WO2006070924A1 - Procede de poussee de coke et machine de poussee de coke - Google Patents

Procede de poussee de coke et machine de poussee de coke Download PDF

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Publication number
WO2006070924A1
WO2006070924A1 PCT/JP2005/024240 JP2005024240W WO2006070924A1 WO 2006070924 A1 WO2006070924 A1 WO 2006070924A1 JP 2005024240 W JP2005024240 W JP 2005024240W WO 2006070924 A1 WO2006070924 A1 WO 2006070924A1
Authority
WO
WIPO (PCT)
Prior art keywords
coke
vibration
extrusion
ram head
mass
Prior art date
Application number
PCT/JP2005/024240
Other languages
English (en)
Japanese (ja)
Inventor
Kazushige Ishino
Teturo Uchida
Shunichi Kamezaki
Yasuhiro Fukushima
Original Assignee
Jfe Steel Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jfe Steel Corporation filed Critical Jfe Steel Corporation
Priority to EP05844863A priority Critical patent/EP1832644B1/fr
Priority to CN2005800370169A priority patent/CN101048481B/zh
Publication of WO2006070924A1 publication Critical patent/WO2006070924A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B45/00—Other details
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B33/00—Discharging devices; Coke guides
    • C10B33/08—Pushers, e.g. rams
    • C10B33/10—Pushers, e.g. rams for horizontal chambers
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B41/00—Safety devices, e.g. signalling or controlling devices for use in the discharge of coke
    • C10B41/02—Safety devices, e.g. signalling or controlling devices for use in the discharge of coke for discharging coke

