FR2382402A1 - PROCESS FOR MAKING LIQUID SULFUROUS ANHYDRIDE BY COMBUSTION OF SULFUR. - Google Patents

PROCESS FOR MAKING LIQUID SULFUROUS ANHYDRIDE BY COMBUSTION OF SULFUR.

Info

Publication number
FR2382402A1
FR2382402A1 FR7806248A FR7806248A FR2382402A1 FR 2382402 A1 FR2382402 A1 FR 2382402A1 FR 7806248 A FR7806248 A FR 7806248A FR 7806248 A FR7806248 A FR 7806248A FR 2382402 A1 FR2382402 A1 FR 2382402A1
Authority
FR
France
Prior art keywords
sulfur
combustion
making liquid
sulfurous anhydride
liquid sulfurous
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.)
Pending
Application number
FR7806248A
Other languages
French (fr)
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.)
Davy Powergas GmbH
Original Assignee
Davy Powergas GmbH
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 Davy Powergas GmbH filed Critical Davy Powergas GmbH
Publication of FR2382402A1 publication Critical patent/FR2382402A1/en
Pending 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
    • C01B17/54—Preparation of sulfur dioxide by burning elemental sulfur

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Treating Waste Gases (AREA)
  • Carbon And Carbon Compounds (AREA)

Abstract

L'invention a pour objet un procédé perfectionné de préparation de SO2 liquide par combustion du soufre en présence d'air suivie d'un refroidissement et d'une liquéfaction sous pression avec séparation de SO2 liquide Ce procédé est caractérisé en ce que le SO2 restant dans le gaz residuaire est oxydé en SO3 qui est transformé en H2 SO4 concentré par absorption; H2 SO4 est ensuite, au moins en partie, dissocié pour donner SO2 . Ce procédé fournit, comme produit secondaire, de l'acide sulfurique à une concentration utilisable.The subject of the invention is an improved process for preparing liquid SO2 by combustion of sulfur in the presence of air followed by cooling and pressurized liquefaction with separation of liquid SO2. This process is characterized in that the remaining SO2 in the waste gas is oxidized to SO3 which is transformed into concentrated H2 SO4 by absorption; H2 SO4 is then, at least in part, dissociated to give SO2. This process provides sulfuric acid at a usable concentration as a side product.

FR7806248A 1977-03-04 1978-03-03 PROCESS FOR MAKING LIQUID SULFUROUS ANHYDRIDE BY COMBUSTION OF SULFUR. Pending FR2382402A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2709455A DE2709455C2 (en) 1977-03-04 1977-03-04 Process for the production of liquid sulfur dioxide

Publications (1)

Publication Number Publication Date
FR2382402A1 true FR2382402A1 (en) 1978-09-29

Family

ID=6002776

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7806248A Pending FR2382402A1 (en) 1977-03-04 1978-03-03 PROCESS FOR MAKING LIQUID SULFUROUS ANHYDRIDE BY COMBUSTION OF SULFUR.

Country Status (5)

Country Link
DE (1) DE2709455C2 (en)
ES (1) ES467541A1 (en)
FR (1) FR2382402A1 (en)
GB (1) GB1554129A (en)
SE (1) SE7802118L (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AR033774A1 (en) * 2001-05-31 2004-01-07 Garcia Javier Angel Perez SULFUROUS ANHYDRIDE PLANT
CN109052335B (en) * 2018-07-24 2023-08-22 上海三夫工程技术有限公司 Method for preparing liquid sulfur dioxide and sulfuric acid by reducing waste sulfuric acid with sulfur gas
CN117205856A (en) * 2023-09-21 2023-12-12 福建天甫电子材料有限公司 Automatic control system for electronic grade sulfuric acid production and method for producing electronic grade sulfuric acid

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1359901A (en) * 1963-03-19 1964-04-30 Ass Chem Co Sulfur dioxide production process and installation for its implementation
JPS4899094A (en) * 1972-03-29 1973-12-15
GB1414258A (en) * 1973-02-14 1975-11-19 Celleco Ab Method of producing liquid sulphur dioxide

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1359901A (en) * 1963-03-19 1964-04-30 Ass Chem Co Sulfur dioxide production process and installation for its implementation
JPS4899094A (en) * 1972-03-29 1973-12-15
GB1414258A (en) * 1973-02-14 1975-11-19 Celleco Ab Method of producing liquid sulphur dioxide

Also Published As

Publication number Publication date
DE2709455C2 (en) 1979-01-25
SE7802118L (en) 1978-09-05
DE2709455B1 (en) 1978-05-24
GB1554129A (en) 1979-10-17
ES467541A1 (en) 1978-10-16

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