Refrigerant and method for preparing the same

Abstract

The present application provides a refrigerant and a method for preparing the same. The refrigerant is composed of a first component, a second component and a third component, wherein: the first component is 3,3,3-trifluoropropyne; the second component is trifluoroiodomethane; the third component is one of propylene or fluoroethane; in the refrigerant, the content of the first component is a first preset value, the content of the second component is a second preset value, and the content of the third component is a third preset value; satisfying: the first preset value, the second preset value and the third preset value are all greater than zero, and the sum is 100%. The present application is a refrigerant composed of three components, with a GWP of less than 150 and an ODP of 0. Under the premise of ensuring good environmental performance of the refrigerant, the thermal performance is equivalent to R290, and the flammability is greatly reduced, which can solve the technical problems of high flammability and poor safety performance of R290 refrigerant.

Description

Technical Field

[0001] The present application belongs to the technical field of refrigerants, and specifically relates to a refrigerant and a preparation method thereof. Background Art

[0002] As carbon emissions lead to global warming and a harsher climate, promoting the air-conditioning system industry to adopt low global warming potential (GWP) refrigerant replacement technology has become a major development direction for the refrigeration industry.

[0003] Common alternative refrigerants currently used in the air-conditioning industry include propane (R290). As a natural refrigerant, R290 has good environmental performance (ODP=0, GWP=3), but it is highly flammable and belongs to the category of extremely flammable refrigerants. It has great deficiencies in safety, which makes it difficult for R290 refrigerant to be marketed.

[0004] Therefore, it is necessary to find a mixed refrigerant with good environmental performance, high safety, and thermal performance equivalent to or even better than R290 to replace R290 in order to maximize the requirements of refrigerant environmental protection, safety, and high efficiency. Summary of the invention

[0005] Therefore, the present application provides a refrigerant and a preparation method thereof, which can solve the problem that R290 in the prior art has good environmental performance but has safety issues.

[0006] In order to solve the above problems, the present application provides a refrigerant composed of a first component, a second component and a third component, wherein:

[0007] The first component is 3,3,3-trifluoropropyne;

[0008] The second component is trifluoroiodomethane;

[0009] The third component is one of propylene and fluoroethane;

[0010] In the refrigerant, the content of the first component is a first preset value, the content of the second component is a second preset value, and the content of the third component is a third preset value; satisfying: the first preset value, the second preset value and the third preset value are all greater than zero, and the sum is 100%.

[0011] Optionally, the first preset value is a molar ratio of 8%-44%.

[0012] Optionally, the first preset value is a molar ratio of 12%-36%.

[0013] Optionally, the first preset value is a molar ratio of 16%-28%.

[0014] Optionally, the first preset value is a molar ratio of 20%.

[0015] Optionally, the second preset value is a molar ratio of 28%-44%.

[0016] Optionally, the second preset value is a molar ratio of 32%-40%.

[0017] Optionally, the second preset value is a molar ratio of 36%.

[0018] Optionally, the third preset value is a molar ratio of 28%-60%.

[0019] Optionally, the third preset value is a molar ratio of 32%-56%.

[0020] Optionally, the third preset value is a molar ratio of 36%-52%.

[0021] Optionally, the third preset value is a molar ratio of 40%-48%.

[0022] Optionally, the third preset value is a molar ratio of 44%.

[0023] According to another aspect of the present application, there is provided a method for preparing the refrigerant as described above, comprising:

[0024] At room temperature, the first component, the second component and the third component are physically mixed evenly to obtain the refrigerant.

[0025] The present application provides a refrigerant, which is composed of a first component, a second component and a third component, wherein: the first component is 3,3,3-trifluoropropyne; the second component is trifluoroiodomethane; the third component is one of propylene and fluoroethane; in the refrigerant, the content of the first component is a first preset value, the content of the second component is a second preset value, and the content of the third component is a third preset value; and the first preset value, the second preset value and the third preset value are all greater than zero, and the sum is 100%.

[0026] The present application adopts a refrigerant composed of three components, with a GWP of less than 150 and an ODP of 0. Under the premise of ensuring the good environmental performance of the refrigerant, the thermal performance is equivalent to that of R290, and the flammability is greatly reduced. This can solve the technical problems of high flammability and poor safety performance of R290 refrigerant. DETAILED DESCRIPTION

[0027] The technical solution of the present application will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0028] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0029] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the application. The technology and methods known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology and methods should be considered as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments can have different values.

