A control optimization method for low calorific value gas-steam combined cycle power generation
A technology of combined cycle power generation and gas steam, which is applied in the direction of steam engine device, gas turbine device, combined combustion mitigation, etc. It can solve the problems of long start-up time and low operation efficiency, achieve the optimization of start-stop operation time, protect the environment and reduce energy loss Effect
Inactive Publication Date: 2020-02-14
SHANDONG QIQUAN ENERGY TECH CO LTD
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[0004] In order to solve the above problems, the present invention proposes a control optimization method for low calorific value gas-steam combined cycle power generation. The present invention effectively solves the problem of gas-steam combined cycle by adjusting the boiler start-up process and optimizing the oil-gas switching process. The problem of long start-up time and low operating efficiency of the power generation system
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[0025] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0026] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
[0027] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinatio...
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The invention discloses a low heat value combined gas-vapor cycle power generation control optimization method, wherein the heat of waste heat flue gas in a combustion engine oil combustion process after the ignition of a combustion engine is introduced into a boiler so as to be used for heating and starting the boiler, such that the independent boiler starting, the combination of the combustion engine to the grid and the oil-gas switching are simultaneously performed until the steam is combined into a steam pipe network. According to the present invention, the start and stop operation time ofthe boiler is optimized, such that the gas power generation startup time can be effectively shortened, the energy loss during the startup can be reduced, and the overall efficiency can be improved; and the heat of the combustion engine during the oil combustion is used for starting and heating the waste heat boiler, such that the waste heat flue gas is effectively utilized, the energy is saved, the empty discharge is not generated, and the environment is protected.
Description
technical field [0001] The invention relates to a control optimization method for low heat value gas-steam combined cycle power generation. Background technique [0002] The waste heat boiler of the gas-fired power generation system is an important part of using the waste heat flue gas heated by the gas turbine to generate steam to drive the steam turbine for combined cycle power generation. Due to the needs of process media and production adjustments, the waste heat boiler starts and stops frequently. According to the normal production rhythm, gas-fired power generation Many sets of waste heat boilers currently in operation start and stop about 20 times a month on average. The length of time from start-up to combination affects the start-up time of the entire system, which is an important link in mining system efficiency. According to the conventional practice, the waste heat boiler is started after the oil-gas switching of the gas turbine is successful. Before the oil-gas ...
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IPC IPC(8): F02C6/00F01K11/02
CPCF01K11/02F02C6/00Y02E20/16
Inventor 侯枕云
Owner SHANDONG QIQUAN ENERGY TECH CO LTD