CN219032072U

CN219032072U - Furnace end flame path supplementary heating device during blast furnace gas heating

Info

Publication number: CN219032072U
Application number: CN202223399716.2U
Authority: CN
Inventors: 郑猛; 张智; 何彬彬; 王康; 王军平
Original assignee: Tianjin Iron Works Co ltd
Current assignee: Tianjin Iron Works Co ltd
Priority date: 2022-12-19
Filing date: 2022-12-19
Publication date: 2023-05-16
Anticipated expiration: 2032-12-19

Abstract

The utility model discloses a furnace end flame path supplementary heating device used during blast furnace gas heating, which belongs to the technical field of coke oven gas heating, and comprises a coke oven gas main pipe, and is characterized by also comprising a machine side vertical calandria and a coke side vertical calandria used for supplementary heating; wherein: the tail end of the machine side vertical calandria is provided with a machine side drainage valve; a coke side drainage valve is arranged at the tail end of the coke side vertical calandria; the coke oven gas main pipe is communicated with the coke side vertical pipes through M coke side transverse pipes, the coke oven gas main pipe is communicated with the machine side vertical pipes through M machine side transverse pipes, and a small pore plate for installing and adjusting gas flow is arranged between the coke side transverse pipes and the coke side vertical pipes; a small pore plate for installing and adjusting the gas flow is arranged between the lateral calandria and the lateral vertical calandria; blind plates are blocked on the branch pipes of the coke side transverse calandria and the machine side transverse calandria; a plug is arranged on one side of the branch pipe, which corresponds to the branch pipe, and N iron wires for adjusting the flow area are arranged at one end of the branch pipe.

Description

Furnace end flame path supplementary heating device during blast furnace gas heating

Technical Field

The utility model belongs to the technical field of coke oven gas heating, and particularly relates to a furnace end flame path supplementary heating device during blast furnace gas heating.

Background

The coke oven furnace end is positioned at the end part of the coke oven, and the temperature fluctuation of the furnace end is large and the adjustment is difficult due to the factors of heat dissipation of the coke oven furnace end part, heat dissipation and tightness of a heat accumulation chamber sealing wall, frequent furnace door opening in production operation and the like. Particularly, when the coke oven is heated by using blast furnace gas, the difficulty of temperature regulation of a flame path positioned at the coke side of the machine is particularly increased due to different methods for regulating the blast furnace gas and the coke oven gas. The problems in production are more serious, especially in the case of aging of coke ovens, such as blockage of chute and regenerator. The problem is that not only uniformity of the horizontal temperature is required, but also it is difficult to achieve the requirement in terms of adjustment. The most obvious problem is that the temperature of the fire channel of the furnace end is easy to be low, and the requirements of the fire channel after the temperature of the standard fire channel is increased are more difficult to adjust. Many of the burners Jiao Pian are used for producing coke, so that not only the yield and quality of the coke are affected, but also the smooth operation of pushing the coke is affected, the coke pushing is difficult, and the labor intensity of production operators is also increased. The temperature of the burner is low, the phenomenon of the burner Jiao Sheng frequently occurs, and the burner supplementary heating system is needed to be modified.

Disclosure of Invention

The utility model discloses a furnace end flame path supplementary heating device for heating blast furnace gas, which aims to solve the technical problems in the prior art, adopts a furnace end flame path supplementary heating method to increase the temperature and solves the problem of low temperature of a furnace end flame path of a coke oven.

The utility model aims to provide a furnace end flame path supplementary heating device for heating blast furnace gas, which comprises a coke oven gas main pipe, a machine side vertical calandria and a coke side vertical calandria for supplementary heating; wherein: the tail end of the machine side vertical calandria is provided with a machine side drainage valve; a coke side drainage valve is arranged at the tail end of the coke side vertical calandria; the coke oven gas main pipe is communicated with the coke side vertical pipes through M coke side transverse pipes, the coke oven gas main pipe is communicated with the machine side vertical pipes through M machine side transverse pipes, and a small pore plate for installing and adjusting gas flow is arranged between the coke side transverse pipes and the coke side vertical pipes; a small pore plate for installing and adjusting the gas flow is arranged between the lateral calandria and the lateral vertical calandria; blind plates are blocked on the branch pipes of the coke side transverse calandria and the machine side transverse calandria; a plug is arranged on one side of the branch pipe corresponding to the branch pipe, and N iron wires for adjusting the flow area are arranged at one end of the branch pipe; m and N are natural numbers greater than 1.

