Preparation method of peanut-shell degradable nano dust suppressant

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...

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 in the nanocellulose is used to adsorb tiny dust, the hydroxyl group in the nanocellulose molecule is easy to bond with the oxygen-containing intramolecular or intermolecular Agglomerates form hydrogen bonds, so that multiple cellulose molecules form a crystal structure together to absorb nano-dust. After spraying the dust suppressant, the surface coal particles can resist the wind blowing of 20m / s, and the dust suppression efficiency is high.