CN110394026A - Extensive pressure-variable adsorption step air-separating plant - Google Patents

Extensive pressure-variable adsorption step air-separating plant Download PDF

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Publication number
CN110394026A
CN110394026A CN201910666399.XA CN201910666399A CN110394026A CN 110394026 A CN110394026 A CN 110394026A CN 201910666399 A CN201910666399 A CN 201910666399A CN 110394026 A CN110394026 A CN 110394026A
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China
Prior art keywords
pressure
molecular sieve
tower
adsorption
swing absorber
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CN201910666399.XA
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乔英云
田一良
田原宇
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China University of Petroleum East China
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China University of Petroleum East China
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Priority to CN201910666399.XA priority Critical patent/CN110394026A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/02Separation 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/02Separation 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
    • B01D53/04Separation 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
    • B01D53/047Pressure swing adsorption
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/02Separation 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
    • B01D53/04Separation 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
    • B01D53/047Pressure swing adsorption
    • B01D53/0476Vacuum pressure swing adsorption
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/26Drying gases or vapours
    • B01D53/261Drying gases or vapours by adsorption
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B13/00Oxygen; Ozone; Oxides or hydroxides in general
    • C01B13/02Preparation of oxygen
    • C01B13/0229Purification or separation processes
    • C01B13/0248Physical processing only
    • C01B13/0259Physical processing only by adsorption on solids
    • C01B13/0262Physical processing only by adsorption on solids characterised by the adsorbent
    • C01B13/027Zeolites
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B13/00Oxygen; Ozone; Oxides or hydroxides in general
    • C01B13/02Preparation of oxygen
    • C01B13/0229Purification or separation processes
    • C01B13/0248Physical processing only
    • C01B13/0259Physical processing only by adsorption on solids
    • C01B13/0262Physical processing only by adsorption on solids characterised by the adsorbent
    • C01B13/0274Other molecular sieve materials
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2253/00Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10Inorganic adsorbents
    • B01D2253/106Silica or silicates
    • B01D2253/108Zeolites
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2253/00Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10Inorganic adsorbents
    • B01D2253/116Molecular sieves other than zeolites
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2256/00Main component in the product gas stream after treatment
    • B01D2256/12Oxygen
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2257/00Components to be removed
    • B01D2257/50Carbon oxides
    • B01D2257/504Carbon dioxide
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2257/00Components to be removed
    • B01D2257/80Water
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2259/00Type of treatment
    • B01D2259/40Further details for adsorption processes and devices
    • B01D2259/40011Methods relating to the process cycle in pressure or temperature swing adsorption
    • B01D2259/40043Purging
    • B01D2259/4005Nature of purge gas
    • B01D2259/40052Recycled product or process gas
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02CCAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
    • Y02C20/00Capture or disposal of greenhouse gases
    • Y02C20/40Capture or disposal of greenhouse gases of CO2

Abstract

The present invention provides a kind of extensive pressure-variable adsorption step air-separating plant.Air pressurized fan outlet is connected by dehydration carbon dioxide removal adsorption tower with the entrance of radial zeolite molecular sieve pressure-swing absorber group, and tower group entrance is respectively arranged with sequencing valve, and is connected to drawdown pump in the entrance of radial zeolite molecular sieve pressure-swing absorber group;The outlet of radial zeolite molecular sieve pressure-swing absorber group is connected by sequencing valve with the entrance of carbon molecular sieve pressure-swing absorber group, and the outlet of tower group is connected to drawdown pump;Pressure-swing absorber group realizes that part adsorption tower adsorbing separation, partial adsorbates tower desorption and regeneration are recycled by sequencing valve.

