A carbon black reactor has a cooling function that does not change the diameter of the combustion port by continuously cooling the combustion port of the reactor. The carbon black reactor includes a body made of a metallic material which has a pair of flanges spaced apart from each other, and a combustion port with a central portion penetrated which combustion gas and feedstock oil are reacted while connecting the spaced flanges. A plurality of injection nozzles are configured to inject a feedstock oil into the combustion port, and a pair of cooling rooms are respectively provided on an inner plate surface of the flange facing each other A distribution cooling pipe surrounds an outer circumferential surface of the combustion port to be spaced apart to form a flow path, and is partitioned into a first supply flow path and a second supply flow path through a partition panel.

A plastic conversion feeding system serves to transport a feedstock through different processing units or stations to a vessel wherein chemical and/or physical reactions occur to produce suitable, useful end products. Various processing units include a homogenizer for breaking up said feedstock, a size reduction device for reducing the feedstock to particles and densifying the same, a heating and/or blending device for heating said feedstock, and a feed conduit connecting said heating and blending device to said vessel. The feedstock conversion unit vessel through various cracking, reforming, condensation, recombination, and recracking operations, produces a mixture of useful gases and condensable gases.

A methane synthesis system according to the present disclosure includes: a co-electrolysis part that obtains hydrogen and carbon monoxide by electrolyzing water and carbon dioxide, a methanation reaction part that obtains a product gas containing methane by a methanation reaction that uses the hydrogen and the carbon monoxide, and a cooler having a distribution channel in which a refrigerant capable of phase transition, is distributed. The cooler cools the methanation reaction part using heat of vaporization from vaporizing at least a portion of the refrigerant on an inside of the distribution channel.

A high-pressure polymerization system having a) a polymerization reactor and b) a reactor blow down system having b1) a reactor blow down vessel, having a circular design over a major portion P having a L/D-ratio in the range from 1.75 to 10.0 and containing an aqueous quenching medium, b2) a release line connecting the polymerization reactor with the reactor blow down vessel and having an outlet located above a maximum level for the aqueous quenching medium, b3) a first emergency valve in the release line to open and close fluid communication between the polymerization reactor and the reactor blow down system, and wherein the release line outlet has a joining piece having an angle () between the central axis and a tangent at the reactor blow down vessel in the range from 5 to 70 and the reactor blow down vessel has a vent stack containing a constricted section.

A process for polymerizing or copolymerizing one or more ethylenically unsaturated monomers with a controlled gas velocity of the gaseous reaction. A process for polymerizing or copolymerizing one or more ethylenically unsaturated monomers at temperatures from 100 to 350 C. and pressures in the range from 110 to 500 MPa, comprising the steps of: (a) compressing a gaseous reaction mixture in a hyper compressor, (b) providing the reaction mixture to each compressing stage through a suction pipe system, and (c) discharging the compressed reaction mixture from the compressing stage through a discharge pipe system.

A continuous synthesis system of urea, including: a reactor, a mixing buffer tank for accommodating a first raw material, a feeding pump for pumping the first raw material to the reactor, a pressure regulating valve connected to the reactor to transfer a second raw material and regulate a pressure of the second raw material, a first heat exchanger connected to the reactor to regulate a temperature inside the reactor to a first preset temperature, and a back pressure valve connected to an end of the reactor away from the feeding pump to maintain a pressure of the continuous synthesis system at a preset pressure. The second raw material is gaseous. The second raw material is fed to the reactor through the pressure regulating valve to react with the first raw material in the reactor to generate a target product.

A plant for continuous catalytic hydrogenation of methylenedianiline (MDA; reactant1) with a hydrogen donor (reactant2), especially a gaseous hydrogen donor, preferably hydrogen (H2), including a conditioning unit for the reactants, a reactor unit for synthesis of PACM, and a separation unit, wherein the conditioning unit includes at least part of the length of the (feed) conduits for reactant1, reactant2 and at least one solvent, at least one heat exchanger in at least one (feed) conduit, at least one mixer for mixing the reactants and/or at least one reactant with at least one solvent; the reactor unit includes at least one fixed bed reactor as main reactor with an immobile catalyst packing.

A plant for hydrogenation of methylenedianiline (MDA; reactant1) with a hydrogen donor (reactant2), especially a gaseous hydrogen donor, preferably hydrogen (H2), including a conditioning unit for the reactants, a reactor unit and a separation unit, wherein the conditioning unit includes at least part of the length of the (feed) conduits for reactant1, reactant2 and at least one solvent, at least one heat exchanger in at least one (feed) conduit, at least one mixer for mixing the reactants and/or at least one reactant with at least one solvent; the reactor unit includes at least one fixed bed reactor as main reactor with an immobile catalyst packing.

An apparatus for partial oxidation hydrocarbons includes a mixing chamber configured to receive a first gas feed stream and a second gas feed stream. One of the first gas feed stream and the second gas feed stream includes a hydrocarbon-containing gas while the other includes an oxygen-containing gas. The mixing chamber includes an outer tube section having a first input port configured to receive the first gas feed stream and an internal flow diverter mounted internally to the outer tube section. The internal flow diverter includes a second input port that receives the second feed gas stream and a flow diverter wall that defines a central flow channel configured for the second gas feed stream to flow therethrough. A tubular flow reactor is configured to support the partial oxidation of the hydrocarbon-containing gas as it flows axially therethrough.