CN113648748A - A processing system for rotary hearth furnace high temperature dusty flue gas - Google Patents
A processing system for rotary hearth furnace high temperature dusty flue gas Download PDFInfo
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- CN113648748A CN113648748A CN202110940928.8A CN202110940928A CN113648748A CN 113648748 A CN113648748 A CN 113648748A CN 202110940928 A CN202110940928 A CN 202110940928A CN 113648748 A CN113648748 A CN 113648748A
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- flue gas
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- box body
- smoke
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- 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
- B01D46/26—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies rotatable
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- 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
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Abstract
The invention discloses a treatment system for high-temperature dust-containing flue gas of a rotary hearth furnace, which comprises a box body, wherein a conical ash discharge hopper is formed at the bottom of the box body, and a plurality of smoke inlets are circumferentially arranged on the side surface of the box body; the top of the box body is rotatably connected with a rotating shaft which is of a hollow pipe body structure, the top end of the rotating shaft is communicated with an external pipeline through a rotating joint, and a driving device for driving the rotating shaft to rotate is arranged at the top of the box body; a filter cartridge is arranged in the box body, the top of the filter cartridge is connected with the bottom end of the rotating shaft, and the interior of the filter cartridge is communicated with the interior of the rotating shaft; the outer circumferential surface of the filter cylinder is provided with a plurality of layers of filter components, and each layer of filter component comprises a plurality of filter elements which are uniformly and circumferentially arranged; the invention realizes the final filtration of the flue gas before the flue gas is discharged into the atmospheric environment, the filter material and the flue gas are in dynamic fit, the filtration effect on the flue gas is improved, the dust content in the flue gas is reduced, the emission standard of the flue gas is met, and the influence on the atmospheric environment is reduced.
Description
Technical Field
The invention relates to a treatment system for high-temperature dust-containing flue gas of a rotary hearth furnace, and belongs to the technical field of treatment of the high-temperature dust-containing flue gas of the rotary hearth furnace.
Background
The coal-based direct reduction of the rotary hearth furnace is a new iron-making process, main equipment is derived from an annular heating furnace for steel rolling, and although the initial purpose is only to treat iron-containing waste, the rotary hearth furnace is quickly developed and applied to the direct reduction of iron ore in countries such as the United states, Germany, Japan and the like; the process does not need preparation of fuel and deep processing of raw materials, and has positive effects on rational utilization of natural resources and protection of human environment, so the process is generally concerned by the metallurgical industry; the rotary hearth furnace is named after having an annular hearth and a rotatable hearth, the raw materials are carbon-containing pellets made of iron ore powder and coal powder, the carbon-containing pellets are added into the rotary hearth furnace after being subjected to material mixing, pellet making and drying, the temperature of the hearth can reach about 1250-1350 ℃, the carbon-containing pellets are quickly reduced by carbon in the process of rotating the hearth for one circle at the high temperature, the iron ore is generated into metallized pellets, and finally the metallized pellets are pushed out of the furnace by a spiral discharging machine and are conveyed to a melting furnace to be used as raw materials after being cooled or used as raw materials for electric furnace steelmaking; the rotary hearth furnace can discharge a large amount of high-temperature dust-containing flue gas in the production process, the waste heat of the high-temperature dust-containing flue gas in the normal production process of the rotary hearth furnace is recycled for power generation, and meanwhile, the high-concentration zinc ash in the high-temperature dust-containing flue gas is recycled, so that good economic benefit and social benefit can be generated, and the environmental protection targets of circular economy, energy conservation and emission reduction are met; at present, equipment such as a water-cooled cyclone dust collector, a gravity dust collector, a settling furnace, a waste heat boiler and the like are generally used for recovering the waste heat of high-temperature dust-containing flue gas and zinc ash in a matching manner; the flue gas is usually finally filtered by using a bag-type dust collector before being discharged into the atmospheric environment, and when the bag-type dust collector works, a filter bag is fixed and depends on the flow of the flue gas, so that the traditional bag-type dust collector has limited filtering effect, and the dust content in the flue gas is relatively high when the flue gas is discharged into the atmospheric environment; meanwhile, the traditional bag-type dust collector has high working pressure during working, high dust-cleaning treatment frequency of the filter bag, easy damage to the filter bag, failure of filtration, incapability of meeting the emission standard of flue gas and great influence on the atmospheric environment.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a treatment system for high-temperature dust-containing flue gas of a rotary hearth furnace, which is mainly used for carrying out final filtration on the flue gas before being discharged into the atmospheric environment, wherein a filter material is in dynamic fit with the flue gas, so that the filtration effect on the flue gas is improved, the dust content in the flue gas is reduced, the emission standard of the flue gas is met, and the influence on the atmospheric environment is reduced.
