“Is \"electro-reform bag\" dust removal the future development trend?
Thread Content
“An “electrostatic precipitator to bag filter converter” is a device that transforms an originally installed high-voltage electrostatic precipitator into a bag filter. That is, by using the existing casing and ash removal system, the interior is modified to a pulse bag dust collection system. Replacing the bag with an electric version can improve ventilation capacity, boost production efficiency, and reduce investment costs. I hope everyone can discuss the advantages and disadvantages of electrostatic dust removal and bag dust removal, and whether there really is a large market in switching from electrostatic to bag filtration in the future
In fact, electrostatic dust collectors have quite high efficiency; they were widely used in the past, but their operating costs are too high, and they are also difficult to manage. On the other hand, bag filter dust removal systems require relatively less investment, and they also incur lower operating costs. However, its operating costs are still relatively high compared to some other dust removal methods. Therefore, I personally think it’s not certain how large its market will really be in the future. If the problems of excessive gas temperature and corrosiveness can be resolved, cyclone dust collectors and bag dust collectors are the preferred choices.
For bag filters, the operating costs during use are mainly related to the cost of filter media and electricity consumption. Thanks to the development of new fiber and manufacturing technologies, many new types of filter media have been developed that are durable, corrosion-resistant, heat-resistant, have low pressure drop, and are easy to clean, which has improved the lifespan and reduced the failure rate of bag filters
As environmental requirements become increasingly stringent and controls on dust emission concentrations grow more strict, bag filters will undoubtedly be the mainstream solution in the future. :lol
Previously, the filter bags used in bag filters had various shortcomings, which is why electrostatic precipitators were primarily used. With advancements in materials science and fiber technology, filter bags that can meet various dust removal requirements, feature a long service life, are resistant to high temperatures, and exhibit low pressure drops have been developed. As a result, the previous shortcomings of bag filters have been significantly reduced. The key factor that will enable bag filters to replace electrostatic precipitators in the future is the increasing demands for environmental protection; electrostatic precipitators are becoming increasingly unable to meet dust removal requirements, while bag filters offer higher efficiency in removing even finer particles of dust.
Which one has higher efficiency, a bag filter or an electrostatic precipitator?
In terms of dust removal efficiency alone, bag filters are superior to electrostatic precipitators, especially in situations with high dust concentrations. It also depends on the situation, on what type of dust it is. For example, in the applications of power plants owned by chemical factories, electrostatic precipitators are primarily sensitive to the specific resistivity of fly ash; when the specific resistivity is appropriate, the efficiency of the electrostatic precipitator is also high ； Bag filters are primarily determined by the filter media chosen and the application conditions. Generally, for dust with a particle size of PM>10um, bag filters can achieve an removal efficiency of over 99.9%; in special applications, this efficiency can reach over 99.999% (with membrane bags).
The efficiency of bag filters is still higher than that of electrostatic precipitators; once the problems related to the filter bags are resolved, bag filters are undoubtedly much better!
A specific analysis of the two is required; it cannot be generalized.
I don’t think it can be said that one replaces the other. The key is to consider what occasion it is being used for. Many places are still very suitable for electrostatic dust collectors.
At least from the perspective of **energy conservation and environmental protection, which is highly emphasized these days, switching to electric bags is definitely better – and the cost is lower as less electricity is needed.**
I think the electro-bag composite dust collector is better
For the first and second electric fields, electrostatic dust removal is still used; after removing most of the dust, a bag filter is employed. The advantages of both types of dust collectors can be combined