Biosolids Drying Plant, Christchurch
Energy for Industry Ltd responded to the council’s tender to supply heat under a 15 year Design Build and Operate (DBO) arrangement with EFI providing an innovative solution using a reliability centred design approach consisting of with a two boiler configuration and integrated wood fuel supply.
Located adjacent to the Council’s drying facility, the Biosolids Energy Centre is located and consists of -
4.5 MWth wood fuelled three pass water tube boiler with an inclined water cooled pinhole grate, flue gas recuperator for combustion air preheating and a flue gas bag filter;
4.3 MWth dual fuelled conventional fire tube biogas/diesel boiler. This boiler can fired on surplus landfill gas, digester gas and diesel or biodiesel;
A wood fuel reception and handling system with 200m3 on site storage of wood chip suitable for delivery of fuel by chip liner (high capacity) trucks; and
High temperature hot water reticulation pipe work from the BEC to the two biosolids dryers.