CN213771898U

CN213771898U - Adjustable coke oven inclined passage port structure

Info

Publication number: CN213771898U
Application number: CN202022499062.5U
Authority: CN
Inventors: 牛聪; 王娜; 韩龙; 钱启; 郑彭; 耿宁
Original assignee: Acre Coking and Refractory Engineering Consulting Corp MCC
Current assignee: Acre Coking and Refractory Engineering Consulting Corp MCC
Priority date: 2020-11-03
Filing date: 2020-11-03
Publication date: 2021-07-23
Anticipated expiration: 2030-11-03

Abstract

The utility model relates to an adjustable coke oven chute port structure, which comprises a first chute and a second chute which are arranged in parallel corresponding to the same vertical flue, wherein a nose bridge brick is arranged between the first chute and the second chute; the nose bridge brick is movably arranged at the top of the masonry in the chute area and can be replaced; the nose bridge brick is provided with a plurality of specifications for standby according to different heights. The utility model discloses be portable structure with nose bridge brick by conventional fixed institutional advancement, through the nose bridge brick of changing different specifications, change the shape of ramp mouth and the distance of nose bridge brick top surface apart from the vertical flame path bottom surface to the height of coke oven is to the heating homogeneity when guaranteeing to adopt different varieties gas heating.

Description

Adjustable coke oven inclined passage port structure

Technical Field

The utility model relates to the technical field of coke ovens, in particular to an adjustable coke oven chute port structure for heating a coke oven by adopting coke oven gas or lean gas.

Background

The coke oven chute area is positioned between the top of the regenerator and the bottom of the combustion chamber, is a channel for communicating the regenerator and the combustion chamber, and is used for introducing air and coal gas, distributing the air and the coal gas into each vertical flue and simultaneously discharging waste gas. The chute area has a plurality of channels, and the gas is criss-cross, which is the most complex part of the coke oven. Each vertical flue of the combustion chamber is connected with a corresponding inclined flue: when the coke oven gas is used for heating, the coke oven gas is supplied by a gas pipe brick, and 2 chutes corresponding to the same vertical flue are simultaneously used for supplying air or leading out waste gas; when the lean gas is used for heating, one chute of 2 chutes corresponding to the same vertical flue is used for supplying gas, the other chute is used for supplying air, and waste gas is led out from the 2 chutes after reversing. Usually, the chute mouth is provided with an adjusting brick for adjusting the size of the opening cross section of the chute, and a flame adjusting brick (i.e. a nose bridge brick) is also provided for adjusting the height of the mixing point of the gas and the air.

For the coke oven heated by lean gas, the shape of the nose bridge brick is changed, namely the included angle between a gas inlet and an air inlet is changed, and the height of a mixing point of the gas and the air is changed; the wider the width or the higher the height of the nose bridge brick is, the more difficult the combustible gas and the combustion-supporting gas molecules collide, the slower the combustion is, and the longer the flame is; conversely, the shorter the flame, the faster the combustion. Therefore, the structural design of the nose bridge brick is one of effective methods for improving the heating performance of the coke oven in the height direction.

The Chinese utility model patent with the publication number of CN 205223094U discloses a vertical flue bottom structure for effectively reducing the generation of nitrogen oxides in a coke oven, which adopts a structure that a combustible gas channel or an air channel positioned in front of a combustible gas inlet or an air inlet is vertically or oppositely and obliquely arranged, and the distance between the combustible gas inlet and the air inlet is not less than 70mm or the distance between a nose bridge brick and the bottom of the vertical flue is not less than 80 mm; for the coke oven with the adjusting bricks, the adjusting bricks are arranged to be tightly attached to two sides of the nose bridge brick. Moving up the mixing point of the combustible gas and the air in the vertical flue through the specific structure, and delaying the mixing and burning of the combustible gas and the air; the size of a high-temperature area at the bottom of the vertical flue can be effectively reduced, the highest combustion temperature is reduced, the generation of nitrogen oxides in the vertical flue is reduced, and the emission of nitrogen oxides in a coke oven chimney is reduced from the source. However, its bridge of the nose brick has adopted fixed knot to construct, through the mode of fireclay and ramp district brickwork fixed connection promptly, the ramp district builds by laying bricks or stones the back of accomplishing, and bridge of the nose brick can't change the regulation.

