A dual-mass cycle waste heat power generation system

A waste heat power generation and duplex technology, which is applied in the field of duplex cycle waste heat power generation systems, can solve the problems of low waste heat utilization efficiency, achieve the effects of improving cycle thermal efficiency and thermal economy, improving cycle heat efficiency, and improving waste heat utilization efficiency

Active Publication Date: 2015-08-12
陕西擎华新能源技术有限公司
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  • Summary
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the conventional steam cycle, only about 30% of the heat energy is converted into electrical energy, and 70% of the heat is taken away by the circulating cooling water of the condenser during steam condensation, and the efficiency of waste heat utilization is not high

Method used

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  • A dual-mass cycle waste heat power generation system

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Embodiment Construction

[0029] 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.

[0030] see figure 1 , the duplex cycle waste heat power generation system provided by the present invention includes a steam turbine 7 driving a generator 8, and a low-boiling-point working fluid turbine 14 coaxially connected with the steam turbine 7;

[0031] The steam turbine 7 is driven by the steam generated by the waste heat boiler. After the steam generated by the waste heat boiler is transported to the steam turbine 7 to expand and perform work, the exhaust steam flows through the pipeline in turn through the working medium evaporator 10 and the working medium heater 11 for heat exchange, and the heat is released and condensed into The liquid, through the water pump 1, returns to the waste heat boiler to be heated into steam;

[0032] The low boiling point working fluid turbine 14 is...

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Abstract

The invention discloses a double-working-medium circulation waste heat power generating system which comprises a steam turbine and a low-boiling-point working medium turbine. The steam turbine drives a power generator. The low-boiling-point working medium turbine is coaxially connected with the steam turbine. The steam turbine is driven by the steam generated by a waste heat boiler. When the steam generated by the waste heat boiler is conveyed to the steam turbine, the steam acts in an expansion manner, the discharged steam sequentially passes a working medium evaporator and a working medium heater for heat exchange through pipelines, the steam emits heat and is condensed into liquid, and the liquid returns to the waste heat boiler through a water pump and is heated into steam. The low-boiling-point working medium turbine is driven by working medium gas, the working medium liquid sequentially passes the working medium heater and the working medium evaporator, absorbs heat and evaporates to form working medium gas, the working medium gas enters the low-boiling-point working medium turbine and acts in an expansion manner, and the discharged working medium gas after action emits heat through a heat returning device. By the reasonable design of double-working-medium circulation and multiple heat exchanging treatments, the steam discharge waste heat generated during steal circulation can be fully used as the heat source of a low-boiling-point working medium circulation, and waste heat utilization rate can be increased greatly.

Description

technical field [0001] The invention belongs to the technical field of waste heat benefiting, and relates to a waste heat power generation system with duplex circulation. Background technique [0002] In the industrial process, in order to effectively use the waste heat of flue gas or other gas sources to save energy, the conventional waste heat utilization is to heat water through a single waste heat boiler to generate steam, and the steam enters the steam turbine to expand and do work to drive the impeller to rotate, thereby driving the generator to generate electricity . In a conventional steam cycle, only about 30% of the heat energy is converted into electricity, and 70% of the heat is taken away by the circulating cooling water of the condenser during steam condensation, and the efficiency of waste heat utilization is not high. Contents of the invention [0003] The problem to be solved by the present invention is to provide a dual working substance circulation wast...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01K27/02F22B1/18F22B31/08
Inventor 程代京程伯鸿王贤钢
Owner 陕西擎华新能源技术有限公司
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