JPH0370547B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in particulate matter processing equipment.

Conventionally, when heating or cooling granular materials such as iron ore or coke, a circular circulation path is formed between a grate, that is, a hood box for gas confinement with a grate installed at the top and bottom of the grate. A horizontally rotating granule processing device is used that moves along the Fig. 3 shows an example of a dry cooling system for granular red-hot coke among conventional horizontal rotation type granular material processing equipment, Fig. 4 shows a longitudinal cross-sectional side view taken along the arrow line in Fig. 1, and Fig. 5 4 shows a coke discharge mechanism along the arrow line in FIG. It has pallet 2. This pallet 2 is provided with a grate 3 through which cooling gas passes, and on the inner and outer peripheries of the pallet 2 are upright annular inner and outer walls 4, 4', which together with the grate 3 form a channel-shaped cross-section coke 5 receptacle. It makes up the department. Furthermore, the inner and outer walls 4, 4' are
It is a rigid frame comprising annular members 6, 6' integral with the inner and outer walls 4, 4' and a beam member 7 connecting the inner and outer walls 4, 4', and the pallet 2 is supported in an annular shape via a support shaft 8. The rigid frame is tiltably supported by the members 6, 6', and has inner and outer annular rails 9, 9' fixed to the lower part of the annular members 6, 6', and inner and outer annular rails 9, 9' rotatably disposed on the base 10. Rotation (movement) about the vertical axis 1 via a large number of rollers 11, 11'
is supported. In addition, the above outer roller 1
Some of the rollers in the 1' row are driven by the electric drive device 12.
It is designed to be driven by A lever 13 is fixed to the outer end of the support shaft 8 of the pallet 2, and a guide roller 14 is rotatably provided on the lever 13, and the guide roller 14 is connected to the base 10a.
It is configured to move along an annular guide rail 15 fixed to. Further, above the pallet 2, an annular hood 17 having a plurality of cooling gas supply pipes 16 is fixedly attached to a base (not shown). Further, below the pallet 2, there are a plurality of gas exhaust pipes 8 that guide the gas that has passed through the grate 3.
An annular lower wind box 19 having a diameter is fixedly mounted on the base 10 in the vicinity of the pallet 2.
The annular hood 17 and the lower wind box 19 in this stationary state
A water seal device 20 is installed in the annular gap formed between the inner and outer walls 4, 4' of the pallet 2 and the hood 17 and the lower wind box 19 in order to provide a gas seal between the pallet 2 and the moving rigid frame. , 20' are attached. In addition, at the bottom of the lower wind box 19, a third
As shown in FIG. 4, a plurality of hopper parts 19a are formed, and a hopper part 21a of the cooled coke discharge part 21 is formed.
Each of the other hoppers except for the gas seal valve 22 transports dust falling from the pallet 2 while maintaining airtightness from the atmosphere inside the hopper to the annular conveyor 2 at the bottom.
It is designed to be discharged from the system after passing through step 3. In addition, a plurality of fixed partition walls 24 and a swing type partition wall 25 are provided in the hood 17, and the upper part of the coke layer 5 on the pallet 2 is circumferentially divided into a plurality of regions, each of which has a separate compartment. The flow of gas between them is now blocked. Further, on the upper part of the lower wind box 19 of the pallet 2 facing each of these partition walls 25, a plurality of seal plates 26 are arranged close to the lower surface of the pallet 2.
are provided, compartments corresponding to the compartments in the hood 17 are formed, and a circulation path for the cooling gas that has passed through the grate 3 is configured. In the above horizontal rotation type granular material processing equipment, red hot coke 5
is loaded in layers onto the pallet 3 from the supply section 27 on the hood, cooled while moving in the direction of arrow Z, and then transported out of the system from the lower hopper 21a of the discharge section 21 via a conveyor (not shown). Ru. On the other hand, the annular guide rail 15 is a convex rail 15a having an appropriate inclination in the front and rear directions at the discharge section 21, as shown in FIG. 14 passes through and comes into contact with the rail 15a, the pallet 2 is tilted around the support shaft 8, and the coke 5 on the grate 3 is discharged to the lower hopper 21a, and then the guide roller 14 is moved to the flat guide The pallet 2 moves onto the rail 15a, returns to a horizontal position, and moves to the coke supply section 27 again.

