Abstract: Intensification techniques are described for enhancing biocatalytic CO2 absorption operations, and may include the use of a rotating packed bed, a rotating disc reactor, a zig-zag reactor or other reactors that utilize process intensification. Carbonic anhydrase can be deployed in the high intensity reactor free in solution, immobilized with respect to particles that flow with the liquid, and/or immobilized to internals, such as packing, that are fixed within the high intensity reactor.

Abstract: There is provided a process and a system for producing CO and H2 (syngas) from a CO2-containing gas. The process includes a step of contacting a CO2-containing gas with an aqueous absorption solution to produce a bicarbonate loaded stream and a CO2-depleted gas, followed by a step of subjecting the bicarbonate loaded stream to an electrochemical conversion to generate a gaseous stream including CO and H2. The system includes an absorption unit wherein the CO2-containing gas is contacted with the absorption solution to produce the bicarbonate loaded stream and the CO2-depleted gas and a conversion unit including an electrolytic cell for electrochemically converting bicarbonate ions in the bicarbonate loaded stream into the gaseous stream including CO and H2 and a bicarbonate depleted stream. In some embodiments, an enzyme such as a carbonic anhydrase can be used to catalyze the conversion of the CO2-containing gas into the bicarbonate loaded stream.

Abstract: Intensification techniques are described for enhancing biocatalytic CO2 absorption operations, and may include the use of a rotating packed bed, a rotating disc reactor, a zig-zag reactor or other reactors that utilize process intensification. Carbonic anhydrase can be deployed in the high intensity reactor free in solution, immobilized with respect to particles that flow with the liquid, and/or immobilized to internals, such as packing, that are fixed within the high intensity reactor.

Abstract: A process for preparing polyolefin in a polymerization loop reactor can include feeding olefin monomer, liquid diluent, polymerization catalyst, optionally hydrogen, and optionally olefin co-monomer into the polymerization loop reactor. The process can include polymerizing the olefin monomer and optionally the olefin co-monomer to produce a polyolefin slurry in the polymerization loop reactor. The polymerization loop reactor can include a plurality of interconnected pipes defining a flow path for the polyolefin slurry. The polymerization loop reactor can include one or more settling legs provided on at least one horizontal part of the interconnected pipes. The circulation velocity of the polyolefin slurry inside at least one horizontal part of the interconnected pipes provided with one or more settling legs can be reduced by at least 20% and at most 60% compared to a circulation velocity inside a remainder of the polymerization loop reactor.

Abstract: A process for preparing polyolefin in a polymerization loop reactor can include feeding olefin monomer, liquid diluent, polymerization catalyst, optionally hydrogen, and optionally olefin co-monomer into the polymerization loop reactor. The process can include polymerizing the olefin monomer and optionally the olefin co-monomer to produce a polyolefin slurry in the polymerization loop reactor. The polymerization loop reactor can include a plurality of interconnected pipes defining a flow path for the polyolefin slurry. The polymerization loop reactor can include one or more settling legs provided on at least one horizontal part of the interconnected pipes. The circulation velocity of the polyolefin slurry inside at least one horizontal part of the interconnected pipes provided with one or more settling legs can be reduced by at least 20% and at most 60% compared to a circulation velocity inside a remainder of the polymerization loop reactor.

Abstract: The invention concerns a semi-continuous method for preparing an emulsion of droplets of a phase A in a phase B, including the following steps: (i) mixing an amount of phase A and an amount of phase B using a multi-shaft mixing system comprising at least one scraping agitator, so as to obtain a dispersion of phase A in phase B with a volume concentration of phase A higher than 74%; (ii) diluting the dispersion obtained in step (i) by adding an additional amount of phase B, and mixing using said multi-shaft mixing system, so as to obtain an emulsion of droplets of a phase A in a phase B.

Abstract: It is an object of the present invention to provide a stirring apparatus which can exhibit excellent stirring characteristics in a wide range of viscous regions and which can reduce the mixing time. A stirring apparatus includes a stirred tank having a bottomed cylinder shape, a rotation shaft concentrically or substantially concentrically disposed inside the stirred tank, and a bottom blade that extends from the rotation shaft so as to extend in a radial direction and a vertical direction, of the stirred tank, and a lower edge of the bottom blade has a shape conforming to a bottom wall surface of the stirred tank. Here, a clearance is formed between the lower edge of the bottom blade and the lower wall surface and the clearance satisfies the following condition: 1% of the inner diameter of the stirred tank<the clearance<4.5% of the inner diameter of the stirred tank.

Abstract: The invention concerns a semi-continuous method for preparing an emulsion of droplets of a phase A in a phase B, including the following steps: (i) mixing an amount of phase A and an amount of phase B using a multishaft mixing system comprising at least one scraping agitator, so as to obtain a dispersion of phase A in phase B with a volume concentration of phase A higher than 74%; (ii) diluting the dispersion obtained in step (i) by adding a supplementary amount of phase B, and mixing using said multishaft mixing system, so as to obtain an emulsion of droplets of a phase A in a phase B.

Abstract: This document relates to a stable emulsion comprising a continuous phase and a dispersed phase comprising droplets. The droplets are at least partially covered with a powder and the powder comprises particles having an average size which is at least 10 times smaller than the average size of the droplets. A process for preparing the emulsion is also presented.