ABB Sells Drying
Business to Andritz
The following
is from a press release on ABB's web site:
ABB sells drying
business Sale is part of strategy to focus on power and automation
technologies Zurich, Switzerland, Oct. 29, 2002 –
ABB, the leading
power and automation technology group, said today it has sold its
pulp and paper drying business to Andritz AG in Graz,
Austria. “Delivering pulp and paper drying systems is core for
process line suppliers such as Andritz, but no longer core for ABB.
The
Andritz Dryer
The Andritz dryer is a
unique in-drum radiant heater system that increases drying capacity
by increasing the surface temperature of a drying drum/can over what
is possible with a steam system. The gas fired drum is a direct replacement
for an existing steam drum and provides drying via direct contact
with the hot surface of the drum.
Features
and Benefits
- Radiant Burner inside
cylinder acts as Heat Source
- Cylinder No Longer
a Pressure Vessel - ASME Coding not required
- Steam Cylinder Surface
Temperature is about 280° F
- Gas Heated Surface
Temperature up to 570° F
- Dryer Efficiency: 50%+
- Overall Efficiency:
85-90%
- Very Low Emissions
- High Drying Rates due
to High Surface Temperature
- Increased Drying Capacity
for Drying Limited Machine
- Excellent Solution
for Space Limited Machines
- Application for Steam
Limited Mills
- One Cylinder = 3 to
5 Steam Cans
- No Change in Dryer
Section Configuration
- Avoids Extending Building
or Moving of Finishing End
- Short Down Time for
Installation (2 to 3 days)
- For New Paper Machines:
- reduced dryer section
length
- shorter building
- smaller boiler
- lower overall cost
Installation
Basics
The Andritz GHPD (Gas Heated
Paper Dryer) is a one-for-one replacement system with existing steam
cylinders. They are installed in pairs to produce an even drying effect
on both sides of the paper. Production increases have many variables,
but 5 - 15% line speed increase per pair of GHPDs installed is typical.
Exhaust heat from the IR burners can be captured for use in heating
pocket ventilator air for additional efficiency improvements.
For
More Information
Andritz GHPD were installed
at Corrugated Services LP (CSLP),
located in Forney, Texas. Click here to see the Case Study.
To view a presentation
on the Andritz GHPD
in PDF format. This presentation, made by Dave Gamble of Andritz,
was made to the Energy Solutions Center in February 2003. It includes
some case study information in addition to the CSLP study linked above.
Source: Graphic
and Features and Benefits from Aqeel Zaidi Union Gas IGT CIGC July
2000 Presentation; Andritz GHPD presentation to the ESC 2/2003.
