Method for quickly dismounting dry quenching furnace during overhaul of dry quenching

Abstract

The invention discloses a method for quickly dismantling a dry quenching furnace during overhaul of dry quenching, which comprises the following steps: step 1, dismantling a coke discharging device of the dry quenching furnace, directly installing a rectangular chute at the bottom of the dry quenching furnace, and erecting a platform at the lower part of the chute for temporary stacking and cleaning; secondly, a disc crane is built in the dry quenching furnace, the height can be freely adjusted, and the dismantling time is not affected; step 3, arranging a group of small excavators on a lower chute platform, when falling waste bricks are piled up and do not move, performing mechanical operation to excavate the waste bricks in time, and arranging a group of drilling machines in the dry quenching furnace to destructively dismantle a wall body; and fourthly, bricks removed from the interior of the dry quenching furnace directly fall down, waste bricks in a chute at the bottom are dug out continuously through mechanical operation, the process can be conducted at the same time all day and night, and therefore the effect of rapidly removing the dry quenching furnace is achieved. The invention relates to the field of use of dry quenching furnaces, in particular to a method for quickly dismounting a dry quenching furnace during overhaul of dry quenching.

Description

Technical Field

[0001] The invention relates to the application field of dry quenching furnaces, and in particular to a method for quickly dismantling a dry quenching furnace during dry quenching overhaul. Background Art

[0002] The dry quenching furnace in the dry quenching industry generally needs an overhaul once every 10 years. The dry quenching furnace needs to be dismantled and rebuilt from top to bottom, including the pre-storage chamber, annular air duct, ramp, cooling chamber, and lower cone bucket. The traditional dismantling method is generally to install a chute at the manhole door of the cooling chamber, and then build a platform inside the dry quenching furnace to dismantle it layer by layer from top to bottom. When a certain amount of demolition is reached, the dismantling is stopped, and the bricks are manually placed on the ground through the chute at the manhole door of the cooling chamber. Generally, the demolition is done during the day shift, and the waste bricks are cleared away during the middle and evening shifts. It takes 10 days to dismantle the dry quenching furnace according to this process.

[0003] In order to shorten the overhaul time and reduce the time required for dismantling, this method is used to synchronize the time of dismantling and cleaning the waste bricks, optimize the dismantling process, and greatly shorten the time required for dismantling the CDQ furnace, so that the CDQ coke can be put into production more quickly. Every day of production ahead of schedule can not only reduce water quenching and improve the quality of coke, but also recover the waste heat of coke to generate steam and generate more electricity, greatly improving the economic efficiency. Summary of the invention

[0004] The method aims to synchronize the time of dismantling and removing waste bricks, optimize the dismantling process, and significantly shorten the time required for dismantling the dry quenching furnace.

[0005] In order to solve the above problems, the technical solution adopted by the present invention is as follows: The present invention is a method for quickly dismantling a dry quenching furnace during a dry quenching overhaul, comprising the following steps: Step 1: Remove the CDQ furnace coke discharge device and directly install a rectangular chute at the bottom of the CDQ furnace. Set up a platform at the bottom of the chute for temporary stacking and cleaning. Step 2: Build a disc crane inside the dry quenching furnace, which can freely adjust the height without affecting the dismantling time; Step 3: Arrange a group of small excavators on the lower chute platform. When the fallen waste bricks are piled up and cannot be moved, the mechanical operation will be carried out in time to dig them up. At the same time, arrange a group of drilling rigs inside the dry quenching furnace to destructively demolish the wall. Step 4: The bricks removed from the dry quenching furnace fall directly downwards, and the waste bricks in the bottom chute are continuously dug out through mechanical operations. This can be done at the same time day and night, thereby achieving the effect of quickly dismantling the dry quenching furnace.

[0006] Furthermore, the dry quenching furnace coke removal device in step 1 includes a vibrating feeder, a rotary sealing valve and an expansion joint thereof.