In order to achieve the above object, the present invention adopts the following technical solutions:
a treatment system for high-temperature dust-containing flue gas of a rotary hearth furnace comprises a box body, wherein a conical ash discharge hopper is formed at the bottom of the box body, an ash discharge port is formed at the bottom of the conical ash discharge hopper, and a plurality of smoke inlets are circumferentially formed in the side surface of the box body; the top of the box body is rotatably connected with a rotating shaft, the rotating shaft is of a hollow pipe body structure, the rotating shaft is vertically arranged along the axis in the box body, the top end of the rotating shaft is communicated with an external pipeline through a rotating joint, and a driving device for driving the rotating shaft to rotate is arranged at the top of the box body; a filter cartridge is arranged in the box body and is vertically arranged along the axis in the box body, the top of the filter cartridge is connected with the bottom end of the rotating shaft, and the interior of the filter cartridge is communicated with the interior of the rotating shaft; the outer circumference of the filter cartridge is provided with a plurality of layers of filter components, and each layer of filter component comprises a plurality of filter elements which are uniformly and circumferentially arranged.
As a further preferred aspect of the present invention, the rotary joint is a three-way structure having two outlets, one of the outlets of the rotary joint of the three-way structure is communicated with an external smoke evacuation pipeline, the other outlet of the rotary joint of the three-way structure is communicated with an external compressed air pipeline, and valves are respectively disposed on the external smoke evacuation pipeline and the external compressed air pipeline; during ash removal, an external smoke exhaust pipeline is closed, an external compressed air pipeline is opened, clean compressed air enters the interior of the filter cylinder through the rotating shaft, and reverse ash blowing is realized on the filter element; and after the ash removal treatment is finished, closing the external compressed air pipeline, opening the external smoke exhaust pipeline and recovering to work normally.
As a further preferred aspect of the present invention, a supporting assembly is disposed inside the box body, the supporting assembly includes a supporting seat and a plurality of supporting rods, and the supporting seat is connected to the inner side wall of the box body through the plurality of supporting rods; a cylindrical shaft is vertically arranged at the center of the bottom of the filter cylinder and is rotationally connected with the supporting seat through a plane bearing; to improve the stability of the filter cartridge when rotating.
As a further preference of the present invention, the cross-sectional shape of the support bar is triangular, and one of the planes of the support bar whose cross-sectional shape is triangular faces downward and is parallel to the horizontal plane; the other two planes of the supporting rod are upward and in an inclined plane state, so that dust is prevented from being accumulated on the supporting rod.
As a further preferred aspect of the invention, four smoke inlets are circumferentially arranged on the side surface of the box body, and the smoke inlets of the four smoke inlets are sequentially connected end to form a square; the uniformity of the flue gas when entering the box and the mobility of the flue gas after entering the box are improved.
As a further preferred aspect of the present invention, the smoke inlet directions of the four smoke inlets clockwise surround the filter cartridge, and the driving device drives the rotating shaft to drive the filter cartridge to rotate counterclockwise; when the cartridge filter anticlockwise rotates, the filter element on the cartridge filter just impacts with the smoke entering from the smoke inlet relatively, so that the filter element has a disturbing effect on the entering smoke, and when the filtering effect is improved, the smoke has a certain purging effect on the dust gathered on the surface of the filter element, thereby reducing the ash removal treatment times of the filter element.
