Liquid acid alkylation reactor and alkylation reaction method

Abstract

The disclosure relates to a liquid acid alkylation reactor and an alkylation reaction method. The reactor includes a liquid acid inlet (1), a hydrocarbon inlet (2), a hydrocarbon feed distributor (3), a mixed reaction zone and an acid hydrocarbon outlet (5); the hydrocarbon inlet and the liquid acid inlet are located above the mixed reaction zone, and the acid The hydrocarbon outlet (5) is located below the mixed reaction zone; the hydrocarbon feed distributor includes a connected radial distribution part and an axial distribution part, and the pipeline extension directions of the radial distribution part and the axial distribution part are perpendicular to each other; the radial distribution part It is arranged above the mixing reaction zone, and the raw material inlet of the radial distribution part is connected with the hydrocarbon inlet; the axial distribution part includes a feed riser (3.3), the top of the feed riser is connected with the radial distribution part, and the bottom end is a free The end and the bottom extend along the axial direction of the reactor to the inside of the mixing reaction zone, and the pipe wall of the feed riser is provided with a plurality of distribution holes (3.4) at intervals along the axial direction. The alkylation reactor can realize in-situ multi-stage feeding and ensure high alkanes to olefins ratio.

Description

technical field [0001] The present disclosure relates to the technical field of petrochemical liquid acid alkylation, in particular, to a liquid acid alkylation reactor and an alkylation reaction method. Background technique [0002] The alkylation reactor is under the action of an acidic catalyst, the C in the liquefied gas products of catalytic cracking, hydrocracking and other equipment 4 The reaction produces a high octane alkylate. Compared with other gasoline blending components, alkylate has a high octane number and does not contain aromatics, olefins, sulfur, oxygen and other impurities, and is considered an ideal gasoline blending component. [0003] C 4 The alkylation reaction is a fast reaction process, which requires a large contact area between the acid and hydrocarbon phases; and the main reaction rate to generate alkylated oil is lower than that of C 4 Olefin superposition reaction rate. Therefore, the liquid acid alkylation reactor needs not only to stren...

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Problems solved by technology

[0007] The above-mentioned existing alkylation reactors are improving the alkene-ene ratio and liquid-liquid mixing efficiency, but there is still room for optimization

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