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Preparation method of demulsifier polyether intermediate compound

An intermediate and demulsifier technology, which is applied in the field of preparation of demulsifier polyether intermediates, can solve the problems of energy waste, intractable treatment, high treatment cost, etc., and achieves reduction of environmental pollution, good economic and social benefits , The effect of reducing the cost of demulsification and dehydration

Active Publication Date: 2013-05-22
BINZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The degree of emulsification of the produced crude oil is further enhanced, and there are highly alkaline crude oil, high acid value crude oil, heavy oil, extra heavy oil, high pour point crude oil, tertiary oil recovery crude oil, high salinity water quality crude oil, etc. Crude oil and water form oil-in-water (O / W) and multiple (O / W / O, W / O / W) emulsions, resulting in differences in the state of crude oil, and the oil field currently has high demulsification and dehydration temperature, which increases the Large amount of sewage, unsatisfactory discharge of sewage, etc., resulting in a huge waste of energy
Moreover, it is difficult for conventional demulsifiers to deal with such produced fluid, which makes the treatment cost high

Method used

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  • Preparation method of demulsifier polyether intermediate compound
  • Preparation method of demulsifier polyether intermediate compound

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preparation example Construction

[0015] Preparation of polyether intermediates

[0016] 1. Main raw materials

[0017] EO, first-class industrial product; PO, first-class industrial product; KOH, first-class industrial product; linking agent, first-class industrial product; regulator, self-made; solvent, qualified industrial product; organic phenol, first-class industrial product; organic Amines, first-class industrial products; formaldehyde, first-class industrial products.

[0018] 2. The main equipment of the small test

[0019] G-type high-pressure stainless steel reaction kettle 2 L, vacuum pump 1406, glass constant temperature water bath.

[0020] 3. Synthesis principle

[0021] Under the action of a catalyst, the initiator polymerizes with POEO to form a polyether, which can be expressed by the following formula:

[0022] WF-(OH)x+nPO+mEO→WF[(PO)n(EO)m]x,

[0023] AF-(NH 2 )y+nPO+mEO→AF[(PO)n(EO)m]y,

[0024] WF-(OH)x WF resin with polyhydroxyl,

[0025] AF-(NH 2 ) y AF resins with polyamine g...

Embodiment 1

[0034] Preparation of initiator thermoplastic resin: the C 4-9 Organic phenol and diethylenetriamine are mixed in a mass ratio of 1:2, heated and controlled at 30-40°C, stirred for 30 minutes, and the mass ratio C 4-9 Organic phenol: formaldehyde is added dropwise with formaldehyde at a ratio of 1:2. After the dropwise addition is completed, the temperature is raised to 150-170°C, and the temperature is controlled for 3 hours to react to obtain a new type of thermoplastic resin.

[0035] Preparation of polyether intermediate: Add sodium hydroxide to the thermoplastic resin, stir while heating, heat to 90°C, turn on the vacuum pump for 30 minutes, control the temperature at 115-135°C, add propylene oxide, epoxy After feeding the ethane, react at a temperature of 115-135°C and a pressure of 0.1-0.3Mpa for 30 minutes, lower the temperature to 90°C, and turn on the vacuum pump for 30 minutes to obtain a polyether intermediate.

[0036] The amount of each component added is 1:50:2...

Embodiment 2

[0038] Preparation of initiator thermoplastic resin: the C 4-9 Organic phenol and triethylenetetramine are mixed according to the mass ratio of 1:3, heated and controlled at 30-40°C, stirred for 30 minutes, according to the mass ratio C 4-9 Formaldehyde is added dropwise at a ratio of organic phenol: formaldehyde of 1:6. After the dropwise addition, the temperature is raised to 150-170°C, and the temperature is controlled for 3 hours to obtain a new thermoplastic resin.

[0039] Preparation of polyether intermediate: Add potassium hydroxide to the thermoplastic resin, stir while heating, heat to 90°C, turn on the vacuum pump for 30 minutes, control the temperature at 115-135°C, and continuously add propylene oxide, epoxy After feeding the ethane, react at a temperature of 115-135°C and a pressure of 0.1-0.3Mpa for 30 minutes, lower the temperature to 90°C, and turn on the vacuum pump for 30 minutes to obtain a polyether intermediate.

[0040] Wherein the addition amount of ea...

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Abstract

The invention relates to a preparation method of a demulsifier polyether intermediate compound, which comprises the following steps: adding a catalyst into a thermoplastic resin, stirring while heating, heating to 90 DEG C, starting a vacuum pump, and performing vacuum treatment for 30 minutes; controlling the temperature at 115-135 DEG C, respectively adding epoxypropane and epoxyethane continuously, and reacting for 30 minutes under the conditions that the temperature is 115-135 DEG C and the pressure is 0.1-0.3 Mpa after the addition is finished; and cooling to 90 DEG C, starting the vacuum pump, and performing vacuum treatment for 30 minutes to obtain the polyether intermediate compound. The intermediate compound prepared by the method can improve multiple indices such as dehydration rate and dehydration speed of the synthesized demulsifier, oil content and oil-water interface of extracted sewage and the like, and has favorable market prospects.

Description

technical field [0001] The invention relates to the technical field of oil demulsifiers, in particular to a preparation method of a demulsifier polyether intermediate. Background technique [0002] In recent years, with the continuous development of oilfields, the oilfields are gradually aging, and the water content in the produced crude oil is getting higher and higher, and some crude oils are even becoming heavier. In order to improve oil recovery, each oil area adopts different enhanced oil recovery technologies according to the formation characteristics, such as alkali flooding, acid fracturing, foam flooding, polymer flooding, steam flooding, surfactant flooding, surfactant-polymer II, etc. The application of these technologies, such as elemental flooding and alkali-surfactant-polymer ASP flooding, provides effective measures for oilfield production stabilization and increase, and has achieved huge economic benefits. However, due to the implementation of these measures...

Claims

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Application Information

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IPC IPC(8): C08G65/26C08G65/28C08G14/12C08G14/073C10G33/04
Inventor 刘元伟马艳张红红范传刚罗丛杨仲年
Owner BINZHOU UNIV
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