Reaction device for preparing mixed aromatics from methanol

Abstract

The invention discloses a reaction device for preparing mixed aromatics from methanol. The reaction device comprises a methanol evaporator, a reactor body, a compressor, a gas heat exchanger and a gas-liquid separator, wherein the methanol evaporator is connected to the reactor body through a pipeline; the reactor body is connected to an inlet of the gas heat exchanger through a pipeline; an outlet of the gas heat exchanger is connected to an inlet of the gas-liquid separator through a pipeline; an outlet of the gas-liquid separator is connected to an inlet of the compressor; an outlet of the compressor is connected to the methanol evaporator; a heating unit is arranged in the reactor body and is a heat pipe type heat exchanger. According to the reaction device, the structure is simple, the cost is lowered, and the heat energy is recovered; the low-power compressor is adopted for bringing out heat in the reactor body, so that the electrical energy is saved and the service life of the compressor is prolonged.

Description

technical field [0001] The invention relates to the technical field of chemical reaction devices, in particular to a reaction device for preparing mixed aromatics from methanol. Background technique [0002] In the process of preparing aromatics from methanol, the raw material methanol is preheated and vaporized, then heated to 170-300°C and then enters the dehydration reactor, and then enters the conversion reactor at 330-450°C. The high-temperature reactor is first cooled with raw material methanol (that is, circulating cooling through a gas heat exchanger and a compressor, etc.), then passes through other equipment that can recover heat energy, and finally condenses through circulating water or air. [0003] However, in the methanol-to-mixed aromatics reactor, the heat of reaction for the complete conversion of raw material methanol is as high as 1.6MJ / Kg. The traditional reactor takes heat out through the circulating gas, which increases the workload of the compressor. ...

AI Technical Summary

Problems solved by technology

[0003] However, in the methanol-to-mixed aromatics reactor, the reaction heat for the complete conversion of raw material methanol is as high as 1.6MJ / Kg

The traditional reactor takes heat out through the circulating gas, which increases the workload of the compressor. A compressor with a larger power is required to achieve the effect of reducing the temperature of the reactor, and most of the heat becomes waste heat that cannot be recovered.

In addition, some reactors are fluidized bed or tubular reactors, and fluidized bed or tubular reactors will greatly increase the cost, and the technology is extremely difficult and difficult to quantify production

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