Coke oven brick gas channel repair sealing system and repair sealing method thereof

Abstract

The present application relates to a kind of coke oven brick gas channel repair sealing system and its repair sealing method, belong to coke oven maintenance technical field, specifically including the slurry pipe of being provided in the coke oven brick gas channel, the outside of the slurry pipe is equipped with temporary pressure grouting pipe, the outside diameter of the temporary pressure grouting pipe is smaller than the diameter of coke oven brick gas channel, sealing is arranged between the temporary pressure grouting pipe and slurry pipe, the bottom of the slurry pipe is connected with pressure grouting machine, the present application is simple in structure, reasonable in design, can be quickly and effectively completed the repair of broken brick gas channel, and repair efficiency is high.

Description

TECHNICAL FIELD

[0001] The present application relates to a coke oven brick gas channel repair sealing system and its repair sealing method, belonging to the technical field of coke oven maintenance. BACKGROUND

[0002] The coke oven brick gas channel is located in the main wall of the regenerator and is built by multiple gas pipe bricks, which is the key passage for coke oven gas entering the combustion chamber when the coke oven gas is heated.

[0003] The coke oven small flue is located in the lower part of the regenerator and plays a key role in introducing blast furnace gas, air and discharging hot waste gas. When the upward airflow enters cold air and cold blast furnace gas, the downward airflow collects hot waste gas, and the temperature of the alternating upward and downward airflow changes dramatically, and the pressure difference is also large. The masonry is in the most unfavorable operating condition, and coke oven gas often enters the small flue from the cracks through the damaged masonry brick gas channel before entering the combustion chamber, causing gas leakage and fire. Not only does it affect the normal heating of the coke oven, but also directly leads to the non-methane total hydrocarbon in the coke oven waste gas exceeding the standard, ultimately shortening the service life of the coke oven body.

[0004] After the coke oven brick gas channel is damaged, the traditional repair method mainly uses the method of grouting the brick gas channel from the lower nozzle and the method of inserting a pipe into the brick gas channel. For example, the Chinese utility model patent with the patent name of coke oven gas lower nozzle brick gas channel full grouting method grouting sealing system and method (CN111363563A) discloses a method of grouting the brick gas channel from the lower nozzle, which has the disadvantages of short grouting time, poor repair effect, and especially cannot effectively repair the severely damaged brick gas channel. The method of inserting a pipe into the brick gas channel can greatly reduce the aperture of the brick gas channel (some apertures are even reduced by more than half), which seriously affects the distribution of coke oven gas and thus affects the heating system of the coke oven production. SUMMARY

[0005] To solve the technical problems existing in the prior art, the present application provides a coke oven brick gas channel repair sealing system and its repair sealing method, which has the advantages of simple structure, reasonable design, fast and effective repair of damaged brick gas channels, and high repair efficiency.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present application is a coke oven brick gas channel repair sealing system, which comprises a coke oven brick gas channel, a slurry conveying pipe is arranged in the coke oven brick gas channel, a temporary pressure grouting pipe is sleeved outside the slurry conveying pipe, the outer diameter of the temporary pressure grouting pipe is smaller than the diameter of the coke oven brick gas channel, a seal is arranged between the temporary pressure grouting pipe and the slurry conveying pipe, and a pressure grouting machine is connected to the bottom of the slurry conveying pipe.

[0007] Preferably, the top nozzle of the slurry conveying pipe is in an arc structure, and the part of the slurry conveying pipe located outside the coke oven brick gas channel is in a right angle structure.

[0008] Preferably, the temporary pressure grouting pipe is mainly connected by several pipe sections, and the outer diameter of the temporary pressure grouting pipe is 10-20mm smaller than the diameter of the brick gas channel.

[0009] Preferably, the outer diameter of the slurry conveying pipe is 10-20mm smaller than the diameter of the temporary pressure grouting pipe, and the top of the slurry conveying pipe is 10-20mm higher than the top of the temporary pressure grouting pipe.

[0010] Preferably, the bottom of the slurry conveying pipe is further provided with an operating handle.

[0011] Preferably, the temporary pressure grouting pipe and the slurry conveying pipe are sealed by a sealing plug.

[0012] The repairing and sealing method of the repairing and sealing system of the coke oven brick gas channel repairing and sealing system comprises the following steps: selecting a proper number of pipe sections to form a temporary pressure grouting pipe according to the damaged position of the coke oven brick gas channel, sequentially installing the pipe sections on a slurry conveying pipe and performing sectional sealing, inserting the temporary pressure grouting pipe and the slurry conveying pipe into the coke oven brick gas channel, conveying slurry by a pressure grouting machine and the slurry conveying pipe, allowing the slurry to enter the gap between the temporary pressure grouting pipe and the coke oven brick gas channel, repairing the damaged part of the coke oven brick gas channel, and rotating the slurry conveying pipe to realize 360° omnidirectional repair.

[0013] Compared with the prior art, the present application has the following technical effects.

[0014] 1. The slurry conveying pipe is provided with a 90° angle at the top, which prevents the slurry machine from having too large pressure and directly sending the slurry into the inclined channel or directly into the bottom of the vertical channel, thereby affecting the normal heating of the coke oven.

