Baffled multistage disc distiller enhanced by externally adding negative pressure

A still and baffled technology, applied in the field of brackish water distillation and desalination, can solve the problems of difficult utilization of condensation heat, low mass transfer and heat transfer efficiency, large energy loss, etc., so as to reduce water production cost and energy consumption. , cost saving effect

Inactive Publication Date: 2011-10-12
刘若鹏
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional disc solar still is a passive distillation and desalination device, which is simple in design, convenient in obtaining materials, and extremely low in operating costs. However, the water production per unit lighting area is low, so a large construction area is required; The energy consumption loss is relatively large; only relying on the natural convection in the distiller for heat exchange, the efficiency of mass transfer and heat transfer is low

Method used

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  • Baffled multistage disc distiller enhanced by externally adding negative pressure
  • Baffled multistage disc distiller enhanced by externally adding negative pressure

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0012] Example 1: Water production test of the two-stage stacked disc system at different temperatures.

[0013] Only the bottom stack of distillation trays is assembled to form a two-stage distillation, and the water temperature of the chassis is heated to 45°C, 50°C, 55°C, 60°C, and 65°C (salt content is 10g / L) in order to test the dynamic water production rate. The experimental suction pressure is 0.06Mpa. It is measured that the water production rate can reach 352L / d, and the average conductivity of the effluent water is 73μs / cm.

example 2

[0014] Example 2: Water production test of three-stage stacked disc system at different temperatures.

[0015] A two-layer stacked tray is installed at the bottom, and the water temperature of the chassis is heated to 45°C, 50°C, 55°C, 60°C, and 65°C (salt content is 10g / L) in sequence in the form of three-stage distillation to test the dynamic water production rate. The pumping pressure in the experiment is 0.06Mpa. It is measured above 60°C and runs for 20 hours a day. The water production rate can reach 476L / d, and the conductivity of the effluent water is 79μs / cm.

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Abstract

The invention provides a baffled multistage disc distiller enhanced by externally adding a negative pressure. Bitter in a disc is heated by utilizing a heating pipe at the bottom; one side of the distiller is provided with a steam lifting flow channel, and a large amount of steam is evaporated below a boiling point through negative pressure suction of a vacuum pump; after pumping, condensation is carried out so as to obtain fresh water, thereby achieving the effect of salt-water separation. The distiller can also be externally connected with a solar heat collector for heat supply, thereby greatly saving energy consumption.

Description

Technical field: [0001] The invention relates to a technology for distillation and desalination of brackish water, belonging to the technical field of water treatment equipment. Background technique: [0002] At present, there are many methods for desalination of brackish water, but conventional membrane methods such as electrodialysis and reverse osmosis require strict pretreatment processes, frequent membrane cleaning and replacement, and high fuel and power consumption, making the cost expensive. The traditional stacked-disc distillation method has been valued by people again because of its simple structure and good water quality. It can be used in conjunction with solar collectors, which can greatly save energy, reduce investment and operating costs, and has broad application prospects. . [0003] The traditional disc solar still is a passive distillation and desalination device, which is simple in design, convenient in obtaining materials, and extremely low in operatin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/04C02F1/14C02F103/08
CPCY02A20/212
Inventor 居玉坤刘若鹏王振兴
Owner 刘若鹏
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