Coal tar hydrogenation micro-interface emulsification bed enhanced reaction system

Abstract

The invention provides a coal tar hydrogenation micro-interface emulsification bed enhanced reaction system, which comprises: an emulsification bed reactor used as a reaction chamber in a coal tar hydrogenation reaction process; a micro-interface generator, which is arranged on the emulsifying bed reactor and is used for crushing the hydrogen into micro-bubbles with the diameter of micron grade inthe micro-interface generator in a preset manner before the hydrogen and coal tar mixed solution in the hydrogenation reaction process enters the emulsifying bed reactor main body; the hydrogen is introduced into the coal tar mixed solution to increase the phase boundary mass transfer area between the hydrogen and the coal tar mixed solution in the reaction process and improve the mass transfer efficiency between reaction phases, and thereby the coal tar hydrogenation reaction is enhanced under the conditions of preset temperature and pressure intensity. According to the invention, the problem that the overall reaction rate is influenced due to low mass transfer rate caused by small phase boundary contact area between hydrogen and coal tar mixed liquor in the use process of the existing emulsion bed hydrogenation reaction strengthening system is effectively solved.

Description

technical field [0001] The invention belongs to the technical field of reaction strengthening, and in particular relates to a coal tar hydrogenation micro-interface emulsified bed strengthening reaction system. Background technique [0002] Gas-liquid, gas-liquid-solid and other gas-liquid reaction processes are widely found in energy, petrochemical, fine chemical and other fields. For gas-liquid heterogeneous reactions such as oxidation, hydrogenation, and chlorination, the macroscopic reaction rate is generally limited by the mass transfer process. The volumetric mass transfer coefficient of gas-liquid reaction is mainly affected by the mass transfer coefficient and the gas-liquid interface area. Previous studies have shown that the phase boundary area has a greater influence on the volumetric mass transfer coefficient and is easy to control. Therefore, increasing the phase boundary area is regarded as an effective way to increase the gas-liquid macroscopic reaction rate...

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Problems solved by technology

[0004] In view of this, the present invention proposes a micro-interface emulsified bed intensified reaction system for coal tar hydrogenation, aiming at solving the problem that the existing emulsified bed hydrogenation reaction intensified system has a relatively small phase boundary contact area between each reaction phase during use. Small, resulting in a low mass transfer rate at the phase boundary, which in turn affects the overall reaction rate

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