CN201634586U - Pure lime calcining furnace - Google Patents
Pure lime calcining furnace Download PDFInfo
- Publication number
- CN201634586U CN201634586U CN2010203026072U CN201020302607U CN201634586U CN 201634586 U CN201634586 U CN 201634586U CN 2010203026072 U CN2010203026072 U CN 2010203026072U CN 201020302607 U CN201020302607 U CN 201020302607U CN 201634586 U CN201634586 U CN 201634586U
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- China
- Prior art keywords
- calcining
- heater
- burner hearth
- pure lime
- furnace
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- 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 - Lifetime
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- 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
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/40—Production or processing of lime, e.g. limestone regeneration of lime in pulp and sugar mills
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- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
The utility model discloses a calcining furnace used for producing pure lime, aims at overcoming the defect of poor lime quality in the prior art, and provides a calcining furnace which can ensure the lime product to achieve high quality. The calcining furnace comprises a furnace body, wherein the lower bottom surface of the furnace body is a bottom part provided with a grate bar; a support seat is arranged below the bottom part of the furnace body; the interior of the support seat is communicated with the outside world; the interior of the furnace body is a hearth for fuel combustion; the side surface of the lower end part of the furnace body is provided with a slag hole; and the upper end part of the furnace body is provided with a chimney communicated with the hearth. The furnace is characterized in that the central part of the hearth is vertically provided with a calcining cylinder used for calcining raw material; the upper end of the hearth is provided with an upper cover; the lower end of the calcining cylinder is provided with an ash outlet; and the calcining cylinder is made of heat-resisting steel plates. The combustion heat of the pure lime calcining furnace is transmitted to the raw material through the cylinder body of the calcining cylinder, the raw material can be ensured to be separated from the fuel and smoke, and also can be ensured not to be polluted in the calcining process.
Description
Technical field
The utility model relates to a kind of limestone kiln, specifically relates to a kind of calcining furnace of producing pure lime.
Background technology
Lime is that its main component is calcium oxide (CaO) at the industrial raw material of industry widespread uses such as building, metallurgy, oil, chemical industry, pharmacy, food, electronics.The production of lime is mainly at high temperature calcined and is got by Wingdale, and calcining furnace commonly used has earth kiln, mechanical shaft furnace, fluidizing furnace, converter etc.All with Wingdale and fuel mix burning, separate the fuel lime-ash at last and obtain bulk or powdered lime finished product when above stove is calcined, the lime impurity that aforesaid method is produced is more, only is applicable to industries such as building.The development of electronic industry has in recent years proposed requirement of high purity to lime quality, wherein requires sulphate content to be lower than 3/10000ths, and Mg content is lower than 2/10000ths, iron level≤40ppm, and existing method for calcinating can not reach so high requirement of electron trade.Reform scheme such as China Patent No. ZL200520022535.5 patent proposed: a kind of closed energy-saving limestone kiln, it is characterized in that fiery storehouse is a rectangular parallelepiped, in fiery storehouse, be provided with arch at least four, the hollow cone cylinder of top, fire storehouse is that little upper end, lower end is big, awl cylinder top has sealing cover, sealing cover to be provided with feeding mouth and a plurality of venthole.This limestone kiln, Jiang Huocang is located at the hollow cone cylinder below of placing raw material, though Wingdale raw material and fuel are separated, but can't accomplish real isolation, the flue dust of the fuel former feed bin of still flowing through pollutes product during calcining, has reduced the quality of product.
Summary of the invention
The utility model technical issues that need to address are, overcome the defective of the smoke pollution raw material of fuel and fuel combustion, provide a kind of, be not subjected to the pollution of fuel and flue gas thereof, make lime product reach high-quality requirement to guarantee raw material and finished product with fuel and the complete isolated lime calcining stove of raw material.
The purpose of this utility model is achieved by following technical proposals: a kind of pure lime calcining stove, comprise body of heater, the bottom surface of body of heater is the bottom that is provided with grate, be provided with supporting seat below the bottom of furnace body, the inside of supporting seat is connected with the external world, the inside of body of heater is the burner hearth of fuel combustion, the side, bottom of body of heater is provided with slag notch, the upper end of body of heater is provided with the chimney that is communicated with burner hearth, the utility model vertically is provided for the calcining tube of calcining raw materials at the central part of burner hearth, upper end at burner hearth is provided with loam cake, lower end at the calcining tube is provided with ash output hole, and described calcining tube is that heat-resisting steel sheet and plate is made.
Raising loam cake can add fuel in burner hearth, fresh air enters burner hearth by grate, and the flue gas that burning is emitted is discharged by the chimney of body of heater upper end, and slag is discharged by slag notch; The fuel combustion liberated heat conducts to the Wingdale raw material through the cylindrical shell of calcining tube, and the lime product that calcining obtains is taken out from the ash output hole of calcining tube bottom.Because flue gas can guarantee that without the calcining tube of calcining raw materials raw material is not subjected to the pollution of flue gas and dirt powder; The calcining tube of body of heater and calcining raw materials is vertical structure, and raw material adds from the top of calcining tube, discharges from the bottom behind the calcine; In the centre of calcining tube, prepared using gravity falls naturally, but so continuous production.
