CN102772994A - Negative pressure type organic tail gas recovery tower and process thereof - Google Patents
Negative pressure type organic tail gas recovery tower and process thereof Download PDFInfo
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- CN102772994A CN102772994A CN2012102080887A CN201210208088A CN102772994A CN 102772994 A CN102772994 A CN 102772994A CN 2012102080887 A CN2012102080887 A CN 2012102080887A CN 201210208088 A CN201210208088 A CN 201210208088A CN 102772994 A CN102772994 A CN 102772994A
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Abstract
The invention relates to a negative pressure type organic tail gas recovery tower and a process thereof. The negative pressure type organic tail gas recovery tower comprises a spray cylinder, a base tank and a vacuum pump, the spray cylinder performs multilayer spraying, a water pump is arranged on a spray supplying pipeline and communicated with the bottom of the base tank, and an opening is arranged at the top of the spray cylinder; a cooling coil is arranged inside the base tank and connected with an external circulation refrigerating machine; the vacuum pump is connected with a tail gas pipe and a tail gas input pipe and respectively communicated with the middle portion and the lower portion of the base tank through a water pumping pipe and a water delivery pipe; and a temporary storage tank is parallelly arranged outside the base tank and connected with the base tank through a U-shaped pipe, and an overflow port is arranged on the upper portion of the temporary storage tank. According to the recovery tower and the process thereof, on the basis of traditional spray processes, a negative pressure environment is designed to reduce overflowing of organic tail gases; by means of circulation refrigerating, cooling water is forced to perform circulation spraying so that water saving is achieved and liquefaction of the organic tail gases is thorough; and by means of a U-shaped pipe bypass,leading-out and temporary storage of organic solutions under the negative pressure environment are achieved, and recovery rate of the organic tail gases is over 90%.
Description
One, technical field
The present invention relates to chemical field solvent recovery technology from vent gas and device, be specifically related to a kind of suction type organic tail gas recovery tower and technology thereof.
Two, background technology
With the grease in the organic solvent lixiviate cottonseed, realize cold-press production, more traditional hot moulding technology can be avoided the cottonseed kernel protein heated denaturalization, and further dephenolize obtains cotton protein.Application number is the processing method that 00134520.6 Chinese patent specification discloses a kind of cottonseed, is to adopt organic solvent behind cottonseed lixiviate grease, thereby again cotton dregs is carried out the process that the methyl alcohol dephenolize obtains cottonseed kernel protein.In this process, organic solvent is recycle, wherein need be in the recovery of liquefying of technology end to the organic solvent tail gas of vaporization.
The patent No. is 02231730.9 the disclosed a kind of negative pressure method safety environmentally friendly ammonia tail gas retracting device of Chinese patent; Form by jet ejectors, cooler, ammoniacal liquor negative-pressure cup and circulating pump; Negative pressure through retracting device produced sucks ammonia tail gas; And it is dissolved in the water, thereby realize that ammonia tail gas reclaims and eliminate the environmental pollution that tail gas brings.But the recycle object ammonia of this method is water-soluble gas, and is inequality with organic solvent tail gas, thereby can not be used for the recovery of organic tail gas.
The patent No. is that the utility model of ZL201020167633.9 discloses a kind of n-hexane device for recovering tail gas; Comprise exhaust gas filter, absorbent charcoal adsorption tank, gas-distributing cylinder, condenser, layering groove; Utilize granular activated carbon as adsorbing medium; With the absorption of the n-hexane in the organic tail gas, adopt low-pressure steam as desorption medium again, realize the n-hexane recycling.But this method is to reclaim once more to the combustion gas that reclaimed that is condensed, and the content of n-hexane reduces greatly in its organic tail gas, and absorption of being adopted and separating process operating cost are higher relatively, also do not fit into a higher tail gas of concentration.
Three, summary of the invention
The object of the invention provides a kind of lixiviation process that is applicable to and produces organic tail gas recovery technology and device in the technology of cottonseed oil and cotton protein.
