Integrated gasification combined cycle thermoelectric oil gas multi-production process for efficient clean region

Abstract

The invention relates to a combined cycle thermoelectric oil gas multiple co-production process of high efficiency and clean regionally-integrated coal gasification, which includes the steps as follows: (1) the crushed coal is fed into the high pressure high efficiency gasifier for gasification when the air and steam are injected and the temperature and pressure are increased; (2) the coal gas generated through the gasification is divided into an upper layer and the lower layer; the coal gas in the lower layer is processed with dust collection and desulphurization; the coal gas in the upper layer is processed with electrical tar precipitation and desulphurization; (3) clean coal gas and the air are compressed to be fed into a gas turbine; the coal gas and the air are combusted to have expansion to drive the generator to generate electricity for once; (4) the high temperature tail gas is fed into a waste heat boiler to generate steam; the steam enters a steam turbine to drive the steam turbine to generate electricity for the second time; the steam is then used for heat supply or cool supply. The combined cycle thermoelectric oil gas multiple co-production process makes full use of the coal resources and integrates the coal compressed gasification, waste heat boiler supplemental combustion, coal gasification, the tar pyrolysis and the level two to level three pressure technique of the waste heat boiler into a whole to form the multiple co-production process which is applicable to the characteristics of the northern region of China.

Description

technical field [0001] The invention relates to an integrated coal gasification combined cycle (IGCC) thermoelectric process technology, in particular to an integrated coal gasification combined cycle heat, electricity, oil and gas polygeneration process in an efficient and clean area. Background technique [0002] The energy shortage and pollution problems brought about by the rapid economic development are imminent, and the inefficient use of coal resources and serious pollution caused by coal-fired boilers and coal-fired thermal power should be changed as soon as possible, and the multiple pressures brought about by rising oil prices and environmental degradation should be alleviated. It is an urgent task for people in the industry. Integrated gasification combined cycle (IGCC) thermoelectric process technology is to gasify coal first, then purify (precipitate the tar contained in coal, improve the utilization rate of coal resources), desulfurize and dust remove, and then...

AI Technical Summary

Problems solved by technology

[0003] However, the current integrated gasification combined cycle (IGCC) process technology has the following disadvantages: oxygen-enriched gasification is expensive, high operating cost, poor adaptability to coal, chemical raw materials such as tar and sulfur cannot be used, and sulfur and other pollution emissions Inadequate governance and irrational use of resources

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