Crude oil demulsifier and preparation method thereof
A crude oil demulsifier and demulsifier technology, applied in chemical dehydration/demulsification, hydrocarbon oil treatment, petroleum industry, etc., can solve the problems of cumbersome synthesis methods, difficult separation, unsatisfactory dehydration effect, etc., and achieve simple synthesis methods , the water quality is clear, and the crude oil is suitable for a wide range of effects
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[0030] The embodiment of the present invention also provides a preparation method of the crude oil demulsifier as described in the above embodiment, comprising the following steps: adding polyoxyethylene polyoxypropylene ether of unsaturated alcohol, initiator and solvent into the reaction vessel, Under the protection of nitrogen, the crude oil demulsifier is obtained by initiating polymerization under the condition that the reaction temperature is 80°C-110°C and the reaction time is 3-8h.
[0031] The above-mentioned embodiment provides a kind of preparation method of crude oil demulsifier, wherein, polyoxyethylene polyoxypropylene ether macromonomer of unsaturated alcohol is obtained by initiating polymerization under the action of solvent and initiator, in the above-mentioned preparation method , in order to avoid the impact of the ambient atmosphere on the reactants, the whole reaction is operated under the protection of an inert gas, preferably nitrogen, and the reaction t...
Embodiment 1
[0038] Put 1 mol of hexenol into the autoclave, add AlCl 3 As a catalyst, vacuumize, N 2 Purge three times, gradually raise the temperature to 110°C, continuously feed propylene oxide and ethylene oxide, and keep the reaction pressure at 0.25MPa. After the feed reaction is completed, vacuumize to remove the reaction residue, and add acetic acid to neutralize, that is Hexenol polyoxypropylene polyoxyethylene ether can be obtained.
[0039] Add hexenol polyoxypropylene polyoxyethylene ether into the reaction container, and then add 80% butyl acetate solvent into it, fill it with nitrogen for protection, raise the temperature to 80°C, and slowly add 3% peroxide The initiator of benzoyl, the temperature is lowered after the polymerization reaction for 8 hours, and the demulsifier A is obtained.
Embodiment 2
[0041] Put 1mol of butenol into the autoclave, add Ca(OH) 2 As a catalyst, vacuumize, N 2 Purge three times, gradually raise the temperature to 140°C, continuously feed propylene oxide, and keep the reaction pressure at 0.3MPa. After the feed reaction is completed, vacuumize to remove the reaction residue, add acetic acid to neutralize, and you can get butenol polyoxyethylene polyoxypropylene ether.
[0042] Add butenyl alcohol polyoxyethylene polyoxypropylene ether into the reaction container, then add xylene solvent with a weight ratio of 50%, fill it with nitrogen for protection, raise the temperature to 90°C, and slowly add 1% azobis The initiator of isobutyronitrile, the temperature is lowered after the polymerization reaction for 4 hours, and the demulsifier B is obtained.
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