CN112625654A - Coal railway transportation antifreezing solution containing reinforcing agent and reinforcing agent - Google Patents
Coal railway transportation antifreezing solution containing reinforcing agent and reinforcing agent Download PDFInfo
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- CN112625654A CN112625654A CN202011618395.3A CN202011618395A CN112625654A CN 112625654 A CN112625654 A CN 112625654A CN 202011618395 A CN202011618395 A CN 202011618395A CN 112625654 A CN112625654 A CN 112625654A
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- 239000003245 coal Substances 0.000 title claims abstract description 77
- 239000012744 reinforcing agent Substances 0.000 title claims abstract description 51
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 63
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims abstract description 59
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 claims abstract description 44
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 28
- 239000001110 calcium chloride Substances 0.000 claims abstract description 26
- 229910001628 calcium chloride Inorganic materials 0.000 claims abstract description 26
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims abstract description 22
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000012964 benzotriazole Substances 0.000 claims abstract description 22
- 239000001768 carboxy methyl cellulose Substances 0.000 claims abstract description 22
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 claims abstract description 22
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 claims abstract description 22
- 235000010288 sodium nitrite Nutrition 0.000 claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000003623 enhancer Substances 0.000 claims abstract description 13
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 11
- 230000002528 anti-freeze Effects 0.000 claims description 54
- 230000002708 enhancing effect Effects 0.000 claims description 7
- 230000007797 corrosion Effects 0.000 abstract description 33
- 238000005260 corrosion Methods 0.000 abstract description 33
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 abstract description 24
- 238000007710 freezing Methods 0.000 abstract description 24
- 229910052751 metal Inorganic materials 0.000 abstract description 17
- 239000002184 metal Substances 0.000 abstract description 17
- 230000008014 freezing Effects 0.000 abstract description 13
- 239000011780 sodium chloride Substances 0.000 abstract description 12
- 150000002739 metals Chemical class 0.000 abstract description 5
- 239000002994 raw material Substances 0.000 abstract description 5
- 230000007774 longterm Effects 0.000 abstract description 4
- 238000002156 mixing Methods 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 description 14
- 230000005764 inhibitory process Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000005406 washing Methods 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000003112 inhibitor Substances 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 2
- 229910001424 calcium ion Inorganic materials 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000004108 freeze drying Methods 0.000 description 1
- 239000003317 industrial substance Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004018 waxing Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/18—Materials not provided for elsewhere for application to surfaces to minimize adherence of ice, mist or water thereto; Thawing or antifreeze materials for application to surfaces
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)
Abstract
The application relates to the field of coal railway transportation, in particular to an antifreezing solution containing a reinforcing agent for coal railway transportation and the reinforcing agent. The antifreezing solution comprises a calcium chloride solution, a reinforcing agent and a defoaming agent, wherein the calcium chloride solution comprises calcium chloride and water, and the reinforcing agent comprises instant high-viscosity sodium carboxymethyl cellulose, sodium nitrite, benzotriazole, an air entraining agent and sodium hydroxide. The antifreezing solution is prepared by mixing the components in a certain weight part ratio. The application provides a high-quality antifreezing solution containing an enhancer and suitable for coal railway transportation, and also provides an enhancer for an antifreezing solution for coal transportation produced from raw materials such as calcium chloride and sodium chloride, which not only can solve long-term conventional corrosion of the antifreezing solution on a coal-pulling train, a rail and contacted metals, but also can solve the problem that the antifreezing solution containing the calcium chloride and the sodium chloride causes coal freezing of a side wall in an extreme temperature environment below minus 25 ℃ due to insufficient viscosity.
Description
Technical Field
The application relates to the field of coal railway transportation, in particular to an antifreezing solution containing a reinforcing agent for coal railway transportation and the reinforcing agent.
Background
After being mined, the coal is subjected to a series of processes such as washing and dressing, and the processes can generate certain moisture content of the coal to different degrees. In winter, due to the influence of air temperature and the action of wind power, the coal washing is easy to freeze with the train wagon, the train side and the train bottom in the railway transportation process. Once the vehicle is frozen, great difficulty is brought to the subsequent coal unloading work, and most of the coal unloading work needs to be cleaned manually, so that the production is influenced, and the normal turnover and transportation efficiency of the railway transportation vehicle are also seriously influenced; and when the empty vehicle is not cleaned completely, the unbalanced load and the unbalanced weight are easy to occur, and potential safety hazards are formed.
