CN101117570A - Industrial concentration heat transfer medium - Google Patents
Industrial concentration heat transfer medium Download PDFInfo
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- CN101117570A CN101117570A CNA2006100473960A CN200610047396A CN101117570A CN 101117570 A CN101117570 A CN 101117570A CN A2006100473960 A CNA2006100473960 A CN A2006100473960A CN 200610047396 A CN200610047396 A CN 200610047396A CN 101117570 A CN101117570 A CN 101117570A
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Abstract
The present invention relates to industrial rust and dirty proofing concentrated solution heat medium, which is used as the secondary refrigerant or heat transfer agent in an indirect heat transfer system in the process of chemical reaction and biological fermentation of the industrial production field. The heat medium comprises 9 percent to 26 percent (by weight) of C1 to C4 water-soluble alcohol, 6.5 percent to 9 percent (by weight) of anti-corrosive agent, and 65 percent to 89 percent (by weight) of water; the present invention also provides concentrated solution of the heat medium, 91 percent to 99 percent of C1 to C4 water-soluble alcohol, 0.9 percent to 9 percent of anti-corrosive agent, 0 percent to 0.05 percent of antisludging agent and industrial alkali. The product of the present invention has the advantages of secondary refrigerating, heat transfer, anti-corrosion, anti-dirty, and bacteria resistance. The applicable temperature scope is - 50 DEG C to 160 DEG C, The present invention is applied to various secondary refrigerating and heat transfer liquid medium in the industrial production field under different humidity.
Description
The invention belongs to the industrial production liquid heat-transfer medium, that does in chemical reaction in the industrial production field and the indirect heat transfer system in the biological fermentation process particularly that secondary refrigerant or heat transferring agent use has the concentration heat transfer medium of corrosion protection antiscale to metal.
Production process and temperature in many industrial production fields such as wine brewing, pharmacy and chemical industry are closely related; some at high temperature carries out; some carries out at low temperatures; thermo-negative reaction is arranged; thermopositive reaction is also arranged; in order to protect the material system temperature all the time under the state that processing condition require, be actually mobile heat transferring agent in the interlayer of serpentine tube by inside reactor or reactor outside and spread out of or import that heat finishes into.The most frequently used heat-transfer medium is a water, and the heat transfer temperature scope is 5-90 ℃, beyond this temperature range, because water is tending towards freezing or boiling and can not make heat transferring agent and use.The advantage of making heat transferring agent with water is that heat-transfer effect is good, with low cost, and its shortcoming is a corrosion equipment, and very easily fouling, also can go mouldy when recycling; Other heat-transfer medium commonly used also has inorganic salts, as sodium chloride aqueous solution, calcium chloride water, this class heat-transfer medium is serious to various metals and Corrosion of Stainless Steel, gradually by the organic alcohols heat-transfer medium, replace at present as aqueous glycol solution, aqueous solution of propylene glycol; Though yet single alcohol solution is lighter to the steel alloy corrosion, to industry-wide carbon steel and other metal still seriously corroded.A kind of heat exchange system, if heat-transfer medium does not wherein have corrosion, so, because of the action of rust of medium, this heat exchange system leakage phenomenon will occur through the time in about 15 years, its consequence is the work-ing life that has shortened entire equipment greatly.
