JPS5828315B2 - Dry coke cooling equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a dry coke cooling equipment that is capable of preventing dust pollution and effectively recovering heat.

Conventional dry coke cooling equipment includes those shown in FIGS. 1 and 2.

In such dry coke cooling equipment, coke oven a
The red-hot coke C pushed out from the coke guide wheel passes through the coke guide wheel and is deposited on the coke packet f placed on the packet truck e. After the coke packet is completed, the coke packet f is placed on the packet truck e. It is pulled along the coke oven a by the locomotive d in the state where it is placed, and is moved to the presentation tower g.
reach the end of.

The coke packets f that have reached the end of the hoisting tower g are pulled into the lower part of the hoisting tower g along with the packet cart e, and only the coke packets f are moved to the upper part of the hoisting tower g by a lifting machine installed at the upper part of the hoisting tower g. It is rolled up and transported over a preset fire extinguishing pot j among several fire extinguishing pipes j.

The coke packet f that has arrived on a predetermined fire extinguishing pot j is lowered by a hoisting machine, the bottom of the packet is opened by the packet bottom opening operation, and the coke C is charged into the fire extinguishing pot j,
On the other hand, cooling inert gas (N2
(mainly gas) is blown into the fire extinguishing pipe (not shown), and the red-hot coke C is cooled in the opposite direction.

The cooled coke is then transported to a predetermined location by a cutting device, an apron conveyor, and a discharge conveyor.

The inert gas injected from the lower part of the fire pipe j exchanges heat with the red-hot coke, becomes high-temperature gas (about soo'c), passes through the duct k, and goes to the boiler l, where it exchanges heat with water and produces steam. After the gas is cooled (to about 250° C.), it passes through a cyclone m to remove dust, enters a circulation fan n, and is blown into the fire extinguisher jar j again from the lower part of the fire extinguisher jar j.

However, in the conventional example described above, the coke contained in one coke packet f is 15 to 25 tons, and the temperature is as high as about 1000°C. Being transshipped multiple times and moving horizontally and vertically not only requires large and expensive packets and transportation equipment, but also when coke C is pushed out from coke oven a into coke packets f. Dust pollution occurs due to dust generation and heat loss during horizontal and vertical movement of coke packets, and it is also uneconomical and inefficient in terms of heat recovery.

Furthermore, when coke is extruded from coke oven a into coke packets f and when charged from coke packet f into fire extinguishing pipe J, coke is powdered, resulting in poor yield.

Furthermore, since various large-scale transportation equipment is used, maintenance costs are high, breakdowns occur frequently, and dry coke productivity is poor, and maintenance work is highly dangerous.

The purpose of the present invention is to minimize the movement of red-hot coke, prevent dust pollution, effectively recover heat, and reduce equipment costs by omitting large-scale transportation equipment. A coke guide wheel having a guide chute is installed on the coke discharge side of the coke oven so as to be able to run along the coke oven, and a tilting shaft is installed below the guide chute to receive coke for several coke oven chambers. It is characterized in that a plurality of conveying means such as chutes or steel caterpillar conveyors are provided, and an urn is provided below the end of the conveying means.

Embodiments of the present invention will be described below with reference to FIGS. 3, 4, and 5.

At the bottom of the charging coal tank 23, as shown in FIG. 5, a coke oven 1 having a relatively narrow number of discharge ports is provided. A coke guide car 2 having a guide chute 4 is mounted so that it can be driven by a drive device (not shown).

At the front of the coke oven 1, a plurality of tilting chutes 5 for receiving coke for several coke oven chambers are provided along the coke oven 1 so as to be able to rotate from side to side about a rotating shaft 8. In the lower part between the tips of the tilting chutes 5 and 5, small-capacity fire extinguishing pots 6 provided according to the furnace chamber groups are arranged in appropriate numbers so that they can receive the red-hot coke 3 even from the tilting chutes 5 that are tilted left and right. It is set up.

The fire extinguishing pot 6 has an outer shell 7 made of brick or steel plate,
An annular pipe 14 is installed in a plurality of suction nozzles 15 provided on the circumference of the outer shell 7 at approximately the center thereof.

Each annular pipe 14 is connected to a high temperature gas pipe 16 to a boiler 17.
is connected.

A cooling gas header pipe 20 is connected to a plurality of cooling gas blowing nozzles 21 provided on the circumference of the lower part of the outer shell 7.
The cooling gas header pipe 20 is connected to a cooling gas pipe 10 that sends inert gas 9 for cooling.

