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Single packed tower humidifying heat pump-type solution concentrating system and method

A technology of solution concentration and packing tower, which is applied in chemical instruments and methods, water/sewage treatment, water/sludge/sewage treatment, etc., and can solve problems such as high cleaning costs, difficult operation, and low economic benefits

Inactive Publication Date: 2018-12-18
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

However, in the reverse osmosis method, the pretreatment requirements of seawater are strict, and the utilization rate of raw water is only 75-80%. In addition, high-pressure equipment is required, and the membrane must be cleaned regularly, and the cleaning cost is relatively high.
Distillation is often used to separate and purify liquid mixtures, but traditional distillation has problems such as high energy consumption, low economic benefits, complex device structure, difficult operation, and low heat exchange efficiency.

Method used

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  • Single packed tower humidifying heat pump-type solution concentrating system and method

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Embodiment Construction

[0013] Refer to the attached figure 1 Explain the operation process of the single-packed tower humidification heat pump solution concentration system:

[0014] Start the circulating water pump 14, the cold water 16 enters the hot side of the evaporator 15, exchanges heat with the refrigerant 18 on the cold side, absorbs the cooling capacity of the cold side, then flows out from the outlet of the hot side, and enters the cold end of the heat exchanger 10, The cold energy is transferred to the high-temperature air 6 on the hot side, making it condense into fresh water 12, which then flows out from the outlet on the cold side and enters the circulating water pump 14, so that the cycle reciprocates.

[0015] Start the seawater pump 3, the new seawater 4 and the concentrated seawater 5 are mixed into the total seawater 1, the total seawater 1 is pressurized by the seawater pump 3, enters the cold end of the condenser 2, and exchanges heat with the refrigerant 18 at the hot end, the...

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Abstract

The invention discloses a single packed tower humidifying heat pump-type solution concentrating system and method and belongs to the field of energy saving. The system comprises a condenser (2), a seawater pump (3), a packed tower (7), a fan (9), a heat exchanger (10), a gas-liquid separator (11), a fresh water tank (13), a circulating water pump (14), an evaporator (15), a compressor (17) and athrottle valve (19). The system uses the heat released by the condenser (2) to heat total seawater (1). The cold energy of the evaporator (15) condenses high temperature air (6) so that the thermal efficiency of the system cycle is increased. Air in the packed tower (7) and the heat exchanger (10) is respectively subjected to humidification and dehumidification. The method has the advantages of flexible scale, moderate equipment investment and operation cost, low-level thermal energy use, low technical requirements and device miniaturization. The system saves more energy than the conventionalsystem.

Description

technical field [0001] The invention relates to a single-packed tower humidification heat pump solution concentration system and method, and belongs to the field of energy conservation. technical background [0002] With the shortage of fresh water resources, seawater desalination technology has been paid more and more attention by various countries. At present, many countries have taken seawater desalination as a key technology to solve the problem of fresh water shortage. [0003] Seawater desalination is the process of separating the salt and water in seawater, and finally obtain fresh water and concentrated brine. The main traditional seawater desalination methods include reverse osmosis and distillation. Among them, the reverse osmosis method refers to the process of applying an external pressure higher than the osmotic pressure of the solution on the raw water side of the membrane. When the raw water passes through the semi-permeable membrane, only water is allowed to ...

Claims

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Application Information

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IPC IPC(8): C02F1/10C02F103/08
CPCC02F1/10C02F2103/08
Inventor 岳晨王彬王鹏恩韩东何纬峰蒲文灏
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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