CN102732218B - Method for preparing special high-efficiency composite corrosion inhibitor for coal or mineral powder transportation anti-freezing liquid - Google Patents
Method for preparing special high-efficiency composite corrosion inhibitor for coal or mineral powder transportation anti-freezing liquid Download PDFInfo
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- CN102732218B CN102732218B CN201210233164.XA CN201210233164A CN102732218B CN 102732218 B CN102732218 B CN 102732218B CN 201210233164 A CN201210233164 A CN 201210233164A CN 102732218 B CN102732218 B CN 102732218B
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Abstract
The invention discloses a method for preparing a special high-efficiency composite corrosion inhibitor for coal or mineral powder transportation anti-freezing liquid. The method comprises the following steps: dissolving anhydrous calcium chloride into a three-neck flask to obtain an aqueous solution, adding dissolved urea solution while stirring, and respectively adding solution such as amino trimethylene phosphonic acid, zinc sulfate, triethanolamine, benzotriazole, sodium benzoate, cinnamic acid and the like in sequence while stirring. According to the invention, non-toxic anti-corrosion raw materials are selected and are scientifically compounded to generate a synergistic effect with each other, and the minimum usage amount is realized at an earlier stage under the same effect. The high-efficiency composite corrosion inhibitor, provided by the invention, has good antiseptic effect when added into the coal or mineral powder transportation anti-freezing liquid in winter, the anti-corrosion effect to a metal device reaches relative standard requirement and conforms to the technical condition TB/T3208-2008 of the anti-freezing liquid for bulk particle cargo transportation of Ministry of Railways; and the method has the characteristics of simple production process, low production cost, incombustibility, no toxicity, no smell, no taste and the like.
Description
Technical field
The present invention relates to coal or breeze transportation technology field, is the development of a kind of coal or breeze transportation deicing fluid special efficient composite corrosion inhibitor specifically.
Background technology
The moisture coal of transportation in winter and breeze and other items easy freezing in car, gives winter transportation and unloads and bring great difficulty, causes huge financial loss also to the users such as railway, colliery, harbour or breeze, coal, has a strong impact on vehicle turnover and conveying efficiency; Therefore, while transporting in the winter time coal and breeze and other items in recent years, a large amount of use coal in winter or breeze transportation deicing fluid, to prevent that it from freezing in car, solve the difficulty of moisture coal and breeze and other items transportation aspect.The using method of this series products is, deicing fluid is sprayed onto to railway carriage bottom and four sides casing before filling moisture coal or breeze, then deicing fluid is sprayed onto in the coal or breeze in car again.
Coal or breeze carrier vehicle or freighter are mainly formed by metallic substance manufacture, and the solution that can reduce the various materials of freezing point all has certain corrodibility to metallic substance.Therefore its deicing fluid is low except possessing its freezing point, outside environmentally safe, the advantage such as nonflammable, cheap, should not cause corrosion to metallic substance.Research discovery, in deicing fluid, adding special corrosion agent can effectively alleviate, and even stops its corrosion to metallic substance.
Patent, the document relevant with deicing fluid emerges in an endless stream both at home and abroad, and its main trend is to add the improvement of inhibiter; Traditional deicing fluid inhibiter, as Sodium chromate, sodium dichromate 99, Sodium orthomolybdate, sodium wolframate etc., all toxicity is too large, and can cause very large pollution and be not suitable for continuing using environment, should substitute these poisonous public hazards materials with the inhibiter of nontoxic or low toxicity.Nitrites is used as the main inhibiter of ferrous metal, its corrosion inhibition under calcium chloride anti-freeze fluid working conditions is fabulous, and Sodium Nitrite joins and also can make its freezing point reduce in calcium chloride solution, be therefore widely used in winter coal or breeze transportation deicing fluid in; But nitrite has certain pollution to environment, particularly because its carcinogenesis has abroad required to stop using.
Summary of the invention
Technical problem to be solved by this invention is to overcome transportation deicing fluid coal or breeze carrier vehicle or freighter to be caused to the method for corrosion, and a kind of preparation method who transports deicing fluid special efficient composite corrosion inhibitor is provided.
Technical problem of the present invention solves by the following technical solutions:
A preparation method for coal or breeze transportation deicing fluid special efficient composite corrosion inhibitor, comprises the following steps:
The preparation of 1 ﹚ coal or breeze transportation deicing fluid
In 2 different there-necked flasks, add respectively Calcium Chloride Powder Anhydrous, urea element, its weight ratio is Calcium Chloride Powder Anhydrous: urea element equals 1:0.2, then adds respectively water, stirring and dissolving becomes solution A, B, again solution B is joined in solution A, make it mix rear filtration, to remove water-insoluble;
The preparation of 2 ﹚ coals or breeze transportation deicing fluid special efficient composite corrosion inhibitor
Under stirring, add respectively successively the solution of Amino Trimethylene Phosphonic Acid, zinc sulfate, trolamine, benzotriazole, Sodium Benzoate, styracin etc. in above-mentioned solution, then be uniformly mixed rear filtration, to remove insolubles.
