Coal tar dehydration process

Abstract

The invention discloses a coal tar dehydration process, and relates to the technical field of coal tar dehydration treatment. The process comprises the following steps: adding a proper amount of demulsifier into coal tar subjected to ammonia water separation and a slag removal treatment, uniformly stirring; conveying the uniformly stirred coal tar into a standing dehydration device by utilizing atransfer conveying device, standing for 24-36 hours, preheating the coal tar to 100 DEG C by the transfer conveying device before conveying work, working at a constant temperature of 100 DEG C in thetransfer conveying process; feeding the coal tar subjected to standing into a heating dehydration device for further dehydration; adding macromolecular water-absorbing particles into the further dehydrated coal tar, uniformly stirring by utilizing a stirring device; feeding the uniformly stirred coal tar and polymer water absorption particles that absorb the residual water into a filtering devicetogether, and separating the particles from the coal tar. Partial dehydration can be carried out in the conveying process, the time consumed in the whole dehydration process is shortened, and the subsequent deep processing efficiency of coal tar is improved.

Description

technical field [0001] The invention relates to the technical field of coal tar dehydration treatment, in particular to a coal tar dehydration process. Background technique [0002] Coal tar is one of the products of crude gas produced by pyrolysis of coal in the coking industry. Its output accounts for about 3%-4% of the furnace coal, and its composition is extremely complex. In most cases, it is specially separated and purified by the coal tar industry. Take advantage of it. Its product is black viscous liquid under normal temperature and pressure, and each fraction can be further processed to separate various products, such as moth balls, asphalt, plastics, pesticides, etc. [0003] At present, the water content of coal tar produced by coal chemical equipment is generally above 5%. However, the deep processing of coal tar generally requires the water content of coal tar to be less than 0.5%. Since the proportion of most coal tar is higher than or close to that of water, ...

AI Technical Summary

Problems solved by technology

[0003] At present, the water content of coal tar produced by coal chemical equipment is generally above 5%. However, the deep processing of coal tar generally requires the water content of coal tar to be less than 0.5%. Since the proportion of most coal tar is higher than or close to that of water, so It is difficult to separate, and the standing method adopted by the manufacturer can remove most of the water, but it takes a long time and needs to be improved urgently

Images