CN109603420A - A kind of activation method of decarburization pressure-swing absorber silica gel - Google Patents
A kind of activation method of decarburization pressure-swing absorber silica gel Download PDFInfo
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- CN109603420A CN109603420A CN201811312252.2A CN201811312252A CN109603420A CN 109603420 A CN109603420 A CN 109603420A CN 201811312252 A CN201811312252 A CN 201811312252A CN 109603420 A CN109603420 A CN 109603420A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/047—Pressure swing adsorption
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Abstract
The present invention relates to a kind of activation methods of silica gel in pressure-changeable adsorption decarbonization device, it is characterized in that adsorption tower outer wall is kept the temperature, 0.3 ~ 0.8MPa is overheated into 40 DEG C or more water vapours first and is passed through first adsorption tower from tower outlet, steam is mixed with stripping gas to flow out from adsorption tower import, gaseous mixture is sent into caustic scrubber, concentration of hydrogen sulfide is lower than after 5ppm in detection washing tower inlet gas, stop being sent into steam, change 150 ~ 260 DEG C of flue gases of temperature after being sent into blast furnace gas burning, amount of flue gas emission is silica gel in 4 times or more activation pressure-changeable adsorption decarbonization devices of adsorbent volume, flow out gas discharging directly into atmosphere, detection stream outlet dew-point temperature is lower than 15 DEG C, first adsorption tower activation is completed；Switch second adsorption tower, such circulate operation, until all adsorption towers all activate.
Description
Technical field
The present invention relates to environmental technology fields, are the regeneration methods of waste and old silica gel, thus reduce the consumption of adsorbent, and save
About silica gel resources of production.
Background technique
Pressure-variable adsorption silica gel after long-term use, is imitated since leading portion dehydrated adsorbent does not reach dehydration in some period
Fruit or desulfuration of shift gas agent Steam Recovery are incomplete, and pressure-variable adsorption silicon gel part performance can gradually be caused to inactivate, and adsorbent is not up to
To the purpose of effective carbon dioxide removal.
Due to having adsorbed water, desulfurizing agent type organic etc. in pressure-variable adsorption silica gel, can not be regenerated in pressure-swing absorption process,
Adsorbent will inactivate.For inactivating pressure-variable adsorption silica gel method of disposal, it is common there are two types of.
A kind of method is directly according to disposition of solid waste, and this method is usually to cheat to bury or be used as backfill.This side
Method does not recycle silica gel, and silica gel is disposed as quartz sand, is a kind of wasting of resources.
Another method is exactly directly to release that factory is sent to activate.It will appear pressure-variable adsorption in silica gel extraction process
Silica gel abrasion and damaged, extremely difficult the problems such as separating after aluminium oxide is mixed with silica gel, and packaging, transport difficulty are big, accordingly, it is possible to
The cost for sending factory to activate is not much different than purchasing the cost of new pressure-variable adsorption silica gel.Therefore, most enterprise all adopts
With disposition of solid waste principle, the method recycled without use factory.
The processing energy for having preferable waste water and desulfurizing agent type organic using unit of general pressure-changeable adsorption decarbonization device
Power, the recycled water and desulfurizing agent type organic of adsorbent are directly sent to treatment center of sewage.
The use unit of general pressure-changeable adsorption decarbonization device has 0.3 ~ 0.8MPa steam, this is provided just for silica gel activating
Sharp condition.
Temp.-changing adsorption dehydration often uses silica gel as water absorbing agent, can regenerate silicon well by improving adsorbent temperature
Glue, making deactivated silica gel again becomes fresh silica gel, and absorption property does not have decline.
The production process of pressure swing adsorption decarbonization silica gel has a secondary heating process, heating temperature usually at 150 DEG C or more,
Ensure that silica gel has preferable carbon dioxide adsorption ability.
Silica gel absorption has a small amount of hydrogen sulfide, in order to guarantee not pollute the environment after vulcanizing desorption, needs to vulcanization
Hydrogen carries out alkali cleaning processing.If high temperature air is sent directly into adsorption tower, it may cause Oxidation of Hydrogen Sulfide and cause local pore structure destruction.
