Inlet diffuser of hydrogenation reactor

Abstract

The invention discloses an inlet diffuser of a hydrogenation reactor. The inlet diffuser comprises an inlet cone, a mounting plate and an injection cover. The whole inlet cone is a conical table-shaped body, the lower part of the inlet cone is a flange-shaped flange, guide columns are arranged on the flange, rotational flow pipes are uniformly distributed on the upper surface of the inlet cone, the upper part of each rotational flow pipe is of an inverted conical closing-in structure, the lower part of each rotational flow pipe is a guide pipe with a guide function, and a rotary guide vane isarranged in each inverted conical closing-in structure. The mounting plate is a circular ring plate, the inner ring of the mounting plate sleeves the outer side of the inlet cone, the guide columns are allowed to penetrate through cylindrical holes of the mounting plate, springs sleeve the guide columns, a gasket and a nut are arranged at the upper end of each guide column, and the two ends of thesprings are fixed on the gaskets and the mounting plate. Injection holes are evenly distributed in the bottom of the injection cover, and the injection cover covers the lower portion of the inlet cone and is fixed to the lower surface of the mounting plate. Gas and liquid can be fully mixed, the injection area is large, bias flow of the liquid phase is effectively avoided, initial distribution ofoil gas entering a reactor can be greatly improved, the reaction operation condition is improved, and the product quality is improved.

Description

technical field [0001] The invention relates to the technical field of diffusers, in particular to a hydrogenation reactor inlet diffuser. Background technique [0002] In recent years, with the gradual upgrading of petrochemical product quality standards and increasingly stringent environmental protection 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 for hydroprocessing is the hydrogenation reactor. Inside the hydrogenation reactor, a mixture of a certain proportion of hydrogen and raw oil is used at a certain temperature and pressure to complete various hydrogenation reactions with the help of catalysts. Since the hydrogenation reaction is a strong exothermic reaction with three phases o...

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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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