US2019367819A1PendingUtilityA1

Methods for reducing hydrogen sulfide in crude oil

46
Assignee: INNOSPEC LTDPriority: Jun 5, 2018Filed: Jun 5, 2019Published: Dec 5, 2019
Est. expiryJun 5, 2038(~11.8 yrs left)· nominal 20-yr term from priority
Inventors:Cenk R. BurgazliPhilip James Maltas
C10L 2290/543C10G 29/20C10G 2300/207C10G 2400/08C10G 2300/1055C10G 2300/104C10L 2200/043C10L 10/00C10G 2300/1051C10L 1/2283C10L 2270/04C10G 2300/202C10L 1/228
46
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Claims

Abstract

The invention provides a method of removing or lowering amounts of hydrogen sulfide in a crude oil, the method comprising adding to the crude oil an imine compound represented by the formula R1—C(CH3)2—N═CH2, wherein R1 represents a (1-5C)alkyl group.

Claims

exact text as granted — not AI-modified
1 . A method of removing or lowering amounts of hydrogen sulfide in a crude oil, the method comprising adding to the crude oil an imine compound represented by the formula R 1 —C(CH 3 ) 2 —N═CH 2 , wherein R 1  represents a (1-5C)alkyl group. 
     
     
         2 . A method of producing a distillate fuel component boiling in the kerosene range from a crude oil, wherein the crude oil contains an imine compound represented by the formula R 1 —C(CH 3 ) 2 —N═CH 2 , wherein R 1  represents a (1-5C)alkyl group, and/or an amine residue thereof, the method comprising distilling the crude oil to form the distillate fuel component. 
     
     
         3 . The method according to  claim 1 , wherein R 1  represents a methyl group or a 5C alkyl group. 
     
     
         4 . The method according to  claim 2 , wherein R 1  represents a methyl group or a 5C alkyl group. 
     
     
         5 . The method according to  claim 3 , wherein R 1  represents a 5C alkyl group. 
     
     
         6 . The method according to  claim 4 , wherein R 1  represents a 5C alkyl group. 
     
     
         7 . The method according to  claim 1 , wherein the imine compound is tert-butylimine or tert-octylimine. 
     
     
         8 . The method according to  claim 2 , wherein the imine compound is tert-butylimine or tert-octylimine. 
     
     
         9 . The method according to  claim 3 , wherein the imine compound is tert-butylimine or tert-octylimine. 
     
     
         10 . The method according to  claim 4 , wherein the imine compound is tert-butylimine or tert-octylimine. 
     
     
         11 . The method according to  claim 7 , wherein the imine compound is tert-octylimine. 
     
     
         12 . The method according to  claim 8 , wherein the imine compound is tert-octylimine. 
     
     
         13 . The method according to  claim 9 , wherein the imine compound is tert-octylimine. 
     
     
         14 . The method according to  claim 10 , wherein the imine compound is tert-octylimine. 
     
     
         15 . The method according to  claim 1 , wherein the imine compound is prepared from tert-octyl amine and formaldehyde or paraformaldehyde. 
     
     
         16 . The method according to  claim 2 , wherein the imine compound is prepared from tert-octyl amine and formaldehyde or paraformaldehyde. 
     
     
         17 . The method according to  claim 3 , wherein the imine compound is prepared from tert-octyl amine and formaldehyde or paraformaldehyde. 
     
     
         18 . The method according to  claim 4 , wherein the imine compound is prepared from tert-octyl amine and formaldehyde or paraformaldehyde. 
     
     
         19 . A composition comprising a crude oil and an imine compound represented by the formula R 1 —C(CH 3 ) 2 —N═CH 2 , wherein R 1  represents a (1-5C)alkyl group. 
     
     
         20 . The composition according to  claim 19 , wherein R 1  represents a methyl group or a 5C alkyl group. 
     
     
         21 . The composition according to  claim 20 , wherein R 1  represents a 5C alkyl group. 
     
     
         22 . The composition according to  claim 19 , wherein the imine compound is tert-butylimine or tert-octylimine. 
     
     
         23 . The composition according to  claim 22 , wherein the imine compound is tert-octylimine. 
     
     
         24 . The composition according to  claim 19 , wherein the imine compound is prepared from tert-octyl amine and formaldehyde or paraformaldehyde. 
     
     
         25 . A distillate fuel component boiling in the kerosene range obtainable by a method of producing a distillate fuel component boiling in the kerosene range from a crude oil, wherein the crude oil contains an imine compound represented by the formula R 1 —C(CH 3 ) 2 —N═CH 2 , wherein R 1  represents a (1-5C)alkyl group, and/or an amine residue thereof, the method comprising distilling the crude oil to form the distillate fuel component. 
     
     
         26 . The method of producing a distillate fuel component boiling in the kerosene range according to  claim 2 , wherein the distillate fuel component has improved thermal stability when compared to a distillate fuel component produced in the same way but from a crude oil containing an imine compound represented by the formula R 2 —N═CH 2 , wherein R 2  represents an alkyl group having 10 or more carbon atoms, and/or an amine residue thereof. 
     
     
         27 . The distillate fuel component boiling in the kerosene range according to  claim 25 , wherein the distillate fuel component has improved thermal stability when compared to a distillate fuel component produced in the same way but from a crude oil containing an imine compound represented by the formula R 2 —N═CH 2 , wherein R 2  represents an alkyl group having 10 or more carbon atoms, and/or an amine residue thereof. 
     
     
         28 . An aviation turbine fuel composition comprising a distillate fuel component boiling in the kerosene range obtainable by a method of producing a distillate fuel component boiling in the kerosene range from a crude oil, wherein the crude oil contains an imine compound represented by the formula R 1 —C(CH 3 ) 2 —N═CH 2 , wherein R 1  represents a (1-5C)alkyl group, and/or an amine residue thereof, the method comprising distilling the crude oil to form the distillate fuel component. 
     
     
         29 . The aviation turbine fuel composition according to  claim 28 , wherein the aviation turbine fuel has improved thermal stability as measured by ASTM D3241 when compared to an aviation turbine fuel produced in the same way but from a crude oil containing an imine compound represented by the formula R 2 —N═CH 2 , wherein R 2  represents an alkyl group having 10 or more carbon atoms, and/or an amine residue thereof.

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