Process for managing hydrogen sulfide in a refinery
AssigneeUop LLC
InventorsJan De Ren, Haiyan Wang, Joao Jorge Da Silva Ferreira Alves, Ian Clarke, William J. Whyman
Life of this patent
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Abstract
A process and apparatus for managing hydrogen sulfide in a refinery is provided. In the process, a hydrogen sulfide stream from said refinery is fed to a sulfur recovery unit to produce sulfur and a sulfur compound stream or to a thermal oxidizer. The sulfur compound stream and the hydrogen sulfide stream are then thermally oxidized to produce a sulfur oxide stream. The sulfur oxide stream is then reacted with an ammonia stream. In aspect, the product of the reaction can be a fertilizer. The ammonia stream can be obtained from stripping the hydrogen sulfide stream.
Claims25
A process for managing hydrogen sulfide in a refinery comprising:
- thermally oxidizing a first hydrogen sulfide stream from said refinery to produce a sulfur oxide stream;
- reacting said sulfur oxide stream with an ammonia stream;
- feeding a second hydrogen sulfide stream from said refinery to a sulfur recovery unit to produce sulfur and a sulfur compounds stream;
- and
- thermally oxidizing said sulfur compounds stream with said hydrogen sulfide stream.
A process for managing hydrogen sulfide in a refinery comprising:
- stripping hydrogen sulfide from a sour water stream from said refinery to provide a hydrogen sulfide rich stream and a hydrogen sulfide lean stream comprising ammonia;
- feeding said hydrogen sulfide rich stream to a sulfur recovery unit to produce sulfur and a sulfur compounds stream, wherein said hydrogen sulfide rich stream has less than 10 mol % ammonia;
- thermally oxidizing said hydrogen sulfide stream to produce a sulfur oxide stream;
- and
- reacting said sulfur oxide stream with the hydrogen sulfide lean stream to produce a reacted flue gas stream.
A process for producing fertilizer in a refinery comprising:
- feeding a hydrogen sulfide stream from said refinery to a sulfur recovery unit to produce sulfur and a sulfur compounds stream, wherein said hydrogen sulfide stream has less than 10 mol % ammonia;
- thermally oxidizing said sulfur compounds stream comprising carbon sulfides to produce a sulfur oxide stream;
- and
- reacting said sulfur oxide stream with an ammonia stream.
Dependencies are inferred from the claim text.