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System and method for comprehensive utilization of circuiting water resource of thermal power plant

A technology of water resources and thermal power plants, applied in the field of comprehensive utilization system of circulating water resources in thermal power plants, can solve problems such as energy waste, water resource waste, and failure to meet the maximum water production of equipment

Active Publication Date: 2016-01-27
中盐吉兰泰氯碱化工有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] In order to meet the process requirements, the circulating water of thermal power plants needs to be continuously replaced with raw water or reclaimed water during operation, which causes a lot of waste of water resources and brings huge pressure to the subsequent sewage treatment.
The heat brought by the circulating water from the steam turbine condenser is also directly discharged to the atmosphere by the cooling tower, resulting in a great waste of energy
[0003] At present, the raw water of the water company is directly processed through the water purification device. According to the instructions of the water purification device, the temperature of the raw water is controlled at 26°C, and the equipment produces the largest amount of water. The temperature of the raw water from the ground is generally 0-4°C. Meet the maximum water production requirements of the equipment, thus causing a lot of waste of water resources

Method used

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  • System and method for comprehensive utilization of circuiting water resource of thermal power plant

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Effect test

Embodiment 1

[0027] Embodiment 1: A comprehensive utilization system of circulating water resources in thermal power plants, which includes a high-speed filter 1, a circulating water filter well 2, a circulating water pump 3, a steam turbine device, a circulating water cooling tower 4, a water delivery pump 5 and a water purification device. The steam turbine device includes a steam turbine condenser 6 , a steam turbine oil cooler 7 , a steam turbine air cooler 8 and a mechanical seal cooling device 9 . The water purification device includes an ultrafiltration raw water tank 10, a multi-media filter 11, an ultrafiltration device 12 and a reverse osmosis device 13. The ultrafiltration device 12 is a Norit ultrafiltration device, and the reverse osmosis device 13 adopts Dow anti-pollution reverse osmosis membrane. The water inlet of the high-speed filter 1 is provided with the first dosing pump 14, the water outlet of the high-speed filter 1 is connected with the water inlet pipeline of the ...

Embodiment 2

[0028] Embodiment 2: Utilize embodiment 1 thermal power plant circulating water resources comprehensive utilization system, the thermal power plant circulating water resource comprehensive utilization method of implementation, it comprises the following steps: (1) cooling tower replenishes water; (2) circulating water treatment in cooling tower; (3) ) circulating water purification treatment;

[0029] (1) Cooling tower replenishment: The raw water is drawn out from the pipeline of the water company, filtered by the high-speed filter 1, sent to the circulating water filter well 2, and then supplied to the steam turbine device for heat exchange through the circulating water filter well 2. After heat exchange, the raw water is sent to into the circulating water cooling tower 4; after the raw water with lower temperature is supplemented into the circulating water, the vacuum degree of the steam turbine condenser can be improved, and the power generation capacity of the equipment can ...

Embodiment 3

[0033] Embodiment 3: utilize embodiment 1 thermal power plant circulating water resources comprehensive utilization system, the thermal power plant circulating water resource comprehensive utilization method of implementation, it comprises the following steps: (1) cooling tower replenishment; (2) circulating water treatment in cooling tower; (3) ) circulating water purification treatment;

[0034] (1) Cooling tower replenishment: The raw water is drawn out from the pipeline of the water company, filtered by the high-speed filter 1, sent to the circulating water filter well 2, and then supplied to the steam turbine device for heat exchange through the circulating water filter well 2. After heat exchange, the raw water is sent to into the circulating water cooling tower 4; after the raw water with lower temperature is supplemented into the circulating water, the vacuum degree of the steam turbine condenser can be improved, and the power generation capacity of the equipment can be...

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Abstract

The invention discloses a system and a method for comprehensive utilization of the circulating water source of a thermal power plant. The system comprises a high-speed filter, a circulating water screen well, a circulating water pump, a turbine device, a circulating water cooling tower, a water-delivery pump and a water purification device. The method comprises steps as follows: (1), water replenishment of the cooling tower; (2), circulating water treatment in the cooling tower; (3), circulating water purification treatment. The system and the method have the advantages as follows: (1), raw water is replenished in the circulating water for cooling a condenser, the vacuum degree can be increased, and the turbine operation efficiency is improved; (2), the replenished raw water can optimize the circulating water quality, then the circulating water is pumped out for use, pumping and replenishing balance is realized, the circulating water is in positive cycle, and meanwhile, zero blowdown of the cooling tower is realized; (3), ultrafiltration and reverse osmosis are facilitated, and water yield is increased.

Description

Technical field: [0001] The invention relates to a system and method for comprehensive utilization of water resources, in particular to a system and method for comprehensive utilization of circulating water resources in thermal power plants. Background technique: [0002] In order to meet the process requirements, the circulating water of thermal power plants needs to be continuously replaced with raw water or reclaimed water during operation, which causes a lot of waste of water resources and brings huge pressure to the subsequent sewage treatment. The heat brought out by the circulating water from the steam turbine condenser is also directly discharged to the atmosphere by the cooling tower, resulting in a great waste of energy. [0003] At present, the raw water of the water company is directly processed through the water purification device. According to the instructions of the water purification device, the temperature of the raw water is controlled at 26°C, and the equ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/02C02F9/04F01D25/12F01D25/00F28B9/00
Inventor 王成军李海军骆秋福王金涛黄庭江刘思伟王晓雷程智王永忠孟晓亮
Owner 中盐吉兰泰氯碱化工有限公司