CN101691481A - Compound chloride-based environment-friendly snowmelt agent - Google Patents
Compound chloride-based environment-friendly snowmelt agent Download PDFInfo
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- CN101691481A CN101691481A CN200910210222A CN200910210222A CN101691481A CN 101691481 A CN101691481 A CN 101691481A CN 200910210222 A CN200910210222 A CN 200910210222A CN 200910210222 A CN200910210222 A CN 200910210222A CN 101691481 A CN101691481 A CN 101691481A
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- snow
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- environment protection
- sodium
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- 239000005413 snowmelt Substances 0.000 title claims abstract description 25
- -1 Compound chloride Chemical class 0.000 title claims abstract description 5
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 80
- 238000000034 method Methods 0.000 claims abstract description 15
- 239000000203 mixture Substances 0.000 claims abstract description 12
- LLSDKQJKOVVTOJ-UHFFFAOYSA-L calcium chloride dihydrate Chemical compound O.O.[Cl-].[Cl-].[Ca+2] LLSDKQJKOVVTOJ-UHFFFAOYSA-L 0.000 claims abstract description 11
- 229940050906 magnesium chloride hexahydrate Drugs 0.000 claims abstract description 11
- DHRRIBDTHFBPNG-UHFFFAOYSA-L magnesium dichloride hexahydrate Chemical compound O.O.O.O.O.O.[Mg+2].[Cl-].[Cl-] DHRRIBDTHFBPNG-UHFFFAOYSA-L 0.000 claims abstract description 11
- 150000003839 salts Chemical class 0.000 claims abstract description 7
- JLIDBLDQVAYHNE-YKALOCIXSA-N (+)-Abscisic acid Chemical compound OC(=O)/C=C(/C)\C=C\[C@@]1(O)C(C)=CC(=O)CC1(C)C JLIDBLDQVAYHNE-YKALOCIXSA-N 0.000 claims abstract description 6
- SEOVTRFCIGRIMH-UHFFFAOYSA-N indole-3-acetic acid Chemical compound C1=CC=C2C(CC(=O)O)=CNC2=C1 SEOVTRFCIGRIMH-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000004021 humic acid Substances 0.000 claims abstract description 5
- HELHAJAZNSDZJO-OLXYHTOASA-L sodium L-tartrate Chemical compound [Na+].[Na+].[O-]C(=O)[C@H](O)[C@@H](O)C([O-])=O HELHAJAZNSDZJO-OLXYHTOASA-L 0.000 claims abstract description 5
- 239000001433 sodium tartrate Substances 0.000 claims abstract description 5
- 229960002167 sodium tartrate Drugs 0.000 claims abstract description 5
- 235000011004 sodium tartrates Nutrition 0.000 claims abstract description 5
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 claims abstract description 4
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000004202 carbamide Substances 0.000 claims abstract description 4
- BNIILDVGGAEEIG-UHFFFAOYSA-L disodium hydrogen phosphate Chemical compound [Na+].[Na+].OP([O-])([O-])=O BNIILDVGGAEEIG-UHFFFAOYSA-L 0.000 claims abstract description 4
- 239000001509 sodium citrate Substances 0.000 claims abstract description 4
- 239000011246 composite particle Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 5
- 239000006185 dispersion Substances 0.000 claims description 4
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 229910000397 disodium phosphate Inorganic materials 0.000 claims description 3
- 235000019800 disodium phosphate Nutrition 0.000 claims description 3
- HRXKRNGNAMMEHJ-UHFFFAOYSA-K trisodium citrate Chemical compound [Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O HRXKRNGNAMMEHJ-UHFFFAOYSA-K 0.000 claims description 3
- 229940038773 trisodium citrate Drugs 0.000 claims description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical group C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 2
- 239000011591 potassium Substances 0.000 claims description 2
- 229910052700 potassium Inorganic materials 0.000 claims description 2
- 239000011734 sodium Substances 0.000 claims description 2
- 229910052708 sodium Inorganic materials 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 abstract description 12
- 239000002184 metal Substances 0.000 abstract description 12
- 239000000654 additive Substances 0.000 abstract description 11
- 230000008014 freezing Effects 0.000 abstract description 6
- 238000007710 freezing Methods 0.000 abstract description 6
- 239000002689 soil Substances 0.000 abstract description 6
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 abstract description 4
- 230000000996 additive effect Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 abstract description 3
- 150000001875 compounds Chemical class 0.000 abstract description 3
- 239000011248 coating agent Substances 0.000 abstract description 2
- 238000000576 coating method Methods 0.000 abstract description 2
- 239000011780 sodium chloride Substances 0.000 abstract description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract 1
