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Supergravity seawater desalting method based on hot method

A super-gravity, thermal technology, applied in seawater treatment, heating water/sewage treatment, general water supply saving, etc., can solve the problems of high investment, low production capacity, high energy consumption, etc.

Active Publication Date: 2014-05-07
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a thermal high-gravity seawater desalination method to solve many practical problems such as high investment, high energy consumption and low production capacity in the existing thermal distillation technology

Method used

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  • Supergravity seawater desalting method based on hot method
  • Supergravity seawater desalting method based on hot method
  • Supergravity seawater desalting method based on hot method

Examples

Experimental program
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Effect test

Embodiment 1

[0076] A medium-sized thermal high-gravity seawater desalination machine for large ships, its internal basic structure can refer to figure 1 As shown, the sealing method is dynamic sealing, the heating method is high-temperature steam heating, the material of the heat exchange tube in the heat exchange chamber inside the rotating bed is aluminum alloy, the number of turns of the heat exchange tube is 20, and the length of the heat exchange tube is 1 meter. The inner diameter of the heat pipe is 20 mm, and the diameter of the smallest tube circle surrounded by the heat exchange tube is 30 cm. The material of the steam collection pipe, the exhaust gas discharge pipe and the fresh water distribution pipe and the wire mesh filler are all made of polymer plastics that are not toxic to the human body. The volume ratio between the fresh water chamber and the steam collection chamber is 3 / 10, the volume ratio between the heat exchange chamber 11 and the waste gas separation chamber 17 ...

Embodiment 2

[0079] A small thermal high-gravity seawater desalination machine for small fishing boats, its internal basic structure can be referred to Figure 8 As shown, the sealing method is static sealing, the heating method is electromagnetic heating, the material of the heat exchange tube in the heat exchange chamber inside the rotating bed is aluminum alloy, the number of turns of the heat exchange tube is 5 to 10 turns, and the length of the heat exchange tube is 0.2 meters. The inner diameter of the heat exchange tube is 8 mm, and the diameter of the smallest pipe circle surrounded by the heat exchange tube is 5 cm. The material of the steam collection pipe, exhaust gas discharge pipe and fresh water distribution pipe and the wire mesh filler are all made of polymers that are not toxic to the human body. Made of plastic, the volume ratio between the fresh water chamber and the steam collection chamber is 1 / 10, the volume ratio between the heat exchange chamber 11 and the waste gas ...

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Abstract

The invention provides a supergravity seawater desalting method based on a hot method. The supergravity seawater desalting method comprises the following steps of: vacuumizing a supergravity seawater desalting device based on the hot method; making a rotating bed body rotate around a rotating axis, and keeping a heat exchange chamber, a steam collection chamber, a gas-liquid exchange chamber and a fresh water chamber of the rotating bed body in a supergravity stable state; under the action of a heating device, gradually heating cold seawater sprayed into the heat exchange chamber through outer walls of heat exchange pipes in the heat exchange chamber; collecting water steam; condensing the water steam; recycling fresh water; discharging waste gas; and repeatedly cycling the water steam collection step, the water steam condensation step, the fresh water recycling step and the waste gas discharging step for the steam produced by the seawater subjected to heat exchange in the condensation step, thus finally obtaining required fresh water. By the method, a large amount of high-purity fresh water can be quickly produced, and many actual problems of high investment, high energy consumption, low yield and the like of a conventional hot-method distillation technology are solved.

Description

technical field [0001] The invention relates to the technical field of seawater desalination, in particular to a thermal high-gravity seawater desalination method that realizes rapid heat and mass transfer between seawater and steam in a high-gravity field to obtain high-purity fresh water. Background technique [0002] As an open-source and incremental technology of water resources, seawater desalination has become an important way to solve the water resource crisis. By 2006, more than 120 countries and regions in the world had applied seawater desalination technology. The global daily output of seawater desalination was about 37.75 million tons, 80% of which was used for drinking water, solving the water supply problem of more than 100 million people. Currently commonly used seawater desalination processes include: reverse osmosis, solar energy, low temperature multi-effect, multi-stage flash evaporation, electrodialysis, pressure steam distillation, dew point evaporation,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/04C02F103/08
CPCY02A20/124
Inventor 王东光竺柏康陶亨聪
Owner ZHEJIANG OCEAN UNIV