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Dendritic water clarifier for treating polymer-containing and oil-containing sewage and preparation method of dendritic water clarifier

A dendritic, clearing agent technology, applied in water/sewage treatment, water/sludge/sewage treatment, mining wastewater treatment, etc., can solve the problem of poor universality of clearing agent, achieve high interface activity and strong universality , the preparation method is simple

Active Publication Date: 2021-06-22
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The problem to be solved by the present invention is to provide a dendritic water clearing agent for polymer-containing oily sewage treatment and its preparation method in view of the poor universality of the water clearing agent in the treatment of poly-containing oily sewage in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) Synthesis of hydrophilic dendritic matrix

[0020] Add 0.8% polydiethylenetriamine and 0.1% potassium hydroxide to a 2-liter high-temperature and high-pressure reactor, and purge the reactor and pipeline with nitrogen for 20 minutes, and start the agitator while raising the temperature to 85°C, then perform vacuuming operation And continue to heat up to 100°C, stop vacuuming; when the temperature continues to rise to 125°C, start to add 29% ethylene oxide dropwise, control the drop rate and reaction temperature, so that the pressure in the reactor is ≤0.4MP, and the temperature is maintained at 120°C~130°C, until 29% ethylene oxide is added, stop feeding; finally, when the pressure in the reactor drops to negative pressure, cool down and discharge the material, and obtain a hydrophilic dendritic matrix with a certain degree of polymerization.

[0021] (2) Synthetic dendritic water clearing agent

[0022] Add the hydrophilic dendrite matrix and 0.1% potassium hydrox...

Embodiment 2

[0024] Add 1% polytriethylenetetramine and 0.3% sodium hydroxide into a 2-liter high-temperature and high-pressure reactor, purge the reactor and pipeline with nitrogen for 20 minutes, and start the agitator while raising the temperature to 85°C, then perform vacuuming operation And continue to heat up to 100°C, stop vacuuming; when the temperature continues to rise to 125°C, start to add 28.5% ethylene oxide dropwise, control the drop rate and reaction temperature, so that the pressure in the reactor is ≤0.4MP, and the temperature is maintained at 120 ℃ ~ 130 ℃, until 28.5% ethylene oxide is added, stop feeding; finally, when the pressure in the reactor drops to negative pressure, cool down, discharge, and obtain a hydrophilic dendrite matrix with a certain degree of polymerization.

[0025] (2) Synthetic dendritic water clearing agent

[0026] Add the hydrophilic dendrite matrix and 0.2% potassium hydroxide into a 2-liter high-temperature and high-pressure reactor, and purge...

Embodiment 3

[0028] Add 1% polytriethylenetetramine and 0.3% sodium hydroxide into a 2-liter high-temperature and high-pressure reactor, purge the reactor and pipeline with nitrogen for 20 minutes, and start the agitator while raising the temperature to 85°C, then perform vacuuming operation And continue to heat up to 100°C, stop vacuuming; when the temperature continues to rise to 125°C, start to add 28.5% ethylene oxide dropwise, control the drop rate and reaction temperature, so that the pressure in the reactor is ≤0.4MP, and the temperature is maintained at 120 ℃ ~ 130 ℃, until 28.5% ethylene oxide is added, stop feeding; finally, when the pressure in the reactor drops to negative pressure, cool down, discharge, and obtain a hydrophilic dendrite matrix with a certain degree of polymerization.

[0029] (2) Synthetic dendritic water clearing agent

[0030] Add the hydrophilic dendrite matrix and 0.2% potassium hydroxide into a 2-liter high-temperature and high-pressure reactor, and purge...

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PUM

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Abstract

The invention discloses a dendritic water clarifier for treating polymer-containing and oil-containing sewage and a preparation method of the dendritic water clarifier, and relates to a polymer-containing and oil-containing sewage treatment and reinjection technology in an oil and gas field exploitation process. The dendritic water clarifier is prepared from the following components in percentage by mass: 0.5%-1.5% of an initiator, 0.1%-0.5% of a catalyst, 20%-30% of a hydrophilic block and 40%-70% of an oleophylic block. The preparation method comprises the following steps: synthesizing a hydrophilic branch matrix, and synthesizing a dendritic triblock polyether water clarifier on the basis of the hydrophilic branch matrix. The method has no charge property requirement on polymer-containing and oil-containing sewage of different oil fields, and is high in universality; the dendritic multi-block polyether has high interfacial activity and high water cleaning efficiency; raw materials are wide, the preparation method is simple and the cost is low.

Description

technical field [0001] The invention relates to a treatment and reinjection technology for polymer-containing oily sewage during the exploitation of oil and gas fields, in particular to a dendritic water clearing agent for the treatment of polymer-containing oily sewage and a preparation method thereof, belonging to the technical field of petroleum exploitation. Background technique [0002] Water injection and polymer injection development have become key technologies for secondary and tertiary oil recovery in oilfields. With the continuous development of the oil field, the water content and polymer content of the output fluid of the production well gradually increase. After the production fluid is simply separated by the separator, a large amount of polymer-containing and oily sewage has become a difficult problem for oilfield enterprises to deal with. Most of the existing treatment methods are to re-inject polymer-containing oily sewage into the formation through the inje...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/00C08G65/26C02F103/10C02F101/32
CPCC02F1/00C08G65/2624C02F2103/10C02F2101/32
Inventor 陈祥刘平礼王承杰王冠杜娟娄凤成赵立强
Owner SOUTHWEST PETROLEUM UNIV
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