Up-flow reactor and application thereof

Abstract

The invention discloses an up-flow reactor and application thereof; the up-flow reactor comprises a reactor shell; a catalyst bed layer supporting grid and a catalyst bed layer are sequentially arranged in the reactor shell in the material flowing direction; an elastic supporting layer is arranged at the lower part of the catalyst bed layer and / or the upper part of the catalyst bed layer; the elastic supporting layer comprises a plastic elastomer bed layer and a ceramic ball supporting layer, the plastic elastomer bed layer comprises a plurality of plastic elastomer units, the plastic elastomer units internally comprise particles prepared from an elastic material, and gaps are formed between the plastic elastomer units and in the plastic elastomer units to serve as channels for fluid to flow through. The invention also provides an application of the up-flow reactor. The plastic elastomer bed layer in the up-flow reactor can deform synchronously along with expansion and contraction of the catalyst bed layer, bed layer pressure drop increase caused by particle abrasion in the floating process of a catalyst is prevented, and long-period stable operation of the up-flow reactor is guaranteed.

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

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