Inner heat exchange-type bubble column reactor

Abstract

The invention relates to an inner heat exchange-type bubble column reactor. The reactor comprises a bubble column, a gas distributor and an inner heat exchange member. The gas distributor is arranged at the bottom of the bubble column. The inner heat exchange member is arranged in the bubble column and is immersed in reaction materials. The inner heat exchange member comprises a pillow-type heat transfer plate pair and a fluid distribution pipe. The pillow-type heat transfer plate pair is a plate cavity part which is prepared from two metal plates by multiple spot welding and is used for heat exchange of a heat exchange medium. Two ends of the pillow-type heat transfer plate pair are provided with ports respectively connected to fluid distribution pipes. Compared with the prior art, the inner heat exchange-type bubble column reactor has the advantages of flexible structural adjustment, high heat exchange efficiency, low cost and cleaning convenience.

Description

technical field [0001] The invention relates to an internal heat exchange bubble column reactor, in particular to a novel high-efficiency internal heat exchange bubble column reactor. Background technique [0002] The bubble column is a tower reactor in which a distributor is installed at the lower part of the tower to disperse the gas in the liquid for mass transfer and heat transfer. Most suitable for slow chemical reaction systems or reaction systems with large thermal effects. The obvious disadvantages of this type of reactor are: the liquid phase has a large back-mixing; the gas phase has a large pressure drop. When the thermal effect is large, a heat exchange unit can be installed inside or outside the tower. Among them, setting a heat exchange unit in the tower can control the reaction more directly and effectively, and it is also easier to operate. At present, the heat exchange elements in the tower mainly include coiled tubes and column tubes. The cooling or heat...

AI Technical Summary

Problems solved by technology

The obvious disadvantages of this type of reactor are: the liquid phase has a large back-mixing; the gas phase has a large pressure drop

Relevant literature has studied the use of pin-finned tubes instead of light tubes. Pin-finned tubes are pin-shaped fins fixed vertically on the outer wall of the tubes. The pin-finned tubes can not only accelerate fluid turbulence, but also improve fluid distribution and break up large air bubbles; In practical application, it is easy to cause gas short circuit, which is not conducive to industrial amplification

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