JPH0159513B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for processing granular materials such as ore and coke at high temperatures.
The present invention relates to a high-pressure gas-based granular material processing apparatus that performs heating, cooling, and other treatments using low-temperature high-pressure gas.

The agglomerate processing device generally accommodates agglomerates in layers on a rotating gas-permeable annular grid,
It has a structure in which high-temperature or low-temperature high-pressure gas is passed through the granular material for heat exchange, and is used for processing such as heating and cooling of various ores and metal compounds, specifically, calcination of pellets, carbonization of oil shale, etc. It is effective in cooling sintered materials (coke, etc.) and has been widely put into practical use.

A conventional example of the granular material processing device will be explained as follows.
Figure 1 (only a partial cross section of the annular structure is shown)
As shown, an inner annular member 1 and an outer annular member 2
and a gas-permeable annular lattice 3 disposed therebetween, an annular rotating frame 4 for accommodating the granular material a, an annular track 5 and wheels 6 for guiding and rotating the rotating frame 4, An annular upper hood 7 that covers and is fixed to the upper side, an annular lower hood 8 that covers and is fixed to the lower side of the rotating frame 4, and an annular trough that is provided on the inner and outer periphery of the lower part of the upper hood 7 and contains sealing liquid. 10a, 10b, and annular seal circumferential surfaces 11a, 11b that are vertically disposed on the inner and outer sides of the inner and outer annular members 1 and 2 of the upper part of the rotating frame 4 and submerged in the seal liquid. 12. Annular troughs 13a and 13b provided between the upper part of the lower hood 8, the outer peripheral edge and the lower part of the rotating frame 4, the inner and outer parts of the outer annular members 1 and 2, and the annular seal circumferential side surface 1
4a, 14b, and gas pipes 7a, 8b provided in the upper and lower hoods 7, 8. Processing gas b is supplied to the gas pipe 8a or 7a side. The structure is such that the liquid is introduced under high pressure from the annular grid 3 and flows through the granular material a deposited in layers to perform heating or cooling treatment by heat exchange. 12 and 15 serve to block high-pressure internal gas from the atmosphere by the water head of the sealing liquid I in the trough, and to prevent gas leakage in the upper and lower hoods 7 and 8.

However, in the conventional apparatus for treating granular materials using high-pressure gas, when processing granular materials to be treated when the permeability of the granular material is extremely poor, when the gas temperature is high, or when the gas flow rate is high, Since the ventilation resistance of the lumps becomes extremely high and the gas pressure inside the upper and lower hoods becomes extremely high, the liquid seal trough mechanism with the structure shown in the figure actually secures a seal liquid head that can counter the high gas pressure. However, there are disadvantages such as gas leakage, resulting in decreased processing performance, deterioration of product quality, increased fan power, etc., and the occurrence of human disasters due to harmful gases. For example, regarding an oil siel carbonization device, if the oil siel stack height is 1 m, the pressure loss can reach 800 mm of water column pressure depending on the siel properties, and the actual height of the liquid seal trough mechanism is: In addition to the seal liquid head equivalent to the water column, it is necessary to take into consideration the peak rate of pressure fluctuation and to provide an allowance on the trough and seal circumferential side. Since the height reaches 1200 to 1600 mm, the height of the rotating frame, upper and lower hoods must be significantly increased in order to ensure the required height of the liquid seal trough mechanism without interfering with the rotating frame, wheels, etc. This requires a large amount of equipment, which has disadvantages such as a significant increase in cost and power.

The present invention was developed in order to eliminate the above-mentioned drawbacks in conventional high-pressure gas-based granular material processing equipment, and consists of inner and outer annular members and a gas-permeable annular lattice between them. An annular rotating frame that rotates while accommodating a lump, annular upper and lower hoods that cover and fix the upper and lower sides of the rotating frame, and inner and outer peripheral edges of the lower or upper part of the upper and lower hoods. A granular material processing apparatus comprising upper and lower liquid seal trough mechanisms provided between the upper and lower inner and outer peripheral edges of the rotating frame, and in which high-pressure gas is supplied from the lower hood or upper hood side, at least The liquid seal trough mechanism on the high pressure side is provided with an annular partition plate in the annular trough to provide a plurality of inner and outer annular liquid chambers, and the inner and outer seal peripheries are immersed in the seal liquid of the inner and outer annular liquid chambers. The liquid seal trough mechanism is characterized in that a sealed gas chamber having a side surface and covering a part of both the inner and outer seal liquid surfaces from above the annular partition plate is arranged oppositely on the annular trough. By arranging a plurality of inner and outer annular liquid chambers and a sealed gas chamber on the upper side that covers both the inner and outer sealing liquid surfaces from the annular partition plate, gas sealing performance is improved and the particle size is reduced. The object of the present invention is to provide a particulate matter processing apparatus using high pressure gas, which has improved performance and reliability in treating lump matter.

