CN114061303B - Carbon calcining rotary kiln middle part fuel supply system - Google Patents
Carbon calcining rotary kiln middle part fuel supply system Download PDFInfo
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- CN114061303B CN114061303B CN202010742677.8A CN202010742677A CN114061303B CN 114061303 B CN114061303 B CN 114061303B CN 202010742677 A CN202010742677 A CN 202010742677A CN 114061303 B CN114061303 B CN 114061303B
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- rotary kiln
- annular
- fuel tank
- rotary
- air
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- 239000000446 fuel Substances 0.000 title claims abstract description 30
- 238000001354 calcination Methods 0.000 title claims abstract description 29
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 17
- 239000002828 fuel tank Substances 0.000 claims abstract description 55
- 239000002737 fuel gas Substances 0.000 claims abstract description 37
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 26
- 239000010959 steel Substances 0.000 claims abstract description 26
- 239000007921 spray Substances 0.000 claims description 17
- 238000009413 insulation Methods 0.000 claims description 7
- 230000001502 supplementing effect Effects 0.000 claims description 7
- 238000007789 sealing Methods 0.000 abstract description 16
- 239000013589 supplement Substances 0.000 abstract 1
- 238000001816 cooling Methods 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000011329 calcined coke Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000002008 calcined petroleum coke Substances 0.000 description 3
- 239000000571 coke Substances 0.000 description 3
- 239000011331 needle coke Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000002006 petroleum coke Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories or equipment specially adapted for rotary-drum furnaces
- F27B7/22—Rotary drums; Supports therefor
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/05—Preparation or purification of carbon not covered by groups C01B32/15, C01B32/20, C01B32/25, C01B32/30
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K5/00—Feeding or distributing other fuel to combustion apparatus
- F23K5/002—Gaseous fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L9/00—Passages or apertures for delivering secondary air for completing combustion of fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories or equipment specially adapted for rotary-drum furnaces
- F27B7/36—Arrangements of air or gas supply devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories or equipment specially adapted for rotary-drum furnaces
- F27B7/38—Arrangements of cooling devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories or equipment specially adapted for rotary-drum furnaces
- F27B7/42—Arrangement of controlling, monitoring, alarm or like devices
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Inorganic Chemistry (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
本发明涉及一种燃料系统，尤其涉及一种炭素煅烧回转窑窑体中部补充燃料系统。包括回转窑筒体，其特征在于回转窑筒体从环形燃料箱中心穿过，在环形燃料箱的窑头侧端面上设有一开口的环形凸起，环形凸起内设有圆环形旋转密封钢板，圆环形旋转密封钢板垂直于回转窑筒体的轴线，在回转窑筒体外壳圆周上布置若干个固定架，每个固定架连接旋转密封钢板与回转窑筒体，环形凸起的凸起部分内壁上下分别与一个环形软密封片一端固定，两个环形软密封片的另一端分别与旋转密封钢板接触密封，在旋转密封钢板上设有出气口，出气口通过燃料气喷管伸到二次风管的出风口处，在燃料气喷管上设有气泵，环形燃料箱窑尾侧端面设在进气口，环形燃料箱内为微负压。
The present invention relates to a fuel system, and in particular to a fuel supplement system for the middle part of a carbon calcining rotary kiln body. The system comprises a rotary kiln body, characterized in that the rotary kiln body passes through the center of an annular fuel tank, an open annular protrusion is provided on the kiln head side end face of the annular fuel tank, a circular annular rotary sealing steel plate is provided inside the annular protrusion, the circular annular rotary sealing steel plate is perpendicular to the axis of the rotary kiln body, a plurality of fixing frames are arranged on the circumference of the rotary kiln body shell, each fixing frame connects the rotary sealing steel plate and the rotary kiln body, the inner wall of the raised part of the annular protrusion is fixed to one end of an annular soft sealing sheet respectively at the upper and lower sides, the other ends of the two annular soft sealing sheets are respectively contacted and sealed with the rotary sealing steel plate, an air outlet is provided on the rotary sealing steel plate, the air outlet extends to the air outlet of the secondary air duct through a fuel gas nozzle, an air pump is provided on the fuel gas nozzle, the kiln tail side end face of the annular fuel tank is provided at the air inlet, and the annular fuel tank is slightly negative pressure.
