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FR2157871A1 - Liquified sulphur dioxide mfr - by a two stage cooling process under pressure - Google Patents

Liquified sulphur dioxide mfr - by a two stage cooling process under pressure

Info

Publication number
FR2157871A1
FR2157871A1 FR7236683A FR7236683A FR2157871A1 FR 2157871 A1 FR2157871 A1 FR 2157871A1 FR 7236683 A FR7236683 A FR 7236683A FR 7236683 A FR7236683 A FR 7236683A FR 2157871 A1 FR2157871 A1 FR 2157871A1
Authority
FR
France
Prior art keywords
liquified
mfr
under pressure
cooling process
process under
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.)
Granted
Application number
FR7236683A
Other languages
French (fr)
Other versions
FR2157871B1 (en
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.)
Celleco AB
Original Assignee
Celleco AB
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 Celleco AB filed Critical Celleco AB
Publication of FR2157871A1 publication Critical patent/FR2157871A1/en
Application granted granted Critical
Publication of FR2157871B1 publication Critical patent/FR2157871B1/fr
Granted 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
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/48—Sulfur dioxide; Sulfurous acid
    • C01B17/50—Preparation of sulfur dioxide

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Drying Of Gases (AREA)
  • Treating Waste Gases (AREA)

Abstract

Liquid SO2 is made by direct condensation from combustion gases. The gases, at 7-10 atmos., are cooled in two stages; firstly by a direct step involving contact with saturated aq. SO2 soln. and an indirect step using coils, and secondly, after drying, pref. with H2SO4, by freon coils, the liquid SO2 then being drawn off. Residual gases are heated with the heat extracted in the indirect first cooling stage. Any residual SO2 is absorbed in water which is then fed into the direct first cooling stage. The process is economic, suitable for automatic operation and uses apparatus of smaller size than existing plants. It is esp. suitable for the cellulose and sugar industries.
FR7236683A 1971-10-25 1972-10-17 Liquified sulphur dioxide mfr - by a two stage cooling process under pressure Granted FR2157871A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE1351971A SE362058B (en) 1971-10-25 1971-10-25

Publications (2)

Publication Number Publication Date
FR2157871A1 true FR2157871A1 (en) 1973-06-08
FR2157871B1 FR2157871B1 (en) 1975-03-28

Family

ID=20297527

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7236683A Granted FR2157871A1 (en) 1971-10-25 1972-10-17 Liquified sulphur dioxide mfr - by a two stage cooling process under pressure

Country Status (6)

Country Link
JP (1) JPS5632538B2 (en)
CA (1) CA969092A (en)
DE (1) DE2247334B2 (en)
FR (1) FR2157871A1 (en)
IT (1) IT969636B (en)
SE (1) SE362058B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2926591C2 (en) * 1979-06-30 1986-06-05 Uhde Gmbh, 4600 Dortmund Process for purifying chlorine
JPS61111343U (en) * 1984-12-26 1986-07-14

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2564452A (en) * 1946-03-01 1951-08-14 Kaukas Fabrik Ab Method for recovering sulfur dioxide in liquid form

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3349569A (en) * 1966-02-14 1967-10-31 Chemical Construction Corp Anhydrous ammonia scrubbing of ammonia synthesis gas
US3534562A (en) * 1967-04-14 1970-10-20 Koninklujke Nl Zout Ind Nv Method of liquefying gaseous chlorine containing water vapour

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2564452A (en) * 1946-03-01 1951-08-14 Kaukas Fabrik Ab Method for recovering sulfur dioxide in liquid form

Also Published As

Publication number Publication date
DE2247334A1 (en) 1973-04-26
SE362058B (en) 1973-11-26
JPS5632538B2 (en) 1981-07-28
IT969636B (en) 1974-04-10
FR2157871B1 (en) 1975-03-28
CA969092A (en) 1975-06-10
JPS4850992A (en) 1973-07-18
DE2247334B2 (en) 1981-01-22

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Legal Events

Date Code Title Description
ST Notification of lapse