Coke side oven door structure of tamping coke oven and matched crushed coal cleaning device

Abstract

The invention relates to a coke side furnace door structure of a tamping coke oven and a matched crushed coal cleaning device. The coke side furnace door structure comprises a furnace door body and a furnace door lining, the small furnace door is cleaned; a mounting door opening is formed in the lower part of the furnace door body, and the small cleaning furnace door is movably arranged in the mounting door opening; the small sweeping furnace door is composed of a small furnace door body and a small furnace door lining, the small furnace door body is a metal structural part, and the small furnace door lining is arranged in the small furnace door body and is a refractory material lining. The small cleaning oven door is arranged at the lower part of the coke side oven door of the tamping coke oven, so that crushed coal falling at the coke side oven door can be cleaned through the small cleaning oven door under the condition that the coke side oven door is closed, and the coke oven door is prevented from being deformed due to extrusion; a crushed coal cleaning device can be adopted in the crushed coal cleaning process in a matched mode, raw gas leakage is prevented from polluting the environment, and the device has the advantages of being convenient to operate, good in sealing performance, long in service life, beneficial to environment protection and the like.

Description

Technical Field

[0001] The invention relates to the technical field of coke ovens, in particular to a coke side oven door structure of a ramming coke oven and a matching crushed coal cleaning device. Background Art

[0002] A coke oven is a device that converts coal into coke in an airtight environment. It is constructed of internal refractory materials and external process ironwork. During the coke oven production process, the coke oven body requires protective ironwork to prevent deformation and shorten the life of the coke oven. The oven door is the most important component of the coke oven protective ironwork system. During each coking cycle, the coke oven door is removed and reattached once. Before pushing coke, the door is removed from the door frame by a coke pusher (or coke interceptor). After pushing coke, the door is reattached to the door frame. The coke oven door not only protects the oven body but, more importantly, also seals it, preventing raw gas from leaking.

[0003] When charging a tamping coke oven, the pulverized coal is first formed into briquettes in a tamping device outside the oven. A coal support plate then delivers the tamped briquettes from the oven side into the carbonization chamber. During this process, the oven door is open and the coke door is closed. During the loading process, due to time constraints and the tamping equipment, the tamped briquettes can become partially loose. During delivery to the carbonization chamber, some broken coal can fall and accumulate beneath the coke door or be squeezed into the gap between the door and the door frame. Repeated loading can cause the coke door to deform due to compression, leading to separation between the knife-edge sealing surface and the door frame, potentially causing raw gas leakage or even fire. This not only pollutes the environment but also directly impacts normal coke oven production, increasing labor and maintenance costs and investment in equipment replacement.

[0004] The Chinese utility model patent, with authorization publication number CN208151268U, discloses a "rammed coke oven with a raised-leg coke side door." The patent comprises a coke side door body, a coke side door blade, castables, and a castable bracket. Multiple castables are anchored to the inner side of the coke side door body to form an inner lining structure, with a castable bracket located at the bottom of the castables. The bottom of the castable bracket, facing away from the coke side door body, tapers inward, with the top flush with the outer side of the castable, forming a raised-leg structure. The dimensions of the lowest castable are adapted to the internal dimensions of the castable bracket. This technical solution can, to a certain extent, prevent the oven door from being squeezed and deformed at the bottom. The raised-leg structure ensures sufficient space between the castable bracket and the oven door frame to accommodate coal fragments that fall from the coal briquettes. However, the space formed by the raised-leg structure is limited after all. When a large amount of broken coal falls from the coal cake or the coal is loaded multiple times, the coke side furnace door will still be squeezed, thereby affecting the sealing.

[0005] The present invention provides a coke side furnace door of a ramming coke oven with a small cleaning furnace door at the bottom and a matching broken coal cleaning device. When the coke side furnace door is closed, only the small cleaning furnace door at the bottom of the coke side furnace door needs to be opened to clean the broken coal at the bottom, thereby preventing the furnace door from being squeezed and deformed at the bottom, ensuring that the furnace door maintains good sealing performance for a long time, preventing raw coal gas from leaking out and polluting the environment, reducing labor maintenance costs, maintaining normal production of the coke oven, and reducing equipment investment. Summary of the Invention

[0006] The present invention provides a ramming coke oven coke side furnace door structure and a matching broken coal cleaning device. A small cleaning furnace door is provided at the lower part of the coke side furnace door of the ramming coke oven. When the coke side furnace door is closed, the small cleaning furnace door can be used to clean the broken coal that falls on the coke side furnace door, thereby preventing the coke oven door from being deformed due to extrusion. The broken coal cleaning device can be used in conjunction with the process of cleaning the broken coal to prevent raw coal gas from leaking and polluting the environment. The invention has the characteristics of convenient operation, good sealing performance, long service life, and being beneficial to environmental protection.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A ramming coke oven coke side door structure comprises a door body and a door lining; the door body is a metal structural component, a door lining is arranged on the inner side of the door body, and the door lining is made of a refractory material; a small cleaning door is also included; a mounting door opening is arranged at the lower part of the door body, and the small cleaning door is movably arranged in the mounting door opening; the small cleaning door consists of a door body and a door lining; the door body is a metal structural component, a door lining is arranged on the inner side of the door body, and the door lining is made of a refractory material.

