CN103436239A - Refrigerant and preparation method thereof - Google Patents
Refrigerant and preparation method thereof Download PDFInfo
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- CN103436239A CN103436239A CN2013104109225A CN201310410922A CN103436239A CN 103436239 A CN103436239 A CN 103436239A CN 2013104109225 A CN2013104109225 A CN 2013104109225A CN 201310410922 A CN201310410922 A CN 201310410922A CN 103436239 A CN103436239 A CN 103436239A
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Abstract
The invention relates to the field of refrigeration, and in particular relates to a refrigerant and a preparation method thereof. The refrigerant consists of the following components in percentage by weight: 58.1-62.1% of pentafluoroethane, 7.5-9.5% of 1,1-difluoroethane, 25.5-29.5% of 1,1,1,2-tetrafluoroethane and 2.4-3.9% of propane. The preparation method comprises the following steps of: injecting the four raw materials namely pentafluoroethane, 1,1-difluoroethane, 1,1,1,2-tetrafluoroethane and propane into a steel cylinder respectively; mixing the four raw materials in the steel cylinder to obtain the refrigerant. The refrigerant provided by the invention meets two conditions that the refrigerating effect is close to that of R22 (monochlorodifluoromethane) and the ozonosphere is not destroyed, so that the refrigerant can replace R22.
Description
Technical field
The present invention relates to refrigerating field, in particular to refrigeration agent and preparation method thereof.
Background technology
Refrigeration agent, claim again refrigeration working medium, is the working medium of refrigeration cycle, is to utilize the phase transformation of self to carry out transferring heat heat absorption when refrigeration agent is vaporized in vaporizer, heat release while liquefying in condenser.
Up to the present, the family expenses that occurred, commercial refrigeration agent mainly comprise freonll-11 class refrigeration agent and carbon-hydrogen refrigerant.
Freonll-11 class refrigeration agent refers to the chloro-fluoro-carbon kind compound, comprises methyl chlorofluoride, Freon 13, difluorochloromethane etc., and freonll-11 is the arch-criminal of depletion of the ozone layer.Wherein difluorochloromethane (R22) relies on its excellent refrigeration performance, in the development later stage of freonll-11, most widely used general, Applicative time is longer, but due to its havoc to ozonosphere, Montreal protocol is clear, developed country stopped the production and consumption of difluorochloromethane fully from 1 day January in 1996, and the last date of stopping using of developing country is on January 1st, 2010.Under these circumstances, each state has all carried out the research work of the alternative refrigerant of R22.
Summary of the invention
The object of the present invention is to provide refrigeration agent and preparation method thereof, to solve the above problems.
Refrigeration agent is provided in an embodiment of the present invention, by weight percentage, has consisted of the following composition:
The 58.1-62.1% pentafluoride ethane, 7.5-9.5%1,1-C2H4F2 C2H4F2,25.5-29.5%1,1,1,2-Tetrafluoroethane, 2.4-3.9% propane.
The preparation method of above-mentioned refrigeration agent is provided in an embodiment of the present invention, has comprised the following steps:
Inject pentafluoride ethane, 1 respectively in steel cylinder, 1-C2H4F2 C2H4F2, HFA 134a and four kinds of raw materials of propane;
Above-mentioned four kinds of raw materials in steel cylinder are mixed, obtain refrigeration agent.
Refrigeration agent of the above embodiment of the present invention and preparation method thereof, the refrigeration agent obtained is by pentafluoride ethane, 1,1-C2H4F2 C2H4F2,1,1, four kinds of reagent of 1,2-Tetrafluoroethane and propane form, and the thermodynamics that the thermodynamic property of these four kinds of reagent all meets refrigeration agent requires: critical temperature is higher, thereby very easily liquefaction at normal temperatures, be applicable to doing refrigeration agent, and the work area that makes refrigeration cycle is away from stagnation point, the more approaching contrary carnot's working cycle of refrigeration cycle, throttling loss is little, and refrigerating duty is high; And normal boiling point is lower, thereby the lowest refrigerating temperature that can reach is low; Temperature of solidification is low, make the temperature range of refrigeration cycle wider, thereby the refrigeration agent scope of application is large; Emergent pressure is lower, thereby the needed pressure that liquefies is lower, has alleviated the load of compressor, has both reduced the requirement to compressor, has also reduced energy consumption.The boiling point of the refrigeration agent of the present invention be comprised of above four kinds of reagent, critical temperature, emergent pressure all approach with R22, therefore can reach the similar refrigeration of R22 simultaneously.
