CN112625696B - Coal charging hole/smoke guiding hole and ascending pipe hole structure of coke oven top - Google Patents

Abstract

The invention relates to a coal charging hole/smoke guiding hole and ascending pipe hole structure of a coke oven top, wherein the coke oven top is provided with a plurality of coal charging holes/smoke guiding holes, and the ascending pipe hole is arranged near the coke oven top at the machine side or the coke side; the coal charging hole/smoke guiding hole and the rising pipe hole are respectively provided with a bypass hole, the upper end of the bypass hole is communicated with the corresponding coal charging hole/smoke guiding hole and the rising pipe hole, and the lower end of the bypass hole is communicated with the carbonization chamber. By arranging the bypass holes, the invention increases the airflow flow area at the positions of the coal loading holes/smoke guide holes and the ascending pipe and reduces the system resistance of the airflow, thereby effectively improving the collection efficiency of the ascending pipe and the smoke guide holes on raw gas and smoke dust, reducing pollution sources and reducing the emission of harmful gases, and realizing green energy-saving operation of coking production.

Description

A coal loading hole/smoke guide hole and riser hole structure for a coke oven top

Technical Field

The invention relates to the technical field of coke ovens, and in particular to a coal loading hole/smoke guide hole and a riser hole structure on a coke oven top.

Background technique

The main body of a large coke oven consists of a heat storage chamber, a ramp, a combustion chamber/carbonization chamber and a furnace roof, and the furnace roof is located above the combustion chamber/carbonization chamber. The furnace roof of a top-loading coke oven is generally equipped with four coal loading holes and one riser hole, and the furnace roof of a ramming coke oven is generally equipped with a smoke guide hole, a graphite removal hole and one riser hole. The area between the coal loading line corresponding to the coal loading height in the carbonization chamber and the cross-roof brick at the bottom of the furnace roof is the furnace roof space. The raw coal gas and smoke generated during the coking process are introduced into the riser through the furnace roof space and the coal loading hole circulation space, and then exported out of the coke oven through the riser.

At present, the coal loading holes/smoke guide holes and riser holes on the top of the coke oven mostly adopt a flat-footed trumpet-shaped "eight" structure, which can collect and reprocess the coke oven raw gas and smoke generated during the coke loading process and the smoke generated during the coke discharge process. In actual production, in order to increase the coke output, overproduction of coke ovens has become the norm. The increase in coal loading has also increased the amount of raw gas and smoke generated by the coke oven. The circulation space of the coal loading holes on the top of the furnace cannot meet the pressure requirements of the furnace top during production, which aggravates the smoke and dust escape phenomenon; even smoke and fire may appear on the top of the furnace, causing environmental pollution and safety hazards, and also seriously deteriorating the environment of the furnace top operation area.

Based on the actual coke oven production, the coke oven equipment R&D personnel have always been working hard to reduce the emission of raw coal gas and smoke by improving the furnace structure and controlling pollution at the source.

Summary of the invention

The present invention provides a structure of coal loading holes/smoke guiding holes and riser holes on the roof of a coke oven. By arranging bypass holes, the air flow area at the coal loading holes/smoke guiding holes and the riser is increased, and the system resistance of gas flow is reduced, thereby effectively improving the collection efficiency of the riser and the smoke guiding holes for raw coal gas and smoke, reducing pollution sources and reducing harmful gas emissions, so as to achieve green and energy-saving operation of coking production.

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

A structure of coal loading holes/smoke guide holes and riser holes on the roof of a coke oven. The roof of the coke oven is provided with a plurality of coal loading holes/smoke guide holes, and the roof of the coke oven close to the machine side or the coke side is provided with a riser hole; the coal loading holes/smoke guide holes and the riser holes are respectively provided with bypass holes, the upper ends of the bypass holes are communicated with the corresponding coal loading holes/smoke guide holes and the riser holes, and the lower ends of the bypass holes are communicated with a carbonization chamber.

The coal loading hole/smoke guiding hole is respectively provided with a bypass hole 1 and a bypass hole 2 on both sides corresponding to the length direction of the carbonization chamber.