Definitions

  • the present invention relates to a coke pushing method and a coke pusher machine for extruding generated coke from a carbonization chamber in a coke oven.
  • a coke extrusion method that reduces the pushing load, reduces damage to the coke oven wall, and extends the life-prolonging of the furnace wall.
  • the present invention relates to a coke extrusion device.
  • the coke oven refers to a chamber-type coal-tease furnace.
  • a chamber-type coke oven has a heat storage chamber at the bottom of the furnace body, and combustion chambers and carbonization chambers are arranged alternately above it.
  • Soviet Patent No. 9 8 1 3 4 0 discloses a device for carrying out the coatas by causing the horizontal shovel to vibrate up and down to collapse the coatas in the carbonization chamber into the bucket.
  • the Soviet Patent No. 9 8 1 3 4 0 does not use the extrusion device that is the subject of this application, but causes the horizontal shovel attached to the bucket to vibrate up and down, causing the coke in the carbonization chamber to fall into the bucket.
  • the coke in the furnace is scooped out many times in the bucket, and it takes much time to carry out the coatas compared to the coke oven using an extrusion device.
  • the present invention has been made in view of the above circumstances, and when extruding a coke lump from a coking chamber of a coke oven, the extrusion load is accurately reduced to prevent damage to the coke oven wall. It is an object of the present invention to provide a coke extrusion method and a coke extrusion device that can be reduced. Disclosure of the invention
  • the present invention has the following features.
  • a cortas extrusion device that pushes the ramhead from the carbonization chamber by pressing the ramhead against the cotus mass in the coking chamber of the coke oven, and the ramhead vibration means for vibrating the ramhead
  • a coke extrusion device characterized by comprising:
  • the coke lump is pushed out from the carbonization chamber while applying vibration to the coatus lump, so that the friction between the coke lump and the carbonization chamber furnace wall causes static friction. From friction to kinetic friction, the coefficient of friction decreases, thereby reducing the extrusion load. As a result, damage to the furnace wall can be suppressed, operation delays caused by clogging can be avoided, and productivity can be increased.
  • the maximum extrusion load current does not exceed the control level, making it very easy to manage the blended coal.
  • low cost volatile coal, low volatile coal, or high expansion pressure coal can be used.
  • the “cotus mass” referred to in the present invention refers to the entire coke in the carbonization chamber, and does not mean only the block-shaped cotus mass in which the cotas are fixed.
  • the coatus cracks during the cooling process, but during the extrusion process, the coatus can come into close contact with each other and transmit vibration to the entire coatus, so there is no need for the block form to which the coatus is fixed.
  • FIG. 1 is a side view for explaining an embodiment of the present invention.
  • FIG. 2 is a perspective view of a coatus extrusion device according to an embodiment of the present invention.
  • Fig. 3 is a diagram showing the effect of the present invention.
  • Fig. 4 shows the vibration test equipment using a small coke oven of lmXO.8mX0.4m.
  • Fig. 5 Changes in pushing force when the excitation frequency is 40Hz and the excitation level is about 1G.
  • Fig. 6 Changes in pushing force when the excitation frequency is 50Hz and the excitation level is about 1G.
  • Fig. 7 Excitation frequency change at 60 Hz, excitation level approx. 1. 5G.
  • Fig. 8 Changes in push force when the excitation frequency is 30 Hz and the excitation level is about 0.2G.
  • Figure 9 Relationship between volatile matter (VM) of blended coal and maximum extrusion load current ratio.
  • Figure 10 Relationship between expansion pressure (kPa) of blended coal and maximum extrusion load current ratio.
  • Fig. 11 Shows the relationship between blending ratio of high expansion pressure coal and maximum extrusion load current ratio.
  • FIG. 1 is a side view for explaining an embodiment of the present invention
  • FIG. 2 is a perspective view of a coke extrusion device according to an embodiment of the present invention.
  • Fig. 1 10 is a coking oven carbonization chamber, in which a cotus mass 11 is generated.
  • reference numeral 20 denotes a coatus extrusion device according to an embodiment of the present invention, which includes a pushing ram 21 and a pushing ram drive unit (not shown).
  • Ram head 2 2 provided at the tip of the extrusion ram 2 1 and the pressing surface of the ram head 2 2 pressed against the coke lump 1 1 is the upper pressing surface 2 in the vertical direction.
  • the vibrator 2 When the push-out load (push-out load) exceeds a predetermined value (specifically, for example, when the load current value of the push-out ram drive device exceeds the predetermined value), the vibrator 2 The intermediate pressing surface 2 2 b is vibrated in the pushing direction by 3 and the ram head 2 2 is moved forward while applying vibration to the coke lump 1 1.
  • the detection of the push load is calculated from the load current value of the push ram drive device, for example.
  • the friction applied between the cotas lump 11 and the furnace wall of the carbonization chamber 10 changes from static friction to dynamic friction due to the vibration applied to the coke lump 1 1.
  • the coefficient of friction decreases, thereby reducing the extrusion load.
  • damage to the furnace wall can be suppressed, operation delays due to clogging can be avoided, and productivity can be increased.
  • vibration is applied to the coke block 11 and when the extrusion load becomes smaller than the predetermined value, the application of vibration is stopped.
  • the push load is usually maximized because the ram head 2 2 has moved forward 1 m to 1.5 m from the push start position. If the distance exceeds 1.5 m, you can stop applying vibration to the coke block 1 1. Further, vibration may always be applied from the start of extrusion to the end of extrusion.
  • Vibration form of the ram head of the present invention can be either the vertical direction or the extrusion direction of the furnace as long as vibration can be applied to the entire coke mass.
  • it is difficult to reliably transmit vibration from the ram head to the entire coke mass for example, vibrations mainly in the vertical direction of the furnace.
