Oil field sewage flocculant and preparation method thereof
An oilfield sewage and flocculant technology, applied in separation methods, flocculation/sedimentation water/sewage treatment, mining wastewater treatment, etc., can solve the problems of clogging of cationic flocculants, affecting people's health, loss and other problems
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Embodiment 1
[0031] A flocculant for oilfield sewage, characterized in that it comprises the following components in mass percent: polymer 88%, silica airgel / diethylenetriaminopropyl trimethoxysilane / glycidyl trimethyl chloride Ammonium 12%; the polymer is composed of sunflower oleyl pyridine quaternary ammonium salt / ethylenediamine modified oxidized walnut powder, vinyl(trifluoromethyl)dimethylsilane and 2-acrylamido-methylpropanesulfonate polymerized by acid.
[0032] Preferably, the preparation method of the sunflower oil base pyridinium quaternary ammonium salt / ethylenediamine modified oxidized walnut powder comprises the steps:
[0033] Step I, preparation of oxidized walnut shell powder: crush the walnut shell, pass through a 50-mesh sieve, soak in water for 36 hours, filter, add 1mol / L sodium hydroxide solution, alkalinize for 24 hours, filter, and wash the filter cake with water , dried to obtain walnut shell powder, then added to isopropanol, ultrasonicated for 5 minutes, added s...
Embodiment 2
[0045] A flocculant for oilfield sewage, characterized in that it comprises the following components in mass percent: polymer 89%, silica airgel / diethylenetriaminopropyl trimethoxysilane / glycidyl trimethyl chloride Ammonium 11%; the polymer is composed of sunflower oleyl pyridinium quaternary ammonium salt / ethylenediamine modified oxidized walnut powder, vinyl(trifluoromethyl)dimethylsilane and 2-acrylamido-methylpropanesulfonate polymerized by acid.
[0046] Preferably, the preparation method of the sunflower oil base pyridinium quaternary ammonium salt / ethylenediamine modified oxidized walnut powder comprises the steps:
[0047] Step I, preparation of oxidized walnut shell powder: crush the walnut shell, pass through a 60-mesh sieve, soak in water for 39 hours, filter, add 1mol / L sodium hydroxide solution, alkalinize for 27 hours, filter, and wash the filter cake with water , dried to obtain walnut shell powder, then added to isopropanol, ultrasonicated for 6 minutes, added...
Embodiment 3
[0059] A flocculant for oilfield sewage, characterized in that it comprises the following components in mass percent: polymer 90%, silica airgel / diethylenetriaminopropyl trimethoxysilane / glycidyl trimethyl chloride Ammonium 10%; the polymer is composed of sunflower oleyl pyridinium quaternary ammonium salt / ethylenediamine modified oxidized walnut powder, vinyl(trifluoromethyl)dimethylsilane and 2-acrylamido-methylpropanesulfonate polymerized by acid.
[0060] Preferably, the preparation method of the sunflower oil base pyridinium quaternary ammonium salt / ethylenediamine modified oxidized walnut powder comprises the steps:
[0061] Step I, preparation of oxidized walnut shell powder: crush the walnut shell, pass through a 70-mesh sieve, soak in water for 42 hours, filter, add 1mol / L sodium hydroxide solution, alkalinize for 30 hours, filter, and wash the filter cake with water , dried to obtain walnut shell powder, then added to isopropanol, ultrasonicated for 7 minutes, added...
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