CN101307986A - Industrial kiln - Google Patents
Industrial kiln Download PDFInfo
- Publication number
- CN101307986A CN101307986A CNA2008100553714A CN200810055371A CN101307986A CN 101307986 A CN101307986 A CN 101307986A CN A2008100553714 A CNA2008100553714 A CN A2008100553714A CN 200810055371 A CN200810055371 A CN 200810055371A CN 101307986 A CN101307986 A CN 101307986A
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- air
- kiln
- air feed
- feed beam
- industrial stoves
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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
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention relates to an industrial kiln, comprising a kiln body, a feed device and a discharge device, wherein the kiln body is divided into a preheating section, a reaction section, a cooling section and a discharge port. The reaction section of the kiln is provided with an air supply beam; the air supply beam is connected with an air line and smoke gas; the lower part of the kiln is provided with a flashback tank; the upper part of the preheating section is provided with a smoke gas collector; and the cooling section is provided with an extraction beam. The oxygen concentration of air entering the reaction section is controlled by adjusting the amount of the smoke gas, thereby achieving the aim of controlling the temperature and avoiding the overburning or sintering of materials caused by excess oxygen; the air supply beam supplies air and the air is distributed evenly, so that the roasting effect is improved and the quality of a product is good; the discharge port is provided with the flashback tank, which is not only used to seal the bottom of the kiln, but also take out the heat for cooling the product and facilitate discharge; and the cooling section is provided with the extraction beam which can timely extract vapor and other waste gas, thereby avoiding the interfere of gas of the lower part on the reaction section.
Description
Technical field
The present invention relates to a kind of Industrial Stoves, particularly relate to a kind of Industrial Stoves that are used for burning carbon dressing metal pelletizing or nonmetal pelletizing.
Background technology
The refining of more industrial metals such as the refining of sponge iron need be pulverized ore and be made pelletizing, form the dressing ball at the outside bag of pelletizing one deck carbon dust protective layer, the dressing ball is put into the kiln roasting reduction become metal.Publication number is that the Chinese invention patent application of CN1439859A discloses a kind of " roasting system that is used for roasting dressing ball ", form by blower fan, heat exchanger, pressure regulator and body of heater, body of heater mainly is made up of last sealing gland section, following sealing gland section, changeover portion and roasting oxidation section, hot blast enters body of heater by the hot blast ventilation terminal from the bottom, cold wind enters the roasting oxidation section from middle part cold wind ventilation terminal, material by roasting enters body of heater from top, enters the roasting oxidation section and carries out the roasting oxidation reaction.This patent application has solved to by the problem of roasting material oxygen supply, but the wind that enters the roasting oxidation section can only be the air of fixed oxygen concentration, can not regulate oxygen concentration as required, causes easily by burning of roasting material or sintering.
The applicant's publication number is that the application for a patent for invention of CN101093138A discloses a kind of " reaction chamber type vertical kiln that has air supply chamber ", be provided with storing section, conversion zone and finished product section in the kiln body, be respectively equipped with outside air supply chamber and middle part air supply chamber in the inwall of described conversion zone and the kiln body, between outside air supply chamber and middle part air supply chamber, constitute reative cell, air supply chamber and adjacent reative cell inner surface are distributed with blow vent, by blow vent to the reative cell bubbling air.The shaft furnace that this patent application provides has kept good material gas permeability, and the interior material of external air and reative cell is well mixed.But this invention technology can not be according to the needs of reaction by different oxygen concentrations segmentation air feed, and satisfying the requirement of metal pelletizing reduction, and the air supply chamber of conversion zone and reaction chamber structure hindered material and flow downward, and normal the appearance builds bridge and sintering phenomenon.
Summary of the invention
For overcoming the defective of above-mentioned prior art, the invention provides a kind of Industrial Stoves, can utilize low oxygen concentration wind to regulate the oxygen concentration of air feed according to by the actual needs of roasting material reaction, to reach the purpose of control reaction temperature.
