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Thick oil demulsifier and its prepn

A demulsifier and viscous oil technology, applied in the direction of hydrocarbon oil dehydration/demulsification, petroleum industry, etc., to facilitate industrial production, speed up demulsification and dehydration, and reduce elasticity and viscosity.

Active Publication Date: 2006-08-02
LIAONING OXIRANCHEM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Method used

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  • Thick oil demulsifier and its prepn
  • Thick oil demulsifier and its prepn

Examples

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Embodiment 1

[0024] Example 1 Put 120kg of naphthol and 650kg of diethylenetriamine into the reaction kettle, raise the temperature to 80°C, stir evenly, slowly add 230kg of 37% formaldehyde solution dropwise, and the dropping time is 60min. The time is 60 minutes. Then dehydrate at a temperature of 180°C, a pressure of -0.09Mpa, and a reaction time of 180 minutes. After the reaction is completed, a reddish-brown viscous phenolamine resin is obtained. Add 50kg of this phenolic amine resin and 30kg of catalyst (compounded by calcium oxide and silicon dioxide with a weight ratio of 9.5:0.5) into the autoclave, seal it, replace it with nitrogen, raise the temperature and start stirring. When the temperature in the kettle reaches 130-140°C, add 670kg of propylene oxide and 250kg of ethylene oxide, and control the reaction temperature at 160-180°C and the pressure in the kettle at 0.3-0.6MPa. When the proportioning amount of propylene oxide and propylene oxide is added, the reaction is complet...

Embodiment 2

[0025] Example 2 Put 100kg of octylphenol and 650kg of tetraethylenepentamine into the reaction kettle, raise the temperature to 50°C, stir evenly, slowly add 250kg of 40% formaldehyde solution dropwise, the dropping time is 60min, and keep the temperature at 60°C after the addition. The reaction time is 60min. Then dehydrate at a temperature of 100°C and a pressure of -0.08Mpa, and the reaction time is 160 minutes. After the reaction is completed, a reddish-brown viscous phenolamine resin is obtained. Add 130kg of phenolamine resin and 20kg of catalyst (compounded by calcium hydroxide and oxalic acid with a weight ratio of 9:1) into the autoclave, seal and replace with nitrogen, heat up and start stirring, when the temperature in the still reaches 80 At ~90°C, add 590kg of propylene oxide and 260kg of ethylene oxide, control the reaction temperature at 80-100°C and the pressure in the kettle at 0.3-0.6Mpa, when the proportioning amount of propylene oxide and ethylene oxide is...

Embodiment 3

[0026]Example 3 150kg of bisphenol A and 550kg of tetraethylenepentamine were heated up to 70°C, stirred evenly, and 300kg of 35% formaldehyde solution was slowly added for 60 minutes. After the addition, the constant temperature was 80°C, and the reaction time was 60 minutes. Then dehydrate at a temperature of 120°C and a pressure of -0.09Mpa, and the reaction time is 160 minutes. After the reaction is completed, a reddish-brown viscous phenolamine resin is obtained. Add 70kg of phenolamine resin and 20kg of catalyst (compounded by calcium sulfate and tartaric acid with a weight ratio of 9.59:10.5) into the autoclave. After sealing and nitrogen replacement, heat up and start stirring. When the temperature in the autoclave reaches 130~ At 140°C, add 550kg of propylene oxide and 360kg of ethylene oxide, control the reaction temperature at 140-150°C and the pressure inside the kettle at 0.3-0.6Mpa. When the pressure is gradually lowered until it stops falling for 30 minutes, the...

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Abstract

The present invention is one kind of thick oil demulsifier and its preparation process, and belongs to the field of petrochemical technology. The present invention features that phenol-amine resin as the initial material is block polymerized with epoxy propane ad epoxy ethane under the action of catalyst to obtain stereo netted macromolecular polyether as the thick oil demulsifier. The polyether as the thick oil demulsifier may be further chain expanded for even high demulsifying effect. The thick oil demulsifier can reach the oil-water interface fast to lower the elasticity and viscosity of the interface film, speed the aggregation of liquid drops and demulsify effectively. The thick oil demulsifier has simple preparation process, is suitable for industrial production, and may be used in the efficient dewatering of oil field produced liquid with different water contents.

Description

technical field [0001] The invention belongs to the technical field of chemicals used in the petroleum industry, and in particular relates to a polyether demulsifier used for demulsification and dehydration of heavy oil and extra heavy oil and a preparation method of the demulsifier. Background technique [0002] Demulsifier is one of the most widely used oilfield chemicals in the petroleum industry, mainly used in the gathering, transportation and refining process of crude oil. At the end of the 1990s, all major oil fields in my country have entered the late stage of secondary oil recovery and the stage of tertiary oil recovery. In order to maintain crude oil production, various oilfields have taken measures to increase water injection and increase fluid production in oil wells on a large scale, and the water content of crude oil production fluid and the proportion of heavy oil have risen rapidly. [0003] At present, most oilfield demulsifiers in my country are block copo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G33/00
Inventor 朱建民刘兆滨董振鹏仲崇纲
Owner LIAONING OXIRANCHEM INC
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