JPS59129386A - Dry-type extinguishing equipment for coke - Google Patents

Abstract

PURPOSE:To contrive to recover sensible heat of red hot coke and enable to obtain a stable steam, by providing a dry-type extinguishing equipment for coke with a coke burner for continuously introducing red hot coke and cold coke to cause the coke to exchange heat with a gas. CONSTITUTION:An inert gas heated by exchanging heat with red hot coke 9 in the dry-type extinguishing equipment 1 flows into a chamber 6. On the other hand, in the coke combustor 18, combustion air is passed upward through two coke layers consisting of red hot coke 9A and cold coke 21. When passing through the red hot coke 9A, the inert gas deprives the coke 9A of sensible heat, and simultaneously, the coke 9A is burned with a portion of oxygen in air to become a high-temperature gas. When the high-temperature gas reaches the cold coke 21, the latter is heated by the gas to become high-temperature coke, which is burned with residual oxygen in the high-temperature gas. The high-temperature gas and the inert gas are mixed with each other through ducts 23, 24, and the mixture flows into an unburnt component reburning device 25.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to dry coke digestion equipment for the purpose of recovering sensible heat from red-hot coke from a coke oven.

Generally, a dry digester is provided to recover sensible heat from red-hot coke from a coke oven. This dry digester has an endless belt (hereinafter referred to as a grate) in the form of a lattice at its bottom. Red-hot coke from a coke oven is continuously introduced onto this grate, and inert gas is introduced from below. distribute it. This inert gas and the red-hot coke are heat exchanged to obtain a high-temperature inert gas. Then, low-temperature inert gas is introduced below the grate again and the same operation is repeated to recover sensible heat from the red-hot coke. And the recovered high-temperature inert gas is, for example, waste heat? Introduced to Ira.

Waste heat? In IRA, υ steam is generated by heat exchange with this high-temperature inert gas, and this steam is used for power generation, etc.

According to the above configuration, for example, in the case of a small-scale dry digestion facility, the amount of steam obtained from the recovered high-temperature inert gas is small, so there is a fear that economical power generation may not be possible.

The present invention has been made based on the above points, and an object thereof is to provide a dry coke digestion equipment capable of obtaining a stable amount of heat and thereby a stable amount of steam.

That is, the coke dry coke extinguishing equipment according to the present invention includes a dry extinguisher that continuously introduces red hot coke and exchanges heat between the red hot coke and gas to obtain high-temperature gas, and a dry coke digester that continuously introduces red hot coke and cold coke. A coke combustion device that exchanges heat content with Shiko's red-hot coke and cold coke and gas to obtain high-temperature gas, and a piping system that mixes the high-temperature gas obtained from the dry digestion device and the high-temperature gas obtained from the coke combustion device. The configuration is equipped with the following.

In addition to the conventional dry digester, a coke combustion device is installed, and this combustion device burns red hot coke and cold coke from a coke oven to generate high-temperature gas. The high-temperature gas Y is mixed with the high-temperature gas generated from the dry digester through a piping system and is supplied to, for example, a waste heat gain.

Therefore, the amount of high-temperature gas generated is stabilized, thereby making it possible to obtain a stable amount of steam and perform stable and economical power generation.

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. FIG. 1 is a system diagram showing a schematic configuration of coke dry digestion equipment according to the present invention. The symbol in the figure indicates a dry digester. This dry-type digestion equipment has a grate 2 at its bottom, and a hopper 3 is attached to one end of the grate 2. On this grate 2, rooms 6, 7°8 are formed, which are partitioned by partition plates 4 and 5, respectively. Red-hot coke 9 from a coke oven (not shown) is placed on grate 2 through piping 10 and a hole.
! 3, is moved rightward in the figure by the horizontal movement of the grate 2, and is discharged through the discharge port 2Ak. The above red hot coke 9 has a particle size of 25
The particle size is relatively large, more than 500 yen. Also, 11 in the figure
．． 12.13 and 14 indicate blowers. This blower 1
1.12 and 13 are configured to cause a cooling inert gas to flow from below the grate 2 to above.

That is, inert gas is supplied from the blower 11 from below the grate 2 at a position corresponding to the room 8v.