Industrial Stoves of the present invention include: kiln body, feeding device, drawing mechanism.Be divided into preheating section, conversion zone, cooling section and discharging opening in the kiln body, kiln has exhanst gas outlet.The conversion zone of kiln is provided with air-intake device, and described air-intake device is connected with low oxygen concentration wind line with air line.Flue gas or nitrogen that described low oxygen concentration wind is kiln, or other oxygen concentration is lower than 15% gas.
As preferably, low oxygen concentration wind line of the present invention is the flue gas line of kiln, and described air-intake device is connected with the flue gas line with air line by blower fan.Air line and flue gas line are connected the inlet of blower fan, regulate the oxygen concentration of air feed with exhaust gas volumn.
Described air-intake device is the air feed beam, and the conversion zone of kiln is provided with at least one row's air feed beam, at least one air feed beam of every row, and the air feed beam is provided with air outlet; Described air feed beam is tubular body or box-shaped body, does not get rid of the air feed beam of other structure; The cross section of air feed beam is circular, rectangle, and rhombus or ellipse are not got rid of other shape and structure.Air outlet on every air feed beam is single row or multiple rows, the air outlet opening down, with the angle of vertical line be 0～90 °, the quantity of air outlet and aperture area are determined according to the size and the needs of kiln.For preventing that high temperature burns out the air feed beam in the kiln, the air feed beam is established the cavity of cooling medium circulation, and the cooling medium that uses is water or conduction oil.
Conversion zone of the present invention is provided with 1～10 row's air feed beam, 1～10 air feed beam of every row, concrete quantity is looked the size and the machining load of kiln and is determined that the alternate discharging of upper and lower row's air feed beam makes a row air feed beam be in the centre position that next arranges two air feed beams.
Be provided with the flue gas gatherer on kiln top, the flue gas gatherer is connected with smoke duster through exhanst gas outlet.Described fan outlet tube line is provided with the determination of oxygen content instrument or/and the gas sample mouth is used for detecting the oxygen concentration that enters air feed beam gas.
The bottom discharging opening of described kiln is provided with flashback tank, is used for sealing of kiln discharging opening and cooling products.Described cooling section is provided with aspirator, is used to aspirate steam and other waste gas of rising behind the cooling products.Described aspirator is a suction bar, and suction bar is box-shaped body or tubular body, and the bottom of suction bar is or/and the side is provided with SS, and the quantity of SS is determined according to the size and the needs of kiln.
Compared with prior art, advantage of the present invention is: utilize low oxygen concentration wind, particularly circulating flue gas to regulate the oxygen concentration of air feed, according to the quantitative oxygen supply of oxygen requirement of each stage material roasting oxidation, avoid oxygen excess to cause material burning or sintering; Air feed beam air feed, wind is evenly distributed, and has improved roasting effect, good product quality; Discharging opening is provided with flashback tank, at the bottom of the both salable kiln, again can cooling products, and be convenient to discharging; Cooling section is provided with suction bar and in time extracts steam and other waste gas out, avoids the interference of lower gas to conversion zone.
Description of drawings
Fig. 1 is an Industrial Stoves device schematic diagram of the present invention;
Fig. 2 is another program Industrial Stoves device schematic diagram of the present invention;
Fig. 3 is an air feed beam cutaway view of the present invention;
Fig. 4 is another structure air feed beam cutaway view of the present invention;
Fig. 5 is the third structure air feed beam cutaway view of the present invention.
The specific embodiment
The present invention is further illustrated below in conjunction with accompanying drawing.
