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GAB-Neumann - Annular Groove Isothermal Graphite Absorbers
FromGAB Neumann GmbH
Annular groove isothermal graphite absorbers are graphite heat exchangers adapted to the absorption of ultra-corrosive gases such as hydrochloric, bromhydric or hydrofluoric acids. The equipment works as a number of water cooled-wall tiny columns in parallel. Each tiny column is provided with a liquid distribution system on top to ensure the uniform distribution of both liquid and gas and also form a thin liquid film at the surface of the column.
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Materials:
- Impervious graphite: GAB GPX1, GPX1T or GPX2
- Pressure plates and flanges: carbon steel or stainless steel
- Tie rods, nuts, bolts, washers, springs: stainless steel
Design:
- Totally modular design: number of discs and size of discs can be adjusted.
- Maximum disc diameter: 900 mm
- Impervious graphite discs with straight flow channels on process side and annular grooves on service side.
- Different channel widths possible
- Graphite nozzles on product and utility sides
- Thermal expansion compensation ensured by tie rods and helical springs
- Carbon-fiber reinforcement (optional)
Key Features:
- Design pressure: -1 barg (full vacuum) to +10 barg (145 psig)
- Design temperature: -60 to +200°C (-76 to 392°F)
- Heat transfer area: up to 55 m2 (592 ft2)
- Design: according to European PED, ASME code, Chinese Pressure Vessel code and other national pressure vessel codes on request
Optional features:
- Carbon fiber reinforcement
- Sight glass
- Outstanding corrosion resistance
- Superior heat transfer performance
- Large liquid-vapor interfacial area and good wetting characteristics
- Perfectly adapted liquid distribution design as well as unique design made of offset annular slots guarantees the most intimate contact between the gas and absorption liquid
- Straight flow channels for low pressure drop
- Liquid distribution plates with overflow candles to ensure homogenous liquid distribution
- Cross section adapted to progressively decreasing gas volume
- Annular groove channels on service side for optimum heat transfer
- Impregnation before machining ensures resin free surfaces
- High operational safety
- Sturdy and modular design
- Short lead time
- Long lifetime
- Isothermal absorption of ultra-corrosive gases
- Hydrochloric acid recovery