What Should Be Noted When Using PPS Filter Bags in Coal-Fired Boilers?

1. Temperature Control
   The operating temperature of filter bags affects their lifespan. Excessively high temperatures can burn or shorten the life of filter bags. Select filter bags suitable for the dust collector’s operating temperature to ensure optimal performance.
2. Filtration Velocity Management
   Overly high filtration velocity in coal-fired boiler dust collectors is a primary cause of PPS bag damage. Some units prioritize cost reduction by increasing filtration velocity during design, which seemingly saves costs short-term but drastically reduces filter bag lifespan. This ultimately leads to higher long-term expenses and wasted time.
3. Chemical Corrosion Resistance
   PPS bags primarily capture dust in dust collectors. In acidic or alkaline environments, choose corrosion-resistant filter bags (standard PPS may corrode in harsh media, requiring specialized materials).
4. Proper Selection and Quality Assurance

• Match Temperature Requirements: Ensure filter bags operate within their designed temperature range. Exceeding limits causes burnout; subpar quality bags (e.g., from manufacturers prioritizing quantity over quality, using substandard materials) often tear, fall off, or split, damaging dust collection systems.

• Avoid Low-Quality Bags: Cheap, poorly made bags may seem cost-effective initially but fail quickly, leading to financial losses and downtime.

Summary

• Technical terms (e.g.,  → filtration velocity,  → filter bag) are retained for accuracy.

• Emphasis on cost-benefit tradeoffs (short-term savings vs. long-term losses) is highlighted to reflect the article’s warning.

• Structural clarity is maintained, grouping precautions by theme (temperature, velocity, corrosion, quality) for readability.