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Brayton-cascade steam Rankine combined cycle power generation system

A Rankine cycle and steam technology, which is applied in the field of Breton-cascade steam Rankine combined cycle power generation units, can solve the problems of difficult organization of heat balance, low quality of waste heat, difficulty in recycling, etc., and achieves reduction in size and ratio. The effect of reducing the capacitance and improving the thermal efficiency of the cycle

Active Publication Date: 2013-05-01
NANJING RECLAIMER ENVIRONMENTAL TEKNIK
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this part of waste heat resources is a huge waste, it is difficult to recycle it. The main reasons are: (1) The quality of waste heat is low, and no effective utilization method has been found; (2) Recovery of this part of waste heat is often harmful to boilers. It is risky to make major changes to the original thermal system; (3) The heat balance problem is difficult to organize, and it is difficult to use it directly in the factory. It is often necessary to look for suitable heat users outside, and the heat load of heat users is often Will fluctuate, limiting the generalizability of the recovery method

Method used

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  • Brayton-cascade steam Rankine combined cycle power generation system

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Embodiment 1

[0039] Such as figure 1 As shown, a Bretton-cascade steam Rankine combined cycle heat and power cogeneration device includes a Bretton cycle, a steam Rankine cycle at the high pressure end, and a steam Rankine cycle at the low pressure end:

[0040] The air 23 is sent to the combustion equipment 25 through the compressor 24, fully combusted with the incoming fuel 28, and the generated high-temperature flue gas enters the gas turbine 26, drives the gas turbine generator 29 to generate electricity, and completes the gas turbine unit Breton cycle.

[0041] The steam Rankine cycle at the high-pressure end refers to the saturated steam 2 coming out of the waste heat boiler body 1, passing through the high-pressure superheater 3 to form a high-pressure superheated steam 3-1, and sending it to the high-pressure steam turbine 4 to drive a generator to generate electricity; the high-pressure steam turbine 4 comes out The exhausted steam is condensed into condensed water 6 in the high-...

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Abstract

The invention relates to a Brayton-cascade steam Rankine combined cycle power generation system. The gas exhaust of a Brayton cycle is adopted as a heat source for a high-temperature end steam Rankine cycle, a steam condenser in a high-pressure end steam Rankine cycle is adopted as one of heat sources for a low-pressure end steam Rankine cycle, the latent heat of vaporization of the steam in the high-pressure end steam Rankine cycle is efficiently recovered to be used for power generation in the low-pressure end steam Rankine cycle, consequently, the load of the steam condenser of the conventional steam Rankine cycle system can be effectively reduced by more than absolute 20 percent, and by adopting a system optimization technique, the absolute thermal efficiency of the cycles of the whole system can be increased by more than 5 percent. The Brayton-cascade steam Rankine combined cycle power generation system not only can be used in the energy-saving alteration of conventional units, but also can be used in the design and construction of new units, and economic, social and environmental protection benefits are remarkable.

Description

technical field [0001] The invention relates to a Breton-cascade steam Rankine combined cycle power generation device, specifically belonging to the technical field of thermal power plant power devices. Background technique [0002] Gas-steam combined cycle has a series of advantages such as high thermal efficiency, fast start-up speed, good environmental protection conditions, short installation period, low investment cost, etc., coupled with the rapid development of gas turbine technology in recent years, the single unit power of gas turbine is also increasing continuously, combined cycle The research has attracted the attention and implementation of countries all over the world. [0003] The research on combined cycle power generation technology in foreign countries began in the late 1960s. After decades of development, at present, the gas-steam combined cycle power generation technology in many developed countries such as the United States, the United Kingdom, and Japan ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01K23/10F01K25/00F01K17/02F02C6/16F22B1/18F22B31/08
CPCY02E60/15Y02E20/14Y02E20/16Y02E60/16
Inventor 王海波
Owner NANJING RECLAIMER ENVIRONMENTAL TEKNIK
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