A continuous reaction process and reactor for methanol conversion to produce hydrocarbon mixture

Abstract

The invention discloses a continuous reaction process utilizing methanol conversion to prepare a hydrocarbon mixture. The continuous reaction process comprises the following steps: raw material methanol enters a reactor from the pipe orifice at the top of the reactor; the methanol leaves the reactor from the first pipe orifice in the side wall of the reactor after the reaction of converting the methanol into the hydrocarbon mixture is completed in a first catalyst separating bed layer; when methanol penetration occurs in the previous catalyst separating bed layer, the next catalyst separating bed layer is put into the reaction through switching over outlets until all the valves of the pipe orifices in the side wall of the reactor are closed, only the top pipe orifice and the bottom pipe orifice of the reactor are opened, and the last catalyst separating bed layer in the reactor is in a using state at the moment. The continuous reaction process and the reactor have the advantages that the operation is simple, the continuous operation time is long, and the utilization rate of catalyst reaction activity during the reaction process is high.

Description

technical field [0001] The invention belongs to a continuous reaction process and a reactor for converting methanol to prepare hydrocarbon mixtures. Background technique [0002] There are a large number of technical patents for methanol conversion to produce hydrocarbon mixture technology, such as US Patent 3931349, 4998899 is the patent of methanol conversion to produce hydrocarbon products published by Mobil Corporation in the early stage. These patents use a fixed-bed two-stage conversion process. The first stage The reaction is the dehydration of methanol to produce dimethyl ether. The first-stage outlet material, including a mixture of methanol, dimethyl ether and water, enters the second-stage reactor, and generates gasoline fraction products under the action of molecular sieve catalysts. 美国专利4788365,4835329,4885421,5001292,5130101,5167937,5080691,5095159,4767604,4788042,4788369,4808764,4814535,4814536,4826662,4898717,5146032,4973784等,均涉及到固定床甲醇转化制取烃类 Hybrid technology....

AI Technical Summary

Problems solved by technology

[0016] The invention solves the problems of frequent switching of reactors, frequent regeneration of catalysts, and difficult utilization of "residual activity" of catalysts existing in the prior art of methanol conversion in fixed-bed adiabatic reactors for producing hydrocarbon mixtures, and achieves simplification of operation methods and improvement of catalyst activity utilization purpose of efficiency

[0017] Fixed-bed adiabatic reactor methanol conversion to produce hydrocarbon mixture technology The main reason for frequent reactor switching and frequent catalyst regeneration is that the molecular sieve catalyst is deactivated due to continuous carbon deposition during the reaction process

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