Phosphorus-free composite corrosion and scale inhibitor containing natural biodegradable substances
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A corrosion and scale inhibitor, biodegradable technology, applied in the field of corrosion and scale inhibitors, can solve the problems of reducing phosphorus content and adverse effects on water bodies, and achieve the effects of reducing dosage, improving corrosion and scale inhibition performance, and significant economic benefits
Inactive Publication Date: 2012-08-08
HUNAN ELECTRIC POWER CORP RES INST +2
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Currently commonly used organophosphorus formula corrosion and scale inhibitors include hydroxyethylidene diphosphonic acid (HEDP), aminotrimethylene phosphonic acid (ATMP), 2-phosphonic acid butane-1,2-phosphonic acid butane-2 , 4-tricarboxylic acid (PBTCA), etc. Compared with the early phosphate, it not only improves the efficiency of corrosion and scale inhibition, but also reduces
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Embodiment 1
[0024] Backup ingredients by weight as follows:
[0025] Zinc sulfate 8kg,
[0026] Alkyl glucoside 5kg,
[0027] Polyaspartic acid (salt) 5kg,
[0028] Carboxymethylcellulose 4kg,
[0029] Polyepoxysuccinic acid (salt) 16kg,
[0030] Polymerized amino acid 10kg,
[0031] Sodium gluconate 5kg,
[0032] Tolyltriazole 1kg,
[0033] 46kg of water.
[0034] Prepare the product as follows:
[0035] (1), the above-mentioned water input kettle by weight percentage backup;
[0036] (2), put the above-mentioned carboxymethyl cellulose and polyepoxysuccinic acid backed up by weight percentage into the kettle, stir for 20 minutes, and the temperature is ≤35°C;
[0037] (3), add above-mentioned alkyl glucoside and polyaspartic acid backed up by weight percentage, stir 20 minutes;
[0038] (4), add the above-mentioned polymerized amino acid, sodium gluconate, and tolyltriazole backed up by weight percentage, stir for 30 minutes, add dissolved zinc sulfate, and continue stirring f...
Embodiment 2
[0040] Backup ingredients by weight as follows:
[0041] Dissolved zinc nitrate 1200kg,
[0042] Alkyl sugar 800kg,
[0043] Polyaspartic acid (salt) 800kg
[0044] Carboxymethylcellulose 500kg,
[0045] Polyepoxysuccinic acid (salt) 2000kg,
[0046] Polymerized amino acid 1500kg,
[0047] Sodium gluconate 800kg,
[0048] Tolyltriazole 200kg,
[0049] Deionized water 2200kg.
[0050] Prepare the product as follows:
[0051] Steps (1) to (3) are the same as in Example 1; the above-mentioned water backed up by weight percentage is input in the kettle;
[0052] (4), add the above-mentioned polymerized amino acid, sodium gluconate, and benzotriazole backed up by weight percentage, stir for 30 minutes, add dissolved zinc nitrate, continue stirring for 20 minutes to obtain the product.
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Abstract
The invention introduces a phosphorus-free composite corrosion and scale inhibitor containing natural biodegradable substances. The phosphorus-free composite corrosion and scale inhibitor consists of the following raw materials in a mixing way: zinc sulfate or zinc nitrate, alkyl glycoside, polyaspartic acid, carboxymethylcellulose, polyepoxysuccinic acid, polymerized amino acid, sodium gluconate, methylbenzotriazole or benzotriazole, and water or deionized water. The raw materials are nontoxic, natural, renewable and degradable. The phosphorus-free composite corrosion and scale inhibitor has the advantages of no toxicity, no harm, biodegradability, stable performance, wide raw material source and the like. The synergistic effect of all compositions is fully utilized to improve the performance and reduce dosage. When the phosphorus-free composite corrosion and scale inhibitor is used for circulating cooling water treatment, calcium carbonate, calcium sulfate and calcium phosphate can be prevented from being deposited, the scale inhibition effect is obvious and the corrosion inhibition performance is excellent. The eutrophication of the water body can be effectively avoided, the used amounts of germicide and algaecide are reduced and the economic benefit is remarkable.
Description
technical field [0001] The invention relates to a corrosion and scale inhibitor, in particular to a phosphorus-free composite corrosion and scale inhibitor containing natural biodegradable substances. Background technique [0002] The calcium and magnesium plasma contained in the water will continuously scale on the surface of the pipe wall in the circulating cooling water system, resulting in a decrease in the heat transfer efficiency of the pipe wall, and in severe cases, affecting the flow of circulating water. At the same time, electrochemical corrosion is formed, which makes the pipe wall gradually thinner, reduces the service life, and seriously affects the safe operation of the system. The traditional way to solve this problem is to add corrosion and scale inhibitors. Currently commonly used organophosphorus formula corrosion and scale inhibitors include hydroxyethylidene diphosphonic acid (HEDP), aminotrimethylene phosphonic acid (ATMP), 2-phosphonic acid butane-1,2...
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