CN216440285U - Denitration system for alumina calcination - Google Patents
Denitration system for alumina calcination Download PDFInfo
- Publication number
- CN216440285U CN216440285U CN202122443386.1U CN202122443386U CN216440285U CN 216440285 U CN216440285 U CN 216440285U CN 202122443386 U CN202122443386 U CN 202122443386U CN 216440285 U CN216440285 U CN 216440285U
- Authority
- CN
- China
- Prior art keywords
- heat
- wall
- heat exchange
- pipe
- exchange cavity
- 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.)
- Active
Links
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 title claims abstract description 13
- 238000001354 calcination Methods 0.000 title claims abstract description 13
- 238000007789 sealing Methods 0.000 claims abstract description 21
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 19
- 230000000149 penetrating effect Effects 0.000 claims abstract description 3
- 238000001514 detection method Methods 0.000 claims description 10
- 238000009413 insulation Methods 0.000 claims description 10
- 239000000779 smoke Substances 0.000 claims description 10
- 229920000742 Cotton Polymers 0.000 claims description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 36
- 239000003546 flue gas Substances 0.000 abstract description 36
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- 229910002651 NO3 Inorganic materials 0.000 description 4
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 238000003912 environmental pollution Methods 0.000 description 3
- 241000208125 Nicotiana Species 0.000 description 2
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- -1 graphite alkene Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
Landscapes
- Treating Waste Gases (AREA)
Abstract
The utility model discloses a denitration system for alumina calcination, which relates to the field of denitration equipment and comprises a heat exchange cavity, wherein heat conduction oil pipes extending to the outer sides of two ends of the heat exchange cavity are sleeved in the heat exchange cavity, a sealing plate fixedly connected with the inner wall of the heat exchange cavity is sleeved on the outer wall of each heat conduction oil pipe, a graphene sheet is sleeved on the outer wall of each heat conduction oil pipe on one side of the sealing plate, a spiral pipe is sleeved on the outer wall of each heat conduction oil pipe on the other side of the sealing plate, and one end of each spiral pipe is connected with an air inlet hopper penetrating through the sealing plate. According to the utility model, the sealing plate, the graphene sheet, the graphene strip spiral pipe, the guide pipe, the heat conduction oil pipe and the air inlet hopper are matched with each other, so that the flue gas entering the heat exchange cavity is blocked, the cross section area of a flue gas flow path is reduced, the flue gas is driven to remain in the heat exchange cavity for a longer time, the heat in the flue gas is fully contacted with the heat conduction oil pipe, and the heat in the flue gas is fully utilized.
Description
Technical Field
The utility model relates to the field of denitration equipment, in particular to a denitration system for alumina calcination.
Background
The method comprises the steps of calcining at high temperature in a rotary kiln of a company, removing residual moisture in industrial alumina by firing, producing coarse powder with different crystal grains by controlling parameters such as temperature, rotating speed and the like of the kiln, and then sequentially mixing materials by a powder mixer and grinding by an ultrafine grinding machine to obtain alumina micropowder.
The sintering zone of alumina produces nitrogen oxide, leads to removing dust and discharges nitrogen oxide in the flue gas and exceeds standard, must process the emission, and heat in the flue gas of emission directly loses, can't carry out make full use of to it, does not accord with current environmental protection theory.
Disclosure of Invention
Based on this, the utility model aims to provide a denitration system for alumina calcination, so as to solve the technical problem that heat in flue gas cannot be utilized in the prior art.
In order to achieve the purpose, the utility model provides the following technical scheme: the denitration system for aluminum oxide calcination comprises a heat exchange cavity, wherein heat conduction oil pipes extending to the outer sides of two ends of the heat exchange cavity are sleeved in the heat exchange cavity, a sealing plate fixedly connected with the inner wall of the heat exchange cavity is sleeved on the outer wall of the heat conduction oil pipe, a graphene sheet is sleeved on one side of the sealing plate, a spiral pipe is sleeved on the other side of the sealing plate on the outer wall of the heat conduction oil pipe, one end of the spiral pipe is connected with an air inlet hopper penetrating through the sealing plate, a guide pipe is arranged at the other end of the spiral pipe, a denitration chamber is arranged above one side of the heat exchange cavity, one end of the denitration chamber is connected with a detection pipe, the tail end of the detection pipe is connected with a heat insulation layer, the top end of the heat conduction oil pipe is connected with a smoke outlet pipe, a first electromagnetic valve is connected and mounted on the outer wall of the heat insulation layer, a second electromagnetic valve is mounted on one side of the first electromagnetic valve on the outer wall of the heat insulation layer, the bottom of insulating layer is connected with the back flow of being connected with heat transfer chamber one end.