  • a plurality of protrusions are provided on the ram head to create a coke mass. It is necessary to devise such as piercing the protrusion.
  • the vibration direction of the ram head of the present invention is the vibration direction including the vibration component of the push-out direction, and the structure of the ram head of the present invention can be simplified. This is preferable because the drive capacity of the vibrator can be reduced. More preferably, a vibration direction mainly including a vibration component in the extrusion direction is more preferable. More specifically, the vibration according to the present invention is preferably applied in parallel with the extrusion direction, but may be applied in an obliquely upward direction or a diagonally downward direction.
  • the vibrator 2 3 is connected only to the intermediate pressing surface 2 2 b, but the vibrator is also connected to the upper pressing surface 2 2 a and the lower pressing surface 2 2 c. Then, one or more pressing surfaces to be vibrated may be appropriately selected and vibrated. -In this embodiment, the pressing surface of the ram head 2 2 is divided into three parts, and the pressing force of the intermediate pressing surface 2 2 b of the ram head 2 2 b is maximized as required. Select the number to divide and the ratio of the pressing area. Of course, the pressing surface of the ram head 2 2 may not be divided.
  • the vibration frequency band is preferably a single frequency of 2 Hz to 100 Hz, but two or more types of frequency components in this band may be included. Regular vibration or irregular vibration may be used.
  • the vibration frequency band exceeds 10 OHz, the vibration amplitude decreases, so the vibration effect on the coke mass decreases. More preferably, it is 6 OHz or less.
  • the frequency band of vibration is less than 2 Hz, it is necessary to increase the energy input to the shaker in order to obtain sufficient acceleration, The effect of vibration is likely to be insufficient. In particular, a force of 30 Hz to 60 Hz is preferable.
  • the vibration waveform is preferably a device that vibrates the ram head with a waveform including one or more types of sine waves. Further, it is not necessarily a sine wave, and a waveform such as a triangular wave, a rectangular wave, a continuous inpulse wave, or a mixed waveform thereof may be used.
  • the vibration acceleration level should be at least 0.5 G to give effective vibration to the coke mass.
  • An acceleration level of 1 G or higher is even more preferable.
  • a force of 10 G or less is preferable.
  • an accelerometer attached to the vibration part of the test ram
  • B & K's Piezoelectric Charge Accelerometer model number Type 4383 is converted by a charge amplifier (B & K's Charge Amplifier model number Type 2635) and recorded on a personal computer.
  • the structure of the vibrator used in the present invention is preferably a device that can arbitrarily adjust the frequency and acceleration level, and a motor, hydraulic pressure, hydraulic pressure, or the like can be adopted as the driving method.
  • a vibration mechanism that can be mounted in a narrow space from a high temperature load, for example, a Pibro hammer or an air hammer can be used.
  • Volatility of blended coal that can be applied to the present invention Applicable to coal blends of 9 mass% or more, or 25 mass% or less.
  • the volatile content of blended coal brands is measured and controlled by sampling coal in units of lots such as coal mines and ships. In consideration of the volatile content of each lot before charging into the coke oven, the amount of coal input in each lot is blended. The weighted average volatile content was obtained by multiplying the input amount of each mouth by the volatile content and dividing by the total input amount.
  • the analysis of volatile matter in each lot conforms to JISM 8812.
  • the sample in a crucible with a lid to avoid contact with air, determine the mass fraction of the sample for heating loss when heated at 900 ° C for 7 minutes, and subtract the moisture measured at the same time to remove the volatile content.
  • the volatile content of blended coal reaches 29 mass% or more, the amount of carbon deposition increases, and the carbon attached to the furnace wall grows. It becomes difficult to perform proper extrusion.
  • the cake can be extruded without staying in contact with the carbon and the coatus cake.
  • the maximum load average volatile content of the blended coal lot applicable to the present invention is usually 40 mass% since the maximum volatile content of the coking coal brand is 40 mass S %.
  • the vibration extruder of the present invention when the volatile content of coal blend is less than 25 mass%, the gap between the furnace wall and the coke cake becomes small, and if there is a convex part on the furnace wall, the convex part and the coke cake come into contact with each other, making it impossible to perform a smooth extrusion. .
  • the minimum value of the load average volatile content of each blended coal spout applicable to the present invention is usually 15 raass% since the minimum volatile content of the coking coal brand is 15 mass%.
  • the blended coal used in the present invention can be applied even when the load-average expansion pressure of each blended coal spit, which could not be applied conventionally, is 6 kPa or more.
  • the expansion pressure of each blended coal outlet is sampled and controlled by sampling the coal in units of lots such as each coal mine and every ship.
  • the amount of coal input for each lot is blended in consideration of the expansion pressure for each lot before being charged into the coke oven.
  • the weighted average expansion pressure was calculated by multiplying the input amount of each lot by the expansion pressure and dividing by the total input amount.
  • the expansion pressure is measured by adjusting the coal to l-3 ram, putting it in a crucible with a diameter of 50 mm and a height of 70 mm, and adjusting the bulk density to 775 kg / m 3 , covering the crucible and covering the differential pressure gauge with the coal. Insert inside. Raise the temperature of the crucible to 1000 ° C at 4 ° C / min and read the maximum value of the differential pressure during the temperature raising process.
  • the expansion pressure of blended coal is high, the shrinkage during dry distillation is reduced and the gap between the furnace wall and the coke cake is reduced. If there is a convex part on the furnace wall, the convex part and the coke cake come into contact with each other, and a smooth extrusion is possible. Disappear. By using the vibratory extruder of the present invention, the friction between the convex part and the coatus cake is reduced, and the extrusion is performed without the cake remaining. It becomes possible.
