CN211689134U - Novel blast furnace top pressure-equalizing gas and blast furnace damping-down waste gas integrated treatment system - Google Patents
Novel blast furnace top pressure-equalizing gas and blast furnace damping-down waste gas integrated treatment system Download PDFInfo
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- CN211689134U CN211689134U CN201922198222.XU CN201922198222U CN211689134U CN 211689134 U CN211689134 U CN 211689134U CN 201922198222 U CN201922198222 U CN 201922198222U CN 211689134 U CN211689134 U CN 211689134U
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- dust remover
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Abstract
The utility model discloses a novel blast furnace roof pressure-sharing coal gas and blast furnace damping down waste gas integration treatment system, including material jar, metal film composite dust remover and gravity dust remover, the material jar passes through material jar pressure-sharing coal gas recovery pipeline and is connected with metal film composite dust remover, and the material jar still is connected with gravity dust remover, metal film composite dust remover through gas conveying pipeline, and the export of metal film composite dust remover is passed through gas conveying pipeline and is connected with the gas house steward. The utility model purifies and recovers the pressure-equalizing coal gas of the blast furnace top charging bucket. Saves energy waste, reduces air pollution and eliminates original diffused noise.
Description
Technical Field
The utility model relates to an environmental protection field especially relates to a novel blast furnace top voltage-sharing coal gas and blast furnace damping down waste gas integration treatment system.
Background
In recent years, with the growing environmental protection and climate problems, people have attracted high attention, and low-carbon, clean and efficient enterprises are bound to be built. In the blast furnace smelting production process, before the blast furnace charging bucket is charged, the high-pressure gas in the charging bucket needs to be decompressed and diffused, the traditional diffusing mode is to open a diffusing valve, and the dust-containing high-pressure gas in the charging bucket is directly discharged to the air through a diffusing pipe. The emission process generates noise, discharges a large amount of blast furnace gas and dust, causes multiple pollution to the environment, and wastes a large amount of gas energy.
According to the latest standard and the environmental protection requirement, the top of the blast furnace is provided with a top pressure discharge coal gas recovery device. Therefore, in order to recover energy and improve the environment, simultaneously eliminate the noise of the furnace top and improve the maintenance condition of the furnace top equipment, the furnace top pressure equalizing and bleeding system is required to be provided with a pressure equalizing gas recovery system.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects, the utility model aims to provide a novel blast furnace top pressure-sharing gas and blast furnace damping down waste gas integrated treatment system.
In order to achieve the above object, the utility model discloses a following technical scheme realizes: the novel integrated treatment system for blast furnace top pressure-equalizing gas and blast furnace damping-down waste gas comprises a charging bucket, a metal film composite dust remover and a gravity dust remover, wherein the charging bucket is connected with the metal film composite dust remover through a charging bucket pressure-equalizing gas recovery pipeline, the charging bucket is also sequentially connected with the gravity dust remover and the metal film composite dust remover through a gas conveying pipeline, and the outlet of the metal film composite dust remover is connected with a gas main pipe through the gas conveying pipeline; the gas recovery device is characterized in that a recovery valve, a manual blind plate valve, a pneumatic butterfly valve and an electric blind plate valve are arranged on a charging bucket pressure-equalizing gas recovery pipeline between the charging bucket and the metal film composite dust remover, and a pneumatic butterfly valve and an electric blind plate valve are arranged on a gas conveying pipeline between the gravity dust remover and the metal film composite dust remover.
Further, the outlet of the gravity dust collector is connected with a dry bag-type dust collector through a gas conveying pipeline.
Further, a pneumatic butterfly valve and an electric blind plate valve are arranged on a gas conveying pipeline between the gravity dust collector and the dry-method bag-type dust collector.
Furthermore, a gas conveying pipeline between the metal film composite dust remover and the gas main pipe is provided with a pneumatic butterfly valve, an electric blind plate valve, a check valve, a gas component analyzer and a dust concentration detector.
Furthermore, a temperature detector is arranged on a gas conveying pipeline between the gravity dust collector and the metal film composite dust collector, and a temperature detector is arranged on a charging bucket pressure-equalizing gas recovery pipeline between the charging bucket and the metal film composite dust collector.
Further, the top of the charging bucket is also provided with a blast furnace top gas bleeding valve.
Furthermore, the bottom of the metal film composite dust remover is also provided with a dust remover ash discharging device.