The riser hole is provided with a bypass hole three on the side facing the carbonization chamber.

The bypass hole is integrally formed with the corresponding coal loading hole/smoke guide hole and riser hole during the process of building or pouring the coke oven roof.

The cross-sectional shape of the bypass hole is circular or polygonal.

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

By setting bypass holes, the air flow area at the coal loading hole/smoke guide hole and the riser is increased, and the system resistance of gas circulation is reduced, thereby effectively improving the collection efficiency of the riser and smoke guide hole for raw coal gas and smoke, reducing pollution sources and reducing harmful gas emissions, so that coking production can achieve green and energy-saving operation.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of the structure of the coal loading hole and the riser hole of the coke oven roof in Example 1 of the present invention.

2 is a schematic diagram of the structure of the smoke guide holes and riser holes of the coke oven top in Example 2 of the present invention.

In the figure: 1. Carbonization chamber 2. Coke oven top 3. Coal loading hole 4. Smoke guide hole 5. Riser hole 6. Coal loading line 1 7. Coal loading line 2 8. Air flow direction 9. Bypass hole 1 10. Bypass hole 2 11. Bypass hole 3

Detailed ways

The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings:

As shown in Figures 1 and 2, the present invention relates to a structure of coal loading holes/smoke guide holes and riser holes on the roof of a coke oven. The coke oven roof 2 is provided with a plurality of coal loading holes 3/smoke guide holes 4, and the coke oven roof 2 close to the machine side or the coke side is provided with a riser hole 5; the coal loading holes 3/smoke guide holes 4 and the riser holes 5 are respectively provided with bypass holes, the upper ends of the bypass holes are connected to the corresponding coal loading holes 3/smoke guide holes 4 and the riser holes 5, and the lower ends of the bypass holes are connected to the carbonization chamber 1.

The coal loading hole 3/smoke guiding hole 4 is provided with bypass hole 1 and bypass hole 2 respectively on both sides corresponding to the length direction of the carbonization chamber 1.

The riser hole 5 is provided with a bypass hole 3 on the side facing the carbonization chamber 1 .

The bypass hole is integrally formed with the corresponding coal loading hole 3/smoke guide hole 4 and riser hole 5 during the process of masonry or casting of the coke oven roof 2.

The cross-sectional shape of the bypass hole is circular or polygonal.

The following examples are implemented on the premise of the technical solution of the present invention, and provide detailed implementation methods and specific operation processes, but the protection scope of the present invention is not limited to the following examples. The methods used in the following examples are conventional methods unless otherwise specified.

[Example 1]

As shown in FIG1 , in this embodiment, the coke oven is a top-loading coke oven, and four coal loading holes 3 are arranged on the coke oven top 2 along the length of the carbonization chamber 1, and one riser hole 5 is arranged near the machine side. The coal loading hole 3 and the riser hole 5 are respectively provided with bypass holes.

In this embodiment, the coal loading hole 3 is symmetrically provided with bypass hole 1 9 and bypass hole 2 10 on both sides corresponding to the length direction of the carbonization chamber 1, and the riser hole 5 is provided with bypass hole 3 11 on the side facing the carbonization chamber 1. The bypass hole 1 9, the bypass hole 2 10 and the bypass hole 3 11 are all arranged obliquely, and the upper ends are connected with the corresponding coal loading hole 3 and the riser hole 5, and the lower ends are connected with the carbonization chamber 1.

The cross sections of bypass hole 1 9 , bypass hole 2 10 and bypass hole 3 11 are all circular, and are integrally formed with the corresponding coal loading hole 3 and riser hole 5 when the coke oven roof 2 is built.

During coke oven production, coal is loaded to the coal loading line 6 through the coal loading hole 3. The coal loading line 6 and the bottom of the coke oven roof 2 form a furnace roof space. The raw coal gas and smoke generated during coal loading and coking flow in the furnace roof space in the direction of airflow 8 and enter the coal loading hole through the bypass hole 1 9 and the bypass hole 2 10. Due to the addition of the bypass hole 1 9 and the bypass hole 10, the flow cross-section of the airflow at the bottom entrance of the coal loading hole 3 is increased, thereby reducing the resistance of the airflow flow system and effectively guiding the raw coal gas and smoke to the riser hole 5.