Through adopting above-mentioned technical scheme, order about the flue gas longer in the time that the heat transfer intracavity portion persists for heat in the flue gas fully contacts with the conduction oil pipe, simultaneously, detects the flue gas after the denitration constantly, avoids the not thorough phenomenon that causes environmental pollution in the outside of discharging of denitration.
The utility model is further set that the top end of the heat exchange cavity is connected with a smoke inlet pipe, and the top end of the heat exchange cavity is provided with an L pipe connected with one end of the denitration bin.
Through adopting above-mentioned technical scheme, conveniently carry external flue gas to heat transfer chamber temple to and can transmit the inside flue gas in heat transfer chamber to the outside.
The utility model is further provided that a heat insulation layer is fixed on the outer wall of the heat exchange cavity, and heat insulation cotton connected with the outer wall of the heat exchange cavity is arranged on the inner wall of the heat insulation layer.
By adopting the technical scheme, the heat loss in the heat exchange cavity is blocked, and the purpose of heat preservation is achieved.
The utility model is further arranged in such a way that a plurality of groups of graphene strips extending into the heat conduction oil pipe are arranged on the inner wall of the graphene sheet.
Through adopting above-mentioned technical scheme for the inside heat transfer of graphite alkene piece is to heat conduction oil pipe's inside.
The utility model is further provided that the outer wall of the detection tube is sleeved with a detector, and the detector is electrically connected with external alarm equipment through a lead.
By adopting the technical scheme, when the nitrate is still detected in the flue gas, the alarm equipment is controlled to alarm in time, and personnel are reminded to make relevant measures.
In summary, the utility model mainly has the following beneficial effects:
1. according to the utility model, the sealing plate, the graphene sheet, the graphene strip spiral pipe, the guide pipe, the heat conduction oil pipe and the air inlet hopper are matched with each other, so that the flue gas entering the heat exchange cavity is blocked, the cross section area of a flue gas flow path is reduced, the flue gas is driven to remain in the heat exchange cavity for a longer time, the heat in the flue gas is fully contacted with the heat conduction oil pipe, and the heat in the flue gas is fully utilized;
2. according to the utility model, the detection pipe, the first electromagnetic valve, the second electromagnetic valve, the return pipe and the smoke outlet pipe are matched with each other, so that the denitrated smoke is detected constantly, and the phenomenon of environmental pollution caused by incomplete denitration discharging outside is avoided.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a side view of a graphene sheet of the present invention;
fig. 3 is a structural view of a heat exchange chamber of the present invention.
In the figure: 1. a heat exchange cavity; 2. a sealing plate; 3. a graphene sheet; 31. a graphene strip; 4. a spiral tube; 5. a conduit; 6. a heat conducting oil pipe; 7. an air inlet hopper; 8. a denitration bin; 9. a detection tube; 10. a smoke inlet pipe; 11. an L pipe; 12. a first electromagnetic valve; 13. a second electromagnetic valve; 14. a return pipe; 15. discharging the smoke tube; 16. an insulating layer.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
The following describes an embodiment of the present invention based on its overall structure.
