Recovery and regeneration of sulfuric acid

Details Recovery and regeneration of sulfuric acid Recovery and regeneration of sulfuric acid

1994-11-28

1996-08-20

Straub, Gary P.

Chemistry of inorganic compounds

Sulfur or compound thereof

Oxygen containing

423525, 423526, 423527, 423DIG2, 20415715, 2041574, 2041582, 208 13, C01B 1790

Patent

active

055476554

ABSTRACT:
Using generated active intermediates or species simultaneously to remove water and organic compounds from the spent sulfuric acid catalyst of the alkylation of olefins and alkanes is disclosed in this invention. Over 90% water and 95% organic compounds of the spent catalyst can be removed by this invention under mild operating conditions, less than 20 atms and in the temperature range from -50.degree. to 250.degree. C. This invention provides a novel process instead of the traditional or commercial process by combustion and treatment of the spent catalyst at high temperature. It is significant to simplify comparing with the traditional process, and is a safe, simple, clean or pollutionless, and cheap one-stage process.

REFERENCES:
patent: 1842884 (1932-01-01), Taylor
patent: 3888750 (1975-06-01), Brecher et al.
patent: 4085016 (1978-04-01), Janjua et al.
patent: 5308458 (1994-05-01), Urwin et al.
"Physical Chemistry" by Atkins, 1978 printed in Great Britain by Oxford University Press, pp. 354-356 (no month).

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