CN112642227A - High-temperature tail gas filter for vanadium titano-magnetite pre-reduction rotary kiln - Google Patents
High-temperature tail gas filter for vanadium titano-magnetite pre-reduction rotary kiln Download PDFInfo
- Publication number
- CN112642227A CN112642227A CN202011387701.7A CN202011387701A CN112642227A CN 112642227 A CN112642227 A CN 112642227A CN 202011387701 A CN202011387701 A CN 202011387701A CN 112642227 A CN112642227 A CN 112642227A
- Authority
- CN
- China
- Prior art keywords
- temperature
- metal fiber
- rotary kiln
- chamber
- filter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
- B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
- B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
- B01D46/2411—Filter cartridges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/008—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases cleaning gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
- F27D2017/006—Systems for reclaiming waste heat using a boiler
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The invention relates to the technical field of filters, in particular to a high-temperature tail gas filter for a vanadium titano-magnetite pre-reduction rotary kiln.A filter unit comprises an air inlet chamber, a filter chamber and a purifying chamber, wherein the air inlet chamber is communicated with the rotary kiln, the purifying chamber is communicated with a boiler structure, and the filter chamber filters high-temperature gas flowing through; the bottom of the high-temperature metal fiber filter bag in the filter chamber is fixed through the lower pattern plate, the top of the high-temperature metal fiber filter bag is fixed through the upper pattern plate in a plugging way, and gas passing through the high-temperature metal fiber filter bag flows into the purification chamber from the upper pattern plate. According to the invention, the high-temperature tail gas from the rotary kiln is directly filtered and then sent into the waste heat utilization boiler for heat exchange, so that the utilization efficiency and the economic benefit of energy are effectively improved, the damage caused at high temperature is avoided through the arrangement of the high-temperature metal fiber filter bag, the effective implementation of direct filtration of high-temperature gas is ensured, the rigidity of the filter structure is improved due to the parallel working mode of a plurality of cylinders, and the problem of strength reduction of materials due to heating is solved.
Description
Technical Field
The invention relates to the technical field of filters, in particular to a high-temperature tail gas filter for a vanadium titano-magnetite pre-reduction rotary kiln.
Background
The vanadium titano-magnetite pre-reduction belongs to the raw material preparation technology of high titanium slag smelting in submerged arc furnace, the powdery mineral raw material and the bituminous coal powder are uniformly mixed and then carry out reduction reaction with iron in the vanadium titano-magnetite at the temperature of 1100 ℃, so that Fe3O4 is reduced into Fe, crystal water in the mineral is also burnt at high temperature, simultaneously, the coking property of bituminous coal is utilized to sinter the mineral into blocks, the lower submerged arc furnace can be used for smelting and feeding materials into the furnace, thereby not only the furnace condition is more stable when the submerged arc furnace is smelted, but also a lot of smelting electricity consumption can be reduced.
At present, the tail gas of the rotary kiln used for the process exceeds 500 ℃, and in the process of filtering by using a cloth bag, the highest instant value of the tolerable temperature of the cloth bag is only 280 ℃, so that a huge surface air cooler or mechanical air cooler is required to be added at the front end to meet the requirement of a filter. During the above heat exchange process, the temperature is reduced and at the same time the heat energy is lost in large quantities, resulting in direct economic losses.
In view of the above problems, the present designer is based on the practical experience and professional knowledge that are abundant for many years in engineering application of such products, and is engaged with the application of theory to actively make research and innovation, so as to create a high temperature tail gas filter for a vanadium titano-magnetite pre-reduction rotary kiln, which is more practical.
Disclosure of Invention
The invention provides a high-temperature tail gas filter for a vanadium titano-magnetite pre-reduction rotary kiln, which effectively solves the problems in the background technology by directly filtering the high-temperature tail gas of the rotary kiln and then entering a boiler for heat exchange after filtering.