[0009] The small furnace door body is made of cast iron or stainless steel.

[0010] The furnace door lining adopts refractory castable blocks or cordierite bricks; the small furnace door lining adopts refractory castable blocks.

[0011] The height of the cleaning small furnace door is not less than 200 mm and the width is not less than 300 mm.

[0012] The cleaning small furnace door is one that is arranged in the middle of the coke side furnace door in the width direction, or a plurality of cleaning small furnace doors are arranged along the width direction of the coke side furnace door.

[0013] The cleaning small furnace door and the installation door hole adopt a pull-out structure, and the door panel area of ​​the small furnace door body is larger than the area of ​​the installation door hole. A hook is provided on the outside of the door panel, and the hook can be connected with an external linear moving device.

[0014] A crushed coal cleaning device includes a dust hood, a dust suction hose and a dust suction head; the dust suction head adopts a long flat mouth structure and is made of high-temperature resistant metal; the dust hood is arranged at the outer end of the dust suction head and can fully cover the installation door opening, and the dust hood is rotatably connected to the dust suction head; the dust suction head is connected to the coke oven dust removal system through the dust suction hose, and a valve is provided on the dust suction hose.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1) In a ramming coke oven, when coal briquettes are loaded into the carbonization chamber from the machine side, broken coal may fall from the briquettes due to vibration and insufficient compaction of the briquettes. The broken coal is then pushed to the coke-side oven door by the briquettes. After the coal is loaded, the coke-side oven door is squeezed, affecting the sealing performance. The present invention provides a small cleaning door at the lower part of the coke-side oven door of the ramming coke oven. When the coke-side oven door is closed, the small cleaning door can be used to clean the broken coal that has fallen on the coke-side oven door, thereby preventing the coke oven door from being deformed due to squeezing.

[0017] 2) During the coke oven production, by regularly opening and cleaning the small furnace door to clean the broken coal that has fallen from the coal cakes and accumulated at the bottom of the coke side furnace door, the coke side furnace door will not be deformed due to long-term external force compression, ensuring that it maintains good sealing performance for a long time, preventing the leakage of raw coal gas to pollute the environment, reducing labor maintenance costs, and is conducive to maintaining the normal production of the coke oven and reducing investment in replacing equipment.

[0018] 3) The crushed coal cleaning device can be used in conjunction with the cleaning process to prevent the leakage of raw coal gas and pollution of the environment during the cleaning process;

[0019] 4) It has the characteristics of simple structure, easy operation, good sealing performance, long service life, and is beneficial to environmental protection.

[0020] 5) The coke side oven door of the present invention is applicable to ovens that prepare coal cakes outside the oven. It is applicable not only to ramming coke ovens, but also to heat recovery coke ovens and top-loading-ramming integrated coke ovens. It has a wide range of applications and good application effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of a coke side oven door structure of a ramming coke oven according to the present invention.

[0022] In the figure: 1. Furnace door 2. Furnace door lining 3. Cleaning the small furnace door 4. Coal cakes 5. Crushed coal DETAILED DESCRIPTION

[0023] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings:

[0024] like Figure 1As shown, the coke side furnace door structure of a ramming coke oven described in the present invention includes a furnace door body 1 and a furnace door lining 2; the furnace door body 1 is a metal structural part, and a furnace door lining 2 is arranged on the inner side of the furnace door body 1, and the furnace door lining 2 is a refractory lining; it also includes a cleaning small furnace door 3; a mounting door opening is arranged at the lower part of the furnace door body 1, and the cleaning small furnace door 3 is movably arranged in the mounting door opening; the cleaning small furnace door 3 is composed of a small furnace door body and a small furnace door lining, the small furnace door body is a metal structural part, and a small furnace door lining is arranged in the small furnace door body, and the small furnace door lining is a refractory lining.

[0025] The small furnace door body is made of cast iron or stainless steel.

[0026] The furnace door lining adopts refractory castable blocks or cordierite bricks; the small furnace door lining adopts refractory castable blocks.

[0027] The height of the cleaning small furnace door 3 is not less than 200 mm, and the width is not less than 300 mm.

[0028] The cleaning small furnace door 3 is one provided in the middle of the coke side furnace door in the width direction, or a plurality of cleaning small furnace doors 3 are provided along the width direction of the coke side furnace door.