As a further preferable aspect of the present invention, the smoke inlet is a strip-shaped hole extending in the axial direction of the box body; the flue gas is enabled to enter the box body through the air curtain effect, the uniformity of the flue gas entering the box body is improved, the flue gas is enabled to be in better contact with the filtering element, and the filtering efficiency is improved.
As a further preferred aspect of the present invention, a cross-flow fan is disposed at the smoke inlet, an inlet end of the cross-flow fan is communicated with an external smoke supply pipeline and an external air pipeline, valves are disposed on the external smoke supply pipeline and the external air pipeline, respectively, and an outlet end of the cross-flow fan is communicated with the smoke inlet; the cross-flow fan is used for improving the air curtain effect formed when the flue gas enters the box body; during the ash removal treatment, the external smoke supply pipeline is closed, the external air pipeline is opened, and the cross-flow fan blows clean air into the box body so as to be matched with the ash removal treatment; and after the ash removal treatment is finished, closing the external air pipeline, opening the external smoke supply pipeline and recovering to work normally.
As a further preference of the present invention, the filter elements in two adjacent layers of filter assemblies are staggered; the three-dimensional layering effect of the multi-layer filtering component arranged on the outer circumferential surface of the filter cartridge is increased, so that the smoke is better contacted with the filtering element, and the filtering effect and efficiency are improved.
As a further preference of the present invention, the lengths of the filter elements in two adjacent layers of filter assemblies are different, wherein the length of the filter element in one layer of filter assembly is greater than the length of the filter element in the other layer of filter assembly; the space between layers of the filtering component is increased, so that the flowing of the smoke is disordered, the smoke is better contacted with the filtering element, and the filtering effect and the efficiency are improved.
The invention has the advantages that:
the cross-flow fan blows the smoke into the box body from the smoke inlet through an air curtain effect, the smoke inlet directions of the four smoke inlets clockwise surround the filter cartridge, the driving device drives the rotating shaft to drive the filter cartridge to rotate anticlockwise, when the filter cartridge rotates anticlockwise, the filter element on the filter cartridge just impacts the smoke entering from the smoke inlet, and the filter element has a disturbance effect on the entering smoke; in the process, under the negative pressure action of an external smoke exhaust pipeline, the filter element filters smoke, clean smoke enters the filter cartridge and flows into the external smoke exhaust pipeline through the rotating shaft and the rotating joint, and filtered dust is left in the box body and settled in the conical dust exhaust hopper and finally discharged from a dust exhaust port at the bottom of the conical dust exhaust hopper; the flue gas before being discharged into the atmospheric environment is finally filtered, the filtering material is dynamically matched with the flue gas, the filtering effect on the flue gas is improved, the dust content in the flue gas is reduced, the emission standard of the flue gas is met, and the influence on the atmospheric environment is reduced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic top view of the present invention with the top of the housing removed;
FIG. 3 is a schematic top view of the support assembly of the present invention;
FIG. 4 is a schematic view of the construction of the support pole of the present invention;
FIG. 5 is a schematic illustration of the positioning of filter elements in two adjacent layers of a filter assembly in accordance with the present invention in practice;
FIG. 6 is a schematic view of the construction of the filter element in two adjacent layers of the filter assembly in actual use of the invention;
the meaning of the reference symbols in the figures:
1-box body, 2-conical ash discharge hopper, 3-ash discharge port, 4-smoke inlet, 5-rotating shaft, 6-rotating joint, 7-driving device, 8-filter cartridge, 9-filter element, 10-supporting seat, 11-supporting rod, 12-cylindrical shaft and 14-cross flow fan.
Detailed Description
The invention is described in detail below with reference to the figures and the embodiments.
