Gas-liquid distributor

Abstract

The invention discloses a gas-liquid distributor, which comprises a cover plate and a central tube. The central tube is arranged vertically, the cover plate is horizontally disposed above the central tube, the central tube comprises an inlet part and a liquid drop part, the liquid drop part is below the inlet part, the lower end of the central tube is a central tube outlet, inclined cutting is conducted on the central tube top, a space formed between an inclined incision generated by inclined cutting of the central tube top and the cover plate is the inlet part, multiple rows of metal strip-type screens are distributed along the axial direction of the central tube on the liquid drop part, and a jet mixing device is disposed below the central tube outlet. The gas-liquid distributor provided by the invention is mainly used for a fixed-bed hydrogenation reactor in petroleum refining and chemical industry. The gas-liquid distributor provided by the invention can distribute gas-liquid raw materials evenly on a catalyst bed in the fixed-bed hydrogenation reactor to make the raw materials in full contact with a catalyst so as to lower the temperature difference with a cross section of the catalyst bed, thereby enhancing the oil product quality and lowering the production cost.

Description

technical field [0001] The invention belongs to the field of hydrogenation in petroleum refining and chemical industries, and relates to a gas-liquid distributor used in a fixed-bed hydrogenation reactor. Background technique [0002] The gas-liquid distributor is an important component of the fixed-bed hydrogenation reactor. It is used to evenly spray the gas-liquid phase raw materials onto the surface of the catalyst bed below, so as to fully exert the role of the catalyst in the entire bed, thereby ensuring the quality and quality of the reaction product. yield. The uneven distribution of the liquid phase and the gas phase will affect the macroscopic reaction rate, product yield and catalyst deactivation rate, resulting in reduced catalyst usage, uneven temperature distribution in the catalyst bed, and reduced product quality. Especially since the hydrogenation reaction is mostly a strong exothermic process, the uneven distribution of the reaction feed oil in the catalys...

AI Technical Summary

Problems solved by technology

The uneven distribution of the liquid phase and the gas phase will affect the macroscopic reaction rate, product yield and catalyst deactivation rate, resulting in reduced catalyst usage, uneven temperature distribution in the catalyst bed, and reduced product quality.

Especially because most of the hydrogenation reaction is a strong exothermic process, the uneven distribution of the reaction feed oil in the catalyst bed will lead to local overheating of the bed and coking of the catalyst

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