CN103381320A - Microporous filter core for filtration and preparation method thereof - Google Patents

Abstract

The invention provides a microporous filter core for filtration and a preparation method thereof. The invention is characterized in that the microporous filter core is prepared from the following raw materials by weight: 34 to 36 parts of diatomite, 6 to 8 parts of active carbon, 21 to 23 parts of high density polyethylene, 8 to 10 parts of Chinese medical stone, 4 to 6 parts of a silane coupling agent KH550, 7 to 9 parts of calcium chloride, 9 to 12 parts of sodium metasilicate, 2 to 3 parts of ammonium chloride, 25 to 35 parts of modified bentonite and a proper amount of water. According to the invention, diatomite has a great number of micropores and good adsorptivity; cooperation between active carbon and diatomite enables adsorption capacity of the filter core to be improved; and the microporous filter core provided by the invention has the protruding advantages of high purifying efficiency, small pressure loss, corrosion resistance, a long service life, capacity of removing fine particles in air, etc.

Description

A kind of filtering micropore filter core and preparation method thereof

Technical field

The invention belongs to the filtering material technical field, specifically a kind of filtering micropore filter core and preparation method thereof.

Background technology

The filtering material purposes is very extensive, is widely used in the industry such as chemical industry, electric power, metallurgy, oil, electronic apparatus, machinery; Modal have an air filter for automobile, is used for filtering the air that enters engine, and the mechanical admixture compositions such as airborne particle, particulate are stopped, prevents that these compositions from entering in gasoline, diesel oil or machine oil, guarantees engine work.Also have a large amount of filtering materials to be used for air handling system, ambient air pollutes very serious now, greatly be detrimental to health, air filting material can be with the various deleterious particle thing absorption of air, prevent from entering people's life or working environment, reduce the human lung to the suction of the harmful substances such as particle, improve people's quality of life, reduce the generation of disease.Some is used for water filtration and sewage disposal, for separating of the heavy metal in water or harmful components.Existing filtering material mainly contains ceramic honey comb, filter paper, steel wire etc.Existing honeycomb ceramic filter material feedstock is joined function singleness, can not satisfy the requirement of technology development.

Summary of the invention

The purpose of this invention is to provide a kind of filtering micropore filter core and preparation method thereof.

The technical solution adopted in the present invention is:

A kind of filtering micropore filter core is characterized in that being made by the raw material of following weight portion:

Diatomite 34-36, active carbon 6-8, high density polyethylene (HDPE) 21-23, medical stone 8-10, Silane coupling agent KH550 4-6, calcium chloride 7-9, sodium metasilicate 9-12, ammonium chloride 2-3, modified alta-mud 25-35, water are appropriate.

Described modified alta-mud is made by following methods:

Bentonite is put into 520-540 ℃ of calcining 3-4 hour, take out, cooling, put into the 10-12% hydrochloric acid solution and soaked 2-3 hour, then put into the 10-12% sodium hydroxide solution and soaked 1-2 hour, take out, clean the oven dry pulverize with pure water; Add again the aluminium nitride that is equivalent to bentonite weight 35-40%, the Dogbane Leaf of 16-18%, the alum powder of 2-3%, the zeolite powder of 2-3%, the tungsten carbide powder of 3-4%, mix and blend 30-40 minute, and then spray into and be equivalent to bentonite weight 5-7%'s Crosslinking agent TAC, stirred 40-50 minute under 12000-15000 rev/min, and get final product.

The preparation method of described filtering micropore filter core is characterized in that comprising the following steps:

With medical stone, diatomite at 560-600 ℃ of lower roasting 3-4 hour, then pulverize, after cleaning with the 3-4% hydrochloric acid solution, oven dry, then even with other mixing of materials, vacuum pugging, compressing, send into sintering in car tunnel furnace, first at 100-110 ℃ of lower sintering 4-5 hour, then, at 190-210 ℃ of lower sintering 120-150 minute, cooling after, take out, the sodium bicarbonate solution of putting into 4-6% soaked 3-4 hour, then, the liquor potassic permanganate of putting into 300-400ppm soaked 12-15 hour, after taking-up, use the clear water edulcoration, dry and get final product.

