Abstract:
The invention relates to a method for performing chemical processes, where raw materials are heated, wherein a melt pool is produced in a tank or reactor using low-melting metals or metal alloys, wherein the raw materials are metered directly into the melt pool in the lower part of the tank or reactor.
Abstract:
The invention relates to an esterification unit (150) and esterification process for producing crude methyl methacrylate (MMA) from methacrylamide (MAM), which enable particularly to improve the yield, meaning that the organics spent acids are low; and at the same time, providing crude MMA with rather good quality, meaning that MMA concentration in crude MMA is rather high and preferably from 50 wt % to 80 wt %. According to the invention, the esterification unit comprises esterification reactors (1, . . . , 5 (or 6) set up in a serial way so that there is a counter current flow between gaseous phase and liquid phase, the liquid phase flowing from first reactor (1) of the series to last reactor (5 (or 6)), and the gaseous phase flowing from reactor to first reactor (1).
Abstract:
The invention relates to an hydrolysis vessel (200) used during amidification step of acetone cyanohydrin (ACH), in the industrial process for production of a methyl methacrylate (MMA) or methacrylic acid (MAA). The hydrolysis vessel (200) is used for hydrolyzing acetone cyanohydrine with sulfuric acid to produce a mixture comprising α-sulfatoisobutyramide (SIBAM). It comprises at least one cooling system (212; 244) on its internal annular periphery area and it is divided into at least two stages, preferably three, along its vertical wall, each stage (S1 to S3) comprising a ACH feeding inlet (201, 202, 203). Such vessel allows controlling both homogeneity and temperature of the mixture, and thus obtaining a high yield for the hydrolyzing reaction in very safe conditions.
Abstract:
In a production system for vapor-grown carbon nanofibers includes a static mixer and a micro mist nozzle for preventing un-uniform input material from forming impurities, an anti-adhering coating covering an inner wall of a vertical tubular reactor for preventing a catalyst, raw material and carbon fibers from adhering to the inner wall of the vertical tubular reactor, and a sedimentation device into which a dispersant and water are inputted to separate produced carbon fiber compositions from particulate impurities in water.
Abstract:
Apparatus and methods are provided for converting methane in a feed stream to acetylene. A hydrocarbon stream is introduced into a supersonic reactor and pyrolyzed to convert at least a portion of the methane to acetylene. The reactor effluent stream may be treated to convert acetylene to another hydrocarbon process.
Abstract:
A pyrolytic reactor comprising a fuel injection zone, a combustion zone adjacent to the fuel injections zone, an expansion zone adjacent to the combustion zone, a feedstock injection zone comprising a plurality of injection nozzles and disposed adjacent to the expansion zone, a mixing zone configured to mix a carrier stream and feed material and disposed adjacent to the feedstock injection zone, and a reaction zone adjacent to the mixing zone. The plurality of injection nozzles are radially distributed in a first assembly defining a first plane transverse to the feedstock injection zone and in a second assembly transverse to the feedstock injection zone.
Abstract:
An apparatus (10) for preparing acetylene and synthesis gas by partial oxidation of hydrocarbons with oxygen is proposed, comprising a mixing unit (12), a mixing section and a mixing diffuser (16). The mixing unit (12) has a feed orifice (18) for supply of a hydrocarbonaceous stream, a feed orifice (20) for supply of an oxygenous stream, a swirl register and a distributor plate (24). The distributor plate (24) is disposed between the mixing section (14) and the feed orifice (18) for supply of a hydrocarbonaceous stream. The distributor plate (24) has orifices (28). The swirl register (22) is disposed between the feed orifice (20) for supply of an oxygenous stream and the mixing section (14). The mixing diffuser (16) is connected to the mixing section (14).There is a further proposal of a process for preparing acetylene and synthesis gas by partial oxidation of hydrocarbons with oxygen.
Abstract:
The invention relates to a method for performing chemical processes, where raw materials are heated, wherein a melt pool is produced in a tank or reactor using low-melting metals or metal alloys, wherein the raw materials are metered directly into the melt pool in the lower part of the tank or reactor.
Abstract:
A method and a device for the separate introduction of a fuel gas and also of an oxidizing agent into the reaction chamber of a tubular reactor, in order there to be mixed and reacted with the release of heat. Not only the fuel gas but also the oxidizing agent are introduced into the reaction chamber in each case in more than three gas jets, wherein the margin between a fuel gas jet and an oxidizing agent jet as adjacent as possible thereto, on entry into the reaction chamber, is between 2 and 500 mm, preferably between 5 and 50 mm.
Abstract:
The present invention relates to an apparatus of the loop Venturi reactor type for the continuous reaction of liquids with gases, in particular for hydrogenations, oxidations or acetylations, e.g. for the preparation of toluenediamine by hydrogenation of dinitrotoluene, and a process for the continuous reaction of liquid reactants with gaseous reactants in the apparatus. In the apparatus of the invention, the diversion of an internal circulatory flow in the reactor is effected by means of a diversion pan which is arranged underneath a heat exchanger.