Perturbator structure for gas-phase aldehyde hydrogenation reactor

Abstract

The invention discloses a perturbator structure for a gas-phase aldehyde hydrogenation reactor. The structure comprises a pipe body; a cavity is formed in the pipe body; first partition plates are arranged in the cavity; an air inlet is formed in one side of the upper part of the pipe body; air outlet is formed in one side of the lower part of the pipe body, and the air inlet and the air outlet are both located between the two first partition plates. A plurality of tiny pipes are fixedly arranged between two first partition plates in a penetrating manner; and the upper part and the lower partof the pipe body are both provided with a through opening used for enabling a heat carrier to circulate inside and outside the pipe body. A disturbance structure is arranged on the pipe body; throughthe perturbator structure for a gas-phase aldehyde hydrogenation reactor, the disturbance structure is adopted; a conventional technology is optimized, the heat carrier can enter the cavity from the two ends of the pipe body at the same time; furthermore, the heat removed from the upper part of the pipe body is the same as the heat removed from the lower part of the pipe body, the temperature difference between the upper part and the lower part of the pipe body is eliminated, the selectivity of a catalyst in the upper part of the pipe body is guaranteed, the service life of the catalyst is ensured, the excess temperature of the upper part of the pipe body is prevented, and thus the production of alcohol is guaranteed.

Description

technical field [0001] The invention relates to the technical field of chemical reactors, in particular to a disturber structure for a gas-phase aldehyde hydrogenation reactor. Background technique [0002] The gas-phase hydrogenation reaction of aldehyde is a hydrogenation reaction after the aldehyde is vaporized and mixed with hydrogen, and the gas-phase mixed aldehyde reacts to generate n-butanol and isobutanol under the action of Cu / Zn hydrogenation catalyst. In the alcohol synthesis process, the aldehyde gas-phase hydrogenation reactor is the core equipment of the process. Whether the performance of the reactor is good or not directly affects the effect of the chemical reaction and the separation of products. The design of the Jiaqing reactor needs to consider the medium, transmission Heat and other physical processes and primary and secondary chemical reaction processes. Disturbance is the change of things under natural or human intervention. [0003] The gas-phase h...

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Problems solved by technology

[0004] The shell-and-tube fixed-bed reactor used in the gas-phase hydrogenation reaction of propionaldehyde is similar to the shell-and-tube heat exchanger. The tube is filled with catalyst, and the gas-phase mixed aldehyde enters the tube from the upper part of the tube body, and reacts through the catalyst layer to form alcohol. Finally, it is discharged from the lower part of the other side, and a plurality of thin tubes for passing the heat carrier are passed into the tube. The heat carrier enters the thin tube from the bottom of the tube body, absorbs a large amount of heat generated by the reaction in the tube body, and then discharges from the top of the tube body. , as the gas-phase mixed aldehyde enters from the upper part of the tube body, a chemical reaction will occur and a large amount of heat will be released, so that the heat in the tube body will be relatively high. Continuously absorbing heat, its heat-absorbing capacity will gradually decrease. When it reaches the upper part of the pipe body, the heat-absorbing capacity of the heat carrier will decrease, so that less heat will be removed from the upper part of the pipe body, so the temperature of the upper part of the pipe body will be higher. The temperature difference between the upper part and the lower part is large, which is not conducive to the formation of products, but also reduces the selectivity and life of the upper catalyst.

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