The present invention has the above-described structure, and in the upper and lower liquid seal trough mechanisms provided between the lower part or upper part of the upper and lower hoods, the outer peripheral edge and the rotating frame, the inner part of the lower part, and the outer peripheral edge, At least the liquid seal trough mechanism on the high pressure side is provided with an annular partition plate in the annular trough to provide a plurality of inner and outer annular liquid chambers,
A sealed gas chamber having inner and outer seal circumferential surfaces submerged in the seal liquid of the outer annular liquid chamber and covering a portion of both inner and outer seal liquid surfaces from above the annular partition plate is mounted on the annular trough. Because of this structure, the required sealing liquid head in the inner and outer annular liquid chambers is significantly reduced by the gas pressure in the sealed gas chamber, and the gas sealing performance is greatly improved, and the granule processing performance and Reliability is significantly improved, and the height of the liquid seal trough mechanism is significantly shortened, resulting in economic advantages such as miniaturization of the device, cost reduction, and reduction in driving power.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 2 shows an embodiment of the present invention, in which 1 is an inner annular member, 2 is an outer annular member, 3 is a gas permeable annular lattice, and 1a and 2a are outer frame members of the annular arrangement. The inner annular member 1, the outer annular member 2, the annular lattice 3 disposed therebetween, and the inner and outer frame members 1a and 2a allow the granular material a to be
A rotary frame 4 is constructed which houses the rotary frame 4 in layers, and the rotary frame 4 is guided by inner and outer tracks 5 and wheels 6 and rotated by a rotational drive mechanism not shown.

Further, in the figure, 7 is an annular upper hood that covers the upper side of the rotating frame 4, and 8 is an annular lower hood that covers the lower side of the rotating frame 4. The upper and lower hoods 7 and 8 are as shown in the figure. It is fixed to the frame side by means such as a support rod and serves as a hood for high-pressure processing gas, and gas pipes 7a and 8a for introducing or discharging high-pressure gas b are provided.

Further, an upper liquid seal trough mechanism 20 and a lower liquid seal trough mechanism 30 are provided between the lower part or the inner outer peripheral edge of the upper part of the upper and lower hoods 7 and 8 and the upper inner and outer peripheral edges of the rotary frame 4. It is arranged.

The upper liquid seal trough mechanism 20 includes an annular trough 2 along the inner side of the inner annular member 1 and the outer side of the outer annular member 2 in the rotating frame 4 as shown in the figure.
1a, 21b are provided, and annular troughs 21a, 21b are provided.
An annular partition plate 22 is provided on the center line of the inner and outer annular liquid chambers 22a, each containing a sealing liquid.
23a, 22b, and 23b are provided, and a pair of annular inner and outer seal circumferential surfaces 24a, 25a, 24b, and 25b are provided on the inner and outer peripheral edges of the lower part of the upper hood 7, respectively, at appropriate intervals on the inner and outer sides. , each of the inner and outer seal peripheral surfaces 24a, 25a, 24b, 2
The inner and outer annular liquid chambers 2 correspond to the inner and outer annular liquid chambers 5b, respectively.
2a, 23a, 22b, 23b, and is submerged in the sealing liquid, and has a lower part of the upper hood 7 and a pair of inner and outer seal circumferential surfaces 24.
a, 25a, 24b, 25b, the inner and outer annular liquid chambers 22a, 2 are connected from above the annular partition plates 22, 22.
Sealed gas chambers 26a, 26b covering a portion of both seal liquid surfaces of seals 3a, 22b, 23b are disposed oppositely on annular troughs 21a, 21b.

The lower liquid seal trough mechanism 30 is different from the upper liquid seal trough mechanism 20 in that an annular trough is provided on the upper side of the lower hood 8 and inner and outer seal circumferential surfaces are provided on the lower side of the rotating frame 4. It has the same configuration except for the annular trough 31.
a, 31b, annular partition plate 32, inner and outer annular liquid chambers 32a, 33a, 32b containing sealing liquid A,
33b, inner and outer seal peripheral surfaces 34a, 35a, 3
4b, 35b, and sealed gas chambers 36a, 36b
It is composed of.