At the protection against corrosion problem of heat transferring agent, existing a lot of report, but its Application Areas mainly concentrates on the automobile antifreeze solution aspect, for the report of other industrial circle seldom.Simultaneously, the major ingredient great majority are selected glycols for use in the automobile antifreeze solution, this class deicing fluid is higher because of boiling point, volatility is little, deicing fluid when being fit to do cooling fluid under the such comparatively high temps of motor car engine and engine stoping operation, but be not suitable for doing circulating cooling liquid under the lesser temps, because when low temperature (as-30 ℃), the viscosity of aqueous glycol solution can increase sharply, and circulation resistance is very big.Mention a kind of corrosion liquid coolant in the U.S. Pat 5718836, this refrigerant is used for automobile antifreeze solution, wherein, adds the calcium-magnesium ratio compound specially, and the adding of this compounds very easily causes the cooling recirculation system fouling.Contain 90% ethylene glycol in this liquid coolant, other pure content does not provide.Documents special permission publication number: 10-228382 title " high temperature water tolerance salt constituent " discloses a kind of brine composition, and to select glycols or glycerol for use be main body, content is 30～90%, be preferably 50～80%, but in actual applications following situation can appear: if how pure content too low (below 30%), then the freezing point of the aqueous solution will be very high, and the low-temperature condition that does not reach system requirements will freeze; When many alcohols content＞80%, its solution (below 0 ℃) viscosity under low-temperature condition can rise rapidly, mobile sharply decline, therefore the single polyol composition of this class is not suitable for recycling under low-temperature condition, only be suitable for the high temperature circulation system, (, when comparatively high temps, recycle just as automobile antifreeze solution, when the low temperature stationary state, keep not freezing getting final product), be unsuitable for using under the cold cycle state.
The objective of the invention is to overcome existing defective in the above-mentioned open source literature technology, provide a kind of and all can obtain the ideal recurrent state and meet the freezing point temperature that processing requirement reaches, be applied to cold, the heat transfer liquids medium that carries in multiple industrial production field at higher concentration (more than 90%) and low concentration (below 30%).
The present invention selects C for use
1～C
4Water-soluble alcohol and the inhibitor composition of deciding, for many alcohol (containing the above alcohol of two hydroxyls) and or the mixture of single pure (alcohol that contains a hydroxyl), make 30% following dilute solution and 90% above concentrated solution respectively, under low concentration, utilize this heat-transfer medium just can obtain very low freezing point; Under higher concentration (more than 90%), when system still has good flowability during at low temperature below-80 ℃, the transportation of being more convenient for of this no concentrated liquid is used.
Provided by the invention industrially have the heat-transfer medium of corrosion protection antiscale to metal, mainly by water, C
1～C
4Water-soluble alcohol and inhibitor are formed, and it is characterized in that this heat-transfer medium mainly is made up of the weight percent of following component:
C
1～C
4Water-soluble alcohol 9～26%, inhibitor 6.5～9%, Scale inhibitors 0.1～0.2%, industrial soda 0～1%, water 65～84%, pH value 7～10.
Provided by the invention industrially have the heat-transfer medium of corrosion protection antiscale to metal, mainly is by C
1～C
4The concentrated solution that water-soluble alcohol and inhibitor are mixed with is characterized in that this heat-transfer medium is made up of the weight percent of following component:
C
1～C
4Water-soluble alcohol 91～99%, inhibitor 0.9～9%, Scale inhibitors 0～0.05%, industrial soda 0～0.05%, pH value 7～10.
In heat-transfer medium of the present invention, selected water-soluble alcohol is methyl alcohol, ethanol, propyl alcohol, Virahol, ethylene glycol, propylene glycol, glycerol and Diethylene Glycol.According to the use temperature scope, these alcohol can be selected for use separately, also can mix use in varing proportions, in the hope of obtaining best heat-transfer effect.For example, under the hot conditions about 100 ℃, mainly use glycols, to reduce the volatilization loss of heat-transfer medium, and in the low temperature environment below 0 ℃, then mainly select the mixture of single alcohol and many alcohol for use, have very low freezing point and good flowability to guarantee heat transferring agent.Meanwhile, also to consider the price of raw material.Selected inhibitor is phosphoric acid salt, silicate, nitrate, nitrite, borate, molybdate, benzoate, EDTA sodium salt.Exactly these inhibitors are its sodium salt or sylvite and do not contain calcium, magnesium salts (because of calcium, magnesium salts are very easily produced precipitation, fouling).Wherein, borate, molybdate and benzoate also have bacteriostatic action.According to the difference of heat-transfer system material, these inhibitors also can use separately or several mixing is used, and the consumption of each inhibitor is no more than 5% (weight) of heat-transfer medium total amount.In inhibitor, can also select and add organic phospho acid, as hydroxyl two methene phosphoric acid (HEDP), polyacrylic acid, benzotriazole, thiazole, their adding total amount is no more than 0.5% (weight) of heat-transfer medium total amount, usually in the scope of 0.01-0.3% (weight), be mixed together use with other inhibitor with one or more.The adding of these inhibitors can further improve scale inhibition, corrosion protection result, the heat-transfer system that is used for having relatively high expectations.Selected water is service water, natural water, pure water.The pH value of heat-transfer medium of the present invention should be controlled in 7～10 the scope, is lower than 7 as pH value, then adjusts with industrial soda such as NaOH or KOH, and add-on is 0.05～2% of a heat-transfer medium gross weight.Because when pH value is lower than 7, some inhibitor is with ineffective, and corrosion phenomenon can take place.
