CN101899287A - Solar energy collector tube heat conduction liquid - Google Patents

Solar energy collector tube heat conduction liquid Download PDF

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Publication number
CN101899287A
CN101899287A CN2010102284796A CN201010228479A CN101899287A CN 101899287 A CN101899287 A CN 101899287A CN 2010102284796 A CN2010102284796 A CN 2010102284796A CN 201010228479 A CN201010228479 A CN 201010228479A CN 101899287 A CN101899287 A CN 101899287A
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acid
molybdate
heat conduction
solar energy
sodium
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CN2010102284796A
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CN101899287B (en
Inventor
张凯蛟
李万英
朱志国
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China Petroleum and Chemical Corp
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China Petroleum and Chemical Corp
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Abstract

The invention relates to a solar energy collector tube heat conduction liquid which is characterized in that the solar energy collector tube heat conduction liquid is formed by mixing and stirring sodium metasilic, silicate stabilizing agent, molybdate, borax naphthenic base carboxylic acid, imidazoles compound, aliphatic series monoacid, aliphatic series diacid, 1,2 propylene glycol or 1,3 propylene glycol. The product can better protect various non-ferrous metals at high temperature for a long period, has small toxicity and does not seriously harm human body even if the heat conduction liquid leaks.

Description

Solar energy collector tube heat conduction liquid
Technical field
The present invention relates to a kind of collector tube heat conduction liquid, especially for solar energy system collector tube heat conduction medium solar energy collector tube heat conduction liquid.
Background technology
In today of global energy situation anxiety, global warming serious threat Economic development and people's life health, countries in the world all seeking new energy substitution product, obtain superiority in the hope of Sustainable development with in development in the future.Development and use sun power be exactly the inexhaustible new forms of energy that the whole world is paid much attention to, it with its cleaning, continually, safety etc. significant advantage become focal point.China has formed industrialization at heat collector, solar water heater at present.The thermal utilization switch technology of solar water heater is the most sophisticated beyond doubt.But the heat-conducting medium that in solar energy system, uses, generally all using the glycol/water mixtures automobile engine cooling liquid, because solar energy system is under the intensive sunlight for a long time, the high temperature that ethylene glycol occurs under the situation that system does not move be have very much corrosive, various metals may appear for example: copper in solar energy system, brass, steel, cast iron, plumbous, tin, aluminium, the corrosion of magnesium etc. and alloy thereof, and automobile engine cooling liquid makes spent glycol as falling the freezing point agent more, but ethylene glycol has suitable toxicity, in the hot water that collection ripe pipe generation corrosion ethylene glycol enters heat-exchange system, human body is worked the mischief, therefore have potential safety hazard.
Summary of the invention
Purpose of the present invention just for overcome shortcoming that above-mentioned prior art exists with not enough and provide a kind of can be in solar energy system under hot environment life-time service, and the solar energy collector tube heat conduction liquid that also can not cause hazard to person appears revealing, thereby can stop the generation of potential safety hazard, can prevent the corrosion of thermal-collecting tube again, improve work-ing life.
The objective of the invention is to realize by following technical proposal:
Solar energy collector tube heat conduction liquid, it be by the following weight proportion raw material through mixing together,
0.01~0.5 part of non-hydrate sodium metasilicate
0.01~0.5 part of water glass stablizer
0.10~5.0 part of borax
0.05~0.5 part of molybdate
