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Micro-emulsion extraction agent applied to separation of heavy oil field and using method thereof

A heavy oil ore and microemulsion technology, which is applied in the petroleum industry and the preparation of liquid hydrocarbon mixtures, etc., can solve the problems of consumption, large amount of solvent, high energy, etc., and achieve high extraction efficiency, good quality of asphalt products, and less solid entrainment Effect

Active Publication Date: 2018-05-04
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current solvent extraction method has some problems, such as high content of mineral entrainment, large amount of solvent used, multi-stage solvent extraction usually results in high energy consumption in solvent distillation recovery

Method used

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  • Micro-emulsion extraction agent applied to separation of heavy oil field and using method thereof
  • Micro-emulsion extraction agent applied to separation of heavy oil field and using method thereof

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Embodiment approach

[0042] As a preferred embodiment of the present invention, the amino acid ionic liquid is mainly prepared from amino acid and tetrafluoroboric acid. The amino acid example liquid prepared from amino acid and tetrafluoroboric acid can not only provide hydrogen bond acceptors, but also has a low melting point.

[0043] As an optional embodiment of the present invention, the molar ratio of amino acid to tetrafluoroboric acid is 1: (0.7-1.5), and the molar ratio of amino acid to tetrafluoroboric acid aqueous solution is typical but non-limiting: 1:0.7, 1: 0.8, 1:0.9, 1:1.0, 1:1.1, 1:1.2, 1:1.3, 1:1.4, or 1:1.5. As a preferred embodiment of the present invention, the molar ratio of amino acid to tetrafluoroboric acid is 1:1, so that the conversion rate of the reaction is high, and the yield of the obtained amino acid ionic liquid is high.

[0044] The preparation method of described deep eutectic solvent comprises the following steps:

[0045] (1) Disperse the amino acid in water...

Embodiment 1

[0055] Disperse 5 mol of tryptophan in water at a ratio of 1:2 (V:V), add 5 mol of tetrafluoroboric acid aqueous solution and mix, stir and react at 25°C for 18 hours, then rotary evaporate at 80°C for 10 hours to obtain wine red liquid ion Liquid; then mix 1 mol of ionic liquid with 3 mol of urea, stir and react at 80°C for 4 hours to obtain a yellow-brown liquid, which is the tryptophan tetrafluoroborate / urea eutectic reagent. The 1H-NMR figure of the deep eutectic reagent prepared in embodiment 1 is shown in figure 1 , figure 1 (a) is the 1H-NMR diagram of tryptophan, (b) is the 1H-NMR diagram of tryptophan tetrafluoroborate, (c) is the 1H-NMR diagram of tryptophan tetrafluoroborate / urea Figure, (d) is the 1H-NMR figure of urea. pass figure 1 The comparison of (a) and (b) can confirm the generation of ionic liquid, by figure 1 The comparison of (c) and (d) can confirm the generation of hydrogen bond, and the deep eutectic reagent was successfully synthesized.

Embodiment 2

[0057] Disperse 5 mol of histidine in water at a ratio of 1:2 (V:V), add 4 mol of tetrafluoroboric acid aqueous solution and mix, stir and react at 20°C for 12 hours, and then rotary evaporate at 70°C for 8 hours to obtain wine red liquid ion Liquid; then mix 1 mol of ionic liquid with 2 mol of urea, stir and react at 70°C for 6 hours to obtain a yellow-brown liquid, which is the histidine tetrafluoroborate / urea eutectic reagent.

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Abstract

The invention relates to a micro-emulsion extraction agent applied to separation of heavy oil field and a using method thereof. The micro-emulsion extraction agent is prepared by mixing deep-eutecticsolvents, monohydric alcohols and weak-polarity solvents according to a mass ratio of (1-2) to (1-2) to (2-4); the micro-emulsion extraction agent is a water-free and surfactant-free winsor-I type micro emulsion. The micro-emulsion extraction agent has the advantages of high thermodynamic stability, low surface tension, high solubilization capability, high recyclability and reusability. The micro-emulsion extraction agent can be used for extracting asphalt in the heavy oil field, and is high in extraction efficiency, high in quality of asphalt products and low in solid entrainment; meanwhile,the extraction process is simple and is mild in conditions.

Description

technical field [0001] The invention relates to the technical field of separating heavy oil from heavy oil ore, in particular to a microemulsion extractant for separating heavy oil ore and its usage. Background technique [0002] Heavy oil deposits are a general term for a class of unconventional energy sources, including oil shale, oil sands, oil sludge, and heavy oil. [0003] Oil shale is a sedimentary rock containing solid organic matter within its inorganic mineral framework. Its organic matter is mainly kerogen, which is insoluble in petroleum solvent and contains a small amount of asphaltenes. Oil shale is isolated from air and heated to about 500°C, and its kerogen is pyrolyzed to generate shale oil, water, semi-coke and dry distillation gas. The pyrolysis product shale oil is similar to natural petroleum. After blending, it can be used as marine fuel oil. After hydrofining and other processes, light oil products such as gasoline and diesel can be obtained. [000...

Claims

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Application Information

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IPC IPC(8): C10G1/04
CPCC10G1/045
Inventor 何林康宁李鑫钢隋红张自生
Owner TIANJIN UNIV
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