Description

Extensive pressure-variable adsorption step air-separating plant
1. technical field
The present invention provides extensive pressure-variable adsorption step air-separating plant, belongs to technical field of air separation.
2. background technique
The productions such as Modern Coal-based Chemical, metallurgical industry, petroleum refining and sulfuric acid industry need to consume a large amount of oxygen, and to nitrogen The demand of gas is smaller.In existing oxygen production method, air separating method is most economical industrial oxygenerating method.Currently, in sky In gas separation field, cryogenic rectification method (cryogenic separation) is traditional method for producing oxygen through, and pressure swing adsorption method and membrane separation process are emerging Method for producing oxygen through.Cryogenic rectification method technology maturation, be suitable for be mass produced high pressure oxygen and high pressure nitrogen, can obtain it is high-purity The oxygen and nitrogen of degree, and the rate of recovery is very high, but oxygen and nitrogen output be than too small, only 21:78 (volume ratio), it is difficult to meet The industrial process of high oxygen consumption low consumption nitrogen needs.Pressure-variable adsorption law technology is more mature, is suitable for middle and small scale production oxygen, can obtain To the low oxygen of medium purity, the discharge of nitrogen low pressure, but influenced since the inert gases such as argon gas, helium and neon fail separation Oxygen purity further increase and the rate of recovery is to be improved.Membrane separation process technology is being developed, and small and extra small scale is suitable for Production oxygen, the oxygen that low concentration can be obtained, high investment and the seperation film that there is no heavy industrialization to apply.
But acetylene is produced for coal oxygen-enriched combusting, semicoke oxygen thermal method, metal oxygen thermal reduction is smelted, Heavy Oil Thermal gasifies The production processes such as coupling and sulfuric acid industry need to consume a large amount of low oxygen, and smaller to the demand of nitrogen, using deep cooling Separation investment is excessive with energy consumption and loss oxygen pressure potential energy, urgent need develop extensive pressure changeable adsorption air-separating technology and dress It is standby, meet the needs of modern industry is to low pressure high-purity oxygen.
3. summary of the invention
In order to overcome deficiency existing for existing air PSA Technology, the purpose of the present invention is develop a kind of big rule Mould pressure-variable adsorption step air-separating plant, the device can increase substantially the scale and oxygen of the separation of air pressure-variable adsorption Purity reduces energy consumption that high pure oxygen is produced and the on a large scale dosage of the investment of oxygen processed and metal material.
Device of the present invention increases substantially the rule of air pressure-variable adsorption separation using radial pressure-swing absorber Mould reduces high-purity oxygen separating energy consumption, is inhaled by zeolite molecular sieve pressure-swing absorber group selection absorption nitrogen, carbon molecular sieve transformation The combination measure of attached tower group selection adsorption of oxygen considerably reduces the inert gases such as argon gas, helium and neon in oxygen and contains Amount, to improve the purity and the rate of recovery of oxygen, while also can be obtained the nitrogen of high-purity, to realize the big rule of air Mould, low pressure, high-purity, low energy consumption step pressure-variable adsorption separation.
Extensive pressure-variable adsorption step air-separating plant of the invention is characterized in: air pressurized fan outlet passes through dehydration Carbon dioxide removal adsorption tower is connected with the entrance of radial zeolite molecular sieve pressure-swing absorber group, and tower group entrance is respectively arranged with program-controlled Valve, and drawdown pump is connected in the entrance of radial zeolite molecular sieve pressure-swing absorber group;Radial zeolite molecular sieve pressure-swing absorber group Outlet be connected with the entrance of carbon molecular sieve pressure-swing absorber group by sequencing valve, the outlet of tower group is connected to drawdown pump;Transformation is inhaled Attached tower group realizes that part adsorption tower adsorbing separation, partial adsorbates tower desorption and regeneration are recycled by sequencing valve.
In the present invention, the zeolite molecular sieve loaded in radial zeolite molecular sieve pressure-swing absorber group is 5A molecular sieve, lithium X One of type molecular sieve, lithium A type molecular sieve, 13X type molecular sieve and its alkali-earth metal modified molecular sieve.
In the present invention, pressure-variable adsorption separator is Vacuum Pressure Swing Adsorption or low pressure pressure swing adsorption operations.
In the present invention, carbon molecular sieve pressure-swing absorber is radial pressure-swing absorber or axial pressure-swing absorber.
