Environment-friendly desulfurizing powder and preparation method thereof

Abstract

The invention provides an environment-friendly desulfurizing powder and a preparation method thereof. The environment-friendly desulfurizing powder is prepared from the following raw materials by masspercentage: 65%-80% of a sulfur-fixing agent, 10%-30% of light rare earth waste, 1%-2% of an anti-caking agent, 1%-5% of active tricalcium phosphate and 1%-3% of microcrystalline cellulose, preferably, the sulfur-fixing agent comprises the following components by mass percent: 5%-15% of sodium carbonate, 10%-20% of ammonium carbonate, 20%-30% of aluminum carbonate, 10%-20% of magnesium carbonateand 30%-40% of calcium carbonate. The preparation method includes: mixing the above raw materials, and then performing calcinations at 500-700DEG C, preferably at 600DEG C. The desulfurizing powder isobtained by cooperation and combination of the sulfur-fixing agent composed of multiple active ingredients with other components in an optimal and effective ratio, and has the characteristics of stable structure, caking resistance, wider range of action temperature, and high desulphurization efficiency.

Description

technical field [0001] The invention belongs to the technical field of environment-friendly desulfurization materials, and in particular relates to an environment-friendly desulfurization powder and a preparation method thereof. Background technique [0002] my country is the country that uses the largest amount of fossil fuels in the world, among which the amount of coal used ranks first in the world. The sulfur dioxide produced by coal burning has caused serious pollution to the environment. my country's coal-consuming enterprises are mainly coal-fired power enterprises and coal-fired building materials enterprises. Researching high-efficiency and cost-effective desulfurization technologies for the above two industries has significant social significance and economic value. [0003] At present, in coal-fired power and coal-fired building materials enterprises, the most common and mainstream desulfurization technologies are wet desulfurization technology and dry desulfuriza...

AI Technical Summary

Problems solved by technology

The construction cost of wet desulfurization technology is expensive. Generally, the investment of a complete set of equipment is between 10 million and 20 million yuan, and the construction period is relatively long. The later equipment wears out, the operating cost is high, and the by-product calcium sulfate needs post-treatment; dry desulfurization The construction cost and construction period are better than wet desulfurization, but due to the limited adsorption capacity of commercially available calcium oxide and calcium hydroxide, the desulfurization effect is not ideal when used alone; the single active component makes the temperature range of the desulfurizer fixed; Moreover, the desulfurizer is easy to agglomerate, resulting in a decrease in the specific surface area of ​​the desulfurizer and low adsorption capacity

In the prior art, in order to improve the desulfurization effect of some products, compounds such as barium carbonate and vanadium pentoxide are added, but these substances are highly toxic compounds, which not only seriously threaten the personal safety of enterprise personnel, but also easily cause environmental pollution