DENOX
Emission reduction systems for glass production plants
We apply advanced technologies to reduce pollutants generated in the glass production process. We design and supply optimized Denox systems thanks to our expertise and the partnership with Tecsiglass.
The combustion of natural gas leads to the formation of nitrogen oxides (NOx), which must be treated in order to comply with current environmental regulations. We use Selective Catalytic Reduction (SCR) technology, injecting a reactant into the exhaust gases, which reacts over ceramic catalyst modules to convert NOx into nitrogen and water. Each system is custom-designed for every glass plant, using advanced technologies and tailored engineering solutions.
Plant description
The Denox system has two main sections:
EXHAUST GAS SECTION
• The Denox reactor is made of S355J0WP carbon steel with outstanding corrosion protection and high
temperature resistance.
• Exhaust gas pipes and conducts, to connect the reactor in the tail end of the glass oven, after the
electrostatic fi lter, or in separated installation in the tail of every oven.
• Exhaust gas bypass system allow running the glass process without relying on the emergency chimney
during regular Denox maintenance thanks to heavy duty pneumatic valve connected to the control
system.
• Soot blower system based on timed injection of compressed air.
Process section
• Reactant solution storage with unloading station equipped with safety systems for a safe and environmentally responsible management of all the plant operations.
• Injection module based on redundant booster pumps, control valve with linear response driven by electronic positioner.
• Urea / ammonia lance engineered with spot or matrix pattern, made of 316L stainless steel, optimized through FEM and flow dynamics analysis based on the actual plant layout and performance request.
• Process and control instrumentation.
• Laser refraction type, nitrogen, oxygen and NH3 slip emissions analyzer to be installed into an existing SME system or as a standalone system.
Honeycomb SCR modules
The emission reduction is achieved through a catalysis reaction that take place in the surface of the SCR modules.
The so called “honeycomb” structure gives a very high contact surface per volume, so the ammonia vaporized with the exhaust can fully react with the catalyzer.
The SCR modules, easily installed and maintained, are fabricated by depositing the catalyst substances on a ceramic based substrate resistant at the high working temperature.
The design, engineering and production of the SCR module is fully managed in european production factory by Emission Partner.