Simultaneously these four kinds of reagent are all the compounds of chloride atom not, thereby the refrigeration agent formed can not damage the ozone layer.
As can be seen here, the refrigeration agent of above-described embodiment meets " refrigeration approaches R22 " and " not damaging the ozone layer " two conditions, thereby can substitute R22.
Embodiment
Below by specific embodiment, the present invention is described in further detail.
" YH222A " hereinafter all refers to refrigeration agent of the present invention.
Embodiment mono-
This embodiment provides a kind of refrigeration agent, by weight percentage, consists of the following composition:
The 58.1-62.1% pentafluoride ethane, 7.5-9.5%1,1-C2H4F2 C2H4F2,25.5-29.5%1,1,1,2-Tetrafluoroethane, 2.4-3.9% propane.
The refrigeration agent of this embodiment is by pentafluoride ethane (R125), 1,1-C2H4F2 C2H4F2 (R152a), 1,1,1, four kinds of reagent of 2-Tetrafluoroethane (R134a) and propane (R290) form, and the thermodynamic property of these four kinds of reagent all meets the thermodynamics requirement of refrigeration agent, and critical temperature is higher, thereby very easily liquefaction at normal temperatures, be applicable to doing refrigeration agent, and the work area that makes refrigeration cycle is away from stagnation point, the more approaching contrary carnot's working cycle of refrigeration cycle, throttling loss is little, and refrigerating duty is high; And normal boiling point is lower, thereby the lowest refrigerating temperature that can reach is low; Temperature of solidification is low, make the temperature range of refrigeration cycle wider, thereby the refrigeration agent scope of application is large; Emergent pressure is lower, thereby the needed pressure that liquefies is lower, has alleviated the load of compressor, has both reduced the requirement to compressor, has also reduced energy consumption; The boiling point of the refrigeration agent be comprised of above four kinds of reagent, critical temperature, emergent pressure all approach with R22, therefore can reach the similar refrigeration of R22.
Simultaneously these four kinds of reagent are all the compounds of chloride atom not, thereby the refrigeration agent formed can not damage the ozone layer.
As can be seen here, the refrigeration agent of above-described embodiment meets " refrigeration approaches R22 " and " not damaging the ozone layer " two conditions, thereby can substitute R22.
The refrigeration agent of above-described embodiment with and four kinds of contained reagent, and the thermodynamic property of R22 is as shown in table 1 below, as seen from table, the boiling point of refrigeration agent of the present invention and R22, critical temperature, emergent pressure are really very approaching.
The refrigeration agent of table 1 embodiment mono-with and four kinds of contained reagent, and the thermodynamic property of R22
In addition, the refrigeration agent of above-described embodiment can also reach following technique effect: compatible with the compressor oil in the R22 refrigeration system, thereby can directly join and take in the air-conditioning system that R22 is refrigeration agent, do not need to change compressor oil, thereby reduced in same refrigeration equipment the cost of directly replacing refrigeration agent, make replacement work save time and laborsaving simultaneously.In addition, the compressor oil used due to the R22 refrigeration system is generally mineral oil, mineral oil is that to take the remains of animal and plant in time immemorial be carrier, the crude oil that passes through the change of long-time various factors and form, the base oil that refines through common technical process and form, the advantage of mineral oil is that cost is low.Therefore, refrigeration agent of the present invention also adopts mineral oil to reduce equipment cost.