Similarly, due to the addition of the bypass hole 11, the flow cross-section of the airflow at the bottom entrance of the riser hole 5 is increased, which can also reduce the resistance of the airflow system, thereby effectively introducing the raw gas and smoke into the riser hole 5.

[Example 2]

As shown in FIG2 , in this embodiment, the coke oven is a ramming coke oven, and the coke oven top 2 is provided with two smoke guide holes 3 along the length of the carbonization chamber 1, and a riser hole 5 is provided near the coke side. The smoke guide hole 4 and the riser hole 5 are respectively provided with bypass holes.

In this embodiment, the smoke guide hole 4 is symmetrically provided with bypass hole 1 9 and bypass hole 2 10 on both sides corresponding to the length direction of the carbonization chamber 1, and the riser hole 5 is provided with bypass hole 3 11 on the side facing the carbonization chamber 1. The bypass hole 1 9, the bypass hole 2 10 and the bypass hole 3 11 are all arranged obliquely, and the upper ends are connected with the corresponding coal loading hole 3 and the riser hole 5, and the lower ends are connected with the carbonization chamber 1.

The cross sections of bypass hole 1 9 , bypass hole 2 10 and bypass hole 3 11 are all circular, and are integrally formed with the corresponding smoke guide hole 4 and riser hole 5 when the coke oven roof 2 is built.

When the coke oven is in production, coal is loaded onto the coal loading line 2 7, and the coal loading line 2 7 and the bottom of the coke oven roof 2 form a furnace roof space. During the coal loading, the furnace roof smoke guide vehicle guides the generated raw coal gas and smoke through the smoke guide hole 4; the raw coal gas and smoke flow in the furnace roof space according to the airflow direction 8 and enter the bottom entrance of the smoke guide hole 4; a part of them enters the smoke guide hole through the bypass hole 1 9 and the bypass hole 2 10; due to the addition of the bypass hole 1 9 and the bypass hole 10, the flow cross-section of the airflow at the bottom entrance of the smoke guide hole 4 is increased, thereby reducing the resistance of the airflow flow system and effectively guiding the raw coal gas and smoke to the smoke guide hole.

During the coking period, the raw gas and smoke flow in the furnace top space in the air flow direction 8 and enter the bottom entrance of the riser hole 5. A part of the raw gas and smoke enter the riser hole 5 through the bypass hole three 11. Due to the addition of the bypass hole three 11, the flow cross-section of the airflow at the bottom entrance of the riser hole 5 is increased, reducing the resistance of the airflow system, so that the raw gas and smoke can be effectively introduced into the riser hole 5.

The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims (4)

1. A coal charging hole/smoke guiding hole and a rising pipe hole structure of a coke oven top, wherein the coke oven top is provided with a plurality of coal charging holes/smoke guiding holes, and the rising pipe hole is arranged on the coke oven top close to the machine side or the coke side; the coal charging hole/smoke guiding hole and the rising pipe hole are respectively provided with a bypass hole, the upper end of the bypass hole is communicated with the corresponding coal charging hole/smoke guiding hole and rising pipe hole, and the lower end of the bypass hole is communicated with the carbonization chamber; the bypass hole is integrally formed with the corresponding coal charging hole/smoke guiding hole and the rising pipe hole in the process of building or pouring the coke oven top.

2. The structure of a coal charging hole/smoke guiding hole and a rising pipe hole of a coke oven top according to claim 1, wherein the coal charging hole/smoke guiding hole is provided with a first bypass hole and a second bypass hole respectively at two sides of the corresponding carbonization chamber in the longitudinal direction.

3. The coal charging hole/smoke guiding hole and ascending pipe hole structure of the top of a coke oven according to claim 1, wherein a bypass hole III is arranged on one side of the ascending pipe hole facing the carbonization chamber.

4. The structure of a coal charging hole/smoke guiding hole and a rising pipe hole of a coke oven roof according to claim 1, wherein the cross section of the bypass hole is circular or polygonal.