Tube bundle reaction and rectification integration apparatus

Abstract

The invention discloses a tube bundle reaction and rectification integration apparatus. The apparatus comprises a rectification device and a tube bundle reaction device which are integrally arranged up and down; the rectification device sequentially comprises an internal reflux condenser, a rectifying section, a stripping section and a coil heater from top to bottom, and a first feed inlet is arranged between the rectifying section and the stripping section; and a second feed inlet is arranged at the upper end of the tube bundle reaction device, a second discharging opening is arranged at thelower end of the tube bundle reaction device, and the second discharging opening is communicated with the first feed inlet of the rectification device through a lifting tube. The tube bundle reactionand rectification integration apparatus allows a generated gas phase material to be continuously and timely guided out of the bottom, directly enter the rectification device without condensed and be rectified, so coking deactivation of a catalyst and a material, caused by long-time high temperature state is avoided, secondary reactions are avoided, the generation of byproducts is reduced, and theconversion rate of a product and the selectivity of the reaction process are improved; and the apparatus has a simple structure, and is convenient to operate.

Description

technical field [0001] The invention belongs to the field of chemical reaction and separation equipment, in particular to a tube bundle reaction distillation integration device. Background technique [0002] The traditional chemical preparation process contains reaction and refining units. The reaction equipment mostly uses high-pressure reactors, fixed-bed reactors, fluidized-bed reactors, and tubular reactors. The refining process often uses distillation, rectification, and azeotropic refining. Distillation or extractive distillation and other units. In order to simplify the production process and save energy consumption, the two units of reaction and purification are often integrated in the current production, and the preparation of chemicals is realized in the same device. Still-type reactive distillation is a commonly used device. The process is simple, easy to operate, and intuitive. It is widely used in industrial production. However, there are some problems with thi...

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Problems solved by technology

Still-type reactive distillation is a commonly used device. The process is simple, easy to operate, and intuitive. It is widely used in industrial production. However, there are some problems with this equipment, mainly because the raw materials and catalysts in the reaction process are always at high temperature. The raw material and the catalyst are mixed unevenly, and the catalyst is easy to be coked and deactivated. At the same time, it is difficult to remove the generated product in the reaction process in time, and the secondary reaction is easy to occur, which brings difficulty to the refining and affects the product quality and yield. Rate

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