CN103820081A - Snow-melting agent - Google Patents
Snow-melting agent Download PDFInfo
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- CN103820081A CN103820081A CN201410071987.6A CN201410071987A CN103820081A CN 103820081 A CN103820081 A CN 103820081A CN 201410071987 A CN201410071987 A CN 201410071987A CN 103820081 A CN103820081 A CN 103820081A
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Abstract
The invention discloses a snow-melting agent. The snow-melting agent comprises following components by weight: 30-60% of low-molecular organic polyol, 0.8-1.2% of triethanolamine, 0.1-1% of a metal ion chelate or salts thereof, 0.2-0.4% of sodium metasilicate, 0.1-1% of benzotriazole, 0.2-0.5% of sodium dihydrogen phosphate, and 30-70% of water. The snow-melting agent adopts a formula combining an organic phase and an inorganic phase, and comprises a mixture of two or three compounds selected from glycol, propylene glycol and ethanol, and a composite corrosion inhibitor including the water, the triethanolamine, the metal ion chelate or the salts thereof, the sodium metasilicate, the benzotriazole and the sodium dihydrogen phosphate. The freezing point of the snow-melting agent is below -40 DEG C, and the snow-melting agent has significant ice and snow melting effects.
Description
Technical field
The present invention relates to Snow Agent field.
Background technology
Track switch is the important component part of railway station transportation equipment, in the time of Winter Snow, when particularly snow is larger, as cleaned not in time track switch accumulated snow or cleaning not thorough, easily cause point tongue most advanced and sophisticated not closely connected with stock rail, by directly affecting the sending and receiving operation of train, even cause the interruption of transportation by railroad.
In order to solve the freezing of snow day track switch, accumulated snow problem, all carried out a large amount of research both at home and abroad, railroad switch snow removal mainly contains following several mode: electrothermic type, gas heating type, hot air type, compressed air type, blowtorch heating-type, warm water jet-type, Warm water circulation formula and Snow Agent.But because 1. electrothermic type railroad switch snow removal system power consumption is larger, bring the problems such as power expansion in large standing-meeting, the cost budgeting management that uses department is brought to pressure simultaneously; 2. wind-force railroad switch snow removal system, in dust storm larger area, air path pipeline is easily blocked by sand, and pressurized air contain moisture make winter pipeline freeze, cause maintenance of the equipment complexity, reliability is lower; Although 3. hot water nozzle-type device for melting snow effect is better, should not use in the area of the special severe cold of weather, may cause rail to freeze; 4. Snow Agent is easy to promote the use of AT STATION as one snow melt mode easily, can reduce staff's labour intensity simultaneously.
In conjunction with practical situation, area, Inner Mongol dust storm is larger, winter severe cold, temperature is lower, and Snow Agent can be used as one snow melt mode easily track switch is removed the snow, and is easy to station in my office's pipe and promotes the use of, reduce staff's labour intensity simultaneously, effectively solved melting snow on turnout junction problem in winter.Snow Agent freezing point can reach-30 ℃～-50 ℃, can make ice and snow melt rapidly, snow-broth after thawing is lower than the freezing point of water, has a long period (the longest reach 12 hours) to prevent the ability that ice and snow is assembled, thereby can make track switch not freeze, not affect the closely connected of track switch.Therefore melting snow on turnout junction agent has broad application prospects.
At present, Snow Agent is mainly used in airport in winter, highway, square, parking lot, railway, avenue etc. and plays melting ice and snow and antifreeze effect, and its composition is broadly divided into three classes by its chemical constitution: (1) villaumite type Snow Agent.For example, take salts such as sodium-chlor, calcium chloride, magnesium chlorides as main Snow Agent.This type of Snow Agent price is relatively cheap, and spreading method is simple, quick, efficient, can meet the requirement of rapid alleviation traffic after snow, by last century countries in the world be widely used; (2) non-villaumite type Snow Agent (comprising organic or inorganic salt, amine, alcohols).The development of environment-friendly snowmelt agent is had to certain achievement both at home and abroad.DOT company of the U.S. utilizes the cellulose waste in municipal wastes and has developed calcium magnesium acetate deicing agent containing the Wingdale of magnesiumcarbonate; Its raw material of LMWBL deicing agent of United States Patent (USP) inventor Terence.E.peel development is to adopt sodium carbonate to produce as the kraft pulp of pulping chemical the black liquor making, this class deicing salt on environment harm is little, there is very high environment protection significance, but because its price is higher, the only application among a small circle such as on airport; (3) mixed type Snow Agent, i.e. fluid organic material+rust inhibitor.For example existing Snow Agent is parent by ethylene glycol or propyleneglycoles mostly, wherein adds inhibiter.The experiment proved that result of use is fine on airfield runway, very effective to the snowfall below 5cm, and can prevent that snow melt from forming nilas.Although this type of Snow Agent is lower than pure villaumite type Snow Agent in snow melt effect, it has good rust prevention function, is developed by people as novel Snow Agent.
