Equipment Spotlight Boiler Showcase New technologies and innovations in boiler technology By Staff Report VIESSMANN HURST BOILERS BIOMASS COMBUSTION SYSTEM The BCS 300 HP, hot water, wood boiler from Biomass Combustion System fea-tures the company’s horizontal zoned grate combustion system, which strictly regulates under fire air for gasification with low bed turbulence. The boiler burns dry sawdust and chips from the facility to heat dry kilns, but green wood fuel can be burned efficiently with adjust-ments to air and fuel delivery. The boiler is rated for 10 million BTU output and can maintain a 10 to 1 turndown ratio on dry fuel so it can operate at one million BTU/hr without losing the fire. Hurst Boiler provides its clients with the support and expertise necessary to de-sign, fabricate and install complete solid fuel boiler systems, from the fuel storage system through to exhaust gas emission mitigation. Various boiler designs are suitable for applications to produce high-pressure steam or hot water in ranges from 3,450 to 60,000 lbs/hr (3.4 mmBTU to 60 mmB-TU) output from 100 to 900 psi. Hurst systems are capable of burning material with 0 to 50 per cent moisture content. The systems also feature an automatic ash removal system, high temperature cast re-fractory ceramic lining and PLC controls. Viessmann’s Pyrotec fully-automatic un-derfeed combustion wood-fired boiler is available in five models with inputs raining from 1,330 to 4,268 MBH. It is designed for wood fuels with maximum water content of 50 per cent. The com-bustion chamber is lined with compressed firebricks with high alumina content for added durability. All grate elements are made of durable cast chrome steel. The boiler is built with a classic triple-pass heat exchanger design for maximum heat transfer and efficiency and a modulating output control with a 4:1 turndown ratio. It is available with a maximum operating pressure of 30 or 60 psig. 30 Canadian BIOMASS SEPTEMBER/OCTOBER 2015
Canadian Biomass September/October 2015: Page 30
