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Distributed type residual-heat/residual-pressure power generation system and distributed type residual-heat/residual-pressure power generation method

A power generation system and residual pressure power generation technology, which can be applied to machines/engines, steam engine installations, combined combustion mitigation, etc.

Inactive Publication Date: 2010-09-22
北京力通高科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using waste heat and pressure in this form, all high-quality waste heat sources have to be reduced in quality to match the lowest quality waste heat sources, thus resulting in low energy utilization
In addition, in order to transport steam, it is necessary to lay a large-scale steam transmission pipeline network in the factory, and low-quality steam will have a large loss in the process of long-distance transmission, which will also reduce energy utilization.

Method used

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  • Distributed type residual-heat/residual-pressure power generation system and distributed type residual-heat/residual-pressure power generation method
  • Distributed type residual-heat/residual-pressure power generation system and distributed type residual-heat/residual-pressure power generation method
  • Distributed type residual-heat/residual-pressure power generation system and distributed type residual-heat/residual-pressure power generation method

Examples

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Effect test

example 1

[0045] In the vaporization cooling system of the steel rolling heating furnace of a metallurgical enterprise that produces an average of 4 tons of saturated steam of 0.6-0.8MPa per hour, the output of steam also changes with the change of the output of the heating furnace. Since the steam has no proper use, it can only be vented to the air. With the power generation system of the first embodiment of the present invention, steam is directly introduced into the power generation system from the steam drum of the vaporization cooling system of the heating furnace, and is expanded in the single-screw expander to generate power. The pressure of the steam discharged from the single-screw expander is reduced to 0.05MPa, and after passing through the condenser, it is condensed into water and discharged from the condenser tube. In this way, the power generation system can generate 200 degrees per hour on average and recover 4 tons of valuable condensed water.

example 2

[0047] In a factory with three sets of steam pipe network systems of high pressure (3.4MPa), medium pressure (1.6MPa) and low pressure (0.6MPa), different steam users in the factory need steam pipes with different pressures from 0.1MPa to 3.4MPa steam. Since the amount of steam used by the user varies with the production situation, in order to ensure the amount of steam used by the user at any time, in general, the steam amount of the high-pressure pipe network will be higher than the average steam amount of the high-pressure pipe network to ensure When the steam consumption of the medium-pressure pipeline network suddenly increases, it can be supplemented to the medium-pressure pipeline network; similarly, the steam volume of the medium-pressure pipeline network will also be higher than the average steam consumption of the medium-pressure pipeline network to ensure the steam consumption of the low-pressure pipeline network When it suddenly increases, it can be added to the lo...

example 3

[0050] In the prior art, for a factory industrial furnace with an outlet exhaust gas temperature of 350° C., the flue gas is discharged into the atmosphere through a chimney.

[0051] However, with the power generation system of the second embodiment of the present invention, a waste heat boiler functioning as an evaporator 10 is installed in the flue, and soft water is used as a circulating working medium to generate saturated steam for power generation. The waste heat boiler can produce 2 tons of 0.6MPa saturated steam per hour, and the power generation per hour can reach 80 degrees.

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Abstract

The invention provides a distributed type residual-heat / residual-pressure power generation system and a distributed type residual-heat / residual-pressure power generation method, which belong to the field of residual-heat / residual-pressure power generation. The distributed type residual-heat / residual-pressure power generation system comprises a single-screw expansion machine used as a prime mover and a generator driven by the single-screw expansion machine; and the distributed type residual-heat / residual-pressure power generation method comprises the work application step of the single-screw expansion machine used as the prime mover and the power generation step of the generator. The power generation system has convenient use, does not need to be controlled by a special person, carries out power generation automatically, can utilize middle / small-scale residual-heat / residual-pressure energy of most of modern production enterprises and can be widely suitable for all residual energy with different energy quality.

Description

technical field [0001] The invention relates to a waste heat and pressure power generation system and a waste heat and pressure power generation method, in particular to a distributed waste heat and pressure power generation system and a distributed waste heat and pressure power generation method, and belongs to the field of waste heat and pressure power generation. Background technique [0002] In modern industrial production, a large amount of waste heat and pressure exist in all links of production, some of which have been utilized, but many are still abandoned and not utilized. [0003] At present, the existing waste heat and pressure power generation systems are concentrated in large-scale heavy industrial production enterprises. For example, iron and steel enterprises use waste heat from sintering, converters, and CDQ to generate power, and use blast furnace top pressure to generate power; nonferrous metallurgical enterprises use smelting furnace high temperature Flue ...

Claims

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Application Information

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IPC IPC(8): F01D15/10F01K17/02F01K27/00F01K25/10
CPCY02E20/14
Inventor 王晓宇国相杰刘建军
Owner 北京力通高科技发展有限公司
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