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Method for preparing coal flotation agent by using animal and plant grease and waste oil

A technology for animal and vegetable oils and flotation agents, which is applied in the refining of metal oxides, petroleum industry, cracking, etc., can solve the problems of inability to solve the problem of waste oil utilization, high purity and high cost, and difficulty in product marketing. It has the advantages of recyclability, simple and easy preparation method, and low cost of raw materials.

Active Publication Date: 2014-12-10
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The technical scheme of comprehensive utilization of waste oil regeneration reported above shows the following deficiencies: First, the amount of waste oil used in the production of soap living biological demulsifiers is small, which cannot solve the problem of utilizing a large amount of waste oil produced; The production methods and process principles of diesel, gasoline and aviation oil are feasible, but as fuel, the content of fatty acid methyl ester must be greater than 96.5%, resulting in high purity, high cost, high energy consumption, complex process, etc., and the use of low purity is limited, resulting in product Difficulties in marketing, etc.

Method used

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  • Method for preparing coal flotation agent by using animal and plant grease and waste oil
  • Method for preparing coal flotation agent by using animal and plant grease and waste oil
  • Method for preparing coal flotation agent by using animal and plant grease and waste oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0027] The filtered weight is 100g of waste oil. After analysis, the contents of free fatty acid and triglyceride fatty acid are 10.5% and 89.5%, respectively. , turn on the ultraviolet light for 4 hours, turn off the ultraviolet light and let the product stand for 1 hour, then take the upper layer and wash it with distilled water, then separate the water and the product with the help of a centrifuge, repeat 3 times, and get an oily liquid, that is, a coal float Choose agent. After analysis, it can be seen that in the coal flotation agent, there are 36.2% alkanes, 8.8% olefins, 13.3% diglyceride fatty acid content, 13.4% fat methyl ester content, 5.2% glycerol monofatty acid ester, 15.5% triglyceride fatty acid ester, and the rest for water.

[0028] Take 151g of coal samples from Yima Mine in Henan Province (moisture content 0.73%, ash content 22.82%), use XFD-1.5 flotation machine for flotation, the concentration of coal slurry is 100g / L, add 1g of coal flotation agent to t...

Embodiment approach 2

[0030] The filtered weight is 100g of waste oil. After analysis, the contents of free fatty acid and triglyceride fatty acid are 10.5% and 89.5%, respectively. Stir for 1 hour, turn on the UV light for 3 hours, turn off the UV light and let the product stand for 1.5 hours, then take the supernatant and wash it with distilled water, then separate the water and the product with the help of a centrifuge, and repeat 3 times to obtain an oily liquid, namely To obtain coal flotation agent. The analysis shows that in the coal flotation agent, there are 38.2% alkanes, 9.2% olefins, 13.7% diglyceride fatty acid content, 16.4% fat methyl ester content, 3.5% glycerol monofatty acid ester, 14.9% triglyceride fatty acid ester, and the rest for water.

[0031] Take 151g of coal samples from Lu'an Mine in Shanxi (0.46% moisture, 30.36% ash), and use XFD-1.5 flotation machine for flotation, the concentration of coal slurry is 100g / L, and add 1g of coal flotation agent to the coal slurry In ...

Embodiment approach 3

[0033] Filtration weight is 100g waste oil, and the content of free fatty acid and triglyceride fatty acid is respectively 10.5% and 89.5% through analysis, and above-mentioned oil is poured in the beaker that fills 50g water, and getting photocatalyst titanium dioxide and silicon dioxide ratio is 1: 1 The weight is 1g, and it is stirred indoors in the dark for 1 hour. Turn on the simulated solar lamp for 4 hours, turn off the simulated solar lamp and let the product stand for 2 hours. Then, take the upper layer and wash it with distilled water, and then separate the water and the product with the help of a centrifuge , repeated 3 times to obtain an oily liquid, that is, a coal flotation agent. The analysis shows that the coal flotation agent contains 40.7% alkanes, 10.4% olefins, 11.3% diglyceride fatty acid content, 8.4% fat methyl ester content, 4.4% glycerol monofatty acid ester, 16.5% triglyceride fatty acid ester, and the rest for water.

[0034] Take 156g of coal sampl...

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Abstract

The invention discloses a method for preparing a coal flotation agent by using animal and plant grease and waste oil, and belongs to the field of the utilization of renewable energy sources-solar energy and waste grease, the preparation of the coal flotation agent and the application thereof. The method is characterized by using the environment-friendly solar energy to realize the decarboxylation or cracking reaction of the animal and plant grease or the waste oil as the raw material under the photocatalysis action of the sunlight, UV-light or visible light through controlling the types of photocatalytic materials, so as to achieve the purpose of preparing the coal flotation agent with different ratios among hydrocarbon, fatty acid and ester materials. The method uses the clean renewable energy sources-solar energy, and recovers the waste oil, so that the high cost problem caused by using petroleum base diesel or kerosene as the flotation agent is solved under the condition of petroleum energy-lacked, energy-saved and consumption-reduced economic strategy development; the method has the advantages of no poison, no harm, low cost, economy, environmental friendliness and feasibility, reduces the coal flotation cost, overcomes the defects in the prior art, and can be widely applied to the field of the energy sustainable development.

Description

technical field [0001] The invention discloses a method for preparing a coal flotation agent by using animal and vegetable fats and oils and waste oils, and belongs to the fields of renewable energy solar energy and utilization of waste oils, preparation of coal flotation agents and their applications. It specifically relates to a method of using green and environmentally friendly renewable solar energy, using animal and vegetable oils or waste oils as raw materials, and controlling the type of photocatalytic material to prepare hydrocarbons, fatty acids, and esters under the photocatalysis of sunlight, ultraviolet light, or visible light. Coal flotation agents with different proportions of similar substances. Background technique [0002] The main components of animal and vegetable oils are fatty acid triglycerides, represented by C 12 ~C 22 It is mainly composed of alkyl chains and ester groups, and the content of sulfur and nitrogen elements is very small. With the imp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G11/04C10G29/16
Inventor 张小超易群张继龙郭天玉李国旗
Owner TAIYUAN UNIV OF TECH
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