gases, the extremely difficult meet the requirement of environmental protection of exhaust emissions concentration limit.
Summary of the invention:
The utility model is for overcoming the deficiencies in the prior art, and provide a kind of benzene homologues oil gas absorbing adsoption catalysis burning retracting device, benzene homologues oil gas is drained into air by it after absorption and sorption and catalyst combustion reaction, only containing CO in the tail gas discharged
2and H
2o, achieves pollution-freeization of exhaust emissions.
Benzene homologues oil gas absorbing adsoption catalysis burning retracting device of the present utility model, technical scheme adopted for achieving the above object is: comprise the first absorption tower, second absorption tower, first adsorption tanks, second adsorption tanks, catalytic combustion reactor and blower fan, the top on described first absorption tower is communicated with the first oil-poor pump and absorption transfer pipeline respectively, the bottom on the first absorption tower is communicated with oil gas intake line and the first rich oil pump respectively, absorption transfer pipeline is communicated with the bottom of the first adsorption tanks and the bottom of the second adsorption tanks respectively by two branch lines, the top of the first tourie and the top of the second tourie are respectively by pipeline connection combustion reaction transfer pipeline, combustion reaction transfer pipeline is communicated with the top entry of electric heater, the outlet at bottom of electric heater is communicated with the bottom inlet of catalytic combustion reactor, the top exit of catalytic combustion reactor is communicated with the top entry of heat exchanger, blower fan is communicated with the top entry of electric heater by the first air inlet pipeline, the inlet end of the desorb pipeline connection vavuum pump between the branch line bottom the branch line bottom the first adsorption tanks and the second adsorption tanks, the outlet side of vavuum pump is communicated with second absorption tower, the top of second absorption tower is communicated with absorption transfer pipeline and the second oil-poor pump respectively, the bottom of second absorption tower is communicated with the second rich oil pump, oil gas intake line is provided with oil and gas switch valve, branch line bottom first adsorption tanks is provided with the first absorption intake valve, branch line bottom second adsorption tanks is provided with the second absorption intake valve, the top pipeline of the first adsorption tanks is provided with the first absorption air outlet valve, the top pipeline of the second adsorption tanks is provided with the second absorption air outlet valve, one end near the first adsorption tanks on desorb pipeline is provided with the first switching control valve, one end near the second adsorption tanks on desorb pipeline is provided with the second switching control valve, first air inlet pipeline is provided with the first air inlet adjustment valve.
As a further improvement on the present invention, described combustion reaction transfer pipeline is communicated with the bottom inlet line of heat exchanger, the top exit pipeline of heat exchanger is communicated with the top entry of electric heater, utilize the remaining temperature of Exhaust Gas in heat exchanger to carry out preheating to mixed oil and gas, thus save the energy ezpenditure of electric heater.
As a further improvement on the present invention, described blower fan is communicated with burning intake line by the second air inlet pipeline, second air inlet pipeline is provided with the second air inlet adjustment valve, and the air carried by blower fan is diluted mixed oil and gas, to blast phenomenon to avoid mixed oil and gas because of excessive concentration.
As a further improvement on the present invention, described combustion reaction transfer pipeline is provided with absorption and gives vent to anger concentration detector and combustion flow gauge, is used for detecting concentration and the flow of mixed oil and gas, prevents that mixed oil and gas flow is excessive, excessive concentration and phenomenon of blasting.
As a further improvement on the present invention, described first air inlet pipeline is provided with the first inlet air flow gauge, is used for detecting institute and transmits the flow of air, thus the air capacity that adjustment enters in catalytic combustion reactor.
As a further improvement on the present invention, described second air inlet pipeline is provided with the second inlet air flow gauge, is used for detecting institute and transmits the flow of air, thus the diluted concentration of adjustment to mixed oil and gas.
As a further improvement on the present invention, the pipeline after described combustion reaction transfer pipeline and the second air inlet pipeline cross is provided with burning charge concentration detector, is used for the concentration of mixed oil and gas after detecting dilution.
