CN215365626U - Coal gas sulfide removing device and blast furnace - Google Patents
Coal gas sulfide removing device and blast furnace Download PDFInfo
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- CN215365626U CN215365626U CN202120826396.0U CN202120826396U CN215365626U CN 215365626 U CN215365626 U CN 215365626U CN 202120826396 U CN202120826396 U CN 202120826396U CN 215365626 U CN215365626 U CN 215365626U
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Abstract
The utility model discloses a device for removing sulfides from coal gas and a blast furnace, and belongs to the technical field of blast furnace gas purification. The coal gas sulfide removal device comprises: a gas pipeline, an alkali liquor preparation mechanism and an alkali liquor spray gun; the alkali liquor spray gun is arranged in the gas pipeline; the liquid inlet of the alkali liquor spray gun is communicated with the alkali liquor preparation mechanism. The device for removing sulfides from the coal gas and the blast furnace can remove sulfides from the coal gas produced by the blast furnace, reduce sulfur dioxide components in flue gas generated during combustion of the blast furnace hot blast stove, ensure that the emission of environmental protection indexes reaches the standard, and ensure normal production of the blast furnace in a steel plant.
Description
Technical Field
The utility model relates to the technical field of blast furnace gas purification, in particular to a gas sulfide removal device and a blast furnace.
Background
Blast furnace gas is a byproduct gas generated in iron making of blast furnaces in iron and steel plants, is an important secondary energy source, and has wide application in various industrial furnaces and kilns in the iron and steel plants, and particularly, most of fuel gas used by blast furnace hot blast furnaces is blast furnace gas.
In recent years, because the emission indexes of harmful flue gas components are increasingly controlled strictly due to the atmospheric pollution limitation of steel plants, the proportion of the harmful gas components such as sulfide in the existing blast furnace gas is more and more strict, and the exhaust flue gas of a hot blast stove is required to be not more than 50mg/Nm3. However, the main sulfide content in blast furnace gas is high, and the average content is 80mg/Nm3。
The blast furnace gas is supplied to a blast furnace hot blast stove, and the volume percentage value of sulfur dioxide in flue gas after the combustion of the blast furnace hot blast stove exceeds the standard, so that the environmental protection index emission of the blast furnace is not up to the standard, and the normal production of the blast furnace of a steel plant is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model provides a device for removing sulfide from coal gas and a blast furnace, which solve or partially solve the technical problems that in the prior art, the coal gas is supplied to a blast furnace hot blast stove, the volume percentage value of sulfur dioxide in flue gas after the combustion of the blast furnace hot blast stove exceeds the standard, the environmental protection index emission of the hot blast stove is not up to the standard, and the normal production of the blast furnace of a steel plant is influenced.
In order to solve the technical problem, the utility model provides a device for removing sulfide from coal gas, which comprises: a gas pipeline, an alkali liquor preparation mechanism and an alkali liquor spray gun; the alkali liquor spray gun is arranged in the gas pipeline; the liquid inlet of the alkali liquor spray gun is communicated with the alkali liquor preparation mechanism.
Further, the alkali liquor preparation mechanism comprises: the device comprises a box body, a water delivery pipe and an alkali powder delivery pipe; the water delivery pipe is communicated with the water inlet of the box body; the alkali powder conveying pipe is communicated with a feeding hole of the box body; the liquid outlet of the box body is communicated with the liquid inlet of the alkali liquor spray gun.
Further, a flowmeter is arranged on the water conveying pipe.
Further, a first cut-off valve is arranged on the water conveying pipe.
Further, a stirrer is arranged in the box body.
Further, the coal gas sulfide removal device also comprises: an alkali liquor conveying mechanism; the liquid inlet end of the alkali liquor conveying mechanism is communicated with the alkali liquor preparation mechanism, and the liquid outlet end of the alkali liquor conveying mechanism is communicated with the liquid inlet of the alkali liquor spray gun.
Further, the lye conveying mechanism comprises: an alkali liquor conveying pipe and a pump; the pump is arranged in the alkali liquor preparation mechanism; the liquid inlet end of the alkali liquor conveying pipe is communicated with the pump, and the liquid outlet end of the alkali liquor conveying pipe is communicated with the liquid inlet of the alkali liquor spray gun.
Further, a pressure sensor and a second cut-off valve are arranged on the alkali liquor conveying pipe; and the pressure sensor and the second cut-off valve are both connected with the controller.
