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Efficient extraction solvent composition of lignite wax and extraction method of lignite wax

A technology for extracting solvents and compositions, which is applied in the field of high-efficiency extraction solvent compositions and extractions of montan wax, can solve problems such as unsatisfactory economic benefits, low extraction efficiency, and high solvent toxicity, and achieve improved production efficiency and significant economic benefits , the effect of high market value

Inactive Publication Date: 2014-03-19
南通金庆美术图案设计有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The traditional montan wax extraction process generally uses benzene, toluene, a solvent composition made of the two or a solvent composition made of a benzene-based solvent and gasoline as an extractant, which has low extraction efficiency and poor product quality. , high energy consumption, high solvent toxicity, serious environmental pollution, and unsatisfactory economic benefits

Method used

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  • Efficient extraction solvent composition of lignite wax and extraction method of lignite wax

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Experimental program
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Embodiment approach

[0016] The mixed extractant includes one or more mixed solvents of esters and aromatic hydrocarbons, cycloalkanes, and linear hydrocarbon solvents, wherein the volume percentage of ester solvents is 10 to 50%, and the balance is aromatic hydrocarbons, cycloalkanes, One or more of straight-chain hydrocarbon solvents, the total amount is 100%.

[0017] The ester solvent is one or more of propyl formate, isopropyl formate, butyl formate, ethyl acetate, n-propyl acetate, isopropyl acetate, isobutyl acetate, and sec-butyl acetate .

[0018] Described aromatic hydrocarbon solvent is benzene and / or toluene; Described cycloalkane solvent is one or more in cyclopentane, cyclohexane, industrial cyclohexane; Described linear hydrocarbon solvent is n-hexane , heptane, octane, industrial hexane, No. 6 solvent oil, No. 120 solvent oil, and light gasoline.

[0019] The surfactant is lipophilic fluorosurfactant.

[0020] The lipophilic fluorine-containing surfactant is one or more of ethyl...

Embodiment 1

[0030] Take a mixed extractant with a volume percentage of 99.95%, and a surfactant ethyl flunonanoate of 0.05%; the volume percentage in the mixed extractant is propyl formate and 90% is benzene.

Embodiment 2

[0032] Take a mixed extractant with a volume percentage of 99.96%, and a surfactant of 0.04% propyl flunonanoate; 20% by volume in the mixed extractant is isopropyl formate and 80% is toluene.

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Abstract

The invention discloses an efficient extraction solvent composition of lignite wax and an extraction method of lignite wax. The extraction solvent composition contains a mixed extracting agent and surfactant; in the total 100vol% of extraction solvent composition, the volume percentage of the mixed extracting agent is 99.95-99.99% by volume and the balance is surfactant. The extraction method uses the extraction solvent composition as a solvent and adopts a pot-group indirect type or groove belt screen continuous type lignite wax extraction method, wherein water content of crude coal is controlled to 16-22%, coal granularity of the pot-group indirect type is 1-8mm and coal granularity of the groove belt screen continuous type is 0.2-5mm. One or more than one of ester, aromatic hydrocarbon, naphthene hydrocarbon and linear hydrocarbon solvent and the surfactant combine the extraction solvent composition; as an extraction solvent, the extraction solvent composition is capable of remarkably increasing extraction efficiency of the lignite wax, greatly improving wax yield, and simultaneously obviously improving product quality of the lignite wax and production efficiency. The extraction solvent composition is low in boiling point, easy to recover (energy-saving), low in toxicity and favorable for improvement of production environment; and product is green and environment-friendly.

Description

technical field [0001] The invention belongs to the technical field of montan wax extraction, and in particular relates to a high-efficiency extraction solvent composition and an extraction method of montan wax with high extraction efficiency, good product quality, low production energy consumption, environmental friendliness and significant economic benefits. Background technique [0002] Natural wax in lignite is an important chemical raw material, which is widely used in many fields and has good economic extraction value. The traditional montan wax extraction process generally uses benzene, toluene, a solvent composition made of the two or a solvent composition made of a benzene-based solvent and gasoline as an extractant, which has low extraction efficiency and poor product quality. , high energy consumption, high solvent toxicity, serious environmental pollution, and unsatisfactory economic benefits. Therefore, research and development a kind of extraction efficiency h...

Claims

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Application Information

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IPC IPC(8): C10G73/00
Inventor 刘长胜
Owner 南通金庆美术图案设计有限公司
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