A dry quenching furnace for dry quenching coke process

Abstract

The present invention relates to a dry quenching furnace for a coke dry quenching process, which is characterized in that it at least comprises: a discharge cone hopper, a cooling chamber, a high wear-resistant bottom plate, an inner wall support, an outer wall of a furnace body, a partition wall, an inner wall of a furnace body, an annular flue, a charging port and a pre-storage chamber, wherein the discharge cone hopper is connected to the outer wall of the furnace body through a high wear-resistant bottom plate to form a cavity structure with an opening on the top and an outlet on the bottom; a circle of inner wall support is arranged on the high wear-resistant bottom plate at the lower section of the outer wall of the furnace body, and a circle of partition walls and an annular flue are distributed upward in sequence on a circle of inner wall support at the middle section of the outer wall of the furnace body, the partition wall and the annular flue are confined inside the outer wall of the furnace body and connected as one inside the inner wall of the furnace body, the inner wall support and the inner wall of the furnace body form a pre-storage chamber with a larger bottom and a smaller top; the inner side of the discharge cone hopper forms a cooling chamber. It provides a dry quenching furnace for a coke dry quenching process with a stable and reasonable structure, which can reduce the overall height, increase the service life and reduce the investment.

Description

Technical Field

[0001] The invention relates to a dry quenching furnace for a coke dry quenching process. Background Art

[0002] The CDQ furnace currently used in China generally includes a cooling section, an inclined flue, a straight section of a pre-storage chamber, and a conical section of a pre-storage chamber. The cooling section has the same maximum outer diameter as the blast device. The coke moves downward while cooling, causing serious wear and tear on the furnace body.

[0003] The annular duct is usually located outside the straight section of the pre-storage chamber. During normal operation, the annular duct is under negative pressure. At the same time, affected by the deadweight of the coke, the inner wall of the annular duct bulges and collapses from time to time, seriously affecting the operation safety. The inclined flue is supported by an inner-cantilevered bracket to support the inner wall of the annular flue. The existing inclined flue of the dry quenching coke oven is relatively small in height and has a large inner-cantilevered angle. The bracket bricks are subject to large shear forces and are easily damaged. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a dry quenching furnace for a coke dry quenching process which has a stable and reasonable structure and can reduce the overall height, increase the service life and reduce the investment.

[0005] The object of the present invention is achieved in this way. A dry quenching furnace for dry quenching coke process is characterized in that it at least comprises: a discharge cone hopper, a cooling chamber, a high wear-resistant bottom plate, an inner wall support, an outer wall of a furnace body, a partition wall, an inner wall of a furnace body, an annular flue, a charging port and a pre-storage chamber. The discharge cone hopper is connected to the outer wall of the furnace body through the high wear-resistant bottom plate to form a cavity structure with an opening on the top and an outlet on the bottom; a circle of inner wall support is arranged on the high wear-resistant bottom plate at the lower section of the outer wall of the furnace body, and a circle of partition walls and annular flue are distributed upward in sequence on a circle of inner wall support in the middle section of the outer wall of the furnace body, and the partition wall and the annular flue are confined inside the outer wall of the furnace body and connected as one inside the inner wall of the furnace body, and the inner wall support and the inner wall of the furnace body form a pre-storage chamber that is larger at the bottom and smaller at the top; the inner side of the discharge cone hopper forms a cooling chamber;

[0006] The dry quenching furnace is divided into the outer wall of the furnace body and the inner wall of the furnace body. The inner wall of the furnace body is supported by several inner wall supports, and there are several flue partition walls between the inner and outer walls. There is a conical discharge hopper at the bottom of the furnace body, which has a blast device inside. The connection between the furnace body and the conical discharge hopper is designed with a reduced diameter, and a high wear-resistant bottom plate is used at the reduced diameter part. A coke accumulation area is formed above the high wear-resistant bottom plate to protect the outer wall of the furnace body. There are several inner wall supports inclined inward on the upper part of the high wear-resistant bottom plate to support the inner wall of the furnace body. There are several partition walls on the upper part of some supporting walls to connect the inner and outer walls of the furnace body. The height of the partition wall is slightly lower than the height of the straight section of the inner wall of the furnace body. The annular flue is located between the conical section of the inner wall of the furnace body and the outer wall, and converges at the gas outlet on one side of the furnace body.

