Processes for removing polysulfanes and elemental sulfur from hydrogen sulfide
AssigneeChevron Phillips Chemical Company LP
InventorsDaniel M. Hasenberg, Mitchell D. Refvik, Michael S. Matson, Maruti Bhandarkar, Ronald D. Knudsen
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Abstract
Disclosed are processes for purifying feed streams containing hydrogen sulfide and sulfur-containing impurities by removing sulfur-containing impurities, such as elemental sulfur and polysulfanes, using solid catalytic sorbents. Also disclosed are processes for producing hydrogen sulfide.
Claims19
A process to purify a feed stream comprising sulfur-containing impurities and at least 80 wt. % H2S, the process comprising:
- contacting the feed stream with a solid catalytic sorbent for a time period of at least 100 hours at a temperature in a range from 15° C. to 55° C., a pressure in a range from 34 kPa (5 psia) to 1.3 MPa (200 psia), and a weight hourly space velocity (WHSV) in a range from 0.05 to 2, to remove at least a portion of the sulfur-containing impurities from the feed stream to form a purified H2S stream;
- wherein the solid catalytic sorbent comprises a potassium hydroxide impregnated activated carbon containing from about 7 to about 18 wt. % potassium;
- and
- wherein a minimum of 60 wt. % of the sulfur-containing impurities are removed from the feed stream to form the purified H2S stream.
A process to purify a feed stream comprising sulfur-containing impurities and at least 80 wt. % H2S, the process comprising:
- (i) contacting the feed stream with a drying agent to remove at least a portion of moisture (H2O) from the feed stream to form a moisture reduced feed stream;
- and
- (ii) contacting the moisture reduced feed stream with a solid catalytic sorbent for a time period of at least 100 hours at a temperature in a range from 15° C. to 55° C., a pressure in a range from 34 kPa (5 psia) to 1.3 MPa (200 psia), and a weight hourly space velocity (WHSV) in a range from 0.05 to 2, to remove at least a portion of the sulfur-containing impurities from the moisture reduced feed stream to form a purified H2S stream;
- wherein the solid catalytic sorbent comprises a potassium hydroxide impregnated activated carbon containing from about 7 to about 18 wt. % potassium;
- and
- wherein a minimum of 60 wt. % of the sulfur-containing impurities are removed from the moisture reduced feed stream to form the purified H2S stream.
A hydrogen sulfide production process comprising:
- (a) contacting hydrogen and sulfur under conditions sufficient to produce a feed stream comprising from 10 to 500 ppm by weight of sulfur-containing impurities and at least 90 wt. % H2S;
- (b) contacting the feed stream with a solid catalytic sorbent for a time period of at least 100 hours at a temperature in a range from 15° C. to 55° C., a pressure in a range from 34 kPa (5 psia) to 1.3 MPa (200 psia), and a weight hourly space velocity (WHSV) in a range from 0.05 to 2, to remove at least a portion of the sulfur-containing impurities from the feed stream to form a purified H2S stream;
- wherein the solid catalytic sorbent comprises a potassium hydroxide impregnated activated carbon containing from about 7 to about 18 wt. % potassium;
- and
- wherein a minimum of 60 wt. % of the sulfur-containing impurities are removed from the feed stream to form the purified H2S stream.
A process to purify a feed stream comprising sulfur-containing impurities and at least 80 wt. % H2S, the process comprising:
- contacting the feed stream with a solid catalytic sorbent to remove at least a portion of the sulfur-containing impurities from the feed stream to form a purified H2S stream;
- wherein the solid catalytic sorbent comprises a potassium hydroxide impregnated activated carbon containing from about 7 to about 18 wt. % potassium;
- and
- wherein a minimum of 60 wt. % of the sulfur-containing impurities are removed from the feed stream to form the purified H2S stream.
Dependencies are inferred from the claim text.