In order to achieve the purpose, the invention adopts the technical scheme that:
a high-temperature tail gas filter for a vanadium titano-magnetite pre-reduction rotary kiln comprises at least two filter units working in parallel;
the filtering unit sequentially comprises an air inlet chamber, a filtering chamber and a purifying chamber from bottom to top, the air inlet chamber is communicated with the vanadium titano-magnetite pre-reduction rotary kiln, the purifying chamber is communicated with a boiler structure, and the filtering chamber filters high-temperature gas flowing through;
the filtering chamber comprises an upper pattern plate, a lower pattern plate and a plurality of high-temperature metal fiber filtering bags, the bottoms of the high-temperature metal fiber filtering bags are fixed through the lower pattern plate and are communicated with the air inlet chamber, the tops of the high-temperature metal fiber filtering bags are sealed and fixed through the upper pattern plate, and gas passing through the high-temperature metal fiber filtering bags flows into the purifying chamber from through holes in the upper pattern plate.
Further, the filtering part of the high-temperature metal fiber filter bag is an FeCrAl metal fiber felt.
Furthermore, each filtering unit is communicated with the vanadium titano-magnetite pre-reduction rotary kiln through the same air inlet pipe; the air inlet pipe comprises a plurality of first cylindrical sections and a contraction section which is arranged between the two first cylindrical sections and has a contraction trend along the air inlet direction, and the filtering unit is connected with the contraction section.
Furthermore, each filtering unit is communicated with the boiler structure through the same air outlet pipe; the air outlet pipe comprises a plurality of second cylindrical sections and an expansion section which is arranged between the two second cylindrical sections and has an expansion trend along the air outlet direction, and the filtering unit is connected with the expansion section.
Furthermore, the high-temperature metal fiber filter bag comprises a top flange structure and a bottom flange structure, the top flange structure is located in the purification chamber and attached to the top of the upper pattern plate, and the bottom flange structure is located in the filter chamber and attached to the top of the lower pattern plate.
Furthermore, a plurality of air passing holes are uniformly distributed on the lower pattern plate, the air passing holes are positioned outside the hole positions communicated with the high-temperature metal fiber filter bag, and a high-temperature metal fiber net is attached to the bottom of the lower pattern plate.
Further, the filtering part of the high-temperature metal fiber net is an FeCrAl metal fiber felt.
Furthermore, an upper layer of fixing structure and a lower layer of fixing structure are arranged in the cylinder body of the filtering unit, each layer of fixing structure comprises at least four plate bodies which are uniformly distributed along the axis of the cylinder body, and the edge of the lower pattern plate is clamped between the two layers of fixing structures.
Further, the barrel with plate body among the fixed knot constructs corresponds is provided with and link up the cell body, it has U type clamp splice to run through in the cell body to link up, U type clamp splice is located one side in the barrel is to two-layer two corresponding plate body carries out the centre gripping among the fixed knot constructs, U type clamp splice is located one side outside the barrel is free vertical motion under guide structure's direction, guide structure is right link up the cell body and seal up.
Further, the guide structure comprises an annular structure, an upper cover and a lower cover which are arranged around the cylinder body;
the annular structure is attached to the outer wall of the cylinder, a guide groove for guiding the U-shaped clamping block is formed in the inner wall of the annular structure, and the upper cover and the lower cover are respectively arranged at the top and the bottom of the annular structure and used for plugging the top and the bottom of the guide groove;
the cooling medium circulates in the annular structure, and an annular sealing structure which is attached to the outer wall of the cylinder body is arranged on the inner wall of an annular region which is jointly surrounded by the upper cover and the lower cover.
Through the technical scheme, the invention has the beneficial effects that:
according to the invention, the high-temperature tail gas from the rotary kiln is directly filtered and then sent into the waste heat utilization boiler for heat exchange, so that the utilization efficiency of energy is effectively improved, the economic benefit is improved, the damage caused at high temperature is avoided through the arrangement of the high-temperature metal fiber filter bag, the effective implementation of direct filtration of high-temperature gas is ensured, the rigidity of the filter structure is improved due to the parallel working mode of a plurality of cylinders, and the problem of strength reduction of materials due to heating is solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of the distribution of a filter unit;
FIG. 2 is a schematic view showing the internal structure of the filter unit;
FIG. 3 is a schematic structural view of an intake pipe;
FIG. 4 is a schematic structural view of an outlet pipe;
FIG. 5 is an enlarged view of a portion of FIG. 2 at A;
FIG. 6 is an enlarged view of a portion of FIG. 2 at B;
FIG. 7 is a partial schematic view of the filter unit at the position of the lower deck after the air holes are opened;
FIG. 8 is a schematic view of the relative positions of the fixing structure and the lower faceplate;
FIG. 9 is a partial schematic view of the filter unit at the location of the lower deck secured by the securing structure;
FIG. 10 is an enlarged view of a portion of FIG. 9 at C;
FIG. 11 is a schematic view of the relative positions of the U-shaped clamping blocks and the fixing structure;
FIG. 12 is a partial schematic view of the filter unit at the location of the lower deck after the guide structure is provided;
FIG. 13 is a schematic diagram showing the relative positions of the ring structure and the U-shaped clamping blocks;
description of the drawings:
1. a filtration unit; 11. an air intake chamber; 12. a filtering chamber; 12a, mounting a pattern plate; 12b, a lower pattern plate; 12c, a high-temperature metal fiber filter bag; 12d, air passing holes; 13. a clean room; 2. an air inlet pipe; 21. a first cylindrical section; 22. a contraction section; 3. an air outlet pipe; 31. a second cylindrical section; 32. an expansion section; 4. a barrel; 5. A fixed structure; 51. a plate body; 6. a U-shaped clamping block; 7. a guide structure; 71. a cyclic structure.
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.
In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
As shown in fig. 1 and 2, a high temperature exhaust gas filter for a vanadium titano-magnetite pre-reduction rotary kiln comprises at least two filter units 1 working in parallel; the filtering unit 1 sequentially comprises an air inlet chamber 11, a filtering chamber 12 and a purifying chamber 13 from bottom to top, the air inlet chamber 11 is communicated with the vanadium titano-magnetite pre-reduction rotary kiln, the purifying chamber 13 is communicated with a boiler structure, and the filtering chamber 12 filters high-temperature gas flowing through; the filter chamber 12 comprises an upper pattern plate 12a, a lower pattern plate 12b and a plurality of high-temperature metal fiber filter bags 12c, the bottoms of the high-temperature metal fiber filter bags 12c are fixed through the lower pattern plate 12b and are communicated with the air inlet chamber 11, the tops of the high-temperature metal fiber filter bags 12c are sealed and fixed through the upper pattern plate 12a, and gas passing through the high-temperature metal fiber filter bags 12c flows into the purifying chamber 13 from through holes in the upper pattern plate 12 a.
According to the invention, the high-temperature tail gas from the rotary kiln is directly filtered and then sent into the waste heat utilization boiler for heat exchange, so that the utilization efficiency of energy is effectively improved, the economic benefit is improved, the damage caused at high temperature is avoided through the arrangement of the high-temperature metal fiber filter bag 12c, the effective implementation of the direct filtration of the high-temperature gas is ensured, the rigidity of the filter structure is improved due to the parallel working mode of the plurality of cylinders 4, and the problem of strength reduction of the material due to heating is solved.
As a preference of the above embodiment, the filtering part of the high temperature metal fiber filter bag 12c is FeCrAl metal fiber felt. The use of the material can increase the working temperature to 800 ℃, the metal fiber felt is formed by laying fiber yarns together in a three-dimensional labyrinth way and compacting and sintering, and has a plurality of junction points, so that the metal fiber felt has high blocking capability for solid pollutants, and the number of the compacting layers in the use process can be selected according to the actual situation.
As shown in fig. 3, each filter unit 1 is communicated with the vanadium titano-magnetite pre-reduction rotary kiln through the same air inlet pipe 2; the air inlet pipe 2 comprises a plurality of first cylindrical sections 21 and a contraction section 22 which is arranged between the two first cylindrical sections 21 and has a contraction trend along the air inlet direction, and the filter unit 1 is connected with the contraction section 22.
In this preferred scheme, through same intake pipe 2 connection rotary kiln and each filter unit 1 for the air current that gets into filter unit 1 is more stable, and wherein, the contraction section 22 that the interval set up plays the effect of air pressure increase, and suitable pressure boost makes gas have better directionality when passing through high temperature metal fiber filter bag 12c, thereby carries out effectual separation with solid pollutant, and the first cylinder section 21 that the interval set up plays the effect of stabilizing the air current.
As shown in fig. 4, each filter unit 1 is communicated with the boiler structure through the same outlet pipe 3; the outlet pipe 3 comprises a plurality of second cylindrical sections 31 and an expansion section 32 which is arranged between the two second cylindrical sections 31 and has an expansion trend along the outlet direction, and the filtering unit 1 is connected with the expansion section 32.
In this preferred scheme, connect boiler structure and each filter unit 1 through same outlet duct 3 for the air current that gets into the boiler structure is more stable, and contrary to the above-mentioned embodiment, the expansion section 32 that the interval set up plays the effect that reduces gas pressure, thereby avoids the impact to boiler inner structure, and the second cylinder section 31 that the interval set up then plays the effect of stabilizing the air current equally. In the process of actual production, the air inlet pipe 2 and the air outlet pipe 3 can be used universally and only the using direction is turned.
As shown in fig. 5 and 6, the high temperature metal fiber filter bag 12c includes a top flange structure and a bottom flange structure, the top flange structure is located in the clean room 13 and is attached to the top of the upper pattern plate 12a, and the bottom flange structure is located in the filter room 12 and is attached to the top of the lower pattern plate 12 b. Through the mode, the flange structures are all placed on one side of the lower temperature, so that the probability of deformation at high temperature is reduced.
In the implementation process, the connection position of the lower pattern plate 12b and the cylinder 4 of the filtering unit 1 is a weak point of the structure, on one hand, in the conventional structure, the lower pattern plate 12b and the cylinder 4 are fixed in a welding manner, the welding seams at two sides are respectively located in the air inlet chamber 11 and the filtering chamber 12 with temperature difference, on the other hand, the lower pattern plate 12b is connected with a plurality of high temperature metal fiber filtering bags 12c, the filtering bags will slightly vibrate during the use process, on the other hand, the pressure increase condition is easy to occur in the air inlet chamber 11, so that the difference generated between the two sides of the lower pattern plate 12b is increased, the fixing failure of the lower pattern plate 12b is easily caused by the three reasons, in order to solve the above technical problem, as shown in fig. 7, a plurality of through holes 12d are uniformly distributed on the lower pattern plate 12b, the through holes 12d are located outside the hole position of the through high temperature metal fiber, and the bottom of the lower pattern plate 12b is provided with a high-temperature metal fiber net in a fitting manner.
In the preferred scheme, the lower pattern plate 12b is provided with the air holes 12d, so that the lower pattern plate 12b obtains a space for expansion with heat and contraction with cold on one hand, the deformation degree of the edge welding seam position is reduced, and on the other hand, a part of air can enter the filtering chamber 12 through the air holes 12d after being filtered by the high-temperature metal fiber net, so that the air directly reaches the purifying chamber 13, the stress of the lower pattern plate 12b is more uniform, the local stress of the lower pattern plate 12b is reduced, and the structure and the installation stability of the lower pattern plate 12b are effectively improved through the measures.
As in the previous examples, the filter portion of the high temperature metal fiber web was a FeCrAl metal fiber felt.
Preferably, the filtering unit 1 has an upper fixing structure 5 and a lower fixing structure 5 disposed in the cylinder 4, each fixing structure 5 includes at least four plate bodies 51 uniformly distributed along the axis of the cylinder 4, and the edge of the lower flower plate 12b is sandwiched between the two fixing structures 5.
As shown in fig. 8-10, the mode that originally fixes lower card 12b through welding has been changed in this preferred scheme, but indirectly fix lower card 12b edge through upper and lower two-layer fixed knot structure 5, effectively avoided lower card 12b in the whole inflation process of being heated, the too big problem of edge deformation, wherein the extension area of plate body 51 structure is less, therefore the deformation volume is also little, and can only laminate the setting with lower card 12b, also can be through connection structure swing joint in certain extent, the problem of lower card 12b edge fixation inefficacy has been reduced, wherein, the diameter difference of card 12b and barrel 4 inner wall edge is confirmed according to actual size under normal atmospheric temperature.
As in the above embodiment, when a high temperature metal fiber net is further provided, the high temperature metal fiber net edge can be similarly sandwiched between the two layers of fixing structures 5, wherein the area of the plate body 51 can be appropriately increased in order to secure the edge fixing effect, but an expansion space needs to be reserved between the two adjacent plate bodies 51.
Preferably, as for the above embodiment, a U-shaped clamping block 6 penetrates through the through groove body, one side of the U-shaped clamping block 6 located in the cylinder 4 clamps the two corresponding plate bodies 51 of the two-layer fixing structure 5, one side of the U-shaped clamping block 6 located outside the cylinder 4 freely moves vertically under the guidance of the guide structure 7, and the guide structure 7 seals the through groove body.
In this preferred scheme, need to guarantee that the plate body 51 obtains the fixed of relative position with lower card 12b between, thereby avoid the drunkenness, through the setting of U type clamp splice 6, avoided carrying out welded operation at barrel 4 inner wall, make lower card 12b obtain the space of free activity in certain extent simultaneously, thereby can carry out adaptive removal to the atmospheric pressure fluctuation in the air inlet chamber 11, the effectual emergence probability that reduces the welding and became invalid, and adapt to the atmospheric pressure fluctuation in the wider range, lower card 12 b's deformation volume further reduces. Under normal conditions, the U-shaped clamping block 6 can be freely placed at the bottommost part of the through groove body by means of gravity, when the gas pressure in the air inlet chamber 11 is increased, the U-shaped clamping block moves upwards properly, the lower pattern plate 12b hardly rotates under the limitation of the high-temperature metal fiber filter bags 12c, and in the moving process of the lower pattern plate 12b, the high-temperature metal fiber filter bags 12c can completely adapt to the change of the bottom position and cannot cause any influence on the filtering process.
Wherein, the guiding structure 7 comprises a ring-shaped structure 71, an upper cover and a lower cover which are arranged around the cylinder 4; the annular structure 71 is attached to the outer wall of the barrel 4, a guide groove for guiding the U-shaped clamping block 6 is formed in the inner wall of the annular structure, and the upper cover and the lower cover are respectively arranged at the top and the bottom of the annular structure 71 to block the top and the bottom of the guide groove; the cooling medium circulates inside the annular structure 71, and an annular sealing structure attached to the outer wall of the cylinder 4 is arranged on the inner wall of an annular region which is surrounded by the upper cover and the lower cover.
Because the operational environment temperature is higher, consequently, can adopt flexible graphite sealing washer as cyclic annular seal structure, but in this embodiment, in order to protect barrel 4 setting up the position that link up the cell body, consequently, the mode of local cooling has been adopted, through ring structure 71 when leading U type clamp splice 6, still can with take place the heat exchange between the barrel 4, thereby make the temperature reduction of barrel 4 local position, wherein, because heat exchange area is less, consequently can not lead to the fact the influence to the availability factor of energy, simultaneously through ring structure 71's setting, also support and strengthen the part of barrel 4, thereby effectual structural stability and the availability factor of filter under the high temperature of having promoted.
In order to reduce the installation difficulty, the annular structure 71 can be arranged in a split manner and then fixed through the hoop structure, and the cooling medium can be selected adaptively.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The high-temperature tail gas filter for the vanadium titano-magnetite pre-reduction rotary kiln is characterized by comprising at least two filter units (1) working in parallel;
the filtering unit (1) sequentially comprises an air inlet chamber (11), a filtering chamber (12) and a purifying chamber (13) from bottom to top, the air inlet chamber (11) is communicated with the vanadium titano-magnetite pre-reduction rotary kiln, the purifying chamber (13) is communicated with a boiler structure, and the filtering chamber (12) filters high-temperature gas flowing through;
the filtering chamber (12) comprises an upper pattern plate (12 a), a lower pattern plate (12 b) and a plurality of high-temperature metal fiber filtering bags (12 c), the bottoms of the high-temperature metal fiber filtering bags (12 c) are fixed through the lower pattern plate (12 b) and are communicated with the air inlet chamber (11), the tops of the high-temperature metal fiber filtering bags (12 c) are fixedly plugged through the upper pattern plate (12 a), and gas passing through the high-temperature metal fiber filtering bags (12 c) flows into the purifying chamber (13) from through holes in the upper pattern plate (12 a).
2. The high-temperature tail gas filter for the vanadium titano-magnetite pre-reduction rotary kiln according to claim 1, wherein the filtering part of the high-temperature metal fiber filter bag (12 c) is a FeCrAl metal fiber felt.
3. The high-temperature tail gas filter for the vanadium titano-magnetite pre-reduction rotary kiln according to claim 1, wherein each filter unit (1) is communicated with the vanadium titano-magnetite pre-reduction rotary kiln through the same gas inlet pipe (2); the air inlet pipe (2) comprises a plurality of first cylindrical sections (21) and a contraction section (22) which is arranged between the two first cylindrical sections (21) and has a contraction trend along the air inlet direction, and the filtering unit (1) is connected with the contraction section (22).
4. The high-temperature tail gas filter for the vanadium titano-magnetite pre-reduction rotary kiln according to any one of claims 1 to 3, wherein each filtering unit (1) is communicated with the boiler structure through the same gas outlet pipe (3); the air outlet pipe (3) comprises a plurality of second cylindrical sections (31) and an expansion section (32) which is arranged between the two second cylindrical sections (31) and has an expansion trend along the air outlet direction, and the filtering unit (1) is connected with the expansion section (32).
5. The high-temperature tail gas filter for the vanadium titano-magnetite pre-reduction rotary kiln as claimed in claim 1, wherein the high-temperature metal fiber filter bag (12 c) comprises a top flange structure and a bottom flange structure, the top flange structure is located in the purification chamber (13) and is jointed with the top of the upper flower plate (12 a), and the bottom flange structure is located in the filter chamber (12) and is jointed with the top of the lower flower plate (12 b).
6. The high-temperature tail gas filter for the vanadium titano-magnetite pre-reduction rotary kiln according to claim 1 or 5, wherein a plurality of air passing holes (12 d) are uniformly distributed on the lower flower plate (12 b), the air passing holes (12 d) are positioned outside the hole position communicated with the high-temperature metal fiber filter bag (12 c), and a high-temperature metal fiber net is attached to the bottom of the lower flower plate (12 b).
7. The high-temperature tail gas filter for the vanadium titano-magnetite pre-reduction rotary kiln according to claim 6, wherein the filtering part of the high-temperature metal fiber net is FeCrAl metal fiber felt.
8. The high-temperature tail gas filter for the vanadium titano-magnetite pre-reduction rotary kiln according to claim 1, wherein an upper layer and a lower layer of fixing structures (5) are arranged in the cylinder (4) of the filtering unit (1), each layer of fixing structure (5) comprises at least four plate bodies (51) which are uniformly distributed along the axis of the cylinder (4), and the edge of the lower flower plate (12 b) is clamped between the two layers of fixing structures (5).
9. The high-temperature tail gas filter for the vanadium titano-magnetite pre-reduction rotary kiln according to claim 8, wherein a through groove body is correspondingly arranged on the cylinder body (4) and corresponds to the plate body (51) in the fixing structure (5), a U-shaped clamping block (6) penetrates through the through groove body, one side of the U-shaped clamping block (6) in the cylinder body (4) clamps the two corresponding plate bodies (51) in the two layers of fixing structure (5), one side of the U-shaped clamping block (6) outside the cylinder body (4) freely moves vertically under the guidance of a guide structure (7), and the guide structure (7) seals the through groove body.
10. The high temperature tail gas filter for a vanadium titano-magnetite pre-reduction rotary kiln according to claim 9, wherein the guiding structure (7) comprises an annular structure (71) arranged around the cylinder (4), an upper cover and a lower cover;
the annular structure (71) is attached to the outer wall of the barrel (4), a guide groove for guiding the U-shaped clamping block (6) is formed in the inner wall of the annular structure, and the upper cover and the lower cover are respectively arranged at the top and the bottom of the annular structure (71) and used for plugging the top and the bottom of the guide groove;
and a cooling medium circulates in the annular structure (71), and an annular sealing structure which is attached to the outer wall of the barrel (4) is arranged on the inner wall of an annular region which is surrounded by the upper cover and the lower cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011387701.7A CN112642227B (en) | 2020-12-01 | 2020-12-01 | High-temperature tail gas filter for vanadium titano-magnetite pre-reduction rotary kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011387701.7A CN112642227B (en) | 2020-12-01 | 2020-12-01 | High-temperature tail gas filter for vanadium titano-magnetite pre-reduction rotary kiln |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112642227A true CN112642227A (en) | 2021-04-13 |
| CN112642227B CN112642227B (en) | 2021-07-06 |
Family
ID=75349894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011387701.7A Active CN112642227B (en) | 2020-12-01 | 2020-12-01 | High-temperature tail gas filter for vanadium titano-magnetite pre-reduction rotary kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112642227B (en) |
Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0063202A1 (en) * | 1981-04-13 | 1982-10-27 | Aldo Bea | Filtering cartridge for fluid filtering systems, in particular gaseous fluid filtering systems |
| US20040154976A1 (en) * | 2003-02-07 | 2004-08-12 | Filtertec Services Inc. | Fluid filter |
| US20050060972A1 (en) * | 1999-02-26 | 2005-03-24 | Gieseke Steven Scott | Filter arrangement; sealing system; and methods |
| WO2008061145A2 (en) * | 2006-11-14 | 2008-05-22 | Johnson Crushers International | Filter system for internal combustion engines operated in a contaminated atmosphere |
| CN103127786A (en) * | 2011-11-22 | 2013-06-05 | 日本斯频德制造株式会社 | Dust collecting device |
| CN104740944A (en) * | 2015-04-02 | 2015-07-01 | 成都瑞柯林工程技术有限公司 | Filtering device used for gas-solid separation |
| US9278185B2 (en) * | 2008-09-04 | 2016-03-08 | Caire Inc. | System and method for controlling bolus pulse duration based on inspiratory time in an oxygen concentation system |
| KR20170043255A (en) * | 2015-10-13 | 2017-04-21 | 강신기 | Dust Collector having Air Guide Panel |
| CN106693538A (en) * | 2017-03-24 | 2017-05-24 | 苏州格劳兰净化设备有限公司 | Combined dust removal equipment |
| CN207667317U (en) * | 2017-09-18 | 2018-07-31 | 河南中材环保有限公司 | A kind of bag cage flap seat fixed structure and its pressing plate |
| CN108402758A (en) * | 2018-05-17 | 2018-08-17 | 安吉金跃家具有限公司 | A kind of office rotary chair of more stability |
| CN108452603A (en) * | 2018-05-28 | 2018-08-28 | 南漳县华胜机械制造有限公司 | Grain-drying dust removal device |
| CN208927660U (en) * | 2018-08-21 | 2019-06-04 | 天津辰力工程设计有限公司 | A kind of solid caustic soda drier that can remove moisture in vinyl chloride |
| CN209138851U (en) * | 2018-09-10 | 2019-07-23 | 遵化市今日成功废品回收有限公司 | A kind of efficient slag grinding mechanism convenient for reducing power consumption |
| CN110339640A (en) * | 2019-08-16 | 2019-10-18 | 重庆市赛特刚玉有限公司 | A kind of dumping furnace self-baking electrode Hot dust removal device |
| US10655611B2 (en) * | 2011-11-30 | 2020-05-19 | At&T Intellectual Property I, L.P. | Method and apparatus for harvesting energy based on the random occurrence of common direction molecules |
| CN111603854A (en) * | 2020-05-24 | 2020-09-01 | 江苏方舟环保科技有限公司 | Bag type dust collector for cement plant warehouse top |
| US10856711B2 (en) * | 2016-05-03 | 2020-12-08 | Lg Electronics Inc. | Vacuum cleaner |
| CN212283243U (en) * | 2020-03-17 | 2021-01-05 | 福建远致环保科技有限公司 | Head flange pressing device of metal filter bag |
-
2020
- 2020-12-01 CN CN202011387701.7A patent/CN112642227B/en active Active
Patent Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0063202A1 (en) * | 1981-04-13 | 1982-10-27 | Aldo Bea | Filtering cartridge for fluid filtering systems, in particular gaseous fluid filtering systems |
| US20050060972A1 (en) * | 1999-02-26 | 2005-03-24 | Gieseke Steven Scott | Filter arrangement; sealing system; and methods |
| US20040154976A1 (en) * | 2003-02-07 | 2004-08-12 | Filtertec Services Inc. | Fluid filter |
| WO2008061145A2 (en) * | 2006-11-14 | 2008-05-22 | Johnson Crushers International | Filter system for internal combustion engines operated in a contaminated atmosphere |
| US9278185B2 (en) * | 2008-09-04 | 2016-03-08 | Caire Inc. | System and method for controlling bolus pulse duration based on inspiratory time in an oxygen concentation system |
