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A heat pump seawater desalination device with cascade preheating and its control method

A heat pump type, cascade technology, applied in chemical instruments and methods, seawater treatment, general water supply conservation, etc., can solve the problems of increased energy consumption, complex implementation, high system sealing requirements, etc., to increase desalination rate and improve utilization efficiency and system energy efficiency ratio, accurate control effect

Active Publication Date: 2018-03-02
永春县产品质量检验所福建省香产品质量检验中心国家燃香类产品质量监督检验中心福建
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Problems solved by technology

[0005] Chinese patent CN202924776U discloses a continuous production bipolar heat pump seawater desalination system, which has the characteristics of low energy consumption and continuous production. Higher sealing requirements of the system
Chinese patent CN202924775U discloses an intermittent small temperature difference heat pump low-temperature seawater desalination system, which has certain significance for energy saving, but the disadvantages of the device are: there are many components, the specific implementation is complicated, a high degree of vacuum is required, and continuous production is not possible

Method used

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  • A heat pump seawater desalination device with cascade preheating and its control method
  • A heat pump seawater desalination device with cascade preheating and its control method
  • A heat pump seawater desalination device with cascade preheating and its control method

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Embodiment Construction

[0040] The specific embodiment of the present invention will be described in detail below in conjunction with the accompanying drawings, but the present invention is not limited to this embodiment. In order to make the public have a thorough understanding of the present invention, specific details will be described in conjunction with the experimental device built.

[0041] Such as figure 1As shown, the present invention is a heat pump type seawater desalination device with cascade preheating, and relates to a cascade preheating, heat recovery and film evaporation technology of a seawater desalination device. High-efficiency desalination of seawater is achieved through recovery of waste heat, film evaporation and other technologies, including:

[0042] The hydrophobic cover plate 3 is used for the condensed water on the cover plate to flow smoothly into the evaporator side;

[0043] Axial flow fan 4, used to suck water vapor from the condenser side to the evaporator side for...

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Abstract

The invention discloses a heat pump type seawater desalination apparatus with step preheating, and a control method thereof. The apparatus comprises an evaporative condenser, a finned evaporator, a rolling rotor compressor, an axial flow fan, a primary preheater and a secondary preheater. The apparatus is mainly characterized in that step preheating of seawater is carried out by the primary preheater and the secondary preheater, and heat of freshwater and concentrated seawater is recovered to improve the initial temperature of seawater evaporation and the heat utilization rate of a system; and a sprayer and the evaporative condenser are arranged in a coupling manner, so membrane high-efficiency evaporation of seawater on the surface of the condenser is realized. The apparatus has the characteristics of simple structure, safety, reliability, low running cost, high heat utilization rate and good energy saving effect.

Description

【Technical field】 [0001] The invention belongs to the technical field of seawater desalination, and in particular relates to a heat pump type seawater desalination device with cascade preheating and a control method thereof. 【Background technique】 [0002] With the improvement of people's material living standards and the development of social economy, the demand for fresh water in production and life is increasing rapidly, and the fresh water resources that can directly supply human survival are extremely scarce. Therefore, it is of great significance to tap potential fresh water resources and transform them into Significance. The sea water covers a huge area of ​​the earth, and there are a lot of fresh water resources in the sea water. Therefore, the development of sea water desalination technology will reduce the threat of the shortage of fresh water resources on the earth to human survival to a certain extent. [0003] As a heat raising device, a heat pump can absorb a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/08C02F1/12C02F103/08
CPCC02F1/048C02F1/08C02F1/12C02F2103/08C02F2301/08Y02A20/124
Inventor 黄东冷永强张振亚
Owner 永春县产品质量检验所福建省香产品质量检验中心国家燃香类产品质量监督检验中心福建
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