JP4004355B2 - Carbon monoxide generator - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a carbon monoxide generating furnace that generates carbon monoxide by burning coke or the like inside.
[0002]
[Prior art]
A carbon monoxide generator having a substantially conical shape and connected to a hopper at the top via a charging pipe is known. Coke (combusted matter) is stored in the hopper, and a predetermined amount of coke is charged into the furnace through the charging pipe. The charged coke is deposited in the lower part of the furnace.
[0003]
On the other hand, a large number of oxygen nozzles for ejecting oxygen are arranged on the bottom plate of the furnace, and coke is combusted in the furnace by the oxygen ejected from the oxygen nozzles. The carbon dioxide generated by the combustion rises toward the exhaust pipe connected to the upper part of the furnace, but is reduced in the upper half of the furnace, and the reduced carbon monoxide is exhausted from the exhaust pipe.
[0004]
In this manner, in the carbon monoxide generating furnace, coke burns inside, resulting in a high temperature. If the furnace is not cooled, the furnace is damaged. Therefore, the furnace is cooled by covering the peripheral wall of the furnace with a jacket portion and circulating cooling water through the jacket portion. The jacket portion is formed by covering the peripheral wall of the furnace with an outer shell at a predetermined interval, and cooling the peripheral wall of the furnace by circulating cooling water in a space between the peripheral wall and the outer shell.
[0005]
Coke is charged into the furnace in several times, but when the coke burns, combustion soot accumulates in the furnace, so combustion in the furnace must be periodically stopped and the combustion soot in the furnace must be taken out. For this purpose, an opening is provided in the peripheral wall of the furnace, and the combustion soot in the furnace is taken out from this opening. Since this opening must communicate with the outside and the inside of the furnace, it is formed through the jacket.
[0006]
[Problems to be solved by the invention]
In the conventional carbon monoxide generating furnace, cold cooling water is injected into the jacket portion from below, and the cooling water is circulated from above the jacket portion to circulate the cooling water in the jacket portion. Therefore, the cooling water injected into the jacket part rises without being restricted in particular in the flow direction and eventually overflows. Therefore, if there is an obstacle in the jacket part, the cooling water is well around the obstacle. Not circulated.
[0007]
Since the opening is provided through the jacket, the opening becomes an obstacle, and there is a problem that cooling water is not circulated around the opening. In this way, if the cooling water is not circulated around the opening, the periphery of the opening is not cooled by other parts, so that distortion occurs between the opening and the other part, and cracks occur when the distortion increases. This may cause the cooling water to leak through the crack.
[0008]
Moreover, since the input pipe and the discharge pipe are connected to the upper part of the carbon monoxide generating furnace, the entire upper part cannot be covered with the jacket part, and the upper part is exposed. Then, the upper part is not sufficiently cooled, the temperature in the upper half of the furnace becomes particularly high, and there is a problem that carbon dioxide cannot be sufficiently reduced.
[0009]
Then, this invention makes it a subject to provide the carbon monoxide generator which can eliminate the said malfunction in view of said problem.
[0010]
[Means for Solving the Problems]
In order to solve the above problems, a carbon monoxide generating furnace according to the present invention is generated by burning a combustible material such as coke into the furnace from an input pipe connected to the upper portion and burning the combusted material in the lower portion of the furnace. A carbon monoxide generator that reduces carbon dioxide to carbon monoxide in the upper part of the furnace and discharges carbon monoxide from an exhaust pipe connected to the upper part, covering at least the outer peripheral surface of the carbon monoxide generator, In a carbon monoxide generator having a jacket portion through which cooling water is circulated, and an opening portion that penetrates the jacket portion and communicates with the inside of the furnace to take out the combustion soot inside the furnace, A nozzle for injecting cooling water is provided on a surface exposed in the jacket portion.
[0011]
By forcibly cooling the peripheral surface of the opening with the cooling water sprayed from the nozzle, the peripheral wall of the opening can be made the same as other parts even if the cooling water in the jacket does not flow to the peripheral wall of the opening. Can be cooled. The cooling water ejected from the nozzle is circulated together with the cooling water in the jacket portion.
[0012]
Since the upper part of the carbon monoxide generator is exposed from the jacket, the cooling water is discharged to the top of the exposed part, and the discharged cooling water flows down the jacket part along the upper surface. If this upper part is cooled, the upper part can also be cooled, and carbon dioxide can be reduced to carbon monoxide in the furnace.
[0013]
When the bottom plate of the carbon monoxide generator is not covered by the jacket and is cooled by being submerged in a water cup filled with cooling water, the cooling water in the jacket circulates around the opening. Even if not, the lower half of the opening is cooled by the cooling water of the water cup. In such a case, the nozzle may be arranged so as to inject cooling water into the upper half of the opening that is difficult to cool.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Referring to FIG. 1, reference numeral 1 denotes a carbon monoxide generator, which includes a substantially conical furnace body 2 and an outer shell 3 that covers the outer peripheral surface of the furnace body 2. A gap is formed between the furnace body 2 and the outer shell 3, and cooling water is circulated in the gap to form the jacket portion 4. An injection tube 41 is connected to the jacket portion, and cooling water is injected into the jacket portion 4 from the injection tube 41. The injected cooling water flows upward along the outer peripheral surface of the furnace body 2 and overflows through the overflow pipe 42. Therefore, cooling water is always circulated inside the jacket portion 4.
[0015]
A plurality of nozzles for ejecting oxygen are attached to the bottom plate 23 of the furnace body 2, and coke is introduced into the furnace from a charging pipe 25 connected to the upper portion 24 of the furnace body 2, and the coke is formed on the bottom plate 23. Burn. The carbon dioxide generated by this combustion is exhausted from an exhaust pipe 26 connected to the upper part 24, and is reduced in the upper half of the furnace while rising toward the exhaust pipe 26, and carbon monoxide. And discharged from the discharge pipe 26.
[0016]
Further, when the coke combustion soot accumulates, it is necessary to stop the combustion and take out the combustion soot from the furnace. Therefore, an opening 21 that communicates with the furnace body 2 is provided. The opening 21 is closed by a lid 22 during combustion. Reference numeral 5 denotes a cylindrical water cup with a bottom, in which cooling water is always flowing. The outside of the bottom plate 23 of the furnace body 2 is not covered with the outer shell 3, and the bottom plate 23 is cooled by submerging the bottom plate 23 in the cooling water in the water cup 5.
[0017]
By the way, the upper part 24 of the furnace main body 2 cannot be covered with the outer shell 3 because the input pipe 25 and the discharge pipe 26 are connected, so that the jacket part 4 cannot be formed. If the upper part 24 is not cooled, the temperature of the upper half part in the furnace body 24 becomes high and carbon dioxide cannot be sufficiently reduced, and unreduced carbon dioxide is discharged from the discharge pipe.
[0018]
Therefore, as shown in FIG. 2, the water discharge pipe 6 is provided to face the top of the upper part 24, and cooling water is discharged from the water discharge pipe 6 to cool the upper part 24. The cooling water discharged from the water discharge pipe 6 flows downward along the surface of the upper part 24 and cools the entire upper part 24. Then, the cooled cooling water is discharged from the overflow pipe 42 together with the cooling water in the jacket portion 4.
[0019]
On the other hand, since the opening 21 must communicate with the furnace body 2, the opening 21 must be provided through the jacket portion 4. Therefore, the opening 21 becomes an obstacle to the flow of cooling water in the jacket portion 4, and the flow of cooling water near the opening 21 is obstructed. Then, the opening 21 is not sufficiently cooled, the temperature difference from the other part becomes large, and distortion occurs between the opening 21 and the other part.
[0020]
Therefore, as shown in FIG. 3, the nozzle tube 7 facing the peripheral surface of the opening 21 is provided to mainly cool the upper half of the opening 21. The nozzle pipe 7 is attached through the outer shell 3, and the cooling water ejected from the nozzle pipe 7 collides with the peripheral surface of the opening 21 to cool the peripheral surface. In the present embodiment, three nozzle tubes 7 are provided, but more nozzle tubes may be provided.
[0021]
In addition, since the lower half part of the opening part 21 is cooled by the cooling water in the water cup 5, in this embodiment, the nozzle pipe for ejecting the cooling water was not provided in the lower half part of the opening part 21, but it is necessary. Accordingly, a nozzle pipe that ejects cooling water may be provided in the lower half of the opening 21.
[0022]
【The invention's effect】
As is apparent from the above description, the present invention can sufficiently cool the peripheral wall of the opening that communicates the inside and outside of the furnace, so that no distortion occurs between the opening and the other part.
[0023]
Moreover, since the upper part of the furnace is cooled, carbon dioxide generated in the furnace can be efficiently reduced to carbon monoxide.
[Brief description of the drawings]
FIG. 1 is a diagram showing a configuration of an embodiment of the present invention. FIG. 2 is a partially enlarged view showing an upper portion of a furnace. FIG. 3 is a cross-sectional view showing the periphery of an opening.
DESCRIPTION OF SYMBOLS 1 Carbon monoxide generating furnace 2 Furnace main body 3 Outer shell 4 Jacket part 5 Water cup 6 Water discharge pipe 7 Nozzle pipe 21 Opening part

