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ｕｐｄａｔｅ date ：2023-07-25 05:21:05Number of views： author：锦强设备
With the continuous development of urbanization, the demand for electricity continues to increase, and power plants also increase accordingly. However, the construction and operation of power plants have also brought a series of environmental issues, one of which is the issue of slag treatment. Slag is the solid waste generated by the combustion of coal or other fuels in power plants. If left untreated, it can cause great harm to the environment. This article will introduce the specific steps and methods of slag treatment in the central city power plant.
1、 Classification of slag
The slag can be divided into various types according to its source and nature, such as coal burning slag, domestic Incineration slag, steel smelting slag, etc. Different types of slag treatment methods also differ, so it is necessary to classify them before proceeding with slag treatment.
II. Treatment method of slag
1. Stacking method
Stacking method is a simple method of slag treatment, which involves stacking the slag on a designated site, gradually drying it through natural weathering and water evaporation, and then burying or recycling it. This method is suitable for dry slag, but it has a long storage time and a large footprint, which can easily cause secondary pollution.
2. Crushing method
The crushing method is to crush the slag through mechanical equipment, turning it into smaller particles, and then landfill or recycle it. This method is suitable for dry slag and can effectively reduce the floor area, but the cost of crushing equipment is relatively high.
3. Water quenching method
The water quenching method is to cool the slag through water quenching, quickly cooling it and turning it into granules, and then landfill or recycle it. This method is suitable for high-temperature slag and can effectively reduce secondary pollution, but it requires a large amount of water and can cause waste of water resources.
4. Magnetic separation method
The magnetic separation method is to separate the slag through magnetic separation equipment, recycle the metal substances in it, and then landfill or recycle the remaining slag. This method is suitable for slag containing a lot of metal substances, which can effectively reduce resource waste, but the equipment cost is high.
3、 Practice of slag treatment in Zhongcheng Power Plant
The Central City Power Plant adopts the water quenching method to treat the slag. The specific steps are as follows:
1. Collection of slag
After the slag is generated in the boiler of the power plant, it is collected to the designated site through conveying equipment.
2. Water quenching of slag
Spray water onto the slag to quickly cool and become granular.
3. Separation of slag
By using screening equipment, the slag is sorted and the metal substances inside are recycled.
4. Landfill of slag
Landfill the unrecycled slag and pay attention to selecting a suitable landfill site to prevent pollution to the surrounding environment.
The central city power plant uses water quenching method to treat slag, which can effectively reduce secondary pollution, but requires a large amount of water. When dealing with slag, it is necessary to classify it and choose appropriate treatment methods. At the same time, attention should also be paid to the treatment of wastewater and exhaust gas generated during the slag treatment process to protect the environment.Central City Power Plant Slag Treatment