OE OXYGEN ENRICHED BURNER Highly Efficient, Low NOx Emission and Robust Designed Industrial Burners mildflame® OE OXYGEN ENRICHED BURNER

YETEN provides complete solutions for the needs of industry about combustion and heating processes since 1987. Since then, it focused and gained much experiences on highly efficient, low emission and robust design burner systems for industrial furnaces. YETEN company uses computational tools in reseach&development and in design. These tools are CFD (computational fluid dynamics ) softwares and 2D, 3D CAD systems. The burner improvement and performance tests have been made in our own test furnace in R&D department. YETEN is ISO 9001:2000 quality management system certified company. We offer research, development, desing, installation and other services under ISO 9001 guarantee. NFPA, EN 746-2 safety standards are also adapted in our projects. Yeten exports its burners all around the world especially industrialized countries. The leading manufacturers of the related sectors inland are also our references.   NFPA EN TS-EN

OE OXYGEN ENRICHED BURNER mildflame® OE OXYGEN ENRICHED BURNER Description: Unfortunately, much more improvements in industry are resulted in reduction of fuel sources and environmental pollution. To prevent these negative conditions, some different methods are used. One of these methods is to use oxygen enrichment in combustion systems. Mildflame® Oxygen Enriched Burner’s design is based on flameless combustion technology. Gas and air are mixed in the burner block to supply pre – firing below 850 °C. Above 850 °C furnace temperature , flameless operation is achieved by means of air flow manipulation using the switch valve at air inlet and continues to burn with oxygen supplementation.Air nozzle velocity increases in flameless combustion mode and the flame temperature decreases due to the recirculation of combustion products into the reaction zone.

OE OXYGEN ENRICHED BURNER mildflame® OE OXYGEN ENRICHED BURNER Features: * Fuel: Natural gas * 29 % oxygen enrichment *Working with low excess air ( Oxygen up to 0.5 % , with very low carbon monoxide emissions(<10 ppm) * Low NOx Emission * Preheated air operation up to 500°C * Capacities: 550 – 850 – 1350 – 1900 – 2500 – 3300 KW * Low flame temperature Applications: * Reheating furnaces * Aluminium , copper and mine melting furnaces * Glass and frit melting furnaces * High temperature applications where combustion air is preheated

OE OXYGEN ENRICHED BURNER mildflame® OE OXYGEN ENRICHED BURNER INNOVATIVE DESIGN: Mildflame® OE Oxygen Enriched Burner provides increase in efficiency.It corresponds the EU ’s emission values. Mildflame® OE Oxygen Enriched Burner has been optimized cooperation with - Gas und Wärme Institut - Essen. Design and optimization have been made on Ansys – Fluent software , experimental tests have been made on our A.T Test furnace in our R&D facility.

A.T. BURNER TEST FURNACE RECUPERATOR WATCHING PANELS WATER COOLING TOWER OXYGEN MEASURING AND CONTROL SYSTEM REFRACTOR CHIMNEY DAMPER COOLING WATER PIPES COOLING WATER SYSTEM FAN

OE OXYGEN ENRICHED BURNER mildflame® OE OXYGEN ENRICHED BURNER BENEFITS : Dual mode option (Without oxygen , it can still work in flameless mode.) Approx. 25 % fuel saving and 15 % capacity increasing (**) Low flame temperature, high refractor life Working with low air excess ratio ( oxygen under 0,5 % ) Low Nox Emission Reduction in scale and dross formations Uniform temperature distribution Increasing in quality of products and furnace efficiency (** Depends on furnace characteristics and working conditions.)

OE OXYGEN ENRICHED BURNER mildflame® OE OXYGEN ENRICHED BURNER BENEFITS : FUEL SAVINGS mildflame burner operates on 5 % and lower excess air. Complete combustion is offered up to 2 % excess air with low CO emissions (<10 ppm). Significant energy saving is achieved by complete combustion under low excess air conditions. Excess Air 2 % ( 0.4 % O2) 5 % ( 1.1 % O2) 10 % ( 2.1 % O2) 15 % ( 3.2 % O2) Available Heat (450oC Comb. Air Temperature) 54.3 % 53.5 % 52.2 % 50.9 % Energy (Fuel) Savings 6.3 % 4.9 % 2.5 % 0 % T [°C]

OE OXYGEN ENRICHED BURNER mildflame® OE OXYGEN ENRICHED BURNER BENEFITS : FUEL SAVINGS 100 80 60 O2 Oxidation Rate - % Combustion Efficiency % 100 40 50 35 29 21 20 200 400 600 800 1000 1200 1400 Preheated Combustion Air °C

