Purification separation system for hydrogasification synthesis gas and process of purification separation system

Abstract

The invention discloses a purification separation system for hydrogasification synthesis gas. The purification separation system mainly comprises a synthesis gas system, a hydrogen system and a boiler water system, wherein the synthesis gas system comprises a gasifier; the synthesis gas of the synthesis gas system is separated by using a cyclone separator, is further fed into a synthesis gas waste heat boiler, and further passes through a synthesis gas filter, a secondary hydrogen heater, a boiler water supply preheater and a primary separation tank in sequence; the synthesis gas passing through the primary separation tank is further fed into a secondary separation tank after passing through a primary hydrogen heater and a circulation water cooler; the hydrogen system comprises a hydrogen pipeline which is communicated with a primary hydrogen heater and a secondary hydrogen heater; heated hydrogen is introduced into the gasifier;the boiler water system comprises a water supply pipeline introduced to a boiler water supply preheater andthe synthesis gas waste heat boiler. By adopting the purification separation system, the effective purification of the hydrogasification synthesis gas, reasonable graded utilization of energy and classified recycling of products are achieved, and the purposes that the energy consumption is reduced, the equipment investment is lowered and the service life of equipment is prolonged are achieved.

Description

Technical field: [0001] The invention relates to the technical field of coal gasification, and mainly relates to a hydrogenation gasification synthesis gas purification and separation system and a process thereof. Background technique: [0002] Clean fuels and other chemical products obtained from raw coal through hydrogenation gasification have good market prospects in my country. When raw coal is hydrogasified to produce synthesis gas, a large amount of semi-coke, primary oil products, and impurity gases such as H2S are produced. In order to meet the needs of the downstream production process and recover the oil in the syngas, it is necessary to purify and separate the syngas. [0003] At present, the main synthesis gas purification process mainly includes cooling, dust removal, washing and other processes, which generally have the characteristics of long process, high energy consumption and large sewage discharge. Taking coke oven gas cooling as an example, the main pro...

AI Technical Summary

Problems solved by technology

[0003] At present, the main synthesis gas purification process mainly includes cooling, dust removal, washing and other processes, which generally have the characteristics of long process, high energy consumption and large sewage discharge

Images