A rotating grate for a biomass heating system is disclosed, the grate comprising: at least one rotating grate element; at least one bearing axle, by means of which the rotating grate element is rotatably mounted; at least one cleaning device attached to one of the rotating grate elements, wherein the cleaning device comprises a mass element movable relative to the rotating grate element; wherein the cleaning device is arranged in such a way that, upon rotation of the rotating grate element, an acceleration movement of the mass element is initiated so that the cleaning device exerts a knocking effect on the rotating grate element in order to clean the rotating grate element.

A biomass heating system for firing fuel in the form of pellets and/or wood chips is disclosed, comprising: a boiler with a combustion device; a heat exchanger with an inlet and an outlet; wherein the combustion device comprises a combustion chamber with a primary combustion zone and with a secondary combustion zone provided downstream thereof; the combustion device having a rotating grate on which the fuel can be burned; the secondary combustion zone of the combustion chamber being fluidically connected to the inlet of the heat exchanger the primary combustion zone being laterally enclosed by a plurality of combustion chamber bricks.

Pellet grills and associated methods of operation are disclosed. An example pellet grill includes a burn pot configured to combust pellet fuel received within the burn pot. The pellet grill further includes an auger configured to deliver the pellet fuel to the burn pot. The pellet grill further includes an auger motor operatively coupled to the auger. The pellet grill further includes one or more processors configured to determine whether a shutdown sequence of the pellet grill has been initiated. The one or more processors are further configured, in response to determining that the shutdown sequence has been initiated, to command the auger motor to reverse a direction of rotation of the auger. The reversal is to cause pellet fuel which the auger has not yet delivered to the burn pot to be purged in a direction away from the burn pot.

A biochar apparatus and a related biochar module may have a horizontal table-shaking mechanism and a tapered channel for causing biochar pieces generated in a firebox to fall through openings in the table to a conveyor system below. The table may be configured with replaceable grate panels. A quenching reservoir pan for holding quenching liquid receives a drainage basket at a discharge end of the conveyor system for quenching hot pieces of biochar and allowing easy retrieval of the quenched pieces.

Pellet grills and associated methods of operation are disclosed. An example pellet grill includes a main body defining a cooking chamber. The example pellet grill further includes a burn pot located within the main body. The burn pot includes an upper end, a lower end located opposite the upper end, and a sidewall extending between the upper end and the lower end. The sidewall has an opening. The example pellet grill further includes an ignitor extending into the burn pot through the opening of the sidewall. The example pellet grill further includes an ignitor carrier removably coupled to the ignitor. The ignitor carrier extends away from the burn pot and is accessible from outside the main body.

Pellet grills and associated methods of operation are disclosed. An example pellet grill includes a burn pot including an upper end having a first opening, a lower end located opposite the upper end and having a second opening, and a sidewall extending between the upper and lower ends. The example pellet grill further includes a fuel grate positioned within the burn pot between the upper and lower ends. The fuel grate is configured to support pellet fuel within the burn pot. The fuel grate includes a plurality of ash openings dimensioned to enable ash produced from combustion of the pellet fuel to pass downwardly through the fuel grate toward the second opening.

Pellet grills and associated methods of operation are disclosed. An example pellet grill includes a main body defining a cooking chamber. The main body includes a first end, a second end located opposite the first end, and an outer wall extending between the first and second ends. The main body has a lateral extent defined by the first and second ends. The example pellet grill further includes a hopper mounted to a rear portion of the outer wall of the main body. The hopper includes a fuel intake opening extending from a first location within the lateral extent of the main body to a second location outside of the lateral extent of the main body.

The disclosure relates to a burner for burning combustible material in the form of a comminuted wood product, especially fine material, with (a) a combustible material feed for supplying the combustible material, (b) a screw conveyor for conveying the combustible material, (c) a combustion zone, wherein the screw conveyor is arranged to convey the combustible material (18) from the combustible material feed (20) to the combustion zone, (d) an air feed for supplying air to the combustion zone, and (e) a burner mouth for leading combustion gases out of the combustion zone. According to the disclosure, a compacting zone is provided, which is configured behind the combustible material feed and in front of the combustion zone in the direction of material flow (M) of the combustible material, wherein an auger of the screw conveyor and the compacting zone are preferably designed to compress the combustible material in the compacting zone.

Pellet grills and associated methods of operation are disclosed. An example pellet grill includes a main body defining a cooking chamber. The main body includes a first opening extending through a bottom portion of an outer wall of the main body. The main body further including a grease channel formed along the bottom portion of the outer wall and extending to the first opening. The example pellet grill further includes a burn pot located within the main body. The burn pot includes a lower end having a second opening aligned with the first opening. The second opening is configured to enable pellet fuel ash to pass downwardly from the burn pot onto an ash slide positioned below the second opening. The example pellet grill further includes a waste collection drawer located below the main body. The waste collection drawer is movable relative to the main body between a closed position and an open position. The waste collection drawer includes a grease bin positioned below the first opening and configured to receive grease from the grease channel when the waste collection drawer is in the closed position. The waste collection drawer further includes an ash compartment positioned below the ash slide and configured to receive pellet fuel ash from the burn pot, via the ash slide, when the waste collection drawer is in the closed position.

An apparatus and a method are provided for continuously drying bulk goods, in particular wood fibers and/or wood chips, in a dryer, wherein the drying vapors are led to a dryer circuit, in which the drying vapors are indirectly heated via a heat-exchanger and are conducted to the dryer again.