Antiscalant and fungicide for oilfield produced water
A technology of produced water and bactericide, which is used in mining wastewater treatment, descaling and water softening, water/sludge/sewage treatment, etc. , The effect of lattice distortion is good, and the development cost is saved
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Embodiment 1
[0016] The preparation method of isoacrylic phosphoric acid and p-styrene sulfonic acid copolymer is as follows:
[0017] (1) Weigh 1 mole of p-styrenesulfonic acid, add 2 moles of deionized water, and stir in a water bath at 40-50°C until completely dissolved; (2) After the solution is cooled, pour it into Then add 0.4 mole of isopropenyl phosphoric acid to the three-port reactor with reflux device, dropping funnel and thermometer, and turn on the electric stirring to make it dissolve evenly; heat slowly, and pass nitrogen gas for 15 minutes, and the temperature rises to 75°C and remains stable , add potassium persulfate dropwise, the amount of addition is about 10% of the total mass of p-styrenesulfonic acid and isoacrylphosphoric acid, and pay attention to control the rate of addition, the time of dropping potassium persulfate is controlled at about 1.5h, after the addition is completed, Continue the reaction for 5-6 hours to obtain a brownish-yellow transparent viscous liq...
Embodiment 2
[0019] The preparation method of 2-butene phosphoric acid and p-styrenesulfonic acid copolymer is as follows:
[0020] (1) Weigh 1 mole of p-styrenesulfonic acid, add 3 moles of deionized water, and stir in a water bath at 40-50°C until completely dissolved; (2) After the solution is cooled, pour it into Then add 0.4 mole of 2-butenyl phosphoric acid into the three-port reactor with reflux device, dropping funnel and thermometer, and turn on the electric stirring to make it dissolve evenly; heat slowly, and feed nitrogen gas for 15min, the temperature rises to 75°C and To keep stable, add H dropwise 2 o 2 , the dropping amount is about 10% of the total mass of p-styrenesulfonic acid and 2-butenyl phosphoric acid, and pay attention to controlling the dropping speed, and the time for dropping potassium persulfate is controlled at about 1.5h. After the dropping is completed, continue the reaction for 5- 6h, a brownish-yellow transparent viscous liquid is obtained; (3) Pour the ...
Embodiment 3
[0022] A kind of scale inhibitor and bactericide for oil field produced water, the preparation method is: take 30kg of the copolymer prepared in Example 1 and put it in a stirring container, add 10kg of PESA, mix evenly, then add 34.7kg of tap water, then add metronidazole 0.3kg, glutaraldehyde 5kg, and finally add 20kg of dodecyl dimethyl benzyl ammonium chloride, stir evenly to obtain the finished product of antiscalant and fungicide.
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