A denitration system for aluminum oxide calcination is shown in figures 1-3 and comprises a heat exchange cavity 1, wherein heat conducting oil pipes 6 extending to the outer sides of two ends of the heat exchange cavity 1 are sleeved in the heat exchange cavity 1, a sealing plate 2 fixedly connected with the inner wall of the heat exchange cavity 1 is sleeved on the outer wall of the heat conducting oil pipe 6, a graphene sheet 3 is sleeved on one side of the sealing plate 2, which is positioned on the outer wall of the heat conducting oil pipe 6, the inner wall of the graphene sheet 3 is provided with a plurality of groups of graphene strips 31 extending into the heat conducting oil pipe 6, the other side of the sealing plate 2, which is positioned on the outer wall of the heat conducting oil pipe 6, is sleeved with a spiral pipe 4, one end of the spiral pipe 4 is connected with an air inlet hopper 7, the other end of the spiral pipe 4 is provided with a guide pipe 5, so as to block flue gas entering the heat exchange cavity 1, reduce the cross-sectional area of a flue gas flow path, so that the flue gas is remained in the heat exchange cavity 1 for a long time, and heat in the flue gas is fully contacted with the heat conducting oil pipe 6, thereby accomplish hot swivel, one side top in heat transfer chamber 1 is equipped with denitration storehouse 8, the top in heat transfer chamber 1 is connected with into tobacco pipe 10, the top in heat transfer chamber 1 is equipped with the L pipe 11 of being connected with denitration storehouse 8 one end, the one end in denitration storehouse 8 is connected with detecting tube 9, the end-to-end connection of detecting tube 9 has insulating layer 16, heat conduction oil pipe 6's top is connected with out tobacco pipe 15, insulating layer 16's outer wall even installs solenoid valve 12 No. one, No. two solenoid valves 13 are installed to one side of solenoid valve 12 lies in the outer wall of insulating layer 16, the bottom of insulating layer 16 is connected with the back flow 14 of being connected with 1 one end in heat transfer chamber, whether detect the existence nitre in the emission flue gas constantly, if exist, flow back to heat transfer chamber 1 inside once more, get into inside denitration storehouse 8 once more and carry out the secondary denitration, until getting rid of completely, can discharge the outside.
Referring to fig. 3, a heat insulation layer 16 is fixed on the outer wall of the heat exchange cavity 1, and heat insulation cotton connected with the outer wall of the heat exchange cavity 1 is arranged on the inner wall of the heat insulation layer 16 to insulate heat inside the heat exchange cavity 1 and prevent the heat from being transferred to the outside.
Referring to fig. 1, the outer wall of the detection tube 9 is sleeved with a detector, and the detector is electrically connected to an external alarm device through a wire, so that the detector detects denitrated flue gas in time, and the nitrate is prevented from being discharged to the outside along with the flue gas to cause environmental pollution.
The working principle of the utility model is as follows: firstly, the flue gas enters the interior of a heat exchange cavity 1 through a flue gas inlet pipe 10, a sealing plate 2 blocks the flue gas, so that heat in the flue gas is conducted to the interior of a heat conducting oil pipe 6 through a graphene sheet 3 and a graphene strip 31, thereby heating up heat conducting oil, finally the flue gas enters the interior of a spiral pipe 4 through an air inlet hopper 7, flows to the other side of the sealing plate 2 through a guide pipe 5, so that the flow speed of the flue gas is relatively low, the heat is driven to be fully transmitted to the interior of the heat conducting oil pipe 6, finally the flue gas enters the interior of a denitration bin 8 through an L pipe 11, is detected through a detection pipe 9, when nitrate still exists in the flue gas, a detector controls a first electromagnetic valve 12 to be closed, a second electromagnetic valve 13 is opened, the flue gas flows back to the interior of the heat exchange cavity 1 through a return pipe 14, denitration is carried out again through the denitration bin 8 until the detector detects that no nitrate exists in the flue gas, and the first electromagnetic valve 12 can be opened, and the second electromagnetic valve 13 is closed, so that the denitrated smoke is discharged through the smoke outlet pipe 15.
Although embodiments of the present invention have been shown and described, the present embodiments are merely illustrative of the present invention and are not intended to limit the present invention, and the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples, and those skilled in the art can make modifications, substitutions, variations, etc. of the embodiments as required without departing from the principle and spirit of the present invention, but within the scope of the claims of the present invention.
Claims (5)
1. Denitration system for alumina calcination includes heat transfer chamber (1), its characterized in that: the heat exchange device is characterized in that heat conduction oil pipes (6) extending to the outer sides of two ends of the heat exchange cavity (1) are sleeved inside the heat exchange cavity (1), sealing plates (2) fixedly connected with the inner wall of the heat exchange cavity (1) are sleeved on the outer walls of the heat conduction oil pipes (6) on one sides of the sealing plates (2), graphene sheets (3) are sleeved on the outer walls of the heat conduction oil pipes (6) on the other sides of the sealing plates (2), spiral pipes (4) are sleeved on the outer walls of the heat conduction oil pipes (6) on the other sides of the sealing plates (2), one ends of the spiral pipes (4) are connected with air inlet hoppers (7) penetrating through the sealing plates (2), guide pipes (5) are arranged on the other ends of the spiral pipes (4), a denitration bin (8) is arranged above one side of the heat exchange cavity (1), one end of the denitration bin (8) is connected with a detection pipe (9), the tail end of the detection pipe (9) is connected with a heat insulation layer (16), the top end of each heat conduction oil pipe (6) is connected with a smoke outlet pipe (15), the outer wall of insulating layer (16) even installs solenoid valve (12) No. one, No. two solenoid valves (13) are installed to the outer wall that one side of solenoid valve (12) is located insulating layer (16), the bottom of insulating layer (16) is connected with back flow (14) of being connected with heat transfer chamber (1) one end.
