A fixed bed flow reactor and its application

Abstract

The invention discloses a fixed-bed flow-type reactor. The reactor includes a reactor shell, in which a lower sliding grid, a first catalyst bed, a linkage filter dust accumulation layer, and a material flow direction are arranged in the reactor shell. The second catalyst bed layer and the upper sliding grid; the filter dust layer is fixedly connected with the upper sliding grid and the lower sliding grid respectively through support rods, and the reaction material inlet is arranged at the bottom of the reactor shell, and the reactor shell The top is provided with a reaction material outlet. The reactor is equipped with a linkage filter dust layer, which can effectively reduce the movement wear between the catalyst particles, improve the service life of the catalyst, continuously remove the catalyst dust during the reaction process, improve the uniformity of the reaction, and greatly slow down the catalyst bed. The layer pressure drop increases to maintain the long-term stable operation of the reactor.

Description

technical field [0001] The invention belongs to the field of petrochemical equipment, and relates to an up-flow reactor and its application. Background technique [0002] In the field of petrochemical industry, hydrogenation process is an important technical means to treat distillate oil and secondary processed oil. Through hydrogenation, impurities such as sulfur, nitrogen, metal, colloid and carbon residue in oil products can be effectively removed. Removal and hydroconversion of unsaturated hydrocarbons to saturated hydrocarbons. According to the type of reactor, hydrogenation process can be divided into fixed bed hydrogenation process, suspended bed hydrogenation process and ebullated bed hydrogenation process, among which the fixed bed hydrogenation process is the most widely used. [0003] According to the feeding method of the fixed-bed reactor, it can be divided into two types: up-flow or down-feed and down-flow or up-feed fixed-bed reactor. The up-flow fixed-bed re...

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Problems solved by technology

Since the catalyst particles cannot pass through the small bed support gap, these particles are likely to block the distributor or bed support, resulting in uneven distribution of fluid, especially gas, which affects the distribution of fluid in the reactor and affects the reaction process. adversely affect

At the same time, it will also be accompanied by the wear and pulverization of the catalyst particles, resulting in a large amount of catalyst dust. These dusts move upward with the reaction materials, and clogging occurs on the surface of the screen or grid, resulting in a rapid increase in the pressure drop of the bed, affecting response start cycle

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