GB1175055A - Production of sulphuric acid - Google Patents

Production of sulphuric acid

Info

Publication number
GB1175055A
GB1175055A GB5398565A GB5398565A GB1175055A GB 1175055 A GB1175055 A GB 1175055A GB 5398565 A GB5398565 A GB 5398565A GB 5398565 A GB5398565 A GB 5398565A GB 1175055 A GB1175055 A GB 1175055A
Authority
GB
United Kingdom
Prior art keywords
catalyst
sulphuric acid
water
gases
gas
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
GB5398565A
Inventor
Richard Line Hummel
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.)
Electric Reduction Company of Canada Ltd
Original Assignee
Electric Reduction Company of Canada Ltd
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 Electric Reduction Company of Canada Ltd filed Critical Electric Reduction Company of Canada Ltd
Priority to GB5398565A priority Critical patent/GB1175055A/en
Publication of GB1175055A publication Critical patent/GB1175055A/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
    • C01B17/765—Multi-stage SO3-conversion

Abstract

1,175,055. Contact process; sulphuric acid. ELECTRIC REDUCTION CO. OF CANADA Ltd. 19 Dec., 1966 [20 Dec., 1965], No. 53985/65. Heading C1A. Sulphuric acid is prepared by reacting sulphur dioxide with oxygen in the presence of a catalyst to form sulphur trioxide, cooling the partially reacted gases in the presence of water vapour to yield sulphuric acid, and reacting the residual gases in the presence of a catalyst to form more sulphur trioxide. Preferably, the gases are passed alternately through a plurality of catalyst zones and condensers and the gas leaving the final catalyst zone is scrubbed with sulphuric acid. The water vapour may be added before or after the catalyst stage, and is preferably in a concentration such that oleum is produced in all stages but the last where more water is used to give complete absorption. Cooling is carried out either by evaporation of water at elevated pressures, or by contact with heat exchange surfaces at successively lower temperatures, each below the dew point of the gas, but above the temperature at which the gas spontaneously nucleates to form a mist. The temperature in the catalyst zone.is preferably between 380‹ and 620‹ C., and the reactor is preferably made of a ceramic material such as porcelain, metals coated with resistant materials such as polytetrafluoroethylene or silicon-iron or nickel alloys.
GB5398565A 1965-12-20 1965-12-20 Production of sulphuric acid Expired GB1175055A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5398565A GB1175055A (en) 1965-12-20 1965-12-20 Production of sulphuric acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5398565A GB1175055A (en) 1965-12-20 1965-12-20 Production of sulphuric acid

Publications (1)

Publication Number Publication Date
GB1175055A true GB1175055A (en) 1969-12-23

Family

ID=10469589

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5398565A Expired GB1175055A (en) 1965-12-20 1965-12-20 Production of sulphuric acid

Country Status (1)

Country Link
GB (1) GB1175055A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0130967A1 (en) * 1983-07-05 1985-01-09 Monsanto Company Heat recovery from concentrated sulfuric acid
US4670242A (en) * 1984-11-09 1987-06-02 Monsanto Company Heat recovery from concentrated sulfuric acid
DE102007013983B3 (en) * 2006-04-27 2007-12-13 Plinke Gmbh Device for the purification of waste sulfuric acid, comprises reactor, circulation pump, vertically or horizontally arranged heat exchangers having inner and outer tubes, mixer for oxidation agent and the acid, and connection pipelines
DE102007059802B3 (en) * 2007-12-11 2008-08-28 Plinke Gmbh Apparatus for recovering pure sulfuric acid by evaporation, includes corrosion- and thermal stress-resistant heat exchanger with silicon-containing cast steel inner tube and steel outer tube

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0130967A1 (en) * 1983-07-05 1985-01-09 Monsanto Company Heat recovery from concentrated sulfuric acid
US4670242A (en) * 1984-11-09 1987-06-02 Monsanto Company Heat recovery from concentrated sulfuric acid
DE102007013983B3 (en) * 2006-04-27 2007-12-13 Plinke Gmbh Device for the purification of waste sulfuric acid, comprises reactor, circulation pump, vertically or horizontally arranged heat exchangers having inner and outer tubes, mixer for oxidation agent and the acid, and connection pipelines
DE102007059802B3 (en) * 2007-12-11 2008-08-28 Plinke Gmbh Apparatus for recovering pure sulfuric acid by evaporation, includes corrosion- and thermal stress-resistant heat exchanger with silicon-containing cast steel inner tube and steel outer tube

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Legal Events

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