CN104826394A - Acid-and-alkali-corrosion resistant adsorption filtration agent and manufacturing method thereof - Google Patents

Abstract

The invention discloses an acid-and-alkali-corrosion resistant adsorption filtration agent and a manufacturing method thereof. The agent is characterized by being prepared from the following raw materials by weight: 56 to 66 parts of gypsum, 20 to 26 parts of silica micropowder, 15 to 23 parts of alkali residue, 30 to 35 parts of coconut-shell activated carbon, 2.6 to 3.7 parts of nanometer ferroferric oxide, 4.3 to 6.1 parts of nanometer titanium dioxide, 1 to 3 parts of sodium borohydride, 0.4 to 0.7 part of sodium polyacrylate, 2 to 3 parts of ferric nitrate, 6 to 9 parts of bamboo vinegar, 4 to 6 parts of methyltriethoxysilane and a proper amount of water. According to the invention, the gypsum and silica micropowder are used as raw materials and mixed with the alkali residue, coconut-shell activated carbon, bamboo vinegar, etc., and the nanometer titanium dioxide and nanometer ferroferric oxide are loaded on the surface of the gypsum through physical and chemical modification methods, so organic pollutants can be decomposed into carbon dioxide and oxygen; thus, harmful substances adsorbed on the gypsum are reduced, and the service life of the adsorption filtration agent is prolonged; and the prepared adsorption filtration agent has the advantages of rough and hard surface, large surface area, high porosity, good deodorization, adsorption and filtration properties, low cost and capability of improving acid-and-alkali-corrosion resistance of filter materials when sprayed on the filter materials.

Description

Absorption filter agent of a kind of acid-alkali-corrosive-resisting and preparation method thereof

Technical field

The present invention relates to absorption filter agent field of material technology, be specifically related to absorption filter agent of a kind of acid-alkali-corrosive-resisting and preparation method thereof.

Background technology

Along with the fast development of process of industrialization, air quality problems is increasingly serious, especially the healthy of people in nationwide haze serious threat in recent years, the side effect brought thus is also day by day serious, wherein arch-criminal is exactly the flue dust of the discharge such as kiln head and tail, furnace of calcium carbide, ferro-alloy furnace of the industries such as domestic building materials, chemical industry, metallurgy, and cleaner the most frequently used is at present exactly sack cleaner.Sack cleaner is a kind of dry type dust filtration device, after filtrate uses a period of time, due to effects such as sieving, collision, delay, diffusion, electrostatic, one deck dust has been gathered on filter bag surface, this layer of dust is called bonding layer, and in motion process after this, bonding layer has become the main filtration layer of filtrate, rely on the effect of bonding layer, the filtrate that mesh is larger also can obtain higher filter efficiency.But the utilization of bonding layer is abundant not in real-world operation process, cause that dust removing effects is low, the consequences such as erosion corrosion situation is serious after filtrate Long-Time Service, the absorption filter agent being badly in need of a kind of efficient function diversification is sprayed on filter material surface and is used as bonding layer use before deduster is started working, both can improve the dust removing effects of deduster, the harmful exhaust that absorption is fallen to discharge can also have been filtered.

Summary of the invention

Object of the present invention is just to provide absorption filter agent of a kind of acid-alkali-corrosive-resisting and preparation method thereof, to overcome the deficiencies in the prior art.

The object of the present invention is achieved like this:

A kind of absorption filter agent of acid-alkali-corrosive-resisting, it is characterized in that, be made up of the raw material of following weight portion: gypsum 56-66, silicon powder 20-26, alkaline residue 15-23, cocoanut active charcoal 30-35, nano ferriferrous oxide 2.6-3.7, nano titanium oxide 4.3-6.1, sodium borohydride 1-3, Sodium Polyacrylate 0.4-0.7, ferric nitrate 2-3, bamboo vinegar 6-9, MTES 4-6, suitable quantity of water.

