CN209783314U - Waste gas and waste heat recycling device for active lime shaft kiln - Google Patents
Waste gas and waste heat recycling device for active lime shaft kiln Download PDFInfo
- Publication number
- CN209783314U CN209783314U CN201822203628.8U CN201822203628U CN209783314U CN 209783314 U CN209783314 U CN 209783314U CN 201822203628 U CN201822203628 U CN 201822203628U CN 209783314 U CN209783314 U CN 209783314U
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- CN
- China
- Prior art keywords
- fan
- kiln body
- pipeline
- combustion beam
- kiln
- 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.)
- Expired - Fee Related
Links
- 235000008733 Citrus aurantifolia Nutrition 0.000 title claims abstract description 20
- 235000011941 Tilia x europaea Nutrition 0.000 title claims abstract description 20
- 239000004571 lime Substances 0.000 title claims abstract description 20
- 239000002918 waste heat Substances 0.000 title claims abstract description 16
- 239000002912 waste gas Substances 0.000 title claims abstract description 13
- 238000004064 recycling Methods 0.000 title claims abstract description 10
- 238000002485 combustion reaction Methods 0.000 claims abstract description 55
- 239000000463 material Substances 0.000 claims abstract description 36
- 239000000428 dust Substances 0.000 claims abstract description 28
- 238000001354 calcination Methods 0.000 claims abstract description 24
- 239000007789 gas Substances 0.000 claims abstract description 18
- 238000001816 cooling Methods 0.000 claims abstract description 10
- 238000011084 recovery Methods 0.000 claims abstract description 4
- 239000003034 coal gas Substances 0.000 claims description 14
- 238000003860 storage Methods 0.000 claims description 9
- 238000011049 filling Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 17
- 239000003546 flue gas Substances 0.000 abstract description 17
- 238000000034 method Methods 0.000 abstract description 6
- 235000019738 Limestone Nutrition 0.000 abstract description 5
- 239000006028 limestone Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000004744 fabric Substances 0.000 abstract 1
- 239000000571 coke Substances 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 239000004575 stone Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
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
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
-
- 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
Landscapes
- Furnace Details (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
the utility model discloses an active lime shaft kiln waste gas waste heat recycling device, which comprises a gas pressurizing station, a pipeline, a first fan, a kiln body, a preheating zone material layer, a calcining zone material layer, a lower combustion beam, an upper combustion beam, a first beam type burner, a second beam type burner, a high-speed burner, a cooling layer, a second fan, a heat-conducting oil component, a cyclone dust collector, an air preheater, a gas heat exchanger, a cloth bag dust collector, a draught fan and a chimney, wherein one side of the gas pressurizing station is connected with the first fan through the pipeline, the first fan is connected with the middle part of the outer wall of the kiln body, the bottom of the inner wall of the kiln body is provided with the preheating zone material layer, the top of the preheating zone material layer is provided with the calcining zone material layer, the bottom of the calcining zone material layer is provided with a lower combustion beam, the upper combustion beam is arranged above the lower combustion beam, the limestone has, the method has good recovery effect on the waste heat after the production of the active lime and low dust discharge amount of the flue gas.
Description
Technical Field
The utility model relates to an active lime production technical field specifically is an active lime shaft kiln waste gas waste heat recovery utilizes device.
Background
With the development of the steel industry, active lime is not only used as a steelmaking slagging material, but also widely used in iron ore sintering, molten iron pretreatment and external refining processes, so that the steel industry has higher and higher requirements on the quality and yield of the active lime, and meanwhile, cost and energy balance also provide higher requirements on the production of a lime kiln.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an active lime shaft kiln waste gas waste heat recovery utilizes device to solve the problem that proposes in the above-mentioned background art.
