CN204073774U - A kind of benzene class organic vapor recovery device - Google Patents
A kind of benzene class organic vapor recovery device Download PDFInfo
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- CN204073774U CN204073774U CN201420557512.3U CN201420557512U CN204073774U CN 204073774 U CN204073774 U CN 204073774U CN 201420557512 U CN201420557512 U CN 201420557512U CN 204073774 U CN204073774 U CN 204073774U
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Abstract
The utility model discloses a kind of benzene class organic vapor recovery device, comprise cryogenic condensation device, temperature swing absorption unit and pressure-swing absorption apparatus, described cryogenic condensation device comprises the ice chest heat exchanger connected successively, refrigeration compressor, condensing heat exchanger, the steam inlet of described ice chest heat exchanger is connected with the outlet of benzene class organic steam, described condensing heat exchanger is connected with described ice chest heat exchanger by valve, form cooling recirculation system, described condensing heat exchanger is also provided with cooling water inlet and coolant outlet, form water circulation system, described ice chest heat exchanger is also provided with liquid outlet, the liquid outlet of described ice chest heat exchanger is connected with layering groove, for reclaiming benzene liquid, of the present utility model by cryogenic condensation, Temp .-changing adsorption and pressure-variable adsorption three stage arrangement reclaim and purify benzene class steam, final benzene class organic steam concentration reaches 12mg/m
3below, complete qualified discharge, and unit is in operation without any secondary pollution.
Description
Technical field
The utility model relates to a kind of retracting device of benzene class (benzene,toluene,xylene etc.) organic steam, in particular a kind of three grades of benzene class organic vapor recovery devices.
Background technology
Energy and environment be the world today development theme Ye Shi China development must faced by problem.Along with the enhancing of environmental consciousness and the requirement of sustainable development, benzene class organic steam recovery operation will be subject to increasing attention.The volatilization of benzene class organic steam is present in the production of petrochemical industry, handling, storage, the links such as canned, such as: the places such as refinery, coke-oven plant, benzene depots.
Because the hydro carbons such as benzene homologues are very easy to volatilization in the processes such as production, storage, transport, sale, use, thus produce very serious benzene class organic steam fixed discharge source, not only cause resources loss, more constitute potential fire hazard, simultaneously poisonous benzene class organic steam severe contamination environment, harm worker's is healthy.
It is investigated, name is called " a kind of two-stage benzene class organic vapor recovery device and recovery method thereof ", the patent No. is ZL201120415119.7, adopt two-stage benzene class organic vapor recovery device and the recovery method thereof of condensation process and Temp .-changing adsorption combination, its very large aspect solves benzene class organic steam to reclaim, but also have certain difference with national milligram level discharge index.
So far, the benzene class organic steam that place market not yet having ripe met large-scale petrochemical factory and coke-oven plant, benzene depots and benzene transfer storage facility etc. to there is benzene class steam volatile emission uses reclaims and the device of real qualified discharge.
Summary of the invention
Goal of the invention: the utility model object is for the deficiencies in the prior art, provides a kind of continuous coo1ing fractional condensation utilizing cryogenic condensation, Temp .-changing adsorption and pressure swing adsorption to realize benzene class organic steam to reclaim and the benzene class organic vapor recovery device of qualified discharge.
Another object of the present utility model is to provide a kind of benzene class organic steam recovery method using said apparatus to realize benzene vapour recovery.
Technical scheme: benzene class organic vapor recovery device described in the utility model, comprise cryogenic condensation device, temperature swing absorption unit and pressure-swing absorption apparatus, described cryogenic condensation device comprises the ice chest heat exchanger connected successively, refrigeration compressor, condensing heat exchanger, the steam inlet of described ice chest heat exchanger is connected with the outlet of benzene class organic steam, described condensing heat exchanger is connected with described ice chest heat exchanger by valve, form cooling recirculation system, described ice chest heat exchanger is also provided with liquid outlet, the liquid outlet of described ice chest heat exchanger is connected with layering groove, for reclaiming benzene liquid, the pressure coolant gas that described cryogenic condensation device is produced by refrigeration compressor, be condensed into after vehicle repair major mixture through condensing heat exchanger, be transported in ice chest heat exchanger, cooling agent absorbs the heat vaporization of benzene class organic steam, benzene class organic steam is lowered the temperature and liquefies.
