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Method for preparing heterogeneous water evaporation inhibitor

An evaporation inhibitor, heterogeneous technology, applied in chemical instruments and methods, reagents, other chemical processes, etc., can solve problems such as hindering the popularization and application of water evaporation inhibitors, loss of water evaporation effect, unstable performance, etc., to reduce The effect of water loss, reduction of water loss and stable product performance

Inactive Publication Date: 2008-08-06
TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, research at home and abroad is only at the laboratory stage. In the actual environment, factors such as wind speed, temperature, and impurities interfere significantly with water evaporation inhibitors, which will lead to unstable performance and even lose the effect of inhibiting water evaporation.
Since these problems have not been reasonably resolved, the popularization and application of water evaporation inhibitors has been hindered.

Method used

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  • Method for preparing heterogeneous water evaporation inhibitor
  • Method for preparing heterogeneous water evaporation inhibitor
  • Method for preparing heterogeneous water evaporation inhibitor

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0016] Weigh 25 grams of petroleum ether (30-60° C.), add 3.6 grams of AEO-7 and 0.15 grams of AEO-2 compound emulsifiers, mix well, and use it as the oil phase. Weigh 25 grams of distilled water, and slowly drop the distilled water into the oil phase while stirring rapidly. After the dropwise addition, put the system into a numerically controlled ultrasonic cleaner to vibrate intermittently, each time for 30 seconds, and the interval between two vibrations is 10 seconds, and last for 10 minutes to obtain a stable W / O emulsion.

[0017] Take two identical porcelain plates with a surface area of ​​100cm 2 Left and right, inject 1000 grams of water respectively, add 30 microliters of emulsion to one porcelain plate, and not add to the other porcelain plate. After placing it at 30°C for 72 hours, weigh and calculate the water evaporation loss of the two porcelain plates, and use the formula Calculate the water evaporation inhibition rate of the system where the emulsion is sprea...

example 2

[0019] Weigh 0.625 g of n-butanol and fully dissolve it in 25 g of petroleum ether (30-60° C.), add 3.6 g of AEO-8 and 0.15 g of AEO-2 compound emulsifier, mix well, and use it as the oil phase. Weigh 25 grams of distilled water, and slowly drop the distilled water into the oil phase while stirring rapidly. After the dropwise addition, put the system into a numerically controlled ultrasonic cleaner to vibrate intermittently, each time for 30 seconds, and the interval between two vibrations is 10 seconds, and last for 10 minutes to obtain a stable W / O emulsion.

[0020] Take two identical porcelain plates with a surface area of ​​100cm 2 Left and right, inject 1000 grams of water respectively, add 30 microliters of emulsion to one porcelain plate, and not add to the other porcelain plate. After placing it at 30°C for 72 hours, weigh and calculate the water evaporation loss of the two porcelain plates, and use the formula Calculate the water evaporation inhibition rate of the s...

example 3

[0022] Weigh 1.25 g of cetyl alcohol and fully dissolve it in 25 g of petroleum ether (30-60° C.), add 3.6 g of AEO-9 and 0.15 g of AEO-2 compound emulsifier, mix well, and use it as the oil phase. Weigh 25 grams of distilled water, and slowly drop the distilled water into the oil phase while stirring rapidly. After the dropwise addition, put the system into a numerically controlled ultrasonic cleaner to vibrate intermittently, each time for 30 seconds, and the interval between two vibrations is 10 seconds, and last for 10 minutes to obtain a stable W / O emulsion.

[0023] Take two identical porcelain plates with a surface area of ​​100cm 2 Left and right, inject 1000 grams of water respectively, add 30 microliters of emulsion to one porcelain plate, and not add to the other porcelain plate. After placing it at 30°C for 72 hours, weigh and calculate the water evaporation loss of the two porcelain plates, and use the formula Calculate the water evaporation inhibition rate of th...

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Abstract

The invention prepares a heterogeneous water evaporation inhibitor through adopting the emulsification technology. The technical characteristics are that using petroleum ether as oil phase solvent, using fatty alcohol polyoxyethylene ether series as emulsifying agent, remixing long-chain fatty alcohol and short-chain alcohol as molecular film base material, preparing stable W / O elusion through adopting supersonic dispersion, thereby obtaining water evaporation inhibitor. The water evaporation inhibitor which is obtained through the process can automatically spread out on the water level to form an insoluble molecular film, which has favorable temperature interference resistance ability, matter interference resistance and self-restoring ability, and the efficiency of inhibiting water evaporation is reduced as time prolongs, thereby having excellent stability. The preparation process of the invention is simple, and has small requirement for devices. And the product which is prepared has extensive application prospect in water resource protection field, has great significance for solving the problem of water scarcity in arid area and reducing water resource loss, and can bring out enormous economic benefits and social benefits.

Description

technical field [0001] The invention relates to the field of water resource protection, and more specifically relates to a method for preparing a heterogeneous liquid film that inhibits water evaporation in a large area of ​​water by using an emulsification method. Background technique [0002] Water is one of the important resources that human beings rely on for survival and development. In the current global resource crisis, drought and water shortage are at stake. my country is one of the few countries in the world that is seriously short of water. The per capita water volume is only 1 / 4 of the world's average level, and it is one of the countries with the poorest water resources in the world. At the same time, there is a huge difference in the possession rate of water resources between the north and the south in my country, and the arid and semi-arid areas account for more than half of the total land area of ​​the country. In arid and water-scarce areas, the evaporation...

Claims

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Application Information

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IPC IPC(8): C09K3/00B01J19/16
CPCY02P20/141
Inventor 吴燕衣守志夏萍
Owner TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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