A fixed bed upflow reactor and applications thereof

Abstract

The invention discloses a fixed bed up-flow reactor and application thereof. The reactor comprises a reactor shell, and a supporting grid, a lower catalyst bed layer, a sliding grid layer, an upper catalyst bed layer and a gland grid are arranged in the reactor shell in the material flowing direction; a reaction material inlet is formed in the bottom of the reactor shell, a reaction material outlet is formed in the top of the reactor shell, and the sliding grid layer comprises an upper sliding grid and a lower sliding grid; the reactor can also be provided with a catalyst dust filtering layerand a gland. The fixed bed up-flow reactor can effectively control the expansion and contraction degree of the catalyst bed layer, prevent the catalyst from causing particle abrasion in the floating process, and reduce the generation of dust while protecting the catalyst.

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 field of petrochemical industry, hydrogenation process is an important technical means for processing distillate oil and secondary processed oil. Through hydrogenation, impurities such as sulfur, nitrogen, metals, colloids, and residual carbon in oil products can be effectively removed. Removal and hydrogenation of unsaturated hydrocarbons to saturated hydrocarbons. According to the type of reactor, the hydrogenation process can be divided into fixed bed hydrogenation process, suspension 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: upflow type, that is, bottom feed and downflow type, that is, top feed fixed ...

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

Images