GB1324809A - Process for purifying a gas stream - Google Patents

Process for purifying a gas stream

Info

Publication number
GB1324809A
GB1324809A GB5852270A GB5852270A GB1324809A GB 1324809 A GB1324809 A GB 1324809A GB 5852270 A GB5852270 A GB 5852270A GB 5852270 A GB5852270 A GB 5852270A GB 1324809 A GB1324809 A GB 1324809A
Authority
GB
United Kingdom
Prior art keywords
bath
liquor
ferric
sulphate
columns
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
GB5852270A
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.)
Alcatel CIT SA
Original Assignee
Alcatel CIT SA
Compagnie Industrielle de Telecommunication CIT Alcatel SA
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
Priority claimed from JP45013951A external-priority patent/JPS4817084B1/ja
Application filed by Alcatel CIT SA, Compagnie Industrielle de Telecommunication CIT Alcatel SA filed Critical Alcatel CIT SA
Publication of GB1324809A publication Critical patent/GB1324809A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/30—Circuit arrangements in which the lamp is fed by pulses, e.g. flash lamp
    • H05B41/32—Circuit arrangements in which the lamp is fed by pulses, e.g. flash lamp for single flash operation
    • 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
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/60—Simultaneously removing sulfur oxides and nitrogen oxides

Abstract

1324809 Purifying gas streams CIT COMPAGNIE INDUSTRIELLE DES TELECOMMUNICATIONS 9 Dec 1970 [9 Dec 1969] 58522/70 Heading B1R [Also in Division C1] Exhaust gas containing particles and oxides of sulphur and nitrogen is passed from burner 1 to and through column 2 cocurrent with wash liquor introduced at 3, and thence to and through column 6 countercurrent with wash liquor at 35-45‹C introduced at 7, before being vented to the atmosphere. The packing material 4 in columns 2, 6 is suitably chips of polyamide. The wash liquor used in both columns is supplied by pumps 14, 15 from bath 10 in which is contained finely divided iron or ferrous or ferric carbonate or oxide. In the case of gas containing oxides of sulphur, ferrous sulphate forms in the wash liquor and is returned from bath 9 to bath 10 while entrained particles are run off from bath 9. Part of the ferrous sulphate which is formed is eliminated in bath 12 by blowing air and possibly also a catalyst into the liquor at 16; ferric sulphate collects at 17 and is run off while solution is returned by pump 13 to bath 12. The ferric sulphate may thereafter be hydrolysed to sulphuric acid and ferric oxide, which latter may be returned to bath 10. Alternatively, excess ferrous sulphate in the liquor in bath 10 may be removed by cooling the liquor to below 30‹C and removing the crystallised salt which forms. If preferred, the liquor supplied to columns 2, 6 may be taken from bath 12 instead of bath 10, in which case the line returning liquor from bath 12 to bath 10 is unnecessary. Oxides ofnitrogen are removed in an analogous manner.
GB5852270A 1969-12-09 1970-12-09 Process for purifying a gas stream Expired GB1324809A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
FR6942558A FR2070561A5 (en) 1969-12-09 1969-12-09
JP11791469 1969-12-10
JP455570 1970-01-14
JP1395270 1970-02-18
JP45013951A JPS4817084B1 (en) 1970-02-18 1970-02-18

Publications (1)

Publication Number Publication Date
GB1324809A true GB1324809A (en) 1973-07-25

Family

ID=27515344

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5852270A Expired GB1324809A (en) 1969-12-09 1970-12-09 Process for purifying a gas stream

Country Status (7)

Country Link
BE (1) BE759934A (en)
CH (1) CH535065A (en)
DE (2) DE2060639A1 (en)
FR (1) FR2070561A5 (en)
GB (1) GB1324809A (en)
LU (1) LU62194A1 (en)
NL (1) NL7017914A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4016575A (en) * 1974-04-03 1977-04-05 Canon Kabushiki Kaisha Exposure control system for flash photography
DE2913329C2 (en) * 1979-04-03 1984-11-22 Dechema Deutsche Gesellschaft F. Chem. Apparatewesen E.V., 6000 Frankfurt Process for the separation of traces of gaseous pollutants based on sulfur from exhaust gases by chemical absorption
DE3505027A1 (en) * 1985-02-14 1986-08-14 Hölter, Heinz, Dipl.-Ing., 4390 Gladbeck Process for scrubbing SO2 and NOx in a multi-stage scrubber having multiple scrubbing liquid discharge and oxidising and reducing scrubbing liquid vessels

Also Published As

Publication number Publication date
CH535065A (en) 1973-03-31
FR2070561A5 (en) 1971-09-10
DE2060632A1 (en) 1972-02-17
NL7017914A (en) 1971-06-11
DE2060632B2 (en) 1974-06-20
BE759934A (en) 1971-06-07
DE2060632C3 (en) 1975-01-30
DE2060639A1 (en) 1971-06-09
LU62194A1 (en) 1971-08-13

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Legal Events

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