Novel multi-bed radial fixed bed reactor

Abstract

The invention relates to a novel multi-bed radial fixed bed reactor which is distributed in a barrel shape. The novel multi-bed radial fixed bed reactor comprises a raw material inlet, catalyst beds, high-density porcelain balls, a ring-shaped channel, a center channel, a center channel distributor, a ring-shaped channel distributor, outer side grids, inner side grids, a reactant outlet and baffles, wherein the raw material inlet is formed in the top of the reactor, and the reactant outlet is formed in the bottom end of the reactor; the catalyst beds are distributed in the reactor along the radial direction in a ring barrel shape; the center channel is arranged in the center of the reactor, and the ring-shaped channel is arranged around the outer ring of the catalyst beds; the center channel and the ring-shaped channel are respectively provided with the baffles; the high-density porcelain balls are arranged on the baffles; the outer side grids are arranged at the outer sides of the catalyst beds, and the inner side grids are arranged at the inner sides of the catalyst beds. The novel multi-bed radial fixed bed reactor has the advantages that the sectional feeding proportion can be flexibly adjusted, and the bed pressure drop is effectively reduced.

Description

technical field [0001] The invention relates to a radial fixed-bed reactor for strong exothermic reactions in the chemical industry, in particular to a radial fixed-bed reactor capable of flexibly adjusting segmented feeding ratios and effectively reducing bed pressure drop. Background technique [0002] Fixed bed reactor is a kind of reactor widely used in chemical industry. Fixed bed reactor, also known as packed bed reactor, is a reactor filled with solid catalyst to realize heterogeneous reaction process. The solids are usually granular and piled up into a bed of a certain height (or thickness). The bed is stationary and the fluid passes through the bed to react. The difference between it and the fluidized bed reactor and moving bed reactor is that the solid particles are in a static state. There are three basic types of fixed bed reactors: ①Axial adiabatic fixed bed reactor. ② radial adiabatic fixed bed reactor. ③ Tubular fixed bed reactor. [0003] figure 1 It i...

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Problems solved by technology

The disadvantages of the fixed bed reactor are: ①The heat transfer is poor, and when the heat of reaction is very large, even the shell and tube reactor may have a runaway temperature (the reaction temperature is out of control and rises sharply, exceeding the allowable range)

[0008] like figure 2 As shown, the radial fixed bed reactor has the characteristics of short fluid flow distance, large flow channel cross-sectional area, and small fluid pressure drop, but for large heat release, segmental feeding or segmental injection cooling The working conditions of the medium, the conventional radial fixed bed reactor is difficult to meet the process requirements

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