Peak-regulating power station integrating IGCC and supercritical unit, and peak regulating method

Abstract

The invention discloses a peak-regulating power station integrating IGCC and a supercritical unit, and a peak regulating method. The peak-regulating power station comprises an IGCC power generator set and a supercritical power generator set, wherein a gasifier outlet in the IGCC power generator set is connected with a purification unit synthesized gas inlet, a purification unit outlet is divided into two ways, one way is connected with a combustion chamber of a gas turbine to implement the quick variable load of the peak-regulating power station by regulating the synthesized gas inlet volume of the gas turbine, and the other way is connected with a synthesized gas burner of the supercritical boiler in the supercritical power generator set; an extraction pipeline in steam cylinder of the supercritical steam turbine which is provided with steam by the supercritical boiler is connected with a steam regulator, an outlet of the steam regulator is connected with a combined cyclic steam turbine inlet pipeline in the IGCC power generator set; the two ways are organically fused through the connection and coordinated matching of pipelines among the systems, the quick and deep peak regulating capability of the power station can be realized, and the relatively high power generation efficiency can be kept.

Description

technical field [0001] The invention belongs to the technical field of coal-fired power generation, and relates to a peak-shaving power station integrating IGCC and a supercritical unit and a peak-shaving method. Background technique [0002] Due to the rich coal resources and cheap price in China, coal-fired power generation has occupied a dominant position in my country's power supply for a long time, and more than 70% of the country's electricity is generated by coal-fired power plants every year. After long-term development of coal-fired power generation in my country, the technical capabilities of coal-fired power generation units have been continuously improved, the main steam parameters have been continuously improved, the power generation efficiency has been continuously improved, and the environmental protection performance has also been greatly improved. However, in the context of the continuous development of renewable energy generation represented by wind power, ...

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Problems solved by technology

[0006] The problem solved by the present invention is to provide a peak-shaving power station and a peak-shaving method integrating IGCC and supercritical units, which can realize low-cost low-load stable combustion of supercritical boilers, and enable the power station to have wide-load and fast peak-shaving capabilities It overcomes the shortcomings of large-capacity supercritical thermal power units and IGCC generating units that cannot adapt to the rapid peak regulation of wind power grids due to the difficulty of stable combustion at low loads and the difficulty of quickly changing loads.

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