[0030] In addition, it should be noted that the use of terms such as "first" and "second" to limit the components is only for the convenience of distinguishing the components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0031] According to an embodiment of the present application, a refrigerant is composed of a first component, a second component and a third component, wherein:

[0032] The first component is 3,3,3-trifluoropropyne;

[0033] The second component is trifluoroiodomethane;

[0034] The third component is one of propylene and fluoroethane;

[0035] In the refrigerant, the content of the first component is a first preset value, the content of the second component is a second preset value, and the content of the third component is a third preset value; satisfying: the first preset value, the second preset value and the third preset value are all greater than zero, and the sum is 100%.

[0036] The present application adopts a refrigerant composed of three components, with a GWP of less than 150 and an ODP of 0. Under the premise of ensuring the good environmental performance of the refrigerant, the thermal performance is equivalent to that of R290, and the flammability is greatly reduced. This can solve the technical problems of high flammability and poor safety performance of R290 refrigerant.

[0037] The refrigerant in this application has the following advantages:

[0038] (1) It is a mixed environmentally friendly refrigerant with better flammability than R290 and much higher safety than R290;

[0039] (2) The ozone depletion potential (ODP) value is zero and the global warming potential (GWP) value is low, less than 150, which can meet the current Kigali Amendment's control requirements for refrigerants;

[0040] (3) It has good thermodynamic properties, comparable to R290.

[0041] The basic parameters of the components used in the refrigerant of this application and R290 are shown in Table 1 below;

[0042] Table 1 Basic parameters of each component

[0043]

[0044] From the data in Table 1, it can be seen that in terms of flammability: the flammability levels of TFP, R1270, R290 and R161 are Class 3, and the flammability level of R13I1 is Class 1, which is a non-flammable working fluid. Therefore, by mixing R13I1 non-flammable working fluid into the refrigerant of the present application, the flammability of the refrigerant is at least better than that of R290.

[0045] In terms of GWP: the current GWP limit for R290 use is less than 150, and the GWPs of TFP, R13I1, R1270, R290 and R161 are 11, 1, 2, 3 and 4 respectively. The GWP after mixing is basically the same as R290, and all meet the limit of less than 150.

[0046] In terms of thermodynamic performance: the main measurement indicators are COP and relative volumetric cooling capacity. Compared with R290, R1270 has a low relative COP and a large volumetric cooling capacity. The relative COP and relative volumetric cooling capacity of R13I1 are both smaller. The COP of TFP is relative to R290, and its volumetric cooling capacity is higher than R290. The relative COP and volumetric cooling capacity of R161 are both larger than R290. Therefore, by mixing the above-mentioned working fluids, the thermodynamic performance of the mixture can be made equivalent to that of R290 at an appropriate proportion.

[0047] In combination with the above, the present invention can achieve the effect of complementary advantages and making up for one's own shortcomings by mixing the above working fluids and calculating the proportions described in the present invention.

[0048] According to another aspect of the present application, there is provided a method for preparing the refrigerant as described above, comprising:

[0049] At room temperature, the first component, the second component and the third component are physically mixed evenly to obtain the refrigerant.

[0050] Since the three components are all in liquid phase at room temperature, the preparation can be completed by direct physical mixing, which is simple to operate.

[0051] The present application is described and compared with specific embodiments below to demonstrate the superiority of the refrigerant of the present application.

[0052] Example 1

[0053] The three components of 3,3,3-trifluoropropyne, trifluoroiodomethane and propylene are physically mixed in a molar ratio of 8:32:60 in a liquid phase at room temperature to obtain an environmentally friendly mixed working fluid.

[0054] Example 2

[0055] The three components of 3,3,3-trifluoropropyne, trifluoroiodomethane and propylene are physically mixed in a molar ratio of 12:28:60 in a liquid phase at room temperature to obtain an environmentally friendly mixed working fluid.

[0056] Example 3

[0057] The three components of 3,3,3-trifluoropropyne, trifluoroiodomethane and propylene are physically mixed in a molar ratio of 16:28:56 in a liquid phase at room temperature to obtain an environmentally friendly mixed working fluid.

[0058] Example 4

[0059] The three components of 3,3,3-trifluoropropyne, trifluoroiodomethane and propylene are physically mixed in a molar ratio of 20:32:48 in a liquid phase at room temperature to obtain an environmentally friendly mixed working fluid.