2. The denitration system for alumina calcination according to claim 1, wherein: the top end of the heat exchange cavity (1) is connected with a smoke inlet pipe (10), and the top end of the heat exchange cavity (1) is provided with an L pipe (11) connected with one end of the denitration bin (8).
3. The denitration system for alumina calcination according to claim 1, characterized in that: the heat-insulating layer (16) is fixed on the outer wall of the heat-exchanging cavity (1), and heat-insulating cotton connected with the outer wall of the heat-exchanging cavity (1) is arranged on the inner wall of the heat-insulating layer (16).
4. The denitration system for alumina calcination according to claim 1, characterized in that: the inner wall of the graphene sheet (3) is provided with a plurality of groups of graphene strips (31) extending into the heat-conducting oil pipe (6).
5. The denitration system for alumina calcination according to claim 1, characterized in that: the outer wall of the detection pipe (9) is sleeved with a detector, and the detector is electrically connected with external alarm equipment through a lead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122443386.1U CN216440285U (en) | 2021-10-11 | 2021-10-11 | Denitration system for alumina calcination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122443386.1U CN216440285U (en) | 2021-10-11 | 2021-10-11 | Denitration system for alumina calcination |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216440285U true CN216440285U (en) | 2022-05-06 |
Family
ID=81350566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122443386.1U Active CN216440285U (en) | 2021-10-11 | 2021-10-11 | Denitration system for alumina calcination |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216440285U (en) |
-
2021
- 2021-10-11 CN CN202122443386.1U patent/CN216440285U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101205124B (en) | Gypsum calcining system | |
| CN216440285U (en) | Denitration system for alumina calcination | |
| CA2562998A1 (en) | Probe and system for extracting gases from a process environment | |
| CN207622786U (en) | A kind of device judging high-temperature closed chute putty using surface temperature | |
| CN104748508B (en) | Coal slurry drying system | |
| CN211977609U (en) | Waste heat recycling system of shuttle kiln | |
| CN203447907U (en) | Pulse dust collector with heat recovery function | |
| CN214892431U (en) | Built-in single-section circulating multilayer drying kiln | |
| CN213221318U (en) | Dust remover for treating potassium chloride drying waste gas | |
| CN108286872A (en) | A kind of sand drying device | |
| CN202902842U (en) | Feeding device capable of reducing vanadium roasting large rotary kiln returned materials | |
| CN203550486U (en) | Multi-return-stroke fuel oil drying hot air furnace | |
| CN204705171U (en) | Segmented rotary furnace | |
| CN203940715U (en) | Electromagnetism heat conducting oil type particle powder environmental protection dryer | |
| CN202705062U (en) | Copper oxide calcination device | |
| CN112161475B (en) | Safe and environment-friendly electric calcining system | |
| CN206131699U (en) | Use dust collecting equipment in coal drying equipment | |
| CN210833111U (en) | Solidification distillation residue heating device | |
| CN111121474A (en) | Heat recovery and reuse system of shuttle kiln | |
| CN103712439A (en) | Rotary kiln outer drum waste heat collecting system and collecting method thereof | |
| CN215062029U (en) | Device for preventing cold sediment machine of cylinder scurries sediment | |
| CN215638855U (en) | Cold quick-witted front end hot-blast main of improved generation comb | |
| CN103063055B (en) | Bin type heat exchanger | |
| CN210426051U (en) | Tunnel kiln for preparing refractory insulating bricks | |
| CN203297849U (en) | Membrane type wall structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Denitration system for alumina calcination Effective date of registration: 20220930 Granted publication date: 20220506 Pledgee: Linqu Chengguan sub branch of Weifang Bank Co.,Ltd. Pledgor: Shandong yilaisheng New Material Technology Co.,Ltd. Registration number: Y2022980016909 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20220506 Pledgee: Linqu Chengguan sub branch of Weifang Bank Co.,Ltd. Pledgor: Shandong yilaisheng New Material Technology Co.,Ltd. Registration number: Y2022980016909 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |