A multi-stage heating coke oven combustion chamber regulating port structure

Abstract

The present invention relates to a regulating port structure for a multi-stage heating coke oven combustion chamber. A single-channel or double-channel for segmented heating is arranged inside the vertical flue wall of the coke oven combustion chamber; the single-channel for segmented heating is a fuel channel or an air channel; the double-channel for segmented heating is a fuel channel and an air channel; a regulating port seat protruding outside the wall is arranged at the position corresponding to the upper middle part of the combustion chamber on the vertical flue wall. A pore passage is arranged inside the regulating port seat. The lower port of the pore passage is communicated with the corresponding fuel channel and / or air channel, and the upper port of the pore passage is communicated with the corresponding vertical flue. The upper port of the pore passage can be partially or completely closed by a regulating brick arranged on the regulating port seat. The present invention can adjust the opening degree of the fuel outlet or air outlet located in the upper part of the combustion chamber through the furnace top peephole during the production operation of the coke oven, and readjust the distribution ratio of gas volumes in different segments according to needs, so as to improve the uniformity of the longitudinal temperature of the combustion chamber, reduce heat loss and improve the quality of coke at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of coke ovens, and particularly relates to a combustion chamber adjusting port structure for a multi-stage heating coke oven. Background Art

[0002] With the development and application of large-scale coke oven technology in China, multi-stage heating coke ovens meet the requirements of the flame length in high-carbonization chambers. For high-carbonization chamber coke ovens, the gas distribution in the longitudinal direction of the combustion chamber directly affects the heating uniformity of the coke oven and the quality of coke. Limited by the traditional coke oven structure, the gas distribution in the longitudinal direction is mainly adjusted by adjusting bricks in the regenerator chamber (i.e., the downward adjustment method). When the adjustment holes are opened, dust will also escape, seriously polluting the working environment. For the multi-stage heating coke oven, the second or third opening in the upper-middle part of the vertical flue wall has determined the gas distribution of the opening after the coke oven is built. Therefore, when the production conditions change, it is very difficult to make corresponding adjustments to adapt to the new production conditions. Summary of the Invention

[0003] The present invention provides a combustion chamber adjusting port structure for a multi-stage heating coke oven, which can adjust the opening degree of the fuel outlet or air outlet located in the upper part of the combustion chamber through the furnace top peephole during the production operation of the coke oven, and re-adjust the gas distribution ratio of different stages according to needs, so as to improve the longitudinal temperature uniformity of the combustion chamber, reduce heat loss and improve the quality of coke at the same time.

[0004] To achieve the above object, the present invention is implemented by adopting the following technical solutions:

[0005] A combustion chamber adjusting port structure for a multi-stage heating coke oven, in which a segmented heating single-channel or a segmented heating double-channel is provided in the vertical flue wall of the coke oven combustion chamber; the segmented heating single-channel is a fuel channel or an air channel; the segmented heating double-channel is a fuel channel and an air channel; a regulating port seat protruding outside the wall is provided at the position corresponding to the upper-middle part of the combustion chamber in the vertical flue wall, a hole is provided in the regulating port seat, the lower port of the hole is communicated with the corresponding fuel channel and / or air channel, the upper port of the hole is communicated with the corresponding vertical flue, and the upper port of the hole can be partially or completely closed by a regulating brick provided on the regulating port seat.

[0006] The regulating port seat is made of refractory bricks and is embedded in the vertical flue wall during the construction of the combustion chamber. A bayonet is provided at the top of the part of the regulating port seat protruding outside the vertical flue wall, and the horizontal cross-sectional shape of the bayonet is C-shaped.

[0007] The vertical cross-sectional shape of the bayonet corresponding to the width direction is a trapezoid with a wider upper part and a narrower lower part, and the shape of the regulating brick matches the shape of the bayonet.

[0008] The regulating bricks are moved and placed by means of hooks extending through the peepholes at the top of the furnace; a groove matching with the hooks is arranged on the upper part of the regulating bricks, and the groove is inclined upward and inward of the regulating bricks.

[0009] The cross-sectional shape of the groove is semi-circular, fan-shaped or prismatic.

[0010] One side of the regulating brick corresponding to the thickness direction is provided with an inclined surface that narrows downward at the lower part, and this inclined surface plays a guiding role when the regulating brick is placed into the regulating orifice seat.

[0011] The upper end of the duct extends obliquely upward and inward into the vertical flue, and a protruding structure is provided on the upper part of the regulating orifice seat to cooperate with it.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0013] 1) By means of the hooks extending through the peepholes in the top area of the furnace, the regulating bricks at the regulating orifice seats in the upper and middle parts of the combustion chamber can be replaced, so as to realize the distribution adjustment of the gas volume at the outlets of different sections of the combustion chamber, thereby improving the uniformity of the longitudinal temperature in the combustion chamber;

[0014] 2) When the production conditions of the coke oven change, the combustion situation in the combustion chamber can be adjusted without affecting production, and the operation is convenient and fast. Description of the Drawings

[0015] Figure 1 is a three-dimensional structural schematic diagram of the regulating orifice seat described in the present invention.