The supplied inert gas is red hot coke 9 on Grate 2.
It exchanges heat with the air and becomes high temperature, causing a lot of people in room 8. Then, the fan 13 moves the grate 2 to the position corresponding to the room 7.
Red-hot coke 9 is fed into grate 2 from below and shattered again.
It exchanges heat with the water and flows into Nagoya 7. The high-temperature inert gas flowing into the chamber 7 is sent into the grate 2 from below the grate 2 at a position corresponding to the room 6 by a blower 12, exchanges heat with the red hot coke 9 again, and is sent into the room 6. Further, a part of the high-temperature inert gas that has flowed into the room 7 is configured to flow into a coal drying device 16 via a pipe 15 and further to be exhausted into the atmosphere via a dehumidifying device 17.

Further, a part of the air is blown into the lower part of the grate 2 at the room 8 position by the blower 14.

In addition, the reference numeral in the figure indicates a coke combustion device.

Red-hot coke 9A is introduced into this coke combustion device 18 via a pipe I9. And at the same time, piping 20
The structure is such that cold coke 21 is fed through. The above-mentioned red hot coke 9A is a relatively small coke with a particle size of 25 or less generated during the coke manufacturing process, and is of little use and tends to be in excess. The cold coke 21 also has a relatively small particle size of 25 g or less. A blower 22 is connected to the coke combustion device 18 to supply air for combustion.

That is, the configuration is such that high temperature gas is obtained by exchanging heat between red hot coke 9 and cold coke 21 and air. This high-temperature gas is mixed with the high-temperature inert gas that has flowed into the room 6 through the duct 23, and is sent to the unburned component re-combustion device 25 via the pipe 24, and further sent to the waste heat mailer 26. .

Then, it is released into the atmosphere via the dust remover 27, and a part of it is sent to the grate 2 in the room 8 position by the blower 11.
It is configured to be fed downward.

Red hot coke 9A uses cold coke (stored room temperature coke) 21 in addition to red hot coke 9A.
This is because the amount generated varies depending on the manufacturing conditions and is not always generated in a stable amount. Therefore, it is not possible to obtain stable and economical power generation using red hot coke 9A alone.

The coke combustion device 18 is constructed as shown in FIG. In the figure, 28 and 29 indicate no. An endless grate 30 is attached to the pulleys 28 and 29. Therefore, the rotation of the pulleys 28 and 29 causes the grate 30 to rotate in the right direction in FIG.

Further, numeral 31 in the figure indicates an upper hood. This upper hood 31
A lower hood 32 is provided below, sandwiching the above-mentioned grate 30, and this lower hood 32 includes an air duct 3.
3 is connected.

This air duct 3 is connected to the cooling blower 22 . That is, the combustion air supplied from the blower 22 is supplied into the space surrounded by the lower hood 32 and the grate 30 through the air duct 33. A hot coke charging hole 434 and a cold coke charging hopper 35 are provided at one end of the grate 30, respectively. The red hot coke 9A supplied from the pipe 19 is introduced onto the grate 30 via the red hot coke charging hole/4' 34. Also, piping 2
The cold coke 2 supplied from 0 is the above cold coke 2/'? This is a configuration in which the red hot coke 9A is introduced onto the grate 30 via the coke 35. Therefore, the structure is such that the coke moves rightward in the figure in a two-layer state with the red hot coke 9A and the cold coke 21. The combustion air introduced into the space surrounded by the lower hood 32 and the grate 30 flows upward, exchanging heat with the red hot coke 9A and the cold coke 2, raising the temperature and producing high-temperature gas. and flows into the upper hood 31. The inflowing high-temperature gas flows out through the duct 23 connected to the upper hood 31.

According to the above configuration, the inert gas heated by exchanging heat with the red-hot coke 9 in the dry digester flows into the room 6. On the other hand, in the coke combustion device 18, air for combustion passes from below the two coke layers consisting of the red-hot coke 9A and the cold coke 21. When passing through the red hot coke 9A, the sensible heat of the red hot coke 9A is taken away, and at the same time some of the oxygen in the air makes the red hot coke 9A
burns and produces high-temperature gas (e.g. N2,02.C01CO
2nd prize). When this high-temperature gas reaches the cold coke 21, the cold coke 21 is heated by the high-temperature gas and becomes high-temperature coke.9 It is combusted by the remaining oxygen in the high-temperature gas. This results in hot gas.

This high temperature gas and the inert gas mix through ducts 23 and 24 and flow into an unburnt component reburning device 25 . Then, waste heat is introduced from this unburned component reburning device t25 to the slag 26, where it exchanges heat with, for example, water to generate steam.

This steam is used for power generation. The mixed gas of high-temperature gas and inert gas cooled by the waste heat boiler 26 is released into the atmosphere via the dehumidifier 27, and a part of it is transferred again to the lower part of the dry digester grate 2 by the blower 11. be done.

