CN1539544A - Adsorption technique - Google Patents
Adsorption technique Download PDFInfo
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- CN1539544A CN1539544A CNA031165567A CN03116556A CN1539544A CN 1539544 A CN1539544 A CN 1539544A CN A031165567 A CNA031165567 A CN A031165567A CN 03116556 A CN03116556 A CN 03116556A CN 1539544 A CN1539544 A CN 1539544A
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- Separation Of Gases By Adsorption (AREA)
Abstract
An adsorption technology features that its system is composed of more than one adsorption tower and condenser. All the adsorption towers are parallelly connected to gas-material pipeline and each adsorption tower has a built-in cooler. Said adsorption technology includes condensing part of raw organic hydrocarbon, oil-water separation, flowing rest of organic hydrocarbon in adsorption tower, multi-layer adsorbing, cooling for optimal adsorption, switching to next adsorption tower while thermal regeneration for this adsorption tower, and introducing cooling gas to bed and cooling medium to cooler.
Description
Technical field:
The present invention relates to a kind of efficient absorbing process that improves the rate of adsorption and saturation factor.It belongs to gas and separates and purification techniques.
Background technology:
Absorbing process is applicable to relatively and purifies the waste gas that contains multiple pollutant that especially contain organic waste gas, it can will contain the organic matter waste gas purification to extremely low concentration (even being lower than the ppm level).
In adsorption process, gas molecule is shifted to adsorbent (surface of solids, for example: molecular sieve, alumina silicate, silica gel, active carbon etc.) surface, and its molecular motion greatly reduces, and discharges heat.Therefore, adsorption process heat release always.On the contrary, desorb is the inverse process of absorption, necessary heat supply, and desorb just can be proceeded down.So desorb is a heating process in fact often.The methane gas of the air of industrial overheated steam commonly used, heating, heated nitrogen, heating waits and carries out desorb, and it is referred to as regeneration again.
Got back to adsorption operations before the stage from regenerative operation, must be through a cooling procedure.A complete absorbing process comprises three operational phases, promptly adsorbs, regenerates, cools off, so, often need be provided with two or three industrial, even more adsorption tower, carry out alternate operation, to keep the technical process serialization.
Industrial at present, absorbing process of being used and facilities and equipments all belong to non-isothermal absorption, because in adsorption tower, internal cooler is not set, so in adsorption process, because the temperature of adsorbent can increase in the exotherm effect, adsorption tower bed, the reduction that finally can cause the rate of adsorption to descend and adsorb saturation factor.
Summary of the invention:
Technical problem to be solved by this invention provides and a kind ofly can effectively overcome above-mentioned defective, improves the rate of adsorption and absorption saturation factor, shortens the cool time behind the regenerative operation, saves the novel absorbing process of operating cost.The technical solution adopted for the present invention to solve the technical problems is, a kind of novel absorbing process, mainly being one constitutes to a plurality of adsorption towers that have built-in cooler, its characteristics are: each adsorption tower links to each other with the gas stream pipeline side by side, realize each tower independent operation, unstripped gas enters before the adsorption tower, be introduced into condenser, the organic hydrocarbon of part is in this condensation in the unstripped gas, flow into oil-water separation tank by potential difference, the unstripped gas that is not condensed flows into an adsorption tower through demister, through having the adsorbent with multiple layers fixed bed of built-in cooler, organic hydrocarbon is adsorbed.Heat of adsorption is constantly shifted out by built-in cooler in the adsorption process.After the adsorption operations stage finishes, system switches to another adsorption tower and carries out adsorption operations, and meanwhile last adsorption tower begins to carry out hot regenerative operation, feeds refrigerating gas after waiting to finish in bed, and feed cooling medium to built-in cooler, adsorption tower is cooled off fast until preference temperature.Owing to adopt such scheme, be not difficult to draw the present invention and have following beneficial effect: (1) is at adsorption operations in the stage, in time the absorption release heat is shifted by built-in cooler, can remain under the optimised process temperature and adsorb, improve the non-isothermal phenomenon, improved the rate of adsorption and absorption saturation factor; (2) in the stage, also be by built-in cooler at cooling down operation, the temperature with bed lowers as soon as possible, has shortened cool time, and favourable adsorption tower alternate operation also reduces the refrigerating gas consumption that needs to purge usefulness because of the bed cooling simultaneously, has saved operating cost; (3) owing to be divided into several height than low bed layer, air-flow distributes, and more trend is even, and the gas-solid contact improves, and the utilization rate of adsorbent also correspondingly improves.
