JPS5828316B2 - 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 Fig. 1 and Fig. 2 ζ
There is something like this.

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, and after the coke packet f is received, the coke packet f is loaded onto the packet truck el. The locomotive d pulls the coke oven along the coke oven a and reaches the end of the hoisting tower g.

The coke bucket l-f that has reached the end of the hoisting tower g is pulled into the lower part of the hoisting tower g along with the packet cart e, and only the coke bucket l-f is pulled into the lower part of the hoisting tower g by a conveyor installed at the upper part of the hoisting tower g. is hoisted onto the upper part of the hoisting tower g, and is transported by running onto one preset fire extinguishing pot j out of several fire extinguishing pots j.

The coke bucket (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 G, and the coke C is charged into the fire extinguishing pot J, while Cooling inert gas (N
2 gas (mainly 2 gases) is blown into the fire extinguishing pot j (not shown), and the red-hot coke C is cooled oppositely.

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

The inert gas blown from the bottom of the fire extinguisher J exchanges heat with the red-hot coke, becomes high-temperature gas (approximately 800°C), passes through the duct K, and goes to the boiler I, where it exchanges heat with water and generates 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 extinguishing pot j again.

However, in the conventional example described above, the amount of 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 requires coke C to be pushed out from coke oven a into coke packets f. When the shell is dusted, heat loss, coke packet horizontally,
Vertical movement generates dust and heat (this causes dust pollution), and it is also uneconomical and inefficient in terms of heat recovery.

Furthermore, when coke is pushed out from coke oven a into coke buckets l-f, and when charged from coke oven front pipes l-f into fire extinguishing pipes j, the coke is powdered, resulting in poor yield.

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

The present invention minimizes the transfer of red-hot coke, prevents dust pollution, and effectively recovers heat.
It was developed with the aim of reducing equipment costs by omitting large-scale transport equipment, and was developed on the coke discharge side of a coke oven (a coke packet with a bottom opening device at the bottom of the guide chute to store coke). The present invention is characterized in that a car is provided so that it can run along the coke oven, and a plurality of fire extinguishing pipes for charging coke are provided below the line along which the bottom opening device moves.

Embodiments of the present invention will be described below with reference to FIGS. 3.4.5.

At the bottom of the charging coal tank 8, as shown in FIG. includes a coke packet car 2 with a guide chute 4
is mounted so that it can be moved by a drive device (not shown).

The volume of the guest room formed by the coke packet car 2 and the guide chute 4 is large enough to contain coke for one oven chamber of the coke oven 1, and the lower part of the guide chute 4 is equipped with a clamshell type bottom opening device. 5 is installed so that it can be opened and closed.

The fire pipe 6 has an outer shell 7 made of brick or steel plate,
A plurality of suction nozzles 15I are provided on the circumference of the outer shell 7 at a substantially central portion thereof, and an annular ring W14 is installed therein.

Each tubular pipe 14 is connected to a high-temperature gas pipe 16 that sends high-temperature gas to a boiler 17 .

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, and the cooling gas header pipe 20 is connected to an inert gas 9 for cooling.
It is connected to the cooling gas pipe 10 that sends the gas.

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 below the fire pipe 6, and an apron conveyor 12 is provided below 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.

The red-hot coke 3 for one furnace chamber is extruded from the coke oven 1 through a guide chute 4 and a coke packet car 2 in which a clamshell bottom opening device 5 is in a closed state.
Temporarily stored within.

After the storage is completed, the coke packet car 2 runs by an appropriate means O and stops at a predetermined fire extinguishing pipe 6, and then the clamshell type bottom opening device 5 is opened and the red-hot coke 3 is extinguished. The tube 6 is charged.

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 then into the fire extinguishing pipe 6, where the red-hot coke 3 is cooled oppositely.

The inert gas 9 exchanges heat with the red-hot coke 3 and becomes a high-temperature gas of about 800°C, which is sent from the suction nozzle 15 through the annular pipe 14 to the high-temperature gas pipe 16, and from the high-temperature gas pipe 16 to the boiler 17. The inert gas 9 is cooled to about 250°C and sent to a cyclone 18. After being removed from dust by the cyclone 18, it enters a circulation fan 19 and is cooled again. It is supplied to a predetermined fire extinguishing pipe 6 via a gas pipe 10.

On the other hand, the cooled coke is cut out by the cutting device 11 (thus, the apron conveyor 12), sent from the apron conveyor 12 to the coke discharge conveyor 13, and conveyed to a predetermined location by the coke discharge conveyor 13.

In addition, in the embodiment of the present invention, the boiler, cyclone, and circulation fan are gathered in one place, and inert gas for cooling is sent through piping to a group of small fire extinguishing pipes installed in front of the coke oven, and the inert gas is heat exchanged and heated to a high temperature. Although we have explained the case where the waste gas is sent to the boiler via piping, it is also possible to install a small boiler, cyclone, and circulation fan in one fire extinguishing pipe, without departing from the gist of the thin ice invention. Of course, various changes can be made within the scope.

Since the dry coke cooling equipment of the present invention has the above-described configuration, it can achieve the following excellent effects.

■) Since large-capacity equipment such as coke packets, packet carts, locomotives, pulling equipment, hoisting machines, and traveling equipment is not required, equipment costs are low and maintenance is also easy.

■) Heat recovery can be performed effectively.

(2) By reducing the number of transfers of red-hot coke, it is possible to reduce the chance of coke pulverization, thereby improving the yield of coke and reducing the chance of dust generation, making it possible to prevent dust pollution.

■) Since the extinguishing pot has a small diameter, the distribution of the cooling gas flow inside the pot is more uniform, which can increase the cooling rate and improve coke productivity.

■) By reducing the number of boilers, cyclones, circulation fans, etc. and increasing their size, centralized management will become easier.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of a conventional dry coke cooling facility, FIG. 2 is a plan view of FIG. 1, FIG. 3 is an explanatory diagram of a dry coke cooling facility of the present invention, and FIG. FIG. 5 is a plan view of FIG. 1 is a coke oven, 2 is a coke packet car, 3 is coke, 4 is a guide shoe 1, 5 is a clamshell type bottom opening device, 6 is a fire extinguishing pot, 9 is an inert gas, 10 is a cooling gas pipe, 11 is a cutout equipment, 12 is an apron conveyor;
13 is a coke discharge conveyor, 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. On the coke discharge side of the coke oven, a coke packet car with a bottom opening device (hereinafter referred to as a coke packet car) is provided at the bottom of a guide chute (with a bottom opening device) so as to be able to run along the coke oven so that coke can be stored, and a line along which the bottom opening device moves is provided. Dry coke cooling equipment characterized by having multiple extinguishers installed below for charging coke.