The preparation method of the absorption filter agent of described a kind of acid-alkali-corrosive-resisting, is characterized in that comprising the following steps:

(1) by nano ferriferrous oxide, nano titanium oxide, bamboo vinegar, MTES agitation grinding 1-2 hour, at 150-180 DEG C, obtained modified nano-titanium dioxide is dried;

(2) get gypsum in 630-760 DEG C of high-temperature calcination process 2-4 hour, cooling is pulverized to drop in high mixer and is added modified nano-titanium dioxide in 180-210 DEG C of mix and blend 30-50 minute;

(3) sodium borohydride is added water to be stirred to dissolve completely, add step (2) material stirring 10-20 minute, be warming up to 80-120 DEG C and continue to stir 30-40 minute, then add silicon powder, cocoanut active charcoal and other residual components dispersion grinding 2-3 hour, granulation is dried, discharging.

The present invention has following beneficial effect: the present invention adopts gypsum, silicon powder is raw material and is equipped with alkaline residue, cocoanut active charcoal, bamboo vinegar etc., by physical and chemical modified method by nano titanium oxide, nano ferriferrous oxide is carried on gypsum surface, organic pollution can be decomposed into carbon dioxide and oxygen, thus reduce the harmful substance be adsorbed on gypsum, extend absorption filter agent service life, obtained absorption filter agent rough surface is hard, specific area is large, porosity is high, deodorizing Adsorption Filtration Properties is good, cost is low, be sprayed on filtrate and can improve its acid-alkali-corrosive-resisting.

Detailed description of the invention

The absorption filter agent of described a kind of acid-alkali-corrosive-resisting, it is characterized in that, be made up of the raw material of following weight portion: gypsum 63, silicon powder 22, alkaline residue 17, cocoanut active charcoal 31, nano ferriferrous oxide 2.8, nano titanium oxide 4.7, sodium borohydride 1, Sodium Polyacrylate 0.5, ferric nitrate 3, bamboo vinegar 8, MTES 4, suitable quantity of water.

Preparation method comprises the following steps:

(1) by nano ferriferrous oxide, nano titanium oxide, bamboo vinegar, MTES agitation grinding 1-2 hour, at 150-180 DEG C, obtained modified nano-titanium dioxide is dried;

(2) get gypsum in 630-760 DEG C of high-temperature calcination process 2-4 hour, cooling is pulverized to drop in high mixer and is added modified nano-titanium dioxide in 180-210 DEG C of mix and blend 30-50 minute;

(3) sodium borohydride is added water to be stirred to dissolve completely, add step (2) material stirring 10-20 minute, be warming up to 80-120 DEG C and continue to stir 30-40 minute, then add silicon powder, cocoanut active charcoal and other residual components dispersion grinding 2-3 hour, granulation is dried, discharging.

The specific area of the absorption filter agent using the present invention to produce is 295 ㎡/g, efficiency of dust collection >=98.6%.

Claims (2)

1. the absorption filter agent of an acid-alkali-corrosive-resisting, it is characterized in that, be made up of the raw material of following weight portion: gypsum 56-66, silicon powder 20-26, alkaline residue 15-23, cocoanut active charcoal 30-35, nano ferriferrous oxide 2.6-3.7, nano titanium oxide 4.3-6.1, sodium borohydride 1-3, Sodium Polyacrylate 0.4-0.7, ferric nitrate 2-3, bamboo vinegar 6-9, MTES 4-6, suitable quantity of water.

2. the preparation method of the absorption filter agent of a kind of acid-alkali-corrosive-resisting according to claim 1, is characterized in that comprising the following steps:

(1) by nano ferriferrous oxide, nano titanium oxide, bamboo vinegar, MTES agitation grinding 1-2 hour, at 150-180 DEG C, obtained modified nano-titanium dioxide is dried;

(2) get gypsum in 630-760 DEG C of high-temperature calcination process 2-4 hour, cooling is pulverized to drop in high mixer and is added modified nano-titanium dioxide in 180-210 DEG C of mix and blend 30-50 minute;

(3) sodium borohydride is added water to be stirred to dissolve completely, add step (2) material stirring 10-20 minute, be warming up to 80-120 DEG C and continue to stir 30-40 minute, then add silicon powder, cocoanut active charcoal and other residual components dispersion grinding 2-3 hour, granulation is dried, discharging.