BDO (1,4-butanediol) hydrogenation reactor adopting gas-liquid-phase countercurrent bubbling fixed bed

Abstract

The invention relates to a reactor and discloses a BDO (1,4-butanediol) hydrogenation reactor adopting a gas-liquid-phase countercurrent bubbling fixed bed. The BDO hydrogenation reactor comprises a reactor body, a cooler and a circulating pump, wherein the reactor body, the cooler and the circulating pump are mutually connected through a pipeline; the reactor body comprises a gas distributor, a catalyst bed and a liquid distributor, a catalyst is arranged on the catalyst bed, a hydrogen inlet is formed in the gas distributor, and a hydrogen outlet is formed in the liquid distributor; the cooler and the circulating pump are arranged on the pipeline between the gas distributor and the liquid distributor, the cooler is arranged on the pipeline close to the liquid distributor, the circulating pump is arranged on the pipeline close to the gas distributor, a liquid phase inlet is formed in the pipeline between the cooler and the liquid distributor, and a liquid phase outlet is formed in the pipeline between the circulating pump and the gas distributor. The BDO hydrogenation reactor adopts countercurrent contact, so that total temperature in the reactor is relatively uniform, and reaction uniformity and prolonging of the service life of the catalyst are facilitated.

Description

technical field [0001] The invention relates to a hydrogenation reactor, in particular to a gas-liquid phase countercurrent bubbling fixed-bed BDO hydrogenation reactor. Background technique [0002] In the production process of 1,4-butanediol by acetylenic alcohol method, 1,4-butynediol (BYD) will generate 1,4-butanediol (BDO) through hydrogenation reaction under the action of nickel catalyst. The current 1,4-butanediol high-pressure hydrogenation reactor has two forms, one is a trickle fixed-bed reactor with gas-liquid co-current flow downward, and the other is a fixed-bed reactor with gas-liquid co-current flow upward. [0003] For the trickle-flow fixed-bed reactor in which the gas-liquid flows downward, due to the limitation of the flow rate of the liquid phase, the heat generated by the hydrogenation reaction cannot be removed well, and the temperature distribution in the reactor cannot be well controlled, resulting in partial Overheated hot spots are generated, affec...

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Problems solved by technology

[0005] The present invention aims at the disadvantages of low mass transfer reaction power, unbalanced temperature in the reactor, low reaction efficiency and short catalyst life in the prior art. Gas-liquid phase countercurrent bubbling fixed-bed reactor with high reaction efficiency

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