Description
Technical Field
The invention relates to a fuel system, in particular to a middle supplementary fuel system of a kiln body of a carbon calcination rotary kiln. Belongs to the production equipment of calcined coke for producing anode and cathode for aluminum and graphite electrode for steelmaking in the carbon industry.
Background
Kiln equipment commonly used for calcining raw coke (including oil-based coke and coal-based coke) mainly comprises a pot calciner and a rotary kiln. Compared with a tank calciner, the rotary kiln has the advantages of high productivity, low cost, high automation degree, good working environment and the like. In addition, when the needle coke is calcined, the calcining temperature is required to be higher and generally reaches 1400-1500 ℃, the pot body of the pot calciner is usually made of refractory silica bricks, and the highest using temperature is 1350 ℃, so that the needle coke calcining requirement cannot be met, and therefore, a rotary kiln is also generally adopted for the needle coke calcining.
The traditional carbon calcination rotary kiln is provided with a burner only at the kiln head of the rotary kiln, and is used for supplementing fuel for the rotary kiln when the volatile components in the baking furnace and the calcination raw materials are insufficient. The rotary kiln is divided into a preheating zone, a calcining zone and a cooling zone from the kiln tail to the kiln head, the kiln head of the rotary kiln is positioned at the tail end of the cooling zone, and a combustor arranged at the kiln head of the rotary kiln is used for supplementing fuel for the rotary kiln and heating calcined coke which is calcined completely and is reduced in temperature by the cooling zone again inevitably. The disadvantage of the supplementary fuel at the kiln head is that (1) the burning loss rate of the calcined petroleum coke is increased because the calcined coke is heated for the second time; the high-temperature flue gas generated by the fuel supplied from the kiln head firstly passes through the cooling zone and then passes through the secondary air in the middle of the kiln body, and is not directly acted on the calcining zone, so that the temperature of the calcining zone is not controlled, a large amount of heat is wasted, and energy is wasted, and (3) the temperature of calcined coke entering the subsequent cooling equipment is increased, the load of the subsequent cooling equipment is increased, and the service life of the refractory lining of the cooling equipment is shortened.
Disclosure of Invention
In order to solve the technical problems, the invention provides a carbon calcination rotary kiln body middle part supplementary fuel system, which aims to increase the supply of fuel in the rotary kiln middle part and facilitate the control of the temperature of a calcination zone.
The invention provides a carbon calcination rotary kiln body middle part fuel supplementing system, which comprises a rotary kiln cylinder, wherein a trolley is arranged below the rotary kiln cylinder at a calcination zone section, an annular fuel tank is arranged on the trolley, the rotary kiln cylinder penetrates through the center of the annular fuel tank, an annular bulge with an opening is arranged on the kiln head side end face of the annular fuel tank, a circular rotary seal steel plate is arranged in the annular bulge, a plurality of fixing frames are arranged on the circumference of a rotary kiln cylinder shell, each fixing frame is connected with the rotary seal steel plate and the rotary kiln cylinder, the upper and lower parts of the inner wall of the bulge part of the annular bulge are respectively fixed with one end of an annular soft seal piece, the other ends of the two annular soft seal pieces are respectively in contact seal with the rotary seal steel plate, an air outlet is arranged on the rotary seal steel plate, the air outlet extends to an air outlet of a secondary air pipe through a fuel gas spray pipe, an air pump is arranged on the fuel gas spray pipe, an air inlet is arranged on the kiln tail end face of the annular fuel tank, and micro negative pressure is arranged in the annular fuel tank.
The trolley is arranged on the guide rail, the guide rail is positioned on the platform, the annular fuel tank is perpendicular to the axis of the rotary kiln cylinder, and the trolley moves in a stringing way along the axis direction of the rotary kiln cylinder.
