Abstract

The method is characterized in that the fine-grained fractions are extracted by means of a gas flow at least at one point in the cinder shaft (4) using a fan blower (8) and a connected pipe (9). The extracted gas is conducted through separators (10, 11) and the fine-grained fractions are separated therein from the gas by means of chemical, mechanical or electrical treatment. The gas which has been freed of the fine-grained fractions is thereafter blown in the same volume back into the cinder shaft (4), such that the gas flow balance and the pressure conditions therein remain unchanged in the upper and lower regions. The device for this purpose consists of at least one pipe connection in the cinder shaft wall to an extraction pipe (9), the outgoing extraction pipe (9) being connected to a fan blower (8) and to at least one separating device (10, 11) for extracting the fine-grained fractions from the gas. A return pipe (13) is used for feeding the gas freed of the fine-grained fractions back into the cinder shaft (4).

IPC Classes  ?

• F23J 1/06 - Mechanically-operated devices, e.g. clinker pushers
• F27D 25/00 - Devices for removing incrustations

Abstract

The invention relates to a hydraulic drive for a water-cooled sliding combustion grate. Each displaceable grate stage (6) is connected to at least one connection rod (30) supported at the other end thereof on a crank (31), wherein the associated crankshaft (32) is supported in a bushing (33) penetrating the side wall (2) of the grate construction. A crank (34) connected to the piston (35) of a hydraulic cylinder-piston unit (36, 35) is seated on the other side of the crankshaft (32), outside of the actual grate construction of the associated grate run, where said hydraulic cylinder-piston unit is disposed. The hydraulic components are thereby spaced further away from grate plates, and not exposed to abrasion. Said components, being disposed remotely from the grate plates (6), can also be replaced during operation of the grate.

IPC Classes  ?

• F23H 7/08 - Inclined grates with movable bars disposed parallel to direction of fuel feeding reciprocating along their axes
• F23H 17/00 - Details of grates
• F23H 3/04 - Grates with hollow bars externally cooled, e.g. with water, steam, or air
• F23H 17/08 - BearersFramesSpacersSupports

Abstract

The invention relates to a water-cooled sliding combustion grate which consists of either movable grate plates (6) or a combination of movable grate plates (6) and stationary grate plates (5). Said grate plates (5, 6) lie on top of each other in a step-like manner, and the movable grate plates (6) can be moved back and forth perpendicularly to their longitudinal direction. The length of the grate plates (5, 6) passing over the grate track width is more than 6 meters and they are supported on intermediate steel girders (45). The movable grate plates (6) are driven by one parallel drive each, which comprises two separate drive units, which can each move a respective end area of a movable grate plate (6) back and forth, wherein the two drive units can be synchronized. In order to separate the primary air transversely over the grate track over a plurality of areas, at least one partition can extend along the grate track under the grate and its stationary grate plates (5) and movable grate plates (6).

IPC Classes  ?

• F23H 17/08 - BearersFramesSpacersSupports
• F23H 7/08 - Inclined grates with movable bars disposed parallel to direction of fuel feeding reciprocating along their axes
• F23H 3/02 - Grates with hollow bars internally cooled

Abstract

The liquid-cooled grill plate has a carrier and drive design (15), having a separate cooling body (K) that can be placed into said carrier and drive design (15) and permeated by the liquid and having wear plates mounted onto said cooling body (K). The cooling body (K) is a welded design formed by square tube sections (20-26) and profiled sections (27), said design forming continuous elongated recesses (28-30) extending across the entire extension with the exception of the square tube sections (23-26) bridging said recesses (28-30). The carrier design is a ribbed configuration made of planar steel parts that are welded together and the drive unit (15) encloses a hydraulic cylinder-piston unit, which is accommodated in the inside of a square tube (18), said tube being guided displaceably in a tunnel-like breakthrough on said ribbed configuration. Between the wear plates and the cooling body (K) a highly heat-conductive soft silicone film (31) is clamped, which ensures good heat transfer. In this way, it is ensured that during operation the wear plates always remain in the non-critical temperature range in that they are cooled by the cooling body (K) disposed beneath, which heats up to about 50º C. Said grill plate is much easier and inexpensive to produce because the welding work is considerably reduced and less complex as a result of the use of a separate cooling body (K).

IPC Classes  ?

• F23G 5/00 - Methods or apparatus, e.g. incinerators, specially adapted for combustion of waste or low-grade fuels
• F23H 3/02 - Grates with hollow bars internally cooled
• F23H 7/08 - Inclined grates with movable bars disposed parallel to direction of fuel feeding reciprocating along their axes

Abstract

The invention relates to a grill consisting of liquid-cooled grill plates and liquid-cooled lateral panels, the surfaces of which are provided with wear plates (1) connected to the liquid-cooled grill plates (2) and lateral planks in a heat-conducting manner. Said wear plates (1) consist of a wear-resistant material which must however by cooled. Advantageously, a layer of a heat-conducting material in the form of a highly heat-conducting soft silicon film (3) is clamped between the liquid-cooled grill plates (2) and lateral panels and the wear plates (1), said layer providing a good heat transfer between the wear plates (1) and the permeable grill plates (2) and central panels. It is thus ensured that, during operation, the wear plates (1) always remain in a non-critical temperature range as they are cooled by the underlying grill plates (2) and lateral panels which are cooled to ca. 50°C g.

IPC Classes  ?

• F23H 3/02 - Grates with hollow bars internally cooled
• F23H 17/00 - Details of grates