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A peak shaving device and method for igcc power station using air separation system energy storage

A technology of air separation system and power station, which is applied in the direction of gas turbine installation, cold treatment separation, and production of combustible gas. The effect of online power

Active Publication Date: 2017-12-01
CHINA HUANENG GRP CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the shortcomings of slow load response and weak peak regulation ability of IGCC power generation system, the present invention proposes an IGCC power station peak regulation device and method using air separation system energy storage, and realizes The ability of IGCC power station to quickly adjust the peak

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  • A peak shaving device and method for igcc power station using air separation system energy storage
  • A peak shaving device and method for igcc power station using air separation system energy storage

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Embodiment Construction

[0027] The present invention will be further described in detail below in conjunction with specific embodiments, which are explanations of the present invention rather than limitations.

[0028] Such as figure 1As shown, an IGCC power station peak-shaving device utilizing air separation system energy storage includes a gasifier 2, a synthesis gas purification unit 3, a gas turbine power generation system, a waste heat boiler system and a steam turbine power generation system. The gasifier 2 Required oxygen is provided by air separation system; Described air separation system comprises the air cooling compression system that provides the frequency-variable regulation of cooling air to rectification tower 22, and air is divided into nitrogen and oxygen in rectification tower 22, deposits respectively Liquid nitrogen storage tank 21 and liquid oxygen storage tank 20, liquid oxygen storage tank 20 is connected with oxygen heater 12 through liquid oxygen pump 18, cold box 17, the h...

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Abstract

The invention discloses an IGCC power station peak regulating device achieving energy storage through an air separation system and a method. The device comprises a gasification furnace, a synthesis gas purification unit, a gas turbine power generation system, a waste heat boiler system and a steam turbine power generation system; oxygen needed by the gasification furnace is supplied by the air separation system; the air separation system comprises an air cooling and compressing system which supplies cooling air to a rectifying tower and can achieve variable frequency regulation, air in the rectifying tower is separated into nitrogen and oxygen, nitrogen and oxygen are stored in a liquid nitrogen storage tank and a liquid oxygen storage tank respectively, the liquid oxygen storage tank is connected with an oxygen heater through a liquid oxygen pump and a cold box, and high-pressure oxygen coming out from the oxygen heater is delivered to the gasification furnace. According to the device and method, the defects that an IGCC power generation system is low in load varying speed and poor in power grid peak regulating capacity are overcome, the capability of quickly regulating the IGCC output power is achieved through the storage capacity of the air separation system, and the whole-plant output power can be increased and decreased by within 20% most quickly in a short time.

Description

technical field [0001] The invention belongs to the technical field of IGCC power generation, and relates to an IGCC power station peak regulation device and method using air separation system energy storage Background technique [0002] Electricity production has the characteristics of being generated as needed, and electric energy cannot be stored on a large scale. Therefore, the power generation side and the power consumption side of the power grid must maintain a balance between power generation and power consumption. The peak-to-valley difference of my country's power grid shows a growing trend. At present, the day-night peak-to-valley difference of some regional power grids has reached more than 60%, and the peak-shaving pressure of the power grid is huge. The composition of my country's grid power generation mainly includes thermal power, hydropower, nuclear power, wind power, etc., among which the proportion of thermal power occupies an absolute dominant position, th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02C6/00F01D15/10C10J3/48C10J3/72F25J3/04
CPCF25J3/04296F25J3/04084F25J3/0409F25J3/04175F25J3/04412F25J3/0449F25J3/04509F25J3/04545F25J3/04593F25J2240/70F25J2240/82Y02E20/16Y02E20/18
Inventor 陈新明张波史绍平闫姝穆延非许东灏
Owner CHINA HUANENG GRP CO LTD
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