Control system for a sulfur process

Details Control system for a sulfur process Control system for a sulfur process

1977-09-29

1978-07-11

Peters, G. O.

Chemistry of inorganic compounds

Sulfur or compound thereof

Elemental sulfur

423DIG5, 23253A, 23255R, C01B 1704, G01N 700

Patent

active

041002660

ABSTRACT:
Control of a process for producing free sulfur from hydrogen sulfide is accomplished by manipulating the flow rate of a feed stream containing oxygen to a furnace in such a manner that a desired proportion of the hydrogen sulfide fed to the furnace is converted to sulfur dioxide. The flow rate of a feed stream containing hydrogen sulfide to a tail gas cleanup process is also manipulated utilizing feedforward and feedback control to maintain the hydrogen sulfide and sulfur dioxide concentrations in the gas stream from the tail gas cleanup process at acceptable levels to avoid environmental polution.

REFERENCES:
patent: 3026184 (1962-03-01), Karaser
patent: 3312529 (1967-04-01), Evano
patent: 3871831 (1975-03-01), Andral et al.
patent: 4021201 (1977-05-01), Vautrain et al.

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