And in correlation technique, for the refrigeration agent common incompatible with mineral oil (refrigeration agents such as R404A, R407C) that substitutes R22, can only take synthetic oil as compressor oil, synthetic oil is from the coal mine gas in crude oil or ethene, propylene that Sweet natural gas disperseed out, then refines into through the chemical reaction of the complexity such as polymerization, catalysis the lubricating fluid that macromole forms.And synthetic oil is high with respect to the mineral oil cost of development, therefore, the material cost of R404A, R407C refrigeration equipment is higher than refrigeration agent of the present invention.
In addition, the present invention also contrasts the thermodynamic property of the refrigeration agent of above embodiment and R404A, R407C, ozone-depleting amount (ODP), the latent value (GWP) of Greenhouse effect, as shown in table 2.
The thermodynamic property of table 2 the present invention and R404A, R407C, ODP, GWP
As shown in Table 2, with R404A, R407C, compare, the boiling point of YH222A more approaches the boiling point of replaced product R22, so the refrigerating duty of YH222A more approaches R22, and the requirement of the Working environment of compressor is also more approached to R22.And, because the critical temperature of gas is higher, just more easily liquefaction, therefore compare with R404A, the YH222A required pressure that liquefies is little, and then looser to the requirement of compressor.Because emergent pressure refers to that gas is under critical temperature, make its needed minimum pressure that liquefies simultaneously.Therefore with R407C, compare, the YH222A required minimum pressure that liquefies is little, and then looser to the requirement of compressor.
Embodiment bis-
This embodiment provides a kind of refrigeration agent, by weight percentage, consists of the following composition:
The 58.5-62% pentafluoride ethane, 8-9.5%1,1-C2H4F2 C2H4F2,27-29.5%1,1,1,2-Tetrafluoroethane, 2.4-3.9% propane.
Embodiment tri-
This embodiment provides a kind of refrigeration agent, counts by weight, consists of the following composition:
The 59-61% pentafluoride ethane, 8-9%1,1-C2H4F2 C2H4F2,27.5-29.5%1,1,1,2-Tetrafluoroethane, 2.4-3.9% propane.
Each raw material in above embodiment mono-to three can adopt the arbitrary proportion in its percentage range.
For concise and to the point description, below by tabulated form, embodiment tetra-to ten is described, as shown in table 3.
The formula of table 3 embodiment tetra-to ten
Above embodiment bis-to ten all can reach all technique effects of embodiment mono-.
Embodiment 11
This embodiment provides the preparation method of above-mentioned refrigeration agent, comprises the following steps:
Step 101:: inject pentafluoride ethane, 1 respectively in steel cylinder, 1-C2H4F2 C2H4F2, HFA 134a and four kinds of raw materials of propane.
Step 102: the above-mentioned four kinds of raw materials in steel cylinder are mixed, obtain refrigeration agent.
Wherein, the method for mixing in step 102 has multiple, for example: the rolling steel cylinder.This mode is easy to operate.
Above-mentioned preparation method can also further improve, to reach more technique effect:
Preferably, to the step of injecting four kinds of raw materials in steel cylinder, be further respectively:
Inject successively propane, 1 in steel cylinder, 1-C2H4F2 C2H4F2,1,1,1,2-Tetrafluoroethane, pentafluoride ethane, adopt this order to add successively four kinds of reagent, be because: four kinds of proportions that reagent is shared in conjunction with the boiling point (as shown in table 1) of above-mentioned four kinds of reagent and in filling a prescription, add four kinds of reagent with said sequence, can, by the pressure-controlling in steel cylinder in reasonable, safe scope, improve the security while filling raw material.
Preferably, to the pentafluoride ethane, 1 injected in steel cylinder, the solvent volume of 1-C2H4F2 C2H4F2, HFA 134a and propane all is less than 90% of steel cylinder volume.Can make like this gaseous tension in steel cylinder remain in the tolerance range of steel cylinder.
