CN214867216U - Steel ladle cover device for heating molten iron tank - Google Patents
Steel ladle cover device for heating molten iron tank Download PDFInfo
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- CN214867216U CN214867216U CN202121394855.9U CN202121394855U CN214867216U CN 214867216 U CN214867216 U CN 214867216U CN 202121394855 U CN202121394855 U CN 202121394855U CN 214867216 U CN214867216 U CN 214867216U
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Abstract
The utility model relates to a ladle cover device for hot metal bottle heating, including the ladle cover body, ladle cover body top is equipped with a gas channel and an air channel, and the gas channel is equipped with blast furnace gas intake pipe and an at least coal gas outlet duct, and the air channel is equipped with blast pipe and an at least play tuber pipe, respectively is equipped with a control valve on every coal gas outlet duct and the play tuber pipe, is equipped with at least one combustor on the ladle cover body, and the input of every combustor is connected with a coal gas outlet duct and a play tuber pipe, one side that the ladle cover body lies in every combustor is equipped with an some firearm, is equipped with compressed air pipe and coke oven gas pipe on the some firearm, and coke oven gas pipe lets in the coal gas that comes from the coke oven; the utility model discloses realize utilizing blast furnace surplus coal gas to carry out the on-line heating to the hot metal bottle, practiced thrift the energy, reduced the iron loss, improved steelmaking output.
Description
Technical Field
The utility model relates to a steelmaking technical field specifically is a ladle lid device for hot metal bottle heating.
Background
The smelting capacity of steel making is larger than the production capacity of a blast furnace, in order to reduce the iron-steel ratio, scrap steel is added into a hot metal ladle and is connected into molten iron after being preheated and roasted, the heat of the molten iron is utilized to melt the scrap steel, the iron consumption is reduced, and the steel making yield is increased. Some ladle baking devices adopted at present mainly adopt pure coal gas as fuel, and a large amount of surplus coal gas is generated during the production of a blast furnace, and the part of coal gas can be completely used for heating a hot metal ladle, but because of the components of the blast furnace coal gas, the combustion value of the blast furnace coal gas is not high, and the blast furnace coal gas is easy to extinguish, a device for heating the hot metal ladle by using the blast furnace coal gas does not exist at present.
Disclosure of Invention
The utility model aims at providing a steel ladle cover device for heating a hot metal ladle in order to utilize surplus coal gas of a blast furnace to heat the hot metal ladle.
The utility model has the following concrete scheme: a steel ladle cover device for heating a hot metal ladle comprises a steel ladle cover body, wherein a gas channel and an air channel are arranged at the top of the steel ladle cover body, the gas channel is provided with a blast furnace gas inlet pipe and at least one gas outlet pipe, the air channel is provided with an air supply pipe and at least one air outlet pipe, a control valve is respectively arranged on each gas outlet pipe and each air outlet pipe, at least one combustor is arranged on the steel ladle cover body, the input end of each combustor is connected with one gas outlet pipe and one air outlet pipe, one side of the steel ladle cover body, which is positioned on each combustor, is provided with an igniter, a compressed air pipe and a coke oven gas pipe are arranged on the igniter, and the coke oven gas pipe is filled with gas from a coke oven.
Plasma electrode is equipped with on the top of some firearm, and the lateral wall of some firearm is equipped with a cold air hose, and cold air hose the inner is used for the cooling in stretching into some firearm plasma electrode.
The input of every combustor still is equipped with the combustion-supporting pipe of oxygen, is equipped with the valve on the combustion-supporting pipe of oxygen.
Blast furnace gas intake pipe lateral wall is equipped with a nitrogen gas and sweeps the pipe, is equipped with the valve on the nitrogen gas sweeps the pipe.
Combustor quantity is three and along the circumference equipartition in the middle of the ladle cover body, gas channel sets up in the both sides of ladle cover with the air passage symmetry, and gas channel is equipped with the coal gas outlet duct of three parallels, and the air passage corresponds every coal gas outlet duct and is equipped with a tuber pipe, goes out tuber pipe and butt joint of coal gas outlet duct and is connected to the combustor that corresponds the position jointly.
The working principle of the utility model is as follows: the igniter is used for introducing coke oven gas and compressed air for a long time to serve as ever-burning fire, so that the igniter assists the burner to ignite on one hand, and prevents gas leakage on the other hand; the blast furnace gas enters the gas channel from the gas inlet pipe and then is output from the three gas outlet pipes, and on the other side, the combustion-supporting air enters the air channel and then is output from the three air outlet pipes, and is converged in the corresponding burner and then is ignited by the igniter; each combustor controls the flow of blast furnace gas and combustion-supporting air through a control valve.
The utility model discloses following beneficial effect has: the method realizes the on-line heating of the hot metal ladle by using the surplus gas of the blast furnace, saves energy, reduces iron consumption and improves the steelmaking yield.
Drawings
FIG. 1 is a front view of the structure of the present invention;
FIG. 2 is a top view of FIG. 1;
in the figure: 1-gas channel, 2-nitrogen purging tube, 3-igniter, 4-plasma electrode, 5-cold air tube, 6-compressed air tube, 7-coke oven gas tube, 8-burner, 9-air channel, 10-air supply tube, 11-control valve, 12-oxygen combustion-supporting tube, 13-blast furnace gas inlet tube, 14-gas outlet tube, 15-air outlet tube and 16-steel ladle cover body.
Detailed Description
Referring to fig. 1-2, the present embodiment is a ladle covering device for heating a hot metal ladle, including a ladle covering body 16, the top of the ladle covering body 16 is provided with a gas channel 1 and an air channel 9, the gas channel 1 and the air channel 9 are arranged on both sides of the ladle covering in a vehicle-to-vehicle manner, the gas channel 1 is provided with a blast furnace gas inlet pipe 13 and three parallel gas outlet pipes 14, the air channel 9 is provided with an air supply pipe 10 and three parallel air outlet pipes 15, each gas outlet pipe 14 and air outlet pipe 15 are respectively provided with a control valve 11, the middle of the ladle covering body 16 is provided with three burners 8, the three burners 8 are uniformly distributed along the circumference, each gas outlet pipe 14 is butted with one air outlet pipe 15 and is connected to one burner 8 together, one side of each burner 8 of the ladle covering body 16 is provided with an igniter 3, the igniter 3 is provided with a compressed air pipe 6 and a coke oven gas pipe 7, the coke oven gas pipe 7 is filled with gas from a coke oven.
In the embodiment, a plasma electrode 4 is arranged at the top end of the igniter 3, a cold air pipe 5 is arranged on the side wall of the igniter 3, and the inner end of the cold air pipe 5 extends into the igniter 3 and is used for cooling the plasma electrode 4.
In this embodiment, an oxygen combustion-supporting pipe 12 is further disposed at the input end of each burner 8, and a valve is mounted on the oxygen combustion-supporting pipe 12.
In the embodiment, a nitrogen purging pipe 2 is arranged on the side wall of a blast furnace gas inlet pipe 13, a valve is arranged on the nitrogen purging pipe 2, and when gas leakage occurs and exceeds a set value, a sound and light alarm is given out, on the premise of ensuring safe baking, the system automatically delays (can set delay time) to cut off a control valve 12 to cut off gas supply, and the valve of the nitrogen purging pipe 2 is automatically opened to purge.
Claims (5)
1. The utility model provides a ladle lid device for hot-metal bottle heating, includes ladle lid body, characterized by: the top of the ladle cover body is provided with a gas channel and an air channel, the gas channel is provided with a blast furnace gas inlet pipe and at least one gas outlet pipe, the air channel is provided with an air supply pipe and at least one air outlet pipe, each gas outlet pipe and each air outlet pipe are respectively provided with a control valve, the ladle cover body is provided with at least one burner, the input end of each burner is connected with one gas outlet pipe and one air outlet pipe, one side of the ladle cover body, which is positioned on each burner, is provided with an igniter, the igniter is provided with a compressed air pipe and a coke oven gas pipe, and the coke oven gas pipe is introduced with gas from a coke oven.
2. The ladle covering device for heating the molten iron tank as claimed in claim 1, wherein: the plasma electrode is equipped with on the top of some firearm, and the lateral wall of some firearm is equipped with a cold-blast pipe, and cold-blast pipe inner stretches into in some firearm and is used for cooling the plasma electrode.
3. The ladle covering device for heating the molten iron tank as claimed in claim 1, wherein: the input end of each combustor is also provided with an oxygen combustion-supporting pipe, and the oxygen combustion-supporting pipe is provided with a valve.
4. The ladle covering device for heating the molten iron tank as claimed in claim 1, wherein: the side wall of the blast furnace gas inlet pipe is provided with a nitrogen purging pipe, and the nitrogen purging pipe is provided with a valve.
5. The ladle covering device for heating the molten iron tank as claimed in claim 1, wherein: the number of the burners is three, the burners are uniformly distributed in the middle of the ladle cover body along the circumference, the gas channel and the air channel are symmetrically arranged on two sides of the ladle cover, the gas channel is provided with three parallel gas outlet pipes, the air channel is provided with one air outlet pipe corresponding to each gas outlet pipe, and the air outlet pipes are butted with the gas outlet pipes and are connected to the burners at corresponding positions together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121394855.9U CN214867216U (en) | 2021-06-23 | 2021-06-23 | Steel ladle cover device for heating molten iron tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121394855.9U CN214867216U (en) | 2021-06-23 | 2021-06-23 | Steel ladle cover device for heating molten iron tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214867216U true CN214867216U (en) | 2021-11-26 |
Family
ID=78929782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121394855.9U Active CN214867216U (en) | 2021-06-23 | 2021-06-23 | Steel ladle cover device for heating molten iron tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214867216U (en) |
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2021
- 2021-06-23 CN CN202121394855.9U patent/CN214867216U/en active Active
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