- 239000004115 Sodium Silicate Substances 0.000 abstract 1
- 229940052299 calcium chloride dihydrate Drugs 0.000 abstract 1
- 238000000354 decomposition reaction Methods 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- FCRACOPGPMPSHN-UHFFFAOYSA-N desoxyabscisic acid Natural products OC(=O)C=C(C)C=CC1C(C)=CC(=O)CC1(C)C FCRACOPGPMPSHN-UHFFFAOYSA-N 0.000 abstract 1
- 238000005265 energy consumption Methods 0.000 abstract 1
- 239000008187 granular material Substances 0.000 abstract 1
- 239000003617 indole-3-acetic acid Substances 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 abstract 1
- 235000019795 sodium metasilicate Nutrition 0.000 abstract 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 abstract 1
- 229910052911 sodium silicate Inorganic materials 0.000 abstract 1
- 238000009736 wetting Methods 0.000 abstract 1
- DPDMMXDBJGCCQC-UHFFFAOYSA-N [Na].[Cl] Chemical compound [Na].[Cl] DPDMMXDBJGCCQC-UHFFFAOYSA-N 0.000 description 15
- 241000196324 Embryophyta Species 0.000 description 13
- 238000012360 testing method Methods 0.000 description 13
- 238000005260 corrosion Methods 0.000 description 12
- 230000007797 corrosion Effects 0.000 description 12
- 230000003628 erosive effect Effects 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 239000000243 solution Substances 0.000 description 8
- 229910000975 Carbon steel Inorganic materials 0.000 description 6
- 239000010962 carbon steel Substances 0.000 description 6
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 230000001186 cumulative effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000015784 hyperosmotic salinity response Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 239000001110 calcium chloride Substances 0.000 description 2
- 235000011148 calcium chloride Nutrition 0.000 description 2
- 229910001628 calcium chloride Inorganic materials 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000035784 germination Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000007226 seed germination Effects 0.000 description 2
- 230000003442 weekly effect Effects 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 1
- 240000002948 Ophiopogon intermedius Species 0.000 description 1
- 206010039203 Road traffic accident Diseases 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000007931 coated granule Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 229960002337 magnesium chloride Drugs 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 201000007094 prostatitis Diseases 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 239000001117 sulphuric acid Substances 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Landscapes
- Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to a compound chloride-based environment-friendly snowmelt agent, which comprises a main component of a chloride mixture of calcium chloride dihydrate and magnesium chloride hexahydrate, contains various additives of sodium citrate, disodium hydrogen phosphate, sodium metasilicate, urea and the like and can contain abscisic acid or indoleacetic acid or a mixture thereof, sodium tartrate, humic acid or a salt thereof. The snowmelt agent in the invention can reduce the corrosivity to a metal object and a concrete structure effectively, improves the anti-salinization capabilities of a seed, a plant and soil, can be used when the temperature is as low as -25 DEG C, and solves the problems of bad snow melting effect caused by an autologous freezing point characteristic when a sodium chloride-based snowmelt agent is used and high cost caused by using an anhydrous calcium chloride-based snowmelt agent under the condition. The invention also provides a use method of the snowmelt agent, which places the main component and each additive separately without preparing a finished product of the snowmelt agent in advance and compounds the snowmelt agent on the spot before using. The method can avoid the problems of wetting, hardening and the like of the finished product of the snowmelt agent in the processes of storing and transporting, can avoid the defects of high-temperature energy consumption in the process of preparing compound granules (such as coating and granulating) and the capability of causing decomposition of the additives, has simple operations and a low cost, and is particularly suitable for on-site mechanical shed work.
Description
Technical field
The present invention relates to a kind of environment protection snow-dissolved agent, is main component with the mixing villaumite of Calcium dichloride dihydrate and magnesium chloride hexahydrate, contains multiple additives simultaneously.
