Abstract: A floor (2) of the device communicates with one or more ash-extraction pipes (3) associated with a semi-cooled conveyor. The conveyor is a drag conveyor (5) that travels over a semi-cooled floor (12) inside a housing (4). Several such semi-cooled floors are positioned one above another at several levels. The floors (12) at each level are divided into several tables (16) separated by slots (17) that extend across the direction traveled by the conveyor. The tables are mutually displaced level by level such that the rear end of every table is above the front end of a table in the floor just below it.

Abstract: A wet ash remover installation includes a first wet ash remover (5) which is placed in operating position under an ash funnel (2) of a boiler and a second, similar, movable wet ash remover (12) placed in reserve position. The wet ash removers (5, 12) respectively consist of a water-filled trough (7) which houses a conveying implement and in which a dip member (4) connected to the ash funnel (2) is immersed. Each trough (7) is provided in one of the side walls (13) and at the same height with an opening (14) extending to the upper edge of the side wall (13) and having a width which corresponds to at least the width of the dip member (4) and a height which corresponds to at least the maximum depth of immersion of the dip member (4) into the wet ash remover (5). The opening (14) is surrounded by a frame (17) supporting a compressible seal (19) and is closed by a rotatable gate (16) which engages the opening (14) from the inside.

Abstract: A chain conveyor in which two chains are connected together by scrapers and circulate in a casing, which are guided around rollers. In the direction of movement of the chain, in front of and above the entry of the chain into a roller, a shaped component is provided. The latter penetrates into the roller over a portion of the roller circumference. On its side remote from the roller, the shaped component is equipped with a deflector surface pointing towards the interior of the casing, the front edge of which surface is aligned with the shaped component.

Abstract: Wet ash removal equipment in which a trough is filled with quenching water. An immersion member attached to the ash funnel is immersed into the quenching water. A side wall of the trough is sealed by a plate. The plate is supported upon a height-adjustable rod linkage and is guided in its movement on the side of the trough arrangements of rollers.

Abstract: A wet ash remover which has a trough arranged underneath the ash funnel of a boiler and is filled with quenching water. A quenching water feed and an overflow are also provided. Ash conveying equipment passes through the wet ash remover. A cooling device with quenching water circulating through it continuously, is located between the overflow and the quenching water feed. One or more sets of parallel oblique plates are located inside the trough in front of the overflow. The set or sets of plates may extend throughout the entire length side of the wet ash remover. The plates may be inclined 50 to 60 degrees from the horizontal, and the planes may be planar. One of the sidewalls of the displaceable trough is connected detachably to the remainder of the trough and rigidly to stationary supports; the sidewall is at least as long as the immersion piece of the ash funnel protruding into the trough. The sidewall may accommodate the overflow and the set or sets of plates.

Abstract: An arrangement for hydraulic transport of precipitator dust in a precipitator plant, which is provided with several hoppers. These are consecutively arranged in flow direction of the gas to be cleaned passing through precipitator cells. The hoppers are located underneath a discharge device, and are provided with a sluice chamber having an inlet for rinse water and an outlet for a mixture of rinse water and precipitator dust. The exit of the sluice chamber of the rear hopper, in gas flow direction, is connected with the inlet of the sluice chamber of the preceding hopper by one sluiceway each. The sluice chamber of the last hopper, only, is supplied with fresh rinse water. The outlet gutter following the exit of the sluice chamber of the first hopper, may be closed by a weight-loaded flap.

Abstract: An immersion plate fastened to the ash funnel of a steam generator combustion chamber and protruding into the water surface of a trough of a wet-ash remover filled with quenching water and located underneath the ash funnel. Carriers pass transversely through the immersion piece and are suspended by screws from the tubing of the funnel; a seal which is deformable in the direction of action of the screws is located between the immersion piece and the ash funnel. The cooled carriers may consist of two U-profiles welded together and the carrier ends outside the immersion pieces may be open. A U-shaped profile with the opening upwards is mounted on part of the carrier lying within the immersion piece. The sidewalls of the immersion piece may consist of several plate sections and each plate section has, at one edge, a slot for the edge of the adjacent plate, with play in the longitudinal direction.

Abstract: A conveyor for removing pulverized fuel ash disposed within an ash extractor having two chains or belts interconnected by a plurality of cross members, each chain having an independently adjustable tensioning device which establishes a desired tension in each of the flexible chains or belts in order to eliminate any inherent slack or slack build-up as a result of frictional wear.