CN214572078U - Blast furnace gas recovery device - Google Patents
Blast furnace gas recovery device Download PDFInfo
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- CN214572078U CN214572078U CN202120569746.XU CN202120569746U CN214572078U CN 214572078 U CN214572078 U CN 214572078U CN 202120569746 U CN202120569746 U CN 202120569746U CN 214572078 U CN214572078 U CN 214572078U
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Abstract
The utility model belongs to the technical field of blast furnace gas recovery, in particular to a blast furnace gas recovery device, which comprises a blast furnace, a material tank, a gravity dust removal dehydrator, a bag-type dust remover, a front-arranged ejector and a rear-arranged ejector, wherein an exhaust port of the material tank is connected with the air inlet end of the gravity dust removal dehydrator through a pressure-equalizing gas recovery pipeline, the exhaust end of the gravity dust removal dehydrator is connected with the air inlet end of the bag-type dust remover through a pipeline, the exhaust end of the bag-type dust remover is connected with an outer net low-pressure gas pipeline through a pipeline, the exhaust port of the blast furnace is connected with the air inlet end of the gravity dust removal dehydrator through a large-emission gas recovery pipeline, the front-arranged ejector is arranged on the connecting pipeline between the gravity dehydrator dust removal and the bag-type dust remover, the rear-arranged ejector is arranged on the connecting pipeline between the bag-type dust remover and the outer net low-pressure gas pipeline, a pressure-equalizing recovery valve bank is arranged on the pressure-equalizing gas recovery pipeline, and a large-diffusion recovery valve group is arranged on the large-diffusion gas recovery pipeline.
Description
Technical Field
The utility model belongs to the technical field of blast furnace gas retrieves, concretely relates to blast furnace gas recovery unit.
Background
In the blast furnace smelting process, a large amount of furnace gas is generated in a blast furnace system, and the furnace gas contains a certain amount of carbon monoxide gas (CO is more than 20%), so the blast furnace gas is called as blast furnace gas, contains a large amount of combustible components and is mixed with a large amount of dust, and for the blast furnace gas, the traditional treatment mode is usually direct air discharge, so that not only is energy wasted, but also great pollution is caused to the environment.
SUMMERY OF THE UTILITY MODEL
To solve the problems set forth in the background art described above. The utility model provides a blast furnace gas recovery unit is applicable to 1000 and gives other peaches to 2500m blast furnace, and one set of recovery unit of voltage-sharing gas recovery and the recovery of the big coal gas that diffuses of furnace top is retrieved, can guarantee that the voltage-sharing diffuses the coal gas and obtain effectively retrieving under the prerequisite that does not influence the normal production of blast furnace.
In order to achieve the above object, the utility model provides a following technical scheme: a blast furnace gas recovery device comprises a blast furnace, a charging bucket, a gravity dust removal dehydrator, a cloth bag dust remover, a front ejector and a rear ejector, the exhaust port of the charging bucket is connected with the air inlet end of the gravity dust-removing dehydrator through a pressure-equalizing gas recovery pipeline, the exhaust end of the gravity dust-removing dehydrator is connected with the air inlet end of the bag-type dust remover through a pipeline, the exhaust end of the bag-type dust remover is connected with the outer-net low-pressure gas pipeline through a pipeline, the exhaust port of the blast furnace is connected with the air inlet end of the gravity dust removal dehydrator through a large-diffusion coal gas recovery pipeline, the preposed ejector is arranged on a connecting pipeline between the gravity dust-removing dehydrator and the bag-type dust remover, the rear ejector is arranged on a connecting pipeline between the bag-type dust collector and the outer net low-pressure gas pipeline, the pressure equalizing gas recovery pipeline is provided with a pressure equalizing recovery valve bank, and the large-diffusing gas recovery pipeline is provided with a large-diffusing recovery valve bank.
Preferably, a gas heat exchange and dehumidification mechanism is further arranged on a connecting pipeline between the gravity dust-removal dehydrator and the bag-type dust remover.
Preferably, the gas heat exchange and dehumidification mechanism comprises a heat exchanger, an electric heating mechanism and a steam heat tracing mechanism.
Preferably, the large-emission gas recovery pipeline comprises four gas ascending pipes and a gas descending pipe, the bottom ends of the four gas ascending pipes are respectively connected with four exhaust ports of the blast furnace, the upper ends of the four gas ascending pipes are connected with the gas descending pipe, the other end of the gas descending pipe is connected with the gas inlet end of the gravity dust removal dehydrator, and the large-emission recovery valve bank is installed on the gas descending pipe.