The conventional horizontal rotating type granular material processing apparatus shown in FIGS. 3, 4, and 5 has the following drawbacks. ()
When the pallet 2 is tilted, the coke agglomerates on the pallet 2 on the side opposite to the direction of movement move around the annular inner and outer walls 4,
4' and the pallet 2, causing significant wear. In particular, in this type of horizontally rotating granular material processing device, the inner and outer walls 4,
4' is lined with fireproof material 29 because of its high temperature, but due to the above-mentioned biting, the fireproof material 29
The wear and tear on the pallet 2 is extremely large, increasing maintenance costs, and in some cases, coke may stick to the pallet 2, making it impossible to tilt the pallet 2, making it impossible to operate the horizontal rotating granular material processing equipment. There was a problem.
() When the pallet 2 is tilted, there is no interference between the pallet 2 and the annular inner and outer walls 4, 4' due to thermal expansion of the pallet 2, manufacturing errors, etc. Only gap 28,2
8' is required. However, this gap remains as a gap even when the pallet 2 is in a horizontal position, so even though a compartment is formed by the partition wall 25 in the hood and the seal plate 26 in the wind box, Gas leaks between the compartments through the gaps 28, 28'. This means that gas is generated that moves between the wind boxes without passing through the coke layer 5, which not only lowers the cooling efficiency, but also reduces the amount of oil and combustible gas produced by heating, such as in the carbonization of oil siel. When extracting gas, air mixed in due to leakage between compartments can be
There was a problem in that the combustible gas was burned and the processing efficiency was reduced.

The present invention addresses the above-mentioned problems, and includes an annular inner and outer wall connected by a plurality of beam members, a stationary hood disposed above the inner and outer wall, and a ring-shaped inner and outer wall connected to each other about a vertical axis. a support device rotatably supported on the beam members; a plurality of fixed pallets with grate fixed on each of the beam members at intervals;
A plurality of tilting pallets with grate are installed between each of the fixed pallets in a tiltable manner, and a lower wind box in a stationary state is installed below between the inner and outer walls, and is suspended from each of the beam members. A seal plate in contact with the partition wall, a partition wall provided in the hood so as to face the seal plate and dividing the inside of the hood into a plurality of areas in the circumferential direction, The purpose of the granular material processing equipment is to provide an improved granular material processing equipment that can reduce maintenance costs and constantly operate the equipment stably. It is in the point of providing.

Next, the granular material processing apparatus of the present invention will be explained with reference to an embodiment shown in FIGS. 1 and 2. FIG. 2 is a longitudinal sectional front view of the main parts, and FIG. 1 is a longitudinal sectional side view taken along the arrow line in FIG. The pallet is a tilting pallet 2
The pallets are made of two types, ie, fixed pallets 2a and fixed pallets, which are arranged alternately in the circumferential direction, and each is equipped with a grate 3 that allows gas to pass through. The fixed pallet 2a is
The lower portions of the annular inner and outer walls 4, 4' disposed upright on the inner and outer peripheries of the fixed pallet 2a and the annular member 6,
It is fixed to beam members 7, 7' that connect the two parts. Also, a partition wall 31 facing downward and fixed from the beam member 7 is provided with a skirt 30 of the inner and outer walls 4, 4' extending downward from the lower part of the inner and outer walls 4, 4'.
30', and an airtight chamber is formed below the fixed pallets 2a and the tending pallets 2 that are arranged alternately. The tilting pallet 2 is tiltably attached to the lower part of the inner and outer walls 4, 4' via a support shaft 8 between the fixed pallets 2a. Further, the support shaft 8 is attached to the advancing end or the opposite advancing end of the tilting pallet 2 so that the tilting pallet 2 can be tilted downward from a horizontal position, and is rotatably attached to the annular members 6, 6'. Further, a lever 13 is fixed to the outer end of the support shaft 8, and a guide roller 14 is rotatably attached to the lever 13 and configured to move along an annular guide rail 15. Furthermore, a plurality of fixed partition walls 24 and a swinging partition wall 25 are provided in the hood 17, and the upper part of the granular material layer 5 on the pallets 2, 2a is divided into a plurality of areas in the circumferential direction. , gas flow between the compartments is prevented. Further, a plurality of seal plates 26 are provided above the wind box 14 at the lower part of the pallets 2 and 2a facing these partition walls 25 so as to be close to the partition wall 31 extending downward from the beam member 7 described above. A compartment corresponding to each compartment in 17 is formed to constitute a passage for gas passing through the grate 3. Further, in the discharge section 21, there is a scraper 32 for discharging the particulate matter remaining on the fixed pallet 2a by dropping it from between the tilted pallet 2 and the fixed pallet 2a after the tilting pallet 2a is tilted and the particulate matter is discharged. is fixed to the hood 17 in close proximity to the fixed pallet 2a.

