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Höcker North America provides biomass systems solutions for the woodworking industry by providing woodworkers with financially viable energy saving solutions through reducing, reusing and recycling waste steam into energy.
Turning your company’s waste into affordable on-site useable fuel is not only efficient, but can create value, reduce costs, and set your company up as a leader in green manufacturing practices.
Höcker North America can size and custom design a biomass boiler system for a single standing building or industrial complex. We can also design a material handing and storage system to create your fuel and store it appropriately for use or sale.
The USF-W biomass boiler unit features a performance range of 205 kW up to 1000 kW, distinguished by its lying heat exchanger and the small overall height of the boiler plant.
The generous dimensioned and fully ceramic-lined combustion chamber offers the possibility to burn chippings, pellets and wood chips up to a humidity of 60%. The USF-WR was extended with an automatic heat exchanger cleaning.
• Triple Pass Boiler with Horizontal Heat Exchanger Tubes
• Combustion Chamber Manufactured with High temperature Ceramic Cement
• Large Volume Heat Exchanger
• Fully Automatic Cleaning of the Boiler
• Rotating Combustion Chamber for a Re-burning in the First Heat Exchanger Draft
• Automatic Ignition
Grate burning system
The large combustion grate area and the independently controlled split zone air supply are two key features. The pre drying and the following gasification of the fuel is ideal, allowing you to control and guarantee a high quality combustion up to W 50 (80% atro). The grates are made of high temperature durable cast alloy with a high amount of chrome. The optimized air injection both cools and automatically cleans the grate bars, ensuring a long service life.
A central hydraulic power unit takes control of the cylinders. This controls the movement of the fuel feed ram stoker, moving grate, wedge pusher floor and the automatic cleaning of the heat exchanger.
Hydraulic ram stoker
The hydraulic ram stoker is driven by the central hydraulic power unit ensuring reliable fuel transport into the combustion chamber. The hydraulic ram stoker also acts as a back fire protection device, creating a combustion seal in its idle state.
The wedge pusher floor beneath the grate pushes the combustion ash to the ash auger. Through the movement of the grates there is a permanent supply of ash to the ash auger. Fly ash is removed before it reaches the heat exchanger to a settling chamber via an auger. From there an external channel and a drop shaft with a regulating flap moves the ash to the combustion ash chamber. All ash is moved from here to a single ash bin, simplifying operator ash handling. The automatic cleaning of the heat exchanger is the reason for a constant high level of efficiency.
• Triple Pass Boiler with Vertical Heat Exchanger Tubes and Combustion Base
• 10 mm Thick Boiler Barrel in the combustion chamber
• Fully automatic boiler cleaning
• Pre gasification and drying of moist fuel
• Automatic ignition
The generous dimensioned grate area for a clean combustion is a feature of the combustion design, the access to the ash conveyor stays closed until all of the fuel is burned.
The PLC control starts the grate movement and the ash is moved to the ash conveyor, at the same time the ash that remains under the grate wagon is moved to the ash conveyor.
The fire grates in the combustion chamber are molded alloy casting with high chromium content guaranteeing a longer life and optimized air injection. This causes a self cleaning and cooling of the grate bars, for a long lifespan.
Heat exchanger cleaning
Long cleaning interval and a low expenditure of time for the operator of the facility are our number one goal. The cleaning of the heat exchanger is fully automatic. A spiral conveyor moves the fly ash maintaining the boilers high efficiency. The ash is transported to the central ash bin outside the boiler.
Only one driving motor is responsible for the grate movement and the entire boiler cleaning process. That is profitability in the latest generation. The primary air fan on the rear cools the entire boiler bed and is the reason for lowest possible radiant loss of the facility even while the boiler is running permanently at full load.