JP2000282046A - Coke dry quenching facility - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coke dry quenching facility in which coke body structure becomes firm and coke particle size distribution in a cooling chamber is improved. SOLUTION: In this coke dry quenching facility equipped with a cooling chamber 2 for cooling red-heat coke by blowing a cooling gas into the coke and a pre-chamber 1 installed in the upper part, the upper part of the cooling chamber 2 is made to communicate through plural coke charge pipes 6 provided at intervals in the circumferential direction of the cooling chamber 2 with the lower part of the cooling chamber 2 and a cooling gas sucking pipe 3 is provided in the center of the upper part of the cooling chamber 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a coke dry fire extinguishing system for cooling red hot coke discharged from a coke oven.

[0002]

2. Description of the Related Art FIGS. 3 and 4 are cross-sectional views of a conventional coke dry fire extinguishing system. In FIG. 3, a coke dry fire extinguishing system 20 includes a cooling chamber 21 for cooling red hot coke and a pre-cooling chamber provided at an upper portion thereof. The chamber 22 is made of a brick, and the pre-chamber 22 plays a role in reducing the fluctuation of the amount of red hot coke intermittently supplied from the coke oven. A plurality of sloping flues 23 for extracting the high-temperature gas exchanged between the cooling chamber 21 and the pre-chamber 22 are provided in an annular shape, and an annular duct 24 communicating with the sloping flu 23 is formed around the inner cylindrical brick wall of the pre-chamber 22. The exhaust gas from the annular duct 24 is introduced into the boiler via a dust remover.

Further, as shown in FIG.
In Japanese Patent Application Laid-Open No. 909, a hot gas outlet 32 is provided at the center of the top floor of a cylindrical bunker main body 31, and a plurality of red hot coke supply ports 33 are provided at a peripheral portion. The red hot coke supply port 33 is constituted by the lower end openings of four branch passages 35 branched from one coke input port 34, and a cooling gas distributor 36 is provided in the lower center of the bunker body 31, and the cooling gas distributor 36 is provided. Release. A coke outlet 37 is provided at the lower end of the bunker body 31.

[0004]

In the coke dry fire extinguishing system shown in FIG. 3, since the sloping flue portion is of a brick structure and thus weak in strength, the coke cooling gas passage area must be increased when enlarging the facility. Is difficult. In addition, as the number of years of operation increases, it is necessary to perform repairs, and there is a drawback that costs and equipment downtime are increased. Also, since coke is injected from the center, the center becomes a high mountain shape, large lump coke gathers around, and conversely, fine coke gathers in the center, so there is a lot of cooling gas around,
The central part tended to hardly flow and the cooling efficiency was low.

Further, in the coke dry-type fire extinguishing system shown in FIG. 4, coke is supplied from a coke oven in a batch system, and the coke deposition surface position always fluctuates and the amount of coke in the bunker fluctuates. The gas temperature at the outlet 32 also fluctuates, and the gas temperature at the boiler inlet fluctuates, making stable operation difficult. Also, when the upper inlet is opened, the lower branch is a space, and there is nothing that becomes a resistance to the hot gas outlet. There is a disadvantage in that it burns on the coke surface and fluctuates the temperature of the hot gas outlet.

According to the present invention, the furnace body structure is strengthened,
An object of the present invention is to provide a coke dry fire extinguishing system in which the coke particle size distribution in a cooling chamber is improved.

[0007]

A coke dry-fire extinguishing system according to the present invention is a coke dry-type fire extinguishing system in which a cooling gas is blown to cool red-hot coke and a pre-chamber is provided above the cooling room. And the lower part of the pre-chamber communicate with each other through a plurality of coke charging pipes provided at intervals in the circumferential direction of the cooling chamber, and a cooling gas suction pipe is provided at the center of the upper part of the cooling chamber. It is characterized by having been provided.

[0008]

FIG. 1 is a longitudinal sectional view of a coke dry fire extinguishing system of the present invention, and FIG. 2 is a perspective view of the same. The coke dry fire extinguishing system is composed of an upper pre-chamber 1 and a cooling chamber 2 connected to a lower part thereof. A cooling gas suction pipe 3 for sucking a cooling gas is provided at the center of the ceiling of the cooling chamber 2, and a cooling gas supply pipe (not shown) for blowing the cooling gas and a coke outlet 4 are provided at the bottom of the cooling chamber 2. Is provided.

A red hot coke input port 5 is provided at the upper part of the pre-chamber 1 and a plurality of coke input pipes 6 are provided at the lower part.
Are provided at intervals in the circumferential direction of the cooling chamber 2, the lower end of the coke charging pipe 6 is connected to the ceiling of the cooling chamber 2, and the pre-chamber 1 and the cooling chamber 2 communicate with each other via the coke charging pipe 6. .

In the above configuration, red hot coke is injected into the pre-chamber 1 from the red hot coke input port 5 from a hopper installed above the pre-chamber 1. The injected coke descends from the pre-chamber 1 through the coke input pipe 6 and is charged into the cooling chamber 2, where the coke is exchanged with the cooling gas and cooled, and is discharged from the coke outlet 4 of the cooling chamber 2. . The gas warmed by the ripening exchange is sucked by the cooling gas suction pipe 3 at the center and supplied to the boiler side.

In the present invention, by storing coke in the coke charging pipe, the amount of coke that exchanges heat with the cooling gas in the cooling chamber becomes constant, and the gas temperature at the inlet of the cooling gas suction pipe can be kept constant. it can. Further, since coke is stored in the coke charging pipe, a large amount of air is not sucked even when the upper coke charging port is opened, so that the hot gas temperature becomes constant and stable operation becomes possible.

[0012]

According to the present invention, the structure can be stabilized by eliminating the sloping flue which is a conventional weak brick structure. Further, since coke is introduced from the periphery by the coke introduction pipe, large coke is easily collected in the central portion where the flow of the cooling gas is difficult, and the heat exchange efficiency in the cooling tower is improved as compared with the conventional method.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a coke dry fire extinguishing facility of the present invention.

FIG. 2 is a perspective view of a coke dry fire extinguishing facility of the present invention.

FIG. 3 is a cross-sectional view of a conventional coke dry fire extinguishing system.

FIG. 4 is a sectional view of another conventional coke dry fire extinguishing system.

[Explanation of symbols]

1: Prechamber 2: Cooling chamber 3: Cooling gas suction pipe 4: Coke outlet 5: Red hot coke inlet
6: Coke input pipe 20: Coke dry fire extinguishing equipment 21: Cooling room
22: Pre-chamber 23: Sloping flue 24: Annular duct
31: Bunker main body 32: Hot gas outlet 33: Red hot coke supply port 34: Coke input port 35: Branch path 36:
Cooling gas distributor 37: Coke outlet

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kosuke Yokote 46-59, Nakahara, Tobata-ku, Kitakyushu F-term in the Nippon Steel Corporation Engineering Division (Reference) 4H012 DA02

Claims (1)

[Claims] 1. A coke dry fire extinguishing system in which a cooling gas is blown to cool red hot coke and a pre-chamber is installed above the cooling chamber, wherein an upper part of the cooling chamber and a lower part of the pre-chamber are connected to each other by a cooling chamber. A coke dry fire extinguishing system characterized in that it communicates via a plurality of coke inlet pipes provided at intervals in the circumferential direction, and a cooling gas suction pipe is provided at the center of the upper part of the cooling chamber.