[0060] Example 5

[0061] The three components of 3,3,3-trifluoropropyne, trifluoroiodomethane and propylene are physically mixed in a molar ratio of 28:28:44 in a liquid phase at room temperature to obtain an environmentally friendly mixed working fluid.

[0062] Example 6

[0063] The three components of 3,3,3-trifluoropropyne, trifluoroiodomethane and propylene are physically mixed in a molar ratio of 36:28:36 in a liquid phase at room temperature to obtain an environmentally friendly mixed working fluid.

[0064] Example 7

[0065] The three components of 3,3,3-trifluoropropyne, trifluoroiodomethane and propylene are physically mixed in a molar ratio of 44:28:28 in a liquid phase at room temperature to obtain an environmentally friendly mixed working fluid.

[0066] Example 8

[0067] The three components of 3,3,3-trifluoropropyne, trifluoroiodomethane and fluoroethane are physically mixed in a molar ratio of 8:40:52 in a liquid phase at room temperature to obtain an environmentally friendly mixed working fluid.

[0068] Example 9

[0069] The three components of 3,3,3-trifluoropropyne, trifluoroiodomethane and fluoroethane are physically mixed in a molar ratio of 12:44:44 in a liquid phase at room temperature to obtain an environmentally friendly mixed working fluid.

[0070] Example 10

[0071] The three components of 3,3,3-trifluoropropyne, trifluoroiodomethane and fluoroethane are physically mixed in a molar ratio of 20:36:44 in a liquid phase at room temperature to obtain an environmentally friendly mixed working fluid.

[0072] Embodiment 11

[0073] The three components of 3,3,3-trifluoropropyne, trifluoroiodomethane and fluoroethane are physically mixed in a molar ratio of 28:32:40 in a liquid phase at room temperature to obtain an environmentally friendly mixed working fluid.

[0074] Example 12

[0075] The three components of 3,3,3-trifluoropropyne, trifluoroiodomethane and fluoroethane are physically mixed in a molar ratio of 36:28:36 in a liquid phase at room temperature to obtain an environmentally friendly mixed working fluid.

[0076] Embodiment 13

[0077] The three components of 3,3,3-trifluoropropyne, trifluoroiodomethane and fluoroethane are physically mixed in a molar ratio of 40:28:32 in a liquid phase at room temperature to obtain an environmentally friendly mixed working fluid.

[0078] Embodiment 14

[0079] The three components of 3,3,3-trifluoropropyne, trifluoroiodomethane and fluoroethane are physically mixed in a molar ratio of 44:28:28 in a liquid phase at room temperature to obtain an environmentally friendly mixed working fluid.

[0080] Comparative Example 1

[0081] The three components of 3,3,3-trifluoropropyne, trifluoroiodomethane and propylene are physically mixed in a molar ratio of 8:68:24 in a liquid phase at room temperature to obtain an environmentally friendly mixed working fluid.

[0082] Comparative Example 2

[0083] The three components of 3,3,3-trifluoropropyne, trifluoroiodomethane and propylene are physically mixed in a molar ratio of 12:72:16 in a liquid phase at room temperature to obtain an environmentally friendly mixed working fluid.

[0084] Comparative Example 3

[0085] The three components of 13,3,3-trifluoropropyne, trifluoroiodomethane and fluoroethane are physically mixed in a molar ratio of 20:68:12 in a liquid phase at room temperature to obtain an environmentally friendly mixed working fluid.

[0086] Comparative Example 4

[0087] The three components of 3,3,3-trifluoropropyne, trifluoroiodomethane and fluoroethane are physically mixed in a molar ratio of 4:76:20 in a liquid phase at room temperature to obtain an environmentally friendly mixed working fluid.

[0088] Under the refrigeration conditions of the air-conditioning equipment (i.e., the evaporating temperature is 10°C, the condensing temperature is 40°C, the superheat is 5°C, the subcooling is 5°C, and the adiabatic efficiency of the compressor is 0.75), the comparison results of the GWP, relative thermodynamic performance (i.e., relative unit volume cooling capacity and relative performance coefficient COP) and flammability of the above embodiments, comparative examples and R290 are shown in Table 2.