In the present invention, radial pressure-swing absorber successively presses concentric circles cloth by tower wall, isolating cylinder and central tube ecto-entad It sets, the top of isolating cylinder and central tube forms adsorption section closed upper part by adsorbent pressure plate;Tower wall and isolating cylinder are formed The gas chamber that portion is shut, isolating cylinder and isolating cylinder form auxiliary adsorption chamber, isolating cylinder and central, tubular into adsorption chamber, bottom in central tube Portion is arranged anti-dead zone and is oriented to cone cylinder;Tower wall bottom sides connect tangential admission mouth, and connection central tube setting in absorption tail gas outlet exists Top of tower;Tower wall, central tube and isolating cylinder and bottom plate are tightly connected;Auxiliary adsorption chamber and adsorption chamber bottom are installed auxiliary respectively and are inhaled Attached dose of discharge port and adsorbent discharge port.
In the present invention, the isolated oxygen-enriched air concentration of air radial direction zeolite molecular sieve pressure-swing absorber group is 50%-85%.
4. Detailed description of the invention
Fig. 1 is the device of the invention schematic diagram.
Description of symbols
1. blower, the 2. dehydration pre- adsorption towers of carbon dioxide removal, 3. radial zeolite molecular sieve pressure-swing absorbers, 4. drawdown pumps, 5. carbon molecular sieve pressure-swing absorber, 6. sequencing valves.
The device of the invention feature is described in detail below with reference to Fig. 1 and embodiment.
5. specific embodiment
Following embodiment is according to extensive pressure-variable adsorption step air-separating plant shown in FIG. 1.The tool of process described in Fig. 1 Body includes:
Filtered air is after the pressurization of blower 1, after being pre-processed by dehydration and carbon dioxide removal adsorption tower 2, it is dry and The forced air of carbon dioxide removal first passes through radial 3 adsorbing separation of zeolite molecular sieve pressure-swing absorber, and nitrogen is by zeolite molecular sieve Absorption, oxygen-enriched air flow out zeolite molecular sieve pressure-swing absorber 3;Switch zeolite molecular sieve pressure-swing absorber 3 by sequencing valve 6 Group, high pure nitrogen is depressurized pump 4 and desorbs from the decompression of zeolite molecular sieve pressure-swing absorber 3 to be sent outside or outlet as product, boiling Stone molecular sieve pressure-swing absorber 3 is recycled.The oxygen-enriched air of outflow zeolite molecular sieve pressure-swing absorber 3 enters carbon molecular sieve change Adsorption tower 5 is pressed, oxygen is adsorbed by carbon molecular sieve, and remaining nitrogen, argon gas and helium etc. flow out outside carbon molecular sieve pressure-swing absorber 5 Row;Switch carbon molecular sieve pressure-swing absorber 5 by sequencing valve 6, high-purity oxygen is depressurized pump 4 from carbon molecular sieve pressure-swing absorber Decompression is desorbed in 5 sends outside as product, and carbon molecular sieve pressure-swing absorber 5 is recycled.Pressure-swing absorber group passes through program-controlled Valve realizes that part adsorption tower adsorbing separation, partial adsorbates tower desorption and regeneration are recycled.
The zeolite molecular sieve loaded in the radial zeolite molecular sieve pressure-swing absorber group is 5A molecular sieve, lithium X-type point One of sub- sieve, lithium A type molecular sieve, 13X type molecular sieve and its alkali-earth metal modified molecular sieve.
The pressure-variable adsorption separator is Vacuum Pressure Swing Adsorption or low pressure pressure swing adsorption operations.
The carbon molecular sieve pressure-swing absorber is radial pressure-swing absorber or axial pressure-swing absorber.
The radial pressure-swing absorber successively presses arranged in concentric circles by tower wall, isolating cylinder and central tube ecto-entad, every Adsorption section closed upper part is formed by adsorbent pressure plate from the top of cylinder and central tube;Tower wall forms top with isolating cylinder and shuts Gas chamber, isolating cylinder and isolating cylinder form auxiliary adsorption chamber, isolating cylinder and central, tubular into adsorption chamber, bottom setting in central tube Anti- dead zone is oriented to cone cylinder;Tower wall bottom sides connect tangential admission mouth, and connection central tube in absorption tail gas outlet is arranged in top of tower; Tower wall, central tube and isolating cylinder and bottom plate are tightly connected;Auxiliary adsorption chamber and adsorption chamber bottom are installed additional adsorbents respectively and are unloaded Material mouth and adsorbent discharge port.
The isolated oxygen-enriched air concentration of the air radial direction zeolite molecular sieve pressure-swing absorber group is 50%- 85%.
Embodiment 1
The zeolite molecular sieve of the present embodiment processing is lithium A type molecular sieve, and pressure-variable adsorption separator is Vacuum Pressure Swing Adsorption, Carbon molecular sieve pressure-swing absorber is radial pressure-swing absorber:
Process is as follows:
