Shell Oil Comapny

Shell Oil Cpmpany

Sipke Hidde Wadman

Jean Paul Andre Marie Joseph Ghislain Lange

Jozef Jacobus Titus Smits

Jean Paul Andre Marie Joseph Gishlain Lange

Ronald Jan Schoonebeek

Kai Jürgen Fischer

Wouter Koot

Jean Paul Andre Marie Joseph Ghislan Lange

Jean-Paul Andre Marie Joseph Gishlain Lange

The present invention provides a process for the production of 1,4-BDO and THF from furan, said process comprising: (i) contacting furan with hydrogen and water in a reactor in the presence of a catalytic composition, wherein the furan and water are contacted in the presence of a solvent, said solvent being selected from one or more of THF, 1,4-BDO and NBA, and converting at least a portion of said furan to 1,4-BDO and THF; (ii) producing a reactor product stream comprising gases, water, THF, 1,4-BDO and furan; (iii) separating gases from the reactor product stream; (iv) then separating at least a portion of each of the THF and 1,4-BDO from said reactor product stream; and (v) recycling the remainder of the reactor product stream, comprising water, optionally furan, and at least one of THF, 1,4-BDO and NBA, to the reactor.

Process for the production of 1,4-butanediol and tetrahydrofuran from furan

The present invention provides a process for the preparation of 1,4-butanediol and tetrahydrofuran said process comprising contacting furan with hydrogen and water in the presence of a supported catalytic composition comprising at least one first metal selected from those in groups 8 to 10 of the periodic table and a further metal selected from manganese, molybdenum, niobium and tungsten.

The present invention provides a process for the preparation of 1,4-butanediol and tetrahydrofuran said process comprising contacting furan with hydrogen and water in the presence of a supported catalytic composition comprising rhenium and palladium in a weight ratio of at least 1:1 and a total combined weight rhenium and palladium in the catalyst composition in the range of from 0.01 to 20 wt %.

The present invention provides a process for the treatment of a liquid first furan stream comprising furan and carbon monoxide, said process comprising the steps of: i) contacting said first furan stream with a CO-lean first gaseous stream; and ii) stripping at least a portion of the carbon monoxide in the first furan stream into the first gaseous stream to produce a second furan stream comprising less carbon monoxide than the first furan stream and a CO-enriched second gaseous stream.

Process for the production of furan and its derivatives

The present invention provides a process for the recovery of 1,4-butanediol and at least one co-product selected from &#x3b3;-butyrolactone, n-butanol and tetrahydrofuran from an aqueous stream, said process comprising the steps of providing the aqueous stream, providing a first solvent stream, combining said aqueous stream with said first solvent stream and recovering at least a portion of the 1,4-butanediol and at least a portion of at least one of the co-products by liquid-liquid extraction.

Process for the separation of 1,4-butanediol and co-products

The present invention provides a process for the production of furan, said process comprising the steps of: i) contacting furfural with a decarbonylation catalyst in a decarbonylation reactor to produce a gaseous decarbonylation reaction product stream comprising furan and carbon monoxide; ii) contacting said gaseous decarbonylation reaction product stream with a solvent stream comprising furfural; iii) absorbing at least a portion of the furan present in the gaseous decarbonylation reaction product stream into the solvent stream to provide a furan-containing solvent stream and a gaseous stream comprising carbon monoxide; iv) separating the furan from the furan containing solvent stream by distillation to provide a first furan stream; and v) using at least a portion of the remaining solvent stream comprising furfural as at least a portion of the furfural provided to the decarbonylation reactor.

The invention relates to a process for regenerating a catalyst used in the decarbonylation of an aldehyde, wherein the catalyst is a heterogeneous, supported catalyst containing a metal selected from the group consisting of Fe, Ru, Os, Co, Rh, Ir, Ni, Pd, Pt and mixtures thereof, and wherein the catalyst is subjected to a gas stream comprising hydrogen at a temperature of from 200 to 600&#xb0; C., wherein substantially no oxygen is used in the regeneration process.

Regeneration of aldehyde decarbonylation catalysts

The present invention provides a process for removing mercaptans from a gas stream gas stream, comprising the steps: a) providing a first mercaptan-comprising gas stream comprising at least a mercaptan of the general formula: R&#x2014;SH, wherein Ris an alkyl group comprising 1 to 4 carbon atoms; and b) contacting the mercaptan-comprising gas stream with an absorption medium comprising a substituted disulphide and a nitrogen-containing base to obtain a second mercaptan-depleted gas stream, wherein: the substituted disulphide is of the general formula R&#x2014;SS&#x2014;Rwherein: Rand Rare carbon comprising substituents of which the corresponding R&#x2014;SH and R&#x2014;SH thiols have a vapor pressure below the vapor pressure of any R&#x2014;SH thiol.

Process for removing mercaptans from a gas stream

The present invention provides a process for removing mercaptans from a gas stream. In the process, a first mercaptan-comprising gas stream comprising at least a mercaptan of the general formula: R&#x2014;SH, wherein Ris an alkyl group comprising 1 to 4 carbon atoms, and an acid component is contacted with an absorption medium to obtain a mercaptan-depleted gas stream. The absorption medium includes a substituted disulphide and a base. The substituted disulphide is of the general formula R&#x2014;SS&#x2014;R, wherein Rand Rare carbon comprising substituents of which the corresponding R&#x2014;SH and R&#x2014;SH thiols have a vapor pressure below the vapor pressure of any R&#x2014;SH thiol, and at least one of Rand Ris an electron withdrawing group.

The present invention provides a process for the selective oxidation of hydrogen sulphide in a hydrogen sulphide-containing hydrocarbon and/or hydrogen feed gas to elemental sulphur in a reaction zone containing a Claus catalyst, comprising the steps of: i) reacting in the reaction zone the hydrogen sulphide in the hydrogen sulphide-containing hydrocarbon and/or hydrogen feed gas with sulphur dioxide at a pressure in the range of from 4 to 200 bar (absolute) and a temperature in the range of from 120 and 160&#xb0; C., such that the elemental sulphur formed is essentially in liquid form; ii) contacting the catalyst with a reducing atmosphere at elevated temperatures.

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Amsterdam, Netherlands

Sipke Hidde Wadman