GB1424457A - Selective adsorption process for air separation - Google Patents

Selective adsorption process for air separation

Info

Publication number
GB1424457A
GB1424457A GB350873A GB350873A GB1424457A GB 1424457 A GB1424457 A GB 1424457A GB 350873 A GB350873 A GB 350873A GB 350873 A GB350873 A GB 350873A GB 1424457 A GB1424457 A GB 1424457A
Authority
GB
United Kingdom
Prior art keywords
bed
oxygen
pressure
discharge end
nitrogen
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB350873A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Union Carbide Corp
Original Assignee
Union Carbide Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Union Carbide Corp filed Critical Union Carbide Corp
Publication of GB1424457A publication Critical patent/GB1424457A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B21/00—Nitrogen; Compounds thereof
    • C01B21/04—Purification or separation of nitrogen
    • C01B21/0405—Purification or separation processes
    • C01B21/0433—Physical processing only
    • C01B21/045—Physical processing only by adsorption in solids
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/106—Silica or silicates
    • B01D2253/108—Zeolites
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/30—Physical properties of adsorbents
    • B01D2253/302—Dimensions
    • B01D2253/304—Linear dimensions, e.g. particle shape, diameter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2256/00—Main component in the product gas stream after treatment
    • B01D2256/12—Oxygen
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/10—Single element gases other than halogens
    • B01D2257/102—Nitrogen
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/40—Further details for adsorption processes and devices
    • B01D2259/40007—Controlling pressure or temperature swing adsorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/40—Further details for adsorption processes and devices
    • B01D2259/40011—Methods relating to the process cycle in pressure or temperature swing adsorption
    • B01D2259/40013—Pressurization
    • B01D2259/40015—Pressurization with two sub-steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/40—Further details for adsorption processes and devices
    • B01D2259/40011—Methods relating to the process cycle in pressure or temperature swing adsorption
    • B01D2259/40013—Pressurization
    • B01D2259/40018—Pressurization with more than three sub-steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/40—Further details for adsorption processes and devices
    • B01D2259/40011—Methods relating to the process cycle in pressure or temperature swing adsorption
    • B01D2259/40028—Depressurization
    • B01D2259/4003—Depressurization with two sub-steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/40—Further details for adsorption processes and devices
    • B01D2259/40011—Methods relating to the process cycle in pressure or temperature swing adsorption
    • B01D2259/40028—Depressurization
    • B01D2259/40032—Depressurization with three sub-steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/40—Further details for adsorption processes and devices
    • B01D2259/40011—Methods relating to the process cycle in pressure or temperature swing adsorption
    • B01D2259/40028—Depressurization
    • B01D2259/40033—Depressurization with more than three sub-steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/40—Further details for adsorption processes and devices
    • B01D2259/40011—Methods relating to the process cycle in pressure or temperature swing adsorption
    • B01D2259/40035—Equalization
    • B01D2259/40041—Equalization with more than three sub-steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/40—Further details for adsorption processes and devices
    • B01D2259/40011—Methods relating to the process cycle in pressure or temperature swing adsorption
    • B01D2259/40043—Purging
    • B01D2259/4005—Nature of purge gas
    • B01D2259/40052—Recycled product or process gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/40—Further details for adsorption processes and devices
    • B01D2259/40011—Methods relating to the process cycle in pressure or temperature swing adsorption
    • B01D2259/40058—Number of sequence steps, including sub-steps, per cycle
    • B01D2259/40066—Six
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/40—Further details for adsorption processes and devices
    • B01D2259/40011—Methods relating to the process cycle in pressure or temperature swing adsorption
    • B01D2259/40058—Number of sequence steps, including sub-steps, per cycle
    • B01D2259/40071—Nine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/40—Further details for adsorption processes and devices
    • B01D2259/403—Further details for adsorption processes and devices using three beds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/40—Further details for adsorption processes and devices
    • B01D2259/404—Further details for adsorption processes and devices using four beds

Abstract

1424457 Pressure swing absorption UNION CARBIDE CORP 24 Jan 1973 [24 Jan 1972] 3508/73 Heading B1L An adiabatic pressure-swing separation of air by selectively absorbing nitrogen takes place alternately in at least three zeolitic molecularsieve absorption beds at ambient temperatures. In a cycle in which each bed assumes the position of a first bed in turn air is fed to the inlet of a first bed at highest superatmospheric pressure of 40-105 psia with nitrogen being absorbed and oxygen being discharged. At least part of this oxygen from the discharge end of the first bed is fed to a purged bed for partial repressurisation. The first bed is then depressurised to a lower superatmospheric pressure of 16-40 psia which releases oxygen from the first bed discharge end, part of which oxygen is used as product and the balance is used to repressurise or purge the other beds. The first bed is now depressurised by releasing waste gas, mainly nitrogen and subsequently introducing oxygen from another bed discharge to the discharge end of the first bed as a purge gas and following therethrough at a lowest superatmospheric pressure to desorb the nitrogen as waste gas. Oxygen is now introduced from another absorption bed at a pressure above said lowest superatmospheric pressure to at least partially repressurise the purged first bed and then the feed air is introduced to repeat the cycle. The ratio of the pressure of feed air to the first cocurrent depressurisation termination pressure is at least 1.5. The oxygen mass relationship of feed oxygen: oxygen gas from the first bed discharge end: oxygen return gas is 1:5 to 13.5:4 to 13.1.
GB350873A 1972-01-24 1973-01-24 Selective adsorption process for air separation Expired GB1424457A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US21994272A 1972-01-24 1972-01-24

