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Method for increasing salt field solarizing and evaporating rate by hydrophilic modified spheres

A technology of hydrophilic modification and evaporation rate, which is applied in the field of solar evaporation in salt fields, can solve problems such as the impact of salt production and quality, slow down the progress of salt production, and reduce evaporation rate, so as to alleviate production reduction, increase production, and reduce land use area effect

Inactive Publication Date: 2019-02-05
TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because it is difficult to control the open-air operation, many salt-making processes are plagued by many problems
Insufficient sunlight, weak radiation intensity, and low air humidity and other climatic conditions will greatly slow down the progress of salt production, and the evaporation rate will be greatly reduced. The slowdown of the evaporation cycle means that the brine residence time will increase. The amount will increase, and the yield and quality of salt will be affected

Method used

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  • Method for increasing salt field solarizing and evaporating rate by hydrophilic modified spheres

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] (1) Take the polypropylene hydrophilic modified pellets with a particle size of 3mm, wash them with distilled water, put them in a 60°C oven and dry them for 6 hours before taking them out;

[0016] (2) The pellets are dropped into an evaporation pond equipped with enough 4wt% sodium chloride solution, wherein the area of ​​the evaporation pond is 400cm 2 (20*20cm), make the small ball account for 50% of the area of ​​the evaporation pool through the partition, and let the small ball naturally disperse and float on the surface of the solution after withdrawing the partition;

[0017] (3) Use a fan to simulate natural wind energy, and adjust the wind speed to 1m / s; use a sun lamp to simulate solar energy, adjust the irradiation distance and irradiation intensity, so that the surface irradiation temperature of the solution is 30°C, and simulate the solar evaporation experiment in salt fields;

[0018] (4) The evaporation rate was calculated after the experiment continued ...

Embodiment 2

[0021] (1) Take the polypropylene hydrophilic modified pellets with a particle size of 3mm, wash them with distilled water, put them in a 60°C oven and dry them for 6 hours before taking them out;

[0022] (2) The pellet is dropped into an evaporation pond equipped with enough 10wt% sodium chloride solution, wherein the area of ​​the evaporation pond is 400cm 2 (20*20cm), make the small ball account for 30% of the area of ​​the evaporation pool through the partition, and let the small ball naturally disperse and float on the surface of the solution after withdrawing the partition;

[0023] (3) Use a fan to simulate natural wind energy, and adjust the wind speed to 4m / s; use a sun lamp to simulate solar energy, adjust the irradiation distance and irradiation intensity, so that the surface irradiation temperature of the solution is 30°C, and simulate the solar evaporation experiment in salt fields;

[0024] (4) The evaporation rate was calculated after the experiment continued f...

Embodiment 3

[0027] (1) Take the polyethersulfone hydrophilic modified pellets with a particle size of 4mm, wash them with distilled water, put them in an oven at 60°C and dry them for 6 hours before taking them out;

[0028] (2) The pellets are dropped into an evaporation pond equipped with enough 3.5wt% sodium chloride solution, wherein the area of ​​the evaporation pond is 400cm 2 (20*20cm), make the small ball account for 50% of the area of ​​the evaporation pool through the partition, and let the small ball naturally disperse and float on the surface of the solution after withdrawing the partition;

[0029] (3) Use a fan to simulate natural wind energy, and adjust the wind speed to 10m / s; use a sun lamp to simulate solar energy, adjust the irradiation distance and irradiation intensity, so that the solution surface irradiation temperature is 50°C, and simulate the salt field solar evaporation experiment;

[0030] (4) The evaporation rate was calculated after the experiment continued f...

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Abstract

The invention discloses a method for increasing a salt field solarizing and evaporating rate by hydrophilic modified spheres. The method is characterized in that polymer spheres with different particle diameters are added into an evaporating tank filled with sodium chloride solutions of different concentrations, so that the spheres have different area proportions on solution evaporating surfaces;a salt field solarizing and evaporating test is stimulated by regulating air speed of a fan and an irradiation temperature of a solar lamp, and the evaporating rate is calculated through a formula. According to the results, under different conditions, the solution evaporating rate is greatly increased. By applying the method to salt field solarizing and evaporating, the salt field evaporating andvaporizing surface area can be effectively increased, and therefore, the evaporating rate can be increased, the site area for the salt field is reduced, the production period is shortened, the yield is increased, and has very important practical guiding significance.

Description

technical field [0001] The invention belongs to the technical field of solar evaporation in salt fields, and in particular relates to a method for improving the solar evaporation rate of salt fields by using hydrophilic modified pellets. Background technique [0002] At present, land prices in my country's coastal areas are very expensive, and commercial land and residential land continue to compress the space of traditional industrial land. Therefore, for the solar salt production industry in coastal areas, only efforts to increase the land use rate and added value of salt pans can effectively alleviate the shortage of land for seawater solar evaporation salt production. Compared with other salt-making methods, sun-dried salt is relatively simple, and it belongs to a large-scale operating system, mainly relying on the external environment for production. Evaporation and crystallization are two important steps in the solar salt production process, and the evaporation proces...

Claims

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Application Information

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IPC IPC(8): C01D3/06
CPCC01D3/06Y02P20/133
Inventor 唐娜华欣欣项军张蕾程鹏高杜威
Owner TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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