Shell Oil Comapny

Shell Internationale Research Maatschappij, B.v.

Pq Corporation

Wiebe Sjoerd Kijlstra

Bart Pelgrim

Arend Hoek

Hong-Xin Li

László Domokos

Marcello Stefano Rigutto

Hermanus Jongkind

Cornelis Jacobus Smit

William Edward Cormier

Bjorn Moden

Johannes Anthonius Robert Van Veen

David Allen Cooper

Ferry Winter

Edward Julius Creyghton

Antonius Adrianus Maria Roovers

Lay Hwa Ong

Johannes Petrus De Jonge

Jolinde Machteld Van De Graaf

Inge Roos

Sjoerd Alkema

Jelle Rudolf Anne Sietsma

Petrus Franciscus Antonius Van Grinsven

Monique Van Der Zon

Josephus Norbertus Johannes Jacobus Lammers

Vincent Rogers

Clas Ingemar Wernersson

This invention relates to a process for the preparation of a hydrocracking catalyst and its use. A zeolite Y having specifically defined properties is mixed with an alumina binder component and a first metals-containing solution that is extruded to form an extruded mixture. The extruded mixture is dried and calcined. The dried and calcined mixture is then impregnated with a second metals-containing solution.

Process for the preparation of a hydrocracking catalyst

Paraffin isomerization catalyst comprising of from 0.01 to 5 wt. % of a Group VIII noble metal on a carrier containing alumina and zeolite beta having a silica to alumina molar ratio (SAR) of from 5 to 15 and process employing such catalyst for isomerization of a hydrocarbon feed containing paraffins having of from 4 to 8 carbon atoms.

Isomerization catalyst

A process for the preparation of a naphtha-selective hydrocracking catalyst comprising of from 3 to 4.8% wt of molybdenum, calculated as metal, and of from 1.5 to 3% wt of nickel, calculated as metal, which comprises loading a refractory oxide support comprising an alumina binder component and a zeolite Y component in a content of from 65 to 75 wt % based on the total weight of the catalyst, with nickel and molybdenum in the presence of citric acid, wherein the zeolite Y component has a unit cell size in the range of from 24.42 to 24.52 &#x212b;, a SAR in the range of from 8 to 15, and a surface area of from 850 to 1020 m/g.

Process for preparing hydrocracking catalyst compositions

Disclosed is a process for the preparation of a faujasite zeolite. A starting zeolite of the faujasite structure having a silica to alumina ratio of from 4.5 to 6.5 and an alkali level of less than 1.5% wt is steam calcined to produce an intermediate zeolite. The intermediate zeolite is treated with an acidified solution having specificately defined characteristics.

Faujasite zeolite preparation process

The invention provides a process for converting a paraffinic feedstock comprising at least 50 wt % of compounds boiling above 370&#xb0; C., a paraffin content of at least 60 wt %, an aromatics content below 1 wt %, a naphthenic content below 2 wt %, a nitrogen content below 0.1 wt %, and a sulphur content below 0.1 wt %, comprising: (a) reacting the feedstock with hydrogen at a temperature between 175 and 400&#xb0; C. and a pressure between 20 and 100 bar using a catalyst comprising 0.005 to 5.0 wt % of a Group VIII noble metal on a carrier comprising 0.1-15 wt % zeolite beta and at least 40 wt % amorphous silica-alumina (b) withdrawing the effluent (c) subjecting the effluent to a fractionation step to form a heavy fraction, an intermediate fraction, and a light fraction; and (d) providing at least part of the heavy fraction to the reaction zone.

Process for conversion of paraffinic feedstock

Disclosed is a process for the removal of sulfur from a gas stream containing sulfur dioxide, hydrogen cyanide and hydrogen sulfide. The process includes a hydrogenation step, a hydrolysis step, an ammonia removal step and a hydrogen sulfide removal step. An aqueous alkaline washing liquid is used in the hydrogen sulfide removal step and with the spent sulfide containing washing liquid being regenerated using an oxidation bioreactor that utilizes sulfide oxidizing bacteria such as autotropic aerobic cultures ofand

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The invention relates to a process for the removal of, HS and mercaptans from a gas stream comprising these compounds, which process comprises the steps of: (a) removing HS from the gas stream by contacting the gas stream in a H2S-removal zone with a first aqueous alkaline washing liquid to obtain a HS-depleted gas stream and a sulphide-comprising aqueous stream; (b) removing mercaptans from the HS-depleted gas stream obtained in step (a) by contacting the HS-depleted gas stream in a mercaptan-removal zone with a second aqueous alkaline washing liquid to obtain a mercaptan-depleted gas stream and an thiolate&#x2014;comprising aqueous stream; (c) contacting the combined aqueous streams comprising sulphide and thiolates obtained in step (a) and step (b) with sulphide-oxidizing bacteria in the presence of oxygen in an oxidation reactor to obtain a sulphur slurry and a regenerated aqueous alkaline washing liquid; (d) separating at least part of the sulphur slurry obtained in step (c) from the regenerated aqueous alkaline washing liquid; and (e) recycling the regenerated aqueous alkaline washing liquid to the HS-removal zone in step (a) and to the mercaptan-removal zone in step (b). The invention further relates to a gas-treating unit for the removal of HS and mercaptans and from a gas stream comprising these compounds in a process according to the invention.

Growing community of inventors

Amsterdam, Netherlands

Wiebe Sjoerd Kijlstra