Luft Filter Products

Reverse Air Filter Bags (RABH): Reliable Filtration Under Challenging Conditions

At Luft Filtre, we provide specialized solutions for processes that operate at high temperatures and require precise filtration, using filter bags equipped with Reverse Air (RA) cleaning systems. Our RABH filter bags, designed with glass fiber-based fabrics coated with PTFE membranes, deliver optimal performance in terms of long service life, low differential pressure, and emission control.

Structure and Working Principle of RABH Filter Bags

In reverse air systems, dirty air flows from the inside of the filter bag to the outside, causing dust to accumulate on the inner surface of the bag. Filter bags are typically secured with a spring-loaded or J-bolt suspension system at the top, while the bottom end is tightly sealed to a plate. During the cleaning process, the airflow is reversed, and low-pressure air inflates the filter bag to dislodge the dust collected on the inner surface.

To prevent the bag from collapsing and deforming during cleaning, anti-collapse rings are sewn at regular intervals on the outside. Cleaning is usually performed compartment by compartment, offline, which helps maintain continuous filtration.

Why Choose Glass Fiber RABH Filter Bags?

For dust collection systems operating at high temperatures, glass fiber-based filter bags offer one of the most efficient solutions in terms of both performance and cost. This material stands out not only for its high heat resistance but also for its excellent mechanical strength and corrosion resistance.

Enhanced with chemical treatments and special surface coatings, glass fiber filter bags provide safe and long-lasting filtration — not just through their durability, but also with easy-to-clean properties, water repellency, and antistatic performance.

For businesses seeking long-term, stable performance under challenging process conditions across various industries, glass fiber RABH filter bags are a smart and reliable choice.

Applications of RABH Filter Bags

Organosilicon Industry:
In organosilicon-based production processes, which play a key role in renewable energy and advanced technology sectors, high temperatures and precise filtration are essential. RABH filter bags provide efficient and stable dust collection performance in the production of materials used in applications ranging from solar panel cells to lithium battery separators and supercapacitors.

Carbon Black Production:
Carbon black production poses significant challenges for filtration systems due to fine particle size and high stickiness. When combined with high vapor content, these particles tend to adhere to the bag surface, increasing the risk of clogging. Glass fiber RABH filter bags, capable of operating at temperatures of 270–280 °C, efficiently capture particles under these harsh conditions, maintaining filtration stability.

Iron and Steel Industry:
In steel production facilities, dust collection systems are used at multiple points such as blast furnaces, coke batteries, converters, and lime kilns. For the high-temperature, abrasive, and dust-laden gas environments in these areas, glass fiber RABH filter bags offer a long-lasting, high-performance filtration solution.