Steelmakers report major advances with REBOX® “flameless” combustion and oxyfuel technology from Linde

  Steelmakers report major advances with REBOX® “flameless” combustion and
  oxyfuel technology from Linde

AISTech 2013, Booth 219

Business Wire

MURRAY HILL & NEW PROVIDENCE, N.J. -- March 25, 2013

Two U.S. steelmakers will report double-digit increases in production capacity
with “flameless” combustion and other oxyfuel technology from Linde North
America at the AISTech 2013 Conference at the David L. Lawrence Exposition
Center in Pittsburgh, Pennsylvania, May 6-9.

“Operational improvements driven by oxygen-assisted steel reheating
technologies are the main theme at AISTech 2013 because of the potential
economic and environmental payback,” says Tony Palermo, metallurgy industry
program manager for Linde North America. Some solutions, such as REBOX® HLL
for rolling mills, require only a minimal investment, and solutions can be
installed to existing reheating furnaces sometimes only requiring a one-day
outage.

Co-presentations with Linde are slated for Wednesday afternoon, May 8:

  *At 2 p.m. in the Energy and Utilities Committee session titled
    “Regenerative vs. Oxyfuel Retrofits on Reheat Furnaces,” EVRAZ Claymont
    Steel will report details of a 50 percent reduction in specific fuel
    consumption and 30 percent production increase capability achieved with
    Linde technology by a REBOX® oxyfuel conversion in a pusher reheat
    furnace.
  *At 3 p.m. in the Pipe and Tube Committee session titled “Seamless Pipe,”
    Michigan Seamless Tube (MST) will report how they reduced fuel consumption
    by 60 percent and greatly improved reheating capacity and eliminated
    preheating with a REBOX technical solution for their rotary hearth furnace
    using Linde flameless oxyfuel technology.

Scheduled to present for EVRAZ Claymont Steel (Claymont, Delaware) are Rolling
Mill Operations Manager Bill Taylor and Rolling Mill Superintendent Ed Gee.
Scheduled to present for MST (South Lyon, Michigan) is Hot Mill Manager Thomas
Sleder.

During the Expo, Linde will be showcasing its REBOX^® technical solutions,
including REBOX^® DFI (direct fuel impingement) oxyfuel solutions for
continuous annealing furnaces, REBOX® HLL and Flameless Oxyfuel for new and
existing steel reheating furnaces, and OXYGON^® flameless oxyfuel technology
for ladle preheating and drying.

Linde has been a pioneer in oxyfuel solutions since the 1990s and has
performed more than 130 installations around the globe. Interest in “flameless
combustion” technology from Linde (also known as ”REBOX flameless oxyfuel”)
seemed to ignite, Palermo says, after ArcelorMittal Shelby (Ohio, USA)
reported at AISTech 2008 a 25 percent increase in reheating throughput and a
50 percent reduction in fuel consumption -- and then won the AIST Energy
Achievement Award for this project in 2010.

“The presentation on the REBOX project by ArcelorMittal Shelby was also on the
last afternoon of the AISTech show,” he says. Like the MST paper this year, it
related to the production of seamless steel tubular products, now in high
demand to satisfy the burgeoning recovery and transmission of oil and natural
gas in the U.S., including shale gas and oil recovery. According to the U.S.
Energy Information Administration, from 2008 to 2011, U.S. crude oil
production jumped by 14 percent and natural gas by 10 percent (1)

Flameless oxyfuel solutions

In “flameless combustion,” both energy efficiency and more uniform heating are
achieved. Linde offers several flameless oxygen-assisted heating solutions for
different types of furnaces in its REBOX portfolio.

With REBOX® HLL (High-Level Lancing) a portion of the air needed for
combustion is replaced by industrial grade oxygen. Special lances are added to
existing sidewall or roof-mounted burners to establish a flameless-like
combustion inside the steel reheating furnace. This leads to more uniform
heating, reduced NOx emissions, reduced energy use and increased
production/heating.

With REBOX® DFI controlled oxyfuel flames are fired directly onto moving strip
steel in large-scale continuous annealing furnaces which dramatically improves
heat transfer. ThyssenKrupp Steel has incorporated the Linde REBOX DFI oxyfuel
technology on two continuous hot dip coating lines and has realized up to a 30
percent capacity increase and enhanced removal of residue from prior rolling
operations.

The REBOX portfolio includes equipment and control systems for
oxygen-enrichment, oxygen-lancing, oxyfuel-boosting and 100 percent oxyfuel
operation in reheat furnaces and annealing lines. Linde develops and produces
powerful, compact and rugged oxyfuel burners needed to retrofit in existing
furnaces.

Linde’s new OXYGON® 400 brings oxyfuel technology to a smaller scale for
efficiently pre-heating smaller refractory-lined vessels such as ladles.
Linde’s flameless oxyfuel technology allows for fuel savings up to 55 percent
compared to air-fuel, and a 25 percent shorter heating cycle. The compact
oxyfuel burner system is easy to install on any preheating vessel. In addition
to promoting more uniform heating, flameless oxyfuel effectively lowers CO[2]
and NO[X] emissions.

For more information, visit Linde at AISTech booth 219, or contact Linde North
America (www.lindemetallurgy.com), 800-755-9277.

About MST

MST (www.mstube.com) is a global manufacturing force, providing cold-drawn
carbon, alloy and high chrome mechanical and pressure tubing and piping for
many industries. The company’s seamless tube and pipe manufacturing facility
has operated continuously since 1927, and now spans 320,000 sq. ft.

About EVRAZ

EVRAZ North America is a wholly owned subsidiary of EVRAZ, one of the largest
vertically integrated steel and mining businesses in the world. The company
produces more than five million tons annually of flat, long and tubular steel
products for major markets including infrastructure, defense, energy and rail.
Operations include 16 manufacturing plants at facilities in Portland, Ore.;
Regina, Saskatchewan; Pueblo, Colo.; Claymont, Del.; Calgary, Camrose and Red
Deer, Alberta; and Surrey, British Columbia. The company also owns 18
recycling facilities and is the number one producer of large diameter pipe,
the second largest producer of steel plate and the largest producer of rail in
North America.

About Linde in North America

Linde North America is a member of The Linde Group, a world-leading gases and
engineering company with around 62,000 employees in more than 100 countries
worldwide. In the 2012 financial year, Linde generated revenue of EUR 15. 280
bn (USD 19.9 bn). The strategy of the Group is geared towards long-term
profitable growth and focuses on the expansion of its international business
with forward-looking products and services. Linde acts responsibly towards its
shareholders, business partners, employees, society and the environment – in
every one of its business areas, regions and locations across the globe. The
Group is committed to technologies and products that unite the goals of
customer value and sustainable development.

For more information, visit Linde North America online at
http://www.lindeus.com.

Reference:

(1) “U.S. to Become Biggest Oil Producer – EIA,” CNN.com, November 11, 2012

http://money.cnn.com/2012/11/12/news/economy/us-oil-production-energy/index.html

U.S. Energy Information Administration (EIA)

(LNA-3100)

® REBOX and OXYGON are the trademarks of The Linde Group.

Contact:

Linde
Amy Ficon
Corporate Communications
908-771-1491, Fax 908-771-1460
amy.ficon@linde.com
 
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