CN104084122A - Ammonia gas adsorbent prepared from coal-fired slag modified by cobalt chloride - Google Patents

Abstract

The invention aims at providing an ammonia gas adsorbent prepared from coal-fired slag modified by cobalt chloride. According to the technical scheme for achieving the aim, a preparation method comprises the following steps: grinding coal-fired slag; fetching a certain amount of slag powder, and adding the slag powder into 5% of hydrochloric acid solution by mass; stirring slowly for 1h-5h to remove organic matter on the surface and other impurities; then filtering and taking out the product; repeatedly flushing the product with deionized water for several times; adding the product into a 1%-10% cobalt chloride solution of transition element chloride, and impregnating at 20 DEG C for 6h-12h; taking out the product, roasting at 600 DEG C for 1h-5h and bottling for later use to obtain the ammonia gas adsorbent.

Description

The ammonia gas adsorbent of the coal-fired slag of a kind of cobalt chloride modification

Technical field

The present invention relates to ammonia adsorbing domain, be specifically related to the ammonia gas adsorbent of the coal-fired slag of a kind of cobalt chloride modification.

Background technology

Ammonia, inorganic compound, is gas under normal temperature, the gas of colourless irritant stench, soluble in water, when ammonia is water-soluble, amino molecule becomes a hydration ammonia with hydrone by Hydrogenbond, one hydration ammonia energy fraction is ionized into ammonium ion and hydroxide ion, therefore ammoniacal liquor shows alkalescent, the mucous membrane of energy skin ambustion, eyes, respiratory apparatus, people sucks too much, can cause lung swelling, thus dead.

Due to a large amount of generations of municipal sewage and industrial wastewater, and exhaust emissions, cause environment more and more to worsen.Situation day by day serious, causes control imperative.

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 the ammonia gas adsorbent of the coal-fired slag of a kind of cobalt chloride modification, 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:

By broken coal furnace ground-slag, get a certain amount of pulverized slag, put into mass fraction and be 5% hydrochloric acid solution, low rate mixing, to remove surface organic matter and other impurity, filters and takes out after 1-5h, repeatedly rinse several times by deionized water, put in the transition elements chloride cobalt chloride solution of 1-10%, at 20 DEG C of room temperatures, dipping takes out in 600 DEG C of roasting 1-5h after 6-12h again, bottle for subsequent use, obtain this ammonia adsorbent.

There is following distinguishing feature in the present invention:

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

(2) invent described ammonia absorbent preparation method simple, adsorption rate is high;

(3) invent described ammonia performance of the adsorbent and stablize, the life-span is long, can preserve for a long time use.

detailed description of the invention:

Embodiment 1:

By broken coal furnace ground-slag, take 100 g flyash, put into mass fraction and be 5% hydrochloric acid solution, low rate mixing, to remove surface organic matter and other impurity, filters and takes out after 1h, repeatedly rinse 3 times by deionized water, put in 1% transition elements chloride cobalt chloride solution, dipping at 20 DEG C of room temperatures takes out in 600 DEG C of roasting 1h after 6h again, bottle for subsequent use, obtain this ammonia adsorbent.

Embodiment 2:

By broken coal furnace ground-slag, take 100 g flyash, put into mass fraction and be 5% hydrochloric acid solution, low rate mixing, to remove surface organic matter and other impurity, filters and takes out after 3h, repeatedly rinse 3 times by deionized water, put in 5% transition elements chloride cobalt chloride solution, dipping at 20 DEG C of room temperatures takes out in 600 DEG C of roasting 3h after 8h again, bottle for subsequent use, obtain this ammonia adsorbent.

Embodiment 3:

By broken coal furnace ground-slag, take 100 g flyash, put into mass fraction and be 5% hydrochloric acid solution, low rate mixing, to remove surface organic matter and other impurity, filters and takes out after 5h, repeatedly rinse 3 times by deionized water, put in 10% transition elements chloride cobalt chloride solution, dipping at 20 DEG C of room temperatures takes out in 600 DEG C of roasting 5h after 12h again, bottle for subsequent use, obtain this ammonia adsorbent.

Claims (1)

1. the ammonia gas adsorbent that the invention discloses the coal-fired slag of a kind of cobalt chloride modification, for achieving the above object, the technical solution used in the present invention is as follows:

By broken coal furnace ground-slag, get a certain amount of pulverized slag, put into mass fraction and be 5% hydrochloric acid solution, low rate mixing, to remove surface organic matter and other impurity, filters and takes out after 1-5h, repeatedly rinse several times by deionized water, put in the transition elements chloride cobalt chloride solution of 1-10%, at 20 DEG C of room temperatures, dipping takes out in 600 DEG C of roasting 1-5h after 6-12h again, bottle for subsequent use, obtain this ammonia adsorbent.