New application of calcium peroxide and fire coal combustion-supporting solid sulfide additive

Abstract

The invention discloses a new application of calcium peroxide and a fire coal combustion-supporting solid sulfide additive. The calcium peroxide is taken as a fire coal combustion-supporting catalyzer which is added to the fire coals to be subject to even physical mixing together with the fire coals, thereby being used for improving combustion performance and combustion efficiency of the fire coals. The fire coal combustion-supporting solid sulfide additive is composed of the calcium peroxide and sulfur fixing agent, wherein the calcium peroxide accounts for 4.8%-9.1% and the sulphur fixing agent accounts for 90.9%-95.2%. In the invention, application fields and utilization occasions of the calcium peroxide are broadened and the calcium peroxide and the obtained combustion-supporting solid sulfide additive are added with a small additive amount, thus being capable of reducing addition cost. The invention can be applied to various coals and equipment, is in no need of special equipment and has wide applicable range. The physical mixing is adopted for the addition, thereby having simple technology and generating no secondary pollution. The calcium peroxide is used flexibly, not only being capable of being used independently, but also assisting other sulphur fixing agents to improve solid sulfur effect.

Description

technical field [0001] The invention relates to a new application of calcium peroxide and a coal-burning combustion-supporting sulfur-fixing additive invented based on the new application of calcium peroxide. The additive is used to improve the combustion performance of coal combustion, increase the combustion rate of coal combustion, improve the effect of sulfur fixation, and effectively reduce the release of sulfur dioxide gas during coal combustion. Background technique [0002] Coal is one of the main energy sources in our country. At present, direct combustion is still the main means of utilizing coal. However, the combustion of coal has problems such as low utilization efficiency and a large amount of harmful gas emissions. Catalytic combustion is an important means to improve the combustion performance of coal, and has been used in power generation boilers, entrained bed, cement industry, blast furnace coal injection and so on. However, there are many problems in ...

AI Technical Summary

Problems solved by technology

However, the sulfur fixative CaCO 3 The CaO formed after calcination is prone to sintering at high temperature in the furnace, and the porosity is significantly reduced, resulting in a greatly reduced reactivity

In addition, some combustion-supporting sulfur-fixing composite additives, such as patents CN95100922.2 and CN02109923.5, also contain alkali metal and halogen compounds, which limit the use of their products

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