阅读说明：本技术 一种焦炉炉顶结构及焦炉 (Coke oven roof structure and coke oven ) 是由 印文宝 徐列 韩冬 姜士敏 王奇 李彬 韩克明 于 2020-08-19 设计创作，主要内容包括：本公开实施例提供一种焦炉炉顶结构及焦炉。焦炉炉顶结构包括炉顶区,炉顶区包括：与炭化室或燃烧室立火道连通的助燃空气通道；与助燃空气通道连通的工质气体纵横网状通道,以及与工质气体纵横网状通道连通的工质气体入口；位于工质气体纵横网状通道上方的气体隔热纵横网状通道,以及与气体隔热纵横网状通道连通的隔热气体入口和隔热气体出口；设于助燃空气通道内的工质气体流量调节装置,用于调节经工质气体纵横网状通道进入炭化室或燃烧室立火道的工质气体的流量。采用本公开的焦炉炉顶结构及焦炉,能够降低焦炉炉顶表面热损失,提高焦炉的热工效率,实现对热能的回收利用。(The embodiment of the disclosure provides a coke oven roof structure and a coke oven. The coke oven roof structure includes a roof region, the roof region including: a combustion-supporting air channel communicated with the vertical flame path of the carbonization chamber or the combustion chamber; the working medium gas inlet is communicated with the working medium gas vertical and horizontal reticular channel; the gas heat insulation vertical and horizontal reticular channel is positioned above the working medium gas vertical and horizontal reticular channel, and the heat insulation gas inlet and the heat insulation gas outlet are communicated with the gas heat insulation vertical and horizontal reticular channel; the working medium gas flow regulating device is arranged in the combustion-supporting air channel and is used for regulating the flow of the working medium gas entering the carbonization chamber or the vertical flame path of the combustion chamber through the longitudinal and transverse reticular channels of the working medium gas. By adopting the coke oven top structure and the coke oven disclosed by the invention, the heat loss of the surface of the coke oven top can be reduced, the thermal efficiency of the coke oven can be improved, and the recycling of heat energy can be realized.)

1. A coke oven roof structure comprising a roof section, the roof section comprising:

a combustion-supporting air channel communicated with the vertical flame path of the carbonization chamber or the combustion chamber;

the working medium gas inlet is communicated with the working medium gas vertical and horizontal reticular channel;

the gas heat insulation vertical and horizontal reticular channel is positioned above the working medium gas vertical and horizontal reticular channel, and the heat insulation gas inlet and the heat insulation gas outlet are communicated with the gas heat insulation vertical and horizontal reticular channel;

the working medium gas flow regulating device is arranged in the combustion-supporting air channel and is used for regulating the flow of the working medium gas entering the carbonization chamber or the vertical flame path of the combustion chamber through the longitudinal and transverse reticular channels of the working medium gas.

2. Coke oven roof structure according to claim 1,

the working medium gas inlet is one and is arranged on the front surface of the machine side or the coke side; or a plurality of working medium gas inlets are arranged on the front surface of the machine side and/or the coke side;

the heat insulation gas inlet is one and is arranged on the front surface of the machine side or the coke side; or a plurality of heat insulation gas inlets are arranged on the front surface of the machine side and/or the coke side;

the heat insulation gas outlet is one and is arranged on the front surface of the machine side or the coke side; alternatively, a plurality of the heat insulating gas outlets are provided on the front surface of the machine side and/or the coke side.

3. Coke oven roof structure according to claim 1,

at least one working medium gas inlet is provided with a first detachable sealing structure; and/or

At least one heat insulation gas inlet is provided with a second detachable closed structure; and/or

At least one of the insulated gas outlets is provided with a removable third closure structure.

4. The coke oven roof structure of claim 1, wherein the working medium gas inlet is located below the insulating gas inlet, the shortest distance between the working medium gas inlet and the insulating gas inlet being 65 mm; or the working medium gas inlet is communicated with the heat insulation gas inlet through a pipeline; or the working medium gas vertical and horizontal reticular channel is communicated with the gas heat insulation vertical and horizontal reticular channel.

5. The coke oven roof structure of claim 1, wherein the working gas comprises: air, exhaust gas, or a mixture of air and exhaust gas.

6. The coke oven roof structure of claim 1, further comprising heat exchange pipes laid in the working medium gas vertical and horizontal reticular channels and/or the gas heat insulation vertical and horizontal reticular channels, wherein heat exchange working medium is introduced into the heat exchange pipes.

7. The coke oven roof structure of claim 6, wherein the heat exchange medium comprises: at least one of demineralized water, thermal oil, and coker wastewater.

8. The coke oven roof structure according to any one of claims 1 to 7, wherein the working medium gas flow regulating means comprises:

a sealing cover positioned at the opening of the top of the combustion air channel;

the steel pipe is hermetically assembled with the sealing cover and can slide up and down relative to the sealing cover;

locate the valve body of steel pipe bottom, including the flange with steel pipe fixed connection to and with flange joint's cavity barrel, the lateral wall of cavity barrel has at least one trompil, when the steel pipe slides from top to bottom to sealed lid, the relative area increase or reduce of discharge port and at least one trompil of working medium gas vertical and horizontal netted passageway and combustion air passageway intercommunication.

9. The coke oven roof structure of claim 8, wherein the coke oven roof structure is applied to a horizontal heat recovery coke oven, the combustion air channel being in communication with the coking chamber.

10. The coke oven roof structure of claim 9, wherein the working medium gas flow regulating means further comprises: the distributor is located below the valve body and is in a hollow cylindrical shape, the bottom of the distributor is closed, and the side wall of the distributor is provided with a plurality of air outlet holes distributed along the circumferential direction.

11. The coke oven roof structure of claim 8, wherein the coke oven roof structure is applied to a top loading coke oven, a stamp charging coke oven or a vertical heat recovery coke oven, and the combustion air channel is communicated with the combustion chamber vertical flue.

12. Coke oven, characterized in that it comprises a coke oven roof structure according to any one of claims 1 to 11.

Technical Field

The embodiment of the disclosure relates to the technical field of metallurgical coking industry, in particular to a coke oven top structure and a coke oven.

Background

The coking industry is a complex process for producing coke, coke oven gas and various chemical products by high-temperature dry distillation of blended coal under the condition of air isolation, wherein a coke oven is a core thermal device of the coking industry, and the blended coal is converted into a final product in a coke oven carbonization chamber through complex physical and chemical changes. At present, the types of coke ovens in the world are more, and the coke ovens mainly comprise: conventional top-loading coke ovens, conventional stamp-charging coke ovens, horizontal heat recovery coke ovens, and vertical heat recovery coke ovens.

The coke oven is a complex thermal kiln, the thermal efficiency of the coke oven is about 70-75%, and the surface of the coke oven exchanges heat with the environment in the forms of convection and radiation, so that not only is the thermal efficiency of the coke oven reduced due to a large amount of heat energy loss, but also the production operation and the body health are influenced due to the fact that the working environment is in a severe high-temperature condition. The surface of the high-temperature industrial device exposed in the environment and the environment have a certain temperature gradient inevitably, so that the high-temperature industrial device has surface heat loss under the action of the thrust force of the temperature gradient according to the principles of energy conservation and heat transfer, and in addition, the energy lost by a low-temperature heat source, particularly the surface heat dissipation, belongs to low-quality heat energy according to the principle of entropy increase, and the recovery of the low-quality heat energy can not be realized without any cost according to the description of the second law of thermodynamics. The contact surface area of the coke oven top and the environment is large, the temperature of the surface of the coke oven top is 50-200 ℃, the heat dissipated from the surface of the coke oven top belongs to a low-temperature heat source with low quality, and under the current technical level, the recovery of the part of heat energy is difficult economically and technically, so that the economic and technical indexes are poor, and the input-output ratio is low.

Disclosure of Invention

The embodiment of the disclosure provides a coke oven roof structure and a coke oven, which are used for reducing the heat loss of the surface of the coke oven roof, improving the thermal efficiency of the coke oven and realizing the recycling of heat energy.