The application also provides a blast furnace, which comprises the coal gas sulfide removal device.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
the alkali liquor spray gun is arranged in the gas pipeline, and the liquid inlet of the alkali liquor spray gun is communicated with the alkali liquor preparation mechanism, so that blast furnace gas is supplied to the hot blast stove through the gas pipeline, the alkali liquor spray gun conveys the alkali liquor prepared by the alkali liquor preparation mechanism into the gas pipeline, the alkali liquor is atomized in the gas pipeline, the atomized alkali liquor is fully contacted with sulfide, complete reaction of the alkali liquor and the sulfide is ensured, the sulfide in the gas produced by the blast furnace can be removed, the volume percentage value of sulfur dioxide in the flue gas after combustion of the hot blast stove is reduced, the emission of environmental protection indexes reaches the standard, and normal production of the blast furnace in a steel plant is ensured.
Drawings
Fig. 1 is a schematic structural diagram of a coal gas sulfide removal device provided by an embodiment of the utility model.
Detailed Description
Referring to fig. 1, an embodiment of the present invention provides a coal gas sulfide removal device, including: a gas pipeline 1, an alkali liquor preparation mechanism 2 and an alkali liquor spray gun 3.
The alkali liquor spray gun 3 is arranged in the gas pipeline 1.
The liquid inlet of the alkali liquor spray gun 3 is communicated with the alkali liquor preparation mechanism 2.
This application embodiment is because alkali lye spray gun 3 sets up in gas piping 1, the inlet of alkali lye spray gun 3 constructs the intercommunication with alkali lye preparation machine 2, so, blast furnace gas supplies with for the hot-blast stove through gas piping 1, alkali lye spray gun 3 carries the alkali lye of preparing 2 preparation of mechanism to gas piping 1 in, alkali lye atomizes in gas piping 1, alkali lye after the atomizing fully contacts with the sulphide, guarantee that alkali lye and sulphide reaction are complete, sulphide in the coal gas that can desorption blast furnace output, reduce the sulfur dioxide volume percentage numerical value in the flue gas after the burning of hot-blast stove, guarantee that the environmental protection index discharges up to standard, guarantee the normal growth of steel plant blast furnace.
Specifically, the alkali liquor preparation mechanism 2 includes: a box body 2-1, a water delivery pipe 2-2 and an alkali powder delivery pipe 2-3.
The water delivery pipe 2-2 is communicated with the water inlet of the box body 2-1.
The alkali powder conveying pipe 2-3 is communicated with a feed inlet of the box body 2-1.
The liquid outlet of the box body 2-1 is communicated with the liquid inlet of the alkali liquor spray gun.
When preparing alkali liquor, supplying water to the box body 2-1 through the conveying pipe 2-2, supplying alkali powder to the box body 2-1 through the alkali powder conveying pipe 2-3, and mixing the alkali powder and the water in the box body 2-1 to obtain the alkali liquor.
The water delivery pipe 2-2 is provided with a flowmeter 2-5. The water delivery pipe 2-2 is provided with a first cut-off valve 2-4.
When the alkali powder is supplied to the box body 2-1, the alkali powder is weighed in advance, the weight of the alkali powder is obtained, and the weight of the water to be added is obtained according to the concentration of the alkali liquor and the weight of the alkali powder. When the conveying pipe 2-2 supplies water to the box body 2-1, the weight of the water to be added is input into the controller, the flow meter 2-5 sends a flow signal to the controller, the controller obtains the weight of the water entering the box body 2-1 according to the flow signal, the weight of the water entering the box body 2-1 is compared with the weight of the water to be added, when the weight of the water entering the box body 2-1 reaches the weight of the water to be added, the controller sends a cut-off signal to the first cut-off valve 2-4, the first cut-off valve 2-4 is closed, the conveying pipe 2-2 stops supplying water to the box body 2-1, and the concentration of the obtained alkali liquor is guaranteed to meet the requirement.
A stirrer 2-6 is arranged in the box body 2-1.
When the alkali powder and the water enter the box body 2-1, the stirrer 2-6 is started to ensure that the alkali powder and the water are fully mixed.
Specifically, the coal gas sulfide removal device further comprises: and an alkali liquor conveying mechanism 4.
The liquid inlet end of the alkali liquor conveying mechanism 4 is communicated with the alkali liquor preparation mechanism 2, and the liquid outlet end of the alkali liquor conveying mechanism 4 is communicated with the liquid inlet of the alkali liquor spray gun 3.
The alkali liquor conveying mechanism 4 comprises: an alkali liquor delivery pipe 4-1 and a pump 4-2.
The pump 4-2 is arranged in the alkali liquor preparation mechanism 2.
The liquid inlet end of the alkali liquor conveying pipe 4-1 is communicated with the pump 4-2, and the liquid outlet end of the alkali liquor conveying pipe 4-1 is communicated with the liquid inlet of the alkali liquor spray gun 3.
When the gas in the gas pipeline 1 needs to be subjected to sulfide removal, the pump 4-2 is started, the pump 4-2 conveys the alkali liquor in the alkali liquor preparation mechanism 2 to the alkali liquor spray gun 3 through the alkali liquor conveying pipe 4-1, and the alkali liquor is sprayed into the gas pipeline 1 through the alkali liquor spray gun 3.
A pressure sensor 4-3 and a second cut-off valve 4-4 are arranged on the alkali liquor conveying pipe 4-1; the pressure sensor 4-3 and the second cut-off valve 4-4 are both connected with the controller.
The pressure sensor 4-3 sends a pressure signal in the alkali liquor conveying pipe 4-1 to the controller to obtain the pressure of the alkali liquor conveying pipe 4-1, the pressure of the alkali liquor conveying pipe 4-1 is compared with a pressure threshold value set in the controller, and when the pressure of the alkali liquor conveying pipe 4-1 is smaller than the pressure threshold value set in the controller, the controller sends a cut-off signal to the second cut-off valve 4-4 to close the second cut-off valve 4-4, so that gas poisoning caused by gas flow to the alkali liquor preparation mechanism 2 is avoided.
Wherein, the first cut-off valve 2-4 and the second cut-off valve 4-4 are electromagnetic valves.
The utility model also provides a blast furnace, which adopts the gas sulfide removal device, the concrete structure of the gas sulfide removal device refers to the above embodiments, and the gas sulfide removal device adopts all the technical schemes of all the embodiments, so that the gas sulfide removal device at least has all the beneficial effects brought by the technical schemes of the embodiments, and the detailed description is omitted.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (9)
1. A coal gas sulfide removal device is characterized by comprising: a gas pipeline, an alkali liquor preparation mechanism and an alkali liquor spray gun;
the alkali liquor spray gun is arranged in the gas pipeline;
the liquid inlet of the alkali liquor spray gun is communicated with the alkali liquor preparation mechanism.
2. The gas sulfide removal device according to claim 1, wherein the lye preparation mechanism comprises: the device comprises a box body, a water delivery pipe and an alkali powder delivery pipe;
the water delivery pipe is communicated with the water inlet of the box body;
the alkali powder conveying pipe is communicated with a feeding hole of the box body;
the liquid outlet of the box body is communicated with the liquid inlet of the alkali liquor spray gun.
3. The gas sulfide removal device according to claim 2, characterized in that:
the water delivery pipe is provided with a flowmeter.
4. The gas sulfide removal device according to claim 2, characterized in that:
the water conveying pipe is provided with a first cut-off valve.
5. The gas sulfide removal device according to claim 2, characterized in that:
a stirrer is arranged in the box body.
6. The gas sulfide removal device of claim 1, further comprising: an alkali liquor conveying mechanism;
the liquid inlet end of the alkali liquor conveying mechanism is communicated with the alkali liquor preparation mechanism, and the liquid outlet end of the alkali liquor conveying mechanism is communicated with the liquid inlet of the alkali liquor spray gun.
7. The gas desulfation device of claim 1, wherein the lye conveying mechanism comprises: an alkali liquor conveying pipe and a pump;
the pump is arranged in the alkali liquor preparation mechanism;
the liquid inlet end of the alkali liquor conveying pipe is communicated with the pump, and the liquid outlet end of the alkali liquor conveying pipe is communicated with the liquid inlet of the alkali liquor spray gun.
8. The gas sulfide removal device according to claim 7, wherein:
a pressure sensor and a second cut-off valve are arranged on the alkali liquor conveying pipe;
and the pressure sensor and the second cut-off valve are both connected with the controller.
9. A blast furnace comprising the gas sulfide removal device according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120826396.0U CN215365626U (en) | 2021-04-21 | 2021-04-21 | Coal gas sulfide removing device and blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120826396.0U CN215365626U (en) | 2021-04-21 | 2021-04-21 | Coal gas sulfide removing device and blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215365626U true CN215365626U (en) | 2021-12-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120826396.0U Active CN215365626U (en) | 2021-04-21 | 2021-04-21 | Coal gas sulfide removing device and blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215365626U (en) |
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2021
- 2021-04-21 CN CN202120826396.0U patent/CN215365626U/en active Active
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