  • the maximum value of the weight average expansion pressure of the blended coal brand applicable to the present invention is normally 9 kPa because the maximum expansion pressure of the coking coal brand is 9 kPa.
  • the blended coal used in the present invention has a blending ratio of high expansion pressure coal that cannot be applied conventionally, 2 Omassy. It is applicable also to the above.
  • FIG. 4 An excitation experiment was conducted to examine the effect of vibration.
  • a small coke oven 30 of IraXO.8mX0.'4m shown in Fig. 4 was charged with the cotas lump 11 produced in advance in a small coke oven of the same size as the simulated coke oven, and applied to the side wall 31.
  • a force was applied and pressed, and vibration was applied from the end face with a test ram (frequency 1 to 1 10 Hz, acceleration level 0.3 to 12 G, sine wave), and the required force was measured.
  • Half of the test ram 32 was vibrated, and was vibrated from the back with the vibrator 33.
  • Figures 5 to 8 show examples of the pushing force transition.
  • the horizontal axis represents time (the position is indicated because the speed is constant), and the vertical axis represents the test ram force.
  • the acceleration level is converted by the charge amplifier 39 (B & K Charge Amplifier model Type 2635) from the acceleration pickup 38 (B & K Piezoelectric Charge Accelerometer model number 4383) attached to the excitation part of the test ram. And recorded it on a computer.
  • the pushing force was measured with a load cell 34.
  • a vibration motor high-speed rotation of an eccentric weight
  • the force became almost constant, and when the vibration was turned on, the pushing force decreased to about 1/2. It can be seen that when the vibration is turned off, the level returns to the level after the start. From this, it can be seen that the pushing force can be reduced to about 1/2 by vibration.
  • the excitation frequency at this time was 40 Hz, and the excitation level was about 1G.
  • Fig. 6 shows an excitation frequency of 50 Hz and an acceleration level of about 1 G.
  • Fig. 7 shows an excitation frequency of 60 Hz and an acceleration level of about 1.5 G. As a result, the pushing force could be reduced to about 1/2.
  • the pushing force can be reduced.
  • the pushing force was greatly reduced when the excitation frequency was 30-60 Hz.
  • the excitation frequency was 30 Hz and the acceleration level was about 0.2 G.
  • the acceleration level was outside the scope of the present invention and was small, the pushing force could not be reduced. Note that even when the excitation frequency outside the scope of the present invention was 1 Hz and the acceleration level was about 1 G, the pushing force did not drop significantly during the process. As a comparative example, there was no significant drop in the pushing force in the middle of the force in which the experiment was not performed.
  • the coke extrusion apparatus 20 shown in FIGS. 1 and 2 was used to perform extrusion while applying vibration to the coke mass.
  • the acceleration level was measured in the same manner as in Example 1.
  • the vibration frequency was 40Hz and the acceleration level was 1G.
  • the blended coal used in the examples had a load average volatile content of 27.2% for each lot, a load average expansion pressure for each lot of 4.3 kPa, and a high expansion pressure coal blending ratio. 17%.
  • the coke lump was extruded without applying vibration as before.
  • the extrusion load ratio (relative ratio) in the present invention example and the comparative example is shown in FIG. 3.
  • the maximum extrusion load ratio is significantly reduced compared to the comparative example.
  • the extrusion load ratio is shown as a relative ratio with the peak value of the extrusion load of the comparative example being 1.0.
  • extrusion was performed in an actual coke oven using the coke extrusion apparatus 20 shown in FIG. 1 and FIG.
  • the acceleration level was measured in the same manner as in Example 1.
  • the vibration frequency was 50 Hz and the acceleration level was 2G.
  • the blended coal used in this example had a load average volatile content of 24% to 31% for each lot, and a load average expansion pressure for each lot of 4. l kPa to 7.2 kPa, high expansion.
  • the effect of the present invention was examined by changing the blending ratio of the compressed coal in the range of 11% to 26%.
  • the temperature at the bottom of the combustion chamber of the coke oven at this time is 1240 ° C, and the total carbonization time is 18-19 hours.
  • Figure 9 shows the volatile matter (VM) and the maximum extrusion load current ratio (relative ratio) when the average expansion pressure for each lot is 4.5 kPa and the blending ratio of the high expansion pressure coal is 15%. ) Is shown.
  • Figure 10 shows the blended coal expansion pressure (kPa) and maximum extrusion load current when the load average volatile content for each lot is 27.3% and the high expansion pressure coal blending ratio is 15%. The relationship of the ratio (contrast) is shown.
  • Figure 11 shows the blending ratio of high expansion pressure coal in the case where the load average volatile content per lot is 27.3% and the load average expansion pressure per mouth is 5.1 kPa.
  • the maximum extrusion load current ratio (relative ratio).
  • the maximum extrusion load current ratio is shown as a relative ratio with a management value (management level) of 1.00.
  • the maximum extrusion load current exceeds the control level regardless of the volatile content of the blended coal, the expansion pressure of the blended coal, and the blending amount of the high expansion pressure coal. Because there is no, management of blended coal is very easy. In addition, low cost volatile coal, low volatile coal, or high expansion pressure coal can be used, resulting in a large cost advantage.
  • the Cotas mass is pushed out of the carbonization chamber while applying vibration to the coke mass, so that the friction between the Cotas mass and the chamber wall changes from static friction to dynamic friction.
  • the coefficient of friction is lowered, thereby reducing the extrusion load.
  • damage to the furnace wall can be suppressed, operation delays due to clogging can be avoided, and productivity can be increased.
  • the maximum extrusion load current does not exceed the control level, making it very easy to manage the blended coal.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Coke Industry (AREA)