The air inlet is connected with the fuel gas flow controller through an air inlet pipeline, a first electromagnetic stop valve is arranged on the air inlet pipeline, the air inlet pipeline, the fuel gas flow controller and the first electromagnetic stop valve are arranged at the lower part of the annular fuel tank, a compressed air pipeline is arranged at the lower part of the annular fuel tank, and a fourth electromagnetic stop valve is arranged on the compressed air pipeline.
The air pump is fixed on the rotary kiln shell, and the fuel gas spray pipe, the air pump and the second electromagnetic stop valve rotate along with the rotary kiln barrel.
The upper part of the annular fuel tank is provided with a pressure measuring device, and the top of the annular fuel tank is provided with a third electromagnetic stop valve and a diffusing pipe.
Each fixing frame is in a right angle shape.
A heat insulation plate is arranged between the outer wall of the inner ring of the annular fuel tank and the rotary kiln cylinder body, heat insulation plate and annular fuel tank inner ring the outer walls are connected through lacing wires.
And a slip ring power supply system is arranged on the shell at the kiln tail side of the rotary kiln barrel, and the slip ring power supply system supplies power to the variable frequency motor of the air pump and the second electromagnetic stop valve.
The negative pressure in the annular fuel tank is-5 Pa to-15 Pa.
The guide rail is consistent with the inclination of the rotary kiln cylinder, and the annular fuel tank is perpendicular to the axis of the rotary kiln cylinder.
The shell of the rotary kiln cylinder is provided with a secondary air main pipe, the secondary air pipe is led out from the secondary air main pipe and inserted into the rotary kiln cylinder, and the fuel gas spray pipe is inserted into the secondary air main pipe and then extends into the rotary kiln cylinder from a secondary air pipe.
The invention has the advantages that the secondary heating of the calcined petroleum coke passing through the cooling belt of the rotary kiln in the production process is avoided, the carbon burning loss rate of the petroleum coke is reduced, the supplementary fuel in the production process directly acts on the calcining belt, the temperature control of the calcining belt is facilitated, the energy is saved, the temperature of the calcined petroleum coke entering into the subsequent cooling equipment is reduced, the load of the subsequent cooling equipment is reduced, the service life of the refractory lining of the cooling equipment is prolonged, the total smoke volume of the rotary kiln is reduced, and the load of the subsequent smoke treatment system of the calcining system is reduced.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Figure 2 is a section A-A of figure 1.
Fig. 3 is an enlarged view of fig. 1 at I.
Fig. 4 is a schematic view of the gap between the rotary seal steel plate and the annular projection.
The device comprises a rotary kiln cylinder body 1, a trolley 2, a ring-shaped fuel tank 3, a ring-shaped bulge 4, a rotary sealing steel plate 5, a fixing frame 6, a ring-shaped soft sealing piece 7, a fuel gas spray pipe 8, a secondary air pipe 9, a gas pump 10, a guide rail 11, a gas inlet pipeline 12, a fuel gas flow controller 13, a fuel gas flow controller 14, a first electromagnetic stop valve 15, a second electromagnetic stop valve 16, a pressure measuring device 17, a third electromagnetic stop valve 18, a diffusing pipe 19, a heat insulation plate 20, a lacing wire 21, a slip ring power supply system 22, a secondary air main pipe 23, a fourth electromagnetic stop valve 24, a compressed air pipeline 25 and a gap.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in the figure, the middle part of the kiln body of the carbon calcination rotary kiln provided by the invention is provided with a trolley 2 below the rotary kiln cylinder 1 positioned at the calcination zone section, an annular fuel tank 3 is arranged on the trolley 2, the rotary kiln cylinder 1 penetrates through the center of the annular fuel tank 3, an annular bulge 4 with an opening is arranged on the kiln head side end face of the annular fuel tank 3, a circular annular rotary seal steel plate 5 is arranged in the annular bulge 4, a plurality of fixing frames 6 are arranged on the circumference of the shell of the rotary kiln cylinder 1, each fixing frame 6 is connected with the rotary seal steel plate 5 and the rotary kiln cylinder 1, the upper and lower parts of the inner wall of the bulge part of the annular bulge 4 are respectively fixed with one end of an annular soft seal piece 7, the other ends of the two annular soft seal pieces 7 are respectively in contact seal with the rotary seal steel plate 5, the annular soft seal pieces 7 are elastic pieces, an air outlet is arranged on the rotary seal steel plate 5, the air outlet extends to the air outlet of a secondary air pipe 9 through a fuel gas spray pipe 8, an air pump 10 is arranged on the fuel gas spray pipe 8, an air inlet is arranged on the tail side end face of the annular fuel tank 3, and micro negative pressure is arranged in the annular fuel tank 3. A gap 25 is arranged between the rotary sealing steel plate 5 and the protruding bottom of the annular protruding part 4, and the gap 25 ensures that the rotary sealing steel plate can smoothly rotate along with the rotary kiln cylinder 1.
