Hydrogenation reactor inlet diffuser

Abstract

The invention discloses an inlet diffuser of a hydrogenation reactor, comprising an inlet cone, a mounting plate and a spray cover; the inlet cone is a conical truncated body as a whole, the lower part is a flange-shaped flange, and the flange is provided with Guide column, swirl tubes are evenly distributed on the upper surface of the inlet cone, the upper part of the swirl tube is an inverted conical closing structure, and the lower part is a guide tube that plays a guiding role. There are rotating guide vanes in the inverted conical closing structure; the mounting plate is a circular The ring plate is sleeved on the outside of the inlet cone with its inner ring, and the guide column passes through its cylindrical hole, the guide column is sleeved with a spring, the upper end of the guide column is provided with a gasket and a nut, and both ends of the spring are fixed on the gasket and the mounting plate; The spray holes are evenly distributed at the bottom of the spray cover, and the spray cover is located under the inlet cone and fixed on the lower surface of the mounting plate. The invention can fully mix the gas and liquid, the spraying area is large, the liquid phase deviation can be effectively avoided, the initial distribution of oil and gas entering the reactor can be greatly improved, the reaction operation condition can be improved, and the product quality can be improved.

Description

technical field [0001] The invention relates to the technical field of diffusers, in particular to an inlet diffuser of a hydrogenation reactor. Background technique [0002] In recent years, with the gradual upgrading of petrochemical product quality standards and the increasingly strict environmental regulations, hydrogenation technology has played an increasingly important role in the oil refining industry. In order to improve economic efficiency and meet the requirements of environmental protection, oil refining enterprises have rapidly expanded the hydrotreating capacity of various oil products. [0003] The key core equipment of hydroprocessing is the hydrogenation reactor. Inside the hydrogenation reactor, a mixture of a certain proportion of hydrogen and feedstock oil is used to complete various hydrogenation reactions with the help of catalysts at a certain temperature and pressure. Since the hydrogenation reaction is a strong exothermic reaction with three phases ...

AI Technical Summary

Problems solved by technology

[0009] In order to solve the technical problems existing in the prior art such as the small distribution area of ​​the liquid phase at the inlet diffuser of the fixed bed hydrogenation reactor, the uneven distribution of the liquid phase along the radial direction, and the tendency to appear biased wall flow, the present invention provides a hydrogenation reactor inlet diffuser

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