초록 ▼

A cost effective and environmentally acceptable method for removal of hydrogen sulfide from sour gas streams associated with source materials such as geothermal and petrochemical energy sources. The method comprises the steps of scrubbing inert, non-combustible components such as carbon dioxide from

A cost effective and environmentally acceptable method for removal of hydrogen sulfide from sour gas streams associated with source materials such as geothermal and petrochemical energy sources. The method comprises the steps of scrubbing inert, non-combustible components such as carbon dioxide from the sour gas, flowing the remaining combustible gas for further processing including compression, cryogenic liquifaction, and expansion to segregate hydrogen sulfide and gaseous components having a similar critical temperature from “clean”combustible gaseous components. The hydrogen sulfide and gaseous components of similar critical temperatures are then disposed of by ignition in a heat exchanger and fluidized bed scrub, converting hydrogen sulfide to sulfur dioxide which is scrubbed from the exhaust before release to the atmosphere. The clean combustible gaseous components are combusted and utilized to drive generators thereby providing a net energy output for the inventive abatement scheme.

대표청구항 ▼

A method for removal of hydrogen sulfide from a sour gas stream containing hydrogen sulfide, combustible and non-combustible gaseous components, the method comprising the steps of: (a) scrubbing a majority of said non-combustible gaseous components from said sour gas stream; (b) compressing the rema

A method for removal of hydrogen sulfide from a sour gas stream containing hydrogen sulfide, combustible and non-combustible gaseous components, the method comprising the steps of: (a) scrubbing a majority of said non-combustible gaseous components from said sour gas stream; (b) compressing the remainder of said stream derived from step (a) to a pressure within a range of from about 230 psia to about 250 psia; (c) effecting a separation by cryogenic liquifaction of hydrogen sulfide and gaseous components of similar critical temperature from said stream derived from step (b) and storing the separated hydrogen sulfide and gaseous components of similar critical temperature in an insulated storage vessel; (d) expanding the unstored remainder of said stream derived from step (c) in an adiabatic manner to substantially recover available work of compression from said stream; (e) combining the expanded stream derived from step (d) with air and effecting combustion thereon in a combustion unit whereby resultant energy is utilized to drive a gas turbine engine; (f) flowing the stored hydrogen sulfide and gaseous components of similar critical temperature derived from step (c) through an expander to substantially recover available work of compression; and (g) combining the expanded hydrogen sulfide and gaseous components of similar critical temperature derived from step (f) with air and effecting combustion thereof in a combustion unit having a fluidized bed scrub, to substantially convert hydrogen sulfide to sulfur dioxide and to scrub said sulfur dioxide from resultant combustion gases.