[0007] There is a gas outlet on the outer wall of the furnace body.

[0008] The pre-storage chamber comprises a straight section and a tapered section.

[0009] The partition wall is a vertical partition built on the upper part of the inner wall support.

[0010] The cooling chamber is between the discharge cone hopper and the lower edge of the inner wall of the furnace body, and the pre-storage chamber is between the upper part of the cooling chamber and the charging port.

[0011] The annular flue is located between the conical section of the inner wall and the outer wall of the furnace body and converges at the gas outlet on one side of the furnace body; the annular flue covers the entire pre-storage chamber and is arranged outside the straight section and the conical section of the pre-storage chamber. The gas converges outside the conical section of the pre-storage chamber. After the airflow exchanges heat with the red coke in the cooling chamber, it flows upward. Large coke powder particles settle by themselves under the action of gravity, reducing the amount of coke powder in the cooling gas.

[0012] The interior of the inner wall of the furnace body forms a pre-storage chamber.

[0013] The invention is beneficial in that: the invention divides the cooling furnace body into an inner wall and an outer wall, the inner wall is supported by a plurality of supporting walls, and a plurality of flue partition walls are provided between the inner and outer walls. A conical discharge hopper is provided at the lower part of the furnace body, and a blast device is provided inside. The connection between the furnace body and the conical discharge hopper is designed with a reduced diameter, and a high wear-resistant bottom plate is used at the reduced diameter part. A coke accumulation area is formed above the high wear-resistant bottom plate to protect the outer wall of the furnace body. A plurality of inner wall supports inclined inwards are provided on the upper part of the high wear-resistant bottom plate to support the inner wall of the furnace body. A plurality of partition walls are provided on the upper part of some supporting walls to connect the inner and outer walls of the furnace body. The height of the partition wall is slightly lower than the height of the straight section of the furnace body wall. The annular flue is located between the conical section of the inner wall of the furnace body and the outer wall, and converges at the gas outlet on one side of the furnace body. The invention uses coke itself as a wear-resistant material, thereby reducing the wear of the coke on the cooling section of the furnace body. The invention solves the problem that the furnace body of the cooling section of the dry quenching coke oven is easily damaged, and the inner wall of the annular air duct is easily bulged and collapsed, and can greatly improve the operation stability.

[0014] The annular air duct is set outside the straight section and cone section of the pre-storage chamber. The gas is collected outside the cone section of the pre-storage chamber. After the airflow exchanges heat with the red coke in the cooling chamber, it flows upward. In this process, the larger coke powder particles settle by themselves under the action of gravity, reducing the amount of coke powder in the cooling gas. The annular air duct has several partition walls in the straight section of the pre-storage chamber, connecting the inner wall and the outer wall of the furnace body to prevent the inner wall of the straight section of the pre-storage chamber from bulging and collapsing.

[0015] The gas outlet is in the cone section of the pre-storage chamber, the furnace height is reduced, and the investment is reduced. The annular flue covers the entire pre-storage chamber, reducing heat loss and increasing steam production.

[0016] The present invention is further described below in conjunction with specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention;

[0018] Figure 2 This is a 3 / 4 cross-sectional view of the present invention;

[0019] Figure 3 It is a schematic diagram of cold coke filling of the present invention.

[0020] In the figure, 1. discharge cone hopper; 2. cooling chamber; 3. high wear-resistant bottom plate; 4. inner wall support; 5. furnace body outer wall; 6. partition wall; 7. furnace body inner wall; 8. annular flue; 9. charging port; 10 pre-storage chamber; 11. gas outlet. DETAILED DESCRIPTION

[0021] It should be understood that the following embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms fall within the scope limited by the appended claims of the application.

