Process and apparatus for reclaiming sulfur-containing waste mat

Details Process and apparatus for reclaiming sulfur-containing waste mat Process and apparatus for reclaiming sulfur-containing waste mat

1980-11-20

1983-03-08

Straub, Gary P.

Chemistry of inorganic compounds

Sulfur or compound thereof

Oxygen containing

423525, 423531, 208 13, C01B 1750, C01G 1700

Patent

active

043761089

ABSTRACT:
Disclosed are a process and apparatus useful for reclaiming sulfur-containing waste materials such as waste or spent sulfuric acid and acid tars.
The sulfur-containing waste material is burned in a multi-stage combustion furnace having, in sequence, a rotary furnace containing heated coke, an intermediate combustion chamber and a secondary combustion chamber. The temperatures, gas flow rates and amount of added air are carefully controlled.
A separation gas is produced having a high sulfur dioxide content which can be used in the sulfuric acid contact process. The separation gas is free of nitrous oxides, hydrocarbons and sulfur trioxide.

REFERENCES:
patent: 2019893 (1935-11-01), Clark
patent: 2049243 (1936-07-01), Bartholomew
patent: 2091943 (1937-08-01), Gilchrist et al.
patent: 2263766 (1941-11-01), Fentress et al.
patent: 2812291 (1957-11-01), Hughes
patent: 3873671 (1975-03-01), Reed et al.
patent: 4125593 (1978-11-01), Scheifley et al.
patent: 4198384 (1980-04-01), Robinson

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