According to an aspect of an embodiment of the present disclosure, there is provided a coke oven roof structure comprising a roof section comprising:

a combustion-supporting air channel communicated with the vertical flame path of the carbonization chamber or the combustion chamber;

the working medium gas inlet is communicated with the working medium gas vertical and horizontal reticular channel;

the gas heat insulation vertical and horizontal reticular channel is positioned above the working medium gas vertical and horizontal reticular channel, and the heat insulation gas inlet and the heat insulation gas outlet are communicated with the gas heat insulation vertical and horizontal reticular channel;

the working medium gas flow regulating device is arranged in the combustion-supporting air channel and is used for regulating the flow of the working medium gas entering the carbonization chamber or the vertical flame path of the combustion chamber through the longitudinal and transverse reticular channels of the working medium gas.

In some embodiments, the working medium gas inlet is one and is arranged on the front surface of the machine side or the coke side; or a plurality of working medium gas inlets are arranged on the front surface of the machine side and/or the coke side; the heat insulation gas inlet is one and is arranged on the front surface of the machine side or the coke side; or a plurality of heat insulation gas inlets are arranged on the front surface of the machine side and/or the coke side; the heat insulation gas outlet is one and is arranged on the front surface of the machine side or the coke side; alternatively, a plurality of the heat insulating gas outlets are provided on the front surface of the machine side and/or the coke side.

In the coke oven, the machine side is one side of a coke pushing car or a coal charging car; the coke side is one side of a coke guide or a coke quenching car.

In some embodiments, at least one working medium gas inlet is provided with a detachable first enclosing structure; and/or at least one insulating gas inlet is provided with a detachable second closing structure; and/or at least one of the insulating gas outlets is provided with a removable third closure structure.

The first sealing structure, the second sealing structure or the third sealing structure may be bricks with sizes corresponding to the size of the working medium gas inlet, the heat insulation gas inlet or the heat insulation gas outlet, or may be other substances capable of sealing the working medium gas inlet, the heat insulation gas inlet or the heat insulation gas outlet, which is not limited herein.

In some embodiments, the working medium gas inlet is located below the insulating gas inlet, and the shortest distance between the working medium gas inlet and the insulating gas inlet is 65 mm; or the working medium gas inlet is communicated with the heat insulation gas inlet through a pipeline; or the working medium gas vertical and horizontal reticular channel is communicated with the gas heat insulation vertical and horizontal reticular channel.

In some embodiments, the working fluid gas comprises: air, exhaust gas, or a mixture of air and exhaust gas.

In some embodiments, the furnace top region further comprises a heat exchange pipeline laid in the working medium gas vertical and horizontal reticular channel and/or the gas heat insulation vertical and horizontal reticular channel, and a heat exchange working medium is filled in the heat exchange pipeline.

In some embodiments, the heat exchange fluid comprises: at least one of demineralized water, thermal oil, and coker wastewater.

In some embodiments, the working fluid gas flow regulating device comprises:

a sealing cover positioned at the opening of the top of the combustion air channel;

the steel pipe is hermetically assembled with the sealing cover and can slide up and down relative to the sealing cover;

locate the valve body of steel pipe bottom, including the flange with steel pipe fixed connection to and with flange joint's cavity barrel, the lateral wall of cavity barrel has at least one trompil, when the steel pipe slides from top to bottom to sealed lid, the relative area increase or reduce of discharge port and at least one trompil of working medium gas vertical and horizontal netted passageway and combustion air passageway intercommunication.

In some embodiments, the coke oven roof structure is applied to a horizontal heat recovery coke oven with a combustion air channel in communication with the coking chamber.

In some embodiments, the working fluid gas flow regulating device further comprises: the distributor is located below the valve body and is in a hollow cylindrical shape, the bottom of the distributor is closed, and the side wall of the distributor is provided with a plurality of air outlet holes distributed along the circumferential direction.

In some embodiments, the coke oven crown structure is applied to a top-loading coke oven, a stamp-charging coke oven or a vertical heat recovery coke oven, and the combustion air channel is communicated with the combustion chamber vertical flue.

According to another aspect of an embodiment of the present disclosure, there is provided a coke oven including any one of the coke oven roof structures described above.

