An upflow hydrogenation reactor and its application

Abstract

The invention discloses an upflow hydrogenation reactor and its application. The reactor includes a reactor shell, and a floating hydrogen supply filter dust layer and a catalyst bed are arranged in the reactor shell along the material flow direction; the reactor The bottom of the shell is provided with a liquid-phase material inlet, the top of the reactor shell is provided with a reaction material outlet, and the side wall of the reactor shell is provided with a hydrogen inlet. The reactor is equipped with a floating hydrogen supply filter dust layer, which cleverly combines the hydrogen supply and filter dust between the catalyst beds, which can effectively control the degree of hydrogenation reaction, improve reaction efficiency and reaction uniformity, and greatly inhibit During the reaction process, the wear between the catalyst particles and the in-situ removal of the catalyst dust can improve the service life of the catalyst, greatly slow down the pressure drop of the catalyst bed, and maintain the long-term stable operation of the liquid phase 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 ...

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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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