Diatomite of the present invention has a lot of micropores, excellent adsorption, and active carbon coordinates diatomite, improves the adsorption capacity of filter core, and the present invention has that purification efficiency is high, the pressure loss is little, corrosion-resistant, long service life, remove the outstanding advantages such as airborne micronic dust.The present invention can be used for the air filtration of air handling system, also can be used for water filtration, can also be used for the air-breathing filtration of automobile filter, be applicable to various environment abominable places.

The specific embodiment

A kind of filtering micropore filter core, made by the raw material of following weight portion (kilogram):

Diatomite 34, active carbon 8, high density polyethylene (HDPE) 23, medical stone 10, Silane coupling agent KH550 6, calcium chloride 7, sodium metasilicate 12, ammonium chloride 3, modified alta-mud 35, water are appropriate.

Described modified alta-mud is made by following methods:

Bentonite is put into 520-540 ℃ of calcining 3-4 hour, take out, cooling, put into the 10-12% hydrochloric acid solution and soaked 2-3 hour, then put into the 10-12% sodium hydroxide solution and soaked 1-2 hour, take out, clean the oven dry pulverize with pure water; Add again the aluminium nitride that is equivalent to bentonite weight 40%, 18% Dogbane Leaf, 3% alum powder, 3% zeolite powder, 4% tungsten carbide powder, mix and blend 30-40 minute, and then spray into and be equivalent to bentonite weight 7% Crosslinking agent TAC, stirred 40-50 minute under 12000-15000 rev/min, and get final product.

The preparation method of filtering micropore filter core comprises the following steps:

With medical stone, diatomite at 560-600 ℃ of lower roasting 3-4 hour, then pulverize, after cleaning with the 3-4% hydrochloric acid solution, oven dry, then even with other mixing of materials, vacuum pugging, compressing, send into sintering in car tunnel furnace, first at 100-110 ℃ of lower sintering 4-5 hour, then, at 190-210 ℃ of lower sintering 120-150 minute, cooling after, take out, the sodium bicarbonate solution of putting into 4-6% soaked 3-4 hour, then, the liquor potassic permanganate of putting into 300-400ppm soaked 12-15 hour, after taking-up, use the clear water edulcoration, dry and get final product.

Sample important technological parameters of the present invention is: heat shock resistance: 150 ℃-20 ℃ air-cooled does not once split; 150 ℃ of maximum operation (service) temperatures.The technical indicator of exhaust gas purification and treatment device is: capture micronic dust efficient 〉=99%; Outlet discharging soot dust granule substrate concentration≤30mg/m3; The dust granules minimum grain size scope 1-10 μ m that catches.

Claims (2)

1. filtering micropore filter core is characterized in that being made by the raw material of following weight portion:

Diatomite 34-36, active carbon 6-8, high density polyethylene (HDPE) 21-23, medical stone 8-10, Silane coupling agent KH550 4-6, calcium chloride 7-9, sodium metasilicate 9-12, ammonium chloride 2-3, modified alta-mud 25-35, water are appropriate;

Described modified alta-mud is made by following methods:

Bentonite is put into 520-540 ℃ of calcining 3-4 hour, take out, cooling, put into the 10-12% hydrochloric acid solution and soaked 2-3 hour, then put into the 10-12% sodium hydroxide solution and soaked 1-2 hour, take out, clean the oven dry pulverize with pure water; Add again the aluminium nitride that is equivalent to bentonite weight 35-40%, the Dogbane Leaf of 16-18%, the alum powder of 2-3%, the zeolite powder of 2-3%, the tungsten carbide powder of 3-4%, mix and blend 30-40 minute, and then spray into and be equivalent to bentonite weight 5-7%'s Crosslinking agent TAC, stirred 40-50 minute under 12000-15000 rev/min, and get final product.

2. the preparation method of filtering micropore filter core according to claim 1 is characterized in that comprising the following steps:

With medical stone, diatomite at 560-600 ℃ of lower roasting 3-4 hour, then pulverize, after cleaning with the 3-4% hydrochloric acid solution, oven dry, then even with other mixing of materials, vacuum pugging, compressing, send into sintering in car tunnel furnace, first at 100-110 ℃ of lower sintering 4-5 hour, then, at 190-210 ℃ of lower sintering 120-150 minute, cooling after, take out, the sodium bicarbonate solution of putting into 4-6% soaked 3-4 hour, then, the liquor potassic permanganate of putting into 300-400ppm soaked 12-15 hour, after taking-up, use the clear water edulcoration, dry and get final product.