Data sheet DeNOx Gas injector - STG Cottbus
Data sheet DeNOx Gas injector - STG Cottbus
Data sheet DeNOx Gas injector - STG Cottbus
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<strong>DeNOx</strong> FreeJet <strong>Gas</strong> Injector<br />
Technical <strong>Data</strong><br />
Fuel: Natural gas (0,3 ... 1,5 bar)<br />
Energy output: 0,2 ... 10,5 MW<br />
(20 ... 1100 Nm³/h)<br />
with 8 <strong>injector</strong> sizes<br />
Purge air: 0,3 bar<br />
Water cooling: 10 ... 20 l/min<br />
<strong>Gas</strong> connection: 1 ¼ ... 2 ½ ’’<br />
Application<br />
Underport firing for:<br />
Regenerative crossfired furnaces<br />
Regenerative fired endport furnaces<br />
Technical Concept<br />
Injection of the fuel into the furnace following the opening angle<br />
of a free gas jet<br />
Creating a low turbulent gas flow<br />
Controlled delay in flame ignition leads to a much later start<br />
of combustion<br />
Lower temperature of flame root with increase of emissivity<br />
Constant burnout and temperature gradient with low primary mixing<br />
Purge air not entering the combustion process<br />
Injector positioned flush with the inner side of the furnace chamber<br />
Injector bordered with a special burner block, designed with cylindrical<br />
opening, classical burner block will be replaced with this design<br />
Injector forms complete free gas jet by itself<br />
Natural gas with this design will have no contact with refractories<br />
Ecological and economical benefit<br />
Burner technology achieves lowest NOx emissions combined with<br />
advanced process control systems (up to 400 … 1,000 mg/Nm³ at 8 % O2 ,<br />
depending on process and construction parameters)<br />
Increase of energy efficiency<br />
Increase of melting capacity<br />
Lower crown and waste gas temperatures<br />
Lower specific energy consumption<br />
Decrease of thermal corrosion of refractories leads to increase<br />
of furnace lifetime<br />
Injector Bracket<br />
Stable, flexible <strong>injector</strong> bracket<br />
5 directions of free movement<br />
Easy installation<br />
Fast mounting and demounting
<strong>Gas</strong><br />
DeNO x <strong>Gas</strong> <strong>injector</strong> in underport position<br />
<strong>STG</strong> Combustion Control GmbH & Co KG<br />
Kiekebuscher Weg 14 · 03050 <strong>Cottbus</strong>/Deutschland<br />
Phone: +49 (0) 355 -5 90 20-0 · Telefax: +49 (0) 355 -541124<br />
E-Mail: stg@stg-cottbus.de · Internet: www.stg-cottbus.de<br />
Scope of supply<br />
DeNO x FreeJet <strong>Gas</strong> Injectors with the required capacity<br />
Injector brackets<br />
All flexible hoses as required<br />
Injectors and accessories installation and basic firing optimisation<br />
Training of customer’s staff<br />
Options<br />
Extensive firing and furnace optimization works<br />
Renting and maintenance contracts (incl. <strong>injector</strong>s cleaning,<br />
maintenance of equipment) instead of purchasing<br />
<strong>STG</strong> Lambda Control combined with <strong>STG</strong> Oxygen Sensors and<br />
<strong>STG</strong> Process Control Systems<br />
Expansion to Dual-Injector for mix firing with natural gas and heavy oil<br />
(only after specific project evaluation of technical feasibility)<br />
Cooling<br />
improved<br />
radiation
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