As shown in fig. 1-4, the present embodiment is a processing system for high-temperature dusty flue gas of a rotary hearth furnace, including a box body 1, a conical ash discharge hopper 2 is formed at the bottom of the box body 1, an ash discharge port 3 is arranged at the bottom of the conical ash discharge hopper 2, and a plurality of smoke inlets 4 are circumferentially arranged on the side surface of the box body 1; the top of the box body 1 is rotatably connected with a rotating shaft 5, the rotating shaft 5 is of a hollow pipe body structure, the rotating shaft 5 is vertically arranged along the axis in the box body 1, the top end of the rotating shaft 5 is communicated with an external pipeline through a rotating joint 6, and the top of the box body 1 is provided with a driving device 7 for driving the rotating shaft 5 to rotate; a filter cartridge 8 is arranged in the box body 1, the filter cartridge 8 is vertically arranged along the axis in the box body 1, the top of the filter cartridge 8 is connected with the bottom end of the rotating shaft 5, and the interior of the filter cartridge 8 is communicated with the interior of the rotating shaft 5; a plurality of layers of filter components are arranged on the outer circumferential surface of the filter cylinder 8, and each layer of filter component comprises a plurality of filter elements 9 which are uniformly and circumferentially arranged; the filter element 9 in this embodiment adopts a ceramic fiber tube, which has firm texture, temperature resistance and no combustion, and good filtering effect, and can also adopt other filter elements 9 in practical application.
In this embodiment, the rotary joint 6 is a three-way structure having two outlets, one outlet of the three-way structure rotary joint 6 is communicated with an external smoke exhaust pipeline, the other outlet of the three-way structure rotary joint 6 is communicated with an external compressed air pipeline, and valves are respectively arranged on the external smoke exhaust pipeline and the external compressed air pipeline; during ash removal, an external smoke exhaust pipeline is closed, an external compressed air pipeline is opened, clean compressed air enters the interior of the filter cylinder 8 through the rotating shaft 5, and reverse ash blowing is realized on the filter element 9; and after the ash removal treatment is finished, closing the external compressed air pipeline, opening the external smoke exhaust pipeline and recovering to work normally.
In the embodiment, a supporting assembly is arranged in the box body 1, the supporting assembly comprises a supporting seat 10 and a plurality of supporting rods 11, and the supporting seat 10 is connected with the inner side wall of the box body 1 through the plurality of supporting rods 11; a cylindrical shaft 12 is vertically arranged at the center of the bottom of the filter cylinder 8, and the cylindrical shaft 12 is rotatably connected with the supporting seat 10 through a plane bearing; to improve the stability of the filter cartridge 8 during rotation; in this embodiment, the cross-sectional shape of the support bar 11 is a triangle, and one of the planes of the support bar 11 having the cross-sectional shape of the triangle faces downward and is parallel to the horizontal plane; the other two planes of the support rod 11 are upward and in an inclined state, so that dust is prevented from being accumulated on the support rod 11.
In the embodiment, four smoke inlets 4 are circumferentially arranged on the side surface of the box body 1, and the smoke inlets 4 are sequentially connected end to end in the smoke inlet direction to form a square; the uniformity of the flue gas entering the box body 1 and the fluidity of the flue gas entering the box body 1 are improved; the filter cartridges 8 are clockwise surrounded in the smoke inlet directions of the four smoke inlet openings 4, and the driving device 7 drives the rotating shaft 5 to drive the filter cartridges 8 to rotate anticlockwise; when the filter cartridge 8 rotates anticlockwise, the filter element 9 on the filter cartridge 8 just impacts the smoke entering from the smoke inlet 4 relatively, so that the filter element 9 has a disturbing effect on the entering smoke, and when the filtering effect is improved, the smoke has a certain purging effect on the dust gathered on the surface of the filter element 9, thereby reducing the ash removal treatment times of the filter element 9.
In this embodiment, the smoke inlet 4 is a strip-shaped hole extending along the axial direction of the box body 1; the flue gas enters the box body 1 by an air curtain effect, so that the uniformity of the flue gas entering the box body 1 is improved, the flue gas is in better contact with the filter element 9, and the filtering efficiency is improved; a cross-flow fan 14 is arranged at the smoke inlet 4, the inlet end of the cross-flow fan 14 is communicated with an external smoke supply pipeline and an external air pipeline, valves are respectively arranged on the external smoke supply pipeline and the external air pipeline, and the outlet end of the cross-flow fan 14 is communicated with the smoke inlet 4; the cross-flow fan 14 is used for improving the air curtain effect formed when the flue gas enters the box body 1; during the ash removal treatment, an external smoke supply pipeline is closed, an external air pipeline is opened, and a cross-flow fan 14 blows clean air into the box body 1 to be matched with the ash removal treatment; and after the ash removal treatment is finished, closing the external air pipeline, opening the external smoke supply pipeline and recovering to work normally.