Background technology
The snowfall of winter-spring season and icing is made troubles often for city and communications and transportation, and is very easily caused traffic accident, and particularly motorway often because of snowfall and freezing sealing stoppage in transit, causes enormous economic loss to society.Use Snow Agent to remove road accumulated snow to have that cost is low, method is easy, ice and snow melts that speed is fast, traffic recovers fast advantage and extensively adopted by more and more countries institute.Quickening along with China's economic construction speed, China's motorway total kilometrage occupies prostatitis, the world, and be the fast-developing impetus, " national freeway net planning " is pointed out: 4.4 ten thousand kilometers on following China high speed highway yet to be built, China's motorway and economize the Class I highway total kilometrage and will reach 180,000 kilometers when the time comes is 90,000 kilometers one times more than in U.S. of present world motorway owning amount maximum.Yet because the usable floor area of China's Snow Agent is very limited, every year is very big because of the financial loss that ice and snow caused, low temperature sleet freezing weather has several times particularly appearred in recent years, attacked by four low temperature sleet freezing weather processes as the big portion of China at the beginning of 2008 especially southern area, range of influence relates to 2/3rds provinces, cities and autonomous regions, whole nation population suffered from disaster reaches more than 100,000,000, and direct economic loss reaches more than 1,500 hundred million yuan.
At present, there is tame Snow Agent more than 100 (containing industrial frostproofer) manufacturing enterprise in China, and the overwhelming majority is private small business, and these enterprise's production units and technology fall behind, more do not have technical research strength, and be raw material how with the villaumite, simply composite, kind is single, unstable product quality, and side effect is obvious.As using a class Snow Agent the most widely at present, villaumite has corrodibility to metal and concrete, and vegetation and soil are had hazardness, can greatly destroy highway foundation facility and highway periphery ecotope.For example, spring in 2005,8 cities, Beijing the withered situation of large quantities of vegetations occurred because of using sodium-chlor and calcium chloride as Snow Agent, more than 3,000 ten thousand yuan of direct economic losses.And for example, in anti-snow disaster relief process, highway maintenance department has used a large amount of Industrial Salts as Snow Agent in order to remove ice and snow on road surfaces as early as possible, and environment has been caused big disaster at the beginning of 2008.This negative effect also becomes influences the bottleneck problem that villaumite type Snow Agent is promoted.To this, some experts and scholar have proposed many pertinent suggestions based on environment protection to the use of Snow Agent.Suggestion according to pretty academician of Chinese Academy of Sciences's week, Premier Wen Jiabao makes comments and instructions and requires to strengthen to using the monitoring of Snow Agent to environmental influence, and propose the environment-friendly snowmelt agent that research and development have independent intellectual property right, thereby China's Snow Agent has been mentioned unprecedented height to the problem that influences of environment.
Current; purpose for environment protection; the domestic and international research staff development goes out diversified non-villaumite type Snow Agent product; but it is all former thereby can't promote the use of because of aspects such as cost and technology; cause and still use villaumite type Snow Agent at present both at home and abroad mostly, remain sodium-chlor and magnesium chloride as the snow melt material of the present usage quantity maximum of the U.S..Given this, developing a kind of is main component with the villaumite, but can effectively reduce the novel Snow Agent product to highway foundation facility and eco-environmental impact, has great importance and application and popularization value.
Summary of the invention
The invention provides a kind of compound chloride-based environment-friendly snowmelt agent, this Snow Agent manufacturing process is simple, produce quick, cost is low, and snow melt speed is fast, and the snow melt ability is strong, compare with existing Snow Agent, can significantly reduce corrosion, effectively control harm and pollution that villaumite causes seed, plant and soil, soil is had good improvement protective effect metal and concrete structure.
Described environment protection snow-dissolved agent is a main component with the mixing villaumite of Calcium dichloride dihydrate and magnesium chloride hexahydrate, contains multiple additives.It specifically contains following component:
Calcium dichloride dihydrate 30-55 weight %
Magnesium chloride hexahydrate 35-55 weight %
Trisodium Citrate 1-5 weight %
Sodium phosphate dibasic 0.5-3 weight %
Starso 0.5-2 weight %
Urea 1-5 weight %.
Preferably, described environment protection snow-dissolved agent also contains dormin, indolylacetic acid or its mixture, and its content is 0-0.04 weight %, preferred 0.02-0.04 weight %.
Preferably, described environment protection snow-dissolved agent also contains sodium tartrate, and its content is 0-3 weight %, preferred 2-3 weight %.
Preferably, described environment protection snow-dissolved agent also contains humic acid or its salt, and its content is 0-1 weight %, preferred 0.5-1 weight %, and described humate is sodium humate or potassium humate.
Except said components, Snow Agent of the present invention can also contain Snow Agent field other various supplementary additives commonly used.