This suction type organic tail gas recovery tower comprises spray tube, end jar, vavuum pump, and described spray tube is the multilayer spray, and every layer comprises spray head, filler, on the spray feeding pipe, is provided with water pump and communicates with end pot bottom, and tube pushes up establishes opening.Jar set inside cooling coil of the described end links to each other with the outer loop refrigeration machine.Described vavuum pump links to each other with the tail gas input pipe with offgas duct, and is connected with the middle part and the bottom of end jar respectively through drinking-water pipe and water-supply-pipe.Outside end jar, laterally arrange temporary jar in addition, this temporary jar is connected through U type pipe with end jar, is provided with overfall on temporary jar top.
The recovery technology of this recovery tower is: organic tail gas-multi-stage spray (negative pressure, the cooler environment)-organic coarse solution-temporary purification-organic solution of separating.
This recovery tower has designed subnormal ambient on tradition spray technology basis, effectively prevent the loss of overflowing of organic tail gas.And circularly cooling, cooling water forced circulation spray, not only using water wisely, and make organic tail gas liquefaction thoroughly.U type pipe bypass has realized the derivation of upper strata organic solution under the subnormal ambient and temporary well, and the organic tail gas rate of recovery can reach more than 90%.
Three, accompanying drawing and explanation
Fig. 1 is the structural representation of recovery tower of the present invention, and Fig. 2 is that the present invention reclaims process chart.
Four, the specific embodiment
Like Fig. 1, suction type organic tail gas recovery tower of the present invention comprises spray tube 4, end jar 1, vavuum pump 10; Described spray tube 4 is two-layer spray; Every layer comprises spray head 8, filler 5, is provided with water pump 17 on the feeding pipe and communicates with end jar 1 bottom at spray, and opening 6 is established on the tube top.Jar of the described end 1 set inside cooling coil 2 links to each other with outer loop refrigeration machine 7.Described vavuum pump 10 links to each other with tail gas input pipe 3 with offgas duct 9, and is connected with the middle part and the bottom of end jar 1 respectively through drinking-water pipe 11 and water-supply-pipe 12.Outside end jar 1, laterally arrange temporary jar 14, this temporary jar 14 is connected through U type pipe 13 with end jar 1, and all to extending below, and its port of export in keeping in jar 14 is provided with erosion control cap 18 to the two-port of U type pipe 13 in tank body.Be provided with overfall 16 on temporary jar 14 tops.
This recovery tower has carried out improving significantly on tradition spray technology basis; Ring vaccum pump 10 is not only carried organic tail gas in spray tube 4; And carry out forced circulation through drinking-water pipe 11 and water-supply-pipe 12 and liquid in the end jar 1; Thereby, the organic tail gas in the spray tube 4 can not overflowed from the top for spray system provides the subnormal ambient of 0.03-0.04MPa.Cooling coil 2 carries out circularly cooling with outer loop refrigeration machine 7, and the cooling water in the end jar 1 (16 ℃-21 ℃) is through water pump 17 forced circulation spray, and bilayer sprays tube 4 lengthening spray distances, and it is more thorough that organic tail gas is contacted with cooling water, and realization is fully liquefied.The bypass of U type pipe 13 structure has realized the derivation of upper strata organic solution under the subnormal ambient and temporary well.Erosion control cap 18 makes the organic solution minimizing impact that gets into temporary jar 14 from U type pipe 13, thereby reduces the upset to temporary jar 14 interior liquid phase systems, promotes it to stablize also precipitate and separate.
The recovery technology of this recovery tower is: organic tail gas-multi-stage spray (negative pressure, the cooler environment)-organic coarse solution-temporary purification-organic solution of separating.
The not only using water wisely of this system, and organic tail gas liquefaction is thoroughly, and the organic tail gas rate of recovery can reach more than 95%.Through production practices, the full technology organic solvent of lixiviation process cotton protein production consumption rate can be controlled in below 4%.Not only conservation consumption, and reduced toxic emission.
Claims (3)
1. suction type organic tail gas recovery tower; Comprise spray tube (4), end jar (1), vavuum pump (10); It is characterized in that described spray tube (4) is the multilayer spray; Every layer comprises spray head (8), filler (5), is provided with water pump (17) on the feeding pipe and communicates with end jar (1) bottom at spray, and opening (6) is established on the tube top; Jar of the described end (1) set inside cooling coil (2) links to each other with outer loop refrigeration machine (7); Described vavuum pump (10) links to each other with tail gas input pipe (3) with offgas duct (9), and is connected with the middle part and the bottom of end jar (1) respectively through drinking-water pipe (11) and water-supply-pipe (12); Outside end jar (1), laterally arrange in addition temporary jar (14), these temporary jar (14) are connected through U type pipe (13) with end jar (1), are provided with overfall (16) on temporary jar (14) top.
2. recovery tower as claimed in claim 1 is characterized in that described spray tube (4) for two-layer, and all to extending below, and its port of export in temporary jar (14) is provided with erosion control cap (18) to the two-port of described U type pipe (13) in tank body.
3. suction type organic tail gas recovery tower as claimed in claim 1 is characterised in that it reclaims process route and is: organic tail gas-multi-stage spray (negative pressure, the cooler environment)-organic coarse solution-temporary purification-organic solution of separating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210208088.7A CN102772994B (en) | 2012-06-12 | 2012-06-12 | Negative pressure type organic tail gas recovery tower and process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210208088.7A CN102772994B (en) | 2012-06-12 | 2012-06-12 | Negative pressure type organic tail gas recovery tower and process thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102772994A true CN102772994A (en) | 2012-11-14 |
| CN102772994B CN102772994B (en) | 2014-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210208088.7A Expired - Fee Related CN102772994B (en) | 2012-06-12 | 2012-06-12 | Negative pressure type organic tail gas recovery tower and process thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107626117A (en) * | 2017-11-10 | 2018-01-26 | 大丰鑫源达化工有限公司 | A kind of organic solvent recovery device |
| CN108977795A (en) * | 2017-05-31 | 2018-12-11 | 中国科学院金属研究所 | A kind of device and method for being electrically coupled chemical vapour deposition technique and preparing coat of silicon carbide |
| CN110939855A (en) * | 2019-12-31 | 2020-03-31 | 苏州致邦能源装备有限公司 | Low-temperature liquid storage tank with anti-flushing spraying device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200948368Y (en) * | 2006-05-17 | 2007-09-19 | 殷卫兵 | Mircro-negative-pressure type and freezing type packing tower tail gas recovery device |
| CN200995114Y (en) * | 2007-01-17 | 2007-12-26 | 张建志 | Impact spray absorbing tower |
| CN202778243U (en) * | 2012-06-12 | 2013-03-13 | 新疆震企生物科技有限公司 | Negative-pressure organic tail gas recovery tower |
-
2012
- 2012-06-12 CN CN201210208088.7A patent/CN102772994B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200948368Y (en) * | 2006-05-17 | 2007-09-19 | 殷卫兵 | Mircro-negative-pressure type and freezing type packing tower tail gas recovery device |
| CN200995114Y (en) * | 2007-01-17 | 2007-12-26 | 张建志 | Impact spray absorbing tower |
| CN202778243U (en) * | 2012-06-12 | 2013-03-13 | 新疆震企生物科技有限公司 | Negative-pressure organic tail gas recovery tower |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108977795A (en) * | 2017-05-31 | 2018-12-11 | 中国科学院金属研究所 | A kind of device and method for being electrically coupled chemical vapour deposition technique and preparing coat of silicon carbide |
| CN108977795B (en) * | 2017-05-31 | 2021-01-12 | 中国科学院金属研究所 | Device and method for preparing silicon carbide coating by using electric coupling chemical vapor deposition method |
| CN107626117A (en) * | 2017-11-10 | 2018-01-26 | 大丰鑫源达化工有限公司 | A kind of organic solvent recovery device |
| CN110939855A (en) * | 2019-12-31 | 2020-03-31 | 苏州致邦能源装备有限公司 | Low-temperature liquid storage tank with anti-flushing spraying device |
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| Publication number | Publication date |
|---|---|
| CN102772994B (en) | 2014-04-30 |
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Address after: 831100 Xinjiang Wujiaqu City League farm C District No. 16 Patentee after: XINJIANG ZHENGQI BIOTECHNOLOGY CO., LTD. Address before: 831100 the Xinjiang Uygur Autonomous Region Changji City Wuyi Road on the north side of No. 35 Patentee before: Xinjiang Zhenqi Bio-technology Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140430 Termination date: 20180612 |