0.10~3.0 part of cycloalkyl carboxylic acid
0.01~0.3 part of azole compounds
0.10~3.0 part in aliphatics monoprotic acid
0.10~3.0 part of aliphatic dibasic acid
90.0~95.0 parts of 1,2 propylene glycol or 1,3 propylene glycol,
Described water glass stablizer is 3-(trihydroxy methyl siloxanes)-propyl-phosplate phosphoric acid salt, 2-(sodium-sulfophenyl) ethylsiloxane, 3-(sodium sulfonate) propyl-siloxane, 3-sodium sulfonate-2-hydroxyl-propoxy-) propyl-siloxane or (2,3-dihydroxyl propoxy-) propyl-siloxane;
Described molybdate is ammonium molybdate, Sodium orthomolybdate, potassium molybdate, lithium molybdate, phosphato-molybdic heteropolyacid salt, tungsten heteropolyacid salt or silicon-molybdenum heteropoly acid salt;
Described cycloalkyl carboxylic acid is cyclopentyl formic acid, NSC 60134, cyclopentanepropanoiacid acid, cyclopentyl butyric acid, hexahydrobenzoic acid, cyclohexyl acetic acid, cyclohexylpropionic acid or cyclohexyl butyric acid;
Described azole compounds is benzotriazole, toluene a pair of horses going side by side triazole, 2-mercapto benzothiazole sodium, aphthotriazoles or 1-phenyl-5-mercapto tetrazole;
Described aliphatics monoprotic acid is caproic acid, 2 Ethylbutanoic acid, enanthic acid, sad, n-nonanoic acid, capric acid or lauric acid;
Described aliphatic dibasic acid is Succinic Acid, pentanedioic acid, hexanodioic acid, pimelic acid, sebacic acid, 11 carbon dicarboxylic acids, SL-AH, ten four-carbon dicarboxylic acids or dodecenyl succinic Succinic Acid.
The raw material that product of the present invention adopted is with 1,2 propylene glycol or 1,3 propylene glycol are that base-material and multiple inhibiter are formed, and wherein: non-hydrate sodium metasilicate is the inorganic salt inhibiter, aluminium and aluminium alloy are had fabulous corrosion inhibition, and other non-ferrous metals are also had good corrosion inhibition.
Aliphatics monoprotic acid and aliphatic dibasic acid carboxylic acid inhibiter be composite synergy, effectively utilizes synergy can realize with less inhibiter consumption acquisition better protecting effect, the price of enhancing product performance ratio; The water glass stablizer can be by being attracted to the water glass colloidal grain surface, prevent the effective collision of water glass colloidal solid by electrostatic interaction and sterically hindered effect, the water glass gel polymerisation body of irreversible non-solubility appears in containment, by the water glass colloidal solid being controlled at the solubility of nano level maintenance water glass colloidal solid, contain thereby effectively the water glass gel is separated out; Cycloalkyl carboxylic acid and aliphatics monoprotic acid and aliphatic dibasic acid are composite can be in the corrosion of the long-time good restraining scolding tin in the hot metal surface of solar energy heat collection pipe, aluminium parts; Azole compounds is used for suppressing the high temperature corrosion of solar energy heat collection pipe copper part, and especially aphthotriazoles, 1-phenyl-5-mercapto tetrazole have better oxidation-resistance property; Borax, molybdate have good shock-absorbing capacity; 1,2 propylene glycol or 1,3 propylene glycol have the corrosion inhibition of better scolding tin, aluminium parts, promptly be to have the anti-antifreeze base fluid that boils, and also be inhibiter simultaneously, and toxicity to be far smaller than ethylene glycol.
Product of the present invention has carried out multiple corrosion experiment, comprises glass corrosion test, simulative corrosion test, cast copper corrosion test, cast aluminium corrosion test, the test of aluminium pump cavitation corrosion.Wherein the condition of glass corrosion test is higher than the SH/T0521 standard and carries out, and mark Huaihe River condition is: 88 ℃, 336 hours, 33% concentrated solution concentration, and test conditions is: 98 ℃, 20% concentration, 720 hours; The test conditions of simulative corrosion test is higher than the SH/T0521 standard to carry out, and mark Huaihe River condition is: 88 ℃, 1000 hours, 33% concentrated solution concentration; Test conditions is: 98 ℃, 20% concentration, 3000 hours, increase the cast copper, the cast aluminium corrosion test that do not have in the SH/T0521 standard simultaneously, cast copper corrosion test condition is 145 ℃, 168 hours: cast aluminium corrosion test condition is: 145 ℃, and 168 hours, also carried out the test of aluminium pump cavitation corrosion, test-results is shown in Table 1.