Compare with the villaumite type Snow Agent of present use, Snow Agent of the present invention can effectively reduce the corrodibility to metal object and concrete structure, effectively improves the anti-salinization ability of seed, plant and soil.And owing to be that mixing villaumite with Calcium dichloride dihydrate and magnesium chloride hexahydrate is the Snow Agent main component, this Snow Agent also can be used when being low to moderate-25 ℃ at temperature, has solved to use sodium-chlor type Snow Agent because of self freezing point characteristic snow melt weak effect and the too high problem of use Calcium Chloride Powder Anhydrous type Snow Agent cost under this condition.
Snow Agent of the present invention can be used preparation method's preparation well known in the art; the commonly used blending method in this area or additive made coated granule or the like as the dressing composition for example, and the Snow Agent product of gained can use with usual manners such as composite particles or solution.
The present invention also provides a kind of new Snow Agent using method, it is characterized in that need not preparing in advance finished product, but the mixing villaumite and the various additive of Calcium dichloride dihydrate and magnesium chloride hexahydrate is placed apart, and is compound at building-site again before needing to use.Concrete steps are: the Calcium dichloride dihydrate and the magnesium chloride hexahydrate of described ratio are provided, and mix; The various additives of described ratio are provided, and mix; Mechanical dispersion is mixed the villaumite particle, simultaneously the form of mixed additive with the aqueous solution is sprayed on the particle, forms the Snow Agent composite particles; The gained composite particles is directly used.
This method can avoid the finished product Snow Agent to occur in storing and transporting as problems such as making moist, harden, also can avoid high temperature power consumption and the defective that may cause additives decompose in the process of preparation composite particles (for example coating pelletizing), this method is simple to operate, with low cost, be particularly suited for on-the-spot mechanize and shed operation.
Embodiment
Below will the present invention will be described in detail with specific embodiment, but these embodiment should be interpreted as limiting the scope of the invention.
(1) environment protection snow-dissolved agent prescription
Table 1 has been listed four kinds of representative formulations, and wherein said numerical value is meant the weight percent of each component in Snow Agent.
The environment protection snow-dissolved agent prescription of table 1
| Prescription is formed | Prescription 1 | Prescription 2 | Prescription 3 | Prescription 4 |
| Calcium dichloride dihydrate | ??47.24 | ??44.99 | ??53.08 | ??34.98 |
| Magnesium chloride hexahydrate | ??47.24 | ??44.99 | ??35.38 | ??52.48 |
| Sodium tartrate | ??0 | ??2 | ??0 | ??3 |
| Trisodium Citrate | ??3 | ??1 | ??5 | ??3 |
| Sodium phosphate dibasic | ??0.5 | ??3 | ??1 | ??2 |
| Starso | ??0.5 | ??1 | ??1.5 | ??1.5 |
| Urea | ??1 | ??2 | ??4 | ??3 |
| Dormin | ??0 | ??0.02 | ??0 | ??0.04 |
| Indolylacetic acid | ??0.02 | ??0 | ??0.04 | ??0 |
| Sodium salts humic acids | ??0.5 | ??1 | ??0 | ??0 |
(2) snow melt ability test
According to the provincial standard DB 11/T161-2002 of Beijing, above-mentioned four kinds of environment protection snow-dissolved agents are carried out snow melt ability determination test.Experimental technique is: Snow Agent is configured to the 0.2g/ml concentration of aqueous solution, gets 6ml (V
0), in thermostat container, pour in the ice cube cumulative volume (V of metering liquid behind the 30min under-10 ℃ of conditions into
Snow Agent), deduct Snow Agent solution 6ml (V
0), difference is ice-melt ability (representing the snow melt ability with the ice-melt ability) for the volume that melts water outlet, under equal conditions does the sodium-chlor simultaneous test, 90% of index request 〉=sodium-chlor snow melt ability.The results are shown in Table 2.
Table 2 snow melt ability test result
| Sequence number | Kind | Snow melt can force rate K (%) |
| ??1 | Prescription 1 | ??113 |
| ??2 | Prescription 2 | ??121 |
| ??3 | Prescription 3 | ??123 |
| ??4 | Prescription 4 | ??118 |
The snow melt of Snow Agent and sodium-chlor can force rate K=(V
Snow Agent-V
0)/(V
Sodium-chlor-V
0) * 100%, V in the formula
Snow AgentBe the cumulative volume of liquid that Snow Agent is melted, V
Sodium-chlorBe the cumulative volume of liquid that sodium-chlor melts, V
0Be Snow Agent or sodium chloride solution volume 6ml, the result keeps integer.
