CN101596396A - A kind of method of deeply drying gas - Google Patents
A kind of method of deeply drying gas Download PDFInfo
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- CN101596396A CN101596396A CNA200910059712XA CN200910059712A CN101596396A CN 101596396 A CN101596396 A CN 101596396A CN A200910059712X A CNA200910059712X A CN A200910059712XA CN 200910059712 A CN200910059712 A CN 200910059712A CN 101596396 A CN101596396 A CN 101596396A
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Abstract
The present invention has announced a kind of method of moisture vapor mist depth drying moisture content, uses the method for multilayer segmentation absorption.The mist that contains water vapour is a unstripped gas, its degree of depth reduces the method for vapour content, it is characterized in that, use transformation and alternating temperature adsorbed gas separating technology, have two absorbers at least, unstripped gas obtains the Purge gas of low vapour content by one of them absorber, comprise at least two kinds of adsorbents in the absorber, leading portion is the but easy adsorbent of desorb a little less than the water vapour drying capacity, the strong adsorbent of easy not desorb of back segment water vapour drying capacity, the leading portion adsorbent can be by the most of adsorbed water of step-down process desorb.Simultaneously, effluent air can have regeneration function to the leading portion adsorbent during back segment adsorbent reactivation.Unstripped gas can be that hydrogen, carbon dioxide, carbon monoxide, methane, ethane, propane, butane, ethene, acetylene, nitrogen, oxygen, argon gas, helium and other can be used as the available raw materials of specialty such as chemical industry, metallurgy, aviation.
Description
One, technical field
The present invention relates to the gas separation field, is a kind of method of using part component in transformation absorption and the alternating temperature adsorption technology separating gas mixture.
Two, background technology
For the pure gas depth drying, the method for usually using is adsorbed as alternating temperature.Use temperature swing adsorption process, can use 5A, 4A, 13X equimolecular to sieve usually as drier.Because therefore regeneration difficulty behind 5A, 4A, the 13X equimolecular sieve adsorbed water steam needs investment much to be used for constructing device and the more regeneration of waste energy consumption.
Sieve the technological process as drier for whole use 5A, 4A, 13X equimolecular, because whole adsorbents all need to use the Gas reclamation adsorbent of high heat, therefore, the heat of aggregate demand is relatively just many.
Three, summary of the invention
In order to cut down the consumption of energy, reduce investment outlay simultaneously, the present invention utilizes the strategy of multistage absorption, is used for reducing the regeneration energy consumption.
Have two absorbers at least, unstripped gas obtains the Purge gas of low vapour content by one of them absorber; Comprise at least two kinds of adsorbents in the absorber, leading portion is the but easy adsorbent of desorb a little less than the water vapour drying capacity, the strong but adsorbent of not desorb easily of back segment water vapour drying capacity; Effluent air can have regeneration function to the leading portion adsorbent during back segment adsorbent reactivation.
Leading portion is the but easy adsorbent of desorb a little less than the water vapour drying capacity, can be the adsorbent of silica gel, aluminium oxide and other easy desorb moisture content.
The strong but adsorbent of not desorb easily of back segment water vapour drying capacity can be that 13x, 5A, 4A molecular sieve and other can degree of depth adsorbed water steam, is not easy the adsorbent of desorb moisture content, and the regeneration of this adsorbent must be used heat regeneration.
Sieve the technological process as drier for whole use 5A, 4A, 13X equimolecular, because whole adsorbents all need to use the Gas reclamation adsorbent of high heat, therefore, the heat of aggregate demand is relatively just many.
A little less than leading portion of the present invention uses adsorption capacity relatively, but the relatively easy adsorbent of desorb, and the back segment adsorbent use amount of adsorbing identical water vapour amount so reduces a lot.
The back segment adsorbent uses heat regeneration, and the back segment eluting gas of heat regeneration directly has regeneration function for the leading portion adsorbent, does not need to provide in addition the regeneration thermal source.
The minimizing of back segment adsorbent usage quantity, the direct result corresponding proportional minimizing of needed heat of regenerating exactly.
The unstripped gas that the present invention is alleged can be that hydrogen, carbon monoxide, methane, ethane, propane, butane, ethene, acetylene, nitrogen, oxygen, argon gas, helium and other can be used as the available raw materials of specialty such as chemical industry, metallurgy, aviation.
The pressure swing adsorption technique that the present invention is alleged can be that 2～12 adsorption towers are formed each level.