The trolley 2 is arranged on a guide rail 11, the guide rail 11 is positioned on a platform, the annular fuel tank 3 is perpendicular to the axis of the rotary kiln cylinder 1, and the trolley 2 moves in series along the axis direction of the rotary kiln cylinder 1.
The air inlet is connected with the fuel gas flow controller 13 through the air inlet pipeline 12, the air inlet pipeline 12 is provided with a first electromagnetic stop valve 14, the air inlet pipeline 12, the fuel gas flow controller 13 and the first electromagnetic stop valve 14 are arranged at the lower part of the annular fuel tank 3, the lower part of the annular fuel tank 3 is provided with a compressed air pipeline 24, and the compressed air pipeline 24 is provided with a fourth electromagnetic stop valve 23.
The outlet side of the air pump 10 on the fuel gas spray pipe 8 is provided with a second electromagnetic stop valve 15, the air pump 10 is fixed on the rotary kiln shell 1, and the fuel gas spray pipe 8, the air pump 10 and the second electromagnetic stop valve 15 rotate along with the rotary kiln shell 1.
The upper part of the annular fuel tank 3 is provided with a pressure measuring device 16, and the top of the annular fuel tank 3 is provided with a third electromagnetic stop valve 17 and a diffusing pipe 18.
Each fixing frame 6 is in a right angle shape, one right angle side is inserted and fixed at the outer side of the rotary sealing steel plate 5 from the opening part which protrudes, the other right angle side is fixed on the rotary kiln cylinder 1, and the fuel gas spray pipe 8 is arranged at the outer side of the fixing frame 6.
The heat insulation plate 19 is arranged between the outer wall of the inner ring of the annular fuel tank 3 and the rotary kiln cylinder 1, and the heat insulation plate 19 is connected with the outer wall of the inner ring of the annular fuel tank 3 through a lacing wire 20.
The shell at the kiln tail side of the rotary kiln barrel 1 is provided with a slip ring power supply system 21, and the slip ring power supply system 21 supplies power to the variable frequency motor of the air pump 10 and the second electromagnetic stop valve 15.
The negative pressure in the annular fuel tank 3 is-5 Pa to-15 Pa.
The guide rail 11 is consistent with the inclination of the rotary kiln cylinder 1, and the annular fuel tank 3 is perpendicular to the axis of the rotary kiln cylinder 1.
The shell of the rotary kiln barrel 1 is provided with a secondary air main pipe 22, a secondary air pipe 9 is led out from the secondary air main pipe 22 and inserted into the rotary kiln barrel 1, and a fuel gas spray pipe 8 is inserted into the secondary air main pipe 22 and then extends into the rotary kiln barrel 1 from a secondary air pipe 9. The secondary air main pipe 22 is arranged in the middle of the rotary kiln body.
The invention adds a set of supplementary fuel system at the position of the middle part of the rotary kiln body near the secondary air pipe at the kiln tail side. When the rotary kiln is started immediately after the furnace is baked or stopped, the original burner on the kiln head cover of the rotary kiln is used for providing fuel for the rotary kiln. Because the temperature in the kiln is lower at this time, the invention is used for supplementing fuel for the rotary kiln, the fuel cannot be combusted immediately after entering the rotary kiln, and the fuel gas is accumulated in the rotary kiln and is easy to deflagrate. When the temperature in the rotary kiln is higher than the ignition temperature of the fuel gas, the fuel gas can be automatically combusted immediately after entering the rotary kiln, the fuel supply quantity of the burner can be gradually reduced, and the fuel supply is carried out by using a supplementary fuel system in the middle of the kiln body, so that the fuel is stably transited to normal production.
During normal production of the rotary kiln, the amount of fuel entering the annular fuel tank 3 is controlled by the fuel gas flow controller 13 according to production requirements. The gas quantity injected into the rotary kiln cylinder 1 by the gas pump 10 is controlled in a linkage manner according to the pressure value measured by the pressure measuring device 16, so that the pressure value obtained by the pressure measuring device 16 is slightly negative pressure and is kept at about-5 Pa to-15 Pa, and the annular soft sealing piece 7 is pressed against the rotary sealing steel plate 5 to seal the annular fuel tank 3, so that the fuel gas in the annular fuel tank 3 is prevented from leaking.
When the rotary kiln system is abnormal and fuel gas supply is required to be stopped, the operation of the air pump 10 is stopped immediately, the first electromagnetic stop valve 14 and the second electromagnetic stop valve 15 are closed to stop fuel gas supply to the annular fuel tank 3 and the rotary kiln, then the fourth electromagnetic stop valve 23 is opened to enable compressed air to enter the annular fuel tank 3 through the fourth electromagnetic stop valve 23, and the fuel gas in the annular fuel tank 3 is discharged into the atmosphere through the discharge pipe 18 through the third electromagnetic stop valve 17 so as to prevent the fuel gas in the annular fuel tank 3 from knocking.
When the rotary kiln works, the rotary kiln cylinder rotates to drive the secondary air main pipe, the secondary air pipe, the air pump, the second electromagnetic stop valve, the fuel gas spray pipe, the fixing frame and the rotary sealing steel plate to rotate. The trolley drives the annular fuel tank, the annular bulge, the annular soft sealing piece, the air inlet pipeline, the fuel gas flow controller, the first electromagnetic stop valve, the pressure measuring device, the third electromagnetic stop valve, the diffusing pipe, the heat insulating plate, the lacing wire, the fourth electromagnetic stop valve and the compressed air pipeline to move in tandem on the guide rail along the axial direction of the rotary kiln cylinder.
Claims (7)
1. The middle part of the kiln body of the carbon calcination rotary kiln is supplemented with the fuel system, including the rotary kiln barrel, characterized by that, the rotary kiln barrel is passed from the centre of the annular fuel tank, there is an annular bulge of opening on the kiln head side end surface of the annular fuel tank, there are circular annular rotary seal steel plates in the annular bulge, the circular annular rotary seal steel plate is perpendicular to axis of the rotary kiln barrel, arrange several fixing frames on the circumference of shell of the rotary kiln barrel, every fixing frame connects rotary seal steel plate and rotary kiln barrel, the protruding part inner wall of annular bulge is fixed with one end of an annular soft seal piece up and down separately, another end of two annular soft seal pieces contacts and seals with rotary seal steel plate separately, there are air outlets on the rotary seal steel plate, the air outlet stretches to the air outlet of the secondary air duct through the fuel gas spray pipe, there are air pumps on the fuel gas spray pipe, there are air inlets on the end surface of kiln tail side of the annular fuel tank, there are micro negative pressures in the annular fuel tank; the annular fuel tank is arranged on a trolley below the rotary kiln cylinder, the trolley is arranged on a guide rail, the guide rail is arranged on a platform, the inclination of the guide rail is parallel to the axis of the rotary kiln cylinder, the annular fuel tank is perpendicular to the axis of the rotary kiln cylinder, the trolley drives the annular fuel tank to move along the axis direction of the rotary kiln cylinder along with the annular rotary seal steel plate in a stringing way, a secondary air main pipe is arranged on the shell of the rotary kiln cylinder, a secondary air pipe is led out from the secondary air main pipe and is inserted into the rotary kiln cylinder, and a fuel gas spray pipe is inserted into the secondary air main pipe and then extends into the rotary kiln cylinder from a secondary air pipe.
