Combined-type heat-exchange radial methanol reactor and methanol synthesis process

Abstract

The invention discloses a combined-type heat-exchange radial methanol reactor. An inner component is installed in an outer housing. An air distribution cavity is formed between the inner component andthe outer housing. The inner component is internally provided with an air collecting cylinder. A reaction area is formed between the air collecting cylinder and the inner component. The reaction areais internally provided with a row tube. The periphery of the row tube is filled with a catalyst. The air collecting cylinder is internally provided with a shell-and-tube heat exchanger. The heat exchanger is provided with a housing and a heat exchange tube installed in the housing. The heat exchanger extends in an axis direction of the outer housing. An air collecting cavity is formed between thehousing of the heat exchanger and the air collecting cylinder. The upper end part of the heat exchanger is provided with an air inlet communicated with a shell pass of the heat exchanger and the aircollecting cavity. The lower end of the heat exchanger is provided with an air outlet communicated with the shell pass of the heat exchanger and a synthesis gas outlet pipe. The invention further discloses a methanol synthesis process adopting the above reactor. The reactor is capable of, in the case of guaranteeing the normal reaction, reducing the total equipment quantity of industrial devices,thereby reducing device investment, and reducing process control points and management difficulty.

Description

technical field [0001] The invention specifically relates to a composite heat exchange radial methanol reactor and a methanol synthesis process using the methanol reactor. technical background [0002] Methanol synthesis is a chemical reaction with strong exotherm. In order to improve the reaction efficiency, it is necessary to remove the excess reaction heat in time during the reaction. Although the current methanol reactors are generally equipped with heat exchangers to transfer the reaction heat At present, tubes are generally installed in the reactor, catalysts are filled around the tubes, cooling water is introduced into the tubes to take away the heat of reaction, and the gas that has completed the reaction is discharged from the reactor and enters the next process. Only at a certain temperature can it be carried out relatively stably, so the temperature of the reaction mixture gas discharged from the reactor is still high, and it needs to be further cooled before ente...

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Problems solved by technology

For the cooling of the reaction mixture gas discharged from the reactor, at present, a special heat exchanger is generally set up to cool it, and the cold source is cooling water or raw gas. No matter which cold source is used, a separate This increases the investment of the entire industrial device, and at the same time, due to the increase in equipment, it also increases the process control points and management costs and difficulties

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