Cationic type degreaser for polymer flooding produced water treatment

A cationic, effluent treatment technology, applied in mining wastewater treatment, added substance water/sewage treatment, water/sewage treatment, etc. It can meet the environmental protection and oilfield development, easy to obtain and transport and save, and improve the efficiency of oil removal.

Active Publication Date: 2017-04-19
山东上禾中创科技成果转化有限公司
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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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  • Cationic type degreaser for polymer flooding produced water treatment
  • Cationic type degreaser for polymer flooding produced water treatment
  • Cationic type degreaser for polymer flooding produced water treatment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1: Degreaser B 1 and its preparation method

[0032] (1) Degreaser B 1 The composition and components are as follows:

[0033] The degreasing agent is formed by the reaction of n-decyl aldehyde with bromobutane epoxy under the catalysis of boron trifluoride ether solution to form an intermediate, and then reacts with quinoline to form a cationic degreasing agent. Its molecular formula is as follows:

[0034]

[0035] Wherein, the molar ratio of n-decyl aldehyde, epoxybromobutane and quinoline is 1:0.75:0.6.

[0036] (2) Degreaser B 1 The preparation method is as follows:

[0037] ①Add 1 mol of n-decyl aldehyde to a four-necked flask equipped with a reflux condenser, stirrer and thermometer, then add 2340g of carbon tetrachloride, heat up to 38°C, stir for 10min at a stirring rate of 160rpm, then add 0.156g For a boron trifluoride ether solution with a mass concentration of 30%, place 0.75 mol of epoxybromobutane in a constant pressure dropping funnel,...

Embodiment 2

[0040] Embodiment 2: Degreaser B 2 and its preparation method

[0041] (1) Degreaser B 2 The composition and components are as follows:

[0042] The degreasing agent is formed by the reaction of n-decyl aldehyde with bromobutane epoxy under the catalysis of boron trifluoride ether solution to form an intermediate, and then reacts with quinoline to form a cationic degreasing agent. Its molecular formula is as follows:

[0043]

[0044] Wherein, the molar ratio of n-decyl aldehyde, epoxybromobutane and quinoline is 1:1.25:0.8.

[0045] (2) Degreaser B 2 The preparation method is as follows:

[0046] ①Add 1 mol of n-decylaldehyde to a four-necked flask equipped with a reflux condenser, agitator and a thermometer, then add 2750g of acetonitrile, heat up to 35°C, stir at a stirring rate of 100rpm for 15min, then add 0.312g of acetonitrile with a mass concentration of 30 % boron trifluoride ether solution, put 1.25mol of epoxybromobutane in a constant pressure dropping funnel,...

Embodiment 3

[0049] Embodiment 3: Degreaser B 3 and its preparation method

[0050] (1) Degreaser B 3 The composition and components are as follows:

[0051] The degreasing agent is formed by the reaction of n-decyl aldehyde with bromobutane epoxy under the catalysis of boron trifluoride ether solution to form an intermediate, and then reacts with quinoline to form a cationic degreasing agent. Its molecular formula is as follows:

[0052]

[0053] Wherein, the molar ratio of n-decyl aldehyde, epoxybromobutane and quinoline is 1:1.5:1.2.

[0054] (2) Degreaser B 3 The preparation method is as follows:

[0055] ①Add 1 mol of n-decylaldehyde to a four-neck flask equipped with a reflux condenser, agitator and a thermometer, then add 3120g of carbon tetrachloride, heat up to 40°C, stir for 20min at a stirring rate of 200rpm, then add 0.225g For a boron trifluoride ether solution with a mass concentration of 30%, place 1.5 mol of epoxybromobutane in a constant-pressure dropping funnel, c...

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Abstract

The invention belongs to the technical field of oil field wastewater treatment, and particularly relates to a cationic type degreaser for polymer flooding produced water treatment. The degreaser is characterized in that n-capric aldehyde reacts with epoxy bromobutane under catalysis of a boron trifluoride diethyl etherate solution to generate a midbody, and then the midbody reacts with quinoline to generate the cationic type degreaser. The molar ratio of the n-capric aldehyde to the epoxy bromobutane to the quinoline is 1:(0.75-1.5):(0.6-1.2), the preferential molar ratio is 1:1.25:0.80. The degreaser has the beneficial effects of being simple in preparing process, low in cost, high in adaptability and good in degreasing effect, and the degreasing rate is higher than 97%. The cationic type degreaser can be widely applied to an oil field polymer flooding produced water degreasing process.

Description

technical field [0001] The invention relates to a degreasing agent for oil field sewage treatment, in particular to a cationic degreasing agent for polymer flooding produced water treatment. 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): C02F1/68C07D405/06B01F17/32B01F17/18C02F103/10C09K23/18C09K23/32
CPCC02F1/682C07D405/06C02F2103/10C09K23/00
Inventor 吕小芳
Owner 山东上禾中创科技成果转化有限公司
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