Annular groove graphite partial condensers
Annular groove graphite partial condensers are especially adapted to the condensation of highly corrosive vapors. Their specific design allows the efficient condensation of vapors containing proportionally large amounts of non-condensable. They can also be efficient gas coolers. Annular groove graphite partial condensers transfer heat from a condensing vapor to a cooling medium. Graphite discs are machined to create annular grooves on service side and series of holes on the process side. Heat is transferred by conduction through the impervious graphite left between the process and the service channels. Annular groove graphite partial condensers consist in a stack of discs that are fused together.
Snapshots
Details of a tiny graphite partial condenser before assembly
GAB Neumann’s graphite partial condensers consist in series of concentric annular grooves on service side and series of holes on process side that are respectively machined and drilled in graphite discs
Large graphite partial condenser with carbon fiber reinforcement
GAB Neumann’s graphite partial condensers are extra efficient for the condensation of inert gas containing vapors
Small graphite partial condenser before assembly
Process side of a small GAB Neumann’s graphite partial condenser before assembly
3D Renderings
Cross section of an annular groove graphite partial condenser
Annular groove graphite partial condensers consist in a stack of graphite discs that are beforehand machined to create annular grooves on service side and series on holes on the process side
Annular groove graphite partial condenser
GN5 annular groove graphite partial condenser
Annular groove graphite partial condenser discs
GN5 annular groove graphite partial condenser discs
Small annular groove graphite partial condenser
Small annular groove graphite reflux condenser above an HCl destillation column
Gas liquid separation chamber equipped with a drip plate
Gas liquid separation chamber equipped with a drip plate to prevent droplet entrainment in the vents.
3D animations
Materials:
- Impervious graphite: GAB GPX1, GPX1T or GPX2
- Pressure plates and flanges: carbon steel or stainless steel (optional)
- Tie rods, nuts, bolts, washers, springs: stainless steel
Design:
- Totally modular design: number of discs, size of discs and number of passes can be adjusted.
- Graphite discs with annular groove (spiral) on service side and holes on process side
- Maximum disc diameter: 900 mm
- Different groove widths and hotel diameters 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
- Design temperature: -60 to +200°C (-76 to 392°F)
- Heat transfer area: up to 100 m2 (up to 1076 ft2)
- Design: according to European Pressure Equipment Directive 2014/68/EU (PED) or ASME Code
Key Benefits:
- Outstanding corrosion resistance
- Superior heat transfer performance thanks to adjustable cross sections on both sides that guaranty a high level of turbulence
- Gasket free design (fused discs)
- Resin free surfaces (impregnation before machining)
- Dead zone free design
- Self-cleaning design prevents fouling and clogging
- High operational safety
- Highly reliable equipment therefore low cost of ownership and low maintenance cost
- Compact and robust design
- Short lead time
- Long lifetime
Optional features:
- Sight glass
- Carbon fiber reinforcement
- Cleaning in place
Main applications:
- Condensation of vapors containing proportionally large amounts of non-condensable
- Suited for multi and single purpose units
Technical documentation
Annular groove partial condensers
Annular groove partial condensers transfer heat from a condensing vapor to a cooling medium, generally water, brine, or ethylene glycol, without direct contact between fluids. For material properties, cost and efficiency reasons annular groove partial condensers only exist in impervious graphite.
The thermal performance of annular groove graphite partial condensers can vary significantly. It is therefore essential to select the type and size of annular groove graphite partial condensers that is the most adapted to the specific application and industrial process. There are a number of considerations including flow rate, pressure drop, design pressure and temperature, materials compatibility, fouling, and many more that should be taken in account.
GAB Neumann’s annular groove graphite partial condensers - GN/GH series
GAB Neumann’s annular groove graphite partial condensers are designed to condense ultra-corrosive vapors containing proportionally large amounts of non-condensable. Safety, reliability, and performance on the long-term are our primary considerations when we size, design and manufacture annular groove graphite partial condensers.
Our extended and highly customizable annular groove graphite partial condenser portfolio enables us to provide particularly adapted solutions to totally or partially condensable vapors. With significantly more heat transfer surface on process than on service side, GAB Neumann’s GN/GH series meets perfectly the process requirements. All our annular groove graphite partial condenser’ designs are totally modular to best fit with individual process specification. The number and size of discs, the number and diameter of holes as well as the number of passes both on process and service sides can be adapted to best meet the velocities, pressure drops, and heat transfer requirements.
They can be fitted with optional features such as sight glasses, cleaning in place and GMP design if required.
All our annular groove graphite partial condensers are machined after phenolic resin impregnation thus guarantying a heat transfer surface totally free of resin and ensuring therefore the highest possible heat transfer rate.
Industrial processes:
- Crop protection
- Fine chemicals
- Active pharmaceutical ingredients
- Fire retardants
- Flavors and fragrances
- Vitamins
- Treatment, purification and concentration of spent acids
- and many more…
GAB Neumann GmbH
Alemannenstrasse 29
79689 Maulburg
Germany
GAB Neumann GmbH | Alemannenstrasse 29 | D-79689 Maulburg | Phone +49 (7622) 6751 0 | Fax +49 (7622) 6751 20 | E-Mail info@gab-neumann.de | www.gab-neumann.com