초록

The ammonia may be partially oxidized by the use of substoichiometric amounts of oxygen or thermally dissociated.

대표청구항 ▼

[ Having thus described the invention, we claim:] [1.] A method for producing hydrogen and sulfur from a first gaseous mixture containing hydrogen sulfide and ammonia, the method consisting essentially of:a) separating at least a major portion of the ammonia from the first gaseous mixture to produce

[ Having thus described the invention, we claim:] [1.] A method for producing hydrogen and sulfur from a first gaseous mixture containing hydrogen sulfide and ammonia, the method consisting essentially of:a) separating at least a major portion of the ammonia from the first gaseous mixture to produce a second gaseous mixture containing at least a major portion of the hydrogen sulfide;b) combusting a portion of the hydrogen sulfide in the second gaseous mixture to produce a third gaseous mixture containing hydrogen sulfide and sulfur dioxide;c) heating the ammonia to a temperature sufficient to dissociate at least a major portion of the ammonia to produce a fourth gaseous mixture containing nitrogen and hydrogen; andd) combining the third gaseous mixture and the fourth gaseous mixture and passing the combined gaseous mixture to a sulfur recovery process wherein at least a major portion of the hydrogen sulfide and sulfur dioxide is recovered from the combined gaseous mixture as sulfur and wherein at least a portion of the hydrogen is recovered in the discharge gaseous stream from the sulfur recovery process.