Transparent nanometer calcium carbonate oil phase dispersion and its preparation method by supergravity method
A nano-calcium carbonate, super-gravity method, which is applied in the petroleum industry, dyeing low-molecular-weight organic compounds, fibrous fillers, etc., can solve the problems of difficult dispersion and poor stability of nano-calcium carbonate.
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Embodiment 1
[0100] (1) Surfactant synthesis section
[0101] 1) Put 410g of petroleum sulfonic acid into the stirring tank at one time, pump 95ml of sodium hydroxide (70wt%) in the lye storage tank into the stirring tank at a flow rate of 120ml / min, start the stirring tank at the same time to start stirring, and carry out the neutralization reaction. The reaction temperature is controlled by a constant temperature water tank at 50°C, and the pH at the end point is 8.2;
[0102] 2) Pump 500g of ethanol into 1) the stirring tank at a flow rate of 200ml / min, and stir evenly until the reactants are completely dissolved;
[0103] 3) Pour the above mixture into the extraction and separation tank, and after standing for 18 hours, keep the clear liquid;
[0104] 4) Pour the clear liquid into a vacuum distillation tank, the distillation temperature is 65° C., and the pressure is 0.08 MPa, and the solvent is removed to obtain a petroleum sulfonate surfactant. The fraction can be recycled and then ...
Embodiment 2
[0122] (1) Surfactant synthesis section
[0123] 1) Put 480g of alkylbenzenesulfonic acid into the stirred tank at one time, pump 100ml of ammonia water (analytical pure) in the lye storage tank into the reactor at a flow rate of 120ml / min, and start the reactor to stir at the same time, and carry out the neutralization reaction. The reaction temperature is controlled by a constant temperature water tank at 60°C, and the final pH is 8.6;
[0124] 2) Pump 550g of ethanol into 1) the stirring tank at a flow rate of 200ml / min, and stir evenly until the reactants are completely dissolved;
[0125] 3) Pour the above mixture into the extraction and separation tank, and leave the clear liquid after standing for 24 hours to separate layers;
[0126]4) Pour the clear liquid into a vacuum distillation tank, the distillation temperature is 60° C., and the pressure is 0.08 MPa, and the solvent is removed to obtain an alkylbenzene sulfonate surfactant. The fraction can be recycled and fra...
Embodiment 3
[0143] (1) Surfactant synthesis section
[0144] 1) Put 800g of petroleum sulfonic acid into the stirred tank at one time, pump 200ml of ammonia water (analytical pure) in the lye storage tank into the reactor at a flow rate of 150ml / min, start the reactor at the same time to start stirring, and carry out the neutralization reaction. The water tank controls the reaction temperature to 60°C, and the final pH is 8.3;
[0145] 2) Pump 850g of n-butanol into 1) the stirring tank at a flow rate of 200ml / min, and stir evenly until the reactants are completely dissolved;
[0146] 3) Pour the above mixture into the extraction and separation tank, and leave the clear liquid after standing for 20 hours for stratification;
[0147] 4) Pour the clear liquid into a vacuum distillation tank, the distillation temperature is 85° C., and the pressure is 0.09 MPa, and the solvent is removed to obtain a petroleum sulfonate surfactant. The fraction can be recycled and then fractionated into n-bu...
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