[0015] 2. The present application can not only quickly and effectively seal the brick joint of the newly put into production coke oven brick gas channel and daily maintain the coke oven brick gas channel after being put into production, but also effectively repair the severely damaged brick gas channel.

[0016] 3. The present application can quickly and effectively repair the damaged brick gas channel, effectively reduce the leakage of coke oven gas in the brick gas channel, reduce the heat consumption of the coke oven, and prolong the service life of the coke oven. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The figure is a structural schematic diagram of the present application. DETAILED DESCRIPTION

[0018] In order to make the technical problems, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application, and are not used to limit the present application.

[0019] AsFigure 1 The coke oven brick gas channel repair sealing system is shown, and the coke oven brick gas channel repair sealing system comprises a coke oven brick gas channel 1, a slurry conveying pipe 2 is arranged in the coke oven brick gas channel, a temporary slurry pipe 3 is sleeved outside the slurry conveying pipe 2, the outer diameter of the temporary slurry pipe 3 is smaller than the diameter of the coke oven brick gas channel 1, a seal is arranged between the temporary slurry pipe 3 and the slurry conveying pipe 2, and a slurry press is connected to the bottom of the slurry conveying pipe 2.

[0020] The top nozzle of the slurry conveying pipe 2 is in an arc structure, so that the slurry conveying pipe can conveniently convey slurry to the surrounding, the part of the slurry conveying pipe 2 outside the coke oven brick gas channel is in a right angle structure, so that the slurry press can not directly send slurry into the inclined channel or directly into the bottom of the vertical channel, and the normal heating of the coke oven is not affected. The temporary slurry pipe 3 is mainly composed of a plurality of pipe sections, and the number of the temporary slurry pipe can be selected according to the position to be repaired. The outer diameter of the temporary slurry pipe 3 is 10-20 mm smaller than the diameter of the coke oven brick gas channel. The outer diameter of the slurry conveying pipe 2 is 10-20 mm smaller than the diameter of the temporary slurry pipe, and the top of the slurry conveying pipe 2 is 10-20 mm higher than the top of the temporary slurry pipe. The temporary slurry pipe and the slurry conveying pipe are sealed by a sealing plug. An operation handle 4 is further arranged at the bottom of the slurry conveying pipe 2, so that the slurry conveying pipe can be conveniently rotated.

[0021] The coke oven brick gas channel repair sealing system is shown, and the coke oven brick gas channel repair sealing system comprises a coke oven brick gas channel 1, a slurry conveying pipe 2 is arranged in the coke oven brick gas channel, a temporary slurry pipe 3 is sleeved outside the slurry conveying pipe 2, the outer diameter of the temporary slurry pipe 3 is smaller than the diameter of the coke oven brick gas channel 1, a seal is arranged between the temporary slurry pipe 3 and the slurry conveying pipe 2, and a slurry press is connected to the bottom of the slurry conveying pipe 2.

[0022] The above merely describes the preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the scope of the present application.

Claims

1. A repair and sealing system for coke oven brick gas ducts, comprising coke oven brick gas ducts, characterized in that: A grouting pipe is installed inside the coke oven brick gas duct. A temporary grouting pipe is fitted outside the grouting pipe. The outer diameter of the temporary grouting pipe is smaller than the diameter of the coke oven brick gas duct. A seal is provided between the temporary grouting pipe and the grouting pipe. A grouting machine is connected to the bottom of the grouting pipe. The temporary grouting pipe is mainly composed of several pipe sections connected together, and the outer diameter of the temporary grouting pipe is 10-20 mm smaller than the diameter of the brick gas duct. The outer diameter of the grout delivery pipe is 10-20 mm smaller than the diameter of the temporary grouting pipe, and the top of the grout delivery pipe is 10-20 mm higher than the top of the temporary grouting pipe.

2. The coke oven brick gas duct repair and sealing system according to claim 1, characterized in that: The top nozzle of the slurry delivery pipe has an arc-shaped structure, and the part of the slurry delivery pipe located outside the coke oven brick gas duct has a right-angle structure.

3. The coke oven brick gas duct repair and sealing system according to claim 1, characterized in that: An operating handle is also installed at the bottom of the grout delivery pipe.

4. The coke oven brick gas duct repair and sealing system according to claim 1, characterized in that: The temporary grouting pipe and the grout delivery pipe are sealed together by a sealing plug.

5. The repair and sealing method for the coke oven brick gas duct repair and sealing system as described in any one of claims 1-4, characterized in that: Select a suitable number of pipe sections to form a temporary grouting pipe based on the location of the damage to the coke oven brick gas duct. Install the pipe sections sequentially on the grout delivery pipe and seal them in sections. Insert the temporary grouting pipe and the grout delivery pipe together into the coke oven brick gas duct. Use a grouting machine and the grout delivery pipe to deliver grout. The grout enters the gap between the temporary grouting pipe and the coke oven brick gas duct. By rotating the grout delivery pipe, the damaged part of the coke oven brick gas duct can be repaired from all angles in 360°. After the grout is sintered, the repair is completed.

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