Description of drawings:
Below in conjunction with drawings and Examples the present invention is described in further detail.
Accompanying drawing is a process chart of the present invention.
The specific embodiment:
Referring to accompanying drawing, the dusty gas that contains organic hydrocarbon (has certain pressure, then in system, to increase supercharger if atmosphere gas or be not enough to overcomes the gas of adsorption bed and SR) at first feed condensate cooler C-E101, there is organic hydrocarbon (as aromatic hydrocarbons etc.) of part to be condensed here, flows into oil-water separation tank C-V101.Behind the dusty gas process demister C-F101 that is not condensed, just flow into activated carbon adsorber C-A101 system, this example is provided with three identical adsorption towers, rely on the switching adsorbed gas of valve only to enter wherein one, for example enter the bottom of C-A101a, through multilayer activated carbon and fixed bed layer and built-in cooler, organic hydrocarbon is by charcoal absorption, adsorb heat simultaneously and also constantly shift out, make active carbon absorption technology keep carrying out in the best condition by built-in cooler.Be adsorbed back gas just for Purge gas, be expelled to the atmosphere from the C-A101a top.When activated carbon adsorptive capacity reached a constant volume among the activated carbon adsorber C-A101a, the adsorption operations stage of this tower finished, at this moment, by valve adsorbed gas was switched to another adsorption tower C-A101b, and adsorbed gas will be finished adsorption treatment at C-A101b.
C-A101a will enter the regenerative operation stage.In this course, close built-in cooler, cooling medium is put back in the cooling system, to feed superheated steam regenerate (also can feed hot nitrogen) this moment, adsorbed organic matter in the active carbon is desorbed, flow out from adsorption tower C-A101a bottom,, coagulate water and organic matter and flow into oil-water separation tank C-V101 again through partition condenser C-E102 condensation.After treating that superheated steam purging and desorption technique are finished, regenerative operation is finished.
After this, C-A101a will begin to cool down operation, close the regenerative system valve, open cooling agent system valve, feed nitrogen, feed cooling agent to built-in cooler simultaneously from cat head, cooling is until next round absorbing process state fast with activated carbon adsorber C-A101a, and cooling down operation also will be finished so.
Three adsorption towers rely on valve to switch, and will finish absorption, regeneration, cooling down operation, to keep the continuity of system.