Summary of the invention
The present invention is a kind of activation method of silica gel in pressure-changeable adsorption decarbonization device, and the heat preservation of adsorption tower outer wall is ensured heat
0.3 ~ 0.8MPa is overheated 40 DEG C or more water vapours first and is passed through first adsorption tower from tower outlet, overheats mesh by loss few as far as possible
Be reduce steam condensate (SC), steam heat adsorbent after, hydrogen sulfide, organic matter in adsorbent can desorb, vapor
It mixes with stripping gas and is flowed out from adsorption tower import, gaseous mixture is sent into caustic scrubber, and it is dense to detect hydrogen sulfide in washing tower inlet gas
For degree lower than after 5ppm, steam is sent into stopping.This method desorption hydrogen sulfide and organic matter can completely retain the pore structure of silica gel
It is not destroyed.After vulcanizing desorption, just it is not destroyed using oxygen-containing gas adsorbent pores structure.Change temperature after being sent into blast furnace gas burning
150 ~ 260 DEG C of flue gases are spent, amount of flue gas emission is 4 times or more of adsorbent volume, activates silica gel in pressure-changeable adsorption decarbonization device, outflow
Gas discharging directly into atmosphere, detection stream outlet dew-point temperature are lower than 15 DEG C, and first adsorption tower activation is completed；Switch second adsorption tower,
Such circulate operation, until all adsorption towers all activate.Water content is far below natural gas, coke oven in flue gas after blast furnace gas burning
Gas combustion product gases advantageously reduce the hot usage amount of silica gel activating dehydration.
Specific embodiment
The activation method of embodiment 1:4 platform 17 cubes of silica gel of pressure-changeable adsorption decarbonization device, first keeps the temperature adsorption tower outer wall,
0.35MPa is overheated 45 DEG C of water vapours first and is passed through first adsorption tower, steam and stripping gas from tower outlet by insulation thickness 60mm
Mixing is flowed out from adsorption tower import, and gaseous mixture is sent into caustic scrubber, is detected concentration of hydrogen sulfide in washing tower inlet gas and is lower than
After 5ppm, stop being sent into steam, change 155 DEG C of flue gases of temperature after being sent into blast furnace gas burning, amount of flue gas emission is 1500 cubes, and activation becomes
Silica gel in pressure absorption decarbonization device flows out gas discharging directly into atmosphere, 14.5 DEG C of detection stream outlet dew-point temperature, first adsorption tower activation
It completes；Switch second adsorption tower, such circulate operation, until all 4 adsorption towers all activate.
The activation method of embodiment 2:17 platform 37 cubes of silica gel of pressure-changeable adsorption decarbonization device, first protects adsorption tower outer wall
0.45MPa is overheated 41 DEG C of water vapours first and is passed through first adsorption tower, steam and solution from tower outlet by temperature, insulation thickness 80mm
Air-breathing mixing is flowed out from adsorption tower import, and gaseous mixture is sent into caustic scrubber, and it is low to detect concentration of hydrogen sulfide in washing tower inlet gas
After 5ppm, stop being sent into steam, change 200 DEG C of flue gases of temperature after being sent into blast furnace gas burning, amount of flue gas emission is 1500 cubes, activation
Silica gel in pressure-changeable adsorption decarbonization device, flows out gas discharging directly into atmosphere, 13.5 DEG C of detection stream outlet dew-point temperature, and first adsorption tower is lived
Change and completes；Switch second adsorption tower, such circulate operation, until all 17 adsorption towers all activate.