Various methods have been used at home and abroad to solve the problem of freezing the vehicle, such as vibration, electric heating, thawing warehouse, waxing the vehicle body, diesel oil and the like. However, these methods have high labor intensity and high cost, and the car body is easily polluted, the coal quality is also affected, and the problem of car freezing cannot be fundamentally solved. Later, through long-term practice and research, a large amount of anti-freezing liquid with good anti-freezing and unfreezing capabilities is explored to be sprayed to bulk cargos such as train sides, train bottoms, coal washing and the like during railway transportation and loading.
At present, the price of waste engine oil, ethylene glycol type, propylene glycol type or other organic antifreezing solutions is relatively high, and the spraying amount of the required antifreezing solution is large and the cost is very high to achieve the effect of preventing the coal car from being washed by water; however, the price of coal is relatively low, and pure organic antifreezing solution is generally not selected. In contrast, calcium chloride and sodium chloride are also quick-acting pour point depressants and are low in price, so that the calcium chloride and the sodium chloride are frequently applied to the antifreezing solution for coal transportation.
Because the antifreeze solution for coal transportation contains a large amount of chloride ions and calcium ions, the chloride ions have strong hygroscopicity and strong corrosivity, if sodium chloride and calcium chloride particles are settled on the surface of metal, the metal contacted by the antifreeze solution is corroded; in addition, the antifreeze flows to the rail along the carriage, which is easy to damage the railway facilities for a long time, thereby bringing about huge potential safety hazard and economic loss. In addition, chloride ions have a strong destructive effect on many corrosion inhibitors, and calcium ions and many corrosion inhibitors form insoluble substances, which also increases the difficulty of selecting the corrosion inhibitors.
In addition, the viscosity of the calcium chloride and sodium chloride antifreeze solution meeting the technical conditions of antifreeze solution for transporting bulk granular goods according to the standard TB/T3201.1-2009 is generally about 3.0mPa & s, and is too low, so that the adhesion rate of the antifreeze solution and the car side is too low, the problems of too long coal freezing car side and coal unloading time and too high coal unloading cost are still caused, and the situation of fatigue operation of workers is caused.
Disclosure of Invention
Aiming at the problems that the adhesion rate of metals and antifreeze which are easily corroded and contacted by coal washing and freezing car walls and antifreeze and the car walls is too low in the railway transportation process in winter, the application aims to provide the antifreeze and the enhancer for the railway transportation of coal, which contain the enhancer, so as to solve the problems in the prior art.
In order to achieve the above object, the present application provides an antifreeze for coal rail transport containing a reinforcing agent. The antifreezing solution comprises a calcium chloride solution and a reinforcing agent, the calcium chloride solution comprises calcium chloride and water, and the reinforcing agent comprises instant high-viscosity sodium carboxymethyl cellulose, sodium nitrite, benzotriazole, an air entraining agent and sodium hydroxide; the antifreeze comprises the following components in parts by weight:
preferably, the antifreeze solution comprises the following components in parts by weight: 29.4 parts of calcium chloride, 70.6 parts of water, 0.047 part of instant high-viscosity sodium carboxymethyl cellulose, 0.52 part of sodium nitrite, 0.060 part of benzotriazole, 0.32 part of air entraining agent and 0.2 part of sodium hydroxide.
Preferably, the antifreeze solution comprises the following components in parts by weight: 29 parts of calcium chloride, 71 parts of water, 0.08 part of instant high-viscosity sodium carboxymethyl cellulose, 1.0 part of sodium nitrite, 0.05 part of benzotriazole, 0.35 part of air entraining agent and 0.3 part of sodium hydroxide.
Preferably, the anti-freezing solution further comprises a defoaming agent, and the defoaming agent is added into the anti-freezing solution according to the weight ratio of 1: 10000.
In a second aspect, the application also provides a reinforcing agent of the antifreeze for coal railway transportation, the reinforcing agent comprises instant high-viscosity sodium carboxymethyl cellulose, sodium nitrite, benzotriazole, an air entraining agent and sodium hydroxide, and the components are as follows in parts by weight:
preferably, the reinforcing agent is prepared from (0.9-3.2): 100 parts by weight of the calcium chloride solution.
Preferably, the reinforcing agent comprises the following components in parts by weight: 6 parts of instant high-viscosity sodium carboxymethylcellulose, 37 parts of sodium nitrite, 5 parts of benzotriazole, 23 parts of air entraining agent and 20 parts of sodium hydroxide.
