CN210595920U - Novel chute structure of dry quenching furnace - Google Patents

Abstract

The utility model relates to a novel chute structure of a dry quenching furnace, which comprises a chute area inner wall, brackets, bracket ring beams and partition walls, wherein the partition walls are at least provided with 2 layers along the height direction and divide the chute area into more than 3 parallel airflow channels; from top to bottom, the gas flow cross-sectional area of each gas flow channel is gradually reduced; the bracket sets up with the partition wall layering one-to-one, and increases progressively from last to the thickness of each layer bracket down gradually, and the edge of 2 adjacent layers of brackets forms boss structure, and the both ends of partition wall are set up on the boss structure that corresponds. The utility model discloses can effectively improve the dry quenching stove throughput, increase ramp district intensity to realized that the division wall location is built by laying bricks or stones, made the division wall fixed firm, be difficult for droing.

Description

Novel chute structure of dry quenching furnace

Technical Field

The utility model relates to a put out stove furnace structure futilely, especially relate to a novel put out stove chute structure futilely.

Background

Dry quenching is a quenching method for cooling red coke by using inert gas in comparison with wet quenching. In the process of dry quenching, red coke is pushed out from a coke oven carbonization chamber and then is loaded into a rotary coke tank, a coke tank truck runs to the lower part of a derrick of a hoist, the hoist lifts the coke tank to load the red coke from the top of a dry quenching furnace, low-temperature inert gas is blown into a red coke layer of the dry quenching furnace by a circulating fan to absorb sensible heat of the red coke, and the cooled coke is discharged from the bottom of the dry quenching furnace.

The dry quenching furnace is generally of a shaft furnace structure with a circular cross section and is divided into a prestoring area, an annular air duct area, a chute area and a cooling area from top to bottom. The chute area is positioned at the lower part of the annular air duct area and the upper part of the cooling area, and low-temperature circulating gas entering from a gas supply device at the bottom of the dry quenching furnace absorbs the sensible heat of red coke and then is converged into the annular air duct area through the chute area to be discharged. When the circulating gas flows through the cooling section of the dry quenching furnace and enters the annular air duct from the chute area, a part of coke at the chute opening can be blown up, so that the surface of the coke is raised, and the phenomenon of coke floating at the chute opening of the dry quenching furnace is caused. The coke floating is a key factor for limiting the processing capacity of the dry quenching furnace, the early dry quenching furnaces are all of monoclinic structure, the processing capacity is small, the strength of the chute area is poor, and the corbels are easy to damage in the production process.

For a period of time, researchers at home and abroad have conducted various researches on the structure of the chute, for example, "a separating device" disclosed in chinese patent publication No. CN107502375A and "coke dry fire extinguishing apparatus" disclosed in chinese patent publication No. CN101827915B, all of which are implemented by arranging a suspended separating device in the chute area, so that the thickness of coke accumulated in the chute area is remarkably reduced, and the resistance of a coke layer is reduced; chinese patent publication No. CN208791553U discloses a "divided chute device for coke dry quenching", which uniformly divides a chute area by an arched partition wall so as to improve the gas flow rate in the chute area, effectively suppress the floating of coke, and prolong the service life of corbels in the chute area. According to the technical scheme disclosed by the invention, the effect is not ideal through simulation and semi-industrial tests, and the upper part of the suspended separation device is easy to damage after the suspended separation device is used for a period of time; the method of uniformly separating the inclined channel by the arched partition wall causes that the gas distribution of the upper and lower air channels after being divided is not uniform, the processing capacity is not increased, and the inclined arch is not easy to position and fall off when being built, and the structural strength is not enough.

Disclosure of Invention

The utility model provides a novel put out stove chute structure futilely can effectively improve and put out stove throughput futilely, increases chute district intensity to realized that the division wall location is built by laying bricks or stones, made the division wall fixed firm, be difficult for droing.

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

a novel chute structure of a dry quenching furnace comprises a chute area inner wall, brackets, bracket ring beams and partition walls, wherein the partition walls are at least provided with 2 layers in the height direction and divide the chute area into more than 3 parallel airflow channels; from top to bottom, the gas flow cross-sectional area of each gas flow channel is gradually reduced; the bracket sets up in segmentation, and every section corresponds the airflow channel of co-altitude not, and increases progressively from last to the thickness of each section bracket down gradually, and the edge of 2 adjacent sections brackets forms boss structure, and the both ends of divider wall are set up on corresponding boss structure.

The dividing walls are arranged in 2 layers along the height direction and divide the chute area into 3 parallel airflow channels; and from top to bottom, the distance A between the bracket ring beam and the upper partition wall is less than the distance B between the upper partition wall and the lower partition wall is less than the distance C between the lower partition wall and the inner wall of the chute area.