Disclosure of Invention

The utility model provides a coke oven chute mouth structure with adjustable is improved into movable structure with the nose bridge brick by conventional fixed institutional advancement, through the nose bridge brick of changing different specifications, changes the shape of ramp mouth and the distance of nose bridge brick top surface apart from the vertical flame path bottom surface to the height of coke oven is to the heating homogeneity when guaranteeing to adopt different varieties gas heating.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an adjustable coke oven chute port structure comprises a first chute and a second chute which are arranged in parallel corresponding to the same vertical flue, wherein a nose bridge brick is arranged between the first chute and the second chute; the nose bridge brick is movably arranged at the top of the masonry in the chute area and can be replaced; the nose bridge brick is provided with a plurality of specifications for standby according to different heights.

The distance between the top surface of the nose bridge brick and the bottom surface of the vertical flame path is-200-350 mm.

The upper part of the nose bridge brick is of a cuboid structure, and two side faces of the lower part of the nose bridge brick are arc faces extending outwards and downwards respectively; the inclination angles of the arc-shaped surfaces of the nose bridge bricks with different height specifications are different.

And the upper part of the nose bridge brick is provided with a hook hole for realizing the replacement of the nose bridge brick by matching with a hook tool.

The first inclined channel and the second inclined channel are respectively provided with an adjusting brick at one side far away from the nose bridge brick, and the adjusting bricks are provided with multiple specifications for standby use according to different thicknesses.

The adjusting bricks are put on the sloping way masonry bodies on the corresponding sides through shoulders on the two sides to realize positioning and fixing.

The upper portion of adjusting the brick is cuboid structure, and the lower part lateral surface is the arcwall face of inside below extension.

And the upper part of the adjusting brick is provided with a hook hole for realizing the replacement of the adjusting brick by matching with a hook tool.

Compared with the prior art, the beneficial effects of the utility model are that:

the nose bridge brick is improved into a movable structure from a conventional fixed structure, the shape of the inclined channel opening and the distance between the top surface of the nose bridge brick and the bottom surface of the vertical flue are changed by replacing the nose bridge bricks with different specifications, the characteristics of flame combustion when the coke oven adopts different types of coal gas can be adapted, the uniformity of the coke oven in the high-direction heating is effectively adjusted, the difference of the temperature above and below the coke cake and the maturity is improved, the thermal efficiency of the coke oven is improved, and the energy is saved.

Drawings

FIG. 1 is a first schematic structural view of an adjustable coke oven chute port structure of the present invention.

FIG. 2 is a second structural schematic diagram of an adjustable coke oven chute port structure of the present invention.

In the figure: 1. chute one 2, chute two 3/3', nose bridge brick 4, hook hole 5, adjusting brick

Detailed Description

The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:

as shown in fig. 1 and 2, the chute port structure of the coke oven of the present invention comprises a first chute 1 and a second chute 2 which are arranged side by side corresponding to the same vertical flue, wherein a nose bridge brick 3 is arranged between the first chute 1 and the second chute 2; the nose bridge brick 3 is movably arranged at the top of the masonry of the chute area and can be replaced; the nose bridge brick 3 is provided with a plurality of specifications for standby according to different heights.

The distance between the top surface of the nose bridge brick 3 and the bottom surface of the vertical flame path is-200-350 mm.

The upper part of the nose bridge brick 3 is of a cuboid structure, and two side faces of the lower part of the nose bridge brick are arc-shaped faces which extend outwards and downwards respectively; the inclination angles of the arc-shaped surfaces of the nose bridge bricks 3 with different height specifications are different.

The upper part of the nose bridge brick 3 is provided with a hook hole 4 for realizing the replacement of the nose bridge brick 3 by matching with a hook tool.