Furthermore, the sealed gas chambers 26a, 26b, 36
A and 36b are each connected to a pressurizing device 40 such as a gas cylinder via piping 41, and each of the sealed gas chambers is configured to have a gas pressure approximately intermediate between the high pressure gas in the device and the atmosphere. There is.

A supply port (not shown) for the granular material a is provided on the upper hood 7 side, and a supply port (not shown) is provided on the lower hood 8 side.
An outlet (not shown) is provided for the processed granular material a dropped by rotating a part of the annular lattice 3 or the like.

The illustrated embodiment has the above-mentioned configuration, and the granular material a to be treated is deposited and accommodated in a layer on the annular lattice 3 of the rotating frame 4 as shown in the figure. While rotating the rotating frame 4 at a slow speed by the mechanism, high-pressure processing gas is introduced from the gas pipe 8a side of the lower hood 8, and the annular lattice 3 is caused to flow from the lower hood 8 side by the high pressure. After the gas is passed through the granular material a and subjected to processing such as heating and cooling, the gas is passed through the upper hood 7 to the gas pipe 7a.
taken from.

In the case of the above usage example, if the inside of the lower hood 8 becomes high-pressure gas, for example, 800 mm of water column pressure, in the lower liquid seal trough mechanism 30, the sealed gas chamber 36
The gas pressure in a and 36b is controlled by the pressurizing device 40 to approximately
Use at 400mm water column pressure. In this case, the necessary seal liquid head in the inner and outer annular liquid chambers 32a, 32b, 33a, 33b is
Approximately 400mm each depending on the gas pressure in a and 36b
This means that a sufficient gas sealing function can be obtained with approximately 1/2 of that of the conventional mechanism. Similarly, in the upper liquid seal trough mechanism 20, the sealed gas chamber 26a, corresponding to the gas pressure in the upper hood 7, A similar gas sealing function can be obtained by ensuring the gas pressure in 26b at a predetermined value, the gas sealing performance is greatly improved, and the processing performance and reliability of the granular material a are significantly improved. Therefore, the liquid seal trough mechanisms 20, 30 of the present embodiment can significantly reduce the vertical height by reducing the water head, resulting in significant device downsizing.
Economic advantages such as cost reduction can be obtained.

In the above embodiment, a case was explained in which one annular partition plate was provided inside the annular trough, but two annular partition plates were provided to divide the inside of the annular trough into multiple inner, middle, and outer sections. It is also possible to provide an annular liquid chamber and two sealed gas chambers, which can further enhance the above-mentioned effects, and when the gas pressure on one hood side does not become too high, the high-pressure side (the above-mentioned In the explanation, it is also possible to configure only the liquid seal trough mechanism (on the lower trough side) as in the above embodiment.

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 partial longitudinal cross-sectional view of an annular structure in a conventional granular material processing apparatus, and FIG. 2 is a longitudinal cross-sectional view of only a portion of the annular structure showing an embodiment of the present invention. 1: Inner annular member, 2: Outer annular member, 3: Annular lattice, 4: Annular rotating frame, 7: Upper hood, 8: Lower hood, 21a, 21b, 31a, 31b: Annular trough, 22, 32: Annular partition Frame, 22a, 22
b, 23a, 23b, 32a, 32b, 33a,
33b: Inner and outer annular liquid chambers, 24a, 24b, 2
5a, 25b, 34a, 34b, 35a, 35
b: Inner, side seal peripheral surface, 26a, 26b, 36
a, 36b: Closed gas chamber.

Claims (1)

[Claims] 1. An annular rotating frame consisting of inner and outer annular members and a gas-permeable annular lattice therebetween, which rotates while accommodating granular materials, and annular upper and lower parts that cover the upper and lower sides of the rotating frame and are fixed. hood, and upper and lower liquid seal trough mechanisms provided between the lower part or the inner or outer peripheral edge of the upper part of the upper or lower hood and the inner or outer peripheral edge of the upper or lower part of the rotating frame, In a particulate matter processing apparatus to which high pressure gas is supplied from the upper hood side, at least the liquid seal trough mechanism on the high pressure side is provided with an annular partition plate in the annular trough to provide a plurality of inner and outer annular liquid chambers, and A sealed gas chamber having inner and outer seal circumferential surfaces submerged in the seal liquid of the inner and outer annular liquid chambers and covering a portion of both the inner and outer seal liquid surfaces from above the annular partition plate is provided on the annular trough. A device for processing granular materials using high pressure gas, which is characterized in that it is configured to be installed opposite to the device.