The activation method of embodiment 3:10 platform 160 cubes of silica gel of pressure-changeable adsorption decarbonization device, first protects adsorption tower outer wall
0.75MPa is overheated 41 DEG C of water vapours first and is passed through first adsorption tower, steam and solution from tower outlet by temperature, insulation thickness 100mm
Air-breathing mixing is flowed out from adsorption tower import, and gaseous mixture is sent into caustic scrubber, and it is low to detect concentration of hydrogen sulfide in washing tower inlet gas
After 5ppm, stop being sent into steam, change 250 DEG C of flue gases of temperature after being sent into blast furnace gas burning, amount of flue gas emission is 2500 cubes, activation
Silica gel in pressure-changeable adsorption decarbonization device, flows out gas discharging directly into atmosphere, 13.5 DEG C of detection stream outlet dew-point temperature, and first adsorption tower is lived
Change and completes；Switch second adsorption tower, such circulate operation, until all 10 adsorption towers all activate.
Claims (1)
1. the activation method of silica gel in a kind of pressure-changeable adsorption decarbonization device, it is characterised in that keep the temperature adsorption tower outer wall, first will
0.3 ~ 0.8MPa overheats 40 DEG C or more water vapours and is passed through first adsorption tower from tower outlet, and steam is mixed with stripping gas from adsorption tower
Import outflow, gaseous mixture are sent into caustic scrubber, and detecting concentration of hydrogen sulfide in washing tower inlet gas, lower than after 5ppm, stopping is sent into
Steam, changes 150 ~ 260 DEG C of flue gases of temperature after being sent into blast furnace gas burning, and amount of flue gas emission is that 4 times or more activation of adsorbent volume become
Silica gel in pressure absorption decarbonization device flows out gas discharging directly into atmosphere, and detection stream outlet dew-point temperature is lower than 15 DEG C, and first adsorption tower is living
Change and completes；Switch second adsorption tower, such circulate operation, until all adsorption towers all activate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811312252.2A CN109603420A (en) | 2018-11-06 | 2018-11-06 | A kind of activation method of decarburization pressure-swing absorber silica gel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811312252.2A CN109603420A (en) | 2018-11-06 | 2018-11-06 | A kind of activation method of decarburization pressure-swing absorber silica gel |
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| CN109603420A true CN109603420A (en) | 2019-04-12 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4259301A (en) * | 1979-07-30 | 1981-03-31 | Exxon Research And Engineering Co. | Removal of acidic compounds from gaseous mixtures |
| CN101342439A (en) * | 2007-07-09 | 2009-01-14 | 中国石油化工股份有限公司 | Hydrocarbons recovery method |
| CN103173256A (en) * | 2013-04-18 | 2013-06-26 | 四川科比科油气工程有限公司 | Natural gas multi-tower external cycle anaerobic regeneration dewatering method |
| JP2016022403A (en) * | 2014-07-16 | 2016-02-08 | 株式会社セピオテック | Regeneration process of adsorbent and regenerative apparatus |
| CN107115851A (en) * | 2016-02-25 | 2017-09-01 | 张超 | A kind of microwave heating regeneration method of air drying device of compressor |
-
2018
- 2018-11-06 CN CN201811312252.2A patent/CN109603420A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4259301A (en) * | 1979-07-30 | 1981-03-31 | Exxon Research And Engineering Co. | Removal of acidic compounds from gaseous mixtures |
| CN101342439A (en) * | 2007-07-09 | 2009-01-14 | 中国石油化工股份有限公司 | Hydrocarbons recovery method |
| CN103173256A (en) * | 2013-04-18 | 2013-06-26 | 四川科比科油气工程有限公司 | Natural gas multi-tower external cycle anaerobic regeneration dewatering method |
| JP2016022403A (en) * | 2014-07-16 | 2016-02-08 | 株式会社セピオテック | Regeneration process of adsorbent and regenerative apparatus |
| CN107115851A (en) * | 2016-02-25 | 2017-09-01 | 张超 | A kind of microwave heating regeneration method of air drying device of compressor |
Non-Patent Citations (2)
| Title |
|---|
| 严拯宇等: "《中药薄层色谱分析技术与应用》", 30 June 2009, 中国医药科技出版社 * |
| 王军玲等主编: "《北京市《大气污染物综合排放标准》实施技术指南》", 31 July 2013, 中国环境出版社 * |
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Application publication date: 20190412 |
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