Claims (3)

Combustion material such as coke is introduced into the furnace from the input pipe connected to the upper part, and carbon dioxide generated by burning the combustion substance in the lower part of the furnace is reduced to carbon monoxide in the upper part of the furnace and connected to the upper part. A carbon monoxide generator that discharges carbon monoxide from the discharged exhaust pipe, and includes a jacket portion that covers at least the outer peripheral surface of the carbon monoxide generator and circulates cooling water, and penetrates the jacket portion. In the carbon monoxide generator having an opening that communicates with the inside of the furnace and takes out the combustion soot inside the furnace, a nozzle for injecting cooling water is provided on the peripheral surface of the opening and exposed in the jacket portion. A carbon monoxide generator characterized by being provided. The upper part of the carbon monoxide generator is exposed from the jacket, and cooling water is discharged to the top of the exposed part, and the discharged cooling water flows down the upper part of the jacket through the upper surface. The carbon monoxide generator according to claim 1, wherein the furnace is cooled. The bottom plate of the carbon monoxide generating furnace is not covered with the jacket part, but is cooled by being submerged in a water cup filled with cooling water, and the nozzle for injecting the cooling water into the opening part The carbon monoxide generating furnace according to claim 1 or 2, wherein the carbon monoxide generating furnace is arranged to inject cooling water into the upper half.

Images