Composite scale inhibitor for blast furnace gas washing water, and preparation and use method thereof
A technology for compounding scale inhibitor and blast furnace gas, applied in the field of scale inhibitor, can solve the problems of increasing pipeline scaling, blast furnace gas washing water system scaling, increasing labor costs, etc., reducing the amount of ammonia nitrogen and cyanide wastewater, The effect of improving the scale inhibition rate and stability and reducing the frequency of blowdown
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Embodiment 1
[0021] 1) Take 1g of sodium polymethacrylate, 3g of carboxymethyl cellulose, 5g of sodium alginate, and 0.5g of sodium dodecyl phosphate, mix the above substances and dissolve them in 90.5g of deionized water to obtain 100g of dispersant S ;
[0022] 2) Take 6g of sodium ethylenediaminetetramethylenephosphonate, 5g of S-carboxyethylsulfosuccinic acid, 3g of polyaspartic acid, 4g of ethylenediaminetetramethylenephosphonic acid, 5g of tetramethylammonium oxalate, 3g of 4-hydroxybutyl acrylate, mix the above substances, and dissolve in 74g of deionized water to obtain 100g of antiscalant P;
[0023] 3) Add 10g of dispersant S to every ton of blast furnace gas washing water;
[0024] 4) After 5 minutes, add 100 g of antiscalant P to the blast furnace gas washing water;
[0025] 5) According to the test, the scale inhibition rate of the scale inhibitor to blast furnace gas washing water is 95.1%. The measurement of scale inhibition rate adopts GB / T16632-2008 "Determination of sc...
Embodiment 2
[0028] 1) Take 3 g of sodium polymethacrylate, 5 g of carboxymethyl cellulose, 8 g of sodium alginate, and 2 g of sodium dodecyl phosphate, mix the above-mentioned substances and dissolve them in 82 g of deionized water to obtain 100 g of dispersant S;
[0029] 2) Take 8g of sodium ethylenediaminetetramethylenephosphonate, 8g of S-carboxyethylsulfosuccinic acid, 5g of polyaspartic acid, 6g of ethylenediaminetetramethylenephosphonic acid, 8g of tetramethylammonium oxalate, 6g of 4-hydroxybutyl acrylate, mix the above substances, dissolve in 56g of deionized water, and obtain 100g of antiscalant P;
[0030] 3) Add 10g of dispersant S to every ton of blast furnace gas washing water;
[0031] 4) After 10 minutes, add 150g of antiscalant P to the blast furnace gas washing water;
[0032] 5) According to the test, the scale inhibition rate of the scale inhibitor to blast furnace gas washing water is 97.3%.
[0033] 6) The composite antiscalant was carried out in a blast furnace ga...
Embodiment 3
[0035] 1) Take sodium polymethacrylate: 2g, carboxymethylcellulose 4g, sodium alginate 7g, sodium lauryl phosphate 1g, mix the above substances and dissolve them in 86g of deionized water to obtain 100g of dispersant S;
[0036] 2) Take sodium ethylenediamine tetramethylene phosphonate: 7g, S-carboxyethyl sulfosuccinic acid 6g, polyaspartic acid 4g, ethylenediamine tetramethylene phosphonic acid 6g, tetramethylammonium oxalate 5g , 6g of 4-hydroxybutyl acrylate, mix the above-mentioned substances, dissolve in 66g of deionized water, and obtain 100g of antiscalant P;
[0037] 3) After adding 20g of dispersant S to every ton of blast furnace gas washing water;
[0038] 4) After 20 minutes, add 200g of antiscalant P to the blast furnace gas washing water;
[0039] 5) According to the test, the scale inhibition rate of the scale inhibitor to blast furnace gas washing water is 96.2%.
[0040] 6) The composite antiscalant was tested in a certain blast furnace gas washing water syste...
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