The utility model has the advantages that: the pressure-equalizing coal gas of the blast furnace top charging bucket is purified and recovered. Saves energy waste, reduces air pollution and eliminates original diffused noise. The utility model discloses degree of automation is high, can realize full-automatic unmanned control through PLC. Compared with other blast furnace top material gas filling recovery processes, the method can reduce the occupied area and the project investment.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Wherein: 1. the device comprises a charging bucket, 2, a metal film composite dust remover, 3, a gravity dust remover, 4, a charging bucket pressure equalizing gas recovery pipeline, 5, a gas conveying pipeline, 6, a gas header pipe, 7, a recovery valve, 8, a manual blind plate valve, 9, a pneumatic butterfly valve, 10, an electric blind plate valve, 11, a check valve, 12, a gas component analyzer, 13, a dust concentration detector, 14, a temperature detector, 15, a sealing valve, 16, a pressure equalizing valve, 17, a blast furnace body, 18, a blow-off valve, 19 and a dust remover ash unloading device.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in figure 1, the novel blast furnace top pressure-equalizing gas and blast furnace damping-down waste gas integrated treatment system comprises a charging bucket 1, a metal film composite dust remover 2 and a gravity dust remover 3. The top of the charging bucket 1 is provided with a blast furnace top gas bleeding valve 18. The bottom of the metal film composite dust remover 2 is also provided with a dust remover ash discharging device 19.
The charging bucket 1 is connected with the metal film composite dust remover 2 through a charging bucket pressure-equalizing gas recovery pipeline 4. A recovery valve 7, a manual blind plate valve 8, a pneumatic butterfly valve 9, an electric blind plate valve 10 and a temperature detector 14 are arranged on the charging bucket pressure equalizing gas recovery pipeline 4 between the charging bucket 1 and the metal film composite dust collector 2. The outlet of the metal film composite dust remover 2 is connected with a gas main pipe 6 through a gas conveying pipeline 5. A gas conveying pipeline 5 between the metal film composite dust remover 2 and the gas main pipe 6 is provided with a pneumatic butterfly valve 9, an electric blind plate valve 10, a check valve 11, a gas component analyzer 12 and a dust concentration detector 13.
The charging bucket 1 is also connected with a gravity dust collector 3 and a metal film composite dust collector 2 in sequence through a gas conveying pipeline 5. A pneumatic butterfly valve 9, an electric blind plate valve 10 and a temperature detector 14 are arranged on the gas conveying pipeline 5 between the gravity dust collector 3 and the metal film composite dust collector 2. The outlet of the gravity dust collector 3 is also connected with a dry cloth bag dust collector through a gas conveying pipeline 5. A pneumatic butterfly valve 9 and an electric blind plate valve 10 are arranged on the gas conveying pipeline 5 between the gravity dust collector 3 and the dry-method bag-type dust collector.
The utility model discloses a blast furnace roof voltage-sharing gas recovery theory of operation and working process:
the working principle of natural recovery of blast furnace top pressure-equalizing gas is as follows: the energy of high-pressure gas in the charging bucket 1 is naturally recovered, and the high-pressure gas enters the metal film composite dust collector 2 through the charging bucket pressure-equalizing gas recovery pipeline 4 and is filtered and then is merged into the low-pressure clean gas header pipe 6.
The natural recovery working process of the blast furnace top pressure-equalizing coal gas comprises the following steps:
(1) after the charging of the blast furnace charging bucket 1 is finished, the sealing valve 15 on the charging bucket 1 is closed, and the equalizing valve 16 is opened to pressurize the charging bucket 1 by using clean gas.
(2) When the pressure in the charging bucket 1 is equal to the pressure in the blast furnace body, the pressurization is completed, the lower sealing valve 17 of the charging bucket is opened, the furnace burden falls into the blast furnace body 17 from the charging bucket 1, and the lower sealing valve 15 of the charging bucket 1 is closed after the discharge of the furnace burden is completed.
(3) And starting a recovery system, opening a recovery valve 7, enabling the high-pressure dust-containing gas in the charging bucket 1 to enter a metal film composite dust collector 2 through a charging bucket pressure-equalizing gas recovery pipeline 4, and enabling the filtered clean gas to enter a low-pressure clean gas main pipe 6 through a clean gas pipeline for gas recovery. In order to prevent the gas in the low-pressure clean gas main pipe 6 from flowing back to the interior of the metal film composite dust remover 2, a check valve 11 is arranged at the outlet of the metal film composite dust remover 2.
(4) After the gas is naturally recovered for several seconds, when the pressure of the charging bucket pressure-equalizing gas recovery pipeline 4 is equal to or slightly higher than the pressure of the low-pressure clean gas main pipe 6, the recovery valve 7 is closed, and the pressure-equalizing gas of the charging bucket 1 is recovered at one time.