As a further improvement on the present invention, the first pressure sensor is provided with in the bottom of described first adsorption tanks, the second pressure sensor is provided with in the bottom of the second adsorption tanks, the pressure in two adsorption tanks is detected by two pressure sensors, stop operation when the pressure in one of them adsorption tanks is excessive, and be switched to another adsorption tanks and carry out adsorption operation.
As a further improvement on the present invention, the first adsorption temp sensor is provided with in described first adsorption tanks, be provided with the second adsorption temp sensor in second adsorption tanks, detected the temperature in two adsorption tanks by two temperature sensors, in order to avoid the too high phenomenon of blasting of temperature.
As a further improvement on the present invention, in described electric heater, be provided with heating temperature sensor, be used for detecting the heating-up temperature of mixed oil and gas; The top of described catalytic combustion reactor, middle part and bottom are respectively equipped with combustion reaction temperature sensor, to be used for detecting in burning reflection process temperature everywhere in reactor.
The beneficial effects of the utility model are: the utility model carries out primary cyclic absorption process by the first absorption tower to mixed oil and gas, benzene homologues major part wherein absorb by spray liquid, small part benzene homologues and light hydrocarbon component be after absorption transfer pipeline enters and carries out charcoal absorption in the first adsorption tanks, again through combustion reaction transfer pipeline enter preheating in heat exchanger, again heater via heating after enter in catalytic combustion reactor with air generation oxidation reaction, through oxidation reaction produce CO
2and H
2o enters air after finally being cooled by heat exchanger, thus benzene homologues oil gas is drained into air after absorption and sorption and catalyst combustion reaction, only containing CO in the tail gas discharged
2and H
2o, achieves pollution-freeization of exhaust emissions.Wherein, when the first adsorption tanks absorption reaches rated value, mixed oil and gas is switched to the second adsorption tanks and carries out adsorption treatment, start vavuum pump simultaneously and desorb is carried out to the first adsorption tanks, mixed oil and gas suction second absorption tower is carried out secondary cyclic absorption process, wherein most benzene homologues still absorb by spray liquid, small part benzene homologues and light hydrocarbon component still enter in the second adsorption tanks through absorption transfer pipeline, when the second adsorption tanks absorption reaches rated value, by mixed oil and gas again switchback first adsorption tanks carry out adsorption treatment, circulation like this reduces the benzene homologues in mixed oil and gas.Moreover, introduce air by blower fan and the mixed oil and gas in combustion reaction transfer pipeline is diluted, to prevent mixed oil and gas to blast because of excessive concentration phenomenon, improve the security of use.In addition, the port of export of combustion reaction transfer pipeline connects heat exchanger, and the remaining temperature making mist first utilize heat exchanger institute to discharge tail gas carries out preheating, and then enters heating in electric heater, thus saving heating energy source.