[0016] Figure 2 is the front view of the regulating orifice seat described in the present invention.

[0017] Figure 3 is Figure 2 the left view of

[0018] Figure 4 is the front view of the regulating brick described in the present invention.

[0019] Figure 5 is Figure 4 the top view of

[0020] In the figure: 1. Partition wall of the vertical flue 2. Regulating orifice seat 3. Duct 4. Bayonet 5. Protruding structure 6. Upper port of the duct 7. Regulating brick 8. Groove 9. Inclined surface Detailed Embodiments

[0021] The following further describes the detailed embodiments of the present invention in conjunction with the drawings:

[0022] The present invention relates to a regulating port structure for a multi-stage heating coke oven combustion chamber. A segmented heating single-channel or a segmented heating double-channel is provided in the vertical flue partition wall 1 of the coke oven combustion chamber. The segmented heating single-channel is a fuel channel or an air channel. The segmented heating double-channel is a fuel channel and an air channel. As Figures 1-3 shown, a regulating port seat 2 protruding outside the wall is provided at the position corresponding to the upper middle part of the combustion chamber on the vertical flue partition wall 1. A hole 3 is provided in the regulating port seat 2. The lower port of the hole 3 is communicated with the corresponding fuel channel and / or air channel, and the upper port of the hole 3 is communicated with the corresponding vertical flue. The upper port of the hole 3 can be partially or completely closed by a regulating brick 7 provided on the regulating port seat 2.

[0023] The regulating port seat 2 is made of refractory bricks and is embedded in the vertical flue partition wall 1 during the masonry of the combustion chamber. A bayonet 4 is provided at the top of the part of the regulating port seat 2 protruding outside the vertical flue partition wall 1. The horizontal cross-sectional shape of the bayonet 4 is C-shaped.

[0024] The vertical cross-sectional shape of the bayonet 4 corresponding to the width direction is a trapezoid with a wider upper part and a narrower lower part. The shape of the regulating brick 7 matches the shape of the bayonet 4.

[0025] The regulating brick 7 is moved and placed by a hook tool extending through the viewing hole from the furnace top. A groove 8 cooperating with the hook tool is provided at the upper part of the regulating brick 7. The groove 8 is inclined upward and inward of the regulating brick 7 (as Figure 4 、 Figure 5 shown).

[0026] The cross-sectional shape of the groove 8 is semi-circular, fan-shaped or prismatic.

[0027] One side lower part corresponding to the thickness direction of the regulating brick 7 is provided with an inclined surface 9 that narrows downward. The inclined surface 9 plays a guiding role when the regulating brick 7 is placed into the regulating port seat 2.

[0028] The upper end of the hole 3 extends obliquely upward into the vertical flue, and a protruding structure 5 is provided on the upper part of the regulating port seat 2 to cooperate with it.

[0029] The regulating port structure of the combustion chamber of the present invention is used to separately regulate the fuel channels and air channels in the upper section of the multi-stage heating coke oven one by one. The fuel in the fuel channel is a mixed gas of one or more components of coke oven gas, blast furnace gas, mixed gas, and off-gas.

[0030] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A regulating port structure for a multi-stage heating coke oven combustion chamber, wherein a single-channel or double-channel for segmented heating is provided in the vertical flue partition wall of the coke oven combustion chamber; the single-channel for segmented heating is a fuel channel or an air channel; the double-channel for segmented heating is a fuel channel and an air channel; characterized in that, The vertical flue partition wall is provided with an adjustment orifice seat protruding outside the wall at the position corresponding to the upper middle part of the combustion chamber, and a hole is provided in the adjustment orifice seat; the upper end of the hole extends obliquely upward into the vertical flue, and a protruding structure is provided at the upper part of the adjustment orifice seat to cooperate with it; the lower port of the hole communicates with the corresponding fuel passage and / or air passage, and the upper port of the hole communicates with the corresponding vertical flue, and the upper port of the hole can be partially or completely closed by an adjustment brick provided on the adjustment orifice seat; the adjustment orifice seat is made of refractory bricks and is embedded in the vertical flue partition wall during the masonry of the combustion chamber. The part of the adjustment orifice seat protruding outside the vertical flue partition wall is provided with a bayonet at its top, and the horizontal cross-sectional shape of the bayonet is C-shaped; the vertical cross-sectional shape of the bayonet corresponding to the width direction is a trapezoid with a wider upper part and a narrower lower part, and the shape of the adjustment brick matches the shape of the bayonet; a downward-narrowing inclined surface is provided at the lower part of one side of the adjustment brick corresponding to the thickness direction, and this inclined surface plays a guiding role when the adjustment brick is placed into the adjustment orifice seat.

2. The regulating port structure for a multi-stage heating coke oven combustion chamber according to claim 1, characterized in that, The adjustment brick is moved and placed by a hook tool extending through the peephole on the furnace top; a groove cooperating with the hook tool is provided at the upper part of the adjustment brick, and the groove is inclined upward and inward of the adjustment brick.

3. The regulating port structure for a multi-stage heating coke oven combustion chamber according to claim 2, characterized in that, The cross-sectional shape of the groove is semi-circular, fan-shaped or prismatic.

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