Along with being widely used of the first chloride salt Snow Agent, because existing Snow Agent contains a large amount of sodium-chlor, its excessive use can cause afforestation vegetation mortality, and highway, bridge concrete road surface cause heavy corrosion to destroy.Mixed into behind the snow melt infiltration earth's surface of Snow Agent, also can be polluted rivers, underground water, destroyed ecotope.Along with the enhancing of Environmental Protection in China consciousness, the harm after chloride salt snow melt, metal, concrete and surrounding plants being caused is more and more valued by the people, and therefore, does not use chloride salt snow melt, but take the measure of road closure after much motorway snow.The non-villaumite type of Equations of The Second Kind deicing salt on environment harm is little, has very high environment protection significance, but because its price is higher, the only application among a small circle such as on airport.
And for the 3rd class mixed type Snow Agent, i.e. fluid organic material+rust inhibitor type Snow Agent, its mother liquor composition is comparatively single on the one hand, and the type Snow Agent selects a kind of organic alcohols as mother liquor mostly; The composition of existing inhibiter is with toxicity to a certain degree on the other hand, and as being a kind of carcinogens as the nitrite of inhibiter, labour hygiene department regulation can not be used; Silicate is pretty good, and therefore third generation Snow Agent inhibiter is take silicate as main component in the world, but that silicate dissolves in the aqueous solution is unstable, must be simultaneously with the stablizer of silicate, and life-time service is still undesirable; Molybdate expensive, is seldom used in actual applications.After dissolving, this class inhibiter through often causing burn into pollute to soil, road surface or other object contact faces, even has influence on human and animal's existence.Snow Agent is widely used in the snow removing such as highway, airport at present, but does not find the Snow Agent that is applied to railway switch aspect.Therefore, need badly and produce low, the stable performance of a kind of cost, corrosion-resistant, nontoxic, tasteless, convenient production, be convenient to that operation is implemented and the Snow Agent that meets environmental requirement becomes the task of top priority.
Summary of the invention
The shortcoming that all kinds of Snow Agent that this research is sold for current market exist, and on the basis of the domestic and foreign literature with reference to a large amount of, determine using multiple low molecule organic multicomponent alcohol mixture as Snow Agent mother liquor, the mode that inhibiter mutually combines with organism and inorganics is optimized formula.Through a large amount of formula screening operation, find out gradually that a kind of cost is low, stable performance, corrosion-resistant, nontoxic, tasteless, convenient production, be convenient to operation and implement and meet the Snow Agent optimization of C/C composites of environmental requirement.
Its main ingredient is low molecule organic polyhydric alcohol, water, composite corrosion inhibitor by organic-inorganic compositions of mixtures.Wherein:
1, low molecule organic polyhydric alcohol is selected one or both alcohol in ethylene glycol, propylene glycol, follow preferably, and the mixture that they and ethanol combine, most preferably, the combination of ethylene glycol+ethanol.
2. water: the deionized water that can be selected from water, distilled water, different grades all can;
3. composite corrosion inhibitor: comprise trolamine, chelate of metal ion or its esters, Starso, benzotriazole, SODIUM PHOSPHATE, MONOBASIC.
The effect of each component in this Snow Agent
1. select the effect of low molecule organic polyhydric alcohol: ethylene glycol boiling point is high, volatility is little, modest viscosity and vary with temperature littlely, and Heat stability is good, is desirable Snow Agent mother liquor.Add a certain amount of ethanol, make to have increased in this Snow Agent many hydrogen bonds, thereby improved its boiling point, also greatly reduce its freezing point.