A：B：C＝(1.5～1.2)：(0.9～1.1)：(0.8～0.5)。

The corbel ring beam is of a double-layer arched beam structure, namely the corbel ring beam is composed of 2 layers of arched beams built along the height direction, and each layer of arched beam is composed of beam arch foot bricks arranged at two ends and a plurality of beam arch top bricks arranged in the middle.

The partition wall is built by multiple layers of arched wall bodies, two ends of each layer of arched wall body are respectively provided with a wall body arch foot brick, and the wall body arch foot bricks are matched with boss structures on the brackets to form surface support; the middle part of each layer of the arched wall body is provided with a plurality of wall body arch top bricks.

And a sliding structure is arranged between the partition wall and the bracket and consists of a stainless steel plate and oil paper.

The two sides of each bracket are respectively provided with a groove or a step platform structure, and the two sides of the partition wall are matched with the groove or the step platform structure to realize positioning and supporting.

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

1) the coke dry quenching chute structure of the utility model adopts an unequal partition structure, which can effectively adjust the distribution of the circulating air flow of the coke dry quenching chute port and avoid the problems of local overlarge resistance of the chute port, high dust content of the circulating air and the like caused by uneven distribution of the circulating air at the chute port;

2) the treatment capacity of the dry quenching furnace is improved, and the increase of the gas temperature at the inlet of the boiler and the coke discharging temperature can be effectively avoided;

3) the scouring of the high-temperature expansion joint, a primary dust remover and a boiler system caused by medium and small coke brought into the circulating gas is avoided;

4) the division wall is positioned and built, so that the division wall is firmly fixed and is not easy to fall off.

Drawings

Fig. 1 is a schematic structural diagram of a novel chute structure of a dry quenching furnace according to the present invention.

Fig. 2 is a view D-D in fig. 1.

In the figure: 1. chute district interior wall 2, bracket 21, upper bracket 22, middle bracket 23, lower bracket 3, bracket ring beam 31, beam arch foot brick 32, beam arch top brick 4, partition wall 41, upper partition wall 42, lower partition wall 43, wall arch foot brick 44, wall arch top brick 5, boss structure 6, groove or step structure 7, sliding structure

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 novel chute structure of the dry quenching furnace of the present invention comprises a chute area inner wall 1, brackets 2, bracket ring beams 3 and a partition wall 4, wherein the partition wall 4 is at least provided with 2 layers along the height direction to divide the chute area into more than 3 parallel air flow channels; from top to bottom, the gas flow cross-sectional area of each gas flow channel is gradually increased; 2 segmentation settings of bracket, every section corresponds the airflow channel of co-altitude not, and increases progressively from last to each section bracket 21, 22, 23's thickness down gradually, and the edge of 2 adjacent sections brackets forms boss structure 5, and the both ends of divider wall 4 are taken and are established on corresponding boss structure 5.

The partition walls 4 are arranged in 2 layers along the height direction and divide the chute area into 3 parallel airflow channels; and from top to bottom, the distance A between the bracket ring beam 3 and the upper partition wall 41 is less than the distance B between the upper partition wall 41 and the lower partition wall 42 is less than the distance C between the lower partition wall 42 and the inner wall 1 of the chute area.

A：B：C＝(1.5～1.2)：(0.9～1.1)：(0.8～0.5)。

The corbel ring beam 3 is of a double-layer arched beam structure, namely, the corbel ring beam is composed of 2 layers of arched beams built in the height direction, and each layer of arched beam is composed of beam arch foot bricks 31 arranged at two ends and a plurality of beam arch top bricks 32 arranged in the middle.

The partition wall 4 is built by a plurality of layers of arched wall bodies, two ends of each layer of arched wall body are respectively provided with a wall body arch foot brick 43, and the wall body arch foot bricks 43 are matched with the boss structures 5 on the brackets 2 to form surface support; the middle part of each layer of arched wall body is provided with a plurality of wall body arch top bricks 44.

And a sliding structure 7 is arranged between the partition wall 4 and the bracket 2, and the sliding structure 7 consists of a stainless steel plate and oil paper.

Grooves or step structures 6 are respectively arranged on two sides of each bracket section 21, 22 and 23, and two sides of the partition wall 4 are matched with the grooves or step structures 6 to realize positioning and supporting.

Take the chute structure of three divisions as an example, a novel put out stove chute structure futilely, be located between stove annular wind channel and the cooling space futilely put out, including chute district inner wall 1, bracket 2, upper strata divider wall 41, lower floor's divider wall 42 and bracket ring roof beam 3. The plurality of brackets 2 are uniformly distributed along the circumferential direction of the dry quenching furnace, and the brackets 2 are of a layer-by-layer overhanging structure along the height direction; the upper layer separation wall 41 and the lower layer separation wall 42 are positioned between the adjacent 2 corbels 2, and divide the airflow channel divided by the 2 corbels 2 into an upper, a middle and a lower 3 parallel spaces; the bracket ring beam 3 is positioned at the top of the adjacent 2 brackets 2 and is connected with the 2 brackets 2; the chute area inner wall 1, the bracket 2, the upper partition wall 41, the lower partition wall 42 and the bracket ring beam 3 are all built by refractory bricks.

As shown in fig. 1, the bracket 2 is also in a cantilever structure and is divided into 3 sections corresponding to 3 parallel spaces, the width of the upper section bracket 21 is smaller than that of the middle section bracket 22, and the width of the middle section bracket 22 is smaller than that of the lower section bracket 23, i.e. the dimensions H1 < H2 < H3 shown in fig. 1.

Due to the different widths of the brackets 21, 22 and 23, boss structures 5 are formed between the adjacent 2 brackets, and the boss structures 5 are used for positioning the upper partition wall 41 and the lower partition wall 42, namely, the bottoms of the upper partition wall 41 and the lower partition wall 42 are respectively supported on the corresponding boss structures 5.

As shown in fig. 2, the sectional areas of the 3 parallel spaces divided by the upper and lower banks 41 and 42 are not equal, that is, the chute area is not of a uniform structure, the distance from the corbel ring beam 3 to the upper bank 41 is smaller than the distance from the upper bank 41 to the lower bank 42, the distance from the upper bank 41 to the lower bank 42 is smaller than the distance from the lower bank 42 to the inner wall 1 of the chute area, that is, the dimension a < B < C shown in fig. 2. Further, A: b: c ═ 1.5-1.2: (0.9-1.1): (0.8 to 0.5), wherein preferably, A: b: c ═ 1.2: 1: 0.8, the above-mentioned proportional relation is based on three-dimensional modeling simulation reality operating mode and reachs after the analysis, restricts through above-mentioned proportion, ensures that chute district lower part amount of wind is greater than the upper portion amount of wind to produce the vortex effect, prevent that chute mouth coke from floating the phenomenon, thereby be favorable to strengthening the cooling effect of dry quenching stove.

As shown in fig. 1, the upper and lower division walls 41 and 42 are constructed by combining 3 layers of arch structural walls, each of which is constructed by a plurality of special-shaped refractory bricks.

Sliding structures 7 for digesting and expanding are arranged between the upper layer separating wall 41 and the lower layer separating wall 42 and the corbel 2, and the sliding structures 7 are made of stainless steel plates and oil paper.

The bracket ring beam 3 is formed by building a double-layer arched structure beam in a combined mode, and each layer of arched structure beam is formed by building a plurality of special-shaped refractory bricks.

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 (7)

1. A novel chute structure of a dry quenching furnace comprises a chute area inner wall, brackets, bracket ring beams and partition walls, and is characterized in that the partition walls are at least provided with 2 layers along the height direction and divide the chute area into more than 3 parallel airflow channels; from top to bottom, the gas flow cross-sectional area of each gas flow channel is gradually increased; the bracket sets up in segmentation, and every section corresponds the airflow channel of co-altitude not, and increases progressively from last to the thickness of each section bracket down gradually, and the edge of 2 adjacent sections brackets forms boss structure, and the both ends of divider wall are set up on corresponding boss structure.

2. The novel chute structure of the dry quenching furnace as claimed in claim 1, wherein the dividing wall is provided with 2 layers along the height direction to divide the chute into 3 parallel airflow channels; and from top to bottom, the distance A between the bracket ring beam and the upper partition wall is less than the distance B between the upper partition wall and the lower partition wall is less than the distance C between the lower partition wall and the inner wall of the chute area.

3. A novel dry quenching furnace chute structure according to claim 2, characterized in that a: b: c ═ 1.5-1.2: (0.9-1.1): (0.8-0.5).

4. A novel dry quenching furnace chute structure according to claim 1 or 2, characterized in that the corbel ring beam is a double-layer arched beam structure, i.e. composed of 2 layers of arched beams laid in the height direction, each layer of arched beam is composed of beam arch foot bricks arranged at both ends and a plurality of beam arch top bricks arranged in the middle.

5. A novel dry quenching furnace chute structure as claimed in claim 1, wherein the dividing wall is built by a plurality of layers of arched walls, wall arch foot bricks are respectively arranged at two ends of each layer of arched wall, and the wall arch foot bricks are matched with boss structures on the brackets to form surface support; the middle part of each layer of the arched wall body is provided with a plurality of wall body arch top bricks.

6. A novel chute structure for a dry quenching furnace as claimed in claim 1, wherein a sliding structure is provided between the dividing wall and the bracket, and the sliding structure is composed of stainless steel plates and oiled paper.

7. A novel chute structure of a dry quenching furnace as claimed in claim 1, wherein two sides of each bracket are respectively provided with a groove or a step structure, and two sides of the partition wall are matched with the groove or the step structure to realize positioning and supporting.

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