Described temperature swing absorption unit is more than three groups, often organize temperature swing absorption unit and comprise adsorption box, air inlet triple valve, air outlet valve, switch three-way valve, first import of described air inlet triple valve is connected with the ice chest heat exchanger exit of described cryogenic condensation device by the first transport pump, the outlet of described air inlet triple valve is connected with the import of described adsorption box, the liquid outlet arranged bottom described adsorption box is connected with described layering groove, the outlet of described adsorption box is connected with described air outlet valve import, the outlet of described air outlet valve is connected with the import of described switch three-way valve, second outlet of described switch three-way valve is connected with the second import often organizing air inlet triple valve respectively by the second transport pump, in adsorption box, secondary absorption is carried out for benzene class steam.
Described pressure-variable adsorption comprises adsorption tanks, intake valve, resolve valve and exhaust-valve, the import of described intake valve exports with first of the switch three-way valve often organizing temperature swing absorption unit respectively and is connected, the outlet of described intake valve is connected with the import of described adsorption tanks, the steam (vapor) outlet of described adsorption tanks is connected with described exhaust-valve, steam by exhaust-valve discharged to air, the parsing outlet of described adsorption tanks is connected with the import of described parsing valve, the outlet of described parsing valve is connected with cooling heat exchanger by the 3rd transport pump, the liquid outlet of described cooling heat exchanger is connected with described layering groove.
As preferably, the adsorption box of described temperature swing absorption unit is also provided with saturated vapor import and saturated vapor outlet, the outlet that described saturated vapor import and steam enter valve is connected, described steam enters the import access saturated vapor of valve, described saturated vapor outlet goes out valve import with steam and is connected, and the outlet that described steam goes out valve is connected with described cooling heat exchanger.Made the benzene class ramp regeneration of adsorbing in adsorption box by saturated vapor, enter in cooling heat exchanger with steam.
As preferably, described temperature swing absorption unit is three groups, wherein two groups to benzene class vapor sorption simultaneously, another group passes into saturated vapor and resolves.
As preferably, the condensing heat exchanger of described cryogenic condensation device is connected by magnetic valve, heating power expansion valve with between described ice chest heat exchanger.
As preferably, between described ice chest heat exchanger and described first transport pump, be also provided with spark arrester.
As preferably, described first transport pump, the second transport pump and the 3rd transport pump are explosion-proof air pump.
As preferably, described adsorption box is carbon fiber adsorption and catalytic combustion case, and described adsorption tanks are carbon fiber adsorption and catalytic combustion tank.
The utility model utilizes described device to carry out the method for benzene class organic steam recovery, comprises the following steps,
1. cryogenic condensation: benzene class organic steam is passed in ice chest heat exchanger, again successively through refrigeration compressor, the cooling of condensing heat exchanger classification cycle, benzene class steam is made to be cooled to-30 DEG C, the benzene class steam of 94% ~ 97% is cooled to liquid state, be recycled in layering groove by the liquid outlet of ice chest heat exchanger, the benzene class organic steam concentration after process is about 20g/m
3;
2. Temp .-changing adsorption: the benzene class organic steam after condensation process is input in adsorption box and carries out adsorption treatment, the benzene water mixed liquid body obtained after absorption is recycled in layering groove by the liquid outlet bottom adsorption box, remaining benzene class steam is changed in another adsorption box by switch three-way valve and is carried out secondary absorption, and after absorption, benzene class organic steam concentration is about 40mg/m
3, saturated vapor is passed into the adsorption box completing absorption and carries out dissection process, cool in the vapor transport after parsing to cooling heat exchanger, then be recycled in layering groove by the liquid outlet of cooling heat exchanger;
3. pressure-variable adsorption: the benzene class steam obtained after Temp .-changing adsorption is input in adsorption tanks and carries out deep layer adsorption treatment, the benzene water mixed liquid body obtained is recycled in layering groove by the liquid outlet of adsorption tanks, and the benzene class organic steam concentration after deep layer adsorption treatment reaches 12mg/m
3below, safety is drained in air;
4. benzene liquid is collected: the benzene water mixed liquid body collected in layering groove left standstill in layering groove, after layering, highly purified benzene liquid is transported in holding vessel, discharges waste water.
Preferably, step 2. middle benzene class steam can be adsorbed simultaneously in two adsorption boxes, and another adsorption box passes into steam and resolves, and after being parsed, introducing clean gas and carries out cool drying, enter next sorption cycle after cool drying terminates to adsorption box.