Abstract

La présente invention concerne un procédé de poussée de coke et une machine de poussée de coke qui peuvent réduire de manière appropriée une charge de poussée quand une motte de coke est poussée hors d’une chambre de carbonisation permettant ainsi de réduire le dommage à une paroi de four à coke. Un procédé de poussée de coke et une machine de poussée de coke dans laquelle une face de poussée (22b) vers une motte de coke (11) d’une tête de bélier (22) vibre dans la direction de poussée par l’action d’un vibrateur (23), pour ainsi réaliser la poussée tout en communiquant une vibration à la motte de coke (11).
PCT/JP2005/024240 2004-12-28 2005-12-27 Procede de poussee de coke et machine de poussee de coke WO2006070924A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP05844863A EP1832644B1 (fr) 2004-12-28 2005-12-27 Procede de poussee de coke et machine de poussee de coke
CN2005800370169A CN101048481B (zh) 2004-12-28 2005-12-27 焦炭推出方法以及焦炭推出装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004379516 2004-12-28
JP2004-379516 2004-12-28

Publications (1)

Publication Number Publication Date
WO2006070924A1 true WO2006070924A1 (fr) 2006-07-06

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PCT/JP2005/024240 WO2006070924A1 (fr) 2004-12-28 2005-12-27 Procede de poussee de coke et machine de poussee de coke

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EP (1) EP1832644B1 (fr)
KR (1) KR100893468B1 (fr)
CN (1) CN101048481B (fr)
TW (1) TWI299359B (fr)
WO (1) WO2006070924A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111151089A (zh) * 2019-12-25 2020-05-15 太原重工股份有限公司 焦炉除尘系统

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101453659B1 (ko) 2013-03-18 2014-10-22 주식회사 포스코 압출기 레벨러빔 타격장치
KR101710093B1 (ko) 2015-08-21 2017-02-24 주식회사 포스코 코크스 막힘을 방지하는 코크스 오븐 쇼블 장치
JP6530090B1 (ja) * 2018-02-09 2019-06-12 住友重機械プロセス機器株式会社 ガイド車

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0726266A (ja) * 1993-07-08 1995-01-27 Kawasaki Steel Corp コークス炉の炭化室窯口前コークス排出装置
JP2003172606A (ja) * 2001-12-10 2003-06-20 Nkk Corp コークス押出ラムの先端位置指示装置、及びコークス押出しラムの先端位置検出方法

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Publication number Priority date Publication date Assignee Title
JP4123357B2 (ja) * 2001-11-15 2008-07-23 Ｊｆｅスチール株式会社 コークス押出し機およびコークス押出し方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0726266A (ja) * 1993-07-08 1995-01-27 Kawasaki Steel Corp コークス炉の炭化室窯口前コークス排出装置
JP2003172606A (ja) * 2001-12-10 2003-06-20 Nkk Corp コークス押出ラムの先端位置指示装置、及びコークス押出しラムの先端位置検出方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP1832644A4 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111151089A (zh) * 2019-12-25 2020-05-15 太原重工股份有限公司 焦炉除尘系统
CN111151089B (zh) * 2019-12-25 2022-03-29 太原重工股份有限公司 焦炉除尘系统

Also Published As

Publication number Publication date
KR20070072896A (ko) 2007-07-06
CN101048481B (zh) 2011-06-08
TW200641108A (en) 2006-12-01
CN101048481A (zh) 2007-10-03
EP1832644A1 (fr) 2007-09-12
KR100893468B1 (ko) 2009-04-17
TWI299359B (en) 2008-08-01
EP1832644A4 (fr) 2011-03-02
EP1832644B1 (fr) 2012-04-25

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