Table 1 test-results
Test-results shows: the glass corrosion test-results of solar energy collector tube heat conduction liquid of the present invention reaches and is higher than the SH/T0521 standard, reaches 98 ℃, 20% concentrated solution concentration, 720 hours; The simulative corrosion test result reaches and is higher than the SH/T0521 standard, reaches 98 ℃, 20% concentrated solution concentration 3000 hours; Cast copper cast aluminium corrosion test test-results all reaches 145 ℃, 168 hours; Test-results will be higher than harsh in engine coolant and other solar energy heat conducting liquid far away; the test of aluminium pump cavitation corrosion also reaches 10 grades; therefore can illustrate that product of the present invention can carry out macrocyclic protection to various non-ferrous metals on the hot metal surface; its toxicity is less than ethylene glycol; can not cause serious injury even take place to reveal yet, further prove its reliability and advance human body.
Since take technique scheme make the technology of the present invention compared with the prior art this product have under hot conditions and can well carry out macrocyclic protection various non-ferrous metals; its toxicity is little, even take place to reveal also not the advantage and the effect that can cause serious injury to human body.
Embodiment
Embodiment 1
Get non-hydrate sodium metasilicate 0.01kg, 3-(sodium sulfonate) propyl-siloxane 0.01kg, borax 5.0kg, ammonium molybdate 0.05kg, cyclopentyl formic acid 3.0kg, benzotriazole 0.01kg, 2 Ethylbutanoic acid 3.0kg, Succinic Acid or hexanodioic acid 0.10kg and 1,2 propylene glycol 90kg, through mixing together product, the glass corrosion test-results reaches and is higher than the SH/T0521 standard.
Embodiment 2
Get non-hydrate sodium metasilicate 0.1kg, 2-(sodium-sulfophenyl) ethylsiloxane 0.2kg, borax 3.0kg, potassium molybdate or Sodium orthomolybdate 0.1kg, cyclopentanepropanoiacid acid 2.0kg, toluene a pair of horses going side by side triazole 0.08kg, caproic acid 2.0kg, 11 carbon dicarboxylic acid 1.0kg and 1,3 propylene glycol 91kg, through mixing together product, the glass corrosion test-results reaches and is higher than the SH/T0521 standard.
Embodiment 3
Get non-hydrate sodium metasilicate 0.3kg, 3-(trihydroxy methyl siloxanes)-propyl-phosplate phosphoric acid salt 0.4kg, borax 1.0kg, phosphato-molybdic heteropolyacid salt 0.2kg, NSC 60134 1.0kg, 2-mercapto benzothiazole sodium 0.1kg, lauric acid 1.0kg, dodecenyl succinic Succinic Acid 2.0kg and 1,2 propylene glycol 93kg, through mixing together product, the glass corrosion test-results reaches and is higher than the SH/T0521 standard.
Embodiment 4
Get non-hydrate sodium metasilicate 0.5kg, (2,3-dihydroxyl propoxy-) propyl-siloxane 0.5kg, borax 0.1kg, silicon-molybdenum heteropoly acid salt 0.5kg, cyclohexyl butyric acid 0.1kg, 1-phenyl-5-mercapto tetrazole 0.3kg, n-nonanoic acid 0.1kg, sebacic acid 3.0kg and 1,3 propylene glycol 95.0kg, through mixing together product, the glass corrosion test-results reaches and is higher than the SH/T0521 standard.
Embodiment 5
Get non-hydrate sodium metasilicate 0.4kg, 3-sodium sulfonate-2-hydroxyl-propoxy-) propyl-siloxane 0.3kg, borax 2.0kg, tungsten heteropolyacid salt 0.3kg, cyclohexylpropionic acid 1.5kg, aphthotriazoles 0.2kg, enanthic acid or sad 0.5kg, pentanedioic acid 1.5kg and 1,3 propylene glycol 92.0kg, through mixing together product, the glass corrosion test-results reaches and is higher than the SH/T0521 standard.
Embodiment 6
Get non-hydrate sodium metasilicate 0.05kg, 3-sodium sulfonate-2-hydroxyl-propoxy-) propyl-siloxane 0.1kg, borax 2.0kg, lithium molybdate 0.4kg, cyclopentyl butyric acid or hexahydrobenzoic acid 2.5kg, aphthotriazoles 1.5kg, capric acid 1.5kg, hexanodioic acid 0.5kg and 1,3 propylene glycol 93.0kg, through mixing together product, the glass corrosion test-results reaches and is higher than the SH/T0521 standard.