Main operational principle of the present utility model is: in the utility model, the high-temperature high-pressure refrigerant gas of being discharged by refrigeration compressor during the work of cryogenic condensation device enters condensing heat exchanger and is condensed into high-pressure sub-cooled liquid, the vehicle repair major mixture becoming low-temp low-pressure through heating power expansion valve reducing pressure by regulating flow enters ice chest heat exchanger, cold-producing medium evaporates and absorbs the heat by the benzene class organic steam in ice chest heat exchanger in ice chest heat exchanger, the benzene class organic steam flowing through ice chest heat exchanger is lowered the temperature liquefaction, cold-producing medium after fully vaporizing again cooled compressor compresses enter next round circulation.Wherein ice chest heat exchanger has three temperature fields, about 20 DEG C, backheat temperature field, benzene crystallization 6 DEG C of temperature fields and-30 DEG C of temperature fields, and complete machine is constantly circulated by above process, thus reaches the object of benzene class organic steam continuous cooling to-30 DEG C.
Temperature swing absorption unit is utilize adsorbent to adsorbate selective, and namely the difference of adhesion power between each component and NACF in benzene class organic steam and air Mixture, makes the constituent of air of difficult absorption and the benzene class organic steam Component seperation easily adsorbed; Utilize simultaneously molecular activity with temperature raise and strengthen characteristic, pass into after adsorbent work reaches setting-up time steam make adsorbent obtain regeneration.
Beneficial effect: (1) of the present utility model by cryogenic condensation, Temp .-changing adsorption and pressure-variable adsorption three stage arrangement reclaim and purify benzene class steam, final benzene class organic steam concentration reaches 12mg/m
3below, complete qualified discharge, and unit is in operation without any secondary pollution; (2) be of the present utility modelly adsorbed as more than three, absorption and the parsing of the steam of benzene class can be carried out simultaneously, increase work efficiency; (3) remaining in the utility model adsorption box benzene class possesses activity again by passing into saturated vapor, not only makes adsorption box extend service life, avoids the waste of resource simultaneously; (2) the utility model is by after the benzene class mixing material layering in layering groove, and the benzene homologues very high purity of recovery can directly be recycled, economic benefits; (3) the utility model utilizes the cold of device itself to carry out backheat exchange, and the gas that heat exchanger is discharged is the light concentration gas of near ambient temperature, and machine energy-saving is remarkable; (4) the utility model transport pump is explosion-proof type, and package unit and emission all meet fire-proof and explosion-proof safety standard; (5) the utility model compact conformation, floor space is little, and unit according to presetting fully automatic operation, can be supervised without the need to special messenger after connecting.
Accompanying drawing explanation
Fig. 1 is the structural representation of benzene class organic vapor recovery device described in the utility model.
Detailed description of the invention
Below by accompanying drawing, technical solutions of the utility model are described in detail, but protection domain of the present utility model is not limited to described embodiment.
embodiment 1:a kind of benzene class organic vapor recovery device, comprise cryogenic condensation device, temperature swing absorption unit and pressure-swing absorption apparatus, described cryogenic condensation device comprises the ice chest heat exchanger 15 connected successively, refrigeration compressor 12, condensing heat exchanger 11, the steam inlet of described ice chest heat exchanger 15 is connected with the outlet of benzene class organic steam, by magnetic valve 13 between described condensing heat exchanger 11 and described ice chest heat exchanger 15, heating power expansion valve 14 connects, form cooling recirculation system, described condensing heat exchanger 11 is also provided with cooling medium inlet and cooling medium outlet, form medium circulation system, described ice chest heat exchanger 15 is also provided with liquid outlet, the liquid outlet of described ice chest heat exchanger 15 is connected with layering groove 26, for reclaiming benzene liquid,
Described temperature swing absorption unit is more than three groups, often organize temperature swing absorption unit and comprise adsorption box 30, air inlet triple valve 31, air outlet valve 34, switch three-way valve 35, first import of described air inlet triple valve 31 is by the first explosion-proof air pump 22, spark arrester 21 exports with the ice chest heat exchanger 15 of described cryogenic condensation device and is connected, the outlet of described air inlet triple valve 31 is connected with the import of described adsorption box 30, the liquid outlet arranged bottom described adsorption box 30 is connected with described layering groove 26, the adsorption box of described temperature swing absorption unit is also provided with saturated vapor import and saturated vapor outlet, the outlet that described saturated vapor import and steam enter valve 32 is connected, described steam enters the import access saturated vapor of valve 32, described saturated vapor outlet goes out valve 33 import with steam and is connected, the outlet that described steam goes out valve 33 is connected with described cooling heat exchanger 24, the outlet of described adsorption box 30 is connected with the import of described air outlet valve 34, the outlet of described air outlet valve 34 is connected with the import of described switch three-way valve 35, second outlet of described switch three-way valve 35 is connected with the second import often organizing air inlet triple valve 31 respectively by explosion-proof air pump 23, in adsorption box, secondary absorption is carried out for benzene class steam,
Described pressure-variable adsorption comprises adsorption tanks 40, intake valve 41, resolve valve 42 and exhaust-valve 43, the import of described intake valve 41 exports with first of the switch three-way valve 35 often organizing temperature swing absorption unit respectively and is connected, the outlet of described intake valve 41 is connected with the import of described adsorption tanks 40, the steam (vapor) outlet of described adsorption tanks 40 is connected with described exhaust-valve 43, steam passes through exhaust-valve 43 discharged to air, the parsing outlet of described adsorption tanks 40 is connected with the import of described parsing valve 42, the outlet of described parsing valve 42 is connected with cooling heat exchanger 24 by explosion-proof air pump 25, described cooling heat exchanger 24 is also provided with cooling medium inlet and cooling medium outlet, form medium circulation system, the liquid outlet of described cooling heat exchanger 24 is connected with described layering groove 26.