Preferably, the coke oven gas main pipe is respectively communicated with the lateral row pipe and the focal lateral row pipe through three-way valves.

The utility model has the advantages and positive effects that:

after the furnace end flame path is used for supplementing the heating device, the temperatures of the vertical flame paths of the furnace end of the coke oven machine and the furnace end at the two sides of the coke are obviously improved, the phenomenon that coke is generated by the coking chamber machine and the furnace end of the coke side is solved, and the coke pushing operation is smoothly carried out, so that the quality and the yield of the coke are ensured. The device has the advantages of low reconstruction cost, simple process and flexible operation.

Drawings

FIG. 1 is a plan view of a coke oven gas main pipe, a horizontal gauntlet and a vertical gauntlet according to a preferred embodiment of the present utility model;

FIG. 2 is a diagram showing the positional relationship of vertical row pipes, branch pipes and vertical flame paths according to a preferred embodiment of the present utility model;

FIG. 3 is a tool diagram for regulating gas flow in accordance with a preferred embodiment of the present utility model;

wherein: 1. a coke oven gas main pipe; 2. a coke side transverse calandria; 3. a lateral calandria of the machine side; 4. a side vertical calandria; 5. a coke side vertical calandria; 6. a first flame path; 7. thirty-two fire paths; 8. a machine side drain valve; 9. a coke side drain valve; 10. a branch pipe; 11. plugging; 12. a vertical flame path; 13. and (3) an iron wire.

Detailed Description

For a further understanding of the nature, features, and efficacy of the present utility model, the following examples are set forth in order to provide a further understanding of the utility model, and are intended to be described in connection with the accompanying drawings:

the following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. Based on the technical solutions of the present utility model, all other embodiments obtained by a person skilled in the art without making any creative effort fall within the protection scope of the present utility model.

In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "top", "bottom", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Referring to fig. 1 to 3, a furnace end flame path supplementary heating device for heating blast furnace gas comprises a coke oven gas main pipe 1, a machine side vertical calandria 4 and a coke side vertical calandria 5 for supplementary heating; wherein: a machine side drain valve 8 is arranged at the tail end of the machine side vertical drain pipe 4; the tail end of the coke side vertical pipe 5 is provided with a coke side water discharge valve 9; the coke oven gas main pipe 1 is communicated with the coke side vertical pipe 5 through M coke side transverse pipes 2, the coke oven gas main pipe 1 is communicated with the machine side vertical pipe 4 through M machine side transverse pipes 3, and a small pore plate for installing and adjusting gas flow is arranged between the coke side transverse pipes 2 and the coke side vertical pipe 5; a small pore plate for installing and adjusting the gas flow is arranged between the lateral calandria 3 and the lateral vertical calandria 4; blind plates are blocked on the branch pipes 10 of the coke side transverse row pipes 2 and the machine side transverse row pipes 3; a plug 11 is arranged on one side of the branch pipe 10, and N iron wires 13 for adjusting the flow area are arranged at one end of the branch pipe 10; m and N are natural numbers greater than 1.

The coke oven gas main pipe 1 is respectively communicated with the lateral row pipe 3 of the machine side and the lateral row pipe 2 of the coke side through a three-way valve.

The implementation process is as follows:

1. the coke oven gas main pipe 1 is communicated with the coke side transverse exhaust pipe 2 through a three-way valve and the side transverse exhaust pipe 3. The small blind plates are all plugged on the branch pipes 10 of the 2-31 fire paths (in this application, a 32 fire path coke oven is taken as an example) of the coke side transverse exhaust pipe 2 and the machine side transverse exhaust pipe 3 for supplying coal gas, and small pore plates for adjusting the coal gas flow are arranged on the first fire path 6 and the thirty-two fire paths 7.

