Apparatus and process

C - Chemistry – Metallurgy – 01 – B

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23/111, 23/387

C01B 17/80 (2006.01) B01J 19/00 (2006.01) B01J 19/02 (2006.01) C22C 38/40 (2006.01) F28F 21/08 (2006.01)

Patent

CA 1181569

Abstract Apparatus and process for the manufacture of sulphuric acid by the contact process of the type com- prising at least one gas-concentrated sulphuric acid contacting unit and a sulphuric acid heat exchanger characterised in that the contacting unit and/or heat exchanger is formed of high silicon content austenitic steel. The steel is also of use in sulphuric acid con- centrators. Reduced corrosion rates are provided.

404962

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