In order to solve the technical problem, the utility model provides a following technical scheme: a waste gas and waste heat recycling device of an active lime shaft kiln comprises a gas pressurizing station, a pipeline, a first fan, a kiln body, a preheating material belt layer, a calcining material belt layer, a lower combustion beam, an upper combustion beam, a first beam type burner, a second beam type burner, a high-speed burner, a cooling layer, a second fan, a heat conduction oil assembly, a cyclone dust collector, an air preheater, a gas heat exchanger, a bag-type dust collector, an induced draft fan and a chimney, wherein one side of the gas pressurizing station is connected with the first fan through the pipeline, the first fan is connected with the middle of the outer wall of the kiln body, the preheating material belt layer is arranged at the bottom of the inner wall of the kiln body, the calcining material belt layer is arranged at the top of the preheating material belt layer, a lower combustion beam is arranged at the bottom in the calcining material belt layer, an upper combustion beam is arranged above the lower combustion beam, first beam type burners are arranged at the two ends of the lower combustion beam, and second beam, the first fan is respectively connected with the first beam type burner and the second beam type burner through pipelines, the top of the calcining material layer is provided with a cooling layer, one end of the bottom of the kiln body is provided with the second fan, one side of the kiln body is provided with a heat conduction oil assembly, the heat conduction oil assembly comprises an oil storage tank, an electric oiling pump, an expansion tank, a centrifugal oil pump, a filter and a radiator, the oil storage tank is arranged on one side of the kiln body and is connected with the expansion tank through the electric oiling pump, the expansion tank is connected with the filter through the centrifugal oil pump, the radiator is arranged on one side of the filter and is respectively connected with the lower combustion beam and the upper combustion beam through pipelines, one side of the top of the kiln body is connected with the cyclone dust collector through a pipeline, the cyclone dust collector is respectively connected with the air preheater and the gas heat exchanger through pipelines, and the air preheater and the gas heat exchanger are connected with the bag, the bag-type dust collector is connected with the chimney through the induced draft fan.
Furthermore, high-speed burners are arranged on the lower combustion beam and the upper combustion beam, and the high-speed burners are respectively provided with 14 sets.
Furthermore, the lower combustion beam and the upper combustion beam are both provided with burner beams, and the upper and lower layers of burner beams are arranged in a shape like a Chinese character 'jing'.
Furthermore, the first fan and the second fan are both connected with the kiln body through welding.
further, the ratio of the air supply volume and the air pressure supplied by the first fan and the second fan is 3: 7.
Furthermore, a pressure gauge is installed at one end of the top of the expansion tank, and a thermometer is installed at the other end of the top of the expansion tank.
Compared with the prior art, the utility model discloses the beneficial effect who reaches is: the coal gas pressurizing station pressurizes coal gas to 20kPa, the coal gas is guided to a calcining material belt layer in the kiln body through a pipeline, the materials are sufficiently combusted through a first beam type burner, a second beam type burner and a high-speed burner on a lower combustion beam and an upper combustion beam, a first fan works to generate primary air which is sprayed into the kiln body and is matched with the coal gas to form flame with strong penetrating power, a second fan works to generate secondary air which is blown from the bottom of the kiln body to complete preheating in the preheating material belt layer, the primary air is involved in the combustion process after reaching the calcining material belt layer, the flue gas which completes the combustion process in the calcining material belt layer further rises to a cooling layer, the flue gas and stones fully exchange heat with the materials through a heat transfer mode of conduction, convection and radiation, the temperature of the flue gas is reduced, the temperature of the stones is preheated, the flue gas is discharged out of the kiln body through the pipeline, enters a cyclone dust collector to be primarily purified, and the flue gas enters an air preheater and a, then the flue gas enters a bag-type dust remover through a pipeline to complete secondary purification, and the flue gas is purified until the dust content is below 30mg/Nm and is discharged outside through a draught fan and a chimney; by selecting the advanced calcining modes of the first beam type burner, the second beam type burner and the high-speed burner to replace the existing mixed calcining mode of coke and limestone, the limestone can be better calcined, the raw and over-burnt rate, the activity and the like of a lime product are greatly improved, the converter and coke oven gas are used for replacing the coke to serve as fuel, the fuel expenditure can be greatly saved, the waste heat of exhausted flue gas is fully recycled, and the amount of the dust exhausted out of the flue gas is greatly reduced to meet the strict environmental protection requirement.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the kiln body structure of the present invention;
FIG. 3 is a schematic structural view of the heat conducting oil assembly of the present invention;