The cooling gas pipe 10 is connected to the boiler 17 via a circulation fan 19 and a cyclone 18.

Two boilers 17 are installed in consideration of periodic inspection, and one set of standby circulation fans 19 is provided in consideration of periodic inspection and repair.

A cutting device 11 is provided at the bottom of the fire extinguishing pot 6, and an apron conveyor 12 is provided at the bottom of the cutting device 11.

The cooled coke discharged from the apron conveyor 12 is conveyed to a predetermined location by a coke discharge conveyor 13.

Red-hot coke 3 is extruded from the coke oven 1 through a coke guide car 2, is supplied to a tilting chute 5 through a guide chute 4 attached to the coke guide car 2, and is supplied to a tilting chute 5 from the tilting chute 5 at an appropriately selected predetermined level. is charged into a fire extinguishing pot 6.

From the cooling gas pipe 10, an inert gas 9 mainly composed of N2 gas is sent to a cooling gas header pipe 20, and is sent into the fire extinguishing pot 6, where the red-hot coke 3 is cooled oppositely.

Inert gas 9 is heat exchanged with red-hot coke 3,
The high temperature gas becomes approximately 800 ml, and is sent from the suction nozzle 15 through the annular pipe 14 to the high temperature gas piping 16, and is supplied from the high temperature gas piping 16 to the boiler 17, where it is heat exchanged with the water in the boiler 17 to turn the water into steam. Thus, the toner gas 9 is cooled to about 250 °C and sent to the cyclone 18, where it is dust-removed, enters the circulation fan 19, and is again supplied to a predetermined fire extinguishing pot 6 via the gas pipe 10. .

On the other hand, the discarded coke is cut by a cutting device 11 onto an apron conveyor 12, sent from the apron conveyor 12 to a coke discharge conveyor 13, and conveyed to a predetermined location by the coke discharge conveyor 13.

In the embodiments of the present invention, boilers, cyclones,
Circulating fans are gathered in one place, and inert gas for cooling is sent via piping to a group of small fire extinguishing pots installed in front of the coke oven.
We have explained the case where the high-temperature gas that has undergone heat exchange is also sent to the boiler via piping, but it is also possible to install a small boiler, cyclone, and circulation fan in one fire extinguisher, and that It goes without saying that a steel caterpillar conveyor may be provided instead, and that various other changes may be made without departing from the gist of the invention.

The dry coke cooling equipment of the present invention can produce the excellent effects described above.

■ Large-capacity equipment such as coke packets, packet carts, locomotives, pulling equipment, hoisting machines, and traveling equipment is no longer required and can be replaced with simple chutes, resulting in lower equipment costs and easier maintenance.

■ The smaller diameter of the fire extinguishing bottle allows for a more even distribution of the cooling gas flow within the bottle, increasing the cooling rate.

This improves coke productivity.

■ By reducing the number of times red-hot coke is transferred and charged, the chances of the coke being pulverized are reduced, which improves the yield of coke and also reduces the chances of dust generation, thereby preventing dust pollution.

■ Heat recovery can be performed effectively.

■ Reducing the number of boilers, cyclones, circulation fans, etc. and increasing their size will make central management easier.

[Brief explanation of the drawing]

Figure 1 is an explanatory diagram of conventional dry coke cooling equipment, Figure 2
The figure is a plan view of Fig. 1, Fig. 3 is an explanatory diagram of the dry coke cooling equipment of the present invention, Fig. 4 is a plan view of Fig. 3, and Fig. 5 is a view taken along the V arrow in Fig. 3. . 1 is a coke oven, 2 is a coke guide car, 3 is coke, 4 is a guide chute, 5 is a tilting chute, 6 is a fire extinguisher, 9 is an inert gas for cooling, 10 is a cooling gas pipe, 11
12 is a cutting device, 12 is an apron conveyor, 13 is a coke discharge container, 14 is an annular pipe, 16 is a high temperature gas pipe,
17 is a boiler, 18 is a cyclone, and 19 is a circulation fan.

Claims (1)

[Claims] 1. A coke guide car having a guide chute is provided on the coke discharge side of the coke oven so as to be able to run along the coke oven, and a tilting chute or a steel shaft is installed below the guide chute to receive coke from several coke oven chambers. 1. A dry coke cooling facility characterized by having a plurality of conveying means such as caterpillars or raconveyors, and a fire extinguishing pipe provided below the end of the conveying means.