CN217438223U - Purification treatment recovery and diffusion system for diffused gas in maintenance of blast furnace top - Google Patents
Purification treatment recovery and diffusion system for diffused gas in maintenance of blast furnace top Download PDFInfo
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- CN217438223U CN217438223U CN202220608273.4U CN202220608273U CN217438223U CN 217438223 U CN217438223 U CN 217438223U CN 202220608273 U CN202220608273 U CN 202220608273U CN 217438223 U CN217438223 U CN 217438223U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The utility model relates to a purification treatment recovery and diffusion system for diffused gas during maintenance of a blast furnace top, which comprises a purification treatment branch and a diffusion branch, so as to purify, recover or diffuse the gas; the purification treatment branch road includes gravity dust collector and the sack cleaner of being connected on one side of this gravity dust collector, gravity dust collector one end is connected with blast furnace roof diffusion mouth, the sack cleaner is connected with purification coal gas outlet pipeline and purifies the coal gas main line, it is connected with low pressure coal gas pipe network to purify the coal gas main line, diffuse the branch road including connecting the dust remover diffusion valves on the sack cleaner, be connected with the dust remover diffusion pipeline on the dust remover diffusion valves, the dust remover diffusion pipeline is connected to the platform that diffuses at the furnace roof. The utility model discloses the blast furnace roof overhauls diffuses coal gas purification treatment and retrieves and diffuse system cost is with low costs, and purification back coal gas dust content is lower, satisfies the environmental protection demand, has higher economic value and better application prospect.
Description
Technical Field
The utility model relates to a blast furnace gas purification treatment device, in particular to a system for purifying, recovering and diffusing diffused gas during maintenance and diffusion of a blast furnace top.
Background
Blast furnace iron making is a main method of modern iron making due to the characteristics of simple process, large yield, low energy consumption, high labor productivity and the like. Before the blast furnace equipment is overhauled, the coal gas in the furnace needs to be diffused, and a large amount of coal gas is diffused to the atmosphere through a furnace top diffusing system and is not recycled. In addition, when the blast furnace is opened, the coal gas with unqualified furnace top needs to be diffused, a large amount of dust is generated and discharged, and the requirement of environmental protection is not met.
At present, there exist some apparatuses and methods for purifying the dust-containing gas of blast furnaces, such as: patent publication No. 101429579B discloses a method and an apparatus for cleaning blast furnace gas, which can prevent dust removed from a dust collecting electrode from being scattered again when a dry type electric dust collector is cleaned. In this patent, large particle dust is removed from blast furnace gas containing dust discharged from a blast furnace by a dust remover; then removing small-particle dust from the coal gas by using a dry type electric dust collector, wherein the dry type electric dust collector comprises a plurality of dry type electric dust collectors which are arranged in the subsequent part of the dust collector side by side relative to the flow of the coal gas; the dust accumulated on the dust collecting electrode of the dry type electric dust collector is removed and cleaned, wherein the following steps are required to be carried out in sequence for removing the dust accumulated on the dust collecting electrode: the gas exhaust of the gas from which the small particle dust is removed is cut off by a gas cutting off device; stopping applying the direct current; removing the dust accumulated on the dust collecting electrode by a rapping device; allowing the floating dust to settle; applying a direct current; so that the gas begins to exhaust. However, the process has the defects of excessive newly-built equipment, high construction and operation cost and incapability of purifying coal gas and recycling. Not meeting the large trend of energy conservation and emission reduction.
Therefore, the purification treatment recovery and purification treatment diffusion of the diffused gas for the maintenance of the top of the blast furnace are very necessary, and in view of the above, the technology needs to be improved.
SUMMERY OF THE UTILITY MODEL
To the defects and deficiencies in the prior art, the application provides a purification treatment recovery and diffusion system for diffused gas in the maintenance of the top of a blast furnace, so as to meet the requirement of environmental protection.
In order to achieve the above purpose, the technical scheme of the utility model is that: a purification treatment recovery and diffusion system for diffused gas during maintenance of a blast furnace top comprises a purification treatment branch and a diffusion branch, and is used for purifying, recovering or diffusing the gas; the purification treatment branch comprises a gravity dust collector and a bag-type dust collector connected with one side of the gravity dust collector, one end of the gravity dust collector is connected with a blow-off port at the top of the blast furnace, the bag-type dust collector is connected with a purified gas outlet pipeline and a purified gas main pipeline, and the purified gas main pipeline is connected with a low-pressure gas pipe network; the diffusing branch comprises a dust remover diffusing valve group connected to the bag-type dust remover, a dust remover diffusing pipeline is connected to the dust remover diffusing valve group, and the dust remover diffusing pipeline is connected to the furnace top diffusing platform.
As a further improvement, one side of the gravity dust collector is connected with the bag-type dust collector through a second diffused gas recovery pipeline, and one end of the gravity dust collector is connected with the diffusion port of the blast furnace top through a first diffused gas recovery pipeline.
As a further improvement, the bag-type dust collector is provided with two sets, and the two sets of bag-type dust collectors are connected with the gravity dust collector in parallel.
As a further improvement, a first diffused gas recovery pipeline between the gravity dust collector and the diffusing port at the top of the blast furnace is connected with a gravity dust collector inlet valve group.
As a further improvement, each set of bag-type dust remover is connected with an outlet pipeline, the outlet pipeline is connected with a bag-type dust remover outlet valve group and a dust remover diffusing valve group connected with the bag-type dust remover outlet valve group in parallel, and the bag-type dust remover outlet valve group is connected to the low-pressure gas pipe network through a purified gas outlet pipeline and a purified gas main pipeline.
As a further improvement, one end of a second diffused gas recovery pipeline between the gravity dust collector and the bag-type dust collector is connected with a gravity dust collector outlet valve group, the other end of the second diffused gas recovery pipeline is connected with a bag-type dust collector inlet valve group, the gravity dust collector outlet valve group is connected to one end, close to the gravity dust collector, of the second diffused gas recovery pipeline, and the bag-type dust collector inlet valve group is connected to one end, close to the bag-type dust collector, of the second diffused gas recovery pipeline.
As a further improvement, a purified gas main pipeline valve group is arranged on the purified gas main pipeline and comprises a pressure pipe, a butterfly valve and a blind plate valve, wherein the butterfly valve and the blind plate valve are connected to the pressure pipe, and the pressure pipe is connected with the purified gas main pipeline and communicated with a low-pressure gas pipe network.
As a further improvement, gravity dust collector inlet valve group includes first intake pipe, connects butterfly valve, blind plate valve and the metal compensator in first intake pipe, first intake-tube connection on first diffused gas recovery pipeline and communicate with gravity dust collector, gravity dust collector export valve group includes the outlet duct, connects metal compensator, blind plate valve, the butterfly valve on the outlet duct, and gravity dust collector is connected to outlet duct one end, and the other end is connected on second diffused gas recovery pipeline.
As a further improvement, the bag-type dust collector inlet valve group comprises a second air inlet pipe, and a butterfly valve, a blind plate valve and a metal compensator which are connected to the second air inlet pipe, one end of the second air inlet pipe is connected to the second diffused gas recovery pipeline, the other end of the second air inlet pipe is connected to the bag-type dust collector, the bag-type dust collector outlet valve group comprises an exhaust pipe, the metal compensator, the blind plate valve and the butterfly valve which are connected to the exhaust pipe, and the exhaust pipe is connected to the outlet pipeline.
As a further improvement, the dust remover bleeding valve group comprises a pipe body and two bleeding ball valves which are sequentially connected in series on the pipe body, one end of the pipe body is connected with the outlet pipeline, and the other end of the pipe body is connected with the dust remover bleeding pipeline.
The utility model discloses the beneficial effect who gains:
the utility model provides a blast furnace roof overhauls diffuses coal gas purification treatment and retrieves and diffuse system cost is with low costs, and the coal gas dust content after the purification is lower, satisfies the environmental protection demand, has higher economic value and better application prospect.
