When selecting dust removal equipment for overseas industrial factories, filter cartridges and bag filters are the two most common options, but there are significant differences in their adaptation scenarios. Choosing the right one can save 30% of operation and maintenance costs, while choosing the wrong one may result in frequent failures and excessive emissions. By comparing core parameters, industry adaptation, and foreign trade needs, we aim to assist foreign trade customers in industries such as chemical, electronics, and food in accurately selecting products, achieving "efficient compliance+cost reduction and peace of mind".
1、 Comparison of core parameters: first look at basic adaptability
The core differences between filter cartridges and bag filters are reflected in processing capacity, efficiency, maintenance, and other dimensions, which directly determine the applicable scenarios. The specific comparison is as follows:
Handling air volume
The filter cartridge dust collector is suitable for medium and low air volume (≤ 50000 m ³/h), mainly single machine models; Bag filter is suitable for high air volume (≥ 50000 m ³/h) and can be combined into a large-scale dust removal system.
dust removal efficiency
The fine powder capture rate of the filter cartridge dust collector is extremely high, with a capture rate of up to 99.9% for dust particles between 0.1-10 μ m, especially when using membrane filter materials, which has significant advantages. The dust removal efficiency of the bag filter is at a conventional level, between 98% and 99%, and it has strong adaptability to dust above 10 μ m.
Filter material lifespan
Under low to medium dust conditions, the lifespan of the filter material in the filter cartridge dust collector is 6-12 months, which is shortened to 3-6 months under high dust conditions. The lifespan of the filter material for bag filters is 12-18 months under low to medium dust conditions and 8-12 months under high temperature conditions.
maintenance cost
The filter cartridge replacement speed of the filter cartridge dust collector is fast, with a single replacement taking only 10 minutes and low labor costs; The bag filter takes a long time to change bags, about 30 minutes each, and requires a professional team to operate.
floor area
The filter cartridge dust collector is compact in size and can save 40% -60% of space compared to bag filters; The bag filter has a large volume and requires sufficient space for installation and maintenance.
heat resistance
The conventional temperature resistance of the filter cartridge dust collector is ≤ 120 ℃, and special models can withstand temperatures up to ≤ 200 ℃; The conventional temperature resistance of bag filters is ≤ 260 ℃, while special models (such as PPS filter bags) can achieve a temperature resistance of ≤ 300 ℃.
2、 Industry selection guide: Select the "right equipment" according to working conditions
The dust characteristics (particle size, concentration, temperature) of different industries vary greatly, and targeted equipment matching is needed. The following are selection suggestions for mainstream industries:
1. Electronic/laser cutting industry: prioritize filter cartridge dust collectors
Core operating conditions: fine dust particle size (0.5-5 μ m), low air volume (single machine workshop), high cleanliness requirements (to avoid dust affecting product accuracy).
Reason for adaptation: The fine powder capture rate of the filter cartridge dust collector reaches 99.9%, and its small size allows it to be installed nearby. Changing the cartridge does not require a professional team, and it is suitable for the production characteristics of "small batch, high precision" in electronic factories. It complies with the EU CE and US UL electronic industry cleanliness standards.
2. Food/pharmaceutical industry: Preferred sanitary grade filter cartridge dust collector
Core operating conditions: Dust needs to be recycled (such as flour and milk powder), high hygiene requirements (to avoid cross contamination), low dust and low humidity.
Adaptation reason: The food grade filter cartridge (compliant with FDA standards) can directly contact food dust, with a non disassembly and wash design to reduce pollution risks. Its small size is suitable for compact layout in the workshop, and it is easier to meet the hygiene audit requirements of European and American food factories than bag filters.
3. Steel/power plant industry: mandatory bag filter
Core operating conditions: high temperature (180-300 ℃), high dust (concentration ≥ 50g/m ³), high air volume (centralized dust removal in the workshop).
Reason for adaptation: The bag filter has strong temperature resistance (PPS filter bag can withstand 260 ℃) and can be combined into a high air volume system. The filter bag has a lifespan of 8-12 months under high temperature and high dust conditions, which is more resistant to harsh working conditions than the filter cartridge and can stably meet the ultra-low emission standards of power plants (≤ 10mg/m ³).
4. Chemical/coating industry: Choose according to needs, focus on corrosion prevention
Core operating conditions: Dust containing acid and alkali corrosiveness, partially high humidity (such as paint dust).
Selection suggestion:
Low air volume, fine powder scenario: Choose PTFE coated filter cartridge (acid and alkali resistant), suitable for small chemical workshops;
High air volume and high humidity scenario: Choose an anti-corrosion bag filter (316L stainless steel shell+PTFE filter bag) to avoid equipment corrosion and meet the ATEX explosion-proof certification requirements of the chemical industry.
5. Furniture/Wood Industry: Both are acceptable, depending on the air volume
Core operating conditions: Medium dust particle size (10-50 μ m), containing sawdust fibers, and low to medium air volume.
Selection suggestion:
Small furniture factory (single machine equipment): choose filter cartridge dust collector, save space, and change cartridges quickly;
Large furniture factory (multiple production lines): Choose a bag filter and combine it into a centralized dust removal system to handle air flow more flexibly.
3、 Additional considerations for foreign trade selection: adaptation to regional working conditions
The differences in climate and compliance requirements in different regions overseas will affect the final selection, and two key points need to be focused on:
1. Adaptation to regional working conditions
High humidity areas in Southeast Asia: Choose equipment with dehumidification modules, and prioritize hydrophobic coated filter cartridges/bags to avoid dust agglomeration and blockage;
High temperature zone in the Middle East: PPS heat-resistant filter bags are preferred for bag dust collectors, and special models with a temperature resistance of over 150 ℃ are selected for filter cartridge dust collectors to prevent high-temperature aging of filter materials.
2. Compliance certification matching
European and American markets: Regardless of which one is chosen, it is necessary to ensure that the equipment has CE and EPA certification, and that the filter material complies with REACH regulations;
Explosion proof scenario: Both require ATEX certification, with a focus on checking the explosion-proof level of the electrical system (Exd II CT4 or above).
4、 Selection Summary: 3 Steps for Quick Judgment
1. Check the air volume and temperature: high air volume (>50000 m ³/h) or high temperature (>120 ℃) → bag filter; Low to medium air volume, room temperature → filter cartridge dust collector;
2. Check the particle size of dust: fine powder (<10 μ m) → filter cartridge dust collector; Coarse powder (>10 μ m) → Bag filter;
3. Industry Characteristics: Electronics/Food → Filter Cartridge; Steel/power plant → cloth bag; Chemical → Anti corrosion (filter cartridge/bag as needed).
For overseas factories, there is no absolute quality between filter cartridges and bag filters, only whether they are compatible. Combining the dust characteristics, production scale, and regional conditions of our own industry, and comparing with the above guidelines for selection, we can ensure that dust removal meets standards while minimizing operation and maintenance costs, making the equipment truly suitable for the "efficiency+compliance" needs of foreign trade production.