Next, the operation of the granular material processing apparatus shown in FIGS. 1 and 2 will be explained. During operation of the granular material processing equipment, when the tilting pallet 2 passes through the sealing part, the fixed pallet 2a
Since the tilting pallet 2 is sandwiched between the tilting pallet 2 and the fixed pallet 2a, the partition wall 31 and the seal plate 26 on the side of the fixed pallet 2a before and after the tilting pallet 2 constitute an airtight chamber through which gas does not pass. For this reason,
The gaps between the tilting pallet 2 and the inner and outer walls 4, 4' and the side wall skirts 30, 30' are completely independent of leakage between the compartments. Also, tilting pallet 2
Since the pallet is tilted downward from the horizontal position centering on one end in the traveling direction, the pallet 2 is not tilted within the granular material layer. Regarding this cantilever support of the tilting pallet 2, there is a problem in that an excessive torsional moment is generated in the support shaft 8 and the lever 13 due to the weight of the granules on the pallet 2, but since the fixed pallet 2a supports most of the granules. , since it is only necessary to have a gap between the tilted pallet 2 and the fixed pallet 2a in which the granules scraped out by the scraper 32 can fall, the tilting pallet 2
The length of the support shaft 8 and the lever 13 can be short, and the torsional moment can be reduced, so that the support shaft 8 lever 13 does not require a strong member. Therefore, the problem of reduction in the gas permeation area due to the support shaft 8 when the cantilever tilting pallets 2 are connected does not occur.

The granular material processing apparatus of the present invention is constructed as described above, and since the tilting pallet 2 is not tilted within the granular material, the granular material is removed between the inner and outer walls 4, 4' and the pallet 2. It is possible to eliminate jamming, prevent wear and tear on the refractory material 29 and the tilting pallet, and contribute to reducing maintenance costs.
The problem of sticking when particulates get caught is also solved, and stable operations are achieved. In addition, leaks between compartments caused by gaps between the tilting pallet 2, inner and outer walls 4, 4', and side wall skirts 30, 30' are eliminated, improving particulate matter processing efficiency during heating and cooling, and improving productivity. There are effects that can contribute to improvement.

Although the present invention has been described above with reference to embodiments, it goes without saying that the present invention is not limited to such embodiments, and that various design modifications can be made without departing from the spirit of the present invention. .

[Brief explanation of drawings]

FIG. 1 is a vertical cross-sectional side view taken along the arrow line in FIG.
3 is a perspective view of a conventional granular material processing device, FIG. 4 is a longitudinal sectional front view taken along the arrow line in FIG. 3, and FIG. 5 is a vertical sectional view taken along the arrow line in FIG. FIG. 1...Vertical axis line, 2...Tilt pallet, 2a...
... Fixed pallet, 4, 4' ... Inner and outer walls, 7,
7'... Beam member, 9, 9', 11, 11'... Support device, 17... Hood, 19... Lower wind box, 2
5, 31... Partition wall, 26... Seal plate,
32...Scraper.

Claims (1)

[Claims] 1. An annular inner and outer wall connected by a plurality of beam members, a stationary hood disposed above the inner and outer walls, and a support device that supports the inner and outer walls rotatably about a vertical axis; A plurality of fixed pallets with fire grates fixed at intervals on each of the above-mentioned beam members, a plurality of tilting pallets with fire grates provided tiltably between each of the fixed pallets, and a lower part between the above-mentioned inner and outer walls. A seal plate is provided on the lower wind box in a stationary state and is in contact with the partition wall hanging from each of the beam members, and a seal plate is provided in the hood so as to face the seal plate and is provided in a circle inside the hood. a partition wall that partitions into a plurality of areas in the circumferential direction;
A granular material processing device comprising: a scraper for scraping off granular materials on the fixed pallet at a discharge section.