Deodorization cleaning treatment system for lightweight coal tar

Abstract

The invention provides a deodorization and cleaning treatment system for light coal tar. The technology uses multiple tanks with different treatment functions as modules, and a corresponding pipeline system is designed according to the material flow route. Specifically, the light coal tar first enters the steam stripping tank to remove ammonia and 1.5t / h aromatic compounds in the light coal tar, and then enters the static separation tank to separate the aromatic compounds and Water, used for the finishing of aromatics; at the same time, the 6.5t / h light coal tar discharged from the bottom of the steam stripping tank is dehydrated in the static dehydration tank, and then passes through the desulfurization resin tank, desulfurization catalyst tank, and solid treatment agent tank in sequence , which can effectively remove hydrogen sulfide, mercaptan and some colloid components, so that the color and smell of the oil are significantly improved. After purification, the Saybolt color number is greater than 30, and the sulfur and nitrogen are less than 50ppm. The treated light coal tar can be used as the raw material of the reforming unit, and the whole unit operates under normal temperature and pressure, and the catalyst can be regenerated.

Description

technical field [0001] The invention relates to the technical field of chemical equipment, and further relates to the removal of impurities of lightized coal tar, in particular to a deodorizing and cleaning treatment system for lightened coal tar. Background technique [0002] Lightening of coal tar is a treatment method that uses catalytic hydrogenation to shorten its carbon chain length and reduce its molecular weight. Although the lightening method of the prior art can obtain lightized coal tar with better combustion performance, the product contains Sulfur and nitrogen content are high, and the color is dark, with many impurities and complex components, so it cannot be directly used as raw materials for downstream devices. In this case, it is necessary to develop a targeted impurity removal method for the lightening products of coal tar, in order to reduce the impurity content and realize the deep purification treatment of lightening coal tar. However, the design of thi...

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the technical defects of the prior art, and provides a deodorization and cleaning treatment system for lightized coal tar to solve the problem of sulfur, Technical problems of high nitrogen content, darker color and higher impurities

[0004] Another technical problem to be solved by the present invention is that the relevant processing methods in the prior art are not effective

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