Coal directly-liquifying process with series counter-current and circulating coal-liquifying reactor

Abstract

The invention is a direct coal liquefaction process that installs refluent reactor, circumfluent reactor and coal liquefied oil on-line hydrogenation reactor in series, concretely, China Direct Coal Liquefaction Process, CDCL. It concatenates solvent and liquefied oil stable hydrogenation to coal hydrogenation liquefaction. The oil produced in more relaxative refluent reactor enters in the on-line hydrogenation reactor, and harden liquefied coal and heavy liquefied oil enter in the circumfluent reactor.

Description

technical field [0001] The invention belongs to the field of coal chemical processing of direct coal liquefaction, specifically, a direct coal liquefaction method of countercurrent, circular flow, and online hydrogenation reactors connected in series, that is, China Direct Coal Liquefaction Process (China Direct Coal Liquefaction Process, referred to as CDCL process). Background technique [0002] The coal liquefaction reactor is one of the most critical equipment in the direct coal liquefaction process. The form of coal liquefaction reactors and their combined use largely determine the characteristics of the direct coal liquefaction process. At present, most of the reactors used in the direct coal liquefaction process in the world are single bubbling bed, fluidized bed or loop reactor with forced circulation. It is difficult for these single reactors to satisfy the coal liquefaction reaction at the same time. The light liquefied products of the coal liquefaction reaction ...

AI Technical Summary

Problems solved by technology

It is difficult for these single reactors to satisfy the coal liquefaction reaction at the same time. The light liquefied products of the coal liquefaction reaction have a short residence time in the reactor, and the difficult-to-liquefy coal and heavy coal liquefied products have a long residence time in the reactor and have high mass transfer with gas phase hydrogen. rate and longer response time requirements

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