Claims (1)
1, a kind of novel absorbing process, mainly being one constitutes to a plurality of adsorption towers and condenser, it is characterized in that: each adsorption tower links to each other with the gas stream pipeline side by side, realize each tower independent operation, unstripped gas enters before the adsorption tower, be introduced into condenser, the organic hydrocarbon of part is in this condensation in the unstripped gas, condensate liquid flows into oil-water separation tank by potential difference, the unstripped gas that is not condensed is through demister, flow into an adsorption tower, through having the adsorbent with multiple layers fixed bed of built-in cooler, organic hydrocarbon is adsorbed, and heat of adsorption is constantly shifted out by built-in cooler in the adsorption process, after treating that the adsorption operations stage finishes, switch to another adsorption tower by system and carry out adsorption operations, meanwhile last adsorption tower begins to carry out hot regenerative operation, feeds refrigerating gas after waiting to finish again in bed, and feed cooling medium to built-in cooler, adsorption tower is cooled off fast until preference temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031165567A CN1539544A (en) | 2003-04-22 | 2003-04-22 | Adsorption technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031165567A CN1539544A (en) | 2003-04-22 | 2003-04-22 | Adsorption technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1539544A true CN1539544A (en) | 2004-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA031165567A Pending CN1539544A (en) | 2003-04-22 | 2003-04-22 | Adsorption technique |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102764517A (en) * | 2012-07-27 | 2012-11-07 | 海湾环境科技（北京）股份有限公司 | Waste gas recovery processing system and recovery processing technique used in chemical car loading |
| CN102941001A (en) * | 2012-11-02 | 2013-02-27 | 江苏航天惠利特环保科技有限公司 | Adsorption plant |
| CN103611388A (en) * | 2013-11-21 | 2014-03-05 | 马军 | Adsorption device for adsorbing organic solvents from waste gas containing organic solvents |
| CN104911352A (en) * | 2015-05-15 | 2015-09-16 | 中国海洋大学 | Low-temperature adsorption device |
| CN105848755A (en) * | 2013-12-16 | 2016-08-10 | 雷内吉公司 | Process and apparatus for cleaning raw product gas |
| CN106268308A (en) * | 2016-10-28 | 2017-01-04 | 浙江正大空分设备有限公司 | A kind of remove the cleaning system of VOC in industrial waste gas |
| CN107737511A (en) * | 2017-08-29 | 2018-02-27 | 北京普惠实华科技有限公司 | A kind of safety-type absorbent charcoal adsorption tank oil-gas recovery method |
| CN110479028A (en) * | 2019-08-28 | 2019-11-22 | 中天科技精密材料有限公司 | A kind of oil vapor treatment system |
| CN111760416A (en) * | 2020-06-28 | 2020-10-13 | 程伟良 | Switching type fixed bed flue gas treatment system |
-
2003
- 2003-04-22 CN CNA031165567A patent/CN1539544A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102764517A (en) * | 2012-07-27 | 2012-11-07 | 海湾环境科技（北京）股份有限公司 | Waste gas recovery processing system and recovery processing technique used in chemical car loading |
| CN102764517B (en) * | 2012-07-27 | 2016-05-18 | 海湾环境科技（北京）股份有限公司 | Waste gas reclamation treatment system and recovery processing technique thereof during for chemicals entrucking |
| CN102941001A (en) * | 2012-11-02 | 2013-02-27 | 江苏航天惠利特环保科技有限公司 | Adsorption plant |
| CN103611388A (en) * | 2013-11-21 | 2014-03-05 | 马军 | Adsorption device for adsorbing organic solvents from waste gas containing organic solvents |
| US9828247B2 (en) | 2013-12-16 | 2017-11-28 | Renergi Pty Ltd | Process and apparatus for cleaning raw product gas |
| CN105848755A (en) * | 2013-12-16 | 2016-08-10 | 雷内吉公司 | Process and apparatus for cleaning raw product gas |
| CN104911352A (en) * | 2015-05-15 | 2015-09-16 | 中国海洋大学 | Low-temperature adsorption device |
| CN104911352B (en) * | 2015-05-15 | 2017-01-11 | 中国海洋大学 | Low-temperature adsorption device |
| CN106268308B (en) * | 2016-10-28 | 2017-04-26 | 浙江正大空分设备有限公司 | Purifying system for removing VOC (Volatile Organic Compounds) out of industrial waste gas |
| CN106268308A (en) * | 2016-10-28 | 2017-01-04 | 浙江正大空分设备有限公司 | A kind of remove the cleaning system of VOC in industrial waste gas |
| CN107737511A (en) * | 2017-08-29 | 2018-02-27 | 北京普惠实华科技有限公司 | A kind of safety-type absorbent charcoal adsorption tank oil-gas recovery method |
| CN110479028A (en) * | 2019-08-28 | 2019-11-22 | 中天科技精密材料有限公司 | A kind of oil vapor treatment system |
| CN111760416A (en) * | 2020-06-28 | 2020-10-13 | 程伟良 | Switching type fixed bed flue gas treatment system |
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