Natural vacuum low temperature distillation sea water desalination method and device

A vacuum low-temperature, natural technology, applied in seawater treatment, general water supply saving, heating water/sewage treatment, etc., can solve the problem of high cost per ton of fresh water, achieve the effect of energy saving, power saving, cost reduction, and no power consumption.

Inactive Publication Date: 2008-05-14
UNIV OF SHANGHAI FOR SCI & TECH
View PDF0 Cites 43 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the use of all natural energy is realized, the pumping system is powered by a

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Natural vacuum low temperature distillation sea water desalination method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] The present invention will be further described below in conjunction with drawings and embodiments.

[0021] The natural vacuum low-temperature distillation seawater desalination device is shown in Figure 1. It includes: a solar thermal collector 1 for collecting solar energy; an evaporation coil 16 that uses the high-temperature heat transfer medium from the solar thermal collector to heat seawater and evaporate it; a condensing coil 16 that condenses the steam from the evaporation chamber 4 into fresh water A seawater supply tank 12 for loading seawater; a thick seawater tank 9 for loading concentrated seawater discharged after desalination; a freshwater tank 8 for collecting fresh water from the condenser 5; a freshwater tank 8 for recycling Part of the heat of the concentrated seawater discharged from the evaporation chamber 4 is used to heat the casing regenerator 15 of the feed water before entering the evaporation chamber 4; a shower 2 for distributing the heated...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a seawater desalination method and device of natural vacuum and low temperature distillation, which is characterized in that the system must be airtight before operation, the water injection valve on the system top is switched on to fill up the system with seawater; the drain valves of all drainage pipes connected with the evaporation chamber are switched on, then the seawater is flowed out under the influence of the gravity; the air in the system is discharged to make the system vacuum; the heat source can be conveyed to the evaporation chamber now; when the temperature of heat source is higher than the condensation temperature, the evaporation pressure of the heated seawater is higher than the condensation temperature of fresh water, the evaporated vapor is condensed by the condenser under the action of pressure difference between the evaporation pressure and the condensing pressure and finally the desalinated water can be obtained. The invention has the advantages that a sleeve regenerator is arranged on the connection section of the water supply pipe of seawater and the evaporation chamber, the heat of the strong brine discharged by the evaporator is partially adopted to preheat the seawater in the evaporator, the liquid in the system can flow freely due to the pressure difference, thus the method can economize energy source and the device can be used to desalinate the seawater on any sea island, water-deficient area or brackish water area.

Description

technical field [0001] The present invention relates to a low-temperature distillation seawater desalination method and device used in the field of seawater desalination, in particular to the use of low-temperature heat sources such as solar energy for heating, and the use of water gravity and atmospheric pressure to generate vacuum and pressure difference naturally without any pumps. Distillation seawater desalination unit. Background technique [0002] Seawater desalination has played an important role in the economic and social development of some coastal water-scarce countries and regions. For example, 70% of Israel’s drinking water comes from desalinated seawater, and the daily desalinated water production in 2005 reached 738,000 cubic meters; the UAE’s drinking water mainly relies on seawater desalination, and the daily desalinated water production in 2003 reached 5.466 million cubic meters; Sicily, Italy , In 2005, the daily output of desalinated water was 135,000 cu...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C02F1/04C02F103/08
CPCY02A20/124
Inventor 刘业凤张华武卫东赵奎文
Owner UNIV OF SHANGHAI FOR SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap