CN110665928A - Dust cleaning method for molten iron desulphurization pretreatment station - Google Patents
Dust cleaning method for molten iron desulphurization pretreatment station Download PDFInfo
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- CN110665928A CN110665928A CN201910970647.XA CN201910970647A CN110665928A CN 110665928 A CN110665928 A CN 110665928A CN 201910970647 A CN201910970647 A CN 201910970647A CN 110665928 A CN110665928 A CN 110665928A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/04—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area from a small area, e.g. a tool
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
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- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The invention discloses a dust cleaning method for a molten iron desulphurization pretreatment station, which comprises the following steps: when the desulfurization equipment begins to work, start first fan, second fan and third fan, under the effect of first fan, the dust that desulfurization equipment drifted around is collected the back through first dust cage, purifies in first air purifier is reachd through first dust absorption pipe, and the air after purifying discharges to the external environment of station room wall through first fan, and under the effect of second fan, the second fan is with the station room outer wall natural air intake in the second air purifier, after second air purifier purifies. According to the invention, the first fan, the second fan, the third fan, the first public pipeline, the first public regulating valve, the second public pipeline and the second public regulating valve are arranged, so that dust in the molten iron desulphurization pretreatment station is cleaned more thoroughly, and when the dust removing equipment needs to be overhauled, the whole dust removing system can also run normally, and the practicability is strong.
Description
Technical Field
The invention relates to the technical field of steel making, in particular to a dust cleaning treatment method for a molten iron desulphurization pretreatment station.
Background
With the rapid development of modern industrial production and scientific technology, the requirements on the quality of steel are increasing day by day, for example, the sulfur content of common steel is required to be less than 0.020% in order to avoid internal cracks of steel billets and obtain good surface quality; in order to make the structural steel have uniform mechanical properties, the sulfur content in the steel is required to be less than 0.010%; in order to make the steel for petroleum and natural gas conveying pipe, petroleum refining equipment, offshore oil production platform, low-temperature steel, thick ship plate steel, aviation steel and the like have hydrogen induced cracking resistance, more uniform mechanical property and higher impact toughness, the silicon steel has good electromagnetic property, the thin plate steel has excellent deep drawing property and the like, the sulfur content in the steel is required to be less than 0.005%, and the steel with low sulfur is required, the steel making process of the traditional blast furnace continuous steel casting iron making converter is difficult to produce, the steel can be produced only by adding a molten iron pre-desulfurization process before steel making and adding an external refining process after steel making, the molten iron pre-desulfurization is one of indispensable processes for optimizing the metallurgical production process, the coke ratio of the continuous steel casting iron making can be reduced, the productivity can be improved, the lime consumption and the slag amount of the steel making can be reduced, and the production cost can be reduced, and the pre-desulfurization has a spreading method, A large amount of dust is generated in a workshop in the molten iron pre-desulfurization pretreatment process by a ladle shaking method, a mechanical stirring method, a blowing method, a wire feeding method and the like, but the dust is not thoroughly cleaned by the conventional dust cleaning treatment method, and the whole dust removal system is easily broken down when equipment is overhauled and cleaned, so that the prior art needs to be improved to solve the problems.
Disclosure of Invention
The invention aims to provide a dust cleaning method for a molten iron desulphurization pretreatment station, which aims to solve the problems that the existing dust cleaning method in the background art is not thorough in dust cleaning and the whole dust removal system is easy to be broken down when equipment is overhauled and cleaned.
In order to achieve the purpose, the invention provides the following technical scheme: a dust cleaning method for a molten iron desulphurization pretreatment station, the method comprising the steps of:
s1: when the desulfurization equipment starts to work, the first fan, the second fan and the third fan are started, under the action of the first fan, the dust scattered around the desulfurization equipment is collected by the first dust collecting hood, the air reaches the first air purifier through the first dust absorption pipe for purification, the purified air is discharged to the external environment of the wall of the station house through the first fan, under the action of the second fan, the second fan sucks natural air outside the wall of the station house into the second air purifier, the natural air is purified by the second air purifier and then is conveyed by the blast pipe and then is discharged from the blast opening, fresh air is supplemented into the desulfurization pretreatment station, under the action of a third fan, dust-containing air in the desulfurization pretreatment station is collected by a second dust collecting hood, the air is purified in a third air purifier through a second dust absorption pipe, and the purified air is discharged to the external environment of the wall of the station house through a third fan;
s2: when a certain first air purifier needs to be cleaned and maintained internally, the first regulating valve in front of the first air purifier is closed at the moment, and the first public regulating valve is opened, so that two adjacent first dust absorption pipes are communicated, the dust-containing air in the line needing to be maintained and cleaned enters the adjacent first dust absorption pipes through the first public pipeline, is converged with the dust-containing air in the adjacent first dust absorption pipes, and the converged air is purified by the first air purifier and then is discharged;
s3: when a certain third air purifier needs to be cleaned and maintained, the second regulating valve in front of the third air purifier is closed at the moment, and the second public regulating valve is opened, so that two adjacent second dust suction pipes are communicated, the dust-containing air in the line needing to be maintained and cleaned enters the adjacent second dust suction pipes through the second public pipeline, the dust-containing air in the adjacent second dust suction pipes is converged, and the converged air is purified by the third air purifier and then is discharged.
Preferably, the first fan is fixed at the top of the first air purifier, an inlet of the first fan is fixedly connected with an outlet of the first air purifier, an inlet of the first air purifier is fixedly connected with one end of the first dust suction pipe, and the other end of the first dust suction pipe is fixedly connected with the first dust collection cover.
Preferably, the first dust hood, the first air purifier and the first fan are all provided with four, the four first dust hoods are uniformly arranged around the desulfurization equipment along the circumference, and the four first air purifiers and the four first dust hoods are arranged outside the wall of the station house in a one-to-one correspondence mode.
Preferably, the third fan is fixed at the top of the third air purifier, an inlet of the third fan is fixedly connected with an outlet of the third air purifier, an inlet of the third air purifier is fixedly connected with one end of the second dust collection pipe, and the other end of the second dust collection pipe is fixedly connected with the second dust collection cover.
Preferably, the number of the second dust collecting hood, the number of the third air purifier and the number of the third fan are two, and the two second dust collecting hood, the two third air purifier and the two third fan are respectively and symmetrically arranged along the central line of the desulfurization pretreatment station.
Preferably, the second fan is fixed at the top of the second air purifier, an inlet of the second fan is fixedly connected with an outlet of the second air purifier, an outlet of the second fan is fixedly connected with the two air supply pipes, and the two air supply pipes are symmetrically arranged on inner walls of two sides of the wall of the station room.
Preferably, the air supply openings are provided with a plurality of air supply openings, and the plurality of air supply openings are arranged on the air supply pipe at equal intervals.
Preferably, the first common regulating valve is arranged on a first common pipeline, and the first common pipeline is arranged between two adjacent first dust suction pipes.
Preferably, the second common adjusting valve is disposed on a second common duct disposed between the two second dust suction pipes.
Compared with the prior art, the invention has the beneficial effects that.
(1) The invention arranges the first fan, the second fan and the third fan to absorb air and remove dust twice and exchange air once, so that the air in the molten iron desulphurization pretreatment station is fresh, the dust can be thoroughly cleaned, the dust beside the desulfurization equipment in the desulfurization pretreatment station is sucked into a first air purifier by a first fan for purification, thereby primarily cleaning the dust in the desulfurization pretreatment station, the dust which is not sucked into the first dust collecting hood is diffused to all corners in the desulfurization pretreatment station, the dust which is not sucked into the first dust collecting hood is sucked into the third air purifier for purification through the third fan, thereby can thoroughly clean the dust in the desulfurization preliminary treatment station completely, the rethread second fan purifies outside fresh air and then supplyes in the desulfurization preliminary treatment station to realize the dynamic balance of the interior air of whole desulfurization preliminary treatment station.
(2) According to the invention, the first public pipeline, the first public regulating valve, the second public pipeline and the second public regulating valve are arranged, so that when a certain first air purifier and a certain third air purifier need to be cleaned and maintained internally, the influence on the whole dust removal system is small, the stability is better, the dust-containing air in the line needing to be maintained and cleaned enters the adjacent dust collection pipes through the public pipeline by opening the first public regulating valve and the second public regulating valve, the influence on dust removal in the desulfurization pretreatment station is avoided when the air purifiers need to be cleaned and maintained, the four first dust collection covers can still absorb dust beside desulfurization equipment in four directions, and the two second dust collection covers can still remove dust from the air in the desulfurization pretreatment station in two directions.
Drawings
FIG. 1 is a sectional top view of the present invention;
FIG. 2 is a front cross-sectional view of the present invention.
The reference numbers in the figures are: 1. a first air purifier; 2. a first fan; 3. a first dust suction pipe; 4. a first regulating valve; 5. a first dust collection cover; 6. a desulfurization unit; 7. a first common conduit; 8. a first common regulating valve; 9. a second air purifier; 10. a second fan; 11. an air supply pipe; 12. an air supply outlet; 13. a wall of a station house; 14. a third air purifier; 15. a third fan; 16. a second dust suction pipe; 17. a second regulating valve; 18. a second dust collection cover; 19. a second common conduit; 20. a second common regulator valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, an embodiment of the present invention is shown: a dust cleaning treatment method for a molten iron desulphurization pretreatment station comprises the following steps:
s1: when the desulfurization equipment 6 starts to work, the first fan 2, the second fan 10 and the third fan 15 are started, under the action of the first fan 2, dust which drifts around the desulfurization equipment 6 is collected by the first dust hood 5 and then reaches the first air purifier 1 through the first dust absorption pipe 3 for purification, the purified air is discharged to the external environment of the station room wall 13 through the first fan 2, under the action of the second fan 10, the natural air outside the station room wall 13 is sucked into the second air purifier 9 through the second fan 10, is purified by the second air purifier 9, is conveyed through the blast pipe 11 and then is discharged from the blast opening 12, fresh air is supplemented to the interior of the desulfurization pretreatment station, under the action of the third fan 15, the dust-containing air in the desulfurization pretreatment station is collected through the second dust hood 18 and then reaches the third air purifier 14 through the second dust absorption pipe 16 for purification, the purified air is discharged to the external environment of the station room wall 13 through the third fan 15, and the air in the molten iron desulphurization pretreatment station is refreshed through twice air suction and dust removal and once ventilation;
s2: when a certain first air purifier 1 needs internal cleaning and maintenance, the first regulating valve 4 in front of the first air purifier 1 is closed at the moment, and the first public regulating valve 8 is opened, so that two adjacent first dust suction pipes 3 are communicated, dust-containing air in the line needing maintenance and cleaning enters the adjacent first dust suction pipes 3 through the first public pipeline 7, and is converged with the dust-containing air in the adjacent first dust suction pipes 3, and the converged air is purified by the first air purifier 1 and then discharged, so that when a certain first air purifier 1 needs internal cleaning and maintenance, the four first dust collection covers 5 can still absorb dust beside the desulfurization equipment 6 in four directions, and the dust is not easy to escape;
s3: when a certain third air purifier 14 needs internal cleaning and maintenance, the second adjusting valve 17 in front of the third air purifier 14 is closed, and the second common adjusting valve 20 is opened, so that two adjacent second dust suction pipes 16 are communicated, the dust-containing air in the line needing maintenance and cleaning enters the adjacent second dust suction pipe 16 through the second common pipeline 19, and is merged with the dust-containing air in the adjacent second dust suction pipe 16, and the merged air is purified by the third air purifier 14 and then discharged, so when a certain third air purifier 14 needs internal cleaning and maintenance, the two second dust hoods 18 can still remove dust from the air in the desulfurization pretreatment station in two directions, and the dust-containing air in the corners in the desulfurization pretreatment station can be completely sucked into the second dust hoods 18.
Further, first fan 2 is fixed at the top of first air purifier 1, the import of first fan 2 and the export fixed connection of first air purifier 1, the import of first air purifier 1 and the one end fixed connection of first dust absorption pipe 3, the other end and the first dust cage 5 fixed connection of first dust absorption pipe 3.
Further, first dust cage 5, first air purifier 1 and first fan 2 all are provided with four, and four first dust cages 5 evenly set up around sweetener 6 along the circumference, and four first air purifier 1 set up side by side in the outside of station room wall 13 with four first dust cage 5 one-to-ones, through setting up four first dust cages 5, can all-roundly 360 degrees adsorb the raise dust near sweetener 6, and adsorption effect is better.