Accompanying drawing illustrates:
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention:
With reference to Fig. 1, this benzene homologues oil gas absorbing adsoption catalysis burning retracting device, comprise the first absorption tower 1, second absorption tower 14, first adsorption tanks 5, second adsorption tanks 6, catalytic combustion reactor 27 and blower fan 20, the top on described first absorption tower 1 is communicated with the first oil-poor pump 3 and absorption transfer pipeline 29 respectively, the bottom on the first absorption tower 1 is communicated with oil gas intake line 28 and the first rich oil pump 4 respectively, absorption transfer pipeline 29 is communicated with the bottom of the first adsorption tanks 5 and the bottom of the second adsorption tanks 6 respectively by two branch lines, the top of the first tourie 5 and the top of the second tourie 6 are respectively by pipeline connection combustion reaction transfer pipeline 30, described combustion reaction transfer pipeline 30 is communicated with the bottom inlet line of heat exchanger 25, the top exit pipeline of heat exchanger 25 is communicated with the top entry of electric heater 26, the outlet at bottom of electric heater 26 is communicated with the bottom inlet of catalytic combustion reactor 27, the top exit of catalytic combustion reactor 27 is communicated with the top entry of heat exchanger 25, blower fan 20 is communicated with the top entry of electric heater 26 by the first air inlet pipeline 32, burning intake line 30 is communicated with by the second air inlet pipeline 33, desorb pipeline 31 between branch line bottom branch line bottom first adsorption tanks 5 and the second adsorption tanks 6 is communicated with the inlet end of vavuum pump 13, the outlet side of vavuum pump 13 is communicated with second absorption tower 14, the top of second absorption tower 14 is communicated with absorption transfer pipeline 29 and the second oil-poor pump 15 respectively, the bottom of second absorption tower 14 is communicated with the second rich oil pump 16, oil gas intake line 28 is provided with oil and gas switch valve 2, branch line bottom first adsorption tanks 5 is provided with the first absorption intake valve 7, branch line bottom second adsorption tanks 6 is provided with the second absorption intake valve 8, the top pipeline of the first adsorption tanks 5 is provided with the first absorption air outlet valve 9, the top pipeline of the second adsorption tanks 6 is provided with the second absorption air outlet valve 10, one end near the first adsorption tanks 5 on desorb pipeline 31 is provided with the first switching control valve 11, one end near the second adsorption tanks 6 on desorb pipeline 31 is provided with the second switching control valve 12, first air inlet pipeline 32 is provided with the first air inlet adjustment valve 24 and the first inlet air flow gauge 23, second air inlet pipeline 33 is provided with the second air inlet adjustment valve 21 and the second inlet air flow gauge 22, described combustion reaction transfer pipeline 30 is provided with absorption and gives vent to anger concentration detector 17 and combustion flow gauge 18, pipeline after combustion reaction transfer pipeline 30 and the second air inlet pipeline 33 cross is provided with burning charge concentration detector 19, the first pressure sensor 5-1 is provided with in the bottom of described first adsorption tanks 5, the second pressure sensor 6-1 is provided with in the bottom of the second adsorption tanks 6, the first adsorption temp sensor 5-2 is provided with in described first adsorption tanks 5, the second adsorption temp sensor 6-2 is provided with in second adsorption tanks 6, heating temperature sensor 26-1 is provided with in described electric heater 26, the top of described catalytic combustion reactor 27, middle part and bottom are respectively equipped with combustion reaction temperature sensor 27-1.
The course of work of present embodiment is described below by Four processes:
1, first time absorption process
Open oil and gas switch valve 2, benzene homologues oil gas enters into the first absorption tower 1 by transportation pipeline 28, oil gas flows from the tower reactor on the first absorption tower 1 to tower top, contact in screen waviness regular packing with the spray liquid sent here by the first oil-poor pump 3 that tower gets off, and carried out mass transfer exchange, benzene homologues major part is absorbed by spray liquid and falls tower reactor sends storage tank back to by rich oil pump 4, the first oil-poor pump 3 and the first rich oil pump 4 cycling.
2, adsorption process
Containing a small amount of benzene homologues and light hydrocarbon component in the oil gas on the first tower top place, absorption tower 1, this a little mixed oil and gas enters absorption transfer pipeline 29, open the first absorption intake valve 7, oil gas enters after the first adsorption tanks 5 are tightly held by activated carbon, open the first absorption air outlet valve 9, remain micro-benzene homologues and lighter hydrocarbons enter catalyticing combustion process through combustion reaction transfer pipeline 30.When the first adsorption tanks 5 absorption reaches rated value, close the first absorption intake valve 7, open the second absorption intake valve 8, be switched to the second adsorption tanks 6 to adsorb, open the first switching control valve 11 simultaneously, starting vavuum pump 13 sucks in second absorption tower 14 by the oil gas in the first adsorption tanks 5, when oil gas enters after the second adsorption tanks 6 are tightly held by activated carbon through the second absorption intake valve 8, open the first absorption air outlet valve 10, remain micro-benzene homologues and lighter hydrocarbons enter catalyticing combustion process through combustion reaction transfer pipeline 30.When the second tourie 6 absorption reaches rated value, then switch back to the first adsorption tanks 5 cycling, open the second switching control valve 12 simultaneously, start vavuum pump 13 and the oil gas in second adsorption tanks 6 is sucked in second absorption tower 4.
