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Device and method for refining crude lignite wax

A technology of montan wax and coal wax, applied in the recovery/refining of mineral wax, petroleum industry, etc., can solve the problems of incomplete reaction between wax and oxidant, limited reaction of oxidant, oxidant oxidation ability needs to be improved, etc., to achieve non-toxic, The effect of reducing the amount of waste water discharge and increasing the contact area

Active Publication Date: 2020-10-02
CHNA ENERGY INVESTMENT CORP LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The refined wax produced by the existing refining method is slightly yellow in color. There are two main reasons. One is that the contact between the wax and the oxidizing agent is limited and the reaction is not complete, and the other is that the oxidizing ability of the oxidizing agent needs to be improved.

Method used

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  • Device and method for refining crude lignite wax

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Take 2g of degreasing wax and put it in such as figure 1 In the refining reaction kettle shown, there are 10 layers of sand core plates, the distance between two adjacent layers of sand core plates is 5cm, and the material of the sand core plates is quartz; the aperture is 2μm; the thickness is 3mm. Add 6 mg of butanol as an auxiliary agent, and react with ozone for 60 minutes at 90°C, and the amount of ozone generated is 80 mg / h. As the reaction progresses, the degreasing wax gradually decolorizes, and passes through the sand core plate and gathers to the top of the kettle; the pooled and reacted refined wax overflows into the cooling tank, and the refined wax gradually solidifies into a solid; the flow in the cooling tank enters the filter The solid refined wax enters the drier after being washed with water for further drying; the liquid mother liquor returns to the refining reaction kettle and continues to be recycled as the reaction mother liquor; the dried solid wa...

Embodiment 2

[0063] Using the same reaction device and method as in Example 1, the only difference is that ozone was passed through at 100° C. for 60 minutes for reaction. The yield of the obtained refined wax is 75.3%, and the whiteness is 74.4%.

Embodiment 3

[0065] Using the same reaction device and method as in Example 1, the only difference is that ozone was passed through for 60 minutes at 80° C. for reaction. The resulting refined wax has a yield of 80.3% and a whiteness of 71.8%.

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Abstract

The invention provides a device and a method for refining crude lignite wax. The device for refining the crude lignite wax comprises a refining reaction kettle, wherein one or more layers of sand coreplates are arranged in the refining reaction kettle, and a feeding port of the refining reaction kettle is formed in the bottom. The method for refining the crude lignite wax comprises the step of contacting a crude lignite wax raw material with ozone to obtain the refined lignite wax. According to the method, the production process is non-toxic, the wastewater discharge amount is greatly reduced, and the product refined wax whiteness is high.

Description

technical field [0001] The invention relates to a device and method for refining crude montan wax. Background technique [0002] Montan wax is a mineral wax extracted from wax-rich lignite by using organic solvents. It has many excellent characteristics and is widely used. At present, there is no synthetic wax to replace it. However, the crude wax directly extracted from lignite has a darker color, which limits its application in more fields. Therefore, decolorization of montan wax can greatly broaden its application range and further enhance its value. In general, the lighter the refined wax, the wider the range of applications and the higher the price. [0003] CN102465037A discloses a refining method for oxidative decolorization of montan wax, in which the oxidizing agent used is hydrogen peroxide and refined in two stages. Since the oxidizing agent is hydrogen peroxide at a concentration of 30%, this method produces a large amount of waste water. [0004] CN103525462...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G73/00
CPCC10G73/00
Inventor 张中华张翠清芦海云李晓峰崔鑫郭屹
Owner CHNA ENERGY INVESTMENT CORP LTD
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