LNG (Liquefied Natural Gas)/liquid oxygen direct combustion mixed working medium power cycle generation device

A mixed working medium and power cycle technology, applied in the direction of machines/engines, liquefaction, steam generation, etc., can solve the problems of high energy consumption costs, and achieve the effects of reduced investment, simple system, and small storage space

Active Publication Date: 2016-07-13
SOUTHEAST UNIV
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  • Abstract
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Problems solved by technology

Existing CO2 capture schemes mainly deal with combustion products, and there is a problem that energy consumption in the capture process is too expensive

Method used

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  • LNG (Liquefied Natural Gas)/liquid oxygen direct combustion mixed working medium power cycle generation device
  • LNG (Liquefied Natural Gas)/liquid oxygen direct combustion mixed working medium power cycle generation device
  • LNG (Liquefied Natural Gas)/liquid oxygen direct combustion mixed working medium power cycle generation device

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Embodiment

[0023] A LNG / liquid oxygen direct combustion mixed working medium power cycle power generation device, characterized in that it includes a work subsystem, a heat recovery cycle subsystem, and an LNG and liquid oxygen supply and CO2 capture subsystem, wherein,

[0024]The working subsystem includes high-pressure combustor group 1-1, reheat combustor group 1-2, high-pressure turbine 1-3, medium-pressure turbine 1-4, low-pressure turbine 1-5, generator A1- 6. Generator B1-7 and valve group 1-8; the working subsystem uses H2O / CO2 mixed working fluid as the working fluid; the high-pressure combustion chamber group 1-1 is divided into 4 groups, corresponding to the The 4 steam inlet chambers of level 1-3, each high-pressure combustion chamber group 1-1 contains at least one high-pressure combustion chamber 1-1-1; the high-pressure combustion chamber 1-1-1 consists of a high-pressure combustion chamber cylinder 1- 1-1-1, high-pressure combustion chamber burner 1-1-1-2, high-pressure ...

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Abstract

The invention provides an LNG (Liquefied Natural Gas) / liquid oxygen direct combustion mixed working medium power cycle generation device. The device is composed of an acting subsystem, a regenerative cycle subsystem, and an LNG and liquid oxygen supply and CO2 capturing subsystem; a high-pressure combustion room set and a reheat combustion chamber set are used for replacing a boiler and a re-heater; a LNG / liquid oxygen high-pressure and high-temperature combustion product is mixed with supplied water to generate H2O / CO2 mixed steam for realizing expansion power generation in a turbine set; and after a mixed working medium steam exhaust is condensed in a condenser to separate moisture, CO2 is pre-cooled and pressurized and then is liquefied. Inlet pressure and temperature of a turbine working medium are relatively high, a control strategy of a load of a combustion adjuster set is adopted and a low-pressure turbine is disconnected and operated at an off-peak power period, so that the efficiency of the set can be greatly improved; and therefore, functions of large-scale energy storage, zero emission of CO2 and NOx, high efficiency, peak adjustment and the like are realized.

Description

technical field [0001] The invention relates to a power generation device, in particular to an LNG / liquid oxygen direct combustion mixed working fluid power cycle power generation device. Background technique [0002] Large-scale energy storage has become a key link in the future smart grid to balance loads, reduce peak and valley load fluctuations, and ensure the safety and reliability of the power system in terms of consuming low-peak surplus nuclear power and accepting intermittent new energy such as wind power and solar power into the grid. However, pumped storage power plants are restricted by geographical factors, and other energy storage methods have problems in terms of economy. Liquefied natural gas is the main fuel for peak-shaving power generation because it is easy to transport and store. Gas peak-shaving power generation and large-scale energy storage will be the main means to balance the peak and valley of the power grid and stabilize the operation of the power...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01K21/04F22B1/18F25J1/00
CPCF01K21/04F22B1/1853F25J1/0027
Inventor 陈亚平张宝怀吴嘉峰
Owner SOUTHEAST UNIV
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