The Industrial Stoves that present embodiment provided are perpendicular type structure, and the kiln body section is square, and whole kiln is a steel construction, is lined with insulation material and refractory brick in the kiln body.As shown in Figure 1, described kiln includes kiln body 3, feeding device 1, drawing mechanism 11, smoke filter 18, blower fan 16 and chimney 20.Be divided into preheating section 4, conversion zone 5, cooling section 7, discharging opening 9 and device for discharging 10 in the kiln body.The conversion zone of kiln is provided with 3 row's air feed beams 6, from the every row of last several the 1st, 3 rows an air feed beam is housed, and every air feed beam is established 3 air outlets, and the 2nd row is equipped with two air feed beams, and every air feed beam is established two air outlets.As shown in Figure 3, air feed beam 6 is a tubular body, and the air feed beam is provided with the cavity 22 of cooling medium circulation, and the cooling medium that uses is water.The air outlet 23 of air feed beam is under shed, and air outlet is a Long Circle.The top of kiln is provided with flue gas gatherer 2, and flue gas is taken out gatherer is connected to smoke filter 18 through exhanst gas outlet inlet.Smoke filter 18 outlet is divided into 4 tunnel, three tunnel inlets that are connected to blower fan 16 after joining with air line 21 respectively, and the outlet of every typhoon machine connects row's air feed beam 6; Another road is connected to chimney 20 through air-introduced machine 19.The flue gas line and the air line 21 of fans entrance all are provided with valve 17, and determination of oxygen content instrument 15 and gas sample tap are housed on the fan outlet tube line.
The bottom of kiln is provided with flashback tank 12, and kiln is a micro-pressure operation, and the water tank middle water level is decided on the pressure of kiln.Cooling section 7 is provided with two suction bars 8, is used to aspirate steam and other waste gas body of rising behind the cooling products.Suction bar is a box-shaped body, and every suction bar is provided with 4 SSs, and SS is offered downwards, and SS is oval.Suction bar 8 is connected to air exhauster 14 by steam treatment equipment 13, is connected to chimney 20 by air exhauster.
Described kiln moves as follows, is entered in the kiln body 3 by feeder apparatus 1 by the carbon dressing metal pelletizing material of roasting, and operation enters conversion zone 5 downwards after preheating section 4 preheatings, provides the combustion air of suitable oxygen concentration to react by air feed beam 6.The operation downwards of reacted product to discharging opening 9, after 12 coolings of discharging opening flashback tank, goes out kiln through device for discharging 10 and drawing mechanism 11 through cooling section 7.Reacted flue gas enters smoke filter 18 dust removals by filtration through flue gas gatherer 2, and the flue gas after the dedusting is divided into four the tunnel, the one tunnel and enters chimney 20 discharging through air-introduced machine 19, and other three the tunnel join with air respectively respectively arranges air feed beam 6 after blower fan 16 enters.Valve 17 with air line 21 and flue gas line is regulated exhaust gas volumn and air capacity, and control enters oxygen concentration of air in the air feed beam 6.Steam and other kiln waste gas that discharging opening 9 place's cooling products in bottom produce are extracted out by suction bar 8, and the waste gas after the 13 condensation dedustings of steam treatment equipment enters chimney 20 through air exhauster 14, arrives atmosphere by smoke stack emission.
Another embodiment of the present invention as shown in Figure 2, kiln body 3 internal reaction sections are provided with five row's air feed beams, are provided with three air feed beams 6 from the every row of last several the 1st, 3,5 rows, every beam is provided with 3 groups of air outlets; 2nd, the every row of 4 rows is provided with two air feed beams, and every is provided with 4 groups of air outlets; As shown in Figure 4, the air feed beam is a rhombus tubulose body structure, and air outlet is located at two to following center, with the angle of vertical line be 45 °, air outlet 23 is a rectangle, every group of two air outlets are installed relatively.Air feed beam 6 is provided with the cavity 22 of cooling medium circulation, and the cooling medium that uses is conduction oil.
Cooling section 7 is provided with three row's suction bars 8, and suction bar 8 is a tubular body, and every suction bar has 5 SSs, and SS is a rectangle, is located at the bottom of suction bar.
As shown in Figure 5, the air feed beam of the another kind of structure that provides for present embodiment.Described air feed beam 6 is the circle tubular body, is provided with two and discharges air port 23.Two discharge air ports is tilted to down, with the vertical line angle be 45 °, air feed beam 6 is provided with the cavity 22 that cooling medium circulates.
The cross section of the described kiln of present embodiment is circular, and other structure and connection are identical with embodiment 1, repeat no more.
