CN101456684A - Lime burner using solid fuels - Google Patents
Lime burner using solid fuels Download PDFInfo
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- CN101456684A CN101456684A CNA2009100736279A CN200910073627A CN101456684A CN 101456684 A CN101456684 A CN 101456684A CN A2009100736279 A CNA2009100736279 A CN A2009100736279A CN 200910073627 A CN200910073627 A CN 200910073627A CN 101456684 A CN101456684 A CN 101456684A
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- solid fuel
- kiln
- beam body
- limestone
- limestone kiln
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Abstract
The invention relates to a lime kiln using a solid fuel, which consists of a kiln body, a feeding device, a combustion system, a discharge system, an air supply system, a control system and a heat exchange system, wherein the kiln body is divided into a feeding hole, a preheating area, a calcining area, a cooling area and a discharge hole. The calcining area of the lime kiln is provided with at least one row of beam bodies, each row has at least one beam body, and the beam body is provided with a cavity for circulation of a cooling medium to cool the beam bodies; and the lower part at two ends of each beam body is provided with a solid fuel spraying port. The beam body has a flat structure, a concave structure, or a combustion beam type structure. The lime kiln uses the solid fuel to calcine lime stone, saves gas fuel, has low production cost, uses an air swept mill to be connected to the solid fuel spraying port, reduces volatilization of volatile components in coal, reduces production cost, and is safe and reliable during production; and under the shielding of the beam body, distribution and combustion of the sprayed fuel are more sufficient and even, so as to avoid blocking the solid fuel spraying port.
Description
Technical field
The present invention relates to a kind of limestone kiln, relating to a kind of specifically is the kiln that the fuel calcined limestone is produced lime with coal dust or coke powder.
Background technology
Lime is important material of construction, also is important raw and processed materials metallurgical, chemical industry.Existing technology is to be raw material with Wingdale, rhombspar, adopts the limestone kiln of lump coal heating or the heating of peripheral fuel burner nozzle to produce lime.The limestone kiln of doing fuel with lump coal coal and Wingdale in calcination process mix burning, because fuel can not well mix with combustion air, rate of combustion is low, can not adapt to large-scale industrial production lime; Adopt the limestone kiln of peripheral fuel burner nozzle, because the length of flame of burner is limited, flame can not arrive the center, causes the limestone calcination at kiln body center not saturating easily, influences the quality of lime product, has limited the size of kiln and the working ability of kiln simultaneously.
The applicant the utility model patent that the name of on October 20th, 2003 application is called " interior external heating type limestone kiln " disclose a kind of in the external heating type limestone kiln, the firing system of this limestone kiln is provided with combustion tube of furnace beam and peripheral burner, combustion tube of furnace beam is provided with burner, well solve the problem that coal firing limestone kiln and peripheral burner limestone kiln exist, improved combustion efficacy and quality product.But adopt this patented technology to need geseous fuel, because geseous fuel is valuable industrial chemicals, need to increase cost again with gas maked coal, it is uneconomical therefore to adopt the geseous fuel calcined limestone to produce lime.
" a kind of lime is fired kiln " utility application that the applicant submitted on July 25th, 2008 provides a kind of burning beam-type limekiln, and burning beam is provided with gas, solid fuel nozzle, and gas, solid fuel pass through in burning beam, burn at the burner place.This technology has realized producing lime with powdered solid fuel continuously feeding calcined limestones such as coal dusts, makes the building stones calcining more fully, evenly, and calcareous amount is good.The solid fuel that this technology is