Material-flow mixing and dispersing device

Abstract

The invention discloses a material-flow mixing and dispersing device, comprising a cylindrical-shaped tube body (1), a vortex mixing chamber (2), a lifting pipe (3), and a rectifier board (4), wherein, the cylindrical-shaped tube body (1) comprises a roof cover plate (5), a circular tube (8) and a circular-tube-body bottom board (9), wherein, the center of the roof cover plate (5) is provided with an opening hole (6), the inside of the cylindrical-shaped tube body (1) is provided with the vortex mixing chamber (2) and the lifting pipe (3), the vortex mixing chamber (2) is located under the roof cover plate (5), the lifting pipe (3) is located under the vortex mixing chamber (2), the bottom of the lifting pipe (3) is connected with the circular-tube-body bottom board (9), the rectifier board (4) is located at the lower part of the cylindrical-shaped tube body (1), and is connected under the circular-tube-body bottom board (9) through a rib plate (17). The gas-liquid material-flow mixing and dispersing device provided by the invention can be used for mixing and dispersing the gas-liquid material-flow in a hydrogenation reactor, the material-flow experiences vortex baffling, gas-phase elevating and swirl dispersing, accordingly, for the high-speed gas-liquid material-flow, full mixture of gas phase and liquid phase is completed, the impulsive force of the fluid is slowed down, and the fluid is evenly dispersed.

Description

technical field [0001] The invention relates to a logistics mixing and dispersing equipment, which is suitable for reducing momentum, fluid dispersion and gas-liquid mixing when fluid enters a large-section watershed from a small cross-section, and more specifically relates to a gas-liquid mixing in a fixed-bed hydrogenation reactor When the stream enters the reactor, the gas-liquid mixture flow is evenly mixed and uniformly dispersed to the entire reactor section. Background technique [0002] In the field of petroleum processing, fixed bed trickle flow reactors are widely used in the hydrorefining of distillate oil, paraffin, lubricating oil, hydrocracking of wax oil and most of the residual oil hydrotreating processes. In a fixed-bed trickle reactor, the gas-liquid mixture flows side by side through the catalyst bed for reaction. Whether the catalyst in the hydrogenation reactor can fully play its role and whether the product quality can achieve high quality depends larg...

AI Technical Summary

Problems solved by technology

The advantage of this inlet diffuser is that it has a simple structure and good buffering effect; the disadvantage is that under the joint action of the variable flow cone and multiple splash plates, the direction of liquid deflection and the amount of liquid phase in each direction after deflection are difficult. control, so the degree of liquid phase bias is greater, and the peak value of liquid phase distribution along the radial direction is also higher

This structure also has the disadvantage of poor mixing effect of gas-liquid flow

[0007] In summary, the currently used inlet diffusers mainly have the following two disadvantages: (1) The mixing time of the gas-liquid stream is short and the mixing is insufficient

(2) For the case where the diameter of the reactor is large, it is difficult for the inlet diffuser to disperse the material uniformly to the entire top distribution plate, and the stream deviation affects the material distribution performance of the distribution plate

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