JPH0366795A - Dry type coke extinguishing furnace and method for operating the same - Google Patents

Abstract

PURPOSE:To enable increase of flow rate, improvement of cooling ability and decrease of powdering and to improve yield and economy by opening and arranging a number of gas sucking ports at equal intervals in vertical and horizontal directions in the furnace wall between the space of sucking band and the first dust removing chamber. CONSTITUTION:In a vertical dry type coke extinguishing furnace, the first dust removing chamber 1 is provided along the outer circumference of furnace wall 10 of sucking band. The dust removing chamber 1 is separated by plural radial partition walls 2 and the upper part is communicated to circular flue 3 and a number of gas sucking ports 4 are opened and arranged on furnace wall 10 between sucking band space and the first dust removing chamber 1 in vertical and horizontal directions at equal intervals. Furthermore, flow amount and flow rate of inert gas for cooling can be controlled by selectively closing the gas ducking port 4 by a detachable closing article.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a coke dry fire extinguishing furnace attached to a coke oven and a method of operating the fire extinguishing furnace.

Conventional technology] - Coke dry extinguishing system attached to a coke oven
y quenching (hereinafter simply referred to as C, D, Q)
Technology developed in the Soviet Union was introduced into the equipment, and this type of C and D
, As an improvement technology for Q equipment, an annular chamber is formed on the outer periphery of the furnace ridge of the storage zone of the fire extinguishing furnace, and a large number of gas discharge ports are provided at approximately equal intervals in the circumferential direction in the upper end of the cooling chamber. A C, D, Q furnace has been proposed in which the gas outlet is provided in at least two stages above and below, in which the gas outlet is connected to the chamber.
Furthermore, in the C, D, and Q furnaces as described above, the inclination angle of the opening end of the gas discharge hole is set to a specific range,
Furthermore, C, D, and Q furnaces have been proposed in which the height of the partition wall exceeds the angle of repose of the coke charged into the furnace.
% Kaisho 62-2500904! Public bulletin).

Figure 4 shows an example of conventional C, D, and Q equipment.

The black arrow indicates the coke flow, and the white arrow indicates the flow of cooling gas.

Problems to be Solved by the Invention Various proposals have been made as described above, but the following deficiencies have been recognized in the conventional methods: (1) There is a large pressure difference between the inside and outside of the gas suction port of the CDQ furnace. Because of the high gas flow velocity associated with this, coke blows up at the upper part of the suction port, causing coke to accumulate in the flue and creating a risk of clogging the flue.

(2r r!JL Because the amount of coke that enters the lower part of the draw port (commonly called capri) is large, the flow (or descent) of coke in the furnace is uneven.

(3) In the conventional method, there is a limit to the number of suction ports that can be installed, and differences in pressure loss and flow velocity between the inside and outside of each opening occur. It is difficult to determine dimensions, angle of inclination, etc.

Means for Solving the Problems In order to solve the deficiencies of the known technologies as described above, the inventors of the present invention, as a result of various studies and experiments, succeeded in developing the coke dry fire extinguishing furnace of the present invention and the method of operating the fire extinguishing furnace. It is a thing,
The technical configuration of the present invention is, as specified in each claim, in a vertical coke dry fire extinguishing furnace in which a storage zone, a suction zone, and a cooling zone have the same inner diameter. A first dust removal chamber is provided along the line, and the dust removal chamber is divided by a plurality of radial partition walls. In a coke dry fire extinguishing furnace and such a coke dry fire extinguishing furnace characterized by having a large number of gas suction ports opened and arranged at equal intervals in the vertical and horizontal directions on the furnace wall, the gas suction ports can be attached and removed. A coke dry extinguishing method is characterized in that the flow rate of a cooling inert gas is controlled by selectively closing with a freely adjustable closing body.

DESCRIPTION OF THE PREFERRED EMBODIMENTS A specific example of the present invention will be explained in detail based on the accompanying drawings.

Figure 1 is a longitudinal sectional view of the coke dry fire extinguishing furnace of the present invention, Figure 2 is a cross-sectional view of only the suction zone along the line A-A@ in Figure 1,
FIG. 3 is a perspective view showing an example of a closure plug for the suction port of the suction band.

As shown in the figure, the fire extinguishing furnace of the present invention is configured such that the storage zone, suction zone C, and cooling zone d have the same inner diameter, and the first dust removal chamber 1 is arranged along the outer periphery of the furnace wall 10 of the storage zone and suction zone fC. It is set up. a indicates the charging zone.

The first dust removal chamber 1 is divided into a plurality of parts by a plurality of partition walls 2 in which the lower part (below the vacuum suction@e) is provided in an open/sealed manner. Outlet 6
It can be opened and closed freely.

The upper blade part of the first dust removal chamber 1 is an annular flue 3;
is connected to a second dust removal facility (not shown).

A large number of gas suction ports 4 are opened and arranged in the vertical and horizontal directions in the furnace wall 10 between the suction zone C and the first dust removal chamber 1, and the gas suction ports 4 are arranged outwardly as shown in FIG. It opens diagonally upward.

A large number of openings 5 that can be opened and closed are provided in the suction IFc portion of the outer wall 11 of the Oki 1 dust removal chamber 1, and the openings 5 are as shown in Figure 3. This is a working port for plugging the lug C' blocker) 20 into the suction port 4, and as described later, this plug 20 is used as appropriate when controlling the flow rate and flow rate of the cooling inert gas. be.

Although the suction port 4 is illustrated with a rectangular cross section, it is not limited to this shape, and may have other shapes.
Of course, the cross-sectional shape of the lug should also be a corresponding shape.

