JP2576571Y2 - Dust collection device for receiving coal to hopper - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust collecting apparatus at the time of coal receiving for preventing the scattering of powdered coal when loading coal from a coal tower of a coke oven to a hopper of a coal loading car.

[0002]

2. Description of the Related Art In a coke oven charging and kiln discharging operation, when removing a furnace lid of a coking chamber where dry distillation has been completed, when loading red-hot coke from a coking chamber through a coke guide to a fire extinguishing car or a coke bucket, Alternatively, when charging coal into a carbonization chamber, a large amount of coke fine powder and hot air with powdered coal will leak into the atmosphere and scatter around the suburbs, causing pollution problems. Measures have been implemented. In addition, coal dust and coke scattered on the coke oven cause pollution problems due to secondary scattering. Dust in the upper furnace area is removed by suction.

[0003] Charging of the coal charged to the coking chamber of the coke oven is as follows.
The coal tower receives coal in the hopper of the coke truck that runs on the coke oven, receives coal from the coal tower, moves the coal truck to the specified coking chamber, removes the lid of the coal port on the furnace, and removes the charging hood. It is lowered to the coal charging port and the table feeder is driven to cut out the charged coal from the hopper and dropped into the carbonization chamber by gravity. In the charging operation of the coal charged into the coking chamber, the hot air replaced with the coal falling into the coking chamber is blown out from the coal charging port with dust along with the dust. However, measures to prevent the scattering of dust when receiving coal from the bunker of the coal tower to the hopper of the coal-equipped car have not been sufficiently implemented at present.

[0004] As a dust collecting device for receiving coal into a hopper of a coal-equipped truck, a dust collector having an outer periphery substantially below the coal tower bunker and substantially matching the inner periphery of the hopper of the coal-equipped truck and penetrating into the hopper of the coal-equipped truck. Coal dust scattering prevention device provided with a guide member having flexibility and flexibility (Japanese Patent Application Laid-Open No. 51-87259), or coal surrounding a damper section of a coal tower bunker with a hood and disposed along a coke oven furnace 2. Description of the Related Art There is generally known a method of connecting to a fixed dust collection duct at the time of work and performing suction processing on a large dust collection device installed on the ground.

[0005]

[Problems to be Solved by the Invention]
Apparatus disclosed in 259 Patent Publication, when受炭from coal tower bunker to instrumentation Tansha hopper, but hopper air capacity is 1/10 or less at the time of receiving coal complete, then the hopper pressure becomes higher 1 MPa. For this reason, it is unavoidable that the air containing the fine coal is scattered from the gap between the flexible guide member and the coal-equipped hopper. In addition, the method of surrounding the damper part of the coal tower bunker with a hood and connecting it to the fixed duct for dust collection during coal loading work is to run the coal driven truck between the coal tower bunker damper and the coal loading hopper mash. There is a drawback that not only is the dust collection not sufficient when the wind is strong, but also because the dust collection part is located at a high place, which requires a large amount of equipment cost.

It is an object of the present invention to provide a dust collecting apparatus for coal receiving to a coal loading hopper which is capable of preventing scattering of coal dust at the time of receiving coal from a coal tower bunker to a coal loading hopper at low cost and efficiently. It is in.

[0007]

Means for Solving the Problems The inventors of the present invention have conducted intensive studies and studies to achieve the above object. As a result, focusing on the fact that the on-furnace cleaner installed on the coal-charging truck was not used when receiving coal from the coal tower bunker in the hopper of the coal-charging truck, the open part between the upper end of the hopper and the outer periphery of the mesh metal was sealed with a sealing plate. It was concluded that dust was collected efficiently by sucking air inside the hopper, which was replaced with coal that fell during coal acceptance, by making full use of the dust collector and suction blower of the on-furnace cleaner, while completely sealing the furnace. We have arrived at this invention.

That is, the present invention is directed to a dust collecting apparatus for receiving coal, which prevents scattering of powdered coal when loading coal from a coal tower bunker of a coke oven into a hopper of a coal loading car. Is completely sealed with a sealing plate, and a dust collecting hole is provided in one place of the sealing plate, and connected with a dust collecting duct in front of a dust collector of an on-furnace cleaner installed on a coal-carrying truck, and dust collecting in each hopper. An air volume adjustment damper is provided in the duct, and an automatic switching damper is provided in the duct connection part in front of the dust collector to switch between dust collection on the furnace and dust collection when coal is collected. It is a dust device.

[0009]

In this invention, the space between the upper end of each hopper and the surrounding area of the hopper is completely sealed with a sealing plate, and a dust collecting hole is provided in one place of the sealing plate. Since it is connected to the duct and the dust collection duct, it prevents air that has been replaced by coal that has fallen into the hopper inside the hopper and scatters from the space between the upper end of each hopper and the surroundings of the hopper and sucks it effectively. Can be. In addition, an air volume adjustment damper is provided in the dust collection duct of each hopper, and an automatic switching damper for switching between dust collection at the time of furnace dust collection and coal receiving is provided at the duct connection part in front of the dust collector, so the distance difference between each hopper The imbalance in the amount of collected dust can be eliminated by adjusting the air volume adjustment damper, and the automatic switching damper can be used to switch between dust collection on the furnace and dust collection when receiving coal, so that dust collection is effectively performed when receiving coal. be able to.

