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Industrial waste heat utilization system adopting supercritical carbon dioxide working medium

A technology of industrial waste heat and carbon dioxide, applied in the field of waste heat utilization, can solve the problems of high investment cost and low utilization efficiency of industrial waste heat, and achieve the effect of reducing investment cost, shortening investment recovery period and improving economic competitiveness.

Active Publication Date: 2016-02-03
NUCLEAR POWER INSTITUTE OF CHINA
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  • Abstract
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Problems solved by technology

[0004] The invention provides an industrial waste heat utilization system, which solves the technical problems of low utilization efficiency and high investment cost of industrial waste heat at present

Method used

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  • Industrial waste heat utilization system adopting supercritical carbon dioxide working medium

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Embodiment 1

[0022] see figure 1 , the industrial waste heat utilization system 100 shown in the preferred embodiment of the present invention includes a main process heat source 10, a flue gas heat exchanger 20, a first turbine 30, a first generator 31, a first regenerator 40, a second Regenerator 50 , cooler 60 , compressor 70 , second turbine 80 and second generator 81 .

[0023] The main process heat source 10 is a variety of industrial equipment capable of generating industrial waste heat, such as heating furnaces or heating equipment used in various industries, more specifically thermal power plant boilers, diesel engines, gas turbines, converters, coke ovens, etc.

[0024] The flue gas heat exchanger 20 is arranged in the main process heat source 10, and the gas or liquid with industrial waste heat generated by the main process heat source 10 enters from the primary side inlet of the flue gas heat exchanger 20 and After heat exchange in the flue gas heat exchanger 20 , it is discha...

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Abstract

The invention discloses an industrial waste heat utilization system adopting a supercritical carbon dioxide working medium. The system comprises a main technology heat source providing gas or liquid with industrial waste heat, a smoke heat exchanger for heat exchange and a classification serial type composite circulation loop. The classification serial type composite circulation loop comprises a first generator, a first turbine driving the first generator to generate power, a first heat regenerator, a second heat regenerator, a cooler, a gas compressor, a second generator and a second turbine driving the second generator to generate power. A secondary side outlet of the second heat exchanger passes through the first turbine, the high-temperature side of the first heat regenerator, the high-temperature side of the second heat regenerator and the cooler to be communicated with the gas compressor, and an outlet of the gas compressor is communicated with a secondary side inlet of the second heat exchanger and the low-temperature side of the second heat regenerator. The low-temperature side of the second heat regenerator passes through the low-temperature side of the first heat regenerator and the second turbine to be communicated with a high-temperature side inlet of the second heat regenerator. According to the industrial waste heat utilization system, the industrial waste heat utilization efficiency can be effectively improved, and the investment cost is reduced.

Description

technical field [0001] The invention relates to the field of waste heat utilization, in particular to an industrial waste heat utilization system using supercritical carbon dioxide working medium. Background technique [0002] Waste heat refers to the energy that has not been effectively used in energy utilization systems or equipment. According to statistics, the total waste heat resources of various industries account for about 17%-67% of their total fuel consumption, and the recyclable waste heat resources are about 60% of the total waste heat resources. Electric power, metallurgy, chemical industry, textile, cement and other industries have a large amount of high-temperature waste gas emissions. Recycling the waste heat in high-temperature waste gas is an important measure to reduce energy consumption, energy saving and emission reduction. [0003] Waste heat utilization is generally divided into heat supply and power generation. At present, waste heat power generation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01K25/10F01K7/32F01D15/10F22B1/18F27D17/00
CPCY02P10/25
Inventor 王俊峰黄彦平昝元峰郎雪梅
Owner NUCLEAR POWER INSTITUTE OF CHINA
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