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Sulfonate type biomass surfactant and synthesis method thereof

A technology of surfactant and sulfonate type, which is applied in the direction of sulfonate preparation, chemical instruments and methods, and drilling compositions, etc. It can solve the difficulties in purification of reaction products, limited use range, general temperature resistance, etc. problems, to achieve good application prospects, low cost, and mild reaction conditions

Active Publication Date: 2016-05-25
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Fatty acid methyl ester sulfonate belongs to the sulfonate anionic surfactant, and its temperature and salt resistance effects are good, and the sulfonate type surfactant is widely used in the process of tertiary oil recovery. CN101759612A discloses a hard Fatty acid methyl ester as raw material, in the multi-tube membrane reaction vessel with SO 3 The preparation process of fatty acid methyl ester sulfonate surfactant by sulfonation of gas, but the reactor requirements are relatively high and SO 3 Sulfonating agent has certain toxicity
CN101774936A discloses a process for preparing alkanolamides based on fatty acid esters. Although the preparation process is simple, the energy consumption is low, and the alkanolamides have good foam stability and functions such as emulsification and wetting, but because they belong to Non-ionic surfactants have general temperature resistance, which limits their scope of use. In addition, there are many side reactions in the synthesis process, the yield is low, and the purification of reaction products is difficult.

Method used

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  • Sulfonate type biomass surfactant and synthesis method thereof
  • Sulfonate type biomass surfactant and synthesis method thereof
  • Sulfonate type biomass surfactant and synthesis method thereof

Examples

Experimental program
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preparation example Construction

[0032] The synthetic method specifically comprises the following steps:

[0033] 1) Preparation of fatty acid alkanolamides

[0034] Mix fatty acid methyl ester and diethanolamine in a molar ratio of 1:1.05 to 1:1.15 in a three-necked flask 2 equipped with a magnetic rotor 6, a condenser tube 4, and a thermometer 5, and add the total reactant (fatty acid methyl ester) into the three-necked flask. The sum of the mass of ester and diethanolamine) catalyst sodium hydroxide with a mass of 0.6% to 0.8%, then put the flask in an oil bath and heat it to 110°C to 130°C to stir and react for 4h to 6h, and finally spin evaporate, dry and cool to obtain fatty acid Alkanolamides.

[0035] The three-neck flask 2 is a glass container commonly used in the synthesis reaction of organic substances. It usually has the appearance of a round belly and a thin neck. It has three mouths, and a water separator 3 and a condenser pipe 4 are installed on one side mouth to condense the evaporated steam ...

Embodiment 1

[0041] 21.43g methyl laurate (C 11 h 23 COOCH 3 , 0.1 mole) and 11.04g diethanolamine (0.105 mole) are mixed in the three-necked flask that magnetic rotor, condenser, thermometer are housed, and in the three-necked flask, add 0.20g sodium hydroxide (accounting for the mass percentage of total reactant is 0.62% ), the flask was placed in an oil bath and heated to 110°C, stirred and reacted for 5 hours, and then dried and cooled by rotary evaporation to obtain 24.21g of lauric acid alkanolamide with a yield of 84.24%.

[0042] Dissolve 12.20g of propane sultone (0.1 mol) in a certain volume of tetrahydrofuran, then add 14.66g (0.051 mol) of lauric acid alkanolamide to it, fully dissolve it and put it into a In a three-necked flask, add 0.27g sodium hydroxide (accounting for 1.00% by mass of the total reactant) into the three-necked flask, heat to reflux temperature, stir and react for 16h, and obtain 14.42g N,N-di (1-ethoxy-)3-sulfopropyl lauramide sulfonate surfactant, the y...

Embodiment 2

[0047] 21.43g methyl laurate (C 11 h 23 COOCH 3 , 0.1 mole) and 11.56g diethanolamine (0.11 mole) are mixed in the three-necked flask that magnetic rotor, condenser, thermometer are housed, and in the three-necked flask, add 0.231g sodium hydroxide (accounting for the mass percentage of total reactant is 0.70% ), the flask was placed in an oil bath and heated to 120°C, stirred and reacted for 5 hours, and then dried and cooled by rotary evaporation to obtain 24.55g of lauric acid alkanolamide with a yield of 85.41%.

[0048] Dissolve 12.20g propane sultone (0.1 mole) in a certain volume of tetrahydrofuran, then add 15.09g (0.0525 mole) of lauric acid alkanolamide to it, fully dissolve and put it into the In a three-necked flask, add 0.33g sodium hydroxide (accounting for 1.21% by mass of the total reactant) into the three-necked flask, heat to reflux temperature, stir and react for 12h, and obtain 13.45g N,N-di (1-ethoxy-)3-sulfopropyl lauramide sulfonate surfactant, the yi...

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Abstract

The present invention relates to the field of organic compound synthesis, and specifically, relates to a sulfonate-type biomass surfactant based on a fatty acid methyl ester and a synthesis method thereof. A main component of city restaurant and kitchen swill waste oil is the fatty acid methyl ester. The sulfonate-type biomass surfactant based on the fatty acid methyl ester is prepared from the following steps: preparing fatty acid alkanolamide, and carrying out a sulfopropyl reaction. The sulfonate-type biomass surfactant based on the fatty acid methyl ester is applied in the field of oil production. The sulfonate-type biomass surfactant synthesized in the present invention has better surface activity and interfacial activity, is non-toxic, non-hazardous and degradable, does less harm to an environment and a stratum layer, can replace a conventional petroleum diesel-based surfactant, achieves purposes of resourceful comprehensive utilization of city restaurant and kitchen swill and added value improvement, and has a good application prospect; in addition, a synthesis reaction condition is mild, a preparation process is simple, and the process is reasonable, applying to scale production; the surfactant is used as an oil washing agent of a chemical flooding system in oil drilling, improves an oil washing effect, and thus improves a crude oil recovery rate.

Description

technical field [0001] The invention belongs to the field of organic compound synthesis, and in particular relates to a sulfonate-type biomass surfactant based on fatty acid methyl ester as the main component in waste oil from kitchen waste and a synthesis method thereof, which is applied to oil exploitation. Background technique [0002] About 4 to 6 million tons of waste oil are produced in urban kitchen waste in my country every year, and some of the waste oil flows into rivers, wasting in vain and polluting water bodies; another considerable part is processed into "refined oil" and returns to the dining table, posing a serious threat to my country's food safety . Fatty acid methyl esters prepared from kitchen waste oils are widely used as diesel fuel because of their good storage stability, low boiling point, easy fractionation, and low corrosion. In addition, with people's in-depth research on fatty acid methyl esters, its use is also expanding. The main use is as an in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C309/15C09K8/584C07C303/32
CPCC07C309/10C09K8/584
Inventor 戴彩丽付阳由庆赵明伟赵光赵健慧
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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