On this basis, preferably, to the step of injecting four kinds of raw materials in steel cylinder, be further respectively: below 60 ℃, injecting four kinds of raw materials to steel cylinder respectively.Because the filling ratio of steel cylinder 0.9 is the filling ratio be often referred under 60 ℃, therefore according to be less than the steel cylinder volume 90% while adding reagent, below 60 ℃, add safer, the Peril Incident of avoiding high pressure to produce.
Preferably, before the step of injecting propane in steel cylinder, also comprise: with propane, clean steel cylinder.Clean steel cylinder with propane and can remove the air in steel cylinder, to obtain the product of more accurate proportioning.
Preferably, to the step of injecting four kinds of raw materials in steel cylinder, be further respectively: before often adding a kind of raw material, that steel cylinder is cooling.Cooling purpose is to reduce the pressure in steel cylinder by reducing temperature, improves the security of fill operations.
Embodiment 12
This embodiment provides a kind of more preferred preparation method of refrigeration agent above:
Step 201: use appropriate method to measure R125, R134a, R152a and R290 purity (R125, R134aR152a and R290 massfraction require to be greater than 99.9%).Consider in refrigeration agent and may contain a considerable number of impurity, present method calculation result should be proofreaied and correct.
Step 202: the quality of the drying of weighing and the 14L stainless steel steel cylinder that vacuumized is accurate to 0.01g.
Step 203: toward injecting standard in the 14L steel cylinder, be no more than filling ratio (0.81) or, to 90% volume, be calculated as follows each constituent mass:
Each constituent mass equals each component desired qualities per-cent and takes advantage of safe load except 100.
Annotate: safe load=density of liquid phase * 0.9 * 14L;
The density of liquid phase of 60 ℃ of lower R125=0.872;
The density of liquid phase of 60 ℃ of lower R134a=1.053;
The density of liquid phase of 60 ℃ of lower R152a=0.799;
The density of liquid phase of 60 ℃ of lower R290=0.428.
Step 204: with the component (as: R290 is high boiling substance) added at first, first remove the air in taking over before sample introduction, then will take over steel cylinder and be connected.Add R290 in steel cylinder, weigh, be accurate to 0.01g.
Annotate: as the R290 add-on is less than expected value, continue to add R290.As the R290 add-on is greater than expected value, open cylinder valve until obtain the R290 amount of expectation.Opening cylinder valve only allows to carry out when adding the first component.
Step 205: record is equipped with the steel cylinder quality of R290, and the tare weight that deducts steel cylinder with this mass value obtains the quality of added R290.
Step 206: then cooling steel cylinder in frozen water adds R152a with the same manner.Deduct with steel cylinder quality now the quality that steel cylinder quality in step 205 obtains added R152a.
Annotate: be greater than expected value for avoiding the R152a add-on, slowly add R152a.Before final weighing, make steel cylinder and content reach room temperature.
Step 207: after adding successively R134a and R125 by above step, rolling steel cylinder 1 hour.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. refrigeration agent, is characterized in that, by weight percentage, consists of the following composition:
The 58.1-62.1% pentafluoride ethane, 7.5-9.5%1,1-C2H4F2 C2H4F2,25.5-29.5%1,1,1,2-Tetrafluoroethane, 2.4-3.9% propane.
2. refrigeration agent according to claim 1, is characterized in that, by weight percentage, consists of the following composition:
The 58.5-62% pentafluoride ethane, 8-9.5%1,1-C2H4F2 C2H4F2,27-29.5%1,1,1,2-Tetrafluoroethane, 2.4-3.9% propane.
3. refrigeration agent according to claim 1, is characterized in that, by weight percentage, consists of the following composition:
The 59-61% pentafluoride ethane, 8-9%1,1-C2H4F2 C2H4F2,27.5-29.5%1,1,1,2-Tetrafluoroethane, 2.4-3.9% propane.
