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Smectite-silica sol modified bentonite PM2.5 collector and application thereof

A technology of bentonite and montmorillonite, applied in the field of trapping agent for PM2.5 fine particles and gaseous precursors of secondary particles

Active Publication Date: 2014-02-05
长沙紫宸科技开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008]Although the above treatment methods have certain effects on local space, they are very weak in solving the problem of PM2.5 pollution in the earth's ambient atmosphere. Internationally renowned scientists use satellite measurement data The PM2.5 distribution map made with computer simulation information shows that in the future, China's densely populated and economically developed areas will be in areas with the highest concentration of fine particulate matter, and PM2.5 pollution worldwide will face a severe situation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Select manually sorted and dried sodium-based bentonite with an average montmorillonite content of 91%, select anhydrous block granular sodium water glass with a modulus of 2.6, and carry out batching according to the bentonite: water glass mass ratio of 75:25, and grind together to form Fineness of 80 μm sieves the remaining fine powder of <8%, which is to make a powdery montmorillonite-silica sol modified bentonite PM2.5 collector.

[0032] Take the powdery montmorillonite-silica sol modified bentonite PM2.5 collector, add 1% potassium permanganate powder, mix evenly, make a household air purification disinfectant, hang it with gauze, and add it to the family The indoor water curtain device is made into suspended glue in water to clean the water curtain, and the indoor air feels very fresh.

[0033] Take one part of the powdery montmorillonite-silica sol modified bentonite PM2.5 trapping agent and add water to make a powdery PM2.5 trapping agent containing moisture (a...

Embodiment 2

[0035] Choose manually sorted and dried calcium-based bentonite, with an average montmorillonite content of 90%; choose soda ash as the sodiumizing agent for calcium-based bentonite, use dry sodiumization method, and use anhydrous powdery potassium sodium water glass with a modulus of 2 , according to bentonite: soda ash: water glass mass ratio is 68: 4: 28 ingredients, grind together into powder with a fineness of 80 μm sieve < 10%, that is to make a powdery montmorillonite-silica sol modified bentonite PM2 .5 Collectors.

[0036] Take two parts of the powdery montmorillonite-silica sol modified bentonite PM2.5 trapping agent, add water respectively to make a wet (add a small amount of water, mix and age at a high speed) powdery PM2.5 trapping agent and suspension In the liquid state of glue (add about 35 times of water and stir well) PM2.5 trapping agent, it was tested in a gas plant. The dust collection facility of the gas plant is a first-level cyclone dust removal and a ...

Embodiment 3

[0038] Select the polyaluminum column modified bentonite powder of sodiumization, the montmorillonite content is 89% on average, select the sodium water glass solution that modulus is 1.9, specific gravity 1.5 for use, be 35 parts of sodium bentonite powders by mass ratio: 65 parts of water glass solution Ingredients, stirring, during the stirring process, add 1 part of auxiliary material caustic soda, 0.5 part of anionic surfactant sodium lauryl sulfate, and stir evenly to make a plastic sticky paste-like montmorillonite-silica sol modified bentonite PM2 .5 Collecting agent, add any amount of water and stir evenly to form a suspension gel.

[0039] Take the above-mentioned plastic sticky montmorillonite-silica sol modified bentonite collector and add 20 times of water to stir it into a suspension colloid, and simulate the air purification test of heavy pollution haze gas adsorption absorption in a large workshop of an abandoned factory. First use cotton fiber rope and cloth t...

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Abstract

The invention relates to a smectite-silica sol modified bentonite PM2.5 collector and application thereof. The smectite-silica sol modified bentonite PM2.5 collector is composed of a main component and an auxiliary component, wherein the main component is composed of bentonite and water glass in a mass ratio of (35-98):(65-2); the auxiliary component is the compound which can not generate an antagonistic action on absorption and absorption functions of the smectite-silica sol; and the auxiliary component accounts for 0-30 wt% of the main component (bentonite and water glass). The PM2.5 collector has the advantages of wide raw material sources, cheap raw materials, simple application method and favorable economical efficiency, and is beneficial to popularization. The PM2.5 collector can adsorb, condense and purify PM2.5 fine particles, and can also adsorb, absorb and condense PM2.5 secondary particle gas-state precursor pollutants, thereby solving the problem of atmospheric environment pollution caused by PM2.5 and reducing or relieving the harmful influence of acid rain on the ecological environment.

Description

technical field [0001] The invention relates to a PM2.5 trapping agent and application thereof, in particular to a trapping agent for PM10, especially PM2.5 fine particulate matter and secondary particulate matter gaseous precursors in gas or airflow, and its application. Background technique [0002] Currently, with PM2.5 and acid rain, ozone (O 3 ) characterized by regional complex air pollution is becoming increasingly prominent. PM2.5 refers to particulate matter in the ambient air with an aerodynamic equivalent diameter less than or equal to 2.5 microns, also known as fine particulate matter. PM2.5 comes from both primary particulate matter emissions and from SO 2 , NO x , VOCS, NH 3 The secondary particles generated by the secondary reaction of the precursors, these primary particles and the gaseous precursors of the secondary particles, adopt the current conventional dust collection and dust removal measures such as the best electric dust removal and bag dust re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D47/00B01D53/02B01D53/14
Inventor 尹无忌
Owner 长沙紫宸科技开发有限公司
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