Combined process for upgrading spent alkylation acid and reducin

Details Combined process for upgrading spent alkylation acid and reducin Combined process for upgrading spent alkylation acid and reducin

1975-06-30

1977-03-29

Vertiz, Oscar R.

Chemistry of inorganic compounds

Sulfur or compound thereof

Oxygen containing

423235, 423242, 423523, 423540, 423570, C01B 1772

Patent

active

040149820

ABSTRACT:
The effluent streams from utility stack gases containing nitric oxides and sulfur dioxide are sequentially oxidized, absorbed with effluent spent alkylation acid, the unabsorbed remaining gases contacted with carbon monoxide from alkylation units in refinery cracking and other industrial plants to form sulfur, carbon dioxide and nitrogen, the carbon dioxide and nitrogen being vented, the sulfur oxidized to sulfur trioxide and contacting aqueous sulfuric acid therewith to effect concentration of said acid and suitability for recycle to an alkylation unit; the absorbate containing spent alkylation acid sequentially treated with a burning, oxidation, aqueous dilution and carbon monoxide treatment steps to form sulfuric acid for recycle to an alkylation unit and venting formed carbon dioxide and nitrogen.

REFERENCES:
patent: 1420477 (1922-06-01), Fairlie
patent: 2080360 (1937-05-01), Lepsoe
patent: 2090828 (1937-08-01), Beckman
patent: 2325066 (1943-01-01), Marcotte
patent: 2390316 (1945-12-01), Mottern
patent: 2789035 (1957-04-01), Hurlburt
patent: 2955920 (1960-10-01), Belchetz
patent: 3682593 (1972-08-01), Browder
patent: 3888970 (1975-06-01), Haas et al.

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