| CN103127786A (en) * | 2011-11-22 | 2013-06-05 | 日本斯频德制造株式会社 | Dust collecting device |
| US10655611B2 (en) * | 2011-11-30 | 2020-05-19 | At&T Intellectual Property I, L.P. | Method and apparatus for harvesting energy based on the random occurrence of common direction molecules |
| CN104740944A (en) * | 2015-04-02 | 2015-07-01 | 成都瑞柯林工程技术有限公司 | Filtering device used for gas-solid separation |
| KR20170043255A (en) * | 2015-10-13 | 2017-04-21 | 강신기 | Dust Collector having Air Guide Panel |
| US10856711B2 (en) * | 2016-05-03 | 2020-12-08 | Lg Electronics Inc. | Vacuum cleaner |
| CN106693538A (en) * | 2017-03-24 | 2017-05-24 | 苏州格劳兰净化设备有限公司 | Combined dust removal equipment |
| CN207667317U (en) * | 2017-09-18 | 2018-07-31 | 河南中材环保有限公司 | A kind of bag cage flap seat fixed structure and its pressing plate |
| CN108402758A (en) * | 2018-05-17 | 2018-08-17 | 安吉金跃家具有限公司 | A kind of office rotary chair of more stability |
| CN108452603A (en) * | 2018-05-28 | 2018-08-28 | 南漳县华胜机械制造有限公司 | Grain-drying dust removal device |
| CN208927660U (en) * | 2018-08-21 | 2019-06-04 | 天津辰力工程设计有限公司 | A kind of solid caustic soda drier that can remove moisture in vinyl chloride |
| CN209138851U (en) * | 2018-09-10 | 2019-07-23 | 遵化市今日成功废品回收有限公司 | A kind of efficient slag grinding mechanism convenient for reducing power consumption |
| CN110339640A (en) * | 2019-08-16 | 2019-10-18 | 重庆市赛特刚玉有限公司 | A kind of dumping furnace self-baking electrode Hot dust removal device |
| CN212283243U (en) * | 2020-03-17 | 2021-01-05 | 福建远致环保科技有限公司 | Head flange pressing device of metal filter bag |
| CN111603854A (en) * | 2020-05-24 | 2020-09-01 | 江苏方舟环保科技有限公司 | Bag type dust collector for cement plant warehouse top |
Non-Patent Citations (1)
| Title |
|---|
| 谢敏: "高温除尘用金属滤袋的设计要点", 《节能与环保》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112642227B (en) | 2021-07-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205253069U (en) | Radially can overhaul formula reactor entirely | |
| CN112642227B (en) | High-temperature tail gas filter for vanadium titano-magnetite pre-reduction rotary kiln | |
| CN104661722B (en) | The supportive grid of shape enhancing | |
| KR960000005B1 (en) | Apparatus for de dusting gases | |
| CN201722401U (en) | Full-welding type three-flow-process corrugated plate air preheater | |
| CN210862267U (en) | Rotary submerged arc furnace waste heat recovery device | |
| CN205925652U (en) | DMO reactor | |
| CN104654263B (en) | Cement kiln tail and tail bypass wind discharging exhaust-heat boiler | |
| CN101812563A (en) | High-temperature dust-removing device for processing converter gas | |
| CN207877772U (en) | A kind of refining furnace facilitating processing fuel residues | |
| CN109022052B (en) | Self-heating purifying furnace | |
| CN218097317U (en) | Power plant heat supply waste heat recovery device based on frequency conversion efficient control | |
| CN215447382U (en) | Vertical aluminum alloy solid smelting furnace | |
| CN205965792U (en) | Gas heat exchange type isothermal reactor | |
| CN111561820A (en) | Double-furnace type aluminum ingot smelting furnace with flue gas purification function | |
| CN111457746B (en) | Smoke waste heat recovery device for steelmaking electric furnace | |
| CN214665314U (en) | Multistage energy storage heat-retaining device | |
| CN219231743U (en) | Air inlet cooling device of bag-type dust collector | |
| CN216668361U (en) | Water-cooling dust excluding hood device | |
| CN2357302Y (en) | Machine cooling waste heat recovering device for sintering machine | |
| CN208604241U (en) | A kind of polycrystalline silicon ingot or purifying furnace | |
| CN214361490U (en) | Ferrous metal smelting device with ferric oxide recovery function | |
| CN212686668U (en) | Continuous scrap steel conveying device with preheating section having sealing function | |
| CN208846400U (en) | High temperature sludge heating surface | |
| CN217961672U (en) | High temperature resistant filter bag |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |