A kind of preparation method of high-concentration mixed coal-water slurry additive
A technology for additive preparation and water mixing, which is applied in liquid carbon-containing fuels, petroleum industry, fuels, etc., can solve the problems of increasing the difficulty of pulping coal-water slurry, poor cheap performance, high efficiency and high price, etc., and achieves good stability and Dispersibility, enhanced hydrophilicity, and the effect of reducing tension
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Embodiment 1
[0023] A method for preparing a high-concentration mixed coal-water slurry additive, comprising the following steps:
[0024] Step 1: Weigh 60g of potassium lignosulfonate, 10g of polyethyleneimine and 1g of ammonium chloride, add 100ml of water, and react at 40±5°C for 1h;
[0025] Step 2: After the first step of reaction, cool down to 30±5°C, add 6g of aniline and stir for 0.5h, add 30g of polyethylene glycol 200 to react for 2h, the reaction is completed, and component A is obtained;
[0026] Step 3: Weigh 10g of β-naphthalenesulfonate sodium formaldehyde condensation product into the reactor, add 3g of pyridine and 100ml of water, then dropwise add 10g of triethanolamine dodecylsulfate, and react at 30°C for 2h to obtain the component B;
[0027] Step 4: Mix component A and component B, adjust the pH to 7-8 with 10% sodium hydroxide, concentrate under reduced pressure, and freeze-dry to obtain solid powder of the additive.
Embodiment 2
[0029] A method for preparing a high-concentration mixed coal-water slurry additive, comprising the following steps:
[0030] Step 1: Weigh 70g of sodium lignosulfonate, 15g of polyethyleneimine by weight and 2g of ammonium chloride, add 150ml of water, and react at 40±5°C for 2 hours;
[0031] Step 2: After the first reaction, cool down to 35±5°C, add 7g of aniline and stir for 0.8h, add 35g of polyethylene glycol 600 and react for 2.5h, the reaction is completed, and component A is obtained;
[0032] Step 3: Weigh 15g of β-naphthalenesulfonate sodium formaldehyde condensation product into the reactor, add 4g of pyridine and 100ml of water, then dropwise add 12g of triethanolamine dodecylsulfate, and react at 45±5°C for 3h to obtain the compound share B;
[0033] Step 4: Mix component A and component B, adjust the pH to 7-8 with ammonia water, concentrate under reduced pressure, and freeze-dry to obtain solid powder of the additive.
Embodiment 3
[0035] A method for preparing a high-concentration mixed coal-water slurry additive, comprising the following steps:
[0036] Step 1: Weigh 80g of sodium lignosulfonate, 20g of polyethyleneimine and 3g of ammonium chloride, add 200ml of water, and react at 50°C for 3h;
[0037] Step 2: After the first step of reaction, cool down to 40°C, add 8g of aniline and stir for 1 hour, add 40g of polyethylene glycol 1000 for reaction for 3 hours, and the reaction is completed to obtain component A;
[0038] Step 3: Weigh 20g of α-naphthalenesulfonate sodium formaldehyde condensation product into the reactor, add 5g of pyridine and 150ml of water, then dropwise add 15g of triethanolamine dodecylsulfate, and react at 60°C for 4h to obtain component B ;
[0039] Step 4: Mix component A and component B, adjust the pH to 7-8 with 10% potassium hydroxide, concentrate under reduced pressure, and freeze-dry to obtain solid powder of the additive.
[0040] In addition, commercially available s...
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