Drawings
FIG. 1 is a flow chart of the overall structure of the system for purifying, recovering and diffusing the diffused gas in the maintenance of the top of the blast furnace;
FIG. 2 is a structural diagram of a purified gas main pipeline valve set in a maintenance, diffusing, gas purification, recovery and diffusing system of the blast furnace top of the utility model;
FIG. 3 is a schematic structural view of an inlet valve group of a gravity dust collector in the maintenance, diffusing, gas purification, recovery and diffusing system of the blast furnace top of the utility model;
FIG. 4 is a schematic structural view of an inlet valve set of a bag-type dust collector in a system for purifying, treating, recovering and diffusing the diffused gas in the maintenance of the top of the blast furnace of the utility model;
FIG. 5 is a structural diagram of an outlet valve group of a gravity dust collector in a purification treatment recovery and diffusion system for the maintenance and diffusion of the gas at the top of the blast furnace of the utility model;
FIG. 6 is a structural diagram of an outlet valve set of a bag-type dust collector in a system for purifying, recovering and diffusing the gas discharged from the maintenance of the top of the blast furnace;
FIG. 7 is a structural diagram of a diffusing valve set of a dust remover in the purifying treatment recovery and diffusing system of the diffused gas for the maintenance of the blast furnace top of the utility model.
Detailed Description
The following describes embodiments of the present invention in detail with reference to the accompanying drawings and examples.
Referring to fig. 1 to 7, a system for purifying, recovering and diffusing the diffused gas during the maintenance of the top of the blast furnace includes a purifying branch and a diffusing branch, wherein the purifying branch is used for purifying, recovering and utilizing the gas of the blast furnace, or the diffusing branch is used for diffusing the gas of the blast furnace.
Specifically, the purification treatment branch comprises a gravity dust collector 3 and a bag-type dust collector 6 connected with one side of the gravity dust collector 3 through a second diffused gas recovery pipeline 17, one end of the gravity dust collector 3 is connected with a diffusion port 100 of the blast furnace top through a first diffused gas recovery pipeline 1, the bag-type dust collector 6 is connected with a purified gas outlet pipeline 8 and a purified gas main pipeline 9, and the purified gas main pipeline 9 is connected with a low-pressure gas pipe network 200. The diffusing branch comprises a dust remover diffusing valve group 11 connected to the bag-type dust remover 6, the dust remover diffusing valve group 11 is connected with a dust remover diffusing pipeline 12, and the dust remover diffusing pipeline 12 is connected to the furnace top diffusing platform 300.
A gravity dust collector inlet valve group 2 is connected to a first diffused gas recovery pipeline 1 between a gravity dust collector 3 and a blast furnace top diffusion port 100, one end of a second diffused gas recovery pipeline 17 between the gravity dust collector 3 and a bag-type dust collector 6 is connected with a gravity dust collector outlet valve group 4, and the other end of the second diffused gas recovery pipeline 17 is connected with a bag-type dust collector inlet valve group 5. In this embodiment, the outlet valve set 4 of the gravity dust collector is connected to one end of the second diffused gas recycling pipeline 17 close to the gravity dust collector 3, and the inlet valve set 5 of the bag-type dust collector is connected to one end of the second diffused gas recycling pipeline 17 close to the bag-type dust collector 6.
Two sets of bag-type dust collectors 6 are arranged, the two sets of bag-type dust collectors 6 are connected with the gravity dust collector 3 in parallel, the two sets of bag-type dust collectors 6 can work simultaneously or independently, for example, when one set of bag-type dust collector 6 is overhauled, only the other set of bag-type dust collector 6 is used for working, continuous and uninterrupted work of the system is realized, and the production requirements can be further met.
Each set of bag-type dust collector 6 is connected with an outlet pipeline 61, the outlet pipeline 61 is connected with a bag-type dust collector outlet valve group 7 and a dust collector bleeding valve group 11 which is connected with the bag-type dust collector outlet valve group 7 in parallel, and the bag-type dust collector outlet valve group 7 is connected to a low-pressure gas pipe network 200 through a purified gas outlet pipeline 8 and a purified gas main pipeline 9.
The dust remover bleeding valve group 11 is connected with a dust remover bleeding pipeline 12, the dust remover bleeding pipeline 12 is connected to the furnace top bleeding platform 300, coal gas to be diffused is led to the furnace top bleeding platform 300 through the dust remover bleeding pipeline 12, the outlet of the dust remover bleeding pipeline 12 is higher than the furnace top bleeding platform 300 so as to meet the requirement of furnace top bleeding, and in the embodiment, the outlet of the dust remover bleeding pipeline 12 is higher than the furnace top bleeding platform 300 by five meters.
Referring to fig. 2, a purified gas main pipeline valve group 10 is disposed on the purified gas main pipeline 9, the purified gas main pipeline valve group 10 includes a pressure pipe 101, and a butterfly valve 15 and a blind plate valve 14 connected to the pressure pipe 101, and the pressure pipe 101 is connected to the purified gas main pipeline 9 and communicated with a low-pressure gas pipe network 200.
Referring to fig. 3 to 4, the inlet valve set 2 of the gravity dust collector includes a first inlet pipe 21, a butterfly valve 15 connected to the first inlet pipe 21, a blind plate valve 14, and a metal compensator 13, wherein the first inlet pipe 21 is connected to the first released gas recycling pipeline 1 and is communicated with the gravity dust collector 3. The structure of sack cleaner inlet valve group 5 is close with 2 structures in gravity dust collector inlet valve group, and the difference lies in that the erection joint structure is different, specifically is: the device comprises a second air inlet pipe 51, a butterfly valve 15, a blind plate valve 14 and a metal compensator 13 which are connected to the second air inlet pipe 51, wherein one end of the second air inlet pipe 51 is connected to a second diffused gas recovery pipeline 17, and the other end of the second air inlet pipe is connected with a bag-type dust collector 6. The high pressure side is arranged in to butterfly valve 15 among 2 gravity dust collector inlet valves and the sack cleaner inlet valves 5, and the low pressure side is arranged in to blind plate valve 14, when closing the inlet valves, closes butterfly valve 15 among the inlet valves earlier, and the blind plate valve 14 is closed to the back, can realize the reliable of coal gas like this and cut off, when opening the inlet valves, opens blind plate valve 14 earlier, opens butterfly valve 15 again, protection blind plate valve 14 that like this can be better promotes inlet valves life-span, guarantees the stable continuous operation of recovery system.
Referring to fig. 5 to 6, the outlet valve set 4 of the gravity dust collector has a structure opposite to that of the inlet valve set 2 of the gravity dust collector, and includes an air outlet pipe 41, a metal compensator 13 connected to the air outlet pipe 41, a blind plate valve 14, and a butterfly valve 15, wherein one end of the air outlet pipe 41 is connected to the gravity dust collector 3, and the other end is connected to the second diffused gas recycling pipeline 17. The structure of sack cleaner outlet valve group 7 is close with 4 structures of gravity dust collector outlet valve group, and the difference lies in that the erection joint structure is different, specifically is: comprises an exhaust pipe 71, a metal compensator 13 connected on the exhaust pipe 71, a blind plate valve 14 and a butterfly valve 15, wherein the exhaust pipe 71 is connected on an outlet pipeline 61.
Referring to fig. 7, the dust remover blow-off valve set 11 includes a tube 111 and two blow-off ball valves 16 connected in series to the tube 111 in sequence, one end of the tube 111 is connected to the outlet pipe 61, the other end of the tube 111 is connected to the dust remover blow-off pipe 12, the sealing performance can be ensured by the structure of the double blow-off ball valves 16, and the blow-off ball valves 16 are pneumatic ball valves and can be controlled remotely.
Referring to fig. 1, when the furnace top maintenance and diffused gas purification treatment recovery operation is performed, the gravity dust collector 3 and the bag-type dust collector 6 are switched to the diffused gas purification treatment recovery branch pipeline, the original inlet and outlet valves are closed, the gravity dust collector inlet valve bank 2, the gravity dust collector outlet valve bank 4, the bag-type dust collector inlet valve bank 5 and the bag-type dust collector outlet valve bank 7 are opened, and the bag-type dust collector diffusion valve bank 11 is closed. Because the pressure of the upstream furnace top gas is higher than the pressure of the downstream low-pressure gas pipe network 200, the gas diffused from the furnace top does not need to be pressurized and accelerated under the action of the pressure, the gas automatically enters the gravity dust collector 3 and the bag-type dust collector 6 along the diffusion port 100 of the blast furnace top for purification treatment, the gas passes through the gravity dust collector 3 to settle and separate the gas containing dust particles with the particle size larger than 40 mu m, and the gas is further filtered by the bag-type dust collector 6 to filter the gas containing fine dust with the particle size larger than 0.1 mu m and smaller than 40 mu m, so that the gas is purified. The gas after dust removal and purification treatment enters a bag-type dust remover outlet valve group 7, a purified gas outlet pipeline 8, a purified gas main pipeline 9 and a purified gas main pipeline valve group 10, and finally enters a low-pressure gas pipe network 200 to realize the recovery of the overhaul diffused gas.