In practical application, the filter elements 9 in two adjacent layers of filter assemblies are arranged in a staggered manner; as shown in fig. 5, the filter element 9 drawn by a solid line is the filter element 9 located at the upper layer, and the filter element 9 drawn by a broken line is the filter element 9 located at the lower layer; the three-dimensional layering effect of the multi-layer filtering component arranged on the outer circumference of the filtering cylinder 8 is increased, so that the smoke is better contacted with the filtering element 9, and the filtering effect and the efficiency are improved.
In practical application, the lengths of the filter elements 9 in two adjacent layers of filter assemblies can be different, wherein the length of the filter element 9 in one layer of filter assembly is greater than that of the filter element 9 in the other layer of filter assembly; as shown in fig. 6, the longer filter element 9 is the filter element 9 located at the upper layer, and the shorter filter element 9 is the filter element 9 located at the lower layer; the space between layers of the filtering component is increased, so that the flowing of the smoke is disordered, the smoke is better contacted with the filtering element 9, and the filtering effect and the efficiency are improved.
The working process of the embodiment is as follows:
the cross-flow fan 14 blows the smoke into the box body 1 from the smoke inlet 4 by the air curtain effect, the smoke inlet directions of the four smoke inlets 4 clockwise surround the filter cartridge 8, the driving device 7 drives the rotating shaft 5 to drive the filter cartridge 8 to rotate anticlockwise, when the filter cartridge 8 rotates anticlockwise, the filter element 9 on the filter cartridge 8 just impacts the smoke entering from the smoke inlet 4, and the filter element 9 has the disturbance effect on the entering smoke; in the process, under the negative pressure action of an external smoke exhaust pipeline, the filter element 9 filters smoke, clean smoke enters the filter cylinder 8 and flows into the external smoke exhaust pipeline through the rotating shaft 5 and the rotating joint 6, filtered dust is left in the box body 1 and settled in the conical ash discharge hopper 2, and finally is discharged from the ash discharge port 3 at the bottom of the conical ash discharge hopper 2; the flue gas before being discharged into the atmospheric environment is finally filtered, the filtering material is dynamically matched with the flue gas, the filtering effect on the flue gas is improved, the dust content in the flue gas is reduced, the emission standard of the flue gas is met, and the influence on the atmospheric environment is reduced.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In the description of the present invention, it should be noted that the terms "mounted," "connected," and "disposed" are to be construed broadly and may be, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed unless otherwise explicitly stated or limited; can be mechanically or electrically connected; the two elements can be directly connected, indirectly connected through an intermediate medium, or communicated with each other inside; the specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The foregoing shows and describes the general principles, principal features and advantages of the invention; it should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by using equivalent alternatives or equivalent variations fall within the scope of the present invention.
Claims (10)
1. The treatment system for the high-temperature dust-containing flue gas of the rotary hearth furnace is characterized by comprising a box body, wherein a conical ash discharge hopper is formed at the bottom of the box body, an ash discharge port is formed at the bottom of the conical ash discharge hopper, and a plurality of smoke inlets are circumferentially formed in the side surface of the box body; the top of the box body is rotatably connected with a rotating shaft, the rotating shaft is of a hollow pipe body structure, the rotating shaft is vertically arranged along the axis in the box body, the top end of the rotating shaft is communicated with an external pipeline through a rotating joint, and a driving device for driving the rotating shaft to rotate is arranged at the top of the box body; a filter cartridge is arranged in the box body and is vertically arranged along the axis in the box body, the top of the filter cartridge is connected with the bottom end of the rotating shaft, and the interior of the filter cartridge is communicated with the interior of the rotating shaft; the outer circumference of the filter cartridge is provided with a plurality of layers of filter components, and each layer of filter component comprises a plurality of filter elements which are uniformly and circumferentially arranged.
