Preparation method of coal water slurry dispersing agent
A technology of dispersant and coal-water slurry, applied in the field of preparation of coal-water slurry dispersant, can solve the problems of low degree of dispersing effect, poor adsorption effect of coal particles, etc., and achieve the effect of reducing resistance and reducing surface tension
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Embodiment 1
[0030] Preparation of prefabricated reaction solution:
[0031] The wood chips and crop straws were put into the oven at a mass ratio of 5:1, and dried for 5 hours at a temperature of 70 °C. After drying, the materials were put into a planetary ball mill. Grind for 30min under the conditions to obtain mixed powder;
[0032] The above mixed powder and distilled water were put into the reactor at a mass ratio of 1:10, nitrogen was charged into the reactor, the pressure in the reactor was increased to 1.2MPa, the temperature in the reactor was increased to 140°C, and the constant temperature and pressure were maintained. The reaction was carried out for 2 hours to prepare a reaction slurry. The pressure in the kettle was reduced to standard atmospheric pressure, and the temperature was reduced to 20 °C. Ferric chloride powder with a mass of 3% of the reaction slurry was added to the reaction kettle, and mixed with a stirrer at a speed of 500 r / min. 30mnin to prepare a prefabrica...
Embodiment 2
[0040] Preparation of prefabricated reaction solution:
[0041] Put the wood chips and crop straws into the oven at a mass ratio of 5:1, and dry them for 5.5 hours at a temperature of 75 °C. After drying, the materials are put into a planetary ball mill. Grind for 35min under the conditions to obtain mixed powder;
[0042] The above-mentioned mixed powder and distilled water were put into the reactor at a mass ratio of 1:10, and nitrogen was charged into the reactor to increase the pressure in the reactor to 1.4MPa, and the temperature in the reactor was increased to 150 ℃, constant temperature and pressure. The reaction was carried out for 2.5 hours to obtain a reaction slurry. The pressure in the kettle was reduced to standard atmospheric pressure, and the temperature was reduced to 22 °C. Ferric chloride powder with a mass of 4% of the reaction slurry was added to the reaction kettle, and mixed with a stirrer at a speed of 550 r / min. Stir 35mnin to prepare a prefabricated ...
Embodiment 3
[0050] Preparation of prefabricated reaction solution:
[0051] Put the wood chips and crop stalks into the oven at a mass ratio of 5:1, and dry them for 6 hours at a temperature of 80 °C. After drying, the materials are put into a planetary ball mill. Grind for 40min under conditions to obtain mixed powder;
[0052] The above mixed powder and distilled water were put into the reactor at a mass ratio of 1:10, and nitrogen was charged into the reactor to increase the pressure in the reactor to 1.6 MPa, and the temperature in the reactor was increased to 160 ° C, constant temperature and pressure. React for 3 hours to prepare a reaction slurry, reduce the pressure in the kettle to standard atmospheric pressure, reduce the temperature to 24 °C, add ferric chloride powder with a mass of 5% of the reaction slurry into the reaction kettle, and mix and stir with a stirrer at a speed of 600r / min 40mnin to prepare a prefabricated reaction solution;
[0053] Preparation of prefabricat...
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Abstract
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