In sum, salient point of the present invention is: invented and a kind ofly can be applied to multiple Industrial processes, temperature range changes between-80 ℃～160 ℃, has cold, the heat transfer liquids medium that carries of corrosion protection, scale inhibition, bacteriostatic action.The present invention compared with prior art, the composition main body is when the identical weight proportioning, the present invention can obtain more wide in range operating temperature range and lower freezing point; Be lower than 30% or alcohol mixture concentration greater than more than 90%, the present composition still can normal use.The present invention selects the mixture of single hydroxyl alcohol and polyhydroxy-alcohol for use, not only is suitable for and makes high-temperature heat-transfer medium, especially good economic again year cold medium under low temperature (below the 80 ℃) state.Freezing point and viscosity with glycol composition in the present composition and the Japanese document contrasts below, and as can be seen from Table 1, it is all very big that the freezing point of the following two kinds of compositions of same concentrations condition and viscosity differ.
The freezing point of table 1 present composition and glycols composition and viscosity synopsis (weight percent)
| Composition and index | The present composition | Documents 1 composition |
| Ethylene glycol | 1.8 | 30 |
| Ethanol | 1.2 | |
| Methyl alcohol | 27 | |
| Water | 69 | 69 |
| Inhibitor etc. | 1 | 1 |
| PH value | 9 | 12 |
| Freezing point | -27 | -14 |
| Viscosity cps (20 ℃) | 1.1 | 2.27 |
| Viscosity cps (10 ℃) | 5.57 | 7.18 |
| Viscosity cps (20 ℃) | 8.18 | 19.60 |
Further set forth specific embodiments of the present invention below in conjunction with embodiment.
Embodiment 1
The heat-transfer medium that a kind of weight percent is composed as follows: (making secondary refrigerant uses)
Virahol 4%, methyl alcohol 3%, propylene glycol 2.5%, ethylene glycol 7.5%, Diethylene Glycol 6%, Sodium Benzoate 4%, SODIUMNITRATE 2%, EDTA disodium 0.3%, HEDP 0.01%, benzotriazole 0.1%, Sodium orthomolybdate 1%, borax 1%, sodium hydroxide 1%, water 67.59%.
This secondary refrigerant freezing point is-15 ℃, can be used in the material cooling systems such as 0～-10 ℃ of beer fermentation, pharmacy under the environment, iron and steel, copper, aluminium material are not all had the burn into non-scaling, do not go mouldy, and the corrosion contrast and experiment of this secondary refrigerant and tap water, spirituous solution sees Table 2:
The non-corrosibility comparison sheet of table 2: embodiment 1 and other refrigerant
| The copper sheet loss of weight | 0 | 0.3522 | 0.3924 | |
| The aluminium flake loss of weight | 0 | 0.1021 | 0.1251 | |
| 3 years | The steel disc loss of weight | 0.0002 | 2.5004 | 2.5269 |
| The copper sheet loss of weight | 0 | 1.1202 | 1.2018 | |
| The aluminium flake loss of weight | 0 | 0.4561 | 0.5155 | |
| Steel disc corrosion rate (year) | 0.0007％ | 8.38％ | 8.55％ | |
Test conditions is: 25 ℃, and normal pressure, the thick carbon steel of 5mm, copper, aluminium test piece.Assess the anti-corrosion performance of test solution by periodic measurement test piece loss of weight, and according to the corrosion rate formula:
Metal loss of weight/initial weight/time * 100=corrosion rate percentage ratio (M)
Calculate the corrosion rate of different solutions to various metals.The secondary refrigerant that can find out embodiment 1 from table 2 only has slight corrosion to steel disc, and corrosion rate is every year 0.0007%, and tap water and alcohol water are then all very serious to the corrosion of iron and steel, copper, aluminium.