[0029] The cleaning small furnace door 3 and the installation door hole adopt a pull-out structure, and the door panel area of ​​the small furnace door body is larger than the area of ​​the installation door hole. A hook is provided on the outside of the door panel, and the hook can be connected with an external linear moving device.

[0030] The present invention describes a crushed coal cleaning device, comprising a dust hood, a dust suction hose and a dust suction head; the dust suction head adopts a long flat mouth structure and is made of high-temperature resistant metal; the dust hood is arranged at the outer end of the dust suction head and can fully cover the installation door opening, and the dust hood is rotatably connected to the dust suction head; the dust suction head is connected to the coke oven dust removal system through the dust suction hose, and a valve is provided on the dust suction hose.

[0031] In the coke side furnace door structure of a ramming coke oven described in the present invention, a cleaning small furnace door 3 is provided at the lower part of the coke side furnace door. The cleaning small furnace door 3 is an openable structure for cleaning the broken coal 5 between the lower part of the coke side furnace door and the coal cakes 4. By cleaning the small furnace door 3, the broken coal 5 inside the coke side furnace door can be removed at any time when the coke side furnace door is closed, thereby preventing the bottom of the coke side furnace door from being deformed due to extrusion.

[0032] The main body of the coke-side furnace door of the present invention adopts a conventional "furnace door body + furnace door lining" structure. The cleaning furnace door 3 is preferably a pull-out structure for easy entry and exit. The cleaning furnace door can be opened manually or by an external mechanized device, such as a linear motion device such as a trolley or hydraulic cylinder.

[0033] In order to ensure the overall thermal insulation performance of the coke side furnace door, a small furnace door lining is also provided on the inside of the small furnace door body of the cleaning small furnace door 3, and for the cleaning small furnace door 3 adopting a pull-out structure, the door panel area must be larger than the area of ​​the installation door opening to prevent the gas in the furnace from escaping and heat loss.

[0034] To prevent the leakage of raw coal gas from the furnace and contamination of the environment when cleaning the broken coal, a broken coal cleaning device can be installed on the outside of the coke-side furnace door. This device consists of a dust hood, a dust hose, and a dust head. The dust head features a long, flat mouth, allowing it to reach through the installation door opening and into the gap between the coal briquettes and the coke-side furnace door for cleaning after the small furnace door is removed. The dust head is made of high-temperature resistant metal and can be rotatably mounted on a bracket when cleaning the broken coal. A dust hood is installed on the outer end of the dust head, completely covering the installation door opening. Negative pressure is maintained inside the dust hood, preventing the escape of raw coal gas during cleaning. The dust head is connected to the coke oven dust removal system via the dust hose, and a valve on the dust hose controls the start and stop of the cleaning process.

[0035] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A ramming coke oven coke side door structure, comprising a door body and a door lining; the door body is a metal structural member, the inner side of the door body is provided with a door lining, and the door lining is made of a refractory material; characterized in that: It also includes a cleaning small furnace door; an installation door opening is provided at the lower part of the furnace door body, and the cleaning small furnace door is movably provided in the installation door opening; the cleaning small furnace door is composed of a small furnace door body and a small furnace door lining, the small furnace door body is a metal structural part, and a small furnace door lining is provided in the small furnace door body, and the small furnace door lining is a refractory material lining.

2. A ramming coke oven coke side door structure according to claim 1, characterized in that: The small furnace door body is made of cast iron or stainless steel.

3. The coke side door structure of a ramming coke oven according to claim 1, characterized in that: The furnace door lining adopts refractory castable blocks or cordierite bricks; the small furnace door lining adopts refractory castable blocks.

4. The coke side door structure of a ramming coke oven according to claim 1, characterized in that: The height of the cleaning small furnace door is not less than 200 mm and the width is not less than 300 mm.

5. The coke side door structure of a ramming coke oven according to claim 1, characterized in that: The cleaning small furnace door is one arranged in the middle of the coke side furnace door in the width direction, or a plurality of cleaning small furnace doors are arranged along the width direction of the coke side furnace door.

6. The coke side door structure of a ramming coke oven according to claim 1, characterized in that: The cleaning small furnace door and the installation door hole adopt a pull-out structure, and the door panel area of ​​the small furnace door body is larger than the area of ​​the installation door hole. A hook is provided on the outside of the door panel, and the hook can be connected with an external linear moving device.

7. A crushed coal cleaning device, used in conjunction with the coke side door structure of a ramming coke oven according to any one of claims 1 to 6, characterized in that: The crushed coal cleaning device includes a dust hood, a dust suction hose and a dust suction head; the dust suction head adopts a long flat mouth structure and is made of high-temperature resistant metal; the dust hood is arranged at the outer end of the dust suction head and can fully cover the installation door opening, and the dust hood is rotatably connected to the dust suction head; the dust suction head is connected to the coke oven dust removal system through the dust suction hose, and a valve is provided on the dust suction hose.

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