Compared with the prior art, the beneficial effects of the utility model are that:
the gas recovery device in the utility model is suitable for a 1000-and 2500-m blast furnace, and the pressure-equalizing gas recovery and the recovery of the top large-spread gas share one recovery device, so that the pressure-equalizing spread gas can be effectively recovered on the premise of not influencing the normal production of the blast furnace; under the condition that the blast furnace stops blowing in abnormal conditions, the furnace top large-scale diffusion recovery system effectively recovers all the released coal gas, thereby not only recycling coal gas resources, but also avoiding environmental pollution, reducing equipment investment and being more economic and environment-friendly.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural view of the present invention;
in the figure: the system comprises a blast furnace 1, a charging bucket 2, a gravity dust removal dehydrator 3, a bag-type dust remover 4, a front ejector 5, a rear ejector 6, a pressure-equalizing recovery valve bank 7, a large-release recovery valve bank 8, a heat exchanger 9, an electric heating mechanism 10, a steam tracing mechanism 11, a gas ascending pipe 12, a gas descending pipe 13, a pressure-equalizing gas recovery pipeline 14 and an external network low-pressure gas pipeline 15.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Examples
Referring to fig. 1, the present embodiment provides the following technical solutions: a blast furnace gas recovery device comprises a blast furnace 1, a charging bucket 2, a gravity dust-removing dehydrator 3, a bag-type dust remover 4, a front-mounted ejector 5 and a rear-mounted ejector 6, wherein the charging bucket 2 is arranged above the blast furnace 1, an exhaust port of the charging bucket 2 is connected with an air inlet end of the gravity dust-removing dehydrator 3 through a pressure-equalizing gas recovery pipeline 14, an exhaust end of the gravity dust-removing dehydrator 3 is connected with an air inlet end of the bag-type dust remover 4 through a pipeline, an exhaust end of the bag-type dust remover 4 is connected with an outer-net low-pressure gas pipeline 15 through a pipeline, an exhaust port of the blast furnace 1 is connected with an air inlet end of the gravity dust-removing dehydrator 3 through a large-emission gas recovery pipeline, the front-mounted ejector 5 is arranged on a connecting pipeline between the gravity dust-removing dehydrator 3 and the bag-type dust remover 4, the rear-mounted ejector 6 is arranged on a connecting pipeline between the bag-type dust remover 4 and the outer-net low-pressure gas pipeline 15, the front-mounted ejector 5 and the rear-mounted ejector 6 are both connected with a high-pressure nitrogen pipeline, the pressure equalizing recovery valve group is used for increasing the circulation speed of gas in the pipeline, a pressure equalizing recovery valve group 7 is installed on a pressure equalizing gas recovery pipeline 14, and a large-diffusing recovery valve group 8 is installed on a large-diffusing gas recovery pipeline.
A gas heat exchange and dehumidification mechanism is also arranged on a connecting pipeline between the gravity dust-removal dehydrator 3 and the bag-type dust remover 4, and comprises a heat exchanger 9, an electric heating mechanism 10 and a steam heat tracing mechanism 11.
The large-diffusion gas recovery pipeline comprises four gas ascending pipes 12 and a gas descending pipe 13, the bottom ends of the four gas ascending pipes 12 are respectively connected with four exhaust ports of the blast furnace 1, the upper ends of the four gas ascending pipes 12 are respectively connected with the gas descending pipe 13, the other end of the gas descending pipe 13 is connected with the gas inlet end of the gravity dust removal dehydrator 3, and a large-diffusion recovery valve group 8 is arranged on the gas descending pipe 13.
In the normal production of blast furnace 1, open pressure-equalizing recovery valves 7, close big relief recovery valves 8, material jar 2 is reinforced in to blast furnace 1 at every turn, the coal gas in blast furnace 1 can enter into material jar 2, the coal gas in material jar 2 enters into to gravity dust removal dehydrator 3 through pressure-equalizing coal gas recovery pipeline 14 and removes dust and dewaters this moment, and carry out dehumidification processing once more through heat exchanger 9, electric heating mechanism 10 and steam heat tracing mechanism 11 again after, enter into to sack cleaner 4 and carry out dry process dust removal processing, enter into outer net low pressure coal gas pipeline 15 at last.
