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Full phase change distillation seawater desalination device

A technology of seawater and phase change, which is applied in seawater treatment, general water supply saving, heating water/sewage treatment, etc., and can solve problems such as large corrosion of tube bundles, low desalination efficiency, and large power consumption

Active Publication Date: 2016-03-30
贺州市八步区市场监督管理局
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Problems solved by technology

[0002] The Chinese invention patent No. 2010105465098 and the patent application No. 201110350959.4 disclose the technical scheme, which can recover the heat released during the liquefaction of seawater vapor. Since the seawater desalination process is non-complete phase change heat transfer, the power consumption is relatively large, and the desalination efficiency is relatively large. Relatively low, tube bundle corrosion is relatively large

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  • Full phase change distillation seawater desalination device
  • Full phase change distillation seawater desalination device

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Embodiment Construction

[0012] Such as figure 1 The schematic diagram of the main structure of the vertical double tank of the full phase change distillation seawater desalination device is shown. Including seawater evaporator (1), seawater vapor condenser (2), tube bundle (5), tube bundle (6), heat recovery pump (7), seawater pump (3), seawater pump (4), vacuum pump (8) , concentrated seawater valve (26), fresh water valve (30). The seawater pump (3) sprays heated seawater to the outer surface of each tube on the upper part of the tube bundle (5) in the seawater evaporator (1) through the nozzle (36), and the steam enters the tube bundle ( 6) The outer surface condenses into fresh water, which is discharged through the fresh water valve (30). Unevaporated concentrated seawater is discharged through the concentrated seawater valve (26). The tube bundle (5) in the seawater evaporator (1), the heat recovery pump (7), and the tube bundle (6) in the seawater steam condenser (2) are sealed to form a cl...

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Abstract

The invention discloses a normal-temperature distillation seawater desalination device. The device comprises a seawater evaporator (1), a seawater steam condenser (2), seawater pumps (3) (4), a back heating water pump (7), a vacuum pump (8), a tube bank (5), a tube bank(6), a dense seawater valve (26) and a fresh water valve (30). The seawater desalination device is a double-tank vertical structure. The seawater evaporator (1) and the seawater steam condenser (2) are communicated through a steam pipe. The seawater desalination device is characterized in that the tube bank (5) in the seawater evaporator, the tube bank (6) in the seawater steam condenser and the back heating water pump (7) form an enclosed system through a steam pipe and a water pipe; back heating liquid carries out phase change heat transmission on the inner surface of the tube bank of the system, and seawater also carries out phase change heat transmission on the outer surface of the tube bank of the system in the tank; because all phase change heat transmission is carried out, the heat resistance is small and the heat conductivity is high, the seawater desalination device can recycle seawater evaporation heat, electric energy loss is small, the fresh water generation ratio is 20-50, seawater only contacts the outer surface of the tube bank (5) in the seawater evaporator, and corrosivity is lowered.

Description

technical field [0001] The invention relates to a seawater desalination device, in particular to a desalination device for seawater or saline-alkali water by means of distillation. Background technique [0002] The Chinese invention patent No. 2010105465098 and the patent application No. 201110350959.4 disclose the technical scheme, which can recover the heat released during the liquefaction of seawater vapor. Since the seawater desalination process is non-complete phase change heat transfer, the power consumption is relatively large, and the desalination efficiency is relatively large. Relatively low, tube bundle corrosion is relatively large. Contents of the invention [0003] The present invention improves the technical solution of the patent application number 20111350959.4, and its purpose is to overcome the shortcomings of the prior art and provide a seawater desalination device with less heat and electric energy consumption, high water production efficiency and rela...

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Application Information

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IPC IPC(8): C02F1/04C02F103/08
CPCY02A20/124
Inventor 张世严张晓康张玲张柏鑫方艺涵
Owner 贺州市八步区市场监督管理局
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