Upflow reactor and its application

Abstract

The invention discloses an up-flow reactor and its application. The up-flow reactor comprises a reactor shell, and a support grid, a catalyst bed, a floating grid and a dust removal combination are arranged in the reactor shell along the material flow direction. The bottom of the reactor shell is provided with a reaction material inlet, and the top of the reactor shell is provided with a reaction material outlet. The floating grid and the dust removal combined layer are arranged in the reactor, which can effectively reduce the movement and wear between the catalyst particles, improve the service life of the catalyst, continuously remove the catalyst dust during the reaction process, improve the reaction uniformity, and greatly reduce the speed of the reaction. The pressure drop of the catalyst bed is increased 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 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