| 主权项 |
1. A process for producing hydrogen from a gas stream comprising hydrogen sulfide or hydrogen sulfide and carbon dioxide, said process comprising:
a. passing the gas stream to a vertical reactor chamber, wherein the reactor chamber has an outer cylindrical wall defining an interior chamber, said interior chamber including a heating zone, a membrane and a sulfur condenser, said reactor having:
i. an inlet for introducing the gas stream into the interior chamber;ii. the heating zone disposed in the interior chamber and adapted to contact said gas stream, said heating zone comprising a catalyst selected from the group consisting of azurite, malachite, and a metal having 75% nickel and 25% chromium;iii. said membrane consisting of a ceramic membrane disposed in the interior chamber, said ceramic membrane being permeable to hydrogen gas but impermeable to hydrogen sulfide and sulfur vapor, said membrane interior defining a flow passageway in communication with a first outlet;iv. the sulfur condenser being disposed in the interior chamber below the membrane in fluid communication with a second outlet; andv. a gas outlet in communication with the interior chamber; b. reacting the hydrogen sulfide and optionally the hydrogen sulfide and the carbon dioxide in the heating zone at temperature of from about 400° C. to about 700° C. wherein a conversion of hydrogen sulfide is at least about 95% to provide hydrogen gas and sulfur vapor, and optionally water in the interior chamber; c. continuously and immediately removing the hydrogen gas through said membrane to provide hydrogen and withdrawing the hydrogen from the first outlet; d. continuously condensing the sulfur vapor in the condensing zone to provide liquid sulfur withdrawing the liquid sulfur from the second outlet; and e. withdrawing a reactor effluent gas from the interior chamber from the gas outlet, said reactor effluent gas being substantially free of hydrogen sulfide and sulfur. |
