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Structural modification type cameclia oleifera saponin and preparation method and application thereof

A technology of camellia oleifera saponin and complete reaction, which is applied in the direction of chemical instruments and methods, steroid compounds, drilling compositions, etc., and can solve the problems of temperature resistance, salt resistance, acid resistance, poor stability, high price, groundwater, geological environment, etc. Pollution and other problems, to achieve the effect of high foaming ratio, long foam stabilization time, and avoid damage

Active Publication Date: 2010-10-20
江西新中野茶业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] China has developed rapidly in the research of surface chemical properties and the expansion of application scope, but there is still a big gap with foreign countries. Although they have the advantages of high interfacial activity, they all have temperature resistance, salt resistance, acid resistance and Poor stability in the formation and other disadvantages, and the price is generally high, especially these surfactants are mainly obtained through chemical synthesis methods, long-term large-scale use has caused serious environmental pollution to groundwater, geology, etc.

Method used

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  • Structural modification type cameclia oleifera saponin and preparation method and application thereof
  • Structural modification type cameclia oleifera saponin and preparation method and application thereof
  • Structural modification type cameclia oleifera saponin and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] (a) In 1000L reaction kettle A, add substrate raw materials-200 kg of self-made camellia saponin powder, 300 kg of n-butanol, heat to 60-70°C, stir for 60 minutes under normal pressure, so that camellia oleifera saponin is fully dissolved, Cool to 50°C and filter, and pump the filtrate into another 1000L reactor B.

[0044] (b) Add 150 kilograms of N in reactor B, N '-dicyclohexylcarbodiimide (DCC), 10 kilograms of 4-dimethylaminopyridine (DMAP), stir at room temperature and carry out esterification reaction, track Monitor the reaction (trace with thin-layer chromatography, take the disappearance of camellia saponin point as the reaction end point, the same below), and react for 5 hours.

[0045] (c) Add 40 kg of cetyl alcohol to the reaction kettle, and stir at room temperature for 3 hours. Heat to 80-90°C, depressurize to 0.01MPa, stir to carry out transesterification reaction, track and monitor the reaction (trace with thin-layer chromatography, take the disappearan...

Embodiment 2

[0048] (a) In the 1000L reaction kettle A, add matrix raw materials-200 kg of self-made camellia saponin powder and 200 kg of n-butanol, heat to 50-70°C, stir for 60 minutes under normal pressure to fully dissolve camellia oleifera saponin, and cool to Filter at 20°C, and pump the filtrate into another 1000L reactor B.

[0049] (b) 100 kg of N,N'-dicyclohexylcarbodiimide (DCC) and 2 kg of 4-dimethylaminopyridine (DMAP) were added to reaction kettle B, and the reaction was stirred at room temperature for 4 hours.

[0050] (c) condition is the same as (c) in embodiment 1.

[0051] (d) The conditions are the same as (d) in Example 1, and finally 270 kg of structure-modified Camellia oleifera saponin is obtained, wherein the solid content is 58%.

Embodiment 3

[0053] (a) In the 1000L reaction kettle A, add matrix raw materials-200 kg of self-made camellia saponin powder and 400 kg of n-butanol, heat to 70-90°C, stir for 60 minutes under normal pressure to fully dissolve camellia oleifera saponin, and cool to Filter at 30°C, and pump the filtrate into another 1000L reactor B.

[0054] (b) 180 kg of N,N'-dicyclohexylcarbodiimide (DCC) and 16 kg of 4-dimethylaminopyridine (DMAP) were added to reactor B, and the reaction was stirred at room temperature for 8 hours.

[0055] (c) condition is the same as (c) in embodiment 2.

[0056] (d) The conditions are the same as (d) in Example 2, and finally 290 kg of structure-modified Camellia oleifera saponin is obtained, with a solid content of 50%.

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Abstract

The invention discloses structural modification type cameclia oleifera saponin, which is prepared by the following method: stirring cameclia oleifera saponin and normal butanol at room temperature and carrying out an esterification reaction under the action of 4-dmethylamino pyridine as a catalyst and N-dicyclohexylcarbodiimide as a dehydrating agent; tracking and detecting to complete reaction; adding fatty alcohol and stirring at room temperature and reacting for 2-5 hours; heating to 70-100DEG C; controlling the reaction pressure to be 0.005-0.015MPa; stirring and carrying out an ester exchange reaction, tracking and detecting to complete reaction; filtering reaction liquid; washing filtrate B; drying and then filtering an organic layer to obtain filtrate C; carrying out reduced pressure distillation to recover the normal butanol; and obtaining a remainder which is the structural modification type cameclia oleifera saponin. The structural modification type cameclia oleifera saponinhas the characteristics of high foaming multiplying power, long foam stabilizing time and the like and can be used as a matrix raw material of an oil filed foaming agent; and the oil filed foaming agent synthesized by matching and optimizing has the performances of resisting acid, alkali, temperature and salt and capability of meeting the oil extracting requirements under different conditions.

Description

1. Technical field [0001] The invention relates to a structure-modified camellia oleifera saponin and a preparation method thereof, belonging to the technical field of oilfield chemicals, and can be applied in oilfield drilling, well completion, oil recovery, water injection, enhanced recovery, gathering and transportation, and the like. 2. Background technology [0002] Petroleum resources are an important strategic resource. With the deepening of exploration and development, the difficulty of mining gradually increases. After primary oil recovery (depending on the original energy of the oil layer, the general recovery rate is only 5% to 10%, making 90% Around the proven oil reserves are left underground), secondary oil recovery (supplementing energy through water injection, so that the recovery rate of the oilfield can be increased to 30%-40%, but there are still 60%-70% remaining underground that cannot be recovered) Finally, physical-chemical methods are adopted to chang...

Claims

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Application Information

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IPC IPC(8): C07J63/00C09K8/584
Inventor 朱伯荣来虎钦周瑛黄重水叶勇
Owner 江西新中野茶业科技有限公司
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