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Process for preparing hot melt oil and mesoporous activated carbon simultaneously from low-rank coal

A low-rank coal and activated carbon technology, which is applied in the petroleum industry, the preparation of liquid hydrocarbon mixtures, chemical instruments and methods, etc., can solve the problems such as the influence of coal-based activated carbon on the pore-forming performance, and achieve national security issues and cheap and easy-to-obtain raw materials , the effect of reducing production costs

Inactive Publication Date: 2017-02-22
SHANXI DATONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] As far as the currently known prior art is concerned, only the effects of temperature and activation time on the pore-forming properties of activated carbon during the preparation process are considered, and no research has disclosed that small molecules present in coal will affect the pore-forming properties of coal-based activated carbon.

Method used

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  • Process for preparing hot melt oil and mesoporous activated carbon simultaneously from low-rank coal
  • Process for preparing hot melt oil and mesoporous activated carbon simultaneously from low-rank coal
  • Process for preparing hot melt oil and mesoporous activated carbon simultaneously from low-rank coal

Examples

Experimental program
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Effect test

Embodiment 1

[0058] Weigh about 10g of Datong low-rank raw coal with a particle size of less than 0.018mm and place it in a 300ml high-pressure reactor, add benzene solvent along the wall of the reactor, the amount of solvent added is 50ml, the protective gas used is high-purity nitrogen, and the air is replaced three times. And adjust the pressure to 3MPa. Set the temperature program, then heat at a heating rate of 3°C / min, stir at 300r / min while heating, when the temperature rises to the set temperature of 320°C, the pressure becomes 9MPa, start timing, after 3 hours of reaction, the program automatically stops Heating and starting to cool down. At this time, immediately open the drain valve at the bottom of the autoclave, and use the pressure in the autoclave to press out the solvent and hot solution products, and press them into the storage tank through a 0.45um filter plate, and the reaction device is naturally cooled. to room temperature. After cooling to room temperature, add 100ml...

Embodiment 2

[0061] Weigh about 10g of Datong low-rank clean coal with a particle size less than 0.018mm and place it in a 300ml high-pressure reactor, add 100ml of benzene solvent along the wall of the reactor, use high-purity nitrogen as the protective gas, and replace the air three times. And adjust the pressure to 2MPa. Set the temperature program, then heat at a heating rate of 5°C / min, and stir at 300r / min while heating, when the temperature rises to the set temperature of 320°C, the pressure becomes 7MPa, start timing, after 2 hours of reaction, the program automatically stops Heated, and began to cool down to room temperature with cooling water, opened the autoclave and transferred the residual coal to a vacuum filter, washed it with ethanol for 5 times, dried it in a vacuum oven at 80°C, weighed until constant weight, and calculated The thermal melting rate is 35.2%. Use a double-necked distillation flask to transfer all the solvents in the receiver, and use a vacuum distillation...

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Abstract

The invention relates to the field of coal-based oil preparation and coal-based activated carbon preparation, in particular to a process for preparing hot melt oil and mesoporous activated carbon simultaneously from low-rank coal and aims to provide the process for preparing the hot melt oil and the mesoporous activated carbon simultaneously from the low-rank coal. The process comprises steps as follows: S1, low-rank coal is crushed, dried and subjected to organic solvent supercritical hot melting, and a hot melt product and residual coal are obtained; S2, the obtained hot melt product and residual coal are filtered and separated; S3, the hot melt product is separated with a reduced pressure distillation method, and hot melt oil and an organic solvent are obtained; S4, activated carbon is prepared from the residual coal with a chemical activation method. The process is simple, raw materials are easy to obtain, the production cost is reduced, clean and high-added-value utilization of the coal is realized, the supercritical hot melting process of coal under the solvent action and the significance of loss of residual coal micromolecules for preparation of activated carbon with the activation method after supercritical hot melting is finished are introduced for the first time.

Description

technical field [0001] The invention relates to the fields of coal-based oil production and coal-based activated carbon production, in particular to a process for simultaneously preparing heat-soluble oil and mesoporous activated carbon using low-rank coal. Background technique [0002] my country is a country rich in coal and poor in oil. With the rapid development of economy, the shortage of liquid fuel has become an important factor restricting my country's economic development. The efficient utilization of coal has been more and more valued and favored by people. Making full use of coal resources and converting coal into clean and efficient fuels and other carbon-based functional materials is an effective way to achieve efficient utilization of coal. [0003] For now, there are three main types of coal-to-oil methods: the first type, which makes coal dry distillation at different temperatures to obtain oily substances; the second type, directly liquefies coal to obtain o...

Claims

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Application Information

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IPC IPC(8): B01J20/20C01B32/342C10G1/00B01J20/30C02F1/28
CPCB01J20/20C01P2006/12C01P2006/16C02F1/283C02F2101/308C10G1/00Y02P20/54
Inventor 罗化峰乔元栋梁帅郭雄宇宁掌玄杨东辉
Owner SHANXI DATONG UNIV
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