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A kind of preparation method of environment-friendly and durable fully synthetic heat transfer fluid

A heat transfer fluid, durable technology, applied in the chemical industry, can solve the problems of stopped flow, easy carbon deposition in equipment, initial condensation, etc., and achieve the effect of good thermal stability

Active Publication Date: 2019-11-29
SHANDONG YUANGEN PETROLEUM CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The present invention proposes a new type of environmentally friendly and durable fully synthetic heat transfer fluid preparation method for the problems of easy carbon deposits in equipment existing in the traditional heat transfer oil synthesis process, leading to accidents such as initial setting and flow stop

Method used

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  • A kind of preparation method of environment-friendly and durable fully synthetic heat transfer fluid

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Embodiment 1

[0032] Embodiment 1. This embodiment provides an environmentally friendly and durable fully synthetic heat transfer fluid and a preparation method thereof. The heat transfer fluid includes the following substances in terms of weight fractions: Base oil: 90 parts of (3-alkyl-1-methyl-imidazole) hexafluorophosphate, 0.5 parts of high-temperature antioxidant, 0.1 part of pour point depressant, composite coke inhibitor 0.01 part, antirust agent 0.1 part.

[0033] Among them, the preparation steps of (3-alkyl-1-methyl-imidazole) hexafluorophosphate are as follows: add equimolar N-methylimidazole and chlorinated alkanes into a 500mL standard reflux device, and install a Sheng You CaCl 2 The drying tube was connected to the atmosphere, refluxed for 48 hours, and the reflux temperature was 75°C. After the reaction, the flask containing the white product was cooled in a desiccator and left overnight. There was a large amount of white product in the flask and a small amount of light ye...

Embodiment 2

[0034] Embodiment 2. This embodiment provides an environmentally friendly and durable fully synthetic heat transfer fluid and a preparation method thereof. The heat transfer fluid includes the following substances in terms of weight fraction: Base oil: 99 parts of (3-alkyl-1-methyl-imidazole) hexafluorophosphate, 1 part of high-temperature antioxidant, 0.2 part of pour point depressant, composite coke inhibitor 0.1 part, antirust agent 1 part.

[0035] Among them, the preparation steps of (3-alkyl-1-methyl-imidazole) hexafluorophosphate are as follows: add equimolar N-methylimidazole and chlorinated alkanes into a 500mL standard reflux device, and install a Sheng You CaCl 2 The drying tube was connected to the atmosphere, refluxed for 45 hours, and the reflux temperature was 71°C. After the reaction, the flask containing the white product was cooled in a desiccator, and left for 12 hours. There was a large amount of white product in the flask, and a small amount of light yellow...

Embodiment 3

[0036] Embodiment 3, this embodiment provides an environmentally friendly and durable fully synthetic heat transfer fluid and a preparation method thereof. The heat transfer fluid includes the following substances in terms of weight fractions: base oil: 92 parts of (3-alkyl-1-methyl-imidazole) hexafluorophosphate, 0.6 parts of high-temperature antioxidant, 0.15 parts of pour point depressant, composite coke inhibitor 0.18 parts, antirust agent 0.8 parts.

[0037] Among them, the preparation steps of (3-alkyl-1-methyl-imidazole) hexafluorophosphate are as follows: add equimolar N-methylimidazole and chlorinated alkanes into a 500mL standard reflux device, and install a Sheng You CaCl 2 The drying tube was connected to the atmosphere, refluxed for 46 hours, and the reflux temperature was 73°C. After the reaction, the flask containing the white product was cooled in a desiccator, and left for 11 hours. There was a large amount of white product in the flask, and a small amount of...

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Abstract

The invention belongs to the field of chemical engineering, and relates to a preparation method of an environmentally-friendly and durable totally-synthesized thermal conduction liquid. The method comprises a step of base oil synthesis and a step of base oil and assistant mixing, and the base oil is (3-alkyl-1-methyl-imidazolium)hexafluorophosphate. The thermal conduction liquid synthesized through the method has the characteristics of good thermal stability, good thermal conductivity, and realization of recycling. The quality of the above product is in a leading international level, and the product can provide a high-quality green and environmentally-friendly long-life thermal conduction liquid for production of domestic thermal conduction oil, and greatly promotes the thermal conduction industry to develop toward the environment compatibility and renewability.

Description

technical field [0001] The invention belongs to the field of chemical industry and relates to a method for preparing a thermally conductive liquid, in particular to a method for preparing an environmentally friendly and durable fully synthetic thermally conductive liquid. Background technique [0002] The research and application of heat transfer oil began around the 1930s. In 1929, the Dow Chemical Company of the United States produced a mixture of diphenyl ether and biphenyl for the first time. Its trade name was Dowtherm A. After that, it applied for a patent and applied it to the heating system, creating a precedent for the production of heat conduction. Development opens up new avenues. Since then, the superiority of heat transfer oil as a new heat transfer medium has been gradually recognized by people. In the European and American markets, some products similar to Dowtherm A components have been developed successively, such as Diphyl series products of German Bayer ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K5/10
CPCC09K5/10
Inventor 何茂伟袁俊洲徐金玲乔良
Owner SHANDONG YUANGEN PETROLEUM CHEM
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