9results about "Hollow bar grate" patented technology

The plate grate elements (1, 2) have a top wall (12), a bottom wall (13), a front end (14), and a rear end (15). The front end has a lower inwardly curved wall portion (16) adapted to maintain a predetermined gap with the rear tip edge of the corresponding grate element. The internal cooling fluid chamber (18) includes an internal front cooling fluid passage (19) extending along the front end (14) of the grate element. The grate element has an outwardly curved front wall (22) having a nominal wall thickness varying by less than ±35%, and a lower inwardly curved wall portion extending from the top wall of the grate element to the front end, and the outwardly curved front wall forming the front tip edge (23) of the front end at the junction of the outwardly curved front wall and the lower inwardly curved wall portion.

A grate assembly for use in a bottom section (28) of a combustion chamber (12) of a fluidized bed boiler (10) includes a grate bottom wall (32); a protective refractory material layer (36); a plurality of nozzle arrangements (38) for supplying fluidizing primary air; and at least one grate module (40) formed in the grate bottom wall (32). Each grate module (40) includes a solids removal opening (42); and a plurality of concentric lands (46) formed in the refractory material layer (36) and separated by front faces (48) between the lands. Each front face (48) surrounds one of the lands and follows the perimeter shape of a rectangle or a rectangle with at least one shaped corner. The lands (46) define a stepped structure. Each land includes a group of nozzle devices embedded in the layer of fire-resistant material (36) and adapted to inject air through one of the front faces (48) along one of the lands (46) adjacent the front face.

A cooled grate block as part of a grate for a system for thermally treating waste, including: a block body in the form of a cast part having an outer supporting face for the waste to be treated; a flat cavity situated directly below the supporting face, for receiving a cooling fluid; a fluid feed line and a fluid discharge line, which are connected to the cavity; at least one deflection element, which is arranged in the cavity to direct a cooling fluid within the cavity from the fluid feed line to the fluid discharge line; and a valve element situated in the end region of the cavity, for distributing the cooling fluid fed into the cavity through the fluid feed line.

The utility model provides a biomass fixed bed heat utilization comprehensive experiment device capable of inhibiting slagging, and particularly relates to the technical field of biomass heat utilization. The experimental device comprises a shell, a first water-cooled fire grate and a second water-cooled fire grate, the shell is provided with a feeding pipe, an exhaust pipe, a first air pipe and two air channels which are symmetrically arranged left and right, and each air channel is provided with a second air pipe; the first air pipe is communicated with a fire grate air inlet of the first water-cooling fire grate through a hose; the two air channels are provided with air guide plates parallel to a top plate of the second fire grate shell. A detachable grate is further horizontally arranged in the inner cavity of the shell. According to the utility model, the main parts are detachably connected, and the experiment test or demonstration process of various heat utilization occasions can be realized by detaching or retaining the corresponding parts according to different heat utilization occasions; in addition, the fire grate with a water cooling effect is utilized, so that the phenomenon of high-temperature slagging is effectively inhibited.

The grate (10) includes: grate plate (1), cooling water passage (2), slipper (3), side plate (4), pin (5), central fixed bearing (6), two side fixed bearings (7), water inlet (8), and drainage passage (9). The grate plate (1) is located on the upper part of the grate (10). The grate plate (1) extends throughout the grate (10) in the surface direction. The grate plate (1) is rectangular when viewed from above. The grate plate (1) is in contact with the combustion material. The surface of the grate plate (1) is constructed of a wear-resistant and corrosion-resistant material. The grate plate (1) is a plate with an integral continuous shape in both the length and width directions.

The plate-formed grate element (1, 2) has a top wall (12), a bottom wall (13), a front end (14) and a back end (15). The front end has a lower inwardly curved wall portion (16) adapted to maintain a predetermined clearance with a back tip edge of a corresponding grate element. An internal cooling fluid chamber (18) includes an internal front cooling fluid channel (19) extending along the front end (14) of the grate element. The grate element has an outwardly curved front wall (22) having a nominal wall thickness varying by less than ±35 percent and extending from the top wall of the grate element to the lower inwardly curved wall portion of the front end, and a front tip edge (23) of the front end is formed by the outwardly curved front wall at its connection with the lower inwardly curved wall portion.

Cooled grate block (1) as part of a grate for a plant for the thermal treatment of waste, comprising: a block body (3) designed as a casting with an outer support surface (7) for the waste to be treated, a planar cavity (50) arranged directly below the support surface (7) for receiving a cooling fluid, a fluid supply line (52) and a fluid discharge line (54) which are connected to the cavity (50), at least one deflection element (66) arranged in the cavity (50) to direct a cooling fluid in the cavity (50) from the fluid supply line (52) to the fluid discharge line (54), and a distribution element (74) arranged in the end face region (11) of the cavity (50) for distributing the cooling fluid fed into the cavity (50) through the fluid supply line (52).

The invention relates to a grate bar (100) for combustion systems, comprising a substantially closed surface facing the combustion side, a rear support region which is designed to be supported on a grate support, a front nose region which runs between the surface and the front edge and which comprises a support region formed on the lower face, and a grate cooling tube system (102) which is integrated in the grate bar (100) for conducting a cooling liquid, wherein the grate cooling tube system (102) has an inlet distributor (104) for supplying the cooling liquid, an outlet collector (114) for discharging the cooling liquid, and multiple cooling tubes (108', 108", 112', 112"), each of which is individually connected to the inlet distributor (104) and the outlet collector (114) in a fluid-tight manner.