4. the preparation method of refrigeration agent claimed in claim 1, is characterized in that, comprises the following steps:
Respectively to injecting described pentafluoride ethane, described 1,1-C2H4F2 C2H4F2, described HFA 134a and four kinds of raw materials of described propane in steel cylinder;
Above-mentioned four kinds of raw materials in steel cylinder are mixed, obtain refrigeration agent.
5. the preparation method of refrigeration agent according to claim 4, is characterized in that, describedly to the step of injecting four kinds of raw materials in steel cylinder, is further respectively:
Inject successively propane, 1 in steel cylinder, 1-C2H4F2 C2H4F2, HFA 134a, pentafluoride ethane.
6. the preparation method of refrigeration agent according to claim 4, is characterized in that, to the pentafluoride ethane, 1 injected in described steel cylinder, the solvent volume of 1-C2H4F2 C2H4F2, HFA 134a and propane all is less than 90% of steel cylinder volume.
7. the preparation method of refrigeration agent according to claim 6, is characterized in that, describedly to the step of injecting four kinds of raw materials in steel cylinder, is further respectively:
Injecting four kinds of raw materials respectively in steel cylinder below 60 ℃.
8. the preparation method of refrigeration agent according to claim 4, is characterized in that, the method for described mixing is:
Described steel cylinder rolls.
9. the preparation method of refrigeration agent according to claim 5, is characterized in that, before the described step to injecting propane in steel cylinder, also comprises:
Clean described steel cylinder with propane.
10. the preparation method of refrigeration agent according to claim 4, is characterized in that, describedly to the step of injecting four kinds of raw materials in steel cylinder, is further respectively:
Before often adding a kind of raw material, that described steel cylinder is cooling.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106479442A (en) * | 2016-09-27 | 2017-03-08 | 宁波艾科制冷工程有限公司 | A kind of refrigerant composition earl august eugene lund ian robert and preparation method |
| CN107057647A (en) * | 2017-06-21 | 2017-08-18 | 合肥嘉仕诚能源科技有限公司 | It is a kind of for refrigerant of air-conditioning and preparation method thereof |
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| CN1076713A (en) * | 1992-02-03 | 1993-09-29 | 联合信号股份有限公司 | New refrigerant composition |
| CN1884428A (en) * | 2006-07-10 | 2006-12-27 | 浙江蓝天环保高科技股份有限公司 | Environment-friendly type heat pump mixed working medium |
| CN101006154A (en) * | 2004-08-25 | 2007-07-25 | 咸允植 | R502, r12 or r22 substitute mixed refrigerant and refrigeration system using thereof |
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2013
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1076713A (en) * | 1992-02-03 | 1993-09-29 | 联合信号股份有限公司 | New refrigerant composition |
| CN101006154A (en) * | 2004-08-25 | 2007-07-25 | 咸允植 | R502, r12 or r22 substitute mixed refrigerant and refrigeration system using thereof |
| CN1884428A (en) * | 2006-07-10 | 2006-12-27 | 浙江蓝天环保高科技股份有限公司 | Environment-friendly type heat pump mixed working medium |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106479442A (en) * | 2016-09-27 | 2017-03-08 | 宁波艾科制冷工程有限公司 | A kind of refrigerant composition earl august eugene lund ian robert and preparation method |
| CN107057647A (en) * | 2017-06-21 | 2017-08-18 | 合肥嘉仕诚能源科技有限公司 | It is a kind of for refrigerant of air-conditioning and preparation method thereof |
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| CN103436239B (en) | 2016-03-02 |
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Effective date of registration: 20190108 Address after: 011800 Heishatu Industrial Park, Wulanhua Town, Siziwang Banner, Ulanchabu City, Inner Mongolia Autonomous Region Patentee after: Inner Mongolia Yonghe Fluorine Chemical Co., Ltd. Address before: 324022 No. 1, No. 5 Donggang Road, Quzhou City, Zhejiang Province Patentee before: Zhejiang Yonghe Refrigerant Co., Ltd. |