Efficient de-oiling agent for water generated by oil field polymer flooding

A degreaser and polymer technology, which is used in grease/oily substance/float removal devices, flocculation/sedimentation water/sewage treatment, liquid separation, etc. It is suitable for the degreasing treatment of polymer-containing sewage, and achieves the effects of strong neutralization ability, improved degreasing efficiency and high degreasing efficiency.

Active Publication Date: 2017-01-11
山东瑞多节能环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the complex and changeable methods of ground implementation, the composition of sewage has obvious regional and timeliness
[0006] Patent ZL201410455664.7 "A degreaser for oilfield binary compound flooding produced sewage" uses acryloyloxyethyl dimethylamine, chloroalkane, acrylamide, N,N'-methylenebis Acrylamide, ammonium persulfate and sodium sulfite reacted. The degreasing agent has the characteristics of less dosage, low cost, high degreasing rate, high degreasing efficiency, simple preparation and low cost. However, the degreasing agent belongs to Reverse demulsifier, the demulsification effect on oil-in-water emulsion is poor, and at the same time, the degreasing agent is not suitable for degreasing treatment of sewage containing poly

Method used

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  • Efficient de-oiling agent for water generated by oil field polymer flooding
  • Efficient de-oiling agent for water generated by oil field polymer flooding
  • Efficient de-oiling agent for water generated by oil field polymer flooding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: Degreaser A 1 and its preparation method

[0025] (1) Degreaser A 1 The composition and components are as follows:

[0026] Degreaser A 1 It is an intermediate formed by the reaction of n-decyl aldehyde with bromobutylene epoxy under the catalysis of boron trifluoride ether solution, and then reacted with pyrimidine to form a cationic degreasing agent. Its molecular formula is as follows:

[0027]

[0028] Wherein, the molar ratio of n-decyl aldehyde, epoxybromobutane and pyrimidine is 1:1.2:0.9.

[0029] (2) Degreaser A 1 The preparation method is as follows:

[0030] ①Add 1 mol of n-decylaldehyde to a three-necked flask equipped with an electric stirrer, reflux condenser and thermometer, then add 1872g of carbon tetrachloride, heat up to 30°C, stir for 10min at a stirring rate of 300rpm, then add 0.078g The mass concentration is 30% boron trifluoride ethyl ether solution, 1.2mol of epoxybromobutane is placed in the constant pressure dropping fun...

Embodiment 2

[0033] Embodiment 2: Degreaser A 2 and its preparation method

[0034] (1) Degreaser A 2 The composition and components are as follows:

[0035] Degreaser A 2 It is an intermediate formed by the reaction of n-decyl aldehyde with bromobutylene epoxy under the catalysis of boron trifluoride ether solution, and then reacted with pyrimidine to form a cationic degreasing agent. Its molecular formula is as follows:

[0036]

[0037] Wherein, the molar ratio of n-decyl aldehyde, epoxybromobutane and pyrimidine is 1:0.75:0.5.

[0038] (2) Degreaser A 2 The preparation method is as follows:

[0039] ① Add 1 mol of n-decyl aldehyde to a three-necked flask equipped with an electric stirrer, a reflux condenser and a thermometer, then add 1560 g of acetonitrile, heat up to 32 ° C, stir at a stirring rate of 350 rpm for 25 min, and then add 0.10 g of 30% boron trifluoride ether solution, put 0.75mol epoxybromobutane in a constant pressure dropping funnel, control the dropping rate ...

Embodiment 3

[0042] Embodiment 3: Degreaser A 3 and its preparation method

[0043] (1) Degreaser A 3 The composition and components are as follows:

[0044] Degreaser A 3 It is an intermediate formed by the reaction of n-decyl aldehyde with bromobutylene epoxy under the catalysis of boron trifluoride ether solution, and then reacted with pyrimidine to form a cationic degreasing agent. Its molecular formula is as follows:

[0045]

[0046] Wherein, the molar ratio of n-decyl aldehyde, epoxybromobutane and pyrimidine is 1:1.5:2.

[0047] (2) Degreaser A 3 The preparation method is as follows:

[0048] ①Add 1 mol of n-decyl aldehyde to a three-necked flask equipped with an electric stirrer, reflux condenser and thermometer, then add 2340g of carbon tetrachloride, heat up to 35°C, stir for 30min at a stirring rate of 400rpm, then add 0.156g The mass concentration is 30% boron trifluoride ether solution, 1.5mol of epoxybromobutane is placed in the constant pressure dropping funnel, th...

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PUM

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Abstract

The invention belongs to the technical field of oil field wastewater treatment and specifically relates to an efficient de-oiling agent for water generated by oil field polymer flooding. The de-oiling agent is a cationic de-oiling agent which is generated according to the steps: causing n-capric aldehyde react with epoxy bromobutane under the catalysis of a boron trifluoride diethyl etherate solution, thereby acquiring a midbody, and then reacting with pyrimidine, wherein the mole ratio of n-capric aldehyde to epoxy bromobutane to pyrimidine is 1:(0.75-1.5):(0.5-2), preferably, 1:1.2:0.9. The de-oiling agent provided by the invention has the characteristics of simple preparation process, low cost, high adaptability and excellent de-oiling effect; the de-oiling rate is 97% or above; the efficient de-oiling agent can be widely applied to the de-oiling process of the water generated by oil field polymer flooding.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a high-efficiency degreaser for oilfield polymer flooding produced water. Background technique [0002] Polymer flooding technology has achieved good oil-increasing effect. Polyacrylamide (PAM) is contained in polymer flooding. Due to the similarity between PAM and emulsifier molecules, the molecules in the system where PAM exists are concentrated at the oil-water interface, forming a composite film with greater strength and good elasticity together with emulsifier molecules. Based on the above characteristics, the oil content index of the wastewater produced by polymer flooding is relatively high. [0003] With the expansion of the application scale of polymer flooding, the following problem is the treatment of polymer flooding sewage. The sewage of polymer flooding not only has high oil content, but also contains a large amount of polymers. The existence...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/40C02F1/52
Inventor 吕小芳
Owner 山东瑞多节能环保科技有限公司
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