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Flame-retardant type refrigerant and preparation method thereof

A refrigerant and flame-retardant technology, which is applied in the field of flame-retardant refrigerant and its preparation, can solve the problems of poor compatibility, uneven dispersion, and poor flame-retardant effect of tetrafluoropropene, and achieve good flame-retardant effect and simplified The effect of preparation process and wide dissolution range

Active Publication Date: 2015-05-06
JUHUA GROUP TECH CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Existing methods all use the addition of flame retardants or non-flammable components to improve flame retardancy, because the compatibility between flame retardants and HFO1234yf tetrafluoropropene is poor, and the dispersion is uneven, resulting in poor flame retardant effect, and its preparation is Compared with HFO1234yf simple refrigerant products, the refrigerant products have a higher GWP, and still have a greater impact on the environment

Method used

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  • Flame-retardant type refrigerant and preparation method thereof
  • Flame-retardant type refrigerant and preparation method thereof
  • Flame-retardant type refrigerant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A kind of flame-retardant refrigerant, according to each 1Kg, the feeding formula is as follows:

[0029]

[0030]

[0031] Its preparation method is as follows:

[0032] Step (1) preparation of ionic liquid flame retardant

[0033] According to the proportion, add 27.16 parts of 3-bromo-3,3-difluoropropene (BFO) and 0.84 parts of 1-allyl-3-methylimidazolium chloride ionic liquid (AMIMCI) into the 200L reactor, in the liquid phase In the state of mixing for 15 hours, the ionic liquid flame retardant was obtained.

[0034] Step (2) mixing

[0035] According to the ratio, the ionic liquid flame retardant prepared in step (1) is mixed with 70 parts of 2,3,3,3-tetrafluoropropene (HFO1234yf), 2 parts of 1,1,2,2-tetrafluoroethyl-2 , 2,2-trifluoroethyl ether (HFE-347, molecular formula CF 3 CH 2 OCF 2 CF 2 H) Add it into a 200L turbulent circulation tank, and mix it in a liquid state for 30 hours with turbulent circulation to obtain the product. The number is WN-...

Embodiment 2

[0037] A kind of flame-retardant refrigerant, according to each 1Kg, the feeding formula is as follows:

[0038]

[0039] Its preparation method is as follows:

[0040] Step (1) preparation of ionic liquid flame retardant

[0041] According to the proportion, add 28.5 parts of 3-bromo-3,3-difluoropropene (BFO) and 1.5 parts of 1-butyl-3-methylimidazolium chloride ionic liquid (BMIMCI) into the 200L reactor, in the liquid state Down mixing for 20 hours to obtain an ionic liquid flame retardant.

[0042] Step (2) mixing

[0043] According to the ratio, the ionic liquid flame retardant prepared in step (1) is mixed with 60 parts of 2,3,3,3-tetrafluoropropene (HFO1234yf), 10 parts of 1,1,2,2-tetrafluoroethyl-2 , 2,2-trifluoroethyl ether (HFE-347, molecular formula CF 3 CH 2 OCF 2 CF 2 H) Add it into a 200L turbulent flow circulation tank, and mix it in a turbulent flow circulation for 40 hours in a liquid state to obtain the product. The number is WN-2.

Embodiment 3

[0045] A kind of flame-retardant refrigerant, according to each 1Kg, the feeding formula is as follows:

[0046]

[0047] Its preparation method is as follows:

[0048] Step (1) preparation of ionic liquid flame retardant

[0049] According to the ratio, add 14.85 parts of 3-bromo-3,3-difluoropropene (BFO) and 0.15 parts of 1-ethyl-3-methylimidazole chloride (EMIMCI) into a 200L reactor, and mix them in the liquid phase 10h, the ionic liquid flame retardant was obtained.

[0050] Step (2) mixing in the turbulent circulation reactor

[0051] According to the ratio, the ionic liquid flame retardant prepared in step (1) is mixed with 80 parts of 2,3,3,3-tetrafluoropropene (HFO1234yf), 1 part of 1,1,2,2-tetrafluoroethyl-2 , 2,2-trifluoroethyl ether (HFE-347, molecular formula CF 3 CH 2 OCF 2 CF 2 H) Adding to a 200L turbulent circulation kettle, and mixing in turbulent circulation for 20 hours in a liquid phase state to obtain the product. The number is WN-3.

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Abstract

The invention discloses a flame-retardant type refrigerant which comprises the following components in parts by weight: 14.85-28.5 parts of 3-bromo-3,3-difluoropropylene, 0.15-1.8 parts of ionic liquid, 60-80 parts of 2,3,3,3-tetrafluoropropylene and 1-10 parts of 1,1,2,2-tetrafluoroethyl-2,2,2-trifluoroethyl ether. The invention also discloses a method for preparing the refrigerant. The process disclosed by the invention is simple and low in cost, and the prepared refrigerant product has good flame-retardant property and low GWP.

Description

technical field [0001] The invention relates to the field of refrigerants, in particular to a flame-retardant refrigerant and a preparation method thereof. Background technique [0002] As a single working fluid refrigerant, HFO-1234yf has excellent environmental parameters, its global warming potential GWP=4, ozone depletion potential ODP=0, life cycle climate performance (LCCP) is lower than HFC-134a, atmospheric decomposition and HFC-134a is the same. And its system performance is better than HFC-134a. If HFO-1234yf is used to replace HFC-134a refrigerant, automobile manufacturers can continue to use the original mobile air-conditioning (Mobile Air-Conditioning, MAC) system. Therefore, HFO-1234yf is considered to be a potential substitute for a new generation of automotive refrigerants. It has been accepted by automakers in Western Europe and will be gradually promoted in 2011. The GWP and atmospheric life of HFO-1234yf have obvious environmental advantages compared wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/04
CPCC09K5/044C09K2205/112C09K2205/126C09K2205/132
Inventor 王金明吴四清
Owner JUHUA GROUP TECH CENT
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