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Process for extracting acenaphthene from coking rectification waste residues by using counter-current chromatography

A technology of countercurrent chromatography and acenaphthylene is applied in the field of extraction and preparation technology of acenaphthylene, and can solve problems such as environmental pollution

Pending Publication Date: 2022-06-07
ANSHAN XIAOJUREN BIOTECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to utilize coking and rectifying waste residues to solve the problem of environmental pollution, and at the same time provide a method for extracting and refining acenaphthylene with simple process, low cost and environmental friendliness

Method used

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  • Process for extracting acenaphthene from coking rectification waste residues by using counter-current chromatography
  • Process for extracting acenaphthene from coking rectification waste residues by using counter-current chromatography
  • Process for extracting acenaphthene from coking rectification waste residues by using counter-current chromatography

Examples

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Embodiment 1

[0039] 1) Coking rectification waste residue (100g) was mixed with petroleum ether (400ml) at 60-90°C, heated to 60°C, stirred for 1 hour, filtered, the mother liquor obtained by filtration was cooled for 2 hours, and then filtered to obtain an extract solid (30g);

[0040] 2) Mix the solid extract (30g) with 60-90°C petroleum ether (90ml), heat to 60°C, stir for 1h, cool for 2h, and filter to obtain the crude product solid (5g);

[0041] 3) dissolving the crude product solid in toluene to prepare a 5.0% sample solvent solution, toluene-ethyl acetate-methanol-a certain concentration of calcium sulfate aqueous solution (volume ratio 2: 4: 2: 3) is a two-phase solvent system, The concentration of the calcium sulfate aqueous solution is 50%, the reversal speed is 600 r / min, and the separation and purification of a high-speed countercurrent chromatography is carried out under the condition of a separation flow rate of 10 mL / min to obtain a solvent fraction of a purified crude produ...

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Abstract

The invention relates to an acenaphthene extraction and preparation process, which takes coking rectification waste residue as a raw material and a low-boiling-point solvent as a solvent for extraction, then uses the low-boiling-point solvent for recrystallization, and then applies a counter-current chromatography preparative chromatography technology for refining to obtain acenaphthene, the purity is greater than 97.0%, and the process has the advantages of short preparation period, low cost, high yield in each step, high purity and the like. And the method is suitable for preparing the high-purity acenaphthene.

Description

technical field [0001] The invention relates to a process for extracting and preparing acenaphthylene, in particular to a process for extracting and refining acenaphthylene by using coking rectification waste residue as a raw material. Background technique [0002] Acenaphthylene, English name Acenaphthylene, CAS number: 208-96-8, acenaphthylene can be used to make acenaphthylene resin, used for electrical insulating materials and ion exchange resins. Acenathene is used as a raw material for organic synthesis to produce 1,8-naphthalene dicarboxylic anhydride, nitroacenaphthene, acenaphthylene quinone, etc. for the preparation of dyes, such as Shihlin scarlet, fluorescent whitening agent. Acenathene can also be used to prepare plant growth hormones, insecticides and other pesticides. [0003] The structural formula of acenaphthene: [0004] [0005] The preparation method of acenaphthylene is as follows: [0006] One is the synthesis of acenaphthene by gas-phase oxidati...

Claims

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Application Information

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IPC IPC(8): C07C7/10C07C7/14C07C13/547
CPCC07C7/10C07C7/14C07C13/547Y02P20/582
Inventor 徐英黔胡君一胡煦格
Owner ANSHAN XIAOJUREN BIOTECHNOLOGY CO LTD