Method for removing sulfur compounds from hydrocarbon streams

Patent metadata

Field	Value
Publication number	US-2016333277-A1
Application number	US-201515110128-A
Country	US
Kind code	A1
Filing date	Jan 8, 2015
Priority date	Jan 10, 2014
Publication date	Nov 17, 2016
Grant date	—

Abstract

A process for removing sulfur compounds selected from mercaptans (R—SH), organic sulfides (R—S—R′), organic disulfides (R—S—S—R′) and carbonyl sulfide (COS) from a hydrocarbonaceous stream comprises an absorption step of contacting the hydrocarbonaceous stream comprising one or more sulfur compounds with an absorbent comprising a first transition metal sulfide to bind at least some of the sulfur present in the sulfur compound or compounds in the transition metal sulfide as additional sulfur to form a second transition metal sulfide.

First claim

1 .- 11 . (canceled)

12 . A process for removing sulfur compounds selected from the group consisting of mercaptans, organic sulfides, organic disulfides and carbonyl sulfide, from a hydrocarbonaceous stream, the process comprising:
an absorption step comprising contacting the hydrocarbonaceous stream comprising one or more sulfur compounds with an absorbent comprising a first transition metal sulfide comprising iron (II) sulfide having the stoichiometric formula FeS 0.5-1.6 to bind at least some of the sulfur present in the sulfur compound or compounds in the transition metal sulfide as additional sulfur to form a second transition metal sulfide, and wherein the second transition metal is regenerated by heating in a regeneration step, wherein the first transition metal sulfide and elemental sulfur are formed.

13 . The process according to claim 12 , wherein the first and the second transition metal sulfide are present in a fixed bed.

14 . The process according to claim 12 , wherein the first and the second transition metal sulfide are present in a fluidized bed.

15 . The process according to claim 12 , wherein the hydrocarbonaceous stream is contacted with the first transition metal sulfide at a temperature of from 200 to 400° C.

16 . The process according to claim 15 , wherein the second transition metal sulfide is regenerated by heating to a temperature of from 500 to 1000° C.

17 . The process according to claim 16 , wherein the second transition metal sulfide is regenerated in a hot inert gas stream.

18 . The process according to claim 14 , wherein the process is carried out in at least two fixed-bed reactors, wherein the absorption step is carried out in one fixed-bed reactor and the regeneration step is carried out in a further fixed-bed reactor, on an alternating basis.

19 . The process according to claim 12 , wherein the process is carried out in at least two fluidized-bed reactors, wherein the absorption step is carried out in a first fluidized-bed reactor and the regeneration step is carried out in a second fluidized-bed reactor, on a continuous basis.

20 . The process according to claim 12 , wherein the hydrocarbonaceous stream comprises C 1 -C 6 mercaptans.

21 . The process according to claim 12 , wherein the content of mercaptans in the hydrocarbonaceous stream prior to carrying out the absorption step is 0.001 to 5 vol %.

22 . The process according to claim 12 , wherein the hydrocarbonaceous stream comprises at least 80 vol % of C 1 -C 6 alkanes.

Assignees

• Basf Se

Inventors

• Waglöhner Steffen
• Bender Michael
• Kuschel Andreas
• Rüttinger Wolfgang
• Brüggemann Philipp

Classifications

• C10G21/08 Primary

  Inorganic compounds only · CPC title

• C10G25/09

  according to the "fluidised bed" technique · CPC title

• B01D2253/1128

  Metal sulfides · CPC title

• B01D2257/304

  Hydrogen sulfide · CPC title

• C10L3/12

  Liquefied petroleum gas {(liquefying by pressure and cold treatment F25J)} · CPC title