CN104069805A - Formaldehyde adsorbent capable of modifying coal cinder through pyrogenic process - Google Patents

Abstract

The invention aims to provide a formaldehyde adsorbent capable of modifying coal cinder through the pyrogenic process. In order to realize the purpose, the invention adopts the technical scheme as follows: a certain amount of coal cinder is weighed, the coal cinder is uniformly mixed with 50-150 g of anhydrous sodium carbonate, fusion and calcination are performed for 1 h at the high temperature of 300 DEG C, the fused coal powder is cooled and ground, a certain amount of coal powder is weighed and mixed with 1-3 mol/L sodium hydroxide solution at the solid solution ratio of 1:5, the mixed solution is put in a drying oven and dried at 50-150 DEG C, the solid substance is cooled to be at room temperature and ground, and the formaldehyde adsorbent is obtained after the powder is sieved by a 200-mesh sieve.

Description

A kind of formaldehyde adsorbent to cinder modification by fire

Technical field

The present invention relates to formaldehyde absorbing field, be specifically related to a kind of formaldehyde adsorbent to cinder modification by fire.

Background technology

Formaldehyde (formaldehyde) is a kind of primary poisonous substance, is mainly to stimulate eye and respiratory mucosa on the impact of health, produces allergy, there is immunologic dysfunction, cause liver, injury of lungs, affect central nervous system, the inhereditary material in also can damaging cells.

Because formaldehyde synthetic has stronger cohesive, and can improve the hardness of sheet material and insect protected, antiseptic power, so formaldehyde is widely used among various building and ornament materials.

Absorption method is to process a kind of important physical chemistry method of harmful in waste water and waste gas and difficult degradation pollutant, and active carbon is the most frequently used sorbing material, but due to lack of material, cost is higher, regeneration is difficult etc., and reason is restricted its application.Taking industry and agricultural wastes as raw material, preparation and exploitation are cheap, to replace active carbon be the important directions that sorbing material is studied to efficient adsorption material.

Summary of the invention

The object of this invention is to provide a kind of formaldehyde adsorbent to cinder modification by fire, the lack of material existing to overcome prior art, the shortcoming that cost is high.For achieving the above object, the technical solution used in the present invention is as follows:

Take a certain amount of cinder, evenly mix with 50-150g natrium carbonicum calcinatum, melting calcining 1h under 300 DEG C of high temperature; By cooling the coal dust after melting, grind, more therefrom take a certain amount of, mix taking solid solution ratio as 1:5 with the sodium hydroxide solution of 1-3mol/L, mixed solution is put into drying box, at 50-150 DEG C, dry, after oven dry, be cooled to room temperature, grind, cross 200 mesh sieves and obtain this adsorbent.

There is following distinguishing feature in the present invention:

(1) invent described formaldehyde adsorbent, raw material sources are extensive, cheap;

(2) invent described formaldehyde adsorbent preparation method simple, adsorption rate is high;

(3) invent described formaldehyde adsorbent stable performance, the life-span is long, can preserve for a long time use.

detailed description of the invention:

Embodiment 1:

Take 50g cinder, evenly mix with 50g natrium carbonicum calcinatum, melting calcining 1h under 300 DEG C of high temperature; By cooling the coal dust after melting, grind, more therefrom take 50g, mix taking solid solution ratio as 1:5 with the sodium hydroxide solution of 1mol/L, mixed solution is put into drying box, at 50 DEG C, dry, after oven dry, be cooled to room temperature, grind, cross 200 mesh sieves and obtain this adsorbent.

Embodiment 2:

Take 50g cinder, evenly mix with 100g natrium carbonicum calcinatum, melting calcining 1h under 300 DEG C of high temperature; By cooling the coal dust after melting, grind, more therefrom take 50g, mix taking solid solution ratio as 1:5 with the sodium hydroxide solution of 2mol/L, mixed solution is put into drying box, at 100 DEG C, dry, after oven dry, be cooled to room temperature, grind, cross 200 mesh sieves and obtain this adsorbent.

Embodiment 3:

Take 50g cinder, evenly mix with 150g natrium carbonicum calcinatum, melting calcining 1h under 300 DEG C of high temperature; By cooling the coal dust after melting, grind, more therefrom take 50g, mix taking solid solution ratio as 1:5 with the sodium hydroxide solution of 3mol/L, mixed solution is put into drying box, at 150 DEG C, dry, after oven dry, be cooled to room temperature, grind, cross 200 mesh sieves and obtain this adsorbent.

Claims (1)

1. the invention discloses a kind of formaldehyde adsorbent to cinder modification by fire, for achieving the above object, the technical solution used in the present invention is as follows:

Take a certain amount of cinder, evenly mix with 50-150g natrium carbonicum calcinatum, melting calcining 1h under 300 DEG C of high temperature; By cooling the coal dust after melting, grind, more therefrom take a certain amount of, mix taking solid solution ratio as 1:5 with the sodium hydroxide solution of 1-3mol/L, mixed solution is put into drying box, at 50-150 DEG C, dry, after oven dry, be cooled to room temperature, grind, cross 200 mesh sieves and obtain this adsorbent.