A kind of method using phenol as raw material to prepare condensate oil-water emulsion demulsifier

A technology for demulsifier and condensate oil, which is applied in the field of preparation of condensate oil-water emulsion demulsifier, can solve the problems of wasting energy, affecting gas well productivity, sewage environmental protection and safety substandard, etc., and achieves the effect of reducing pollution and reducing the oil content of sewage

Active Publication Date: 2021-03-30
DESHI ENERGY TECH GRP CO LTD +1
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Problems solved by technology

The gas field site often discards it or treats it as sewage. The environmental protection and safety of the sewage are not up to standard. During the development and design, the preparation of condensate oil demulsifier has become the key direction of everyone's research

Method used

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  • A kind of method using phenol as raw material to prepare condensate oil-water emulsion demulsifier

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Embodiment

[0026] (1) Add 200kg of phenol into the reaction kettle, heat up to 90°C, stir for 30 minutes after the product melts, add 2kg of dodecylbenzenesulfonic acid, add 50kg of 1500# solvent oil, and stir for 10 minutes. Lower the temperature to 80°C, and add 66kg of formaldehyde dropwise at 75°C to 80°C. After the dropwise addition, keep the reaction at this temperature for 1 hour. Then raise the temperature and reflux to divide the water, and the temperature is controlled between 125-155°C until no more water is precipitated; the phenolic resin is obtained.

[0027] (2) Cool down the phenolic resin to 90°C, vacuumize until the pressure in the reactor reaches -0.08MPa, the vacuum time should not be less than 30 minutes, and then check the moisture until the moisture is controlled below 0.05%, then stop the vacuum.

[0028] (3) Cool down to 58-60°C, add 160 kg of 10% potassium methoxide solution from the drip tank on the upper part of the reaction kettle, of which 10% potassium meth...

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Abstract

The invention provides a method for preparing a condensed oil-water emulsion emulsion-breaking agent by taking phenol as a raw material. The method comprises the following steps: adding the phenol into a reaction tank; raising the temperature and stirring; adding a catalyst and 1500# solvent oil; cooling and dropwise adding formaldehyde; raising the temperature, reflowing and distributing water toobtain phenolic resin; cooling the phenolic resin and vacuumizing the reaction tank; adding a potassium methoxide solution, stirring, vacuumizing and raising the temperature; inflating nitrogen gas to normal pressure; dropwise adding propylene oxide for a plurality of times; keeping temperature and pressure; vacuumizing and cooling; after dropwise adding fumaric acid, inflating the nitrogen gas and raising the temperature to obtain an esterified object; adding the esterified object into a reaction kettle; vacuumizing and raising the temperature; adding p-toluene sulfonic acid and stirring; adding monoethanolamine and stirring; adding methanol and stirring to obtain an emulsion-breaking agent. The method provided by the invention has the advantages that the stubborn emulsified liquid problem in a natural gas well mining field is solved through a prepared emulsifier; the oil content of sewage treated by natural gas mining liquid is greatly reduced and pollution, caused by sewage emission, to the environment is reduced; future worries for further development of condensed oil gas are solved.

Description

technical field [0001] The invention relates to the field of chemical treatment agents, in particular to a method for preparing a condensate oil-water emulsion breaker by using octylphenol as a raw material. Background technique [0002] Exploration practice in the past ten years has shown that in some oil and gas basins in my country, many natural gas reservoirs are associated with a certain amount of condensate oil (or light oil). It is a gas reservoir in which the associated liquid hydrocarbons in natural gas are in a supercritical state under high pressure and high temperature conditions in the formation. When it is mined to the ground, due to the decrease in pressure and temperature, the liquid product condensed by reverse phase condensation is called condensate. , the main component is a mixture of C5 to C8 hydrocarbons, and contains a small amount of hydrocarbons larger than C8 and impurities such as sulfur dioxide, thiophenes, mercaptans, sulfides and polysulfides, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G8/10C10G33/04C08G65/26
CPCC10G33/04
Inventor 谷之辉崔仕章王黎明高瑞美于长禄张向红
Owner DESHI ENERGY TECH GRP CO LTD
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