Microchannel reactor

Abstract

The invention discloses a microchannel reactor. The reactor comprises a cylindrical sealed pressure-bearing shell body (2), a gas inlet pipe (18), a gas outlet pipe (23) and an upside radial catalytic reaction zone, wherein the radial catalytic reaction zone comprises a plurality of radial micro-reaction channels (15) which are of radial arrangement, and flow guiding components (16) which are used for improving a fluid turbulence action are arranged in the radial micro-reaction channels (15). Compared with the prior art, the microchannel reactor provided by the invention is low in active metal consumption, low in bed layer pressure drop and high in raw material conversion ratio and is free of gas bias and short-circuit phenomena, overheated areas of a catalyst are avoided, and the service life of the reactor is prolonged.

Description

technical field [0001] The invention relates to a microchannel reactor. Background technique [0002] At present, there are mainly two types of fixed bed reactors, one is axial fixed bed reactor, and the other is radial fixed bed reactor. The axial fixed bed reactor is relatively easy to design and process, and the operation is simple, but there are problems such as large size of reactor equipment, large pressure drop in the bed layer, easy occurrence of local runaway temperature, slow heat transfer, low conversion rate, obvious amplification effect and reactor Problems with high material grades. The radial bed reactor has a large height-to-diameter ratio, a small bed pressure drop, and a short residence time of the reactants in the catalyst bed, but it is difficult to achieve uniform distribution of the reactants in the radial direction, and the production intensity of the unit catalyst bed is low. [0003] In order to overcome the problems of low heat transfer and mass t...

AI Technical Summary

Problems solved by technology

The Chinese patent with the notification number CN202893334U discloses a microchannel reactor. The microchannel reactor adopts a titanium alloy plate structure, and each titanium alloy cooling cover plate is provided with a cooling chamber and a reaction chamber. The microchannel reactor has the ability to Withstand high pressure and corrosion resistance, the disadvantage is that the reactant stays in the reaction chamber for a short time and the production efficiency is low

The Chinese patent with the notification number CN203540513U discloses a microchannel reactor for the methanation process. The microreaction channel is fixed on the support plate in the middle of the reactor, so it is difficult to eliminate the stress caused by thermal expansion and contraction

The Chinese patent with the notification number CN102151531A discloses a microchannel reactor and its method for the complete methanation of syngas. The microreactor is arranged in parallel with several reaction channels and heat transfer channels alternately, and the pressure drop of the reactor is relatively large. Difficult to withstand high pressure

The Chinese patents whose notification numbers are CN204841617U and CN204816459U apply the microchannel reactor to the coal-to-SNG methanation process, and the target product has high selectivity. The disadvantage is that the residence time of the feed gas in this type of reactor is relatively short. low raw material conversion rate

Images