Filtered air is after the pressurization of blower 1, after being pre-processed by dehydration and carbon dioxide removal adsorption tower 2, it is dry and The forced air of carbon dioxide removal first passes through radial 3 adsorbing separation of zeolite molecular sieve Vacuum Pressure Swing Adsorption tower, and nitrogen is by lithium A type point Son sieve absorption, 70% oxygen-enriched air flow out zeolite molecular sieve Vacuum Pressure Swing Adsorption tower 3;Switch zeolite molecules by sequencing valve 6 Vacuum Pressure Swing Adsorption tower 3 is sieved, high pure nitrogen is depressurized pump 4 and desorbs from the decompression of zeolite molecular sieve pressure-swing absorber 3 as production Product are sent outside, and zeolite molecular sieve Vacuum Pressure Swing Adsorption tower 3 is recycled;Flow out the 70% of zeolite molecular sieve Vacuum Pressure Swing Adsorption tower 3 Oxygen-enriched air enters radial carbon molecular sieve Vacuum Pressure Swing Adsorption tower 5, and oxygen is adsorbed by carbon molecular sieve, remaining nitrogen, argon gas and helium 5 outlet of the outflows radial direction carbon molecular sieve Vacuum Pressure Swing Adsorption such as gas tower;Switch carbon radial direction molecular sieve Vacuum Pressure Swing by sequencing valve 6 to inhale Attached tower 5, high-purity oxygen are depressurized pump 4 and desorb outside as product from the decompression of radial carbon molecular sieve Vacuum Pressure Swing Adsorption tower 5 Decompression desorption is sent to send outside as product, radial carbon molecular sieve Vacuum Pressure Swing Adsorption tower 5 is recycled.Pressure-swing absorber group passes through journey It controls valve and realizes that part adsorption tower adsorbing separation, partial adsorbates tower desorption and regeneration are recycled.
The results show that oxygen purity reaches 99.95% in the technique of embodiment 1, the rate of recovery is greater than 95%;Nitrogen gas purity is 95%, the rate of recovery 85%;Relative low temperature rectification method oxygen separation energy consumption reduces by 35%.
Embodiment 2
The zeolite molecular sieve of the present embodiment processing is 5A type molecular sieve, and pressure-variable adsorption separator is low pressure pressure-variable adsorption, Carbon molecular sieve pressure-swing absorber is axial pressure-swing absorber:
Process is as follows:
Filtered air is after the pressurization of blower 1, after being pre-processed by dehydration and carbon dioxide removal adsorption tower 2, it is dry and The forced air of carbon dioxide removal first passes through radial 3 adsorbing separation of zeolite molecular sieve low pressure pressure-swing absorber, and nitrogen is by 5A type point Son sieve absorption, 65% oxygen-enriched air flow out zeolite molecular sieve low pressure pressure-swing absorber 3;Switch zeolite molecules by sequencing valve 6 Low pressure pressure-swing absorber 3 is sieved, high pure nitrogen is depressurized pump 4 and desorbs from the decompression of zeolite molecular sieve pressure-swing absorber 3 as production Product are sent outside, and zeolite molecular sieve low pressure pressure-swing absorber 3 is recycled;Flow out the 65% of zeolite molecular sieve low pressure pressure-swing absorber 3 Oxygen-enriched air enters radial carbon molecular sieve low pressure pressure-swing absorber 5, and oxygen is adsorbed by carbon molecular sieve, remaining nitrogen, argon gas and helium 5 outlet of the outflows axial direction carbon molecular sieve low pressure such as gas pressure-swing absorber;Switch carbon axial element by sequencing valve 6 and sieves the suction of low pressure transformation Attached tower 5, high-purity oxygen are depressurized pump 4 and desorb outside as product from the decompression of radial carbon molecular sieve Vacuum Pressure Swing Adsorption tower 5 Decompression desorption is sent to send outside as product, axial carbon molecular sieve low pressure pressure-swing absorber 5 is recycled.Pressure-swing absorber group passes through journey It controls valve and realizes that part adsorption tower adsorbing separation, partial adsorbates tower desorption and regeneration are recycled.
The results show that oxygen purity reaches 99% in the technique of embodiment 1, the rate of recovery is greater than 95%;Nitrogen gas purity is 93%, the rate of recovery 80%;Relative low temperature rectification method oxygen separation energy consumption reduces by 25%.
Extensive pressure-variable adsorption step air-separating plant provided by the present invention, makes transformation using radial pressure-swing absorber The processing capacity of absorption space division significantly improves, and can achieve 30000m3/ h or more reaches the working ability of cryogenic rectification space division; By zeolite molecular sieve pressure-swing absorber elder generation selective absorption nitrogen, carbon molecular sieve pressure-swing absorber reselection adsorption of oxygen The oxygen purity of air separation by PSA is greatly improved in combination measure, and it is lazy to reduce argon gas, helium and neon in oxygen etc. Property gas content, reached the separating effect of cryogenic rectification space division, but high-purity oxygen separating energy consumption cryogenic rectification space division reduces by 25% More than, thus realize air extensive, low pressure, high-purity, low energy consumption the separation of pressure-variable adsorption step.

