General
Filtration in the main fuel gas supply system conditioning the gas so that the requirements of the consumers are already met. The design of the filtration is dependent on the technical operating data and mainly of the contamination with solids and liquids in the gas.
Filter
The main filtration can be roughly divided into two areas: The coarse filteration (pre-separation) and the fine filter
Coarse filter (pre-separation)
Pre-separators remove larger solid particles and free liquids from the gas stream, protecting downstream fine filters and significantly extending their service life.
Typical solutions include gas scrubbers and knock-out drums, selected according to the specific gas conditions and separation requirements
Fine filter (dust and/or liquids)
Various fine filtration systems are available, ranging from simple cartridge filters to sophisticated multi-stage filter systems, depending on the gas quality and application requirements.
Filter systems can be designed in vertical or horizontal configuration, depending on the required filtration performance, operating conditions, and installation requirements.

Conclusion
The wide range of coarse and fine filtration technologies results in numerous possible filter combinations. Selecting and combining the right technologies for each application requires extensive engineering experience and a thorough understanding of gas filtration.
With more than 30 years of experience in fuel gas treatment, rotring-hische has extensive expertise in selecting, designing, and integrating filtration systems for a wide range of gas qualities and operating conditions.