In described step 1), the weight ratio of Calcium Chloride Powder Anhydrous and water is 1:2.2, and urea element is 1:2 with the weight ratio of water.
The add-on of the Amino Trimethylene Phosphonic Acid described step 2) is 0.3%, the add-on of zinc sulfate is 0.1%, the add-on of trolamine is 0.05%, the add-on of benzotriazole is 0.05～0.1%, the add-on of Sodium Benzoate is 0.05～0.1%, the add-on of styracin is 0.05～0.1%, all take 1000g coal or breeze transportation deicing fluid as Ji Zhun Suan ﹙ Chong Liang is Bi ﹚.
Described step 2) Amino Trimethylene Phosphonic Acid in, zinc sulfate, trolamine, Sodium Benzoate, styracin etc. all dissolve and become solution with room temperature water, and its concentration is 20% ﹙ Chong Liang Bi ﹚.
Described step 2) benzotriazole in is the hot water dissolving with 60-65 ℃, and its concentration is that 10% ﹙ Chong Liang is Bi ﹚.
The phosphoric acid salt material that the present invention adopts has anticorrosive effect to metallic substance such as ferrous metal, alloys; Benzotriazole is the passivator of copper, fabulous to the anticorrosion ability of copper; Trolamine is the sanitas of aluminum metal; The present invention selects nontoxic anticorrosive raw material, by science is composite, makes it can produce synergistic effect each other, is issued to minimum usage quantity in the early stage of same effect.The special efficient composite corrosion inhibitor that obtains of research and development join winter coal or breeze transportation deicing fluid in; the anticorrosion ability of hardware is reached to relevant criterion requirement; meet the TB/T3208-2008 of Ministry of Railways bulk granular transportation of cargo deicing fluid technical qualification; solved the etching problem that transportation deicing fluid causes coal or breeze carrier vehicle or freighter; and it is simple to have preparation technology, cost is low, non-combustible; nontoxic, the odorless feature such as tasteless.
Embodiment
Below by embodiment, the invention will be further described.Yet these embodiment just for the purpose of description, are not meant to limit the present invention.
embodiment 1:
1, the preparation of coal or breeze transportation deicing fluid
In the 1500mL there-necked flask with mechanical stirring device, add 250g Calcium Chloride Powder Anhydrous, then add 550g water, stirring to make its dissolving; In 300mL there-necked flask at another with sampling device, add 50g urea element, then add 100g water, stirring to make its dissolving; Join again in calcium chloride solution, filter, remove water-insoluble.
2, the preparation of coal or breeze transportation deicing fluid special efficient composite corrosion inhibitor
﹙ 1 ﹚ adds respectively 3g Amino Trimethylene Phosphonic Acid, 1g zinc sulfate, 0.5g trolamine, 0.5g Sodium Benzoate, 0.5g styracin in 5 50mL there-necked flasks with mechanical stirring device, then add respectively 15g, 5g, 2.5g, 2.5g, 2.5g water, stir and make its dissolving; Obtain respectively the solution of Amino Trimethylene Phosphonic Acid, zinc sulfate, trolamine, Sodium Benzoate, styracin etc., join respectively successively in coal or breeze transportation deicing fluid, after stirring mixes it, filter, remove insolubles.
﹙ 2 ﹚ add 5g water in the 50mL there-necked flask with mechanical stirring device, be heated to 60 ℃, add 0.5g benzotriazole, stirring is dissolved it, becomes 10% solution, joins in coal or breeze transportation deicing fluid, add again 11.5g water, after stirring mixes it, filter, remove insolubles.
The coal that contains special efficient composite corrosion inhibitor that embodiment 1 is made or breeze transportation deicing fluid, measure corrosion mitigating effect with engine coolant corrosion measurement method ﹙ SH/T0085-91 ﹚, and its experiment the results are shown in Table 1.
Table 1 test-results
embodiment 2:
1, the preparation of coal or breeze transportation deicing fluid
In the 1500mL there-necked flask with mechanical stirring device, add 250g Calcium Chloride Powder Anhydrous, then add 550g water, stirring to make its dissolving; In 300mL there-necked flask at another with sampling device, add 50g urea element, then add 100g water, stirring to make its dissolving; Join in calcium chloride solution, vacuum filtration, removes water-insoluble again.
2, the preparation of coal or breeze transportation deicing fluid special efficient composite corrosion inhibitor
﹙ 1 ﹚ adds respectively 3g Amino Trimethylene Phosphonic Acid, 1g zinc sulfate, 0.5g trolamine, 0.8g Sodium Benzoate, 0.8g styracin in 5 50mL there-necked flasks with mechanical stirring device, then add respectively 15g, 5g, 2.5g, 4g, 4g water, stir and make its dissolving; Obtain respectively Amino Trimethylene Phosphonic Acid, zinc sulfate, trolamine, Sodium Benzoate, styracin solution, join respectively successively in coal or breeze transportation deicing fluid, after stirring mixes it, vacuum filtration, removes insolubles.