When the pressure of the furnace top is balanced with the pressure of the low-pressure gas pipe network, only a small amount of gas remains in the furnace top. At this time, the bag-type dust collector outlet valve group 7 and the purified gas main pipeline valve group 10 are closed, gas supply to the low-pressure gas pipe network 200 is stopped, the bag-type dust collector bleeding valve group 11 is opened, and after residual gas in the furnace top and the pipeline is purified by the gravity dust collector 3 and the bag-type dust collector 6, the residual gas is guided to the furnace top bleeding platform 300 through the bag-type dust collector bleeding valve group 11 and the bag-type dust collector bleeding pipeline 12 to be diffused. Meanwhile, unqualified gas generated during the blow-in of the blast furnace can also be purified by the gravity dust collector 3 and the bag-type dust collector 6 through the process and then is led to the furnace top diffusion platform 300 for diffusion through the dust collector diffusion valve group 11 and the dust collector diffusion pipeline 12.
In addition, according to actual conditions and requirements, a gas detection point can be arranged in the system and used for controlling the state of the system detection equipment, so that the gas flow is regulated and controlled through the control valve group, and the purification effect is ensured.
The system for purifying, recovering and diffusing the diffused gas during the maintenance of the blast furnace top fully utilizes the existing gas purifying equipment and utilizes the pressure difference between the furnace top and the low-pressure gas pipe network 200 to realize the operation with low cost and low energy consumption. Because the parallel design of the double-bag dust collectors is adopted, the system has good reliability and good purification effect. The system has the advantages of small change to the blast furnace and the corollary equipment thereof, few newly added equipment, low manufacturing cost of the system, and lower dust content of the purified gas, thereby having higher economic value and use value.
To sum up, the utility model discloses the blast furnace roof overhauls diffuses coal gas purification treatment and retrieves and diffuses the system and has realized overhauing the purpose that diffuses coal gas purification treatment and retrieve and purification treatment diffuses to the blast furnace roof, has realized the recycle of the energy, and the cost is with low costs simultaneously, and the coal gas dust content is lower after the purification, satisfies the environmental protection demand, has higher economic value and better application prospect.
The above-mentioned embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.
Claims (10)
1. The utility model provides a blast furnace roof overhauls diffused gas purification treatment and retrieves and diffuse system which characterized in that: comprises a purification treatment branch and a diffusion branch, so as to purify, recover or diffuse the coal gas; the purification treatment branch comprises a gravity dust collector (3) and a bag-type dust collector (6) connected with one side of the gravity dust collector (3), one end of the gravity dust collector (3) is connected with a blast furnace top diffusion port (100), the bag-type dust collector (6) is connected with a purified gas outlet pipeline (8) and a purified gas main pipeline (9), and the purified gas main pipeline (9) is connected to a low-pressure gas pipe network (200); the diffusing branch comprises a dust remover diffusing valve group (11) connected to the bag-type dust remover (6), a dust remover diffusing pipeline (12) is connected to the dust remover diffusing valve group (11), and the dust remover diffusing pipeline (12) is connected to the furnace top diffusing platform (300).
2. The blast furnace top maintenance diffused gas purification treatment recovery and diffusion system according to claim 1, characterized in that: one side of the gravity dust collector (3) is connected with the bag-type dust collector (6) through a second diffused gas recovery pipeline (17), and one end of the gravity dust collector (3) is connected with the diffusion opening (100) of the blast furnace top through a first diffused gas recovery pipeline (1).
3. The blast furnace top maintenance diffused gas purification treatment recovery and diffusion system according to claim 2, characterized in that: the bag-type dust collector is characterized in that the bag-type dust collector (6) is provided with two sets, and the bag-type dust collector (6) and the gravity dust collector (3) are connected in parallel.
4. The blast furnace top maintenance diffused gas purification treatment recovery and diffusion system according to claim 2, characterized in that: and an inlet valve group (2) of the gravity dust collector is connected to a first diffused gas recovery pipeline (1) between the gravity dust collector (3) and the diffusing port (100) at the top of the blast furnace.
