Environment-friendly anhydrous cooling liquid as well as preparation method and application thereof

An environment-friendly, water-cooled technology, which is applied in the field of coolant, can solve the problems of limited service life and easy formation of scale in the coolant after long-term use, so as to achieve the effect of prolonging service life, good protection, and ensuring long-term use

Active Publication Date: 2021-10-29
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the coolant also has the function of heating natural gas, so that the natural gas can be converted from liquid to gaseous fuel to supply the engine, which has more stringent requirements on the coolant. Traditional coolant is easy to form scale after long-term use, and The service life is limited, therefore, there is an urgent need to develop a new cooling liquid with outstanding cooling effect, extended service life, good anti-corrosion, thermal stability, anti-foaming and anti-scaling properties and its preparation method

Method used

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  • Environment-friendly anhydrous cooling liquid as well as preparation method and application thereof
  • Environment-friendly anhydrous cooling liquid as well as preparation method and application thereof
  • Environment-friendly anhydrous cooling liquid as well as preparation method and application thereof

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[0028] The second aspect of the present disclosure provides the method for preparing the anhydrous cooling liquid described in the first aspect, wherein the method includes the following steps: mixing the metal corrosion inhibitor, fluorinated liquid, dispersant and antifreeze according to the proportion, Stir once; add the acid-base regulator and stir twice; add the defoamer and stir three times.

[0029] According to the present disclosure, the conditions for the primary stirring include: the stirring temperature is 58-60°C, and the stirring time is 30-45min; the conditions for the secondary stirring include: the stirring temperature is 58-60°C, and the stirring time is 30 minutes. -40 min; the conditions for the three stirrings include: the stirring temperature is 58-60° C., and the stirring time is 10-20 min.

[0030] The third aspect of the present disclosure provides the application of the water-free coolant in the first aspect in a heavy-duty LNG engine.

[0031] The e...

Embodiment 1

[0040] The present embodiment prepares a kind of environmentally friendly coolant (total mass 100kg) according to the following method:

[0041]1 weight part of metal corrosion inhibitor (0.4 weight part of 2-hexyl-1-(ethoxypropionic acid)-imidazoline, 0.2 weight part of 2,4-dihydroxybenzoic acid, 0.4 weight part of petroleum sulfonic acid acid sodium), 0.3 parts by weight of fluorinated liquid (0.5 parts by weight of 3M Novec HFE-7100), 0.3 parts by weight of dispersant (0.15 parts by weight of aminotrimethylene phosphonic acid and 0.15 parts by weight of hydroxyethylene di Phosphonic acid (tetra) sodium), 90 parts by weight of antifreeze (propylene glycol of 45 parts by weight and ethylene glycol of 45 parts by weight) were uniformly mixed, stirred at 60°C for 35min, and the stirring frequency was 600rpm; adding 0.26 parts by weight of acid Alkali conditioner (sodium hydroxide), stirring for 30 minutes, stirring frequency is 600 rpm; then add 0.01 weight part of antifoaming ...

Embodiment 2

[0043] The present embodiment prepares a kind of environmentally friendly coolant (total mass 100kg) according to the following method:

[0044] 6 parts by weight of metal corrosion inhibitor (2-hexyl-1-(ethoxypropionic acid)-imidazoline of 2 parts by weight, 2,4-dihydroxybenzoic acid of 1.8 parts by weight and petroleum sulfonic acid of 2.2 parts by weight Sodium acid), 1 part by weight of fluorinated liquid (3M Novec HFE-7100), 2 parts by weight of dispersant (1 part by weight of aminotrimethylene phosphonic acid and 1 part by weight of hydroxyethylene diphosphonic acid (tetrafluoroethylene diphosphonic acid) ) sodium), 100 parts by weight of antifreeze (propylene glycol of 45 parts by weight and ethylene glycol of 55 parts by weight) are uniformly mixed, stirred at 60° C. for 35 min, and the stirring frequency is 600 rpm; adding 0.9 parts by weight of an acid-base regulator ( sodium hydroxide), stirred for 30 min, and the stirring frequency was 600 rpm; then 4 parts by weig...

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Abstract

The invention relates to an environment-friendly anhydrous cooling liquid and a preparation method thereof. The anhydrous cooling liquid comprises the following components in parts by weight: 1-6 parts of a metal corrosion inhibitor, 0.3-1 part of a fluorinated liquid, 0.3-2 parts of a dispersing agent, 0.01-4 parts of a defoaming agent, 0.26-0.9 part of an acid-base regulator and 90-140 parts of an anti-freezing agent. The environment-friendly engine anhydrous cooling liquid prepared by the invention has excellent corrosion resistance and heat-conducting property, and is suitable for long-term use at a relatively high temperature.

Description

technical field [0001] The present disclosure relates to the technical field of cooling liquid, in particular, to an environment-friendly anhydrous cooling liquid and its preparation method and application. Background technique [0002] In order to reduce the emission of harmful gases in vehicle exhaust and achieve the goal of low carbonization, more and more vehicles use green energy instead of ordinary fossil fuels, and liquefied natural gas (LNG) is one of them. LNG engines have been more and more applied to heavy-duty engineering vehicles. They are generally open-air operations, the working conditions are harsh, and they are often overloaded, which requires the engine to maintain normal operation for a long time. Coolant is a liquid that ensures the normal operation of the engine and is an indispensable heat dissipation medium for the engine cooling system. The LNG engine will generate a lot of heat during the combustion process. If this part of the heat is not taken aw...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/20
CPCC09K5/20
Inventor 刘小楠杨兵樊秀菊
Owner CHINA PETROLEUM & CHEM CORP
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