It is designed as a strip-shaped closed coal yard or a circular closed coal yard, and adopts a fully enclosed environmental protection coal storage shed. Can complete the optimization design of construction drawing grid, material manufacturing, processing and supply, site installation and construction, etc.
The ventilation design and evaluation system of fully enclosed coal bunker can be used to design the ventilation of fully enclosed coal bunker. According to the working conditions of coal bunker, the ventilation of coal bunker is designed and evaluated, and a perfect ventilation scheme is given. Air curtain ventilation belt can also be used to ensure good ventilation and realize zero dust overflow.
Extended data:
To do a good job in ventilation of fully enclosed coal bunker, the wind environment behind fully enclosed coal bunker should generally be determined according to the dominant wind direction, wind speed and plane layout position of coal bunker.
It is necessary to establish ventilation systems at the upper, middle, lower and both ends of the coal bunker, and calculate the size of each ventilation area and the structural form of ventilation parts to prevent coal dust from overflowing during ventilation. Good ventilation can greatly improve the working environment in the fully enclosed coal bunker, reduce the risk of dust explosion and the occupational health and safety of workers by more than 70%.
In order to ensure the safe operation of the power plant, the power plant has a coal storage yard. A certain amount of coal can be stored to prevent the interruption of fuel transportation from affecting power production. At the same time, the imbalance between external coal quantity and boiler fuel quantity can be adjusted. Sometimes, the coal yard can also be used for natural drying of mixed coal and high moisture coal.
The overall layout of different power plants is different, and the types of coal storage yards are also different, such as round, strip and fan. Most power plants use strip coal storage yards, and a few power plants use circular or fan coal storage yards.
The problem that must be considered in the process of lump coal stacking is how to prevent the secondary crushing of lump coal. The commonly used storage methods are cylindrical silo, square silo and inverted conical silo. When using cylinders to store lump coal, it is necessary to lay spiral chutes on the inner wall of the silo, so that the lump coal will fall into the silo along the spiral chutes, so as to reduce the height of falling coal and reduce the fragmentation of lump coal.
When storing lump coal in a square warehouse, one side of the square warehouse is usually made into an inclined concrete warehouse wall, so that the lump coal falls into the square warehouse along the inclined warehouse wall, thus reducing the height of falling coal; Inverted-cone coal bunker is usually arranged underground or semi-underground, so that lump coal falls into the bunker along the inclined silo wall, which can also reduce the fragmentation of lump coal.
References:
Baidu encyclopedia-coal storage yard