The first inclined channel 1 and the second inclined channel 2 are respectively provided with an adjusting brick 4 at one side far away from the nose bridge brick 3, and the adjusting bricks 4 are provided with various specifications for standby use according to different thicknesses.

The adjusting bricks 5 are put on the sloping way masonry bodies on the corresponding sides through shoulders on the two sides to realize positioning and fixing.

The upper portion of adjusting brick 5 is cuboid structure, and the lower part lateral surface is the arcwall face of inside below extension.

And the upper part of the adjusting brick 5 is provided with a hook hole for realizing the replacement of the adjusting brick 5 by matching with a hook tool.

When the coke oven with the adjustable coke oven chute port structure is used for building, the nose bridge brick 3 is not fixed by fire clay, but adopts a dry discharge mode; when the variety of the heating gas is changed, the nose bridge brick 3 with the corresponding specification is changed according to the property of the gas; the nose bridge brick 3 and the adjusting brick 5 are replaced by hooking the hook hole 4 by a hook.

The nose bridge bricks 3 with different specifications have different heights and thicknesses (as shown in fig. 1 and 2), and the inclination angles of the arc-shaped surfaces at the two sides are different. The nose bridge brick 3 and the adjusting brick 5 form the shape corresponding to the inclined road junction together.

As shown in figure 1, when the lean gas is used for heating, because the lean gas is low in combustion speed, long in flame, good in uniformity of high-direction heating, uniform in high-direction maturity of coke and not required to be too high in flame combustion height, the nose bridge brick 3 with smaller height is used.

As shown in figure 2, when the coke oven gas is used for heating, because the coke oven gas has high combustion speed and short flame, the lower temperature of the combustion chamber is higher than the upper temperature, the temperature difference from the height of the coke cake to the heating is large, and the lower temperature of the coke cake is higher than the upper temperature, the upper coke is heated insufficiently to cause the maturity difference; at this time, the nose bridge brick 3' with larger height and width is needed to improve the height of the mixing point of the coke oven gas and the air, so as to improve the combustion height of the gas at the bottom of the carbonization chamber and realize the purpose of adjusting the uniformity of the temperature in the vertical direction.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. An adjustable coke oven chute port structure comprises a first chute and a second chute which are arranged in parallel corresponding to the same vertical flue, wherein a nose bridge brick is arranged between the first chute and the second chute; the nose bridge brick is movably arranged at the top of the masonry in the chute area and can be replaced; the nose bridge brick is provided with a plurality of specifications for standby according to different heights.

2. The adjustable coke oven chute port structure as claimed in claim 1, wherein the distance between the top surface of the nose bridge brick and the bottom surface of the vertical flue is-200 to 350 mm.

3. The adjustable coke oven chute port structure as claimed in claim 1, wherein the upper part of the nose bridge brick is a cuboid structure, and both side surfaces of the lower part are arc surfaces respectively extending outwards and downwards; the inclination angles of the arc-shaped surfaces of the nose bridge bricks with different height specifications are different.

4. The adjustable coke oven chute port structure as claimed in claim 1, 2 or 3, wherein the upper part of the nose bridge brick is provided with a hook hole for realizing the replacement of the nose bridge brick in cooperation with a hook tool.

5. The adjustable coke oven chute port structure as claimed in claim 1, wherein the first chute and the second chute are respectively provided with an adjusting brick at one side far away from the nose bridge brick, and the adjusting bricks are provided with a plurality of specifications for standby use according to different thicknesses.

6. The adjustable coke oven chute port structure as claimed in claim 5, wherein the adjusting bricks are positioned and fixed by the shoulder at both sides being lapped on the chute area masonry at the corresponding side.

7. The adjustable coke oven chute port structure as claimed in claim 5, wherein the upper part of the adjusting brick is a cuboid structure, and the outer side surface of the lower part is an arc surface extending inwards and downwards.

8. The adjustable coke oven chute port structure as claimed in claim 5, 6 or 7, wherein the upper part of the adjusting brick is provided with a hook hole for realizing the replacement of the adjusting brick by matching with a hook tool.