(3) metal corrosion of carbon steel test
According to GB GB/T 10124-1988, above-mentioned four kinds of environment protection snow-dissolved agents are carried out the test of metal corrosion of carbon steel, step is as follows:
A) get carbon steel metal sheet 50 * 25 * 2mm of punching (aperture is 3mm) in the middle of 5, soak 5min with 5% sulphuric acid soln, wash successively, alcohol flushing, acetone rinsing again, nitrogen blowing is carried out drying, be put into afterwards in the loft drier, be numbered, measure and weigh;
B) in five 2000ml beakers, add the 1000ml pure water respectively, in first beaker, add sodium-chlor 200g, add Snow Agent prescription 1, Snow Agent prescription 2, Snow Agent prescription 3 and Snow Agent prescription 4 each 200g in other four beakers respectively;
C) 5 carbon steel metal sheets are hung in the solution of five beakers with nylon rope respectively, the nylon rope the other end ties up on the glass stick, and with the glass stick frame the beaker mouth along on, make metal be in solution central authorities position on the lower side;
D) after the carbon steel metal sheet soaks 48h continuously in solution, be placed in the hydrochloric acid of 3% concentration and soak 10min, take out the back and brush surperficial residual rust with brush, successively with alcohol, acetone rinsing, nitrogen blowing carries out being put in the loft drier after the drying, weighs one by one more again;
E) corrosion mitigating effect evaluation.
Test-results sees Table 3.
Table 3 metal corrosion of carbon steel test-results
| Sequence number | Kind | Initial mass M (g) | Erosion back mass M 1(g) | Corrosion inhibitor quality (g) | Erosion rate R (mm/a) | Corrosion ratio (%) * |
| ??1 | Sodium-chlor | ??19.9862 | ??19.923 | ??0.0632 | ??0.5247 | ??- |
| ??2 | Prescription 1 | ??19.5867 | ??19.578??2 | ??0.0085 | ??0.0706 | ??13.45 |
| ??3 | Prescription 2 | ??19.5713 | ??19.567??1 | ??0.0042 | ??0.0349 | ??6.65 |
| ??4 | Prescription 3 | ??20.6539 | ??20.648??5 | ??0.0054 | ??0.0448 | ??8.55 |
| Sequence number | Kind | Initial mass M (g) | Erosion back mass M 1(g) | Corrosion inhibitor quality (g) | Erosion rate R (mm/a) | Corrosion ratio (%) * |
| ??5 | Prescription 4 | ??19.2656 | ??19.262??7 | ??0.0029 | ??0.0241 | ??4.59 |
The erosion rate of * corroding ratio (%) and be with sodium-chlor is 100%
Erosion rate R=[8760 * (M-M1)] ÷ STD * 10
S represents surface-area in the formula, and standard test piece numerical value is 28cm
2T represents soak time, and numerical value is 48h; D represents density, and numerical value is 7.85g/cm
38760 is the hourss in 1 year; The 10th, the unit conversion coefficient.
(4) concrete erosion test
With reference to U.S. ASTM designation C672-84 method, above-mentioned four kinds of environment protection snow-dissolved agents are carried out the concrete erosion test.Test method is: (100 * 100 * 100mm) are immersed in the Snow Agent solution of 3% concentration the concrete blocks that will rest, freezing 16h under-20 ℃ the environment, the thawing process at room temperature continues 8h, carried out repeatedly 50 days, Snow Agent solution is changed once weekly, and the weight of weighing concrete blocks, calculates the concrete erosion rate according to mass loss, calculate the corrosion ratio with the sodium-chlor contrast again, test-results sees Table 4.
Table 4 concrete erosion test-results
| Sequence number | Kind | Concrete erosion rate (%) | Corrosion ratio (%) * |
| ??1 | Sodium-chlor | ??6.15 | ??- |
| ??2 | Prescription 1 | ??1.13 | ??18.37 |
| ??3 | Prescription 2 | ??1.02 | ??16.58 |
| ??4 | Prescription 3 | ??0.85 | ??13.82 |
| ??5 | Prescription 4 | ??0.54 | ??8.78 |
* the corrosion rate that corrodes ratio (%) and be with sodium-chlor is 100%
(5) plant salt tolerance test
According to the provincial standard DB 11/T161-2002 of Beijing, above-mentioned four kinds of environment protection snow-dissolved agents are carried out the plant salt tolerance test.Test method is: 2m is marked as estimating herbaceous plant in the use lawn tuber of dwarf lilyturf
2* 5, each dosage 10g/m
2, weekly, the accumulation sprinkling amount before the phenomenon that occurs being injured is the salt tolerant amount, with g/m
2Expression, test-results sees Table 5.
