Fixed bed up-flow reactor and application thereof

Abstract

The invention discloses a fixed bed up-flow reactor and application thereof. The reactor comprises a reactor shell, and a lower sliding grid, a first catalyst bed layer, a linkage type filtering dustaccumulation layer, a second catalyst bed layer and an upper sliding grid are arranged in the reactor shell in the material flowing direction; the linkage type filtering dust accumulation layer is fixedly connected with the upper sliding grid and the lower sliding grid through supporting rods, a reaction material inlet is formed in the bottom of the reactor shell, and a reaction material outlet isformed in the top of the reactor shell; the reactor is internally provided with a linkage type filtering dust accumulation layer, so that the motion abrasion among catalyst particles can be effectively reduced, the service life of the catalyst is prolonged, the catalyst dust is continuously removed in the reaction process, the reaction uniformity is improved, the rising of the pressure drop of acatalyst bed layer is greatly slowed down, and the long-period stable operation of the reactor is maintained.

Description

Technical field [0001] The invention belongs to the field of petrochemical equipment and relates to an upflow reactor and its application. Background technique [0002] In the petrochemical industry, the hydrogenation process is an important technical means for processing distillate oil and secondary processing oil. Through hydrogenation, the sulfur, nitrogen, metal, colloid, carbon residue and other impurities in the oil can be effectively treated. Removal and hydrogenation of unsaturated hydrocarbons into saturated hydrocarbons. According to the reactor type, the hydrogenation process can be divided into fixed bed hydrogenation process, suspended bed hydrogenation process, and fluidized bed hydrogenation process. Among them, 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 methods: up-flow type, that is, down-feeding, and down-flow type, that is, up-feeding fixed-bed reactor...

AI Technical Summary

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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