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Organic Rankine cycle power generation system capable of directly recycling waste heat of black water

A Rankine cycle and power generation system technology, which is applied in the direction of machines/engines, mechanical equipment, steam engine devices, etc., can solve the problem of low black water utilization efficiency, and achieve the effect of simple structure, reasonable design, and convenient control

Pending Publication Date: 2020-06-16
南京天加能源科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to improve an organic Rankine cycle power generation system that directly recovers black water waste heat, which can simultaneously recover black water steam and black water liquid waste heat, and provide them to the current problem of low black water utilization efficiency. The organic Rankine cycle power generation system generates power, converts low-grade waste heat into high-grade electric energy, and improves energy utilization

Method used

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  • Organic Rankine cycle power generation system capable of directly recycling waste heat of black water
  • Organic Rankine cycle power generation system capable of directly recycling waste heat of black water

Examples

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Embodiment 1

[0019] Embodiment one, such as figure 1 shown.

[0020] An organic Rankine cycle power generation system that directly recovers waste heat from black water, including a flash separator 1, a cooler 3, a low-pressure flash tank 5, an evaporator 7, a preheater I13, a preheater II15, an expander 19, Generator 20 , condenser 21 and cooling tower 24 . The exhaust port of the expander 19 passes through the first pipe of the condenser 21, the working medium pump 22, the second pipe of the preheater II15, the second pipe of the preheater I13 and the first pipe of the evaporator 7 in sequence. The two pipes are then connected to the air inlet of the expander 19, and at the same time, the expander 19 is connected to the generator 20 to form an organic Rankine cycle power generation system. The inlet of the first pipe of the evaporator 7 is connected to the vapor side outlet of the flash separator 1 , and the outlet is connected to the low-pressure flash tank 5 . The inlet of the first...

Embodiment 2

[0026] Embodiment two, such as figure 2 shown.

[0027] The structure of the second embodiment is basically the same as that of the first embodiment, the main difference is that the second embodiment also includes a regenerator; the second tube of the regenerator is connected in series with the first tube of the expander and the condenser. Between the tubes, the first tube is connected in series between the condenser and the preheater. During operation, the working medium gas that has done work is discharged from the expander, first enters the regenerator to exchange heat with the liquid working medium, and then enters the condenser to be cooled into liquid, which can preheat the liquid working medium and improve the organic Rankine The efficiency of the circulatory system. At the same time, the exhaust heat of the expander can be fully recovered, and the energy utilization rate can be improved.

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Abstract

The invention relates to an organic Rankine cycle power generation system capable of directly recycling waste heat of black water. The organic Rankine cycle power generation system comprises an organic Rankine cycle power generation system body and further comprises a flash separator, a low-pressure flash drum and a preheater, wherein the organic Rankine cycle power generation system body is composed of an expansion machine, an electric generator, an evaporator and a condenser; the exhaust port of the expansion machine sequentially passes through a first pipe of the condenser, a second pipe ofthe preheater and a second pipe of the evaporator to be connected with the air inlet of the expansion machine; the expansion machine is connected with the electric generator; the inlet of a first pipe of the evaporator is connected with the gas side outlet of the flash separator; the outlet of the first pipe of the evaporator is connected with the low-pressure flash drum; the inlet of a first pipe of the preheater is connected with the water side outlet of the flash separator, and the outlet is vented; and a second pipe of the condenser is connected with a cooling tower to form closed coolingcycle. The organic Rankine cycle power generation system can simultaneously recycle waste heat in black water steam and black water liquid and provides the waste heat for the organic Rankine cycle power generation system for power generation to increase the energy utilization ratio.

Description

technical field [0001] The invention relates to a heat energy device, especially a power generation system, in particular to an organic Rankine cycle power generation system which directly recovers waste heat from black water. Background technique [0002] For black water waste heat recovery, the current common practice is to pass black water through a high-pressure flash tank to generate black water flash steam, which is cooled by a cooler to form condensate, and the condensate enters a low-pressure flash tank for reuse. In this way, the waste heat of black water flash steam is wasted, not only does not produce economic benefits, but also consumes a large amount of circulating cooling water. [0003] Therefore, it is necessary to improve the existing black water utilization method to improve energy utilization efficiency. Contents of the invention [0004] The purpose of the present invention is to improve an organic Rankine cycle power generation system that directly re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01K27/02F01K25/10F01D15/10
CPCF01K27/02F01K25/10F01D15/10
Inventor 李健袁智威雷卫伟黄建宿立强
Owner 南京天加能源科技有限公司