Cement Industry

Application Introduction:
The cement industry is one of the important basic industries in China, but in its production process, it will produce a large number of dust emissions, which will pose a threat to the environment and human health. In order to solve this problem, the dust removal filter bag, as an efficient dust removal equipment, has been widely used in the cement industry. This paper will focus on the application of dust removal filter bag in the cement industry.
1、 Working principle of dust removal filter bag
Dust removal filter bag is a kind of filter element made of fiber fabric. Its working principle is to separate the dust from the air flow through interception, inertial collision, diffusion and sedimentation, so as to achieve the purpose of purifying the air. When the dusty gas passes through the dust removal filter bag, the dust is intercepted on the surface of the filter cloth, and falls into the ash hopper after natural sedimentation or rapping. The clean gas enters the air purification chamber through the dust removal filter bag, and then is discharged through the exhaust pipe.
2、 Types and characteristics of dust removal filter bag
According to material classification, the dust removal filter bag can be divided into natural fiber, chemical fiber, glass fiber and metal fiber. Among them, glass fiber and polytetrafluoroethylene fiber have high heat resistance and chemical stability, which are suitable for high temperature, high humidity and strong corrosive environment.
According to the structure classification, the dust removal filter bag can be divided into cylindrical, flat, conical and other types. Among them, the cylindrical dust removal filter bag has high filtering area and low resistance, which is the most commonly used structural form in the cement industry.
According to the classification of ash cleaning methods, the dust removal filter bag can be divided into mechanical vibration type, reverse airflow reverse blowing type, pulse injection type and acoustic ash cleaning type. Among them, mechanical vibration type and reverse air reverse blowing type dust removal filter bags are commonly used in the cement industry.
3、 Application of dust removal filter bag in cement industry
Raw mill system: raw mill is one of the important equipment in cement production, and a large amount of dust will be generated when the mill works. In order to reduce the dust emission concentration, a dust remover is usually installed at the mill outlet, and the dust is filtered by a dust removal filter bag.
Clinker burning system: clinker burning is another important link in cement production, and a large amount of flue gas and dust will be generated during the burning process. In order to ensure that the flue gas meets the emission standard, a dust collector is usually installed in front of the chimney, and the dust removal filter bag is used to filter the flue gas.
Cement mill system: cement mill is the last process of cement production, and certain dust will be generated when the mill works. In order to reduce dust emission, a dust collector is usually installed at the outlet of the mill, and the dust is filtered by a dust removal filter bag.
Packaging and bulk system: a certain amount of dust will also be generated during the packaging and bulk of cement. In order to improve the working environment and reduce dust emission, dust collectors are usually installed around the packaging machine and bulk warehouse, and dust filters are used to filter the dust.
4、 Maintenance and management of dust removal filter bag
Regular inspection: regularly inspect the dust removal filter bag, and replace or clean it in time in case of damage or blockage.
Regular dust removal: the dust remover shall be cleaned regularly according to the actual situation to ensure the dust removal effect.
Keep clean: keep the interior of the dust collector clean to avoid sundries blocking the filter bag or affecting the ventilation effect.
Record management: establish a dust collector operation record management system to monitor and manage the operation in real time.
In short, the dust removal filter bag plays an important role in the cement industry, which can effectively reduce the dust emission concentration, improve the working environment, protect the environment and human health. In the future, with the continuous improvement of environmental protection requirements and the development of technology, the application prospect of dust removal filter bag will be broader.