Preferably, the enhancer is added to the calcium chloride solution in a weight ratio of 1.6: 100.
Preferably, the reinforcing agent comprises the following components in parts by weight: 3 parts of instant high-viscosity sodium carboxymethylcellulose, 65 parts of sodium nitrite, 2 parts of benzotriazole, 20 parts of air entraining agent and 10 parts of sodium hydroxide.
Preferably, the enhancer is added to the calcium chloride solution in a weight ratio of 2: 100.
The application provides an intensifier product which not only meets the technical conditions of antifreeze solution for transporting bulk granular goods according to TB/T3201.1-2009 standard, but also contains an intensifier and is suitable for high-quality antifreeze solution for coal railway transportation, and also provides the intensifier product for the antifreeze solution for coal transportation produced by raw materials such as calcium chloride, sodium chloride and the like, and the intensifier product can not only solve the long-term past corrosion of the antifreeze solution for coal transportation on a coal pulling train, a rail and contacted metal, but also solve the problem that the antifreeze solution containing calcium chloride and sodium chloride causes the freezing of coal truck sides in an extreme air temperature environment below minus 25 ℃ due to insufficient viscosity.
Detailed Description
The antifreeze solution and the reinforcing agent for coal rail transportation provided by the present application will be described in detail and clearly by way of examples. It is to be understood that the embodiments described herein are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In one aspect, the embodiment of the application provides an antifreezing solution for coal railway transportation, which contains a reinforcing agent. The antifreezing solution comprises a calcium chloride solution and a reinforcing agent, the calcium chloride solution comprises calcium chloride and water, and the reinforcing agent comprises instant high-viscosity sodium carboxymethyl cellulose, sodium nitrite, benzotriazole, an air entraining agent and sodium hydroxide; the antifreeze comprises the following components in parts by weight:
preferably, the anti-freezing solution further comprises a defoaming agent, and the defoaming agent is added into the anti-freezing solution according to the weight ratio of 1: 10000. The defoaming agent is added to avoid the influence on the subsequent spraying work due to too much foam formed in the dissolving process.
In the embodiment of the application, the calcium chloride is anhydrous calcium chloride, and the anhydrous calcium chloride can release heat in a large amount when being dissolved, so that the temperature of the solution is increased.
In the embodiment of the application, the instant high-viscosity sodium carboxymethyl cellulose, the sodium nitrite and the benzotriazole are all industrial chemical products.
The antifreezing solution containing the reinforcing agent for coal railway transportation provided by the embodiment of the application has the specific preparation process flow that: at normal temperature, firstly, adding anhydrous calcium chloride into water in proportion, and fully stirring to completely dissolve the calcium chloride; the solution temperature is raised due to heat release when the anhydrous calcium chloride is dissolved, and the reinforcing agent containing the instant high-viscosity sodium carboxymethyl cellulose, the sodium nitrite, the benzotriazole, the air entraining agent and the sodium hydroxide is added in proportion when the solution is hot, and is stirred to be fully dissolved; and finally, adding a corresponding amount of defoaming agent.
In the embodiment of the application, calcium chloride is a main freezing point depression component, so that the freezing point of the anti-freezing solution for coal railway transportation can be ensured to be below-46 ℃; the instant high-viscosity sodium carboxymethyl cellulose can be well dissolved in a high-concentration calcium chloride solution, so that the antifreeze for coal railway transportation has certain viscosity, the wall-hanging property of the antifreeze for coal railway transportation on a carriage is improved, and coal washing is prevented from being frozen on the carriage side; the air entraining agent can increase the frost resistance of the pulverized coal and relieve the pulverized coal from freezing the car side; the sodium hydroxide can adjust the pH value of the antifreezing solution for railway coal transportation and can also increase the wall-hanging property of the antifreezing solution for railway coal transportation; the sodium nitrite and the benzotriazole can be fully dissolved in the calcium chloride solution, insoluble substances can not be formed, and the corrosion inhibition effect on the car side metal is good.
The antifreeze fluid for coal rail transportation provided by the embodiment of the present application will be described in detail by specific embodiments. Unless otherwise specified, various raw materials used below are commercially available.