3, second time absorption process
Oil gas in first adsorption tanks 5 and the second adsorption tanks 6 is pumped into after in second absorption tower 14 through vavuum pump 13, oil gas flows from the tower reactor of second absorption tower 14 to tower top, contact in screen waviness regular packing with the spray liquid sent here by the second oil-poor pump 15 that tower gets off, and carried out mass transfer exchange, oil gas major part is fallen tower reactor by spray liquid absorption and is sent storage tank back to by the second rich oil pump 16, second oil-poor pump 15 and the second rich oil pump 16 cycling, a small amount of oil gas at second absorption tower 14 tower top place enters absorption transfer pipeline 29.
4, catalyticing combustion process
Open the first air inlet adjustment valve 24, extraneous air is sent into after electric heater is heated to design temperature through the first air inlet pipeline 32 and is entered in catalytic combustion reactor 27 by startup blower fan 20, closes the first air inlet adjustment valve 24 after catalyst layer bed is preheating to design temperature.Meanwhile, open the second air inlet adjustment valve 21, extraneous air is sent in combustion reaction transfer pipeline 30 through the second air inlet pipeline 33 by blower fan 20, the mixed oil and gas of higher concentration in it is diluted, mixed oil and gas after dilution enters in electric heater 26 through heat exchanger 25 and heats, entered in catalytic combustion reactor 27 by the mixed oil and gas after heating, in catalytic bed, mixed oil and gas oxidation by air generates CO
2and H
2after O, out enter the tube side top of heat exchanger 25 from the top of catalytic combustion reactor 27, after heat exchanger 25 is lowered the temperature, enter air.
Claims (10)
1. a benzene homologues oil gas absorbing adsoption catalysis burning retracting device, it is characterized in that: comprise the first absorption tower (1), second absorption tower (14), first adsorption tanks (5), second adsorption tanks (6), catalytic combustion reactor (27) and blower fan (20), the top of described first absorption tower (1) is communicated with the first oil-poor pump (3) and absorption transfer pipeline (29) respectively, the bottom on the first absorption tower (1) is communicated with oil gas intake line (28) and the first rich oil pump (4) respectively, absorption transfer pipeline (29) is communicated with the bottom of the first adsorption tanks (5) and the bottom of the second adsorption tanks (6) respectively by two branch lines, the top of the first tourie (5) and the top of the second tourie (6) are respectively by pipeline connection combustion reaction transfer pipeline (30), combustion reaction transfer pipeline (30) is communicated with the top entry of electric heater (26), the outlet at bottom of electric heater (26) is communicated with the bottom inlet of catalytic combustion reactor (27), the top exit of catalytic combustion reactor (27) is communicated with the top entry of heat exchanger (25), blower fan (20) is communicated with the top entry of electric heater (26) by the first air inlet pipeline (32), desorb pipeline (31) between the branch line of the first adsorption tanks (5) bottom and the branch line of the second adsorption tanks (6) bottom is communicated with the inlet end of vavuum pump (13), the outlet side of vavuum pump (13) is communicated with second absorption tower (14), the top of second absorption tower (14) is communicated with absorption transfer pipeline (29) and the second oil-poor pump (15) respectively, the bottom of second absorption tower (14) is communicated with the second rich oil pump (16), oil gas intake line (28) is provided with oil and gas switch valve (2), the branch line of the first adsorption tanks (5) bottom is provided with the first absorption intake valve (7), the branch line of the second adsorption tanks (6) bottom is provided with the second absorption intake valve (8), the top pipeline of the first adsorption tanks (5) is provided with the first absorption air outlet valve (9), the top pipeline of the second adsorption tanks (6) is provided with the second absorption air outlet valve (10), the upper one end near the first adsorption tanks (5) of desorb pipeline (31) is provided with the first switching control valve (11), the upper one end near the second adsorption tanks (6) of desorb pipeline (31) is provided with the second switching control valve (12), first air inlet pipeline (32) is provided with the first air inlet adjustment valve (24).
