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Mild hydrodesulfurization integrating gas phase catalytic oxidation to produce fuels having an ultra-low level of organosulfur compounds Patents

Language: Английский
Type: Patent request
Number WO 2013116338 A1
Request number: PCT/US2013/023848
Request date: Jan 30, 2013
patent.field.start_date:
Registration date:
patent.field.request_publication_date: Aug 8, 2013
Authors Bourane A. , Koseoglu O.R. , Ismagilov Z.R. , Yashnik S.A. , Kerzhentsev M.A. , Parmon V.N.
Affiliations
1 Boreskov Institute of Catalysis SB RAS
2 Saudi Arabian Oil Company
Abstract: Desulfurization of hydrocarbonfeedsis achieved by first contacting the entire feed with a hydrodesulfurization catalyst in a hydrodesulfurization reaction zone operating under mild conditions to remove the labile organosulfur compounds. A flashing column downstream of the hydrodesulfurization reaction zone fractionates the effluent at a target cut point temperature to obtain two hydrocarbon fuel fractions. A first fraction boiling at or above the target cut point temperature contains the remaining refractory organosulfur compounds. A second fraction boiling below the target cut point temperature is substantially free of organosulfur compounds, since the organosulfur compounds boiling in the range of this fraction were the labile organosulfur compounds which were initially removed by mild hydrodesulfurization. The first fraction is contacted with a gaseous oxidizing agent over an oxidation catalyst having a formula CuxZn1-xA12O4 in a gas phasecatalytic oxidation reaction zone to convert the refractory organosulfur compounds to SOx and low sulfur hydrocarbons. The by-product SOx is subsequently removed, producing a stream containing a reduced level of organosulfur compounds.
English abstract: Desulfurization of hydrocarbonfeedsis achieved by first contacting the entire feed with a hydrodesulfurization catalyst in a hydrodesulfurization reaction zone operating under mild conditions to remove the labile organosulfur compounds. A flashing column downstream of the hydrodesulfurization reaction zone fractionates the effluent at a target cut point temperature to obtain two hydrocarbon fuel fractions. A first fraction boiling at or above the target cut point temperature contains the remaining refractory organosulfur compounds. A second fraction boiling below the target cut point temperature is substantially free of organosulfur compounds, since the organosulfur compounds boiling in the range of this fraction were the labile organosulfur compounds which were initially removed by mild hydrodesulfurization. The first fraction is contacted with a gaseous oxidizing agent over an oxidation catalyst having a formula CuxZn1-xA12O4 in a gas phasecatalytic oxidation reaction zone to convert the refractory organosulfur compounds to SOx and low sulfur hydrocarbons. The by-product SOx is subsequently removed, producing a stream containing a reduced level of organosulfur compounds.
Cite: Bourane A. , Koseoglu O.R. , Ismagilov Z.R. , Yashnik S.A. , Kerzhentsev M.A. , Parmon V.N.
Mild hydrodesulfurization integrating gas phase catalytic oxidation to produce fuels having an ultra-low level of organosulfur compounds
Number: WO2013116338A1, , Request number PCT/US2013/023848 from Jan 30, 2013 РИНЦ ANCAN
Identifiers:
Elibrary: 21973455
Chemical Abstracts: 2013:1225350
Chemical Abstracts (print): 159:335047
Name: Mild hydrodesulfurization integrating gas phase catalytic oxidation to produce fuels having an ultra-low level of organosulfur compounds
English name: Mild hydrodesulfurization integrating gas phase catalytic oxidation to produce fuels having an ultra-low level of organosulfur compounds