In the figure: 1. a gas pressurization station; 2. a pipeline; 3. a first fan; 4. a kiln body; 5. preheating a material-carrying layer; 6. calcining the material carrying layer; 7. a lower combustion beam; 8. an upper combustion beam; 9. a first beam burner; 10. a second beam burner; 11. a high-speed burner; 12. a cooling layer; 13. a second fan; 14. a heat conducting oil component; 15. a cyclone dust collector; 16. an air preheater; 17. a gas heat exchanger; 18. a bag-type dust collector; 19. an induced draft fan; 20. a chimney; 21. an oil storage tank; 22. an electric petrol pump; 23. an expansion tank; 24. a centrifugal oil pump; 25. a filter; 26. a heat sink.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: a waste gas waste heat recycling device of an active lime shaft kiln comprises a gas pressurizing station 1, a pipeline 2, a first fan 3, a kiln body 4, a preheating strip material layer 5, a calcining strip material layer 6, a lower combustion beam 7, an upper combustion beam 8, a first beam type burner 9, a second beam type burner 10, a high-speed burner 11, a cooling layer 12, a second fan 13, a heat conduction oil assembly 14, a cyclone dust collector 15, an air preheater 16, a gas heat exchanger 17, a bag-type dust collector 18, an induced draft fan 19 and a chimney 20, wherein one side of the gas pressurizing station 1 is connected with the first fan 3 through the pipeline 2, the first fan 3 is connected with the middle of the outer wall of the kiln body 4, the preheating strip material layer 5 is arranged at the bottom of the inner wall of the kiln strip material layer 5, the calcining strip material layer 6 is internally provided with the lower combustion beam 7 at the bottom, the upper combustion beam 8 is arranged above the lower combustion beam 7, the first beam type burners 9 are arranged at both ends of the lower combustion beam 7, the two ends of the upper combustion beam 8 are respectively provided with a second beam burner 10, the first fan 3 is respectively connected with a first beam burner 9 and the second beam burner 10 through a pipeline 2, the lower combustion beam 7 and the upper combustion beam 8 are respectively provided with a high-speed burner 11, and the high-speed burners 11 are respectively provided with 14 sets, so that the positions, which cannot penetrate through materials, of the first beam burner 9 and the second beam burner 10 can be supplemented conveniently; the lower combustion beam 7 and the upper combustion beam 8 are both provided with burner beams, and the upper and lower layers of burner beams are arranged in a # -shape, so that the combustion effect is improved; a cooling layer 12 is arranged at the top of the calcining material-carrying layer 6, a second fan 13 is arranged at one end of the bottom of the kiln body 4, and the first fan 3 and the second fan 13 are both connected with the kiln body 4 through welding, so that the structural stability is improved; the ratio of the air volume and the air pressure supplied by the first fan 3 and the second fan 13 is 3: 7, facilitating the combustion of coal gas; a heat conduction oil component 14 is installed on one side of the kiln body 4, the heat conduction oil component 14 comprises an oil storage tank 21, an electric oil filling pump 22, an expansion tank 23, a centrifugal oil pump 24, a filter 25 and a radiator 26, the oil storage tank 21 is installed on one side of the kiln body 4, the oil storage tank 21 is connected with the expansion tank 23 through the electric oil filling pump 22, a pressure gauge is installed at one end of the top of the expansion tank 23, and a thermometer is installed at the other end of the top of the expansion tank 23, so that the safety of the expansion tank 23; the expansion tank 23 is connected with a filter 25 through a centrifugal oil pump 24, a radiator 26 is installed on one side of the filter 25, the radiator 26 is respectively connected with a lower combustion beam 7 and an upper combustion beam 8 through a pipeline 2, one side of the top of the kiln body 4 is connected with a cyclone dust collector 15 through the pipeline 2, the cyclone dust collector 15 is respectively connected with an air preheater 16 and a gas heat exchanger 17 through the pipeline 2, the air preheater 16 and the gas heat exchanger 17 are connected with a bag-type dust collector 18 through the pipeline 2, and the bag-type dust collector 18 is connected with a chimney 20 through an induced draft fan 19; the coal gas pressurizing station 1 pressurizes coal gas to 20kPa, the coal gas is guided to a calcining material-carrying layer 6 in a kiln body 4 through a pipeline 2, the materials are sufficiently combusted through a first beam type burner 9, a second beam type burner 10 and a high-speed burner 11 on a lower combustion beam 7 and an upper combustion beam 8, a first fan 3 works to generate primary air which is sprayed into the kiln body 4 to form flame with stronger penetrating power by matching with the coal gas, a second fan 13 works to generate secondary air which is blown from the bottom of the kiln body 4 to preheat the preheating material-carrying layer 5, the primary air participates in the combustion process after reaching the calcining material-carrying layer 6, the flue gas which finishes the combustion process in the calcining material-carrying layer 6 further rises to a cooling layer 12, the flue gas and the stone material fully exchange heat with the materials through heat transfer modes of conduction, convection and radiation, the temperature of the flue gas is reduced, the temperature of the stone material is preheated, the flue gas is discharged out of the kiln body 4 through the pipeline 2 and enters a cyclone dust, after 95% of ash is collected, the collected ash enters an air preheater 16 and a coal gas heat exchanger 17 through a pipeline 2 for preheating, then enters a bag-type dust remover 18 through the pipeline 2 for completing secondary purification, and the purified flue gas is discharged through an induced draft fan 19 and a chimney 20 until the dust content is below 30mg/Nm year by weight; by selecting the advanced calcining mode of the first beam type burner 9, the second beam type burner 10 and the high-speed burner 11 to replace the existing mixed calcining mode of coke and limestone, the limestone can be better calcined, the lime product is greatly improved in the aspects of raw over-burning rate, activity and the like, the converter and coke oven gas are used for replacing the coke as fuel, the fuel expenditure can be greatly saved, the waste heat of discharged flue gas is fully recycled, and the amount of the dust discharged from the flue gas is greatly reduced to meet the strict environmental protection requirement.