Coke pushing method and coke pusher machine

A technology for ejecting device and coke, which is applied in the direction of unloading device, furnace safety device, coke oven, etc., and can solve problems such as increased friction between lump coke and the side wall of the carbonization chamber, reduced load that cannot be ejected, and long time , to achieve the effects of easy management, suppression of damage, and low cost

Inactive Publication Date: 2011-06-08
JFE STEEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, in the techniques described in the above-mentioned Japanese Patent Laid-Open No. Sho 59-187082 and Japanese Patent Laid-Open No. 8-120278, the push-out load cannot be sufficiently reduced.
[0008] That is, in the techniques described in the above-mentioned Japanese Patent Publication No. Sho 59-187082 and Japanese Patent Publication No. 8-120278, both are attempts to reduce the frictional force between the lump coke and the bottom of the carbonization chamber, but the coke The main reason for the adhesion and the increase of the ejection load is not the friction between the lump coke and the bottom of the carbonization chamber, but when the lump coke is ejected by the ejection device, it is pushed out by the ram head of the ejection device. The block coke deforms (deformation), damages (breakdown) and extends to the horizontal direction perpendicular to the push-out direction, so that the friction between the block coke and the side wall of the carbonization chamber increases
[0009] And, USSR Patent No. 981340 does not use the push-out device that is the object of the present application, but makes the horizontal shovel installed on the material tank vibrate up and down to make the coke in the carbonization chamber collapse into the material tank, and take out the coke located in the furnace several times with the material tank. coke inside, it takes more time to unload the coke than the coke oven using the push-out device

Method used

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  • Coke pushing method and coke pusher machine
  • Coke pushing method and coke pusher machine
  • Coke pushing method and coke pusher machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0093] In order to study the effect of vibration, a vibration experiment was carried out. exist Figure 4 The small simulated coke oven 30 of 1m x 0.8m x 0.4m shown in the figure puts the lump coke 11 produced by dry distillation in advance in a small coke oven with the same shape and size as the simulated coke oven, and pushes it out by exerting force on the side wall 31 , While applying vibration (frequency 1-110Hz, acceleration level 0.3-12G, sine wave) from the end face with a test rod, it is pushed out at a certain speed, and the required force is measured. It is possible to vibrate 1 / 2 of the test rod 32 and vibrate with the vibrator 33 from the back. Figure 5 to Figure 8 An example showing the transition of pushing force. The horizontal axis represents time (since the speed is constant, it represents position), and the vertical axis represents the pushing force of the test rod. Wherein, for the acceleration level, the signal of the accelerometer 38 (Piezoelectric Ch...

Embodiment 2

[0098] As the example of the present invention, in the actual coke oven type coke oven, use figure 1 , figure 2 The coke pushing device 20 shown pushes out the coke while giving vibration to the lump in the above-mentioned order. However, the measurement of the acceleration level was performed in the same manner as in Example 1.

[0099] Its vibration frequency is 40Hz, and the acceleration level is about 1G. In addition, in the blended coal used in the examples, the weighted average volatile content per batch was 27.2%, the weighted average expansion pressure per batch was 4.3 kPa, and the mixing rate of high expansion pressure coal was 17%. On the other hand, as a comparative example, similarly to the conventional method, pushing was performed without vibrating the block focus.

[0100] The push-out load ratio (relative ratio) in the example of the present invention and the comparative example is as follows image 3 As shown, in the example of the present invention, the...

Embodiment 3

[0103] As an example of the present invention, in an actual coke oven, use figure 1 and figure 2 The coke pushing device 20 shown pushes out the coke while giving vibration to the lump in the above-mentioned order. However, the measurement of the acceleration level was performed in the same manner as in Example 1.

[0104] Its vibration frequency is 50Hz, and its acceleration level is about 2G. Wherein, in the mixed coal used in the embodiment, the weighted average volatile component of each batch varies in the range of 24% to 31%, and the weighted average expansion pressure of each batch varies in the range of 4.1kPa to 7.2kPa, The effect of the invention of this application is adjusted by changing the mixing ratio of the high expansion pressure coal in the range of 11% to 26%. At this time, the temperature at the bottom of the combustion chamber of the coke oven was 1240° C., and the total carbonization time was 18 to 19 hours.

[0105] Figure 9 It shows the relations...

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Abstract

Provided are a coke pushing method and a coke pusher machine which can appropriately reduce a pushing load when a lump coke is pushed out from a carbonization chamber, to thereby reduce the damage to a coke oven wall. A coke pushing method and a coke pusher machine, wherein a pushing face (22b) toward a lump coke (11) of a ram head (22) is vibrated in the pushing direction by a vibrator (23), to thereby carry out pushing while imparting vibration to the lump coke (11).

Description

technical field [0001] The present invention relates to a coke pushing method and a coke pusher machine for pushing coke generated from a carbonization chamber in a coke oven, and in particular to A coke pushing method and a coke pushing device which can reduce the pushing load, reduce the damage of the coke oven wall, and prolong the life-prolonging of the furnace wall. However, in the present invention, unless otherwise specified, a coke oven refers to a coke oven type coke oven. The coke oven type coke oven has a regenerator in the lower part of the furnace body, and a combustion chamber and a carbonization chamber are arranged alternately in the upper part. Background technique [0002] In a coke oven, when the coke (lump coke) produced by dry distillation of coal (coal) is pushed out from the carbonization chamber using a pushing device, coke sticking (sticking) occurs in the carbonization chamber , As a result, the push-out load increases, and a large force acts on t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10B33/10C10B41/02
CPCC10B45/00C10B33/10C10B41/02
Inventor 石野和成内田哲郎龟崎俊一福岛康博
Owner JFE STEEL CORP
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