[0089] As can be seen from Table 2, the GWP of the mixed refrigerant working fluids of the present application is less than 10, which can fully meet the current Kigali Amendment's limit control requirements for refrigerants. According to ASHRAE 34, the flammability level of refrigerants can be divided into 1 (non-flammable), 2L (weakly flammable), 2 (flammable) and 3 (highly flammable), and the flammability level of each component is: R13I1 is 1, R290, R1270, R161 is 3, and the present application adds R13I1 non-flammable working fluid to the high flammability level components, so that the flammability of the refrigerants in all embodiments is at least better than R290.

[0090] It can also be seen from Table 2 that the relative volumetric refrigeration capacity and relative performance coefficient of the mixed refrigerant of the present application are comparable to those of R290, and it can be considered that the thermodynamic performance is comparable to or even better than that of R290; the relative volumetric refrigeration capacity of all embodiments is greater than 1, and the maximum volumetric refrigeration capacity (as shown in the results of Examples 6 and 7) is increased by 21% compared with R290; the relative performance coefficient of all embodiments is greater than 0.9, and the thermodynamic performance is excellent, and it can become an environmentally friendly refrigerant to replace R290.

[0091] Comparative Examples 1-4 are not within the molar ratios provided in the present application, and both the relative volumetric refrigeration capacity and the relative performance coefficient are relatively small.

[0092] In summary, the three-component mixed refrigerant provided in this application not only has the environmental protection characteristics of low GWP, but also has better safety performance than R290, and its thermal performance is comparable to or even better than that of R290 refrigerant, and can be a good substitute for R290.

[0093] Table 2 Performance comparison between the refrigerant in this application and R290

[0094] refrigerant GWP Relative volumetric cooling capacity Relative COP Flammability level R290 3 1 1 A3 Example 1 2.4 1.16 0.95 A2L Example 2 2.8 1.17 0.95 A2 Example 3 3.16 1.18 0.95 A2 Example 4 3.48 1.17 0.93 A2L Example 5 4.24 1.20 0.93 A2 Example 6 4.96 1.21 0.92 A2 Example 7 5.68 1.21 0.91 A2 Example 8 3.36 1.04 1.00 A2L Example 9 3.52 1.03 0.99 A2L Example 10 4.32 1.05 0.99 A2L Embodiment 11 5 1.07 0.98 A2L Example 12 5.68 1.09 0.98 A2 Embodiment 13 5.96 1.09 0.98 A2 Embodiment 14 6.24 1.1 0.97 A2 Comparative Example 1 2.04 0.93 0.83 A2L Comparative Example 2 2.36 0.87 0.78 A2L Comparative Example 3 3.36 0.86 0.86 A2L Comparative Example 4 2 0.85 0.89 A2L

[0095] It is easy for those skilled in the art to understand that the above-mentioned implementation modes can be freely combined and superimposed without conflict.

[0096] The above is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application. The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present application, and these improvements and variations should also be regarded as the protection scope of the present application.

Claims

1. A refrigerant, characterized in that: It is composed of a first component, a second component and a third component, wherein: The first component is 3,3,3-trifluoropropyne; The second component is trifluoroiodomethane; The third component is one of propylene and fluoroethane; In the refrigerant, the content of the first component is a first preset value, the content of the second component is a second preset value, and the content of the third component is a third preset value; satisfying: the first preset value, the second preset value and the third preset value are all greater than zero, and the sum is 100%; Wherein, the first preset value is a molar ratio of 8%-44%, the second preset value is a molar ratio of 28%-44%, and the third preset value is a molar ratio of 28%-60%.

2. The refrigerant according to claim 1, characterized in that The first preset value is a molar ratio of 12%-36%.

3. The refrigerant according to claim 2, characterized in that The first preset value is a molar ratio of 16%-28%.

4. The refrigerant according to claim 3, characterized in that The first preset value is a molar ratio of 20%.

5. The refrigerant according to claim 1, characterized in that The second preset value is a molar ratio of 32%-40%.

6. The refrigerant according to claim 5, characterized in that The second preset value is a molar ratio of 36%.

7. The refrigerant according to claim 1, characterized in that The third preset value is a molar ratio of 32%-56%.

8. The refrigerant according to claim 7, characterized in that The third preset value is a molar ratio of 36%-52%.

9. The refrigerant according to claim 8, characterized in that The third preset value is a molar ratio of 40%-48%.

10. The refrigerant according to claim 9, characterized in that The third preset value is a molar ratio of 44%.

11. A method for preparing the refrigerant as claimed in claims 1 to 10, characterized in that: include: At room temperature, the first component, the second component and the third component are physically mixed evenly to obtain the refrigerant.

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