[0022] like Figure 1 and Figure 2 As shown, a dry quenching furnace for dry quenching coke process at least comprises: a discharge cone hopper 1, a cooling chamber 2, a high wear-resistant bottom plate 3, an inner wall support 4, a furnace body outer wall 5, a partition wall 6, a furnace body inner wall 7, an annular flue 8, a charging port 9 and a pre-storage chamber 10. The discharge cone hopper 1 is connected to the furnace body outer wall 5 through the high wear-resistant bottom plate 3 to form a cavity structure with an opening on the top and an outlet on the bottom; a circle of inner wall support 4 is arranged on the high wear-resistant bottom plate 3 at the lower section of the furnace body outer wall 5, and a circle of partition wall 6 and annular flue 8 are distributed upward in sequence on the circle of inner wall support 4 at the middle section of the furnace body outer wall 5, the partition wall 6 and the annular flue 8 are confined in the furnace body outer wall 5 and connected as a whole in the furnace body inner wall 7, the inner wall support 4 and the furnace body inner wall 7 form a pre-storage chamber 10 which is larger at the bottom and smaller at the top; the inner side of the discharge cone hopper 1 forms a cooling chamber 2.

[0023] A gas outlet 11 is provided at the upper section of the outer wall 5 of the furnace body.

[0024] The benefit of this design is that a relatively static coke accumulation zone is formed by utilizing the coke repose angle.

[0025] like Figure 3 As shown, the relatively static coke accumulation zone can reduce the wear of coke on the furnace body during the cooling process.

[0026] Inside the outer wall 5 of the furnace body, the inwardly projecting inner wall supports 4 arranged at intervals on the highly wear-resistant bottom plate 3 are used to support the inner wall 7 of the furnace body.

[0027] Partition walls 6 are built vertically at intervals on the upper part of the inner wall support 4, connecting the inner wall 7 of the furnace body and the outer wall 5 of the furnace body, and are used to stabilize the airflow and prevent the inner wall from bulging. At the same time, during the rising process of the airflow, larger coke powder particles fall into the furnace under the action of gravity.

[0028] The rising airflow is collected in the annular flue 8 and then flows out from the gas outlet 11. The cooling chamber 2 is between the discharge cone 1 and the lower edge of the inner wall 7 of the furnace body, and the pre-storage chamber 10 is between the upper part of the cooling chamber 2 and the charging port 9.

[0029] The present invention divides the cooling furnace body into an inner wall and an outer wall. The inner wall is supported by a number of supporting walls, and there are a number of flue partition walls between the inner and outer walls. There is a conical discharge hopper at the bottom of the furnace body, which has a blast device inside. The connection between the furnace body and the conical discharge hopper is designed with a reduced diameter, and a high wear-resistant bottom plate is used at the reduced diameter part. A coke accumulation area is formed above the high wear-resistant bottom plate to protect the outer wall of the furnace body. There are a number of inner wall supports inclined inwards on the upper part of the high wear-resistant bottom plate to support the furnace body wall. There are a number of partition walls on the upper part of some supporting walls to connect the inner and outer walls of the furnace body. The height of the partition wall is slightly lower than the height of the straight section of the furnace body wall. The annular flue is located between the conical section of the furnace body wall and the outer wall, and converges at the gas outlet on one side of the furnace body.

[0030] The invention is beneficial in that the coke itself is used as a wear-resistant material, thereby reducing the wear of the coke on the cooling section of the furnace body. The invention solves the current problem that the cooling section of the dry quenching coke oven is easy to be damaged, and the inner wall of the annular air duct is easy to swell and collapse, and can greatly improve the operation stability.

[0031] The annular air duct is set outside the straight section and cone section of the pre-storage chamber. The gas is collected outside the cone section of the pre-storage chamber. After the airflow exchanges heat with the red coke in the cooling chamber, it flows upward. In this process, the larger coke powder particles settle by themselves under the action of gravity, reducing the amount of coke powder in the cooling gas. The annular air duct has several partition walls in the straight section of the pre-storage chamber, connecting the inner wall and the outer wall of the furnace body to prevent the inner wall of the straight section of the pre-storage chamber from bulging and collapsing.