Embodiment 2
Virahol 4%HEDP0.01%, propylene glycol 3%, benzotriazole 0.15%, ethylene glycol 9%, Sodium orthomolybdate 1%, Sodium Benzoate 4%, borax 1%, SODIUMNITRATE 2%, sodium hydroxide 1%, EDTA disodium 0.3%, water 74.54%.
Embodiment 3
Ethanol 3%, Virahol 5%, propylene glycol 2%, ethylene glycol 5%, Sodium Benzoate 3%, SODIUMNITRATE 2%, EDTA disodium 0.2%, HEDP0.01%, Sodium orthomolybdate 1%, borax 1%, sodium hydroxide 1%, thiazole 0.1%, water 76.69%.
Embodiment 4
The heat-transfer medium weight percent is composed as follows:
Benzotriazole 0.1%, propylene glycol 9%, Sodium Benzoate 5%, tripoly phosphate sodium STPP 0.7%, borax 1%, EDTA disodium 0.2%, water 84%.
This heat-transfer medium freezing point is below-3 ℃, and boiling point is more than 105 ℃, and volatility is very little during normal temperature, and being used for does not have the burn into non-scaling, never degenerates iron and steel, copper, aluminium under-30 ℃ the temperature condition.
Embodiment 5
The heat-transfer medium weight percent is composed as follows:
Ethylene glycol 41%, propylene glycol 55%, SODIUMNITRATE 0.3%, Sodium Benzoate 3%, Sodium orthomolybdate 0.4%, borax 0.3%.
This heat-transfer medium volatility is minimum, can be used for-10 ℃ to 160 ℃ temperature range, in the chemical reaction system that heating and cooling hocket, iron and steel is not had corrosion.
Embodiment 6
Ethylene glycol 35%, Virahol 20%, propylene glycol 41%, SODIUMNITRATE 0.3%, Sodium Benzoate 3%, Sodium orthomolybdate 0.4%, borax 0.3%.
Embodiment 7
Ethylene glycol 8%, ethanol 80%, propylene glycol 5%, Sodium Benzoate 4%, SODIUMNITRATE 2%, Sodium orthomolybdate 0.9%, sodium hydroxide 0.05%, benzotriazole 0.05%.
Embodiment 8
The heat-transfer medium weight percent is composed as follows:
Ethylene glycol 6%, ethanol 4%, methyl alcohol 89%, Sodium Nitrite 0.9%, benzotriazole 0.04%, KOH0.05%, polyacrylic acid 0.01%.
This heat-transfer medium composition is a concentrated solution, according to the material system temperature requirement, is diluted with water to the different concns of 10%-60% (volume), uses in-0 ℃～-50 ℃ temperature range.Metal is not had the burn into non-scaling, never degenerates.
Embodiment 8 is diluted to the freezing point of different concns and the freezing point of corresponding concentration alcohol relatively sees Table 3.
The freezing point of embodiment 4 compositions and alcohol relatively during table 3 different concns (volume)
As can be seen from Table 3, the freezing point of embodiment 8 compositions is more much lower than the freezing point of same concentrations alcohol, and this explanation is done secondary refrigerant with simple alcohol and compared, and under same concentrations, composition of the present invention can use under lower temperature.This realizes this purpose, and is relevant with the proportioning of alcohol on the one hand, and an amount of on the other hand inhibitor that adds also has the effect that suppresses the component volatilization and reduce freezing point.