2. a kind of benzene homologues oil gas absorbing adsoption catalysis burning retracting device as claimed in claim 1, it is characterized in that: described combustion reaction transfer pipeline (30) is communicated with the bottom inlet line of heat exchanger (25), the top exit pipeline of heat exchanger (25) is communicated with the top entry of electric heater (26).
3. a kind of benzene homologues oil gas absorbing adsoption catalysis burning retracting device as claimed in claim 1, it is characterized in that: described blower fan (20) is communicated with burning intake line (30) by the second air inlet pipeline (33), and the second air inlet pipeline (33) is provided with the second air inlet adjustment valve (21).
4. a kind of benzene homologues oil gas absorbing adsoption catalysis burning retracting device as claimed in claim 1, is characterized in that: described combustion reaction transfer pipeline (30) is provided with absorption and gives vent to anger concentration detector (17) and combustion flow gauge (18).
5. a kind of benzene homologues oil gas absorbing adsoption catalysis burning retracting device as claimed in claim 1, is characterized in that: described first air inlet pipeline (32) is provided with the first inlet air flow gauge (23).
6. a kind of benzene homologues oil gas absorbing adsoption catalysis burning retracting device as claimed in claim 3, is characterized in that: described second air inlet pipeline (33) is provided with the second inlet air flow gauge (22).
7. a kind of benzene homologues oil gas absorbing adsoption catalysis burning retracting device as claimed in claim 3, is characterized in that: the pipeline after described combustion reaction transfer pipeline (30) and the second air inlet pipeline (33) cross is provided with burning charge concentration detector (19).
8. a kind of benzene homologues oil gas absorbing adsoption catalysis burning retracting device as claimed in claim 1, it is characterized in that: be provided with the first pressure sensor (5-1) in the bottom of described first adsorption tanks (5), in the bottom of the second adsorption tanks (6), be provided with the second pressure sensor (6-1).
9. a kind of benzene homologues oil gas absorbing adsoption catalysis burning retracting device as claimed in claim 1, it is characterized in that: in described first adsorption tanks (5), be provided with the first adsorption temp sensor (5-2), in the second adsorption tanks (6), be provided with the second adsorption temp sensor (6-2).
10. a kind of benzene homologues oil gas absorbing adsoption catalysis burning retracting device as claimed in claim 1, it is characterized in that: be provided with heating temperature sensor (26-1) in described electric heater (26), the top of described catalytic combustion reactor (27), middle part and bottom are respectively equipped with combustion reaction temperature sensor (27-1).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521063035.6U CN205199253U (en) | 2015-12-16 | 2015-12-16 | Benzene series thing oil gas absorbs adsorption catalysis burning recovery unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521063035.6U CN205199253U (en) | 2015-12-16 | 2015-12-16 | Benzene series thing oil gas absorbs adsorption catalysis burning recovery unit |
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| CN205199253U true CN205199253U (en) | 2016-05-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108211781A (en) * | 2017-12-29 | 2018-06-29 | 萍乡市德润科技有限责任公司 | A kind of oil gas catalytic decomposition cleaning system and method |
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2015
- 2015-12-16 CN CN201521063035.6U patent/CN205199253U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108211781A (en) * | 2017-12-29 | 2018-06-29 | 萍乡市德润科技有限责任公司 | A kind of oil gas catalytic decomposition cleaning system and method |
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