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Novel environment-friendly refrigeration agent composition for replacing monochlorodifluoromethane

A technology of difluorochloromethane and refrigerant, which is applied in the direction of heat exchange materials, chemical instruments and methods, etc. It can solve the problems of reducing cooling effect, low global warming index of refrigerant, and modifying the system, so as to achieve good energy saving effect , the effect of improving thermal efficiency

Inactive Publication Date: 2011-07-06
濮阳市中炜精细化工有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0026] The global warming index of the refrigerant in this type of invention patent is relatively low, but the temperature difference (GTD) is 5-7 degrees, and the evaporator freezes, which greatly reduces the cooling effect
And to provide a similar volume (Volumetric capacity, VC), but because it is a non-azeotropic refrigerant, it is necessary to replace the compressor or greatly modify the original condenser or evaporator, not to mention that it is difficult to obtain similar performance to the original refrigerant coefficients, so there is the problem of inevitably modifying the system

Method used

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  • Novel environment-friendly refrigeration agent composition for replacing monochlorodifluoromethane
  • Novel environment-friendly refrigeration agent composition for replacing monochlorodifluoromethane
  • Novel environment-friendly refrigeration agent composition for replacing monochlorodifluoromethane

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Effect test

Embodiment 1

[0062] This embodiment is the first best condition:

[0063] After mixing 95 kg of propane (R-290) and 4.9 kg of propylene (R-1270), in order to make a near-azeotropic mixed refrigerant composition, 0.1 kg of hexamethyl silicone oil was added as an additive to prepare a refrigerant composition.

Embodiment 2

[0065] Present embodiment is the 2nd best condition:

[0066] After mixing 75 kg of propane (R-290) and 24.9 kg of propylene (R-1270), in order to make a near-azeotropic mixed refrigerant composition, 0.1 kg of hexamethyl silicone oil was added as an additive to prepare a refrigerant composition.

experiment example 1

[0067] Experimental example 1 (theoretical and actual temperature ramp test)

[0068] figure 2 It shows the temperature slope line diagram of the binary mixed refrigerant composition obtained without adding additives through the REFPROP8.0 program of the present invention. However, in order to form the near-azeotropic refrigerant composition for the purpose of the present invention, after adding additives, such as figure 1 Tested in the test device, it is known that if image 3 As a result, its temperature ramp is minimized.

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Abstract

The invention relates to a novel environment-friendly refrigeration agent for replacing monochlorodifluoromethane (R-22), comprising the components: 70-99kg of propane (R-290) and 1-30kg of propylene (R-1270) which belong to hydrocarbon series; and for near azeotropy, 0.5-1kg of additive-hexamethyl silicone oil is added; therefore, the novel environment-friendly refrigeration agent becomes near azeotropic mixed refrigeration agent with the ozone depletion index (ODP) of 0 and global warming potential (GWP) of 3.

Description

[0001] Technical field: The present invention relates to a new environment-friendly refrigerant composition for replacing chlorodifluoromethane (R-22). Background technique [0002] Refrigerant (Refrigerant) refers to the starting fluid of the refrigeration cycle system. It is a general term for objects that take heat from low-temperature objects to high-temperature objects. ) and Hydrochlorofluorocarbon (Hydrochlorofluorocarbon, hereinafter referred to as 'HCFC') and fluorocarbon (Hydro fluorocarbon, hereinafter referred to as 'HFC'). [0003] However, the destruction of the ozone layer in the stratosphere caused by CFCs and HCFCs has become a global environmental problem. Therefore, the production and use of CFCs and HCFCs that destroy the ozone layer in the stratosphere are restricted by the Montreal Protocol adopted in 1987. Therefore, most countries in the world want to use alternative refrigerants with an ozone depletion index (ODP) of 0.0. [0004] Moreover, the Kyoto ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/04
Inventor 尹明和
Owner 濮阳市中炜精细化工有限公司
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