Abstract: The invention relates to a process for preparing a polymer polyol, comprising mixing in a reactor vessel, a base polyol, one or more ethylenically unsaturated monomers, a polymerization initiator, optionally a macromer, and optionally a chain transfer agent, and polymerizing the mixture thus obtained at a temperature of 50 to 200° C., wherein after discharging the reactor vessel content, the interior surface of the reactor vessel walls and/or any internals present in the reactor vessel are blasted with round media.

Abstract: The invention relates to a process for preparing a polymer polyol, comprising mixing in a reactor vessel, a base polyol, one or more ethylenically unsaturated monomers, a polymerization initiator, optionally a macromer, and optionally a chain transfer agent, and polymerizing the mixture thus obtained at a temperature of 50 to 200° C., wherein after discharging the reactor vessel content, the interior surface of the reactor vessel walls and/or any internals present in the reactor vessel are blasted with round media.

Abstract: The invention provides a process for the preparation of hydrocarbons comprising the steps of: (a) contacting a mixture of carbon monoxide and hydrogen at an elevated temperature and pressure with a mixture of a methanol synthesis catalyst and a methanol conversion catalyst thereby forming C5+ hydrocarbons; (b) separating at least part of the C5+ hydrocarbons as obtained in step (a) into a light stream and a heavy durene-rich stream; (c) subjecting at least part of the heavy durene-rich stream to a hydrodealkylation treatment in the presence of hydrogen to obtain a stream of hydrocarbons having a reduced durene content; and (d) mixing at least part of the light stream as obtained in step (b) with at least part of the stream of hydrocarbons having a reduced durene content as obtained in step (c).

Abstract: A gas separation apparatus comprising: a first chamber; a second chamber, separated from the first chamber by a porous partition; a first inlet for conveying a mixture of components to the first chamber; a first outlet for discharging the remainder of the mixture of components after at least part of the first component has been removed from the first chamber; a second inlet for conveying a sweeping component into the second chamber; a second outlet for discharging a mixture of sweeping component and diffused first component from the second chamber, and a pressure equilibrating device connecting and mediating between the first and the second chamber; and a separation process using the separation apparatus.

Abstract: Integrated preparation and separation process comprising a preparation process wherein a byproduct is produced; and a gas separation process wherein a first component is separated from a mixture of components by diffusion of the first component through a porous partition into a stream of sweeping component; wherein the byproduct produced in the preparation process is subsequently used as the sweeping component in the separation process, and an industrial set-up for use in such a process.

Abstract: Integrated separation and preparation process comprising a gas separation process wherein a first component is separated from a mixture of components by diffusion of the first component through a porous partition into a stream of sweeping component; and a preparation process wherein the sweeping component is used as feed. Separation unit and device for use in such a process and industrial set-up for use in such a process.