2. The system for treating high-temperature dusty flue gas of a rotary hearth furnace according to claim 1, wherein the rotary joint is a three-way structure having two outlets, one outlet of the three-way structure rotary joint is communicated with an external smoke exhaust pipeline, the other outlet of the three-way structure rotary joint is communicated with an external compressed air pipeline, and valves are respectively arranged on the external smoke exhaust pipeline and the external compressed air pipeline.
3. The system for treating high-temperature dusty flue gas of a rotary hearth furnace according to claim 1, wherein a support assembly is arranged inside the box body, the support assembly comprises a support seat and a plurality of support rods, and the support seat is connected with the inner side wall of the box body through the plurality of support rods; the bottom center of the filter cartridge is vertically provided with a cylindrical shaft, and the cylindrical shaft is rotatably connected with the supporting seat through a plane bearing.
4. The system for treating high-temperature dusty flue gas of a rotary hearth furnace according to claim 3, wherein the cross-sectional shape of the support rods is triangular, and one of the planes of the support rods with the cross-sectional shape of the triangle faces downward and is parallel to the horizontal plane.
5. The system for treating the high-temperature dust-containing flue gas of the rotary hearth furnace according to claim 1, wherein four smoke inlets are circumferentially arranged on the side surface of the box body, and the smoke inlets of the four smoke inlets are sequentially connected end to form a square.
6. The system for treating high-temperature dusty flue gas of the rotary hearth furnace according to claim 5, wherein the smoke inlet direction of the four smoke inlets surrounds the filter cylinder clockwise, and the driving device drives the rotating shaft to drive the filter cylinder to rotate anticlockwise.
7. The system for treating high-temperature dusty flue gas of a rotary hearth furnace according to any one of claims 1, 5 and 6, wherein the flue gas inlet is a strip-shaped hole extending along the axial direction of the box body.
8. The system for treating high-temperature dusty smoke of the rotary hearth furnace according to claim 7, wherein a cross-flow fan is arranged at the smoke inlet, the inlet end of the cross-flow fan is communicated with an external smoke supply pipeline and an external air pipeline, valves are respectively arranged on the external smoke supply pipeline and the external air pipeline, and the outlet end of the cross-flow fan is communicated with the smoke inlet.
9. The system for treating high-temperature dusty flue gas of a rotary hearth furnace according to claim 1, wherein the filter elements in two adjacent layers of filter assemblies are arranged in a staggered manner.
10. The system for treating high-temperature dusty flue gas of a rotary hearth furnace according to claim 1 or 9, wherein the lengths of the filter elements in two adjacent layers of filter assemblies are different, and the length of the filter element in one layer of filter assembly is larger than that of the filter element in the other layer of filter assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110940928.8A CN113648748A (en) | 2021-08-17 | 2021-08-17 | A processing system for rotary hearth furnace high temperature dusty flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110940928.8A CN113648748A (en) | 2021-08-17 | 2021-08-17 | A processing system for rotary hearth furnace high temperature dusty flue gas |
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| Publication Number | Publication Date |
|---|---|
| CN113648748A true CN113648748A (en) | 2021-11-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110940928.8A Withdrawn CN113648748A (en) | 2021-08-17 | 2021-08-17 | A processing system for rotary hearth furnace high temperature dusty flue gas |
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| CN (1) | CN113648748A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115845601A (en) * | 2023-02-28 | 2023-03-28 | 烟台恒海环境科技有限公司 | Energy-saving and environment-friendly device for desulfurization and denitrification of flue gas of industrial boiler |
-
2021
- 2021-08-17 CN CN202110940928.8A patent/CN113648748A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115845601A (en) * | 2023-02-28 | 2023-03-28 | 烟台恒海环境科技有限公司 | Energy-saving and environment-friendly device for desulfurization and denitrification of flue gas of industrial boiler |
| CN115845601B (en) * | 2023-02-28 | 2023-05-09 | 烟台恒海环境科技有限公司 | Energy-saving and environment-friendly device for desulfurizing and denitrating flue gas of industrial boiler |
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Application publication date: 20211116 |