2. the effect of trolamine: there is good antiseptic and rustproof effect, be difficult for producing precipitation and fouling simultaneously.
3. the effect of chelate of metal ion or its esters: can effectively eliminate corrosion, guarantee that Snow Agent liquid is not by dirt.
4. the effect of Starso: because silicate material very easily forms colloidality structure, and metasilicate has good stability and good Corrosion Protection.
5. the effect of benzotriazole: improve the heat conduction velocity of Snow Agent and metal, and can slow down the growing amount of rust deposite, weaken the decline of pH value, it also has good preservative effect simultaneously.
6. the effect of SODIUM PHOSPHATE, MONOBASIC: be long-effective corrosion agent and pH value buffer reagent, and also cheap, reduce costs.
We have selected the mode being combined by gas chromatography, inorganics to form the composite corrosion inhibitor of this Snow Agent.This kind of composite corrosion inhibitor can prevent that the mechanical effect that chemical reaction produces from destroying, and can prevent that again galvanic corrosion from destroying, and various composition has synergistic effect, the composite protection film of formation, and existing passive film has again adsorption film, has reached the object of multilayer protection.This composite corrosion inhibitor all provides good corrosion inhibition provide protection to cast iron, brass and aluminium.Can reach the freezing point below-40 ℃ through this Snow Agent of measuring, modest viscosity, Heat stability is good, environmentally safe, mildew-resistant, longer without particular requirement, storage period to water quality, can stick track switch better, is applicable to the use of extremely frigid zones environment.
The composition of formula
In Snow Agent, each component proportion is as follows:
Low molecule organic polyhydric alcohol: 30-60%(preferably, adds ethanol: 1-2%, low molecule organic polyhydric alcohol is selected one or both alcohol in ethylene glycol, propylene glycol, follow preferably, the mixture that they and ethanol combine, most preferably, the combination of ethylene glycol+ethanol)
Trolamine: 0.8-1.2%
Chelate of metal ion or its esters: 0.1-1%
Starso: 0.2-0.4%
Benzotriazole: 0.1-1%
SODIUM PHOSPHATE, MONOBASIC: 0.2-0.5%
Water: 30%-70%
With respect to traditional inorganic salt Snow Agent, this Snow Agent adopts the organic and inorganic formula that combines, by the mixture of two or three alcohol in ethylene glycol, propylene glycol, ethanol, water and the composite corrosion inhibitor being made up of trolamine, chelate of metal ion or its esters, Starso, benzotriazole, SODIUM PHOSPHATE, MONOBASIC form, its freezing point reaches below-40 ℃, and melting ice and snow effect is more remarkable.
Novel Snow Agent formula has been abandoned the general layout take a kind of solvent as mother liquor, the mode that adopts multiple low molecule organic polyhydric alcohol to mix;
Inhibiter also adopts the composite corrosion inhibitor of Multiple components combination, and various compositions have synergistic effect, the composite protection film of formation, and existing passive film has again adsorption film, has reached the object of multilayer protection.Realize the effect of anticorrosion, antirust, scale removal, pollution-free, toxicological harmless environmental protection.
Preparation method
(1) accurately take in proportion low molecule organic polyhydric alcohol, trolamine, chelate of metal ion or its esters, Starso, benzotriazole, SODIUM PHOSPHATE, MONOBASIC, water;
(2) water is added to can heat and reactor with agitating function in;
(3) trolamine, chelate of metal ion or its esters, Starso, benzotriazole, SODIUM PHOSPHATE, MONOBASIC are added to the water successively, constantly stir, it is dissolved, heat if desired;
(4) slowly low molecule organic multicomponent alcohol mixture being added in above-mentioned mixed system, fully dissolving, stir, is between 8～9 by pH value control;
(5) filter with the filter core bucket that particle diameter is 1 μ m; Filtrate is made Snow Agent;
(6) according to processing requirement, product is carried out to materialization check, comprise the performance index such as freezing point, pH value, dissolution rate, corrosion rate.
This Snow Agent compared with prior art possesses following advantage:
1. persistence.Because this Snow Agent of the mixture debris in long-time after spraying that adds low molecule organic polyhydric alcohol can extend the snow melt time, make Snow Agent long-term role.And relative other Snow Agent of freezing point is lower, due to adding of ethanol, has greatly increased hydrogen bond, thereby has made freezing point reach-40 ℃ and following;
2. rapidity.This Snow Agent can be dissolved the accumulated snow between track switch especially stock rail and tongue rapidly after spraying immediately, and reaches good result in the short period;
3. the feature of environmental protection.This Snow Agent adopts composite corrosion inhibitor to have the effect of protection against corrosion, anticorrosion, antirust, scale removal, pollution-free, toxicological harmless, environmental protection;
4. compared with Snow Agent of the same type, not only consumption is little for this Snow Agent, price is more cheap, and collocation method is easy, easy to operate, shelf-stable;
5. Snow Agent is easy to promote the use of AT STATION as one snow melt mode easily, can reduce staff's labour intensity.
Snow Agent flusher and method
(1) flusher adopts the equipment of spraying insecticide can meet Snow Agent service requirements, using method is easy, sprays or smear all can.Because the Snow Agent spraying is droplet state, in suggestion sprinkling process, operator should wear mouth mask to prevent in fog-like liquid suction body.
(2) suggestion of spray method
The mode that railway interests's cleaning snow in winter can adopt Snow Agent to combine with artificial snow removing.Can utilize the method such as artificial, mechanical to remove for the accumulated snow of track both sides; And track switch especially the accumulated snow between stock rail and tongue can remove by spraying snow-melting agent, can reduce like this usage quantity of Snow Agent, avoid expanding environmental pollution.It should be noted that in the time using Snow Agent to remove the snow and should improve method of application, advise adopting the method for use Snow Agent before avenging and after avenging.Before snow, use Snow Agent to freeze after preventing avenging landing, strengthened snow removing difficulty; After snow, use Snow Agent can use according to the field condition such as temperature, snowfall the Snow Agent of various dose, to improve snow melt efficiency, reduce consumption.
Embodiment
Embodiment 1:
For Shanxi, Ji and southern area temperature-15 ℃ of left and right and above regional each material proportioning:
Low molecule organic polyhydric alcohol: 30%
Ethanol: 1%
Water: 67.4%
Trolamine: 0.8%;
Chelate of metal ion and its esters: 0.1%;
Starso: 0.2%;
Benzotriazole: 0.3%;
SODIUM PHOSPHATE, MONOBASIC: 0.2%
Preparation method as previously mentioned.
Embodiment 2:
For the north comparatively cold district if the temperature in the Three Eastern Provinces is-25～-30 ℃ and the following each material proportioning in area:
Low molecule organic polyhydric alcohol: 60%
Ethanol: 2%
Water: 34.5%
Trolamine: 1.0%;
Chelate of metal ion and its esters: 0.8%;
Starso: 0.4%;
Benzotriazole: 0.8%;
SODIUM PHOSPHATE, MONOBASIC: 0.5%
Preparation method as previously mentioned.
Embodiment 3: performance measurement
Metal protection test and toxicity index
Go out the Snow Agent of different ratios according to above-mentioned formulated, it is carried out to corrosion test.The performance index such as estimated viscosity, proportion, pH value, freezing point, then at 25 ℃, put into respectively a certain amount of aluminium alloy, red copper, steel disc, sealing and standing 7 days (168h), measures the corrosion condition of different compounded formula Snow Agent to metal testing plate, and result is as shown in table 1:
Table 1 full formula test-results
The assay of this Snow Agent the key technical indexes is as shown in table 2:
| Test item | Standard-required (liquid) | Measured result |
| Dissolution rate/(g/min) | ≥6.0 | 11.0 |
| Deicing or snow melting ability/(g/min) | 90% of >=sodium-chlor snow melt ability | 102.0 |
| Freezing point/℃ (200g/L) | ----- | -47 |
| PH value | 6.0～10.0 | 8.7 |
| Corrosion of carbon steel rate/(mm/a) | ≤0.18 | 0.04 |
| Concrete erosion rate/(kg/m 2) | ≤0.30 | 0.05 |
| Mercury (Hg) w/% | ≤0.0001 | 0.0 |
| Cadmium (Cd) w/% | ≤0.0005 | 0.00002 |
| Chromium (Cr) w/% | ≤0.0015 | 0.0002 |
| Plumbous (Pb) w/% | ≤0.0025 | 0.0003 |
| Arsenic (Se) w/% | ≤0.0005 | 0.0 |
Snow Agent is to concrete corrosion experiment
The Snow Agent solution soaking concrete test block of preparation optimum formula, soak time is 168h, is immersed in the not significantly corrosion of concrete test block surface in Snow Agent solution.
Snow Agent snow melt experiment
Test according to the difference of Winter Snow amount.Test divides slight snow, moderate snow, heavy snow Three Estate to carry out, and by the snowfall of different grades is carried out to spray test, determines the Snow Agent sprinkling amount under different grades.(in table 3)
Snow Agent sprinkling amount under the different snowfall grades of table 3
| Snowfall grade | The deposite snow degree of depth | Every group of melting snow on turnout junction agent sprinkling amount |
| Slight snow | Below 3 centimetres | ≤400mL |
| Moderate snow | 3～5 centimetres | 400～700mL |
| Heavy snow | 5～10 centimetres | 700～1400mL |
Claims (8)
1. a Snow Agent, is characterized in that its composition comprises (weight percent):
Low molecule organic polyhydric alcohol: 30-60%
Trolamine: 0.8-1.2%
Chelate of metal ion or its esters: 0.1-1%
Starso: 0.2-0.4%
Benzotriazole: 0.1-1%
SODIUM PHOSPHATE, MONOBASIC: 0.2-0.5%
Water: 30%-70%.
2. according to the Snow Agent of claim 1, wherein composition also comprise add ethanol 1-2%(weight percent).
3. according to the Snow Agent of claim 1 or 2, wherein composition consists of:
Low molecule organic polyhydric alcohol: 30%
Ethanol: 1%
Water: 67.4%
Trolamine: 0.8%;
Chelate of metal ion and its esters: 0.1%;
Starso: 0.2%;
Benzotriazole: 0.3%;
SODIUM PHOSPHATE, MONOBASIC: 0.2%.
4. according to the Snow Agent of claim 1 or 2, wherein composition consists of:
Low molecule organic polyhydric alcohol: 60%
Ethanol: 2%
Water: 34.5%
Trolamine: 1.0%;
Chelate of metal ion and its esters: 0.8%;
Starso: 0.4%;
Benzotriazole: 0.8%;
SODIUM PHOSPHATE, MONOBASIC: 0.5%.
5. according to the arbitrary described Snow Agent of claim 1-4, wherein said low molecule organic polyhydric alcohol is selected from one or both alcohol in ethylene glycol, propylene glycol.
6. according to claim 1-4 Snow Agent, wherein said low molecule organic polyhydric alcohol is ethylene glycol.
7. according to the preparation method of the arbitrary described Snow Agent of claim 1-6, comprise step:
(1) accurately take in proportion each composition for subsequent use;
(2) water is added to can heat and reactor with agitating function in;
(3) trolamine, chelate of metal ion or its esters, Starso, benzotriazole, SODIUM PHOSPHATE, MONOBASIC are added to the water successively, constantly stir, it is dissolved, heat if desired;
(4) slowly the mixture of low molecule organic polyhydric alcohol or itself and ethanol being added in above-mentioned mixed system, fully dissolving, stir, is between 8～9 by pH value control;
(5) filter with the filter core bucket that particle diameter is 1 μ m; Filtrate is made Snow Agent.
8. according to the spray pattern of the arbitrary described Snow Agent of claim 1-6: when wherein local face snow depth is below 3 centimetres, every group of melting snow on turnout junction agent sprinkling amount≤400mL; When 3～5 centimetres of the deposite snow degree of depth, every group of melting snow on turnout junction agent sprinkling amount 400～700mL; When 5～10 centimetres of the deposite snow degree of depth, every group of melting snow on turnout junction agent sprinkling amount 700～1400mL.
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| CN201410071987.6A CN103820081B (en) | 2014-02-28 | 2014-02-28 | A kind of Snow Agent |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106350013A (en) * | 2016-08-30 | 2017-01-25 | 周琼 | Environmental snow melting agent |
| CN106350012A (en) * | 2016-08-30 | 2017-01-25 | 周琼 | Efficient snow-melting agent |
| CN106367027A (en) * | 2016-08-30 | 2017-02-01 | 周琼 | Efficient environment-friendly snow-melting agent |
| CN106479439A (en) * | 2016-10-13 | 2017-03-08 | 湖北省超能超高压电力科技开发有限公司 | A kind of ice melting agent for transformer station and preparation method thereof |
| CN106479438A (en) * | 2016-08-30 | 2017-03-08 | 周琼 | A kind of environment-friendly high-efficiency Snow Agent |
| CN106883820A (en) * | 2017-03-01 | 2017-06-23 | 黄山九星环保科技有限公司 | A kind of photovoltaic deicing snow melt liquid and preparation method thereof |
| CN108048038A (en) * | 2018-02-11 | 2018-05-18 | 柳昊辰 | Ice melting agent and preparation method thereof |
| CN110067930A (en) * | 2019-03-28 | 2019-07-30 | 乐山力朴能源环保科技有限公司 | A kind of sealing fluid for biogas fluid seal gas holder |
| CN110746932A (en) * | 2019-11-18 | 2020-02-04 | 黄山学院 | Short-term antirust low-chlorine snow-melting agent and preparation method thereof |
| CN112680189A (en) * | 2020-12-22 | 2021-04-20 | 吉林大学 | Mixed type slow-release snow-melting and deicing material, and preparation method and application method thereof |
| CN113652202A (en) * | 2021-09-28 | 2021-11-16 | 苏州佳固士新材料科技有限公司 | Environment-friendly snow-melting agent and preparation method thereof |
| CN115521761A (en) * | 2022-11-04 | 2022-12-27 | 中国铁路北京局集团有限公司北京科学技术研究所 | Snow-melting agent for turnout |
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| CN1600830A (en) * | 2003-09-27 | 2005-03-30 | 张天德 | Snow-solving agent in environmental protection and preparation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106350012A (en) * | 2016-08-30 | 2017-01-25 | 周琼 | Efficient snow-melting agent |
| CN106367027A (en) * | 2016-08-30 | 2017-02-01 | 周琼 | Efficient environment-friendly snow-melting agent |
| CN106479438A (en) * | 2016-08-30 | 2017-03-08 | 周琼 | A kind of environment-friendly high-efficiency Snow Agent |
| CN106350013A (en) * | 2016-08-30 | 2017-01-25 | 周琼 | Environmental snow melting agent |
| CN106479439B (en) * | 2016-10-13 | 2018-09-07 | 国家电网公司 | A kind of ice melting agent and preparation method thereof for substation |
| CN106479439A (en) * | 2016-10-13 | 2017-03-08 | 湖北省超能超高压电力科技开发有限公司 | A kind of ice melting agent for transformer station and preparation method thereof |
| CN106883820A (en) * | 2017-03-01 | 2017-06-23 | 黄山九星环保科技有限公司 | A kind of photovoltaic deicing snow melt liquid and preparation method thereof |
| CN108048038A (en) * | 2018-02-11 | 2018-05-18 | 柳昊辰 | Ice melting agent and preparation method thereof |
| CN110067930A (en) * | 2019-03-28 | 2019-07-30 | 乐山力朴能源环保科技有限公司 | A kind of sealing fluid for biogas fluid seal gas holder |
| CN110746932A (en) * | 2019-11-18 | 2020-02-04 | 黄山学院 | Short-term antirust low-chlorine snow-melting agent and preparation method thereof |
| CN110746932B (en) * | 2019-11-18 | 2022-09-13 | 黄山学院 | Short-term antirust low-chlorine snow-melting agent and preparation method thereof |
| CN112680189A (en) * | 2020-12-22 | 2021-04-20 | 吉林大学 | Mixed type slow-release snow-melting and deicing material, and preparation method and application method thereof |
| CN113652202A (en) * | 2021-09-28 | 2021-11-16 | 苏州佳固士新材料科技有限公司 | Environment-friendly snow-melting agent and preparation method thereof |
| CN115521761A (en) * | 2022-11-04 | 2022-12-27 | 中国铁路北京局集团有限公司北京科学技术研究所 | Snow-melting agent for turnout |
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