OE OXYGEN ENRICHED BURNER mildflame® OE OXYGEN ENRICHED BURNER BENEFITS : REDUCTION IN SCALE LOSS In iron & steel industry , oxide formation (scale) composed during the hot working causes serious material losses.Making the combustion process with low air excess ratio , can reduce the scale formation.Reduction of oxygen from 2.2 % to 1,1 % and reduction of scale formation from 1 % to 0,7 % cause 2.4 % fuel saving. Air Excess Ratio 5% (1.1% O2) 10% (2.1% O2) 15% (3.2% O2) 20% (4.2% O2) 25% (5.3% O2) Scale (%) 0.7 0.9 1.15 1.35 1.5

OE OXYGEN ENRICHED BURNER mildflame® OE OXYGEN ENRICHED BURNER BENEFITS : TEMPERATURE UNIFORMITY 0,0 0,5 1,0 1,5 2,0 500 1000 1500 2000 2500 3000 Adiabatic Flame Temperature Oxydation Ratio[-] Fuel :Methan T O 2 = 25 °C vol.-% 21 29 35 100 Max. Flame Temp.:: 1900 oC Buffer Burner (Staged Combustion) Max. Flame Temp.:: 1450 oC mildflame ® OE flameless combustion with Gas + Air Max. Flame Temp.:: 1750 oC Theoritically , flame temperature of the %29 oxygen enriched combustion is 2250 °C , by using Mildflame® OE Oxygen Enriched Burner this temperature reduced to 1750 °C . mildflame ® OE Oxygen Enriche Burner – Flameless Comb. T [°C]

OE OXYGEN ENRICHED BURNER mildflame® OE OXYGEN ENRICHED BURNER BENEFITS : REDUCING OF NOx ( NITROGEN OXIDE) AIR + GAS OPERATION 900 950 1000 1050 1100 1150 1200 1250 1300 1350 1400 20 40 60 80 100 120 140 CO-Emission [ppm] ( 5 % O 2 Dry) Q = 550 kW T Hava = 450 °C l = 1,1 NO X -Emission Staged Combustion MILD Combustion CO-Emission x - Emission [ppm] (5 % O Furnace temperature[°C] 4 6 8 10 12 14

OE OXYGEN ENRICHED BURNER mildflame® OE OXYGEN ENRICHED BURNER BENEFITS : REDUCING OF NOx ( NITROGEN OXIDE) AIR + GAS OPERATION + 29 % OXYGEN

DIMENSIONS * Combustion Air Temperature 450°C

OE OXYGEN ENRICHED BURNER mildflame® OE OXYGEN ENRICHED BURNER AIR + GAS + 29 % OXYGEN OPERATION Burner Capacity: 600 KW Oxygen Rate: 29 % Measured Oxygen (O2): 0,49 % Measured Carbon Monoxide(CO): 0 ppm Furnace Temperature: 1317 °C Furnace Internal Pressure: 15 Pascal Click on the picture to watch the video AIR + GAS OPERATION Burner Capacity: 550 KW Oxygen Rate: 221 % Measured Oxygen (O2): 0,3 % Measured Carbon Monoxide(CO): 9 ppm Furnace Temperature: 1200°C Furnace Internal Pressure: 60 Pascal

PRODUCTS * ULTRA LOW NOx – FLAMELESS BURNERS * OXYGEN ENRICHED BURNERS * GAS , FUEL – OIL AND COMBINED BURNERS * GAS , AIR , OXYGEN AND FUEL OIL MEASURING – CONTROL EQUIPMENTS AND CLASSIFICATIONS * INSTRUMENTATION & AUTOMATION

GLASS & FRIT MELTING FURNACES ALUMINIUM MELTING FURNACES APPLICATIONS *Reheat furnaces, *Aluminum, copper, glass, mine melting furnaces, *High temperature applications where combustion air is preheated, *Retrofit for existing furnaces.   GLASS & FRIT MELTING FURNACES ALUMINIUM MELTING FURNACES DROSS MELTING FURNACES REHEATING FURNACES LADLE HEATING

CONTACT US: You could contact us via marketing@yeten.com to get more information and quotation about our products. You could also visit our renewed websites to learn more about our newest products and applications. www.mildflame.com.tr (Combustion Systems) / www.yeten.com (Process Instruments)