Method of controlling the suction gas pressure of a sulfuric aci

Details Method of controlling the suction gas pressure of a sulfuric aci Method of controlling the suction gas pressure of a sulfuric aci

1979-10-01

1981-08-04

Lewis, Michael L.

Metallurgical apparatus

Process

55106, 55212, 75 6, 75 74, 165 16, 266 78, 266144, 266157, 422111, 422112, 422116, 423187, 423210, 423522, B01D 4900, C01B 1772, C22B 106

Patent

active

042818214

ABSTRACT:
In a system wherein exhaust gases containing SO.sub.2 are fed to a sulfuric acid plant from multiple furnaces, including an intermittently operated furnace (such as a copper or nickel converter furnace), a method of automatically controlling the gas pressure to within a predetermined range at a point just upstream of the exhaust gas pretreating equipment at the inlet of the sulfuric acid plant so as to compensate for the fluctuation in the exhaust gas pressure resulting from start up and stopping of the operation of the intermittently-operated furnace. By this method, the disadvantages caused by large gas fluctuations, i.e., the leakage of SO.sub.2 -containing gas and the suction of excess free air can be prevented.

REFERENCES:
patent: 3063219 (1962-11-01), Copeutt
patent: 3348912 (1967-10-01), Porath et al.
patent: 3443896 (1969-05-01), Furkert et al.
patent: 3841615 (1974-10-01), Delaire
patent: 4088742 (1978-05-01), Homme, Jr.

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