SAACKE energy efficiency Coke Oven Gas Renaissance of a fuel SAACKE burner systems for coke oven gas In the 19th and the first half of the 20th century coke oven gas was one of the main sources of energy for urban households. It was used for gas lamps, for heating and cooking. In many parts of the world the population was supplied with purified coke oven gas as town gas. In the 1960s coke oven gas (town gas) was replaced by natural gas as a fuel – and fell into oblivion as a source of energy in many places. SAACKE combustion technology today makes possible a reliable, low-emission and highly available utilization of this demanding fuel. Besides purely coke oven gas burners, SAACKE also offers combined burners for two-gas operation or operation in combination with liquid fuels. The following burner series have proven effective in operation with coke oven gas: However, fossil fuels like natural gas are precious and expensive and in times of climate change, reliable alternatives are in demand worldwide, particularly in industry. • SG / SKVG for all areas of application, output 1 – 55 MW • TEMINOX GS / GLS for flame tube boilers and thermal oil heaters, output 4 – 25 MW • DDG / DDZG and TF-DDG / TF-DDZG for water tube boilers, output 10 – 80 MW • SSB for combustion chambers and special applications (low gas pressure, contaminated combustion gas), output 1.5 – 90 MW Coke oven gas – from a by-product to a reliable source of energy What, therefore, is coke oven gas? Large amounts of this gas, which represents a high-quality and low-cost fuel in purified or partially purified form, result from gasification of coal or as a by-product of coal degassing at coking plants. It consists of 50 % hydrogen and approx. 25 % methane and is thus a valuable source of energy that is available near coking plants and in coal mining areas and should be exploited optimally. Coke oven gas places special demands on combustion technology, due to large volumes, low pressures, high hydrogen content and frequently high degree of contamination. In addition, SAACKE offers: • Intelligent EMSR technology • Special gas trains for coke oven gas with increased contamination, e.g. due to traces of tar or oil Depending on the configuration, systems for coke oven gas combustion can also be combined with other efficiency-enhancing measures and with alternative fuels. This makes it possible to further reduce operating costs while efficiency is increased even more. SAACKE offers tailored technical solutions to utilize energy efficiently. © SAACKE GmbH 2012 SAACKE GmbH | Head Office in Bremen: Südweststrasse 13 | 28237 Bremen | Germany | Tel.: +49 421 6495 0 | Fax: +49 421 6495 5224 International contact details: www.saacke.com | e-mail: info

The following examples impressively show how combustion of different alternative fuels can be optimally combined with intelligent EMSR technology and equipment for maximum energy efficiency: Coke oven gas firing system at a steel plant in Germany This system is run with six SAACKE TEMINOX GS Low-NOx gas burners on three 30 t/h steam double flame tube boilers. Two boilers are fired with natural gas and one solely with coke oven gas. Coke oven gas firing system at a steel plant in China The system is run with the extremely rugged SAACKE SG 150 gas burner on a 20 t/h steam boiler. Coke oven gas...