Preparation method of peanut-shell degradable nano dust suppressant

A technology for peanut shells and dust suppressants, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of single effect, high dust suppression efficiency, unsatisfactory dust suppression effect, etc., and achieve the effect of saving resources

Inactive Publication Date: 2016-06-08
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention: Aiming at the problem that the currently produced dust suppressant has a single effect, the dust suppression effect is not ideal, and the tiny dust cannot be adsorbed and agglomerated, a cellulose prepared by alkaline hydrolysis of peanut shells is provided, and then By activating and centrifuging the cellulose, dialyzing it and collecting the nanocellulose, the glycosidic bond

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0019] Firstly, wash the peanut shells with clean water, grind and sieve after they are naturally dried, and prepare 55-mesh peanut shell powder, which is placed in 5% sodium hydroxide solution according to the solid-to-liquid mass ratio of 1:20 Soak for 1 hour, then heat and stir in a constant temperature water bath at 100°C for 2 hours. After the reaction is complete, filter and collect the filter residue, wash with distilled water until the pH of the filter residue reaches 7.0, and let it dry naturally; Liquid ratio 1:15, put it in a sodium hypochlorite solution with a mass concentration of 1.7%, adjust the pH to 4.5 with glacial acetic acid, then place it in a constant temperature water bath to stir and mix for 3 hours and filter it, collect the filter residue and wash it with distilled water To pH 7.0, dry it naturally to prepare peanut shell cellulose; select 10g of the above-prepared peanut shell cellulose and add 100mL of sulfuric acid with a mass concentration of 30% t...

example 2

[0022]Firstly, wash the peanut shells with clean water, grind and sieve after they are naturally dried, and prepare 58-mesh peanut shell powder, which is placed in 5% sodium hydroxide solution according to the solid-to-liquid mass ratio of 1:20 Soak for 1.5h, then heat and stir in a constant temperature water bath at 100°C for 2.5h, after the reaction is complete, filter and collect the filter residue, wash with distilled water until the pH of the filter residue reaches 7.0 and let it dry naturally; after it dries naturally, According to the solid-to-liquid ratio of 1:15, place it in a sodium hypochlorite solution with a mass concentration of 1.7%, adjust the pH to 4.7 with glacial acetic acid, then place it in a constant temperature water bath to stir and mix for 3.5 hours and filter it to collect the filter residue And wash with distilled water until the pH reaches 7.0, and dry it naturally to prepare peanut shell cellulose; select 11g of the above-prepared peanut shell cellu...

example 3

[0025] Firstly, wash the peanut shells with clean water, and after they are naturally dried, grind and sieve to prepare 60-mesh peanut shell powder, which is placed in 5% sodium hydroxide solution according to the solid-to-liquid mass ratio of 1:20 Soak for 2 hours, then heat and stir in a constant temperature water bath at 100°C for 3 hours. After the reaction is completed, filter and collect the filter residue, wash with distilled water until the pH of the filter residue reaches 7.0 and let it dry naturally; Liquid ratio 1:15, put it in a sodium hypochlorite solution with a mass concentration of 1.7%, adjust the pH to 5.0 with glacial acetic acid, then place it in a constant temperature water bath to stir and mix for 4 hours and filter it, collect the filter residue and wash it with distilled water To pH 7.0, dry it naturally to prepare peanut shell cellulose; select 12g of peanut shell cellulose prepared above and add 110mL of sulfuric acid with a mass concentration of 30% t...

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PUM

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Abstract

The invention relates to a preparation method of a peanut-shell degradable nano dust suppressant, belonging to the field of suppressant preparation. The method aims to solve the problem that the dust suppressant produced at present has the defects of single effect and unideal dust suppression effect and can not adsorb and aggregate fine dust. The method comprises the following steps: carrying out alkaline hydrolysis on peanut shells to prepare cellulose, carrying out activation and centrifugal separation on the cellulose, dialyzing, collecting the nano cellulose, and carrying out fine dust adsorption by utilizing glycosidic bonds in the nano cellulose. The hydroxy groups in the nano cellulose molecules can easily form hydrogen bonds with intramolecular or intermolecular oxygen-containing groups, so that multiple cellulose molecules form a crystal structure to adsorb the nano fine dust. When the nano cellulose is used for preparing the dust suppressant, the surface layer coal particles can resist the wind at the speed of 20 m/s, so the dust suppression efficiency is up to 98% or above. The waste peanut shells are fully utilized to prepare the dust suppressant, thereby saving the resources and being green and environment-friendly.

Description

technical field [0001] The invention relates to a preparation method of a peanut shell degradable nanometer dust suppressant, which belongs to the field of dust suppressant preparation. Background technique [0002] For a long time, coal, as a basic energy source, has always occupied a dominant position in my country's energy production and consumption structure. According to the prediction of relevant experts, by 2050, the proportion of coal in my country's primary energy will still account for more than 50%. During the storage and transportation of coal, a large amount of coal dust will be generated, which will not only cause coal loss and waste of natural resources, but also cause serious pollution to the environment. In addition, for coal piles, dust may also cause safety accidents. In the open-air coal storage plants of some thermal power plants, due to the flying of coal dust, heating pipes, cables, etc. can spontaneously ignite due to dust deposition and cause fires...

Claims

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Application Information

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IPC IPC(8): C08F251/02C08F220/06C08F226/02C08K5/053C09K3/22
CPCC08F251/02C08K5/053C09K3/22C08F226/02
Inventor 郭迎庆高力群
Owner TAIYUAN UNIV OF TECH
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