Publications (1)

Publication Number Publication Date
GB1424457A true GB1424457A (en) 1976-02-11

Family

ID=22821365

Family Applications (1)

Application Number Title Priority Date Filing Date
GB350873A Expired GB1424457A (en) 1972-01-24 1973-01-24 Selective adsorption process for air separation

Country Status (16)

Country Link
JP (1) JPS549587B2 (en)
AT (1) AT358545B (en)
AU (1) AU475375B2 (en)
BE (1) BE794425A (en)
BR (1) BR7300495D0 (en)
CH (1) CH579944A5 (en)
DE (1) DE2303153A1 (en)
ES (1) ES410887A2 (en)
FR (1) FR2169162B2 (en)
GB (1) GB1424457A (en)
HK (1) HK66276A (en)
IL (1) IL41351A (en)
IT (1) IT1045927B (en)
NL (1) NL167332C (en)
SE (1) SE399826B (en)
ZA (1) ZA73482B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106807186A (en) * 2015-11-30 2017-06-09 中国国际海运集装箱(集团)股份有限公司 The standby main frame smoke processing system of extra large frock

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AR207266A1 (en) * 1974-10-30 1976-09-22 Union Carbide Corp ADIABATIC PRESSURE OSCILLATING PROCEDURE FOR AIR SEPARATION
US4013429A (en) * 1975-06-04 1977-03-22 Air Products And Chemicals, Inc. Fractionation of air by adsorption
US4077779A (en) * 1976-10-15 1978-03-07 Air Products And Chemicals, Inc. Hydrogen purification by selective adsorption
JPS5399091A (en) * 1977-02-10 1978-08-30 Osaka Sanso Kougiyou Kk Method of concentrating oxygen gas
JPS56154784U (en) * 1980-04-18 1981-11-19
JPS57136918A (en) * 1981-01-16 1982-08-24 Kuraiopurantsu Ltd Method of separating gas mixture
DE3144012A1 (en) * 1981-11-05 1983-05-19 Bayer Ag, 5090 Leverkusen PRESSURE CHANGE METHOD FOR SEPARATING GAS MIXTURES BY ADSORPTION
US4589888A (en) * 1984-10-05 1986-05-20 Union Carbide Corporation Pressure swing adsorption process
US4650500A (en) * 1985-02-22 1987-03-17 Union Carbide Corporation Enhanced pressure swing adsorption process and system
JPS61266302A (en) * 1985-05-17 1986-11-26 Seitetsu Kagaku Co Ltd Recovering method for concentrated oxygen
JPS63166702A (en) * 1986-12-26 1988-07-09 Osaka Oxygen Ind Ltd Concentration of oxygen gas
US5219935A (en) * 1987-12-19 1993-06-15 Rohm Gmbh Impact modified synthetic resins
DE3743199A1 (en) * 1987-12-19 1989-06-29 Roehm Gmbh IMPACT MODIFIER FOR PLASTICS

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT230858B (en) * 1960-10-05 1963-12-30 Union Carbide Corp Process for purifying a gas containing impurities
US3430418A (en) * 1967-08-09 1969-03-04 Union Carbide Corp Selective adsorption process
DE1769936C3 (en) * 1968-08-08 1980-09-18 Union Carbide Corp., New York, N.Y. (V.St.A.) Adiabatic process for separating one or more components from gas mixtures
US3564816A (en) 1968-12-30 1971-02-23 Union Carbide Corp Selective adsorption process

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106807186A (en) * 2015-11-30 2017-06-09 中国国际海运集装箱(集团)股份有限公司 The standby main frame smoke processing system of extra large frock

Also Published As

Publication number Publication date
HK66276A (en) 1976-10-29
JPS549587B2 (en) 1979-04-25
AT358545B (en) 1980-09-10
FR2169162A2 (en) 1973-09-07
AU5135273A (en) 1974-07-25
IT1045927B (en) 1980-06-10
BE794425A (en) 1973-07-23
JPS4883078A (en) 1973-11-06
AU475375B2 (en) 1976-08-19
SE399826B (en) 1978-03-06
IL41351A (en) 1976-01-30
BR7300495D0 (en) 1973-10-25
NL167332B (en) 1981-07-16
CH579944A5 (en) 1976-09-30
ES410887A2 (en) 1976-01-01
NL167332C (en) 1981-12-16
ATA55573A (en) 1980-02-15
DE2303153A1 (en) 1973-08-16
DE2303153C2 (en) 1988-02-18
FR2169162B2 (en) 1976-04-23
NL7300956A (en) 1973-07-26
ZA73482B (en) 1974-02-27

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee