Oxygenation decoking agent

Abstract

The invention discloses an oxygenation decoking agent. The oxygenation decoking agent consists of the following components by weight percent: 20 to 28 percent of potassium nitride/sodium nitride complex compound (KNO3.NaNO3), 21 to 45 percent of sodium carbonate or potassium carbonate, 19 to 43 percent of sodium chloride or potassium chloride, 1 to 5 percent of r-ferric oxide, 4 to 10 percent of silicon oxide and 2 to 4 percent of copper oxide. The oxygenation decoking agent has the advantages that coal and oil can be more sufficiently combusted, and the combustible in lime ash, carbon residue and flying ash is obviously reduced to about 0.09 percent, and the content of oxygen is increased, so that the air supply and air draught volume is reduced, and the power consumption of a fan is reduced by about 15 percent; the oxygenation decoking agent can be effectively adsorbed onto the surface of coke slag and chimney spots, the coke slag and the chimney spots are modified and loosened to automatically drop under the effect of a permeable film, a heated surface is cleaned, the heat conduction coefficient is increased by 40 times, the heat exchanging capacity is improved, the smoke discharging temperature is reduced by about 10 DEG C, the coal is saved by about 2 percent, the sulfur content in the flue gas is reduced by 21 to 50 percent, the slurry load of a desulphurization absorption tower is alleviated, the poisoning splashing and overflow phenomenon is reduced, the electricity consumption of a stirring motor is reduced by 20 to 21 percent or more, and the service life of a boiler is prolonged.

Description

technical field [0001] The invention relates to an additive in the combustion process of fuel coal and oil, in particular to an oxygen-increasing and decoking agent. Background technique [0002] At present, with the rapid development of my country's industry, the use of fuel coal and oil is increasing rapidly. During the combustion process of fuel coal and oil, volatile combustible hydrocarbons, hydrogen and other substances are decomposed, and enter the stage of vigorous combustion. After the stage, due to insufficient oxygen supply in the air, it cannot be fully burned, and the volatiles in the fuel are not easy to burn out, but decompose into free carbon tar and other substances, forming coking fouling, black smoke, carbon monoxide, various sulfur oxides, nitrogen oxides and other pollution gas, causing irreversible damage to the environment. And the combustion efficiency is reduced, the calorific value of the fuel cannot be fully utilized, resulting in waste of resources...

AI Technical Summary

Problems solved by technology

[0002] At present, with the rapid development of my country's industry, the use of fuel coal and oil is increasing rapidly. During the combustion process of fuel coal and oil, volatile combustible hydrocarbons, hydrogen and other substances are decomposed, and enter the stage of vigorous combustion. After the stage, due to insufficient oxygen supply in the air, it cannot be fully burned, and the volatiles in the fuel are not easy to burn out, but decompose into free carbon tar and other substances, forming coking fouling, black smoke, carbon monoxide, various sulfur oxides, nitrogen oxides and other pollution gas, causing irreversible damage to the environment

And the combustion efficiency is reduced, the calorific value of the fuel cannot be fully utilized, resulting in waste of resources. After long-term combustion, a thick coke layer and ash layer are formed in the combustion furnace, which has poor heat transfer and is not easy to fall off. It is more corrosive to combustion equipment. Strong, reducing the service life of combustion equipment

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