[0007] Furthermore, during the demolition in step 3, the wall should be broken up as much as possible to prevent large pieces from getting stuck in the chute.

[0008] Furthermore, in step 4, an excavator should be arranged on the ground for 24 hours to transport the discharged waste bricks in time to prevent accumulation from affecting the progress.

[0009] Preferably, after the overhaul cooling is completed, the coke should be discharged to the vicinity of the manhole door of the cooling chamber, and the coke should not be discharged further, mainly to protect the gas supply device.

[0010] The beneficial effects achieved by the present invention using the above structure are as follows: the dismantling time can be greatly shortened by carrying out the dismantling of the dry quenching furnace and the removal of waste bricks simultaneously, and mechanical operations are used to replace the original manual operations. The dismantling time originally planned to take 10 days can be completed within 4 days through this method. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 The present invention provides a dismantling flow chart of a method for quickly dismantling a dry quenching furnace during a dry quenching overhaul. DETAILED DESCRIPTION

[0012] As the instruction manual Figure 1 As shown, the present invention is a method for quickly dismantling a dry quenching furnace during a dry quenching overhaul, comprising the following steps: Step 1: Remove the CDQ furnace coke discharge device including the vibrating feeder, rotary sealing valve and expansion joint, and directly install a rectangular chute at the bottom of the CDQ furnace. Set up a platform at the bottom of the chute for temporary stacking and cleaning; Step 2: Build a disc crane inside the dry quenching furnace, which can freely adjust the height without affecting the dismantling time; Step 3: Arrange a group of small excavators on the lower chute platform. When the fallen waste bricks are piled up and cannot be moved, the mechanical operation will be carried out in time to dig them up. At the same time, arrange a group of drilling rigs inside the dry quenching furnace to destructively demolish the wall. When demolishing, the wall should be broken up as much as possible to prevent large pieces from blocking the chute; Step 4: The bricks removed from the dry quenching furnace fall directly downwards, and the waste bricks in the bottom chute are continuously dug out by mechanical operations. This can be done at the same time day and night, so as to achieve the effect of rapid dismantling of the dry quenching furnace. Excavators should be arranged on the ground for 24 hours to cooperate and transport the discharged waste bricks in time to prevent accumulation from affecting the progress.

[0013] It should be understood that although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A method for quickly dismantling a dry quenching furnace during a dry quenching overhaul, characterized in that: The steps include: Step 1: Remove the CDQ furnace coke discharge device and directly install a rectangular chute at the bottom of the CDQ furnace. Set up a platform at the bottom of the chute for temporary stacking and cleaning. Step 2: Build a disc crane inside the dry quenching furnace, which can freely adjust the height without affecting the dismantling time; Step 3: Arrange a group of small excavators on the lower chute platform. When the fallen waste bricks are piled up and cannot be moved, the mechanical operation will be carried out in time to dig them up. At the same time, arrange a group of drilling rigs inside the dry quenching furnace to destructively demolish the wall. Step 4: The bricks removed from the dry quenching furnace fall directly downwards, and the waste bricks in the bottom chute are continuously dug out through mechanical operations. This can be done at the same time day and night, thereby achieving the effect of quickly dismantling the dry quenching furnace.

2. The method for quickly dismantling a dry quenching furnace during a dry quenching overhaul according to claim 1, characterized in that: The dry quenching furnace coke removal device in step 1 includes a vibrating feeder, a rotary sealing valve and an expansion joint thereof.

3. The method for quickly dismantling a dry quenching furnace during a dry quenching overhaul according to claim 1, characterized in that: During the demolition in step 3, the wall should be broken up as much as possible to prevent large pieces from getting stuck in the chute.

4. The method for quickly dismantling a dry quenching furnace during a dry quenching overhaul according to claim 1, characterized in that: In step 4, an excavator should be arranged on the ground for 24 hours to transport the discharged waste bricks in time to prevent accumulation from affecting the progress.

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