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Method for extracting indole in wash oil by using polyvinylpyrrolidone

A polyvinylpyrrolidone and oil washing technology, which is applied in the petroleum industry, refined hydrocarbon oil, ion exchange regeneration, etc., can solve the problems of low indole extraction efficiency and complicated extraction process, and achieves easy large-scale production, simple process, and reduced The effect of removing costs

Active Publication Date: 2019-05-07
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of this, the present invention aims to propose a method for utilizing polyvinylpyrrolidone to extract indole in washing oil, so as to solve the problems of low extraction efficiency and complex extraction process of indole in existing washing oil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A method utilizing polyvinylpyrrolidone to extract indole in washing oil, it may further comprise the steps:

[0027] According to the mass ratio of 0.03, polyvinylpyrrolidone with a molecular weight of 1,300,000 is mixed with washing oil, stirred, and the polyvinylpyrrolidone and washing oil are subjected to solid-liquid adsorption. After the solid-liquid adsorption is completed, solid-liquid separation is carried out to obtain deindole washing Oil phase and polyvinylpyrrolidone phase, wherein the washing oil is a simulated oil prepared by indole and toluene, the content of indole in the simulated oil is 5wt%, the adsorption temperature of solid-liquid adsorption is 30°C, and the adsorption time is 5h. In this example, during the solid-liquid adsorption process between polyvinylpyrrolidone and washing oil, the polyvinylpyrrolidone and washing oil are in full contact, and the indole in the washing oil enters the polyvinylpyrrolidone to complete the reaction of polyvinylp...

Embodiment 2

[0030] The difference between this embodiment and embodiment 1 is that the adsorption temperature of solid-liquid adsorption is 30° C., and the adsorption time is 1 h.

[0031] After testing, the removal rate of indole in this embodiment is 24.48%, and the adsorption capacity is 408.06mg / g.

Embodiment 3

[0033] The difference between this embodiment and embodiment 1 is that the mass ratio of polyvinylpyrrolidone to washing oil is 0.4.

[0034] After testing, the removal rate of indole in this embodiment is 93.13%, and the adsorption capacity is 116.42mg / g.

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Abstract

The invention provides a method for extracting indole in washing oil by using polyvinylpyrrolidone, the method comprises the following steps: mixing the polyvinylpyrrolidone with the washing oil, stirring to perform solid-liquid adsorption of the polyvinylpyrrolidone and the washing oil, and after the solid-liquid adsorption is ended, carrying out solid-liquid adsorption to obtain an indole-removal oil washing phase and a polyvinylpyrrolidone phase. According to the method for extracting the indole in the washing oil by using the polyvinylpyrrolidone, the polyvinylpyrrolidone is used as an adsorbent, the polyvinylpyrrolidone has the characteristics of no corrosion and stable physical property, the polyvinylpyrrolidone is mixed with the washing oil, and the indole in the washing oil can bewell extracted through solid-liquid adsorption and solid-liquid separation operation, and the removal rate of the indole can reach more than 93%, and the method is mild in indole removal condition, simple in process and easy for large-scale production.

Description

technical field [0001] The invention belongs to the field of washing oil processing, and in particular relates to a method for extracting indole in washing oil by using polyvinylpyrrolidone. Background technique [0002] Wash oil is one of the vacuum fractionation products of wash oil, which is in the form of yellowish-brown or brown liquid. The annual output in my country is nearly 1 million tons. The washing oil is mainly composed of acenaphthene, fluorene, oxyfluorene, indole, nitrogen heteroaryl ring compound, nitrogen heteroaryl ring compound, etc., wherein indole in the nitrogen heteroaromatic ring compound accounts for 1% (weight content) of the washing oil , medicine and exogenous plant growth hormones have high practical value. At present, indole is mostly obtained through chemical synthesis, and the cost of raw materials is relatively high. In addition, indole can also be isolated from washing oil fractions of low-cost washing oils, which is more economical. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D15/08C10G25/00
Inventor 高家俊朱海艳王倩朱爽姜兴茂
Owner WUHAN INSTITUTE OF TECHNOLOGY
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