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Method for preparing photocatalytic degradation-type dust suppressant

A technology of photocatalyst and dust suppressant, which is applied in the field of preparation of photocatalytic degradable dust suppressant, can solve the problems of long project implementation period, poor shelter of stockpile, imperfect management, etc., and is conducive to large-scale promotion and application , good degradability, and the effect of reducing the incidence

Inactive Publication Date: 2012-10-03
TIANJIN UNIVERSITY OF TECHNOLOGY
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  • Summary
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Problems solved by technology

[0002] At present, many cities in China are in the peak period of infrastructure construction. During the construction process, the management is not perfect, the stockpile is not strictly shielded, and the project implementation period is long. Various particles and aerosol ions settled on the ground will enter the air again, which will inevitably cause Construction dust

Method used

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Effect test

Embodiment 1

[0018] A kind of preparation method of photocatalytic degradation type dust suppressant, with TiO 2 The nanoparticle material is a photocatalyst, β-modified starch is used as a film-forming agent, and treated soil powder is used as a filler. After heating and mixing, it is made into a latex-like liquid. The steps are as follows:

[0019] 1) Soil powder pretreatment: remove impurities such as plant roots and broken leaves in the soil, and pass through a 2mm sieve after crushing to obtain 30kg of soil powder;

[0020] 2) β-modified starch pretreatment: crush the β-modified starch through a 1.5mm sieve to obtain 5kg of β-modified starch powder;

[0021] 3) Mix the above 5kg β-modified starch powder with 95kg water to form an emulsion, heat to 90°C to make it gelatinize, and the reaction time is 50min to form a paste liquid;

[0022] 4) Add 50g of photocatalyst-TiO to the above pasty liquid under the stirring condition of 100rpm 2 Nanoparticle material, after mixing, a latex-lik...

Embodiment 2

[0027] A kind of preparation method of photocatalytic degradation type dust suppressant, with TiO 2 The nanoparticle material is a photocatalyst, β-modified starch is used as a film-forming agent, and treated soil powder is used as a filler. After heating and mixing, it is made into a latex-like liquid. The steps are as follows:

[0028] 1) Soil powder pretreatment: remove plant roots, broken leaves, etc. in the soil, and pass through a 1mm sieve after crushing to obtain 40kg of soil powder;

[0029] 2) β-modified starch pretreatment: crush the β-modified starch through a 1mm sieve to obtain 8kg of β-modified starch powder;

[0030] 3) Mix the above 8kg β-modified starch powder with 92kg water to form an emulsion, heat to 100°C to make it gelatinize, and the reaction time is 40min to form a paste liquid;

[0031] 4) Add 80g of photocatalyst-TiO to the above pasty liquid under the stirring condition of 120rpm 2 Nanoparticle material, after mixing, a latex-like liquid is obtai...

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Abstract

The invention discloses a method for preparing a photocatalytic degradation-type dust suppressant; TiO2 nano particle material is used as a photocatalyst; beta modified starch is used as a film forming agent; processed soil powder is used as a filler, and above materials are heated and mixed to prepare emulsion liquid; the method comprises the following steps: 1) removing impurities such as plant root hairs, leaves and the like in the soil, and crushing to obtain the soil powder; 2) crushing the beta modified starch to obtain the powder, adding water to the powder so as to obtain emulsion; heating and gelatinizing; adding the photocatalyst TiO2 nano particle material in a stirring manner so as to obtain the emulsion liquid; and 3) mixing the emulsion liquid with the soil powder evenly so as to obtain a product. According to advantages of the invention, a covering layer formed by the dust suppressant can effectively prevent particle-shaped material from discharging dust to air; the TiO2 nano particle material has high photocatalysis activity; therefore, the covering layer has good degradability in natural environment; and the method for preparing the dust suppressant is characterized by simple technology, easy implementation and is benefit for large-scale popularization and application.

Description

【Technical field】 [0001] The invention relates to the technical field of dust suppressant processing, in particular to a preparation method of a photocatalytic degradation type dust suppressant. 【Background technique】 [0002] At present, many cities in China are in the peak period of infrastructure construction. During the construction process, the management is not perfect, the stockpile is not strictly shielded, and the project implementation period is long. Various particles and aerosol ions settled on the ground will enter the air again, which will inevitably cause Building dust. In addition, coal, slag, ash, sand, stone and other powdery and granular goods, construction and domestic waste, etc., the dust caused by the transportation and stacking process, the impact on the city can not be ignored, how to reduce the impact of TSP (total suspended particulate matter) on the environment pollution has attracted great attention. 【Content of invention】 [0003] The purpos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/22C08L3/04
Inventor 孙有光尹静孙光远
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
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