Increased preheating of sulfur plant gases

Details Increased preheating of sulfur plant gases Increased preheating of sulfur plant gases

1977-04-18

1978-05-09

Peters, G. O.

Chemistry of inorganic compounds

Sulfur or compound thereof

Elemental sulfur

423574R, 23262, C01B 1704

Patent

active

040887448

ABSTRACT:
Claus-type processes used in the past to recover sulfur from low H.sub.2 S acid gas, in the presence of hydrocarbon or other impurities which are harmful to the Claus catalyst, have required the use of straight-through operation with the burning of supplemental fuel gas to maintain the required combustion temperature in the furnace. A method for conserving the amount of additional fuel gas required involving utilization of the excess heat of combustion to preheat the acid gas and oxygen-containing streams to a temperature in excess of 600.degree. F prior to combustion is described. Additional energy savings are achieved by preheating the Claus tail gas effluent prior to incineration.

REFERENCES:
patent: 1893051 (1933-01-01), Dow
patent: 2386202 (1945-10-01), Fernelius et al.
patent: 2403451 (1946-07-01), Nevins et al.
patent: 2685343 (1954-08-01), Permann
patent: 3860679 (1975-01-01), Palm
Lauer; Chemical Engineering Techniques", Reinhold Pub. Corp., N.Y., 1952; pp. 220-222.

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