Specific works process of the present utility model comprises the following steps,
1. cryogenic condensation: benzene class organic steam is passed in ice chest heat exchanger 15, again successively through refrigeration compressor 12, the cooling of condensing heat exchanger 11 classification cycle, benzene class steam is made to be cooled to-30 DEG C, the benzene class steam of 94% ~ 97% is cooled to liquid state, be recycled in layering groove 26 by the liquid outlet of ice chest heat exchanger 15, the benzene class organic steam concentration after process is about 20g/m
3;
2. Temp .-changing adsorption: the benzene class organic steam after condensation process is input in adsorption box 30 and carries out adsorption treatment, the benzene water mixed liquid body obtained after absorption is recycled in layering groove 26 by the liquid outlet bottom adsorption box 30, remaining benzene class steam is changed in another adsorption box by switch three-way valve 35 and is carried out secondary absorption, and after absorption, benzene class organic steam concentration is about 40mg/m
3saturated vapor is passed into the adsorption box completing absorption and carries out dissection process, cool in vapor transport after parsing to cooling heat exchanger 24, be recycled in layering groove 26 by the liquid outlet of cooling heat exchanger 24 again, after being parsed, clean gas is introduced to adsorption box and carries out cool drying, after cool drying terminates, enter next sorption cycle;
3. pressure-variable adsorption: the benzene class steam obtained after Temp .-changing adsorption is input in adsorption tanks 40 and carries out deep layer adsorption treatment, the benzene water mixed liquid body obtained is recycled in layering groove 26 by the liquid outlet of adsorption tanks 40, and the benzene class organic steam concentration after deep layer adsorption treatment reaches 12mg/m
3below, safety is drained in air;
4. benzene liquid is collected: left standstill in layering groove by the benzene water mixed liquid body collected in layering groove 26, after layering, highly purified benzene liquid is transported in holding vessel, discharge waste water.
As mentioned above, although represented with reference to specific preferred embodiment and described the utility model, it shall not be construed as the restriction to the utility model self.Under the spirit and scope prerequisite of the present utility model not departing from claims definition, various change can be made in the form and details to it.
Claims (7)
1. a benzene class organic vapor recovery device, it is characterized in that: comprise cryogenic condensation device, temperature swing absorption unit and pressure-swing absorption apparatus, described cryogenic condensation device comprises the ice chest heat exchanger (15) connected successively, refrigeration compressor (12), condensing heat exchanger (11), the steam inlet of described ice chest heat exchanger (15) is connected with the outlet of benzene class organic steam, described condensing heat exchanger (11) is connected with described ice chest heat exchanger (15) by valve, form cooling recirculation system, described ice chest heat exchanger (15) is also provided with liquid outlet, the liquid outlet of described ice chest heat exchanger (15) is connected with layering groove (26), for reclaiming benzene liquid,
Described temperature swing absorption unit is more than three groups, often organize temperature swing absorption unit and comprise adsorption box (30), air inlet triple valve (31), air outlet valve (34), switch three-way valve (35), first import of described air inlet triple valve (31) is exported with the ice chest heat exchanger (15) of described cryogenic condensation device by the first transport pump (22) and is connected, the outlet of described air inlet triple valve (31) is connected with the import of described adsorption box (30), the liquid outlet that described adsorption box (30) bottom is arranged is connected with described layering groove (26), the outlet of described adsorption box (30) is connected with described air outlet valve (34) import, the outlet of described air outlet valve (34) is connected with the import of described switch three-way valve (35), second outlet of described switch three-way valve (35) is connected with the second import often organizing air inlet triple valve (31) respectively by the second transport pump (23), in adsorption box, secondary absorption is carried out for benzene class steam,
Described pressure-variable adsorption comprises adsorption tanks (40), intake valve (41), resolve valve (42) and exhaust-valve (43), the import of described intake valve (41) exports with first of the switch three-way valve (35) often organizing temperature swing absorption unit respectively and is connected, the outlet of described intake valve (41) is connected with the import of described adsorption tanks (40), the steam (vapor) outlet of described adsorption tanks (40) is connected with described exhaust-valve (43), steam passes through exhaust-valve (43) discharged to air, the parsing outlet of described adsorption tanks (40) is connected with the import of described parsing valve (42), the outlet of described parsing valve (42) is connected with cooling heat exchanger (24) by the 3rd transport pump (25), the liquid outlet of described cooling heat exchanger (24) is connected with described layering groove (26).