That is, according to the coke dry digestion equipment of this embodiment, red hot coke 9A and cold coke 21 are combusted in coke combustion device 18 using high temperature inert gas obtained by sensible heat recovery of red hot coke 9 as in the conventional case. The resulting high-temperature gas is mixed into a waste heat boiler 26 as a mixed gas.
Since the amount of heat is supplied to the waste heat mailer 26, a quantitatively stable amount of heat can be sent to the waste heat mailer 26. Ira 26
The amount of steam generated is also stable, allowing for stable and economical power generation.

The red hot coke 9A used in the trench coke combustion apparatus is generated during the coke manufacturing process and has not had many uses in the past, and is in excess in quantity, so it is extremely effective in that sense as well.

As detailed above, the coke dry extinguisher according to the present invention comprises a dry extinguisher that continuously introduces red-hot coke and exchanges heat between the red-hot coke and gas to obtain high-temperature gas; and a coke combustion device in which hot gas is submerged by continuously introducing cold coke and exchanging heat between the red hot coke and cold coke and gas, and the high temperature gas obtained from the dry digestion device and the coke combustion device. This configuration includes a piping system for mixing high-temperature gases.

In other words, a coke combustion bag # is provided in addition to the conventional dry digester, and the red hot coke and cold coke from the coke oven are burned in this combustion device to generate high temperature gas. This high-temperature gas is then mixed with the high-temperature gas generated from the dry digester through a piping system, such as waste heat. It is configured to supply to other people.

Therefore, the amount of high-temperature gas generated is stabilized, and thereby a stable amount of steam can be obtained, resulting in stable and economical power generation, which has great effects.

[Brief explanation of the drawing]

1 and 2 are diagrams showing one embodiment of the present invention, in which FIG. 1 is a schematic system diagram of a coke dry digestion equipment, and FIG. 2 is a diagram showing the configuration of a coke combustion apparatus. Engineering: Dry digestion equipment, 9: Red-hot coke, 9A.
...Red m coke, 2si J-...Coke combustion equipment,
21...cold coke, 23.24...duct. Applicant's sub-agent Patent attorney Takehiko Suzue Figure 2■, Case indication Patent application No. 1988-1910 2, Title of invention Coke dry extinguishing equipment 3, Patent applicant related to the ministry case to amend ( 620) Mitsubishi Heavy Industries, Ltd. 4, successor administrator 5, corrected as voluntary amendment. (2) The scope of claims in the specification is corrected as shown in the attached sheet. (3) Details page 2nd page line 6, 3rd page 3rd line to 4th line, same page 10th line, same page 11th line to 12th line Month, 4th page line 13 , page 10, lines 13 to 14, month, 1st] negative line 9 and 2nd negative line 11, 1 dry fire extinguishing equipment" is corrected to "dry fire extinguishing equipment (++f+ J). (4 ) Specification 2nd negative line 9, Dosei line 10, page 3, line 14, same page, line 17, page 4, line 1, same page, line 5, same page Line 14, line 15 of the same page, page 9, line 9
Line, page 10, line 11 to line 12 Month, 10th, 11th
line, page 15, line 18, page 18, month, page 12, line 2
"Dry fire extinguishing system" in the 14th line of the same page is corrected to "dry fire extinguishing system." 2. Scope of Claims (1) A dry fire extinguishing system that continuously introduces red hot coke and heat exchanges the red hot coke and gas to obtain high temperature gas; A coke combustion device that exchanges heat between red hot coke and cold coke and gas to obtain high temperature gas, and a piping system that mixes the high temperature gas obtained from the dry fire extinguishing device and the high temperature gas obtained from the coke combustion device. Coke dry extinguishing equipment.

Claims (2)

[Claims] (1) A dry extinguisher that continuously introduces red hot coke gold and exchanges total heat with this red hot coke and gas to obtain high temperature gas; and a piping system for mixing the high-temperature gas obtained from the dry digestion device and the high-temperature gas obtained from the coke combustion device. Coke dry digestion equipment. (2) The above-mentioned coke combustion device is equipped with a pair of zollies and an endless belt attached to the pair of nollies, and red-hot coke is continuously introduced onto the endless belt. The coke drying process according to claim 1, characterized in that cold coke is completely continuously introduced into the top, and gas is passed from below to burn the red-hot coke and cold coke to obtain high-temperature gas.