By adopting the coke oven top structure and the coke oven of the embodiment of the disclosure, the working medium gas absorbs heat in the working medium gas crisscross reticular channel and enters the carbonization chamber or the combustion chamber vertical flue through the gas flow regulating device after being heated, thereby improving the combustion temperature, further shortening the coking time, reducing the heat loss on the surface of the coke oven top, improving the thermal efficiency of the coke oven and realizing the recycling of heat energy. Of course, not all advantages described above need to be achieved at the same time by a product or method that implements any embodiment of the disclosure.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the related art, the drawings used in the description of the embodiments of the present disclosure or the related art are briefly introduced below. It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without the exercise of inventive faculty.

FIG. 1A is a schematic cross-sectional view of a top-loading coke oven, a stamp-charging coke oven, or a vertical heat recovery coke oven according to some embodiments of the present disclosure;

FIG. 1B is a schematic cross-sectional view taken along lines C-C and D-D of FIG. 1A;

FIG. 2A is a schematic cross-sectional view of a horizontal heat recovery coke oven according to some embodiments of the present disclosure;

FIG. 2B is a schematic cross-sectional view taken along A-A and B-B of FIG. 2A;

FIG. 3 is a schematic cross-sectional view of a working fluid gas flow regulating device according to some embodiments of the present disclosure;

the reference signs are: 1-a carbonization chamber; 2-a combustion chamber; 3-gas insulated criss-cross mesh channels; 4-a fire hole; 5-combustion air channel; 6-working medium gas vertical and horizontal net-shaped channel; 7-raw gas outlet holes (only provided by the vertical heat recovery coke oven); 8-combustion chamber vertical flame path partition wall; 9-a channel in a partition wall of the working medium gas vertical flue; 10-an inner outlet of the working medium gas vertical flue; 11-vertical flame path of combustion chamber; 12-working medium gas flow regulating device; 13-an insulating gas inlet; 14-working medium gas inlet; 15-an insulating gas outlet; 16-a main wall; 17-descending flue entrance; 18-ascending flame path; 19-a dispenser; 20-a steel pipe; 21-a support handle; 22-a sealing cover; 23-a flange; 24-hollow cylinder.

Detailed Description

The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments, which can be derived by one of ordinary skill in the art from the embodiments disclosed herein without making any creative effort, shall fall within the scope of protection of the present disclosure.

In order to reduce the heat loss of the top surface of the coke oven, improve the thermal efficiency of the coke oven and realize the recycling of heat energy, the embodiment of the disclosure provides a coke oven top structure and a coke oven.

The furnace top area refers to the coke oven carbonization chamber cover top brick and the part above the cover top brick; the top brick of the carbonization chamber cover is generally built by using silica bricks, but clay bricks are used at the joint of the coal charging holes and two sides of the machine coke. The machine side is one side of a coke pusher or a coal charging car; the coke side is one side of a coke guide or a coke quenching car.

As shown in fig. 1A and 1B, embodiments of the present disclosure provide a coke oven roof structure, including a roof region, the roof region including:

a combustion-supporting air channel 5 communicated with the carbonization chamber 1 or the combustion chamber vertical flue 11;

a working medium gas vertical and horizontal reticular channel 6 communicated with the combustion air channel 5, and a working medium gas inlet 14 communicated with the working medium gas vertical and horizontal reticular channel 6;

the gas heat insulation crisscross reticular channel 3 is positioned above the working medium gas crisscross reticular channel 6, and the heat insulation gas inlet 13 and the heat insulation gas outlet 15 are communicated with the gas heat insulation crisscross reticular channel 3;

the working medium gas flow adjusting device 12 is arranged in the combustion-supporting air channel 5 and is used for adjusting the flow of the working medium gas entering the carbonization chamber 1 or the combustion chamber vertical flue 11 through the working medium gas vertical and horizontal reticular channel 6.

In some embodiments, working medium gas inlet 14 is one, and is disposed on the front side of the machine side or the focal side; or, a plurality of working medium gas inlets 14 are arranged on the front surface of the machine side and/or the coke side;

the heat insulation gas inlet 13 is one and is arranged on the front surface of the machine side or the coke side; or, a plurality of heat insulation gas inlets 13 are arranged on the front surface of the machine side and/or the coke side;

one heat insulation gas outlet 15 is arranged on the front surface of the machine side or the coke side; alternatively, a plurality of the heat insulating gas outlets 15 may be provided on the front surface of the machine side and/or the coke side.

