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Environment-friendly sand-fixation dust depressor preparation method

A dust suppressant and environment-friendly technology, applied in the field of preparation of environment-friendly sand-fixing and dust suppressant, can solve the problems of corrosiveness, high residual rate, plant and soil damage, etc., and achieves good stability, broad application prospects, good Effect of dust suppression effect

Inactive Publication Date: 2017-05-17
CHANGZHOU DINGRI ENVIRONMENTAL PROTECTION 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 problems that most of the currently commercially available dust suppressants cause secondary pollution, are corrosive, have certain harm to plants and soil, are not easy to degrade, and have a high residual rate, the present invention provides a The invention relates to a preparation method of an environment-friendly sand-fixing and dust-suppressing agent. The invention uses papermaking black liquor as a raw material to turn waste into treasure, extracts refined lignin, then compound the refined lignin with Artemisia annua seed glue, and cross-link in sodium hydroxide solution to modify Finally, compound with sodium dodecylbenzene sulfonate, polyvinyl alcohol, etc. to obtain an environmentally friendly sand-fixing and dust-suppressing agent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0017] Measure 30L papermaking black liquor, mix it with 30L deionized water to form a dilution, add 210g of magnesium sulfate to the dilution, stir and heat at 300r / min for 50min at 70°C, then transfer to a centrifuge, Centrifuge and separate for 15 minutes, collect the upper liquid to obtain the pretreated papermaking black liquor; add 30% sulfuric acid solution to the above pretreated papermaking black liquor until the pH of the pretreated papermaking black liquor is 2.5, and stand at 60°C Flocculate for 1 hour, then filter, soak the filter residue in 10L of deionized water, stir at 300r / min for 20min, then adjust the pH to 6.0 with a mass fraction of 1% sulfuric acid solution to obtain crude lignin liquid; measure 10L of the above crude lignin liquid , and added 500mL of absolute ethanol, stirred at 300r / min for 30min, then suction filtered, collected the filtrate, then adjusted the pH of the filtrate to 2.5 with a mass fraction of 5% sulfuric acid solution, stood at 60°C f...

example 2

[0020] Measure 40L of papermaking black liquor, mix it with 40L deionized water to form a dilution, add 300g of magnesium sulfate to the dilution, stir and heat at 350r / min for 55min at 75°C, then transfer to a centrifuge, Centrifuge and separate for 18 minutes, collect the upper liquid to obtain pretreated papermaking black liquor; add sulfuric acid solution with a mass fraction of 30% to the above pretreated papermaking black liquor until the pH of the pretreated papermaking black liquor is 2.3, and stand at 66°C Flocculate for 1.5 hours, then filter, soak the filter residue in 15L of deionized water, stir at 360r / min for 24min, then adjust the pH to 5.8 with a mass fraction of 1% sulfuric acid solution to obtain a lignin crude liquid; measure 11L of the above lignin crude solution, and added 560mL of absolute ethanol, stirred at 320r / min for 36min, then suction filtered, collected the filtrate, then adjusted the pH of the filtrate to 2.3 with a mass fraction of 5% sulfuric a...

example 3

[0023]Measure 50L of papermaking black liquor, mix it with 50L deionized water to form a dilution, add 350g of magnesium sulfate to the dilution, stir and heat at 400r / min for 60min at 80°C, then transfer to a centrifuge, Centrifuge and separate for 20 minutes, collect the upper liquid to obtain the pretreated papermaking black liquor; add sulfuric acid solution with a mass fraction of 30% to the above pretreated papermaking black liquor until the pH of the pretreated papermaking black liquor is 2.0, and stand at 70°C Flocculate for 2 hours, then filter, soak the filter residue in 20L of deionized water, stir at 400r / min for 30min, then adjust the pH to 5.5 with a mass fraction of 1% sulfuric acid solution to obtain crude lignin liquid; measure 12L of the above crude lignin liquid , and added 600mL of absolute ethanol, stirred at 400r / min for 40min, then suction filtered, collected the filtrate, then adjusted the pH of the filtrate to 2.0 with a mass fraction of 5% sulfuric aci...

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Abstract

The invention relates to an environment-friendly sand-fixation dust depressor preparation method and belongs to the technical field of dust depressors. The preparation method comprises the steps that papermaking black liquor is utilized as a raw material to turn waste into wealth, refined lignin is extracted, the refined lignin is compounded with sa-son seed gum, then the refined lignin is crosslinking modified in a sodium hydroxide solution, and finally the refined lignin is compounded with sodium dodecyl benzene sulfonate, polyving alcohol and the like to obtain an environment-friendly sand-fixation dust depressor. The environment-friendly sand-fixation dust depressor prepared through the preparation method provided by the invention is prone to forming a layer of film on the surface of soil after being sprayed, so that an effect of protecting surface soil is obtained; when being used in normal temperature, the environment-friendly sand-fixation dust depressor has better bonding performance; moisture preserving time can be 100h or more, so that the environment-friendly sand-fixation dust depressor has good moisture retention; furthermore, the environment-friendly sand-fixation dust depressor can effectively resist to rain wash, has better water stability and effectively improves dust suppression efficiency.

Description

technical field [0001] The invention relates to a preparation method of an environment-friendly sand-fixing and dust-suppressing agent, belonging to the technical field of dust-suppressing agents. Background technique [0002] Dust refers to solid particles suspended in the air. According to the International Organization for Standardization, suspended solids with a particle size of less than 75 μm are defined as dust. There are many sources of dust, such as urban expansion, mining and quarrying, coal transportation, metal smelting and a series of fields closely related to human activities and industrial development, all of which inevitably produce a large amount of dust to a certain extent; at the same time, artificial damage to vegetation causes Land desertification, and then the formation of wind and sand weather is also a very important reason. Soil and rocks are split into many fine particles after weathering, and pollen, spores and other organic particles float in the...

Claims

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Application Information

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IPC IPC(8): C09K3/22
CPCC09K3/22
Inventor 杨阳
Owner CHANGZHOU DINGRI ENVIRONMENTAL PROTECTION TECH
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