2. The coke side horizontal pipe 2, the machine side horizontal pipe 3, the machine side vertical pipe 4 and the coke side vertical pipe 5 are connected in correspondence with each other.

3. The first flame path 6 and the thirty-second flame path 7 of other combustion chambers are respectively connected with the corresponding vertical calandria.

4. After the pipeline connection, a coke oven gas flow path of the supplemental heating system is completed, and the coke oven gas main pipe 1 is communicated with a first fire channel 6 of the machine side furnace end through a machine side transverse calandria 3 and a machine side vertical calandria 4; the coke oven gas main pipe 1 is communicated with a thirty-two fire channel 7 at the coke side furnace head through a coke side transverse calandria 2 and a coke side vertical calandria 5.

5. The tail ends of each section of vertical pipes (the machine side vertical pipe 4 and the coke side vertical pipe 5) are provided with a machine side drain valve 8 and a coke side drain valve 9, and the vertical pipes are required to be set to a certain inclination during installation, so that condensed water in the pipeline is conveniently discharged, and the corrosion to the gas pipeline is reduced.

6. And (3) performing test operation on the heated gas pipeline, checking the gas leakage point, and putting the gas pipeline into use after the gas leakage point is qualified through a tightness test.

7. During normal production, the reversing frequency of blast furnace gas heating needs to be consistent with the reversing frequency of coke oven gas supplementary heating.

8. The corresponding side of the branch pipe 10 is opened with the plug 11, the flow area of the gas channel in the branch pipe is increased or decreased by increasing or decreasing the number of iron wires 13 bent at one end in the small branch pipe 10 of the transverse calandria, and finally, the coke oven gas flow in each vertical flame path can be regulated. Considering the size and construction of the branch pipe 10, the length of the iron wire should not exceed 15 cm, the length of the iron wire on the bending side should be about 1 cm, the length should not be too long, and the diameter of the iron wire should be controlled to be about 2 mm.

9. The amount of the gas which is additionally heated is timely regulated according to the combustion temperature condition of the coke oven gas at the top of the furnace end vertical flame path 12, and the monitoring is enhanced, so that high-temperature accidents are prevented.

The foregoing description is only of the preferred embodiments of the present utility model, and is not intended to limit the utility model in any way, but any simple modification, equivalent variation and modification of the above embodiments according to the technical principles of the present utility model are within the scope of the technical solutions of the present utility model.

Claims

1. The furnace end flame path supplementary heating device during blast furnace gas heating comprises a coke oven gas main pipe (1) and is characterized by also comprising a machine side vertical calandria (4) and a coke side vertical calandria (5) for supplementary heating; wherein: the tail end of the machine side vertical calandria (4) is provided with a machine side drain valve (8); a coke side drainage valve (9) is arranged at the tail end of the coke side vertical pipe (5); the coke oven gas main pipe (1) is communicated with the coke side vertical discharge pipes (5) through M coke side horizontal discharge pipes (2), the coke oven gas main pipe (1) is communicated with the machine side vertical discharge pipes (4) through M machine side horizontal discharge pipes (3), and a small pore plate for installing and adjusting the gas flow is arranged between the coke side horizontal discharge pipes (2) and the coke side vertical discharge pipes (5); a small pore plate for installing and adjusting the gas flow is arranged between the lateral calandria (3) and the lateral vertical calandria (4); blind plates are blocked on the branch pipes (10) of the coke side transverse row pipes (2) and the machine side transverse row pipes (3); a plug (11) is arranged on one side of the branch pipe (10) corresponding to the branch pipe, and N iron wires (13) for adjusting the flow area are arranged at one end of the branch pipe (10); m and N are natural numbers greater than 1.

2. The burner flame path supplementary heating device for heating blast furnace gas according to claim 1, wherein the main coke oven gas pipe (1) is respectively communicated with a lateral row pipe (3) and a focal lateral row pipe (2) through a three-way valve.