2. benzene class organic vapor recovery device according to claim 1, it is characterized in that: the adsorption box of described temperature swing absorption unit is also provided with saturated vapor import and saturated vapor outlet, the outlet that described saturated vapor import and steam enter valve (32) is connected, described steam enters the import access saturated vapor of valve (32), described saturated vapor outlet goes out valve (33) import with steam and is connected, and the outlet that described steam goes out valve (33) is connected with described cooling heat exchanger (24).
3. benzene class organic vapor recovery device according to claim 2, is characterized in that: described temperature swing absorption unit is three groups, wherein two groups to benzene class vapor sorption simultaneously, another group passes into saturated vapor and resolves.
4. benzene class organic vapor recovery device according to claim 1, is characterized in that: the condensing heat exchanger (11) of described cryogenic condensation device is connected by magnetic valve (13), heating power expansion valve (14) with between described ice chest heat exchanger (15).
5. benzene class organic vapor recovery device according to claim 1, is characterized in that: be also provided with spark arrester (21) between described ice chest heat exchanger (15) and described first transport pump (22).
6. benzene class organic vapor recovery device according to claim 1, is characterized in that: described first transport pump (22), the second transport pump (23) and the 3rd transport pump (25) are explosion-proof air pump.
7. benzene class organic vapor recovery device according to claim 1, is characterized in that: described adsorption box (30) is carbon fiber adsorption and catalytic combustion case, and described adsorption tanks (40) are carbon fiber adsorption and catalytic combustion tank.
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| CN201420557512.3U CN204073774U (en) | 2014-09-25 | 2014-09-25 | A kind of benzene class organic vapor recovery device |
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| CN201420557512.3U CN204073774U (en) | 2014-09-25 | 2014-09-25 | A kind of benzene class organic vapor recovery device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104225951A (en) * | 2014-09-25 | 2014-12-24 | 南京都乐制冷设备有限公司 | Benzene organic vapor recycling device and benzene organic vapor recycling method |
| CN105126456A (en) * | 2015-07-15 | 2015-12-09 | 南通星辰合成材料有限公司 | Method of treating waste gas containing toluene-type volatile organic compound (VOC) |
| WO2017132980A1 (en) * | 2016-02-05 | 2017-08-10 | 深圳市尚佳能源网络有限责任公司 | Oil and gas low temperature recovery device |
| CN110841421A (en) * | 2019-12-09 | 2020-02-28 | 珠海大横琴科技发展有限公司 | Organic steam adsorbs recovery system |
| CN112023605A (en) * | 2019-06-03 | 2020-12-04 | 中石化南京化工研究院有限公司 | Organic steam retrieves experimental apparatus |
-
2014
- 2014-09-25 CN CN201420557512.3U patent/CN204073774U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104225951A (en) * | 2014-09-25 | 2014-12-24 | 南京都乐制冷设备有限公司 | Benzene organic vapor recycling device and benzene organic vapor recycling method |
| CN104225951B (en) * | 2014-09-25 | 2016-02-03 | 南京都乐制冷设备有限公司 | A kind of benzene class organic vapor recovery device and recovery method thereof |
| CN105126456A (en) * | 2015-07-15 | 2015-12-09 | 南通星辰合成材料有限公司 | Method of treating waste gas containing toluene-type volatile organic compound (VOC) |
| WO2017132980A1 (en) * | 2016-02-05 | 2017-08-10 | 深圳市尚佳能源网络有限责任公司 | Oil and gas low temperature recovery device |
| CN112023605A (en) * | 2019-06-03 | 2020-12-04 | 中石化南京化工研究院有限公司 | Organic steam retrieves experimental apparatus |
| CN110841421A (en) * | 2019-12-09 | 2020-02-28 | 珠海大横琴科技发展有限公司 | Organic steam adsorbs recovery system |
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Granted publication date: 20150107 Effective date of abandoning: 20160203 |
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