Four, the specific embodiment
Embodiment 1: certain gas density of hydrogen 99.9%, vapour content are 20 ℃ of dew points, need to reduce dew point to below-70 ℃.
Through being compressed to pressure is 0.3MPa (table), and through preliminary clearning, the mechanical water of removing in the gas becomes to be divided into unstripped gas, two adsorption towers are set, one of them adsorption tower is by unstripped gas, and adsorption tower exit gas concentration is that dew point arrives below-70 ℃, and the another one tower is used for reproducing adsorbent.Two cone pulleys change operation, obtain qualified Purge gas.
Three layers of adsorbent all are set in each adsorption tower, and ground floor is an activated alumina 1/3, and the second layer is that silica gel is 13X molecular sieve 1/3 for 1/3, the three layer.
Be in the adsorption tower of reproduced state, the leading portion adsorbent can be by the most of adsorbed water of step-down process desorb, simultaneously, adopt the 13X molecular sieve layer after drying is good purified gas purges heating, the water that makes 13X molecular sieve layer absorption is desorption gradually, and the sweep gas that flows out directly continues that to the water of silica gel and alumina adsorption desorption is arranged.
Embodiment 2: certain atmospheric CO concentration 99.99%, moisture content are 100ppm, need to reduce steam below 1ppm.
Through being compressed to pressure is 0.1MPa (table), and two adsorption towers are set, and one of them adsorption tower is by unstripped gas, and adsorption tower exit gas concentration is below the 1ppm, and the another one tower is used for reproducing adsorbent.
Two layers of adsorbent all are set in each adsorption tower, and ground floor is an activated alumina 2/3, and the second layer is a 13X molecular sieve 1/3.
Be in the adsorption tower of reproduced state, the leading portion adsorbent can be by the most of adsorbed water of step-down process desorb, adopt the 13X molecular sieve layer after drying is good purified gas purges heating simultaneously, the water that makes 13X molecular sieve layer absorption is desorption gradually, and the sweep gas that flows out directly continues that to the water of silica gel and alumina adsorption desorption is arranged.
Embodiment 3: certain gases methane concentration 99%, moisture content are 1%, need to reduce below the steam to 0.05%.
Through being compressed to pressure is 1.0MPa (table), and three adsorption towers are set, and one of them adsorption tower is by unstripped gas, and adsorption tower exit gas concentration is below 0.05%, and two other tower is used for reproducing adsorbent.
Two layers of adsorbent all are set in each adsorption tower, and ground floor is a silica gel 2/3, and the second layer is a 5A molecular sieve 1/3.
Be in the adsorption tower of reproduced state, the leading portion adsorbent can be by the most of adsorbed water of step-down process desorb, adopt the 5A molecular sieve layer after drying is good purified gas purges heating simultaneously, the water that makes 5A molecular sieve layer absorption is desorption gradually, and the sweep gas that flows out directly continues that to the water of silica gel absorption desorption is arranged.
The method that can use the adsorbent layering also can be used by connecting between tower and the tower, does not exceed scope of the present invention.
This patent uses through actual production process, has reduced the energy consumption in the depth drying process really, has saved cost.
Claims (4)
1, a kind of mist that contains water vapour is a unstripped gas, it reduces the method for vapour content, it is characterized in that, use transformation and alternating temperature adsorbed gas separating technology, and the step that process is following: (1) has two absorbers at least, and unstripped gas obtains the Purge gas of low vapour content by one of them absorber; (2) comprise at least two kinds of adsorbents in the absorber, leading portion is the but easy adsorbent of desorb a little less than the water vapour drying capacity, the strong but adsorbent of not desorb easily of back segment water vapour drying capacity; (3) effluent air can have regeneration function to the leading portion adsorbent during back segment adsorbent reactivation.
2, the alleged leading portion of claim 1 is the but easy adsorbent of desorb a little less than the water vapour drying capacity, can be the adsorbent of silica gel, aluminium oxide and other easy desorb moisture content.
3, the alleged strong adsorbent of easy not desorb of back segment water vapour drying capacity of claim 1, can be that 13x, 5A, 4A molecular sieve and other can degree of depth adsorbed water steam, be not easy the adsorbent of desorb moisture content, the regeneration of this adsorbent must be used heat regeneration.