In some embodiments, at least one working fluid gas inlet 14 is provided with a removable first enclosing structure; and/or at least one insulating gas inlet 13 is provided with a second removable closure; and/or at least one of the insulating gas outlets 15 is provided with a removable third closing structure.

The heat insulation gas inlet 13, the heat insulation gas outlet 15 and the working medium gas inlet 14 can be sealed to form a sealed air heat insulation layer, so that the temperature of the top surface of the furnace is reduced, and the thermal efficiency of the coke oven is improved.

In some embodiments, working medium gas inlet 14 is located below insulating gas inlet 13, and the shortest distance between working medium gas inlet 14 and insulating gas inlet 13 is 65 mm; or the working medium gas inlet 14 is communicated with the heat insulation gas inlet 13 through a pipeline; or the working medium gas vertical and horizontal reticular passage 6 is communicated with the gas heat insulation vertical and horizontal reticular passage 3.

When the distance between the heat insulation gas inlet and the working medium gas inlet is 65 mm-300 mm, the gas heat insulation vertical and horizontal reticular channel 3 and the working medium gas vertical and horizontal reticular channel 6 can be communicated by a heat insulation gas inlet 13 and a working medium gas inlet 14 which are positioned at the side of the coke oven or at the same side of the coke oven and are arranged at the front side; or the gas heat insulation longitudinal and transverse reticular channel 3 and the working medium gas longitudinal and transverse reticular channel 6 are communicated with each other in the furnace top area through special-shaped refractory bricks or channels formed by brickworks; working medium gas is pressurized or naturally convected by a fan, firstly enters the gas heat-insulating longitudinal and transverse reticular channel 3 through the heat-insulating gas inlet 13 positioned at the machine side or the coke side, then enters the working medium gas longitudinal and transverse reticular channel 6 through the connecting channel, and finally is sent into the coke oven carbonization chamber 1 or the combustion chamber vertical flue 11.

In some embodiments, the working fluid gas comprises: air, exhaust gas, or a mixture of air and exhaust gas.

In some embodiments, the coke oven roof structure further comprises a heat exchange pipeline laid in the working medium gas vertical and horizontal reticular channel 6 and/or the gas heat insulation vertical and horizontal reticular channel 3, and a heat exchange working medium is filled in the heat exchange pipeline.

In some embodiments, the heat exchange fluid comprises: at least one of demineralized water, thermal oil, and coker wastewater.

In some embodiments, as shown in FIG. 3, where the right side is a cross-sectional view of the left side in the A-A direction, the B-B direction, the C-C direction, the D-D direction, the E-E direction and the F-F direction in this order, the working medium gas flow rate adjusting device 12 includes:

a sealing cover 22 located at the top opening of the combustion air passage 5;

a steel pipe 20 hermetically fitted with a sealing cap 22 and capable of sliding up and down with respect to the sealing cap 22;

the valve body arranged at the bottom end of the steel pipe 20 comprises a flange 23 fixedly connected with the steel pipe 20 and a hollow cylinder 24 connected with the flange 23, the side wall of the hollow cylinder 24 is provided with at least one opening, and when the steel pipe 20 slides up and down relative to the sealing cover 22, the relative area of a discharge port of the working medium gas longitudinal and transverse reticular channel 6 communicated with the combustion air channel 5 and the at least one opening is increased or reduced.

In some embodiments, the coke oven roof structure is applied to a horizontal heat recovery coke oven, and the combustion air channel 5 is communicated with the carbonization chamber 1.

In some embodiments, working medium gas flow regulating device 12 further comprises: the distributor 19 is located below the valve body and is in a hollow cylindrical shape, the bottom of the distributor 19 is closed, and the side wall of the distributor 19 is provided with a plurality of air outlet holes distributed along the circumferential direction.

In some embodiments, the coke oven crown structure is applied to a top-loading coke oven, a stamp-charging coke oven or a vertical heat recovery coke oven, and the combustion air channel 5 is communicated with the combustion chamber vertical flue 11.

The embodiment of the disclosure also provides a coke oven, which comprises the coke oven roof structure shown in fig. 1A, 1B, 2A and 2B.