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Method for preparing porous microbeads from coal gasification fine slag and prepared porous microbeads

A technology of coal gasification and fine slag, which is applied in the field of solid waste resource utilization, can solve the problems of complex process, harsh synthesis process conditions, and expensive products, and achieve the effect of good chemical activity

Active Publication Date: 2020-02-18
鄂尔多斯市慧恒科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of artificial hydrothermal synthesis technology requires special hydrothermal synthesis equipment, and the conditions of the synthesis process are harsh. For the synthesis of mesoporous materials, a large amount of template agent needs to be added, and the template agent will be removed by heat treatment in the later stage. The synthesis cost is high and the process is complicated. The product is expensive

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Weigh 100g of coal gasification fine slag, add water to dilute to a solid content of 10wt%, and use a high-speed dispersion mixer (Guangdong Foshan Yifu Machinery Co., Ltd.) to stir at room temperature, with a stirring speed of 1800r / min and a stirring time of 30min; Separation in the cyclone separator, the obtained lower slurry is the silicon-rich composite slurry, and the solid component is separated, the total amount of solid is about 60g, and the carbon content is about 6wt%;

[0030] Get 130ml of 36wt% concentrated hydrochloric acid in addition, join in the above-mentioned solid component, add water to adjust the total volume of the slurry to 360ml, the acid concentration of the slurry reaches about 15.6wt%, and the solid content is about 14.5wt%. Stir at room temperature for 6h, then solidify Liquid separation, washed with water until the pH is equal to 4; the separated mixed solution of calcium chloride, aluminum chloride and ferric chloride can be used for the de...

Embodiment 2

[0033] Weigh 100g of coal gasification fine slag, add water to dilute to a solid content of 10wt%, stir with a high-speed dispersion mixer (Guangdong Foshan Yifu Machinery Co., Ltd.) at room temperature, the stirring speed is 1600r / min, and the stirring time is 40min; Separation in the cyclone separator, the obtained lower slurry is silicon-rich composite slurry, the total amount of separated solid components is about 60g, and the carbon content is about 6wt%;

[0034] Take another 100ml of 36wt% concentrated hydrochloric acid, add water to dilute to 130ml, and then add it to the above solid component, add water to adjust the total volume of the slurry to 360ml, the acid concentration of the slurry is about 12.2wt%, and the solid content is about 14.7wt%. Stir at room temperature for 4 hours , followed by solid-liquid separation, washed with water until the pH is equal to 4, the separated mixed solution of calcium chloride, aluminum chloride and ferric chloride can be used for ...

Embodiment 3

[0037] Weigh 100g of coal gasification fine slag, add water to dilute to a solid content of 10wt%, and use a high-speed dispersion mixer (Guangdong Foshan Yifu Machinery Co., Ltd.) to stir at room temperature, with a stirring speed of 1700r / min and a stirring time of 30min; Separation in the cyclone separator, the obtained lower slurry is silicon-rich composite slurry, the total amount of separated solid components is about 62g, and the carbon content is about 6.5wt%;

[0038] Take another 75ml of 36wt% concentrated hydrochloric acid, add water to dilute to 130ml, and then add it to the above-mentioned solid component. Add water to adjust the total volume of the slurry to 360ml. At this time, the acid concentration of the slurry is about 9.3wt%, and the solid content is about 15.3wt%. Stir at room temperature After 4 hours, solid-liquid separation, washing with water until the pH is equal to 4, the separated mixed solution of calcium chloride, aluminum chloride and ferric chlor...

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Abstract

The invention discloses a method for synthesizing porous micro-beads through acid dissolution of fine coal gasification slag. The method comprises the following steps: 1, taking a proper amount of thefine coal gasification slag, and adding water to prepare a fine coal gasification slag slurry with the solid content being 10-30 wt%; 2, fully stirring the slurry prepared in step 1, performing gravity cyclone separation, and collecting the obtained heavy separation product to obtain a silicon-rich composite slurry; 3, mixing a proper amount of an acid solution with the silicon-rich composite slurry to obtain a mixed slurry, and performing an acid dissolution reaction; and 4, carrying out solid-liquid separation, washing and drying on a material obtained after the acid dissolution reaction toobtain the synthesis product. The invention also discloses a composite porous material prepared through the method. The porous material is obtained through controlled dissolution under mild conditions by using the high activity of silicon aluminum calcium iron in the fine coal gasification slag. The material has the advantages of good physical and chemical adsorption performances, simple preparation process, low cost, realization of further preparation of a water purifier from dissolved metal ions, realization of the comprehensive utilization of all components in the fine coal gasification slag, and realization of changing wastes into valuables.

Description

technical field [0001] The invention belongs to the technical field of resource utilization of solid waste, in particular to a method for preparing porous microbeads by acid-dissolving coal gasification fine slag, and the prepared porous material. Background technique [0002] Coal gasification technology is one of the core contents of clean coal technology. Incomplete oxidation of coal to obtain combustible coal gasification gas (such as crude gas) for downstream use has rapidly become an important direction of coal resources and energy utilization in recent years. In the past 20 years, my country has built a number of coal chemical enterprises in Yulin, Shaanxi, Ordos, Inner Mongolia, Changzhi, Shanxi, Zhundong, Xinjiang, Yili and other places, which have been put into operation one after another, and the output has increased year by year. scale. [0003] In the coal gasification technology system, while most of the carbonaceous part of the coal is converted into gas, the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/28B01J20/30B01D24/00B01J32/00B01J21/18
CPCB01D24/001B01J20/20B01J20/28016B01J20/28061B01J20/28073B01J20/28083B01J21/18
Inventor 魏存弟朱丹丹魏际伦程姗蒋引珊杨殿范艾伟东
Owner 鄂尔多斯市慧恒科技有限责任公司
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