Shell Oil Comapny

Shell Usa, Inc.

Johannes Leendert Willem Cornelis Den Boestert

Arian Nijmeijer

Jeroen Van Westrenen

Cornelis Jacobus Smit

Nicholas James Rounthwaite

Hubert Willem Schenck

Nigel Wagstaff

Johannes P Haan

Johannes Gerhardus Joseph Beckers

Wim M Bond

Robert Wilfred Matthews Wardle

Huw Jones

Adrianus Robert Storm

The invention relates to a process for removing 5poly(propylene oxide) from propylene oxide, comprising: a) sending a stream comprising propylene oxide and poly(propylene oxide) to a filtration screen having openings with an average diameter of at most 50 μm; and b) sending the filtrate stream resulting from step a) to a membranehaving an average pore size of from 0 to 30 nm and recovering a permeate stream from the membrane as a purified propylene oxide stream.

Process for removing poly(propylene oxide) from propylene oxide by membrane separation

A process for reducing injector deposits in an internal combustion engine fuelled with a fuel composition, the process comprising contacting a fuel composition with a metal-selective membrane situated in the fuel delivery system. The reduction of such deposits provides an increase in fuel efficiency, fuel thermal stability, boost in engine cleanliness, improves fuel economy and enables the possibility of using a reduced amount of expensive detergent in the fuel composition.

Process for reducing injector deposits

A method for reducing the mercury content of natural gas condensate, comprising the steps of providing a nanofiltration membrane having a feed side and a permeate side; contacting the natural gas condensate with the feed side of the membrane; and obtaining a mercury-depleted natural gas condensate at the permeate side of the membrane; and a natural gas processing plant comprising a condensate workup section including a nanofiltration membrane separation unit for reducing the mercury content of natural gas condensate.

Method for reducing the mercury content of natural gas condensate and natural gas processing plant

The invention relates to a process for removing poly(propylene oxide) from propylene oxide by membrane separation, wherein a membrane having an average pore size of from 0 to 5 nm is used. In said process, a liquid feed comprising propylene oxide and poly(propylene oxide) may be separated by the membrane into a permeate comprising propylene oxide and either no poly(propylene oxide) or poly(propylene oxide) at a concentration which is lower than the poly(propylene oxide) concentration in the feed, and a retentate comprising propylene oxide and poly(propylene oxide) at a concentration which is higher than the poly(propylene oxide) concentration in the feed.

Process for the removing poly(propylene oxide) from propylene oxide by membrane separation

The invention provides a method for removal of metal sulphide particles from a liquid stream comprising a solvent and metal sulphide particles, using a filter system comprising at least one membrane, the method comprising contacting the liquid stream with the membrane, thereby transferring metal sulphide particles from the liquid stream onto the membrane surface to obtain a liquid stream depleted of metal sulphide particles and a filter system comprising a membrane enriched in metal sulphide particles. The invention further provides an apparatus for removal of metal sulphide particles from a liquid stream comprising a solvent and metal sulphide particles, wherein the apparatus comprises a solvent regenerator column () comprising at least one inlet and two outlets, which solvent regenerator column is connected to filter system () comprising at least one membrane and comprising at least one inlet and one outlet, which the filter system is connected to a separation column () comprising at least one inlet and two outlets.

Method and apparatus for removing metal sulphide particles from a liquid stream

Process for separating colour bodies and/or asphalthenic contaminants from a hydrocarbon mixture using a membrane having a feed side and a permeate side, by contacting the hydrocarbon mixture with the feed side of the membrane, and by removing at the permeate side a hydrocarbon permeate having a reduced content of colour bodies and/or asphalthenic contaminants, wherein the membrane is arranged in a spirally wound membrane module.

Process for separating colour bodies and/or asphalthenic contaminants from a hydrocarbon mixture

Process for separating colour bodies and/or asphalthenic contaminants from a hydrocarbon mixture using a membrane having a feed side and a permeate side, by contacting the hydrocarbon mixture with the feed side of the membrane, wherein between the feed and permeate sides of the membrane a pressure difference is applied, thereby passing part of the hydrocarbon mixture from the feed side to the permeate side and obtaining at the permeate side of the membrane a hydrocarbon permeate having a reduced content of colour bodies and/or asphalthenic contaminants, and by removing the hydrocarbon permeate from the permeate side of the membrane, wherein during selected time intervals the removal of hydrocarbon permeate from the permeate side of the membrane is stopped so that the pressure difference over the membrane is temporarily substantially lowered.

Process to separate colour bodies and/or asphalthenic contaminants from a hydrocarbon mixture

A process for permeation enhanced reactive extraction of levulinic acid from a liquid aqueous phase comprising levulinic acid, wherein the levulinic acid from the aqueous phase is brought into contact with a liquid alcohol phase at esterification conditions in the presence of a catalyst at a temperature in the range of from 50 to 250&#xb0; C., the aqueous phase and the alcohol phase being separated from each other by a membrane, and an aqueous stream depleted in levulinic acid and an alcohol stream comprising ester of levulinic acid are formed.

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Amsterdam, Netherlands

Johannes Leendert Willem Cornelis Den Boestert