Optimization of fly ash drying equipment

Based on the inherent characteristics of low density, high moisture content, fine particle size and rheological properties of fly ash, we should study how to introduce the new type of fly ash drying energy-saving equipment system, promote the technical update and improve the comprehensive treatment efficacy. It can be introduced into the high temperature and high boiling furnace equipment technology, optimize the update rotary dryer, do a good job tracking technology, and then comprehensively enhance the practical work efficiency, optimize the effect of fly ash drying treatment to achieve high quality energy efficiency goals. The methods as following:
1. Using high-temperature rapid boiling furnace technology to achieve the goal of energy-saving fly ash drying
The combustion of the boiling furnace is a kind of combustion between the stratified combustion and the suspended combustion. The burning situation is: the fuel in the furnace layer of material height violently up and down somersault beating, as the water boiled in the pot boiling, was boiling state. Boiling furnace with enhanced combustion, heat transfer effect is good, simple structure, easy to achieve the advantages of mechanized operation. Basically with other hot stove cannot burn the poor quality of coal, such as calorific value of 4000kcal / kg of coal gangue and oil shale, burning rate of 95% or more. In addition, the boiling furnace hearth area can produce 2.8t / h ~ 3.3t / h hot flue gas, the thermal efficiency of other combustion furnace 2 to 4 times the sustainable supply dryer 600 ℃ ~ 1000 ℃ high temperature hot flue gas. Therefore, the boiling furnace is a high-performance furnace.
2. Optimize the rotary dryer equipment technology to enhance the efficiency of fly ash drying
The specific function of the drying equipment is to realize the material feeding by the throwing mode. Based on the high humidity of fly ash, it is easy to form a briquetting state. It will show a fixed parabolic path in the sprinkling of the drying equipment and form a void, which affects the effect of the material feeding. At the same time, the hot air flow enters from the low resistance hole, and the large resistance material curtain lacks the hot air circulation, which will hinder the effective fusion of the fly ash with the hot air and affect the drying effect. This can be optimized for rotary drying equipment, the introduction of advanced drying mode technology to enhance the drying efficiency.
3. Improve the dust collector comparative selection, and optimize the effect of fly ash drying
In general, the fly ash drying equipment used in the dust collection device for the gas box pulse dust and anti-blowing large bag equipment two categories. In the comparative selection stage, we should consider the wind pressure and the total amount of the standard. Should be based on drying equipment in the wind speed and air leakage coefficient of dust collector-related bearing capacity of the accounting. At the same time, based on the large amount of fly ash moisture content, in the drying treatment stage, will make liquid water into a gaseous mode, and rapid expansion. For this purpose should be measured in the air volume to improve the corresponding standards, so that the dust collector to become a common five times the device or twice. The location of the drying equipment connected to the boiling furnace is badly burned and the cause is that the total hot air is not pushed into the drying equipment inside the boiling furnace and remains in the mixing chamber and the inlet position. Drying effect of the formation of adverse effects, but also lead to equipment failure. Based on the influence of the corrosion of the drying equipment, the amount of flue gas and the high temperature level, it should be equipped with the adaptability of the dust collection device bag, choose the anti-corrosion and high temperature peritoneal material, and thereby improving the anti-jamming performance of the bag filter,and optimization of drying effect of fly ash.