Water-power cogeneration system for recovering waste heat of concentrated seawater of desalination and method of system

A technology for concentrated seawater and seawater, which is applied in chemical instruments and methods, seawater treatment, water/sewage treatment, etc., and can solve the problem of waste heat recovery of concentrated hot seawater that has not attracted attention

Active Publication Date: 2014-07-16
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

However, the research on the waste heat recovery of concentrated hot seawater in the humidi

Method used

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  • Water-power cogeneration system for recovering waste heat of concentrated seawater of desalination and method of system
  • Water-power cogeneration system for recovering waste heat of concentrated seawater of desalination and method of system

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Embodiment Construction

[0025] Refer below figure 1 , figure 2 Describe the operation process of the humidification and dehumidification seawater desalination concentrated seawater waste heat recovery hydropower cogeneration system.

[0026] figure 2 It is the humidification and dehumidification desalination seawater desalination hydropower cogeneration combined circulation system proposed by the present invention. The working process of the system is as follows: start the air compressor and compressor regulating valve, fill the closed seawater desalination chamber with air, and close the air compressor and regulating valve when the design pressure is reached; start the solar collector, the primary circuit and the secondary circuit The loop circulation pump heats the heat-carrying medium and the heat-conducting oil, and at the same time opens the seawater booster pump and the fresh water throttle valve. In the seawater heater, the heat-conducting oil transfers heat to the incoming seawater, heati...

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Abstract

The invention relates to a water-power cogeneration system for recovering waste heat of concentrated seawater of desalination and a method of the system, and belongs to the fields of energy and power. The system is characterized by comprising an organic Rankine cycle subsystem; the organic Rankine cycle subsystem comprises a waste heat recoverer for recovering heat carried by the concentrated seawater discharged by a desalination system, an organic turbine regulating valve connected with an outlet of the waste heat recoverer, an organic turbine connected with an outlet of the regulating valve, a steam exhaust regulating valve connected with an outlet of the organic turbine, a heat regenerator connected with the outlet of the steam exhaust regulating valve, and an air cooling condenser connected with an outlet of the heat regenerator; the air cooling condenser is connected with a liquid phase inlet of the waste heat recoverer through an organic working medium pump. The heat carried by the concentrated seawater discharged by the desalination system is fully utilized, so that comprehensive utilization efficiency of heat energy is increased; the turbine cooling an organic working medium with air is adopted to exhaust steam, so that cooling water is saved greatly; the system follows the principle of gradient utilization of energy, and is in line with national objectives of energy conservation and emission reduction and sustainable development strategy of water resources.

Description

technical field [0001] The invention relates to a hydropower cogeneration system and a method for recovering waste heat from humidification, dehumidification, seawater desalination and desalination of concentrated seawater, and belongs to the field of waste heat recovery from medium and low temperature heat sources and power engineering. Background technique [0002] The traditional humidification and dehumidification seawater desalination method is usually carried out under normal pressure. After the hot seawater spray heated by the collector is mixed with the cold air to generate humid air, at the same time the concentrated seawater is directly discharged into the atmosphere. The temperature of seawater is still relatively high, and direct discharge will cause heat loss, which will seriously affect the heat energy utilization efficiency of the seawater desalination system, and will also cause thermal pollution to the environment. Therefore, it is an effective way to improv...

Claims

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Application Information

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IPC IPC(8): F01K27/02F01K25/00C02F1/14C02F103/08
CPCY02A20/124Y02A20/142Y02A20/212
Inventor 何纬峰韩东岳晨蒲文灏吴易飞刘轩黄莺
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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