Further, a third fan 15 is fixed on the top of the third air cleaner 14, an inlet of the third fan 15 is fixedly connected with an outlet of the third air cleaner 14, an inlet of the third air cleaner 14 is fixedly connected with one end of a second dust suction pipe 16, and the other end of the second dust suction pipe 16 is fixedly connected with a second dust collection cover 18.
Further, the number of the second dust hood 18, the number of the third air purifier 14 and the number of the third fan 15 are two, the two second dust hoods 18, the number of the third air purifier 14 and the number of the third fan 15 are symmetrically arranged along the center line of the desulfurization pretreatment station respectively, and through the arrangement of the two second dust hoods 18, dust-containing air in the desulfurization pretreatment station can be thoroughly sucked into the air purifiers to be cleaned, and dust collection is free of dead angles.
Further, second fan 10 is fixed at the top of second air purifier 9, the import of second fan 10 and the export fixed connection of second air purifier 9, the export and the blast pipe 11 fixed connection of second fan 10, and blast pipe 11 is provided with two, and two blast pipes 11 symmetry set up on the both sides inner wall of standing room wall 13.
Further, supply-air outlet 12 is provided with a plurality of, and a plurality of supply-air outlet 12 equidistant setting is on blast pipe 11, and the setting of a plurality of supply-air outlet 12 makes fresh air can quick even diffusion to the station in.
Further, a first common regulation valve 8 is provided on the first common duct 7, and the first common duct 7 is provided between two adjacent first dust suction pipes 3.
Further, a second common adjusting valve 20 is arranged on the second common pipeline 19, the second common pipeline 19 is arranged between the two second dust suction pipes 16, the first common adjusting valve 8 and the second common adjusting valve 20 are both arranged to be electrically operated valves, and the first common adjusting valve 8 and the second common adjusting valve 20 are both led into the central control room to be controlled by the hand operator in a centralized mode.
The working principle is as follows: the invention sucks the dust beside the desulphurization device 6 in the desulphurization pretreatment station into the first air purifier 1 for purification through the first fan 2, thereby preliminarily cleaning the dust in the desulphurization pretreatment station, the dust which is not sucked into the first dust-collecting hood 5 is diffused to each corner in the desulphurization pretreatment station, the dust which is not sucked into the first dust-collecting hood 5 is sucked into the third air purifier 14 for purification through the third fan 15, thereby completely and thoroughly cleaning the dust in the desulphurization pretreatment station, the outside fresh air is purified by the second air purifier 9 and then supplemented into the desulphurization pretreatment station through the second fan 10, thereby realizing the dynamic balance of the air in the whole desulphurization pretreatment station, when a certain first air purifier 1 and a certain third air purifier 14 need to be internally cleaned and maintained, the first public regulating valve 8 and the second public regulating valve 20 are opened, make the dirty air of the clean line of needs maintenance get into in the adjacent dust absorption pipe through the common line, thereby avoid when air purifier needs cleanness, when the maintenance, the dust removal in the desulfurization preliminary treatment station is influenced, four first dust cages 5 still can absorb the other dust of sweetener 6 in four directions, two second dust cages 18 still can remove dust the inside air in desulfurization preliminary treatment station in two directions, whole molten iron desulfurization preliminary treatment station dust cleaning effect is showing.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A dust cleaning treatment method for a molten iron desulphurization pretreatment station is characterized by comprising the following steps: the method comprises the following steps:
s1: when the desulfurization equipment (6) starts to work, a first fan (2), a second fan (10) and a third fan (15) are started, under the action of the first fan (2), dust scattered around the desulfurization equipment (6) is collected through a first dust collection cover (5), and then reaches a first air purifier (1) through a first dust absorption pipe (3) for purification, the purified air is discharged to the external environment of a station room wall (13) through the first fan (2), under the action of the second fan (10), the second fan (10) sucks natural air outside the station room wall (13) into a second air purifier (9), and after being purified through the second air purifier (9), the air is conveyed through an air supply pipe (11) and then discharged from an air supply outlet (12) to supplement fresh air inside the desulfurization pretreatment station, under the action of the third fan (15), the dust-containing air inside the desulfurization pretreatment station is collected through a second dust collection cover (18), the air reaches a third air purifier (14) through a second dust absorption pipe (16) for purification, and the purified air is discharged to the external environment of the wall (13) of the station house through a third fan (15);
s2: when a certain first air purifier (1) needs to be cleaned and maintained internally, the first adjusting valve (4) in front of the first air purifier (1) is closed at the moment, the first public adjusting valve (8) is opened, two adjacent first dust absorption pipes (3) are communicated, dust-containing air in the line needing to be maintained and cleaned enters the adjacent first dust absorption pipes (3) through the first public pipeline (7) and is converged with the dust-containing air in the adjacent first dust absorption pipes (3), and the converged air is purified by the first air purifier (1) and then is discharged;
s3: when a certain third air purifier (14) needs to be cleaned and maintained internally, the second adjusting valve (17) in front of the third air purifier (14) is closed, the second common adjusting valve (20) is opened, two adjacent second dust suction pipes (16) are communicated, dust-containing air in the line needing to be maintained and cleaned enters the adjacent second dust suction pipes (16) through the second common pipeline (19) and is merged with the dust-containing air in the adjacent second dust suction pipes (16), and the merged air is purified by the third air purifier (14) and then is discharged.