Claims (6)

1. extensive pressure-variable adsorption step air-separating plant, which is characterized in that air pressurized fan outlet passes through dehydration de- two Carbonoxide adsorption tower is connected with the entrance of radial zeolite molecular sieve pressure-swing absorber group, and tower group entrance is respectively arranged with sequencing valve, and Drawdown pump is connected in the entrance of radial zeolite molecular sieve pressure-swing absorber group;The outlet of radial zeolite molecular sieve pressure-swing absorber group It is connected by sequencing valve carbon molecular sieve with the entrance of pressure-swing absorber group, the outlet of tower group is connected to drawdown pump;Pressure-swing absorber group Realize that part adsorption tower adsorbing separation, partial adsorbates tower desorption and regeneration are recycled by sequencing valve.
2. extensive pressure-variable adsorption step air-separating plant according to claim 1, which is characterized in that radial zeolite point The zeolite molecular sieve loaded in son sieve pressure-swing absorber group is 5A molecular sieve, lithium X-type molecular sieve, lithium A type molecular sieve, 13X type point One of son sieve and its alkali-earth metal modified molecular sieve.
3. extensive pressure-variable adsorption step air-separating plant according to claim 1, which is characterized in that pressure-variable adsorption point It is Vacuum Pressure Swing Adsorption or low pressure pressure swing adsorption operations from device.
4. extensive pressure-variable adsorption step air-separating plant according to claim 1, which is characterized in that carbon molecular sieve becomes Pressing adsorption tower is radial pressure-swing absorber or axial pressure-swing absorber.
5. extensive pressure-variable adsorption step air-separating plant according to claim 1, which is characterized in that radial transformation is inhaled Attached tower successively presses arranged in concentric circles by tower wall, isolating cylinder and central tube ecto-entad, passes through suction at the top of isolating cylinder and central tube Attached dose of pressure plate forms adsorption section closed upper part;Tower wall and isolating cylinder form the gas chamber that top is shut, isolating cylinder with tubular is isolated At auxiliary adsorption chamber, isolating cylinder and central, tubular are at adsorption chamber, and bottom is arranged anti-dead zone and is oriented to cone cylinder in central tube;Tower wall bottom Side connects tangential admission mouth, and connection central tube in absorption tail gas outlet is arranged in top of tower;Tower wall, central tube and isolating cylinder and bottom Plate is tightly connected;Additional adsorbents discharge port and adsorbent discharge port are installed in auxiliary adsorption chamber and adsorption chamber bottom respectively.
6. extensive pressure-variable adsorption step air-separating plant according to claim 1, which is characterized in that air radially boils The isolated oxygen-enriched air concentration of stone molecular sieve pressure-swing absorber group is 50%-85%.
CN201910666399.XA 2019-07-23 2019-07-23 Extensive pressure-variable adsorption step air-separating plant Pending CN110394026A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112960650A (en) * 2021-03-01 2021-06-15 上海穗杉实业股份有限公司 Method and device for preparing high-purity oxygen based on coupling separation technology
CN114933431A (en) * 2022-04-21 2022-08-23 临沂宏源热力有限公司 High-efficient separation control system of gypsum moisture

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112960650A (en) * 2021-03-01 2021-06-15 上海穗杉实业股份有限公司 Method and device for preparing high-purity oxygen based on coupling separation technology
CN112960650B (en) * 2021-03-01 2023-09-22 上海穗杉实业股份有限公司 Method and device for preparing high-purity oxygen based on coupling separation technology
CN114933431A (en) * 2022-04-21 2022-08-23 临沂宏源热力有限公司 High-efficient separation control system of gypsum moisture

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