When the blast furnace 1 is out of production, the large-diffusing recovery valve group 8 is opened, the pressure-equalizing recovery valve group 7 is closed, the coal gas in the blast furnace 1 enters the gravity dust-removing dehydrator 3 through the four coal gas ascending pipes 12 and the coal gas descending pipe 13 to be subjected to dust-removing dehydration, and then enters the bag-type dust remover 4 to be subjected to dry dust-removing treatment after being subjected to secondary dehumidification treatment through the heat exchanger 9, the electric heating mechanism 10 and the steam heat tracing mechanism 11, and finally enters the outer-net low-pressure coal gas pipeline 15.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. A blast furnace gas recovery device is characterized in that: comprises a blast furnace (1), a charging bucket (2), a gravity dust-removing dehydrator (3), a bag-type dust remover (4), a front-arranged ejector (5) and a rear-arranged ejector (6), wherein an exhaust port of the charging bucket (2) is connected with an air inlet end of the gravity dust-removing dehydrator (3) through a pressure-equalizing gas recovery pipeline (14), an exhaust end of the gravity dust-removing dehydrator (3) is connected with an air inlet end of the bag-type dust remover (4) through a pipeline, an exhaust end of the bag-type dust remover (4) is connected with an outer net low-pressure gas pipeline (15) through a pipeline, an exhaust port of the blast furnace (1) is connected with an air inlet end of the gravity dust-removing dehydrator (3) through a large-diffusion gas recovery pipeline, the front-arranged ejector (5) is arranged on a connecting pipeline between the gravity dust-removing dehydrator (3) and the bag-type dust remover (4), the rear-arranged ejector (6) is arranged on a connecting pipeline between the bag-type dust remover (4) and the outer net low-pressure gas pipeline (15), a pressure equalizing recovery valve group (7) is arranged on the pressure equalizing gas recovery pipeline (14), and a large-diffusing recovery valve group (8) is arranged on the large-diffusing gas recovery pipeline.
2. The blast furnace gas recovery apparatus according to claim 1, wherein: a gas heat exchange and dehumidification mechanism is also arranged on the connecting pipeline between the gravity dust-removal dehydrator (3) and the bag-type dust remover (4).
3. The blast furnace gas recovery apparatus according to claim 2, wherein: the coal gas heat exchange and dehumidification mechanism comprises a heat exchanger (9), an electric heating mechanism (10) and a steam heat tracing mechanism (11).
4. The blast furnace gas recovery apparatus according to claim 1, wherein: the large-diffusion gas recovery pipeline comprises four gas ascending pipes (12) and a gas descending pipe (13), the bottom ends of the four gas ascending pipes (12) are respectively connected with four exhaust ports of the blast furnace (1), the upper ends of the four gas ascending pipes (12) are respectively connected with the gas descending pipe (13), the other end of the gas descending pipe (13) is connected with the gas inlet end of the gravity dust removal dehydrator (3), and a large-diffusion recovery valve group (8) is installed on the gas descending pipe (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120569746.XU CN214572078U (en) | 2021-03-20 | 2021-03-20 | Blast furnace gas recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120569746.XU CN214572078U (en) | 2021-03-20 | 2021-03-20 | Blast furnace gas recovery device |
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| Publication Number | Publication Date |
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| CN214572078U true CN214572078U (en) | 2021-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120569746.XU Active CN214572078U (en) | 2021-03-20 | 2021-03-20 | Blast furnace gas recovery device |
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| CN (1) | CN214572078U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114484859A (en) * | 2022-01-28 | 2022-05-13 | 新疆八一钢铁股份有限公司 | Electric heating device and heating system for metallurgical gas |
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2021
- 2021-03-20 CN CN202120569746.XU patent/CN214572078U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114484859A (en) * | 2022-01-28 | 2022-05-13 | 新疆八一钢铁股份有限公司 | Electric heating device and heating system for metallurgical gas |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220907 Address after: 455100 Anlin Road (Expressway intersection), Xujiagou Township, Anyang County, Anyang City, Henan Province Patentee after: Henan chaozuan Environmental Protection Engineering Technology Co.,Ltd. Address before: 457004 No. 5 outside Shengli West Road, Shengli Road office, Hualong District, Puyang City, Henan Province Patentee before: Liu Yanlin |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230925 Address after: No. 202, Unit 1, Building 6, Courtyard 5, Delong Street, Wenfeng District, Anyang City, Henan Province, 455000 Patentee after: Liu Xi Address before: 455100 Anlin Road (Expressway intersection), Xujiagou Township, Anyang County, Anyang City, Henan Province Patentee before: Henan chaozuan Environmental Protection Engineering Technology Co.,Ltd. |
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| TR01 | Transfer of patent right |