Table 5 plant salt tolerance test-results
| Sequence number | Kind | Salt tolerant amount (g/m 2) |
| ??1 | Sodium-chlor | ??60 |
| ??2 | Prescription 1 | ??230 |
| ??3 | Prescription 2 | ??400 |
| ??4 | Prescription 3 | ??320 |
| ??5 | Prescription 4 | ??430 |
(6) the plant seed rate of being injured relatively detects test
Above-mentioned four kinds of environment protection snow-dissolved agents are carried out the plant seed rate of being injured relatively detect test.Test method is: with the English grass seed after 10% superoxol soaks 5min, use 40 ℃ of warm water soaking 15min again, choose 100 * 5 seeds that uniform particles is full, put into the germination box, Snow Agent solution-wet seed and absorbent cotton with 5g/L concentration, cover the germination box cover, in 20 ℃ of constant incubators, cultivate, and in time add water to keep seed moistening, record seed germination quantity after 12 days, do controlled trial with distilled water, plant seed is injured rate≤70% relatively for criterion, and test-results sees Table 6.
The table 6 plant seed rate test-results of being injured relatively
| Sequence number | Kind | The plant seed rate RR (%) that is injured relatively |
| ??1 | Prescription 1 | ??32 |
| ??2 | Prescription 2 | ??18 |
| ??3 | Prescription 3 | ??19 |
| ??4 | Prescription 4 | ??12 |
Plant seed germination rate R=A/N * 100%, A is a number of shoots in the formula, and N is for cultivating seed number, and numerical value is 100;
The plant seed rate RR=(R that is injured relatively
Contrast-R
Snow Agent)/R
Contrast* 100%, R in the formula
ContrastBe the rate of emergence of handling with distilled water, R
Snow AgentBe the rate of emergence of handling with Snow Agent, the result keeps integer.
Comprehensive above-mentioned every index as can be seen, Snow Agent snow melt ability of the present invention is strong, to metal and concrete corrodibility and very little to the harm of peripheral vegetation and soil, is a kind of Snow Agent of very high-efficiency environment friendly.
Claims (9)
1. a compound chloride-based environment-friendly snowmelt agent is characterized in that, contains following component:
Calcium dichloride dihydrate 30-55 weight %
Magnesium chloride hexahydrate 35-55 weight %
Trisodium Citrate 1-5 weight %
Sodium phosphate dibasic 0.5-3 weight %
Starso 0.5-2 weight %
Urea 1-5 weight %.
2. environment protection snow-dissolved agent according to claim 1 is characterized in that: also contain dormin, indolylacetic acid or its mixture, its content is 0-0.04 weight %.
3. environment protection snow-dissolved agent according to claim 2 is characterized in that: the content of dormin, indolylacetic acid or its mixture is 0.02-0.04 weight %.
4. according to each described environment protection snow-dissolved agent among the claim 1-3, it is characterized in that: also contain sodium tartrate, its content is 0-3 weight %.
5. environment protection snow-dissolved agent according to claim 4 is characterized in that: the content of sodium tartrate is 2-3 weight %.
6. according to each described environment protection snow-dissolved agent among the claim 1-5, it is characterized in that: also contain humic acid or its salt, its content is 0-1 weight %, and described humate is sodium humate or potassium humate.
7. environment protection snow-dissolved agent according to claim 6 is characterized in that: the content of humic acid or its salt is 0.5-1 weight %.
8. the using method of each described environment protection snow-dissolved agent among the claim 1-7 may further comprise the steps:
(1) provides the Calcium dichloride dihydrate and the magnesium chloride hexahydrate of described ratio, and mix;
(2) provide other component except that Calcium dichloride dihydrate and magnesium chloride hexahydrate of described ratio, and mix;
(3) the mixing villaumite particle that obtains in the mechanical dispersion step (1) is sprayed at the composition that obtains in the step (2) form with the aqueous solution on the villaumite particle simultaneously, forms the Snow Agent composite particles;
(4) the gained composite particles is directly used.
9. using method according to claim 8 is characterized in that: mechanical dispersion described in the step (3) is for stirring or vibrating dispersion.
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| CN2009102102225A CN101691481B (en) | 2009-10-28 | 2009-10-28 | Compound chloride-based environment-friendly snowmelt agent |
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| CN2009102102225A CN101691481B (en) | 2009-10-28 | 2009-10-28 | Compound chloride-based environment-friendly snowmelt agent |
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|---|---|---|---|
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