Claims (9)
1, a kind of Industrial Stoves, include: kiln body, feeding device and drawing mechanism, be divided into preheating section (4), conversion zone (5), cooling section (7) and discharging opening (9) in the kiln body (3), it is characterized in that: the conversion zone of kiln is provided with air-intake device, and described air-intake device is connected with low oxygen concentration wind line with air line (21).
2, Industrial Stoves according to claim 1 is characterized in that: described low oxygen concentration wind line is the flue gas line of kiln, and described air-intake device is connected with the flue gas line with air line (21) by blower fan (16).
3, Industrial Stoves according to claim 2 is characterized in that: described air-intake device is air feed beam (6), and described conversion zone is provided with at least one row's air feed beam (6), at least one air feed beam of every row, and the air feed beam has air outlet (23).
4, Industrial Stoves according to claim 3 is characterized in that: described air feed beam (6) is tubular body or box-shaped body; Described air outlet 23 is under shed, with the angle of vertical line be 0～90 °; The air feed beam is provided with the cavity (22) of cooling medium circulation.
5, according to the Industrial Stoves of claim 4, it is characterized in that: described conversion zone is provided with 1～10 row's air feed beam (6), 1～10 air feed beam of every row, and the alternate discharging of upper and lower row's air feed beam makes a row air feed beam be in the centre position that next arranges two air feed beams.
6, Industrial Stoves according to claim 2 is characterized in that: be provided with flue gas gatherer (2) on kiln top.
7, Industrial Stoves according to claim 2 is characterized in that: the outlet line of described blower fan (16) is provided with determination of oxygen content instrument (15) or/and the gas sample mouth.
8, according to each described described Industrial Stoves in the claim 1～7, it is characterized in that: the bottom discharging opening of described kiln is provided with flashback tank (12); Described cooling section is provided with the Abgasabsaugung device.
9, described according to Claim 8 described Industrial Stoves is characterized in that: described Abgasabsaugung device is suction bar (8), and described suction bar is box-shaped body or tubular body, and the bottom of suction bar is or/and the side is provided with SS.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100553714A CN101307986A (en) | 2008-07-09 | 2008-07-09 | Industrial kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100553714A CN101307986A (en) | 2008-07-09 | 2008-07-09 | Industrial kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101307986A true CN101307986A (en) | 2008-11-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100553714A Pending CN101307986A (en) | 2008-07-09 | 2008-07-09 | Industrial kiln |
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| Country | Link |
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| CN (1) | CN101307986A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101817649A (en) * | 2010-05-10 | 2010-09-01 | 贾会平 | Method and equipment for calculating materials |
| CN102353273A (en) * | 2011-07-22 | 2012-02-15 | 石家庄市新华工业炉有限公司 | Method and device for using low temperature heat of lime kiln |
| CN101830646B (en) * | 2009-03-12 | 2012-04-18 | 贾会平 | Lime calcining method and star-shaped kiln device |
| CN102589301A (en) * | 2012-03-01 | 2012-07-18 | 石家庄博广热能科技有限公司 | Cooling type suction beam for lime kiln |
| WO2017020789A1 (en) * | 2015-08-01 | 2017-02-09 | 江学艺 | Metal ore metal recovery process and metal ore metal recovery process furnace |
-
2008
- 2008-07-09 CN CNA2008100553714A patent/CN101307986A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101830646B (en) * | 2009-03-12 | 2012-04-18 | 贾会平 | Lime calcining method and star-shaped kiln device |
| CN101817649A (en) * | 2010-05-10 | 2010-09-01 | 贾会平 | Method and equipment for calculating materials |
| CN101817649B (en) * | 2010-05-10 | 2012-08-22 | 贾会平 | Method and equipment for calculating materials |
| CN102353273A (en) * | 2011-07-22 | 2012-02-15 | 石家庄市新华工业炉有限公司 | Method and device for using low temperature heat of lime kiln |
| CN102589301A (en) * | 2012-03-01 | 2012-07-18 | 石家庄博广热能科技有限公司 | Cooling type suction beam for lime kiln |
| WO2017020789A1 (en) * | 2015-08-01 | 2017-02-09 | 江学艺 | Metal ore metal recovery process and metal ore metal recovery process furnace |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20081119 |