An isothermal fixed bed reactor with catalyst installed between heat exchange tubes

Abstract

The invention provides an isothermal fixed-bed reactor in which a catalyst is installed between heat exchange tubes, comprising a pressure-bearing shell, a plurality of heat-exchange tubes and a catalyst installed in the pressure-bearing shell; the plurality of heat-exchange tubes There are gaps between them to form a catalyst filled area, and the gas inlet, the gap between the heat exchange tubes and the gas outlet form a gas channel. In this isothermal fixed-bed reactor, the catalyst is loaded between the heat exchange tubes, and the catalyst loading capacity is large; the heat exchange tube can quickly remove the heat of reaction, and the entire bed basically achieves a uniform temperature effect, without overheating, and side reactions are not easy to occur. Moreover, the invention can make the reactant gas flow in the axial radial direction in the bed layer, can utilize the catalyst to the greatest extent, and can use the catalyst with higher activity and small particles.

Description

technical field [0001] The present invention relates to an isothermal fixed-bed reactor, in particular to an isothermal fixed-bed reactor in which a catalyst is installed between heat exchange tubes. The isothermal fixed-bed reactor can be an axial radial reactor, a pure axial reactor or a Pure radial reactor. Background technique [0002] With the development of chemical production, in order to adapt to different heat transfer requirements and heat transfer methods, a variety of fixed-bed reactor structures have emerged, among which gaseous reaction materials are used to react through a bed composed of solid catalysts. The gas-solid phase catalytic reactor is the most widely used in chemical production. [0003] Fixed-bed reactors are mainly divided into two categories: adiabatic and heat-exchange based on the reaction principle. [0004] The adiabatic fixed bed reactor has a simple structure and is widely used. However, in actual operation, the adiabatic reactor cannot ...

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Problems solved by technology

For example, CN101254442A discloses a pressurized catalytic method for exothermic reaction, which mainly adopts a centrifugal radial flow reactor from inside to outside. Although the catalyst loading is large, the amount of catalyst that the radial flow reaction gas flows through Not big, if the gas purification is not good, it is more likely to cause catalyst deactivation

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