The structure of the fire extinguishing furnace of the present invention that is different from the conventional system has been described above, but the cooling inert gas injection and circulation mechanism, extinguishing coke discharge mechanism, and other features are the same as the conventional system.

Function: According to the coke extinguishing operation using the coke dry extinguishing furnace of the present invention having the technical configuration as described above, a large number of suction ports with few capri are widely distributed in the vertical and horizontal directions in the suction zone ear. [Because of this, the difference in flow velocity between the upper and lower parts of each suction part is extremely small, and the average gas flow rate per 1gA of suction port can be expanded.This allows the "coke blowing up" area to be almost ruthless. In addition, even if a small amount of zoox is blown up during high-speed suction operation, it will be collected in the dust chamber.

In addition, by uniformly drawing the coke over a wide area, the period of contact between the cold section gas and the coke ε becomes longer, so that the coke can be uniformly cooled continuously.

In addition, by making the inner poles of the storage zone, suction zone, and cooling zone the same, there is less "capri" at the suction port, and the flow of coke in the p direction becomes uniform, reducing uneven cooling. , the pulverization of coke will also be reduced.

Since gas suction is in one direction or in two directions, the suction position f
Kx has a difference in suction force ic between each suction LIK, and the gas flow becomes non-uniform. Therefore, some suction ports close to the suction direction are closed with the grabs (thread closure bodies) shown in O'3@, so that the suction force around the entire circumference of the suction band is evenly distributed.

This work to close the windows does not stop the work of the fire extinguisher, and...
This can be done from outside the furnace by simply stopping the air blowing (suction), which is a special arrangement.

Effect of the invention [1] Benefits of wide area suction (Gas flow rate can be increased by one suction port.

0 Compared to conventional local suction, the difference in gas flow velocity between the upper and lower parts of the tank becomes extremely small, increasing the average gas flow velocity and making it possible to increase the volume of mud.

As a result, so-called "coke blow-up" can be almost completely eliminated.

+21 Cooling capacity can be increased. (In terms of heat exchange rate), it is possible to increase the circulating gas flow rate, and the amount of cooling per unit volume increases.

(3) It is possible to improve and stabilize the quality of farm production.

In addition to being sucked into a wide area, it is possible to suck the coke uniformly around the entire circumference, making contact with the gas uniform, reducing the temperature gradient within the coke solid, reducing cracking and pulverization, and increasing the yield. Since the diameters of the storage zone, suction zone, and cooling zone are the same, the coke flows down uniformly and uneven cooling is reduced.

Furthermore, the movement of coke grains in the fire extinguishing furnace is small, resulting in a low pulverization rate T″f.

(41 Equipment costs can be reduced.

It becomes possible to significantly reduce the height of the cooling zone by expanding the range of the zero suction zone #c.

This means that the entire furnace height is lower, which means that the entire auxiliary equipment can be kept lower.

The furnace volume per O unit cooling capacity can be reduced, and the furnace body equipment, ventilation equipment, etc. can be made smaller by KMi compared to the conventional method.

(5) It is possible and easy to adjust the aperture distribution of the drawstring.

It is possible to adjust the opening density by changing the number and thickness of the openings in the circumferential direction and the furnace height direction, and it is possible to artificially perform uniform suction from the entire circumference.

[2] Effects of installing a dust removal chamber connected to a suction wall.

fil The fire extinguishing furnace body ε can be installed compactly within the same furnace, and the size of the vacuum chamber (conventional dust chamber) can be significantly reduced.

The equipment layout becomes more compact and construction costs can be reduced.

(2) There is no problem at all with ultra-straining operation, where high-speed suction operation is performed and the temperature of ℃ and 1-x rises slightly, and it can also be used for high-load operation.

[Brief explanation of drawings]

Fig. 1 is a vertical sectional view of the coke dry fire extinguishing furnace of the present invention, Fig. 2
Figure 1 is a cross-sectional view of only the suction clot portion taken along the line A-A in Figure 1, Figure 3 is a perspective view showing an example of a closing window Zojig for the suction port of the suction band, and Figure 4 is a ``This is an unconventional schematic diagram, middle: Construction: Oki 1 dust removal room, 2: Partition firefly, 3: Annular flue 1.4
: gas suction port, 5; opening, 6: powder outlet, 2: 7m lag, lO: furnace wall, for: charging zone, C: suction zone, d: cooling zone. : Exterior wall, Figure 1: Reservoir zone,

Claims (1)

[Claims] 1. In a vertical coke dry fire extinguishing furnace in which the storage zone, the suction zone, and the cooling zone have the same inner diameter, a first dust removal chamber is provided along the outer periphery of the furnace wall of the suction zone; The chamber is divided by a plurality of radial partition walls, and the upper part of the dust removal chamber communicates with the annular flue, and the furnace wall between the suction zone space and the first dust removal chamber has a plurality of vertical and horizontal partitions. Open the gas suction ports at equal intervals,
A coke dry fire extinguishing furnace characterized by the following: 2. The coke dry fire extinguishing furnace according to claim 1, wherein the outer wall of the first dust removal chamber is provided with a large number of openable and closable openings. 3. In a vertical coke dry fire extinguishing furnace in which the storage zone, suction zone, and cooling zone have the same inner diameter, a first dust removal chamber is provided along the outer periphery of the furnace wall of the suction zone, and the dust removal chamber has a plurality of radial partitions. The dust removal chamber is divided by a wall, and the upper part of the dust removal chamber communicates with the annular flue, and a large number of gas suction ports are provided in the vertical and horizontal directions on the furnace wall between the suction zone space and the first dust removal chamber. Openings at intervals,
A coke dry extinguishing method characterized in that, in a coke dry extinguishing furnace, the flow rate and flow rate of a cooling inert gas are controlled by selectively closing the gas suction port with a detachable closing body. .