﹙ 2 ﹚ add 8g water in the 50mL there-necked flask with mechanical stirring device, be heated to 50 ℃, then add 0.8g benzotriazole, stirring is dissolved it, becomes 10% solution, joins in coal or breeze transportation deicing fluid, add again 4.6g water, after stirring mixes it, vacuum filtration, removes insolubles.
The coal that contains special efficient composite corrosion inhibitor that embodiment 2 is made or breeze transportation deicing fluid, measure corrosion mitigating effect with engine coolant corrosion measurement method ﹙ SH/T0085-91 ﹚, and its experiment the results are shown in Table 2.
Table 2 test-results
embodiment 3:
1, the preparation of coal or breeze transportation deicing fluid
In the 1500mL there-necked flask with mechanical stirring device, add 250g Calcium Chloride Powder Anhydrous, then add 550g water, stirring to make its dissolving; In 300mL there-necked flask at another with sampling device, add 50g urea element, then add 100g water, stirring to make its dissolving; Join in calcium chloride solution, vacuum filtration, removes water-insoluble again.
2, the preparation of coal or breeze transportation deicing fluid special efficient composite corrosion inhibitor
﹙ 1 ﹚ adds respectively 3g Amino Trimethylene Phosphonic Acid, 1g zinc sulfate, 0.5g trolamine, 1g Sodium Benzoate, 1g styracin in 5 50mL there-necked flasks with mechanical stirring device, then add respectively 15g, 5g, 2.5g, 5g, 5g water, stir and make its dissolving; Obtain respectively the solution of Amino Trimethylene Phosphonic Acid, zinc sulfate, trolamine, Sodium Benzoate, styracin etc., join respectively successively in coal or breeze transportation deicing fluid, after stirring mixes it, vacuum filtration, removes insolubles.
﹙ 2 ﹚ add 10g water in the 50mL there-necked flask with mechanical stirring device, be heated to 65 ℃, then add 1g benzotriazole, stirring makes its dissolving, become 10% solution, join winter coal or breeze transportation deicing fluid in, after stirring it being mixed, vacuum filtration, removes insolubles.
The coal that contains special efficient composite corrosion inhibitor that embodiment 3 is made or breeze transportation deicing fluid, measure corrosion mitigating effect with engine coolant corrosion measurement method ﹙ SH/T0085-91 ﹚, and its experiment the results are shown in Table 3.
Table 3 inhibition experimental result
The present invention has carried out corrosion test to common metal material, has found out the material that meets this system; And the system after composite and composite between each material has also been carried out to corrosion test research, determined coal or the formula system of breeze transportation deicing fluid special efficient composite corrosion inhibitor in winter.Experimental studies results shows, this special efficient composite corrosion inhibitor adds in deicing fluid, can effectively stop its corrosion to metallic substance; And during the composite use of multiple inhibition material, can produce synergistic effect, it is many that effective during than independent use goes out, and also can reduce the addition of inhibiter simultaneously.
Claims (3)
1. a preparation method who is exclusively used in the high efficiency composition inhibiter of coal or breeze transportation deicing fluid, is characterized in that comprising the following steps:
The preparation of 1 ﹚ coal or breeze transportation deicing fluid
In 2 there-necked flasks, add respectively Calcium Chloride Powder Anhydrous, urea element, its weight ratio is Calcium Chloride Powder Anhydrous: urea element equals 1:0.2, then adds respectively water, stirring and dissolving becomes solution A, B, again solution B is joined in solution A, make it mix rear filtration, to remove water-insoluble;
The preparation of 2 ﹚ coals or breeze transportation deicing fluid special efficient composite corrosion inhibitor
Under stirring, add respectively successively the solution of Amino Trimethylene Phosphonic Acid, zinc sulfate, trolamine, benzotriazole, Sodium Benzoate, styracin in above-mentioned solution, add again water and can obtain 1000g coal or breeze transportation deicing fluid, then be uniformly mixed rear filtration, to remove insolubles;
The add-on of the Amino Trimethylene Phosphonic Acid described step 2) is 0.3%, the add-on of zinc sulfate is 0.1%, the add-on of trolamine is 0.05%, the add-on of benzotriazole is 0.05～0.1%, the add-on of Sodium Benzoate is 0.05～0.1%, the add-on of styracin is 0.05～0.1%, and all take 1000g coal or breeze transportation deicing fluid is benchmark.
2. a kind of preparation method who is exclusively used in the high efficiency composition inhibiter of coal or breeze transportation deicing fluid according to claim 1, it is characterized in that: the Calcium Chloride Powder Anhydrous in described step 1) and the weight ratio of water are 1:2.2, urea element is 1:2 with the weight ratio of water.
3. a kind of preparation method who is exclusively used in the high efficiency composition inhibiter of coal or breeze transportation deicing fluid according to claim 1, is characterized in that: the benzotriazole described step 2) is the hot water dissolving with 60-65 ℃, and its concentration is 10% weight ratio.
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