2. The dust cleaning method for the molten iron desulphurization pretreatment station according to claim 1, characterized in that: the air purifier is characterized in that the first fan (2) is fixed to the top of the first air purifier (1), the inlet of the first fan (2) is fixedly connected with the outlet of the first air purifier (1), the inlet of the first air purifier (1) is fixedly connected with one end of the first dust suction pipe (3), and the other end of the first dust suction pipe (3) is fixedly connected with the first dust collection cover (5).
3. The dust cleaning method for the molten iron desulphurization pretreatment station according to claim 1, characterized in that: the four dust-collecting hoods (5), the four air purifiers (1) and the four fans (2) are all arranged, the four dust-collecting hoods (5) are evenly arranged around the desulfurization equipment (6) along the circumference, and the four air purifiers (1) and the four dust-collecting hoods (5) are arranged outside the station house wall (13) in a one-to-one correspondence mode.
4. The dust cleaning method for the molten iron desulphurization pretreatment station according to claim 1, characterized in that: the third fan (15) is fixed at the top of the third air purifier (14), the inlet of the third fan (15) is fixedly connected with the outlet of the third air purifier (14), the inlet of the third air purifier (14) is fixedly connected with one end of the second dust suction pipe (16), and the other end of the second dust suction pipe (16) is fixedly connected with the second dust collection cover (18).
5. The dust cleaning method for the molten iron desulphurization pretreatment station according to claim 1, characterized in that: the number of the second dust collection hoods (18), the number of the third air purifiers (14) and the number of the third fans (15) are two, and the two second dust collection hoods (18), the two third air purifiers (14) and the two third fans (15) are symmetrically arranged along the center line of the desulfurization pretreatment station respectively.
6. The dust cleaning method for the molten iron desulphurization pretreatment station according to claim 1, characterized in that: the second fan (10) is fixed at the top of the second air purifier (9), the inlet of the second fan (10) is fixedly connected with the outlet of the second air purifier (9), the outlet of the second fan (10) is fixedly connected with the air supply pipe (11), the air supply pipe (11) is provided with two air supply pipes (11), and the two air supply pipes (11) are symmetrically arranged on the inner walls of the two sides of the station room wall (13).
7. The dust cleaning method for the molten iron desulphurization pretreatment station according to claim 1, characterized in that: the air supply openings (12) are provided with a plurality of air supply openings (12) which are arranged on the air supply pipe (11) at equal intervals.
8. The dust cleaning method for the molten iron desulphurization pretreatment station according to claim 1, characterized in that: the first common adjusting valve (8) is arranged on a first common pipeline (7), and the first common pipeline (7) is arranged between two adjacent first dust suction pipes (3).
9. The dust cleaning method for the molten iron desulphurization pretreatment station according to claim 1, characterized in that: the second common control valve (20) is arranged on a second common line (19), the second common line (19) being arranged between the two second suction pipes (16).
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| CN201910970647.XA CN110665928A (en) | 2019-10-14 | 2019-10-14 | Dust cleaning method for molten iron desulphurization pretreatment station |
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| CN201910970647.XA CN110665928A (en) | 2019-10-14 | 2019-10-14 | Dust cleaning method for molten iron desulphurization pretreatment station |
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Application publication date: 20200110 |
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| RJ01 | Rejection of invention patent application after publication |