2. The middle supplementary fuel system for the kiln body of the carbon calcination rotary kiln according to claim 1, wherein the air inlet is connected with the fuel gas flow controller through an air inlet pipeline, a first electromagnetic stop valve is arranged on the air inlet pipeline, the air inlet pipeline, the fuel gas flow controller and the first electromagnetic stop valve are arranged at the lower part of the annular fuel tank, a compressed air pipeline is arranged at the lower part of the annular fuel tank, and a fourth electromagnetic stop valve is arranged on the compressed air pipeline.
3. The system for supplementing fuel to the middle of a kiln body of a carbon calcination rotary kiln according to claim 1, wherein the outlet side of the air pump on the fuel gas spray pipe is provided with a second electromagnetic stop valve, the air pump is fixed on the rotary kiln shell, and the fuel gas spray pipe, the air pump and the second electromagnetic stop valve rotate along with the rotary kiln cylinder.
4. The middle supplementary fuel system for the kiln body of the carbon calcination rotary kiln according to claim 1, wherein the upper part of the annular fuel tank is provided with a pressure measuring device, and the top of the annular fuel tank is provided with a third electromagnetic stop valve and a diffusing pipe.
5. The fuel supplementing system for the middle part of the kiln body of the carbon calcination rotary kiln according to claim 1, wherein the fixing frame is in a right angle shape, and the negative pressure in the annular fuel tank is between-5 Pa and-15 Pa.
6. The fuel supplementing system for the middle part of the kiln body of the carbon calcination rotary kiln according to claim 1 or 4, wherein a heat insulation plate is arranged between the outer wall of the inner ring of the annular fuel tank and the rotary kiln cylinder, and the heat insulation plate is connected with the outer wall of the inner ring of the annular fuel tank through lacing wires.
7. The middle supplementary fuel system for the kiln body of the carbon calcination rotary kiln of claim 3, wherein a slip ring power supply system is arranged on the shell at the kiln tail side of the rotary kiln cylinder body, and the slip ring power supply system supplies power to the variable frequency motor and the second electromagnetic stop valve of the air pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010742677.8A CN114061303B (en) | 2020-07-29 | 2020-07-29 | Carbon calcining rotary kiln middle part fuel supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010742677.8A CN114061303B (en) | 2020-07-29 | 2020-07-29 | Carbon calcining rotary kiln middle part fuel supply system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114061303A CN114061303A (en) | 2022-02-18 |
| CN114061303B true CN114061303B (en) | 2025-03-07 |
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| CN202010742677.8A Active CN114061303B (en) | 2020-07-29 | 2020-07-29 | Carbon calcining rotary kiln middle part fuel supply system |
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| CN116202318B (en) * | 2023-03-23 | 2024-02-06 | 连云港临海新材料有限公司 | Intelligent temperature adjusting device and method for petroleum coke calciner |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212720801U (en) * | 2020-07-29 | 2021-03-16 | 沈阳创联工业技术有限公司 | Fuel supplementing system in middle of kiln body of carbon calcination rotary kiln |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5549058A (en) * | 1995-04-10 | 1996-08-27 | Cadence Environmental Energy, Inc. | Method and apparatus for charging a bulk material supplemental fuel into a long cement kiln |
| US5724896A (en) * | 1996-03-20 | 1998-03-10 | Koenig; Larry E. | Method and apparatus for providing supplemental fuel to a rotary kiln |
| JP4330226B2 (en) * | 1999-10-18 | 2009-09-16 | 住友大阪セメント株式会社 | Fuel combustion apparatus and method for cement rotary kiln |
| US6672865B2 (en) * | 2000-09-11 | 2004-01-06 | Cadence Enviromental Energy, Inc. | Method of mixing high temperature gases in mineral processing kilns |
| CN104792154B (en) * | 2015-04-03 | 2017-01-25 | 石家庄新华能源环保科技股份有限公司 | A partition type rotary kiln device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212720801U (en) * | 2020-07-29 | 2021-03-16 | 沈阳创联工业技术有限公司 | Fuel supplementing system in middle of kiln body of carbon calcination rotary kiln |
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| Publication number | Publication date |
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| CN114061303A (en) | 2022-02-18 |
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