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides an active lime shaft kiln waste gas waste heat recovery utilizes device, including coal gas pressurizing station (1), pipeline (2), first fan (3), the kiln body (4), preheat the belting layer (5), calcine the belting layer (6), lower combustion beam (7), go up combustion beam (8), first beam type nozzle (9), second beam type nozzle (10), high-speed nozzle (11), cooling layer (12), second fan (13), conduction oil subassembly (14), cyclone (15), air heater (16), gas heater (17), sack cleaner (18), draught fan (19) and chimney (20), its characterized in that: one side of the coal gas pressurizing station (1) is connected with a first fan (3) through a pipeline (2), the first fan (3) is connected with the middle of the outer wall of the kiln body (4), a preheating material belt layer (5) is arranged at the bottom of the inner wall of the kiln body (4), a calcining material belt layer (6) is arranged at the top of the preheating material belt layer (5), a lower combustion beam (7) is arranged at the bottom in the calcining material belt layer (6), an upper combustion beam (8) is arranged above the lower combustion beam (7), first beam type burners (9) are arranged at two ends of the lower combustion beam (7), second beam type burners (10) are arranged at two ends of the upper combustion beam (8), the first fan (3) is respectively connected with the first beam type burners (9) and the second beam type burners (10) through the pipeline (2), a cooling layer (12) is arranged at the top of the calcining material belt layer (6), the kiln comprises a kiln body (4), a heat conduction oil component (14) is installed on one side of the kiln body (4), the heat conduction oil component (14) comprises an oil storage tank (21), an electric oil filling pump (22), an expansion tank (23), a centrifugal oil pump (24), a filter (25) and a radiator (26), the oil storage tank (21) is installed on one side of the kiln body (4), the oil storage tank (21) is connected with the expansion tank (23) through the electric oil filling pump (22), the expansion tank (23) is connected with the filter (25) through the centrifugal oil pump (24), the radiator (26) is installed on one side of the filter (25), the radiator (26) is respectively connected with a lower combustion beam (7) and an upper combustion beam (8) through a pipeline (2), one side of the top of the kiln body (4) is connected with a cyclone dust collector (15) through a pipeline (2), the cyclone dust collector (15) is respectively connected with the air preheater (16) and the coal gas heat exchanger (17) through a pipeline (2), the air preheater (16) and the coal gas heat exchanger (17) are connected with the bag-type dust collector (18) through the pipeline (2), and the bag-type dust collector (18) is connected with the chimney (20) through the induced draft fan (19).
2. The waste gas waste heat recycling device of the active lime shaft kiln as claimed in claim 1, characterized in that: and the lower combustion beam (7) and the upper combustion beam (8) are respectively provided with a high-speed burner (11), and the high-speed burners (11) are respectively provided with 14 sleeves.
3. the waste gas waste heat recycling device of the active lime shaft kiln as claimed in claim 1, characterized in that: the lower combustion beam (7) and the upper combustion beam (8) are both provided with burner beams, and the upper and lower layers of burner beams are arranged in a shape like a Chinese character 'jing'.
4. The waste gas waste heat recycling device of the active lime shaft kiln as claimed in claim 1, characterized in that: the first fan (3) and the second fan (13) are both connected with the kiln body (4) through welding.
5. The waste gas waste heat recycling device of the active lime shaft kiln as claimed in claim 1, characterized in that: the first fan (3) and the second fan (13) supply air quantity and air pressure in a ratio of 3: 7.
6. The waste gas waste heat recycling device of the active lime shaft kiln as claimed in claim 1, characterized in that: the pressure gauge is installed to expansion tank (23) top one end, the thermometer is installed to the other end of expansion tank (23) top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822203628.8U CN209783314U (en) | 2018-12-26 | 2018-12-26 | Waste gas and waste heat recycling device for active lime shaft kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822203628.8U CN209783314U (en) | 2018-12-26 | 2018-12-26 | Waste gas and waste heat recycling device for active lime shaft kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209783314U true CN209783314U (en) | 2019-12-13 |
Family
ID=68790816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822203628.8U Expired - Fee Related CN209783314U (en) | 2018-12-26 | 2018-12-26 | Waste gas and waste heat recycling device for active lime shaft kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209783314U (en) |
-
2018
- 2018-12-26 CN CN201822203628.8U patent/CN209783314U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191213 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |