Promotion Over 3,000 of Polytechnik’s plants between 300 kW and 30 MW are currently in operation around the world. Energy generation with a future Polytechnik is one of the world’s most renowned suppliers of ventilation and combustion technology systems. The biomass specialist once again proved his expertise in the eld of renewable energy sources with a Swiss agship project. JUNE 2016 29 © EWZ Low fuel qualities of waste wood mixtures as well as strict emission limits of the Swiss Clean Air Act (LRV) posed massive challenges for the biomass heating plant of the “energy city” of Ilanz. For Polytechnik, however, this was an absolute competitive advantage. The Austrian biomass expert was able to meet the high requirements for air pollution control. Revolutionary combustor geometry The entire process comprises plant engineering with hydraulic silo discharge and feeding into the combustion chamber, combustion technology with water-cooled feed grate fi ring and zone regulation for combustion air as well as an exhaust-heat thermal oil boiler with a sootblower to clean heating surfaces. The plant also includes the required fl ue gas cleaning system with a sleeve webbing fi lter and neutralisers to meet the stricter limits for solid and gaseous emissions of the Swiss Clean Air Act. The centrepiece of the biomass and wastewood furnace is its special combustor geometry for the optimisation of gas retention and consistent air staging while adding further recirculation gas to regulate the combustion chamber’s temperature. Gas fl ow decreases in the secondary combustion chamber, practically burning off the exhaust gas’s entire CO content as well as its solids. Continuous emission control To facilitate emission control, gas quantities (EMI), which are permanently taken from exhaust pipes, are used to analyse and support combustion regulation as well as documentation for government authorities. “The analysing system can provide emission data for authorities with hourly, daily, weekly and yearly averages. This system builds trust and promotes wood energy as part of the Swiss Resources and Energy Strategy 2035 with the clear goal to promote cleantech for a green economy,” says Beat Huber, Managing Director of Swiss Polytechnik. All-round care The plant is handled by ewz’s trained personnel and supported by Polytechnik’s process control engineering and its visualisation. With its new remote maintenance software, the boiler manufacturer ensures the plant operator’s monitoring of individual conditions and helps him to constantly optimise customer-specifi c settings. Additionally, Polytechnik ensures the heating plant’s smooth operations and availability for years to come with a special service hotline, which is available 24 hours a day and 365 days a year. QUERIES & CONTACT Polytechnik Luft- und Feuerungstechnik GmbH 2564 Weissenbach • Hainfelderstraße 69 Phone: +43/2672/890-0 offi ce@polytechnik.at www.polytechnik.com
NEW BUSINESS - EXPORT TODAY 1/2016
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