Installation, Operation, and Maintenance
VWR Zero Air Generator
Introduction
VWR Corporation produces a zero air generator designed to remove
hydrocarbons from a supply of compressed air.
The VWR zero air generator is capable of purifying an input source of air to
produce a zero-grade, hydrocarbon free output. The Model 26000-022 generator
can produce 3500 cc/min (0.124 ft
3
/min) at 690 kPa (100 psig) and the Model
26000-020 can produce 1000 cc/min (0.035 ft
3
/min) at 690 kPa (100 psig). Each
system is capable of producing an output gas that has a total hydrocarbon
content (THC) of less than 0.1 parts per million as methane. With this level of
purity, you can replace the high pressure gas cylinders rated as zero-grade or
ultra-zero-grade air that you may currently be using.
The system consists of three different functional areas to produce the purity level
required. The inlet filter is a 0.01 micron coalescing filter that removes particles,
oil and water that may be present in the inlet compressed air source.
Hydrocarbons are removed when the compressed air is passed through a
converter containing a heated catalyst. After cooling, a 0.01 final filter is used to
remove any residual particulate material.
1
Bulletin TI-ZAG3500-L1466
