GB1150953A - Method for Converting Sulfur Dioxide to Sulfur Trioxide - Google Patents

Method for Converting Sulfur Dioxide to Sulfur Trioxide

Info

Publication number
GB1150953A
GB1150953A GB3429066A GB3429066A GB1150953A GB 1150953 A GB1150953 A GB 1150953A GB 3429066 A GB3429066 A GB 3429066A GB 3429066 A GB3429066 A GB 3429066A GB 1150953 A GB1150953 A GB 1150953A
Authority
GB
United Kingdom
Prior art keywords
sulphur
trioxide
mixture
ignition point
oxidation
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
GB3429066A
Inventor
Bernard George Mandelik
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.)
Pullman Inc
Original Assignee
Pullman Inc
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 Pullman Inc filed Critical Pullman Inc
Priority to GB3429066A priority Critical patent/GB1150953A/en
Publication of GB1150953A publication Critical patent/GB1150953A/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
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/69—Sulfur trioxide; Sulfuric acid
    • C01B17/74—Preparation
    • C01B17/76—Preparation by contact processes
    • C01B17/78—Preparation by contact processes characterised by the catalyst used
    • C01B17/79—Preparation by contact processes characterised by the catalyst used containing vanadium
    • 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
    • C01B17/69—Sulfur trioxide; Sulfuric acid
    • C01B17/74—Preparation
    • C01B17/76—Preparation by contact processes
    • C01B17/765—Multi-stage SO3-conversion

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Catalysts (AREA)

Abstract

1,150,953. Sulphur trioxide. PULLMAN Inc. 29 July, 1966, No. 34290/66. Heading C1A. Sulphur trioxide is prepared from a mixture, comprising sulphur dioxide and oxygen, by passing the mixture in contact with a first oxidation catalyst at a temperature above its ignition point (above 750‹ F.) to convert a proportion of the sulphur dioxide to sulphur trioxide ; cooling (after the exothermic reaction) to a temperature below the ignition point of the first catalyst but above that of a second oxidation catalyst of lower ignition point; and passing the mixture in contact with the second oxidation catalyst at said temperature, to convert a further proportion of sulphur dioxide to sulphur trioxide. First oxidation catalysts may be platinum on a carrier such as asbestos, manganese sulphate, silica or silica and alumina; or platinum group metals, or vanadium pentoxide. Second oxidation catalysts may be produced by impregnating the first oxidation catalysts with between 0À5 and 3% by weight of a suitable metal oxide such as P 2 O 5 or MoO 3 .
GB3429066A 1966-07-29 1966-07-29 Method for Converting Sulfur Dioxide to Sulfur Trioxide Expired GB1150953A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3429066A GB1150953A (en) 1966-07-29 1966-07-29 Method for Converting Sulfur Dioxide to Sulfur Trioxide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3429066A GB1150953A (en) 1966-07-29 1966-07-29 Method for Converting Sulfur Dioxide to Sulfur Trioxide

Publications (1)

Publication Number Publication Date
GB1150953A true GB1150953A (en) 1969-05-07

Family

ID=10363788

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3429066A Expired GB1150953A (en) 1966-07-29 1966-07-29 Method for Converting Sulfur Dioxide to Sulfur Trioxide

Country Status (1)

Country Link
GB (1) GB1150953A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4643887A (en) * 1982-08-26 1987-02-17 General Chemical Corporation Production of sulfur trioxide, sulfuric acid and oleum

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4643887A (en) * 1982-08-26 1987-02-17 General Chemical Corporation Production of sulfur trioxide, sulfuric acid and oleum

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees