This article explores the excellent dust removal efficiency of バッグフィルター in waste incineration power plants, with a dust removal efficiency of over 99.8%, and even up to 99.99%. However, there are still many problems in the actual operation and management process. Therefore, this article analyzes the common problems in the operation of bag filters in garbage incineration power plants and proposes corresponding solutions.
I. Frequently Asked Questions
1.Excessive running resistance
It is normal for the resistance of a bag filter to increase during operation. If the resistance is in a moderately high state, operators often overlook this issue. However, in reality, the increase in resistance will increase energy consumption and pose a threat to the service life of the filter bag. Long term operation in this state not only shortens the lifespan of the filter bag, but also poses a threat to the air supply equipment and system
When the resistance exceeds the standard severely, it may cause damage to the filter bag, making the dust removal system unable to work properly, thereby increasing operating costs and reducing economic benefits. Common reasons for high running resistance include:
- The designed filtering wind speed is too high
- Improper selection of filter material
- Dealing with insufficient air volume
- Production increase after technological transformation
Although bag filters have high dust removal efficiency, their large-scale application in waste incineration power plants is limited due to their high operating resistance and high maintenance costs.
2.Short service life of filter bag
The service life of filter bags is often short and requires frequent replacement, which has a negative impact on the economic benefits of waste incineration power generation. Some filter bags have a service life of up to 30000 hours, while others can only be used for 8000 hours or even shorter. The factors that shorten the lifespan of filter bags include:
- The quality of the filter material does not match the requirements of the working conditions
- The filtering wind speed is too high
3.Difficulty in clearing dust from the dust board
Dust agglomeration on the surface of filter bags is a common problem in waste incineration power plants. The occurrence of this problem is related to improper control of flue gas temperature and the special composition of flue gas after incineration.
4.Ash conveying equipment malfunction
バグハウスの集塵システムには、バケットエレベーターとスクリューコンベアがあるが、どちらも灰の詰まりが頻繁に発生する。
II. Cause analysis
Low utilization rate of filtration area
The amount of fly ash carried by the flue gas passing through the bag filter is relatively small, and most of the fly ash settles at the lower part of the filter bag, resulting in insufficient utilization of the actual filtration area and severe wear of the filter bag.
Insufficient automation control
Automated control systems are often not comprehensive enough. The sensitivity of the temperature sensor is poor, resulting in a deviation between the displayed temperature and the actual flue gas temperature, causing operators to make misjudgments.
III.ソリューション
A. Optimize the dust cleaning method
The commonly used cleaning methods for bag filters include back blowing cleaning, vibration cleaning, and pulse cleaning. It is recommended to adopt a partitioned design structure for easy maintenance and without affecting the operation of the incinerator.
B.Reasonable selection of filter media
Filter materials should be selected based on the characteristics of the flue gas, taking into account factors such as temperature, humidity, corrosiveness, and dust concentration.
C. Monitor the acid dew point of flue gas
When the flue gas temperature is below a certain value, acidic substances may corrode the equipment and form a sticky dust layer on the surface of the filter material. Protective measures such as ash hopper heating can be taken to alleviate this problem.
D. Maintain the ash conveying system
For equipment such as スクリューコンベア そして バケットエレベーター, it is necessary to regularly check the moisture content of the ash material. Properly increasing the speed of the conveyor can also help reduce the problem of ash blockage.
Improve the automation control system
By combining remote monitoring with manual inspection, comprehensive monitoring can be achieved to enhance the level of automation control.
結論
Through the analysis of the problems and solutions of bag filters in waste incineration power plants, it can be seen that selecting and optimizing the dust removal system correctly is of great significance for improving economic benefits and environmental protection. If you have any questions or needs regarding bag filters and related technologies, please feel free to お問い合わせ at any time. We will be dedicated to providing you with high-quality service.
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