As preferably, the top end face of described burner hearth is lower than the top end face of calcining tube, can prevent when adding fuel that therefore foreign material from falling into the calcining tube.
As preferably, described calcining tube be columnar structured, columnar structured intensity height, and cylinder interior is convenient to clean.
As preferably, described burner hearth is that section is the columnar structure of annular, and this structure is convenient to evenly add fuel, and burner hearth surrounds the calcining tube, helps improving a calcining tube temperature inside.
As preferably, be symmetrical arranged two chimneys that are communicated with burner hearth in the body of heater upper end, the flue dust that burning is emitted is divided into two-way discharges from the two stacks of two opposite side, helps burning evenly.
Described body of heater can directly utilize ground as supporting seat, below the body of heater base plate, be built into the kiln hole toward mine working one hole, the tiny slag that falls from grate is cleaned away in the kiln hole, and the limit in kiln hole is provided with gas blower, can blow in burner hearth by grate in case of necessity.This ground that utilizes is cost-saved and firm as the structure of supporting seat.
Described body of heater also can constitute supporting seat with metal pipe frame, simultaneously at ash damper of the middle part of supporting seat welding.This structure helps the place is shifted in the whole carrying of calcining furnace.
As preferably, the lower surface of calcining tube is lower than at least 0.5 meter of the bottom surface of body of heater, can make calcining tube bottom keep enough temperature.
Described ash output hole can be the oral area of calcining tube lower end.
As preferably, described ash output hole is to be located at and the another port of calcining one section ash discharge pipeline that a lower end is connected mutually, and lime by taking out from ash output hole, can avoid being subjected to the pollution of the ashes that fall from grate or slag notch again from the ash discharge pipeline that is isolated from the outside.
The beneficial effects of the utility model are: the calcining tube of calcining raw materials and the burner hearth of fuel combustion are isolated mutually, and the flue gas of fuel combustion is without the calcining tube, and heat conducts to raw material through the cylindrical shell of calcining tube, can guarantee that raw material is not contaminated in the incinerating process.
Produce through described pure lime calcining stove is tried out, and detect the product of multiple batches of production, detected result is:
The content of main component calcium oxide (CaO) is all above 97%;
Foreign matter content is: iron level all is less than 0.00026%; Sulphate content all is less than 0.016%; Mg content all is less than 0.012%.
Description of drawings
Fig. 1 is the structural representation of a kind of embodiment of the utility model;
Fig. 2 is the A-A diagrammatic cross-section of Fig. 1;
Fig. 3 is the diagrammatic cross-section of the another kind of embodiment of the utility model;
Fig. 4 is the structural representation of another embodiment of the utility model.
Embodiment
Below in conjunction with accompanying drawing and specific embodiments the utility model is further described.
Embodiment 1: as shown in Figure 1, a kind of pure lime calcining stove, comprise that the body of heater 1 that is built into refractory brick, the bottom surface of body of heater are the base plate 2 that is provided with grate 6, the following of base plate 2 is supporting seat with ground, the inside of body of heater is the burner hearth 11 of fuel combustion, is provided with symmetric two place's slag notches 3 in the side, bottom of body of heater, and slag notch is provided with fire door, the two sides of body of heater upper end are arranged with two chimneys that are communicated with burner hearth 4, and the height of chimney is more than 2 meters; Vertically be provided for the calcining tube 5 of calcining raw materials at the central part of burner hearth 11, the bottom surface that the lower surface of calcining tube is lower than body of heater is 1 meter apart from a, be provided with loam cake 12 in the upper end of burner hearth, lower end at calcining tube 5 is connected one section ash discharge pipeline 10, the other end of pipeline 10 is an ash output hole 9, be built into kiln hole 13 toward mine working one hole below bottom of furnace body, described calcining tube 5 is made for the heat-resisting steel sheet and plate of model SUS314.
As shown in Figure 2, calcining tube 5 is a circular configuration, and burner hearth 11 is a cirque structure.
Raising loam cake 12 can add fuel in burner hearth 11, fresh air enters burner hearth by grate 6, and the flue gas that burning is emitted is discharged by the chimney 4 of body of heater upper end, and slag is discharged by slag notch 3; The fuel combustion liberated heat conducts to the Wingdale raw material through the cylindrical shell of calcining tube 5, and the lime product that calcining obtains is taken out from the ash output hole 9 of calcining tube bottom.
