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Preparation method of polymer modified demulsifier with broad spectrum

A high-molecular and broad-spectrum technology, applied in the field of polymers, can solve problems such as differences in physical and chemical properties, and achieve the effect of reducing dosage, reducing dosage, and increasing benefits

Inactive Publication Date: 2011-12-07
上海九元石油化工有限公司
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  • Abstract
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  • Claims
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Problems solved by technology

However, judging from the current application status of demulsifiers, there are still very few broad-spectrum demulsifiers, and for the same demulsifier product, products produced at different times and in different batches still have some differences in physical and chemical properties and performance. difference

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  • Preparation method of polymer modified demulsifier with broad spectrum
  • Preparation method of polymer modified demulsifier with broad spectrum
  • Preparation method of polymer modified demulsifier with broad spectrum

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Embodiment Construction

[0011] The present invention will be further described below.

[0012] 1. Preparation method of polyol ethylene oxide propylene oxide high polymer

[0013] 1. Raw material ratio:

[0014] Octadecanol: propylene oxide=1~10: 2~60 (ratio by weight)

[0015] Propylene oxide: ethylene oxide=2~8: 8~2 (ratio by weight and number)

[0016] The amount of DMC complex catalyst accounted for raw materials: 0.5 ~ 2% (wt%)

[0017] Reaction temperature: 120-180°C.

[0018] The general formula of described DMC complex catalyst is: M 3 [M'(CN) 6 ] 2 ·xA·yB, where M is the metal ion Zn 2+ , M′ is Co 3+ , A is ZnCl 2 , B is ethylene glycol dimethyl ether, wherein x, y are the numbers representing A and B respectively.

[0019] 2. Preparation process:

[0020] Add the measured stearyl alcohol and DMC complex catalyst into the autoclave, seal the autoclave, purge with nitrogen to get rid of the air in the autoclave, after vacuuming, raise the temperature of the autoclave to the reactio...

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Abstract

The invention relates to the technical field of macromolecules, in particular to a preparation method of a broad-spectrum macromolecular modified demulsifier, which is characterized in that the following preparation steps are adopted: (1) a multi-component demulsifier is prepared by using a DMC double metal cyanide suture catalytic system Alcohol oxide ethylene oxide propylene high polymer; (2) preparation of acrylic acid modified polyether; (3) compounding and blending: the above prepared polyol oxyethylene oxide propylene high polymer 15-30wt%, acrylic acid modified polyether 35 -25wt%, adding 50wt% of additives for compounding and blending. Compared with the prior art, the present invention has two original demulsifiers respectively modified by DMC double metal complex catalyst system and acrylic acid, and then compounded, and the finished demulsifier can significantly reduce the amount of demulsifier , reduce the amount of product added, and the rate of oil in the cut water after removal is low, and can be directly discharged without water treatment, which not only reduces the pressure on environmental protection, but also increases the efficiency of the refinery.

Description

[technical field] [0001] The invention relates to the technical field of polymers, in particular to a preparation method of a broad-spectrum polymer modified demulsifier. [Background technique] [0002] Due to the extensive application of enhanced oil recovery technology in domestic oilfields, the components of crude oil transported to refineries have become increasingly complex, and crude oil demulsifiers have become essential chemical reagents for refineries. With the increasing demand for demulsifiers, the performance requirements are also more stringent. However, judging from the current application status of demulsifiers, there are still very few broad-spectrum demulsifiers, and for the same demulsifier product, products produced at different times and in different batches still have some differences in physical and chemical properties and performance. difference. This requires our scientific researchers to develop new products that not only have the stability of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01F17/44B01F17/42C10G33/04C09K23/44C09K23/42
Inventor 盛小飞慕锴
Owner 上海九元石油化工有限公司
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