5. The blast furnace top maintenance diffused gas purification treatment recovery and diffusion system according to claim 3, characterized in that: each set of bag-type dust collector is connected with an outlet pipeline (61) on the bag-type dust collector (6), the outlet pipeline (61) is connected with a bag-type dust collector outlet valve group (7) and a dust collector diffusing valve group (11) connected with the bag-type dust collector outlet valve group (7) in parallel, and the bag-type dust collector outlet valve group (7) is connected to the low-pressure gas pipe network (200) through a purified gas outlet pipeline (8) and a purified gas main pipeline (9).
6. The blast furnace top maintenance diffused gas purification treatment recovery and diffusion system according to claim 4, characterized in that: second between gravity dust collector (3) and sack cleaner (6) diffuses coal gas recovery pipeline (17) one end and is connected with gravity dust collector export valves (4), and second diffuses coal gas recovery pipeline (17) other end and is connected with sack cleaner import valves (5), and gravity dust collector export valves (4) are connected in second and are diffused the one end that coal gas recovery pipeline (17) are close to gravity dust collector (3), and sack cleaner import valves (5) are connected in the one end that second diffuses coal gas recovery pipeline (17) and are close to sack cleaner (6).
7. The blast furnace top maintenance diffused gas purification treatment recovery and diffusion system according to claim 1, characterized in that: the gas purification system is characterized in that a gas purification main pipeline valve group (10) is arranged on the gas purification main pipeline (9), the gas purification main pipeline valve group (10) comprises a pressure pipe (101), a butterfly valve (15) and a blind plate valve (14) which are connected to the pressure pipe (101), and the pressure pipe (101) is connected with the gas purification main pipeline (9) and communicated with a low-pressure gas pipe network (200).
8. The blast furnace top maintenance diffused gas purification treatment recovery and diffusion system according to claim 6, characterized in that: gravity dust remover import valves (2) include first intake pipe (21), connect butterfly valve (15), blind plate valve (14) and metal compensator (13) on first intake pipe (21), first intake pipe (21) are connected on first diffusion coal gas recovery pipeline (1) and communicate with gravity dust remover (3), gravity dust remover export valves (4) include outlet duct (41), connect metal compensator (13), blind plate valve (14), butterfly valve (15) on outlet duct (41), and gravity dust remover (3), the other end is connected on second diffusion coal gas recovery pipeline (17) are connected to outlet duct (41) one end.
9. The blast furnace top maintenance diffused gas purification treatment recovery and diffusion system according to claim 6, characterized in that: sack cleaner inlet valve group (5) include second intake pipe (51) and butterfly valve (15), blind plate valve (14), metal compensator (13) of connection on second intake pipe (51), and this second intake pipe (51) one end is connected on second diffuses coal gas recovery pipeline (17), and the other end is connected with sack cleaner (6), sack cleaner outlet valve group (7) include blast pipe (71), connect metal compensator (13), blind plate valve (14), butterfly valve (15) on blast pipe (71), blast pipe (71) are connected on outlet pipe (61).
10. The blast furnace top maintenance diffused gas purification treatment recovery and diffusion system according to claim 1, characterized in that: the dust remover bleeding valve group (11) comprises a pipe body (111) and two bleeding ball valves (16) which are sequentially connected in series on the pipe body (111), one end of the pipe body (111) is connected with the outlet pipeline (61), and the other end of the pipe body (111) is connected with the dust remover bleeding pipeline (12).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220608273.4U CN217438223U (en) | 2022-03-18 | 2022-03-18 | Purification treatment recovery and diffusion system for diffused gas in maintenance of blast furnace top |
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| CN202220608273.4U CN217438223U (en) | 2022-03-18 | 2022-03-18 | Purification treatment recovery and diffusion system for diffused gas in maintenance of blast furnace top |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114592103A (en) * | 2022-03-18 | 2022-06-07 | 北京瑞达宏信科技有限公司 | Purification treatment recovery and diffusion system for diffused gas in maintenance of blast furnace top |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114592103A (en) * | 2022-03-18 | 2022-06-07 | 北京瑞达宏信科技有限公司 | Purification treatment recovery and diffusion system for diffused gas in maintenance of blast furnace top |
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