(5) The recovery process is carried out repeatedly, and the coal gas of the blast furnace charging bucket is recovered each time.
(6) And a dust concentration detector 13 is arranged on the recovery pipeline and used for detecting whether the dust concentration of the recovered coal gas entering the low-pressure coal gas pipe network is qualified or not.
(7) The pneumatic butterfly valve 9 and the electric blind plate valve 10 are opened when the system operates normally, and are closed when other valves and equipment are overhauled, so that the effect of cutting off gas is achieved.
The utility model purifies and fully recovers 100 percent of pressure-equalizing coal gas of a charging bucket at the top of the blast furnace. Saves energy waste, reduces air pollution and eliminates original diffused noise. The utility model discloses degree of automation is high, can realize full-automatic unmanned control through PLC. Compared with other blast furnace top material gas filling recovery processes, the method can reduce the occupied area and the project investment.
Claims (7)
1. Novel blast furnace top pressure-sharing coal gas and blast furnace damping down waste gas integration treatment system, its characterized in that: the device comprises a charging bucket, a metal film composite dust remover and a gravity dust remover, wherein the charging bucket is connected with the metal film composite dust remover through a charging bucket pressure equalizing gas recovery pipeline, the charging bucket is also sequentially connected with the gravity dust remover and the metal film composite dust remover through a gas conveying pipeline, and an outlet of the metal film composite dust remover is connected with a gas main pipe through the gas conveying pipeline; the gas recovery device is characterized in that a recovery valve, a manual blind plate valve, a pneumatic butterfly valve and an electric blind plate valve are arranged on a charging bucket pressure-equalizing gas recovery pipeline between the charging bucket and the metal film composite dust remover, and a pneumatic butterfly valve and an electric blind plate valve are arranged on a gas conveying pipeline between the gravity dust remover and the metal film composite dust remover.
2. The novel blast furnace top pressure equalizing gas and blast furnace damping down waste gas integrated treatment system according to claim 1, characterized in that: the outlet of the gravity dust collector is also connected with a dry-method bag-type dust collector through a gas conveying pipeline.
3. The novel blast furnace top pressure equalizing gas and blast furnace damping down waste gas integrated treatment system according to claim 2, characterized in that: and a pneumatic butterfly valve and an electric blind plate valve are arranged on a gas conveying pipeline between the gravity dust collector and the dry-method bag-type dust collector.
4. The novel blast furnace top pressure equalizing gas and blast furnace damping down waste gas integrated treatment system according to claim 1, characterized in that: and a gas conveying pipeline between the metal film composite dust remover and the gas main pipe is provided with a pneumatic butterfly valve, an electric blind plate valve, a check valve, a gas composition analyzer and a dust concentration detector.
5. The novel blast furnace top pressure equalizing gas and blast furnace damping down waste gas integrated treatment system according to claim 1, characterized in that: the temperature detector is arranged on a gas conveying pipeline between the gravity dust collector and the metal film composite dust collector, and the temperature detector is arranged on a charging bucket pressure-equalizing gas recovery pipeline between the charging bucket and the metal film composite dust collector.
6. The novel blast furnace top pressure equalizing gas and blast furnace damping down waste gas integrated treatment system according to claim 1, characterized in that: the top of the charging bucket is also provided with a blast furnace top gas bleeding valve.
7. The novel blast furnace top pressure equalizing gas and blast furnace damping down waste gas integrated treatment system according to claim 1, characterized in that: and the bottom of the metal film composite dust remover is also provided with a dust remover ash discharging device.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922198222.XU CN211689134U (en) | 2019-12-10 | 2019-12-10 | Novel blast furnace top pressure-equalizing gas and blast furnace damping-down waste gas integrated treatment system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922198222.XU CN211689134U (en) | 2019-12-10 | 2019-12-10 | Novel blast furnace top pressure-equalizing gas and blast furnace damping-down waste gas integrated treatment system |
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| CN211689134U true CN211689134U (en) | 2020-10-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115109883A (en) * | 2022-06-23 | 2022-09-27 | 北京中冶蓝天科技有限公司 | Blast furnace blowing-down gas analyzer and blast furnace blowing-down gas recovery method |
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2019
- 2019-12-10 CN CN201922198222.XU patent/CN211689134U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115109883A (en) * | 2022-06-23 | 2022-09-27 | 北京中冶蓝天科技有限公司 | Blast furnace blowing-down gas analyzer and blast furnace blowing-down gas recovery method |
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