[0032] The gas outlet is in the cone section of the pre-storage chamber, the furnace height is reduced, and the investment is reduced. The annular flue covers the entire pre-storage chamber, reducing heat loss and increasing steam production.

[0033] The components and structures not described in detail in this embodiment are well-known components and common structures or common means in the industry and are not described one by one here.

Claims

1. A dry quenching furnace for a coke dry quenching process, characterized in that: at least include: A discharge cone hopper (1), a cooling chamber (2), a high wear-resistant bottom plate (3), an inner wall support (4), a furnace outer wall (5), a partition wall (6), a furnace inner wall (7), an annular flue (8), a charging port (9) and a pre-storage chamber (10); the discharge cone hopper (1) is connected to the furnace outer wall (5) via the high wear-resistant bottom plate (3) to form a cavity structure with an opening at the top and an outlet at the bottom; a circle of inner wall support (4) is arranged on the high wear-resistant bottom plate (3) at the lower section of the furnace outer wall (5); a circle of partition walls (6) and an annular flue (8) are arranged on the inner wall support (4) at the middle section of the furnace outer wall (5) in sequence upward; the partition walls (6) and the annular flue (8) are confined in the furnace outer wall (5) and connected to the furnace inner wall (7); the inner wall support (4) and the furnace inner wall (7) form a pre-storage chamber (10) that is larger at the bottom and smaller at the top; the inner side of the discharge cone hopper (1) forms a cooling chamber (2); The dry quenching furnace is divided into a furnace body outer wall (5) and a furnace body inner wall (7), the furnace body inner wall (7) is supported by a plurality of inner wall supports (4), and a plurality of flue partition walls are provided between the inner and outer walls; a conical discharge hopper is provided at the lower part of the furnace body, and a blast device is provided therein; the connection between the furnace body and the conical discharge hopper is designed with a reduced diameter, and a high wear-resistant bottom plate is used at the reduced diameter part; a coke accumulation area is formed above the high wear-resistant bottom plate to protect the furnace body outer wall; a plurality of inwardly inclined inner wall supports are provided on the upper part of the high wear-resistant bottom plate to support the furnace body inner wall; a plurality of partition walls are provided on the upper part of some of the supporting walls to connect the furnace body and the outer wall; the height of the partition walls is slightly lower than the height of the straight section of the furnace body inner wall; the annular flue is located between the conical section of the furnace body inner wall and the outer wall, and converges at a gas outlet on one side of the furnace body.

2. The dry quenching furnace for coke dry quenching process according to claim 1, characterized in that: A gas outlet (11) is provided at the upper section of the outer wall (5) of the furnace body.

3. The dry quenching furnace for coke dry quenching process according to claim 1, characterized in that: The pre-storage chamber (10) comprises a straight section and a tapered section.

4. The dry quenching furnace for coke dry quenching process according to claim 1, characterized in that: The partition wall (6) is a vertical partition built on the upper part of the inner wall support (4).

5. The dry quenching furnace for coke dry quenching process according to claim 1, characterized in that: The cooling chamber (2) is located between the discharge cone hopper (1) and the lower edge of the inner wall (7) of the furnace body, and the pre-storage chamber (10) is located between the upper part of the cooling chamber (2) and the charging port (9).

6. The dry quenching furnace for coke dry quenching process according to claim 1, characterized in that: The annular flue (8) is located between the conical section of the inner wall and the outer wall of the furnace body and converges at the gas outlet on one side of the furnace body; the annular flue (8) covers the entire pre-storage chamber (10) and is arranged outside the straight section and the conical section of the pre-storage chamber, and the gas is gathered outside the conical section of the pre-storage chamber. After the airflow exchanges heat with the red coke in the cooling chamber, it flows upward, and large coke powder particles settle by themselves under the action of gravity, thereby reducing the amount of coke powder in the cooling gas.

7. The dry quenching furnace for coke dry quenching process according to claim 1, characterized in that: The interior of the inner wall (7) of the furnace body forms a pre-storage chamber (10).

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