Example 1
In this embodiment, one preferable ratio in the range of the ratio of the antifreeze is adopted, and the antifreeze comprises the following components in parts by weight: 29.4 parts of calcium chloride, 70.6 parts of water, 0.047 part of instant high-viscosity sodium carboxymethyl cellulose, 0.52 part of sodium nitrite, 0.06 part of benzotriazole, 0.32 part of air entraining agent, 0.2 part of sodium hydroxide and 0.001 part of defoaming agent.
The anti-freezing solution is prepared according to the proportion, the metal corrosion value is measured by a corrosion value test method JB/T7901-.
TABLE 1 Metal corrosivity detecting Table
As can be seen from Table 1, in the present example, the corrosion values of the antifreeze solution for steel, copper and aluminum were as low as 0.006mm/a, 0.001mm/a and 0.004mm/a, respectively.
Meanwhile, the coal for test is loaded into an iron sheet box for test, the prepared antifreeze solution in the embodiment is sprayed, and then the iron sheet box is placed in a freezer at the temperature of minus 26 ℃ for frozen coal test, and the test result shows that the coal for test has no frozen side and no adhesion.
Therefore, the antifreezing solution containing the reinforcing agent for coal railway transportation provided by the application has good antifreezing and anti-adhesion capabilities, and can play a good corrosion inhibition role.
Example 2
In this embodiment, another preferable ratio in the range of the ratio of the antifreeze is adopted, and the antifreeze comprises the following components in parts by weight: 29 parts of calcium chloride, 71 parts of water, 0.08 part of instant high-viscosity sodium carboxymethyl cellulose, 1.0 part of sodium nitrite, 0.05 part of benzotriazole, 0.35 part of air entraining agent, 0.3 part of sodium hydroxide and 0.001 part of defoaming agent.
The anti-freezing solution is prepared according to the proportion, the metal corrosion value is measured by a corrosion value test method JB/T7901-.
As can be seen from Table 1, in the present example, the corrosion values of the antifreeze for steel, copper and aluminum were as low as 0.005mm/a, 0.000mm/a and 0.002mm/a, respectively.
As in example 1, the test coal was charged into a test iron box, the formulated antifreeze solution of this example was sprayed, and the test coal was frozen in a freezer at-26 ℃ to show no freeze-drying and no adhesion.
Therefore, the antifreezing solution containing the reinforcing agent for coal railway transportation provided by the application has good antifreezing and anti-adhesion capabilities, and can play a good corrosion inhibition role.
In a second aspect, the embodiment of the application also provides a reinforcing agent of the antifreeze for coal railway transportation, which is used for preparing the antifreeze by mixing with a calcium chloride solution. The reinforcing agent comprises instant high-viscosity sodium carboxymethylcellulose, sodium nitrite, benzotriazole, an air entraining agent and sodium hydroxide, and the components in parts by weight are as follows:
preferably, the reinforcing agent is prepared from (0.9-3.2): 100 parts by weight of the calcium chloride solution.
In the embodiment of the application, the proportion of the reinforcing agent is a preferable proportion range verified by a plurality of experiments, in practical application, any proportion by weight in the range shows a good metal corrosion inhibition effect, has certain viscosity, can effectively prevent pulverized coal from freezing the side of a train, and is very suitable for being used in the antifreeze for coal railway transportation containing calcium chloride and sodium chloride.
The concrete embodiment of the enhancing agent for antifreeze fluid for coal railway transportation provided by the present application will be described in detail below. Unless otherwise specified, various raw materials used below are commercially available.
Example 3
In the embodiment, one preferable ratio in the range of the reinforcing agent ratio is adopted, and the reinforcing agent comprises the following components in parts by weight: 6 parts of instant high-viscosity sodium carboxymethylcellulose, 37 parts of sodium nitrite, 5 parts of benzotriazole, 23 parts of air entraining agent and 20 parts of sodium hydroxide.
In the embodiment, the reinforcing agent obtained by adopting the proportion is added into a calcium chloride solution according to the weight ratio of 1.6:100, and then experimental tests are carried out, wherein specific test index results are shown in table 2.
TABLE 2 table for chemical property examination
In this example, the calcium chloride solution used was a solution obtained by mixing calcium chloride and water at a weight ratio of 30: 70.
As can be seen from Table 2, the reinforcing agent prepared according to the formulation of the present example was added to a calcium chloride solution, and the measured ice point value was-50 ℃, the density was 1.280, the pH value was 6.9, the corrosion value to steel was 0.005mm/a, the corrosion value to copper was 0.0011mm/a, the corrosion value to aluminum was 0.0068mm/a, and the viscosity was 9.85 mPas. Therefore, the reinforcing agent prepared by the mixture ratio of the embodiment has low freezing point value, low corrosion value to metal and high viscosity.
