CN104084118A

CN104084118A - Modified fire coal slag for efficiently adsorbing ammonia gas and preparation method of modified fire coal slag

Info

Publication number: CN104084118A
Application number: CN201410358632.5A
Authority: CN
Inventors: 不公告发明人
Original assignee: Qingdao Bo Ruilin New Material Co Ltd
Current assignee: Qingdao Bo Ruilin New Material Co Ltd
Priority date: 2014-07-26
Filing date: 2014-07-26
Publication date: 2014-10-08

Abstract

The invention aims at providing modified fire coal slag for efficiently adsorbing ammonia gas and a preparation method of the modified fire coal slag. For realizing the aim, the technical scheme adopted by the invention is as follows: the preparation method comprises the following steps: grinding the fire coal slag, taking a certain amount of slag powder, adding 10-50% phosphoric acid solution, dipping for 3-24 hours at room temperature and then drying, warming the solid substance after drying to preset temperature (30-700 DEG C) from the room temperature, keeping constant temperature for 2 hours, cooling to room temperature, taking out the final product and washing by using distilled water to neutral, drying, and bottling for later use to obtain the modified fire coal.

Description

Coal-fired slag of modification of a kind of efficient adsorption ammonia and preparation method thereof

Technical field

The present invention relates to ammonia adsorbing domain, be specifically related to coal-fired slag of modification of a kind of efficient adsorption ammonia and preparation method thereof.

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.Take industry and agricultural wastes is raw material, and 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 coal-fired slag of modification of a kind of efficient adsorption ammonia and preparation method thereof, 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:

Coal furnace ground-slag is broken, get a certain amount of pulverized slag, add the phosphoric acid solution of 10-50%, under room temperature, flood 3-24h, then dry.After dry, solid matter is risen to temperature (300-700 ℃) the insulation 2h pre-setting from room temperature, be cooled to room temperature, take out end product and be washed with distilled water to neutrality, dry, bottle standby, obtain the coal-fired slag of this modification.

In the present invention, there is following distinguishing feature:

(1) invent the coal-fired slag of described modification, raw material sources are extensive, cheap;

(2) invent the coal-fired slag preparation method of described modification simple, adsorption rate is high;

(3) invent the coal-fired slag stable performance of described modification, the life-span is long, can preserve for a long time use.

the specific embodiment:

Embodiment 1:

Coal furnace ground-slag is broken, take 100 g flyash, add 10% phosphoric acid solution 2L, under room temperature, flood 3h, then dry.After dry, solid matter is risen to the 300 ℃ of insulation 2h of temperature that pre-set from room temperature, be cooled to room temperature, take out end product and be washed with distilled water to neutrality, dry, bottle standby, obtain the coal-fired slag of this modification.

Embodiment 2:

Coal furnace ground-slag is broken, take 100 g flyash, add 30% phosphoric acid solution 2L, under room temperature, flood 12h, then dry.After dry, solid matter is risen to the 500 ℃ of insulation 2h of temperature that pre-set from room temperature, be cooled to room temperature, take out end product and be washed with distilled water to neutrality, dry, bottle standby, obtain the coal-fired slag of this modification.

Embodiment 3:

Coal furnace ground-slag is broken, take 100 g flyash, add 50% phosphoric acid solution 2L, under room temperature, flood 24h, then dry.After dry, solid matter is risen to the 700 ℃ of insulation 2h of temperature that pre-set from room temperature, be cooled to room temperature, take out end product and be washed with distilled water to neutrality, dry, bottle standby, obtain the coal-fired slag of this modification.

Claims

1. the invention discloses coal-fired slag of modification of a kind of efficient adsorption ammonia and preparation method thereof, for achieving the above object, the technical solution used in the present invention is as follows:

Coal furnace ground-slag is broken, get a certain amount of pulverized slag, add the phosphoric acid solution of 10-50%, under room temperature, flood 3-24h, then dry; After dry, solid matter is risen to temperature (300-700 ℃) the insulation 2h pre-setting from room temperature, be cooled to room temperature, take out end product and be washed with distilled water to neutrality, dry, bottle standby, obtain the coal-fired slag of this modification.