Claims (1)

1. solar energy collector tube heat conduction liquid, it is characterized in that it be by the following weight proportion raw material through mixing together,
0.01~0.5 part of non-hydrate sodium metasilicate
0.01~0.5 part of silicate stabilizers
0.10~5.0 part of borax
0.05~0.5 part of molybdate
0.10~3.0 part of cycloalkyl carboxylic acid
0.01~0.3 part of azole compounds
0.10~3.0 part in aliphatics monoprotic acid
0.10~3.0 part of aliphatic dibasic acid
90.0~95.0 parts of 1,2 propylene glycol or 1,3 propylene glycol,
Described silicate stabilizers is 3-(trihydroxy methyl siloxanes)-propyl-phosplate phosphoric acid salt, 2-(sodium-sulfophenyl) ethylsiloxane, 3-(sodium sulfonate) propyl-siloxane, 3-sodium sulfonate-2-hydroxyl-propoxy-) propyl-siloxane or (2,3-dihydroxyl propoxy-) propyl-siloxane;
Described molybdate is ammonium molybdate, Sodium orthomolybdate, potassium molybdate, lithium molybdate, phosphato-molybdic heteropolyacid salt, tungsten heteropolyacid salt or silicon-molybdenum heteropoly acid salt;
Described cycloalkyl carboxylic acid is cyclopentyl formic acid, NSC 60134, cyclopentanepropanoiacid acid, cyclopentyl butyric acid, hexahydrobenzoic acid, cyclohexyl acetic acid, cyclohexylpropionic acid or cyclohexyl butyric acid;
Described azole compounds is benzotriazole, toluene a pair of horses going side by side triazole, 2-mercapto benzothiazole sodium, aphthotriazoles or 1-phenyl-5-mercapto tetrazole;
Described aliphatics monoprotic acid is caproic acid, 2 Ethylbutanoic acid, enanthic acid, sad, n-nonanoic acid, capric acid or lauric acid;
Described aliphatic dibasic acid is Succinic Acid, pentanedioic acid, hexanodioic acid, pimelic acid, sebacic acid, 11 carbon dicarboxylic acids, SL-AH, ten four-carbon dicarboxylic acids or dodecenyl succinic Succinic Acid.
CN201010228479.6A 2010-07-16 2010-07-16 Solar energy collector tube heat conduction liquid Active CN101899287B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104110668A (en) * 2014-07-21 2014-10-22 程新明 Nanometer physicochemical vapor generator
CN106010470A (en) * 2016-05-17 2016-10-12 张家港迪克汽车化学品有限公司 Solar heat-conducting liquid
CN109666458A (en) * 2017-10-17 2019-04-23 中国石油化工股份有限公司 A kind of siliceous organic engine cooling liquid and its application
CN111100607A (en) * 2018-10-26 2020-05-05 中国石油化工股份有限公司 Solar heat-conducting liquid for providing gas-phase rust prevention protection and preparation method and application thereof

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10122769A1 (en) * 2001-05-10 2002-11-14 Basf Ag Antifreeze concentrates containing the dye C.I. Reactive Violet 5

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104110668A (en) * 2014-07-21 2014-10-22 程新明 Nanometer physicochemical vapor generator
CN106010470A (en) * 2016-05-17 2016-10-12 张家港迪克汽车化学品有限公司 Solar heat-conducting liquid
CN109666458A (en) * 2017-10-17 2019-04-23 中国石油化工股份有限公司 A kind of siliceous organic engine cooling liquid and its application
CN111100607A (en) * 2018-10-26 2020-05-05 中国石油化工股份有限公司 Solar heat-conducting liquid for providing gas-phase rust prevention protection and preparation method and application thereof

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