Embodiment 2: change the section structure shape of the calcining tube among the embodiment 1 into cross tooth-shape structure 51, the width of cross tooth portion equates, the advantage of this structure is that heat does not exist thick especially position from calcining cylindrical shell outside substantially to the distance of cross tooth-shape structure conducted inside, can improve the uniformity coefficient that material is heated, making the calcinating speed equilibrium, is transition arc 52 between the cross tooth portion; Simultaneously the section structure shape of body of heater among the embodiment 1 and burner hearth is changed into square, as shown in Figure 3.
Embodiment 3: as shown in Figure 4, below body of heater 1, be provided with base plate 2, be provided with grate in the middle of the base plate 2, use below the base plate 2 by 8 welding of four metal tubes and constitute supporting seat, the lower end of metal tube 8 is provided with the feet dish, the lower end of calcining tube is connected interface diameter and the identical ash discharge pipeline 10 of calcining tube diameter, and the lower end of ash discharge pipeline is provided with ash output hole 9, and the waist of supporting seat is provided with the ash damper 7 that can block ashes.
The utility model raw material chamber and heating chamber are isolated mutually, the flue gas of fuel combustion is without the raw material chamber, and heat conducts to raw material limestone through the cavity in raw material chamber, can guarantee that raw material is not contaminated, and obtain high-quality finished product lime, especially be fit to calcining high quality lime product.
Claims (9)
1. pure lime calcining stove, comprise body of heater (1), the bottom surface of body of heater is for being provided with the base plate (2) of grate (6), be provided with supporting seat below the body of heater base plate, the inside of supporting seat is connected with the external world, the inside of body of heater is the burner hearth (11) of fuel combustion, the side, bottom of body of heater is provided with slag notch (3), the upper end of body of heater is provided with the chimney (4) that is communicated with burner hearth, it is characterized in that, vertically be provided for the calcining tube (5) of calcining raw materials at the central part of burner hearth, be provided with loam cake (12) in the upper end of burner hearth, be provided with ash output hole (9) in the lower end of calcining tube, described calcining tube is made for heat-resisting steel sheet and plate.
2. pure lime calcining stove according to claim 1 is characterized in that, the top end face of described burner hearth is lower than the top end face of calcining tube.
3. pure lime calcining stove according to claim 1 and 2 is characterized in that, described calcining tube is columnar structured.
4. pure lime calcining stove according to claim 1 and 2 is characterized in that, described burner hearth is that section is the columnar structure of annular.
5. pure lime calcining stove according to claim 1 and 2 is characterized in that, is symmetrical arranged two chimneys that are communicated with burner hearth in the body of heater upper end.
6. pure lime calcining stove according to claim 5 is characterized in that described body of heater directly utilizes ground as supporting seat.
7. pure lime calcining stove according to claim 5 is characterized in that, described bottom of furnace body is provided with the supporting seat that constitutes with metal pipe frame, is welded with an ash damper at the middle part of supporting seat.
8. pure lime calcining stove according to claim 1 and 2 is characterized in that, the lower surface of calcining tube is lower than at least 0.5 meter of the bottom surface of body of heater.
9. pure lime calcining stove according to claim 1 and 2 is characterized in that, is provided with in a calcining tube lower end and calcines one section ash discharge pipeline (10) that a lower port is connected mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010203026072U CN201634586U (en) | 2010-02-08 | 2010-02-08 | Pure lime calcining furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010203026072U CN201634586U (en) | 2010-02-08 | 2010-02-08 | Pure lime calcining furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201634586U true CN201634586U (en) | 2010-11-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010203026072U Expired - Lifetime CN201634586U (en) | 2010-02-08 | 2010-02-08 | Pure lime calcining furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201634586U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115784641A (en) * | 2022-12-05 | 2023-03-14 | 宣城新威华化工科技有限公司 | Production process and production device for improving quality of active calcium oxide |
-
2010
- 2010-02-08 CN CN2010203026072U patent/CN201634586U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115784641A (en) * | 2022-12-05 | 2023-03-14 | 宣城新威华化工科技有限公司 | Production process and production device for improving quality of active calcium oxide |
| CN115784641B (en) * | 2022-12-05 | 2024-03-19 | 宣城新威华化工科技有限公司 | Production process and production device for improving quality of active calcium oxide |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHEJIANG TIANSHI NANOTECHNOLOGY CO., LTD. Free format text: FORMER NAME: TIANSHI CALCIUM CARBONATE CO., LTD., JIANDE CITY |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 311607, Zhejiang province Jiande foreign Creek Street foreign Village Patentee after: TIANSHI CALCIUM CARBONATE CO., LTD. Address before: 311607, Zhejiang province Jiande foreign Creek Street foreign Village Patentee before: Jiande Tianshi Calcium Carbonate Co., Ltd. |
|
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 311606, Zhejiang Province, Jiande City, the next town, the next village on the Village Creek natural village Patentee after: TIANSHI CALCIUM CARBONATE CO., LTD. Address before: 311607, Zhejiang province Jiande foreign Creek Street foreign Village Patentee before: TIANSHI CALCIUM CARBONATE CO., LTD. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101117 |