Therefore, the reinforcing agent for the antifreeze solution for coal railway transportation has a good corrosion inhibition effect, greatly improves the viscosity, and enhances the anti-freezing and anti-adhesion capabilities.
Example 4
In this embodiment, another preferable mixture ratio in the mixture ratio range of the reinforcing agent is adopted, and the components are as follows in parts by weight: 3 parts of instant high-viscosity sodium carboxymethylcellulose, 65 parts of sodium nitrite, 2 parts of benzotriazole, 20 parts of air entraining agent and 10 parts of sodium hydroxide.
In the embodiment, the reinforcing agent obtained by adopting the proportion is added into a calcium chloride solution according to the weight ratio of 2:100 and then is subjected to experimental tests, and the specific test index results are shown in table 2.
In this example, the calcium chloride solution used was the same as in example 3, i.e., the resulting solution was mixed with water at a weight ratio of 30: 70.
As can be seen from Table 2, the reinforcing agent prepared according to the formulation of the present example was added to a calcium chloride solution, and the measured ice point value was-53 ℃, the density was 1.283, the pH value was 7.0, the corrosion value to steel was 0.003mm/a, the corrosion value to copper was 0.000mm/a, the corrosion value to aluminum was 0.004mm/a, and the viscosity was 6.8 mPas. Therefore, the reinforcing agent prepared by the mixture ratio of the embodiment has low freezing point value, low corrosion value to metal and high viscosity.
Therefore, the reinforcing agent for the antifreeze solution for coal railway transportation has a good corrosion inhibition effect, greatly improves the viscosity, and enhances the anti-freezing and anti-adhesion capabilities.
Comparative example 1
This comparative example is a calcium chloride solution without any addition.
The calcium chloride solution is directly subjected to experimental tests, and specific test index results are shown in table 2.
In this comparative example, the calcium chloride solution used was the same as in examples 3 and 4, i.e., the resulting solution was mixed with water at a weight ratio of 30: 70.
As can be seen from Table 2, the calcium chloride solution without the reinforcing agent was tested to have an ice point value of-46.3 deg.C, a density of 1.277, a pH of 6.0, a corrosion value for steel of 0.295mm/a, a corrosion value for copper of 0.066mm/a, a corrosion value for aluminum of 0.0745mm/a, and a viscosity of 2.3 mPa.s. Therefore, the calcium chloride solution without the reinforcing agent is weakly acidic and is easy to corrode metal for a long time; the ice point value is higher than that of example 3 and example 4; the corrosion resistance to steel is 59 times that of example 3 and 98 times that of example 4, the corrosion resistance to copper is 60 times that of example 3 and 66 times that of example 4, and the corrosion resistance to aluminum is 11 times that of example 3 and 19 times that of example 4; the viscosity was only 23.35% for example 3 and 33.82% for example 4.
Therefore, the antifreezing solution without the reinforcing agent is easy to corrode metals, low in viscosity, and easy to freeze and adhere.
From the above results, the reinforcing agent for the antifreeze solution for coal railway transportation provided by the embodiment of the application is convenient to apply, and is particularly suitable for the antifreeze solution containing calcium chloride and sodium chloride for coal railway transportation; and aiming at metals contacted by the antifreeze for coal railway transportation, the enhancer has excellent metal corrosion inhibition effect, and can effectively prevent pulverized coal from freezing the side of the train, thereby reducing the ton loss rate in coal transportation and reducing manual operation.
The embodiment of the application provides a high-quality antifreezing solution which not only meets the technical conditions of antifreezing solution for bulk granular cargo transportation of TB/T3201.1-2009 standard, contains an enhancer and is suitable for railway transportation of coal, but also provides an enhancer product for the antifreezing solution for coal transportation produced by raw materials such as calcium chloride, sodium chloride and the like, which not only can solve long-term past corrosion of the antifreezing solution for coal transportation on a coal pulling train, a rail and contacted metals, but also can solve the problem that the antifreezing solution containing calcium chloride and sodium chloride causes frozen sides of coal in an extreme temperature environment below-25 ℃ due to insufficient viscosity.
The present application has been described in detail with reference to specific embodiments and illustrative examples, but the description is not intended to limit the application. Those skilled in the art will appreciate that various equivalent substitutions, modifications or improvements may be made to the presently disclosed embodiments and implementations thereof without departing from the spirit and scope of the present disclosure, and these fall within the scope of the present disclosure. The protection scope of this application is subject to the appended claims.
Claims (10)
1. The antifreezing solution containing the reinforcing agent for coal railway transportation is characterized by comprising a calcium chloride solution and the reinforcing agent, wherein the calcium chloride solution comprises calcium chloride and water, and the reinforcing agent comprises instant high-viscosity sodium carboxymethyl cellulose, sodium nitrite, benzotriazole, an air entraining agent and sodium hydroxide; the antifreeze comprises the following components in parts by weight:
2. the antifreeze solution for coal railway transportation containing the reinforcing agent according to claim 1, wherein the antifreeze solution comprises the following components in parts by weight: 29.4 parts of calcium chloride, 70.6 parts of water, 0.047 part of instant high-viscosity sodium carboxymethyl cellulose, 0.52 part of sodium nitrite, 0.060 part of benzotriazole, 0.32 part of air entraining agent and 0.2 part of sodium hydroxide.
3. The antifreeze solution for coal railway transportation containing the reinforcing agent according to claim 1, wherein the antifreeze solution comprises the following components in parts by weight: 29 parts of calcium chloride, 71 parts of water, 0.08 part of instant high-viscosity sodium carboxymethyl cellulose, 1.0 part of sodium nitrite, 0.05 part of benzotriazole, 0.35 part of air entraining agent and 0.3 part of sodium hydroxide.
4. The antifreeze solution for coal rail transportation according to any one of claims 1 to 3, wherein said antifreeze solution further comprises an antifoaming agent, and said antifoaming agent is added to said antifreeze solution in a weight ratio of 1: 10000.
5. The reinforcing agent of the antifreezing solution for coal railway transportation is characterized by comprising instant high-viscosity sodium carboxymethyl cellulose, sodium nitrite, benzotriazole, an air entraining agent and sodium hydroxide, wherein the components in parts by weight are as follows:
6. the enhancing agent for the antifreeze solution for coal railway transportation according to claim 5, wherein the enhancing agent is prepared from the following components in percentage by weight (0.9-3.2): 100 parts by weight of the calcium chloride solution.
7. The enhancing agent for the antifreeze solution for coal railway transportation according to claim 5, wherein the enhancing agent comprises the following components in parts by weight: 6 parts of instant high-viscosity sodium carboxymethylcellulose, 37 parts of sodium nitrite, 5 parts of benzotriazole, 23 parts of air entraining agent and 20 parts of sodium hydroxide.
8. The enhancer for the antifreeze solution for coal railway transportation according to claim 7, wherein said enhancer is added to the calcium chloride solution in a weight ratio of 1.6: 100.
9. The enhancing agent for the antifreeze solution for coal railway transportation according to claim 5, wherein the enhancing agent comprises the following components in parts by weight: 3 parts of instant high-viscosity sodium carboxymethylcellulose, 65 parts of sodium nitrite, 2 parts of benzotriazole, 20 parts of air entraining agent and 10 parts of sodium hydroxide.
10. The enhancer for the antifreeze solution for coal railway transportation according to claim 9, wherein said enhancer is added to the calcium chloride solution in a weight ratio of 2: 100.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011618395.3A CN112625654A (en) | 2020-12-31 | 2020-12-31 | Coal railway transportation antifreezing solution containing reinforcing agent and reinforcing agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011618395.3A CN112625654A (en) | 2020-12-31 | 2020-12-31 | Coal railway transportation antifreezing solution containing reinforcing agent and reinforcing agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112625654A true CN112625654A (en) | 2021-04-09 |
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| CN114456773A (en) * | 2022-03-30 | 2022-05-10 | 宁夏北极星化工有限公司 | Antifreezing snow-removing agent for carriage of coal transport vehicle and preparation method thereof |
| CN115505372A (en) * | 2022-09-22 | 2022-12-23 | 徐州中矿海森德安全科技有限公司 | Method for preparing coal antifreeze by using ammonia-soda waste liquid and coal antifreeze |
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| CN114456773A (en) * | 2022-03-30 | 2022-05-10 | 宁夏北极星化工有限公司 | Antifreezing snow-removing agent for carriage of coal transport vehicle and preparation method thereof |
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Application publication date: 20210409 |