A kind of preparation technology of coking sulfur-containing sewage demulsifier
A preparation process and demulsifier technology, which is applied in the field of preparation of coking sulfur-containing sewage demulsifiers, can solve the problems of oily and other problems, achieve strong demulsification, improve the ability of oil-water separation, and reduce the effect of oil content
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Embodiment 1
[0019] The first step is to prepare polyether initiator: use long carbon chain organic acid and polyethylene polyamine to carry out polycondensation reaction in the presence of aromatic hydrocarbon solvent, heat while polycondensation reaction, gradually raise the temperature to 180 ° C ~ 250 ° C, keep reflux, The reflux adopts negative pressure distillation to remove the water and aromatic hydrocarbon solvent generated by the reaction to obtain a polyether initiator;
[0020] The second step is to prepare ethylene oxide-propylene oxide block copolymer: under negative pressure, add propylene oxide and ethylene oxide to the polyether initiator in sequence to control the propylene oxide and ethylene oxide. The addition rate of alkane keeps the reaction temperature at 120°C to 150°C, and the reaction pressure at no higher than 0.25MPa, so as to ensure uniform and smooth reaction, and obtain ethylene oxide-propylene oxide block copolymer;
[0021] The third step is to prepare a po...
Embodiment 2
[0024] The long carbon chain organic acid is oleic acid or stearic acid, the long carbon chain organic acid accounts for 30-35% of the total mass of the first-step reactant, and the polyethylene polyamine accounts for 40-45% of the total mass of the first-step reactant. %, the aromatic hydrocarbon solvent accounts for 20% to 30% of the total mass of the first step reactant, and the total mass of the first step reactant refers to the total mass of the long carbon chain organic acid, polyethylene polyamine and aromatic hydrocarbon solvent. The sum of the proportions by weight of each component in the one-step reactant is 100%.
Embodiment 3
[0026] The propylene oxide accounts for 60-65% of the total mass of the reactants in the second step, the ethylene oxide accounts for 34.5-39.8% of the total mass of the reactants in the second step, and the polyether initiator accounts for the second step 0.2~0.5% of the total mass of the reactants, the total mass of the reactants in the second step refers to the total mass of the polyether initiator, propylene oxide and ethylene oxide, and the components in the second step reactants are formulated by weight The sum of the ratios is 100%.
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