[0010] The amount of dust collected by the on-furnace cleaner installed in the coal-charging truck is generally about 40 to 50 m ³ / min, but this suction capacity is loaded from the coal tower bunker into the coal-charging truck hopper. And the amount of dust-containing air that is displaced by the charged coal falling into the hopper and scattered outside. Therefore, almost all the dust-containing air in the hopper is sucked by the suction blower of the on-furnace cleaner, and does not scatter outside. If the amount of dust collected by the on-furnace cleaner is less than the amount of dust-containing air that is displaced by the charged coal falling into the hopper and scattered outside, adjust the opening of the cut-out gate of the coal tower bunker, and then transfer to the hopper. By slightly extending the loading time, the entire amount can be sucked.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below with reference to FIGS. FIG. 1 is an explanatory view of a main part of a dust collector when receiving coal into a hopper of the present invention, and FIG. 2 is an enlarged sectional view of a portion in which a space between an upper end of each hopper and a periphery of a mash is completely sealed by a sealing plate. . In FIG. 1, reference numeral 1 denotes a coal-carrying car, 2
Reference numeral 3 denotes a hopper for loading the coal loaded into the coal-carrying vehicle 1, reference numeral 3 denotes a mesh placed above the hopper 2, and reference numeral 4 denotes a load cell for detecting the loading amount of the coal charged to each hopper 2. Reference numeral 5 denotes a coal tower bunker, and reference numeral 6 denotes a cut gate installed below the coal tower bunker 5. Reference numeral 7 denotes a dust collector including a cyclone 8 of a furnace cleaner and a bag filter 9. A suction duct 10 connected to a suction port (not shown) is connected to the cyclone 8, and an outlet of the cyclone 8 is connected to an inlet of the bag filter 9. The output side of the filter 9 is the motor 11
And is discharged to the atmosphere.

Reference numeral 13 denotes a dust collection duct connected to each hopper connected via an automatic switching damper 14 to the inlet side of the cyclone 8 of the suction duct 10, and reference numeral 15 denotes an automatic switching damper provided in the suction duct 10. The dust collection duct 13 is connected to a sealing plate 18 that completely seals the opening between the upper end of each hopper 2 and the outer periphery of the mesh 3 through an air volume adjustment valve 16 and an individual duct 17, and opens the automatic switching damper 14. When the automatic switching damper 15 is closed and the blower 12 is driven by the motor 11, dust air in each hopper can be sucked into the cyclone 8 and the bag filter 9 via the individual duct 17 and the dust collection duct 13. . In addition, 1
Reference numeral 9 denotes a dust feed chain conveyor for collecting dust separated by the cyclone 8 and the bag filter 9 into the hopper 2.

With the above configuration, when loading coal from the coal tower bunker 5 onto each hopper 2 of the coal-charging car 1, the hopper 2 of the coal-charging car 1 is positioned directly below the coal tower bunker 5. When the automatic switching damper 15 of the on-furnace cleaner is closed and the automatic switching damper 14 is opened, and the blower 12 is driven by the motor 11, preparation for dust collection at the time of coal receiving is completed. Thereafter, the cut gate 6 is opened, the charged coal is cut out, and is loaded on each hopper 2. The dust-containing air that has been replaced with the charged coal that has dropped into each hopper 2 via the metal mold 3 is removed. , The individual duct 17, the dust collection duct 13, and the suction duct 10, which are sucked by the blower 12 and adjusted in air volume by the air volume adjustment valve 16 for each hopper 2.
After being introduced into the cyclone 8 and the bag filter 9 to remove the dust contained therein, and discharged into the atmosphere.

Therefore, the dust-containing air that has been replaced by the charged coal falling into the respective hoppers 2 of the coal-equipped truck 1 when receiving the coal is filled with the open portion between the upper end of each hopper 2 and the outer periphery of the mesh 3. Since it is completely sealed by the sealing plate 18, it is efficiently introduced into the cyclone 8 and the bag filter 9 through the individual duct 17, the dust collection duct 13, and the suction duct 10,
Dust is removed. When the loading of coal into each hopper 2 of the coal-equipped truck 1 is completed, the cut gate 6 is closed, the motor 11 is stopped, the automatic switching damper 15 is opened, the automatic switching damper 14 is closed, and the furnace is closed. The preparation for suction of the upper cleaner is completed, and the coal-equipped vehicle 1 is caused to travel to a predetermined carbonization chamber.

[0015]

[Effect of the invention] As described above, according to the invention,
By effectively using the on-furnace cleaner installed in the existing coal-equipped truck, dust can be collected in the coal-equipped truck hopper when receiving coal, and the operation can be carried out efficiently with extremely low equipment costs.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a main part of a dust collector when receiving coal into a hopper of a coal-equipped truck of the present invention.

FIG. 2 is an enlarged cross-sectional view of a part in which a space between the upper end of each hopper and the periphery of a mold is completely sealed by a sealing plate.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Coal loading car 2 Hopper 3 Masu 4 Load cell 5 Coal tower bunker 6 Cut gate 7 Dust collector 8 Cyclone 9 Bag filter 10 Suction duct 11 Motor 12 Blower 13 Dust collection duct 14, 15 Automatic switching damper 16 Air flow control valve 17 Individual duct 18 Sealed Plate 19 Dust feeding chain conveyor

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) C10B 31/04 B65G 69/18 C10B 45/00

Claims (1)

(57) [Scope of request for utility model registration] Claims: 1. A coal dust collecting apparatus for preventing coal dust from scattering when loading coal from a coal tower bunker of a coke oven into a hopper of a coal loading car. Completely sealed with a sealing plate, provided with a dust collecting hole in one place of the sealing plate , connected with a dust collecting duct in front of a dust collector of an on-furnace cleaner installed on a coal-carrying truck, and airflow in a dust collecting duct of each hopper. A dust collecting device for receiving coal into a hopper of a coal loading vehicle, wherein an adjusting damper is provided, and an automatic switching damper is provided at a duct connecting portion in front of the dust collector for switching between dust collection on a furnace and dust collection during coal receiving.