Claims (3)
1. an industry is used for the concentration heat transfer medium that metal has the corrosion protection antiscale, mainly is by C
1～C
4The concentrated solution that water-soluble alcohol and inhibitor are mixed with is characterized in that this heat-transfer medium is made up of the weight percent of following component:
C
1～C
4Water-soluble alcohol 91～99%
Inhibitor 0.9～9%
Scale inhibitors 0～0.05%
Industrial soda 0～0.05%
PH value 7～10.
2. according to the described heat-transfer medium of claim 1, it is characterized in that described C
1～C
4Water-soluble alcohol is selected for use in them one or more of methyl alcohol, ethanol, propyl alcohol, Virahol, ethylene glycol, propylene glycol, glycerol, Diethylene Glycol to mix and is used.
3. according to the described heat-transfer medium of claim 1, it is characterized in that described inhibitor selects for use in them one or more of phosphoric acid salt, silicate, nitrate, nitrite, borate, molybdate, benzoate, EDTA sodium salt to mix and use, the consumption of every kind of inhibitor is no more than 5% of heat-transfer medium gross weight.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100473960A CN101117570A (en) | 2006-08-02 | 2006-08-02 | Industrial concentration heat transfer medium |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100473960A CN101117570A (en) | 2006-08-02 | 2006-08-02 | Industrial concentration heat transfer medium |
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| Publication Number | Publication Date |
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| CN101117570A true CN101117570A (en) | 2008-02-06 |
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| CNA2006100473960A Pending CN101117570A (en) | 2006-08-02 | 2006-08-02 | Industrial concentration heat transfer medium |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101643640A (en) * | 2009-08-27 | 2010-02-10 | 慧恒世纪科技（北京）有限公司 | Heat exchange medium and heat conduction pipe using same |
| CN104419382A (en) * | 2013-08-23 | 2015-03-18 | 南通瑞鑫电子电器有限公司 | Insulation oil for granulation tower |
| CN106497525A (en) * | 2016-10-21 | 2017-03-15 | 过冬 | Anti-corrosion antifreeze liquid |
| CN107760277A (en) * | 2017-11-10 | 2018-03-06 | 苏州胜晓化工有限公司 | A kind of blue tree extract solution and preparation method thereof and a kind of refrigerating medium and preparation method thereof |
| CN108130055A (en) * | 2017-12-27 | 2018-06-08 | 佛山市顺德区施迈普电子科技有限公司 | A kind of Pluronic polyols water-free cooling and preparation method thereof |
| CN110330949A (en) * | 2019-07-29 | 2019-10-15 | 瑞祥新能源(深圳)有限责任公司 | A kind of low temperature resistant thermal conducting agent and its preparation method and application |
| CN110554138A (en) * | 2019-09-09 | 2019-12-10 | 中国电力科学研究院有限公司 | Acid value measuring system of oil products |
-
2006
- 2006-08-02 CN CNA2006100473960A patent/CN101117570A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101643640A (en) * | 2009-08-27 | 2010-02-10 | 慧恒世纪科技（北京）有限公司 | Heat exchange medium and heat conduction pipe using same |
| CN104419382A (en) * | 2013-08-23 | 2015-03-18 | 南通瑞鑫电子电器有限公司 | Insulation oil for granulation tower |
| CN106497525A (en) * | 2016-10-21 | 2017-03-15 | 过冬 | Anti-corrosion antifreeze liquid |
| CN107760277A (en) * | 2017-11-10 | 2018-03-06 | 苏州胜晓化工有限公司 | A kind of blue tree extract solution and preparation method thereof and a kind of refrigerating medium and preparation method thereof |
| CN108130055A (en) * | 2017-12-27 | 2018-06-08 | 佛山市顺德区施迈普电子科技有限公司 | A kind of Pluronic polyols water-free cooling and preparation method thereof |
| CN110330949A (en) * | 2019-07-29 | 2019-10-15 | 瑞祥新能源(深圳)有限责任公司 | A kind of low temperature resistant thermal conducting agent and its preparation method and application |
| CN110554138A (en) * | 2019-09-09 | 2019-12-10 | 中国电力科学研究院有限公司 | Acid value measuring system of oil products |
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Application publication date: 20080206 |