4, the alleged unstripped gas of claim 1 can be that hydrogen, carbon dioxide, carbon monoxide, methane, ethane, propane, butane, ethene, acetylene, nitrogen, oxygen, argon gas, helium and other can be used as the available raw materials of specialty such as chemical industry, metallurgy, aviation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200910059712XA CN101596396A (en) | 2009-06-23 | 2009-06-23 | A kind of method of deeply drying gas |
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| CNA200910059712XA CN101596396A (en) | 2009-06-23 | 2009-06-23 | A kind of method of deeply drying gas |
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| CN101596396A true CN101596396A (en) | 2009-12-09 |
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| CNA200910059712XA Pending CN101596396A (en) | 2009-06-23 | 2009-06-23 | A kind of method of deeply drying gas |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013044732A1 (en) * | 2011-09-30 | 2013-04-04 | 新地能源工程技术有限公司 | Water removal and heavy-hydrocarbon removal process in liquefied natural gas production from mixed gas rich in methane |
| CN103071364A (en) * | 2012-12-25 | 2013-05-01 | 国电新能源技术研究院 | System and method for trapping carbon dioxide from flue gases in multi-stage manner |
| CN103495331A (en) * | 2013-10-11 | 2014-01-08 | 苏州竞立制氢设备有限公司 | Mixed bed hydrogen dryer |
| CN103521042A (en) * | 2013-10-18 | 2014-01-22 | 西安联合超滤净化设备有限公司 | Rare gas drying and recycling system |
| CN104084123A (en) * | 2014-07-25 | 2014-10-08 | 株洲高新技术产业开发区壹星科技有限公司 | Adsorption material applicable to adsorption type air dryer and combined adsorption method of adsorption material |
| CN104624017A (en) * | 2015-01-23 | 2015-05-20 | 四川省达科特能源科技股份有限公司 | Method for recovering light hydrocarbons from natural gas and oilfield associated gas |
| CN107614090A (en) * | 2015-05-19 | 2018-01-19 | 信实工业公司 | A kind of technique for being used to trap carbon dioxide from air-flow |
| CN114229844A (en) * | 2021-12-02 | 2022-03-25 | 四川天人化学工程有限公司 | Improved process for preparing carbon monoxide by pressure swing adsorption |
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- 2009-06-23 CN CNA200910059712XA patent/CN101596396A/en active Pending
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9404685B2 (en) | 2011-09-30 | 2016-08-02 | Xindi Energy Engineering Technology Co., Ltd. | Water removal and heavy-hydrocarbon removal process in liquefied natural gas production from mixed gas rich in methane |
| WO2013044732A1 (en) * | 2011-09-30 | 2013-04-04 | 新地能源工程技术有限公司 | Water removal and heavy-hydrocarbon removal process in liquefied natural gas production from mixed gas rich in methane |
| CN103071364A (en) * | 2012-12-25 | 2013-05-01 | 国电新能源技术研究院 | System and method for trapping carbon dioxide from flue gases in multi-stage manner |
| CN103071364B (en) * | 2012-12-25 | 2014-12-17 | 国电新能源技术研究院 | System and method for trapping carbon dioxide from flue gases in multi-stage manner |
| CN103495331A (en) * | 2013-10-11 | 2014-01-08 | 苏州竞立制氢设备有限公司 | Mixed bed hydrogen dryer |
| CN103521042A (en) * | 2013-10-18 | 2014-01-22 | 西安联合超滤净化设备有限公司 | Rare gas drying and recycling system |
| CN104084123A (en) * | 2014-07-25 | 2014-10-08 | 株洲高新技术产业开发区壹星科技有限公司 | Adsorption material applicable to adsorption type air dryer and combined adsorption method of adsorption material |
| CN104624017A (en) * | 2015-01-23 | 2015-05-20 | 四川省达科特能源科技股份有限公司 | Method for recovering light hydrocarbons from natural gas and oilfield associated gas |
| CN104624017B (en) * | 2015-01-23 | 2019-04-30 | 四川省达科特能源科技股份有限公司 | The method of lighter hydrocarbons is recycled in a kind of natural gas, associated gas |
| CN107614090A (en) * | 2015-05-19 | 2018-01-19 | 信实工业公司 | A kind of technique for being used to trap carbon dioxide from air-flow |
| CN107614090B (en) * | 2015-05-19 | 2021-03-16 | 信实工业公司 | Process for capturing carbon dioxide from a gas stream |
| CN114229844A (en) * | 2021-12-02 | 2022-03-25 | 四川天人化学工程有限公司 | Improved process for preparing carbon monoxide by pressure swing adsorption |
| CN114229844B (en) * | 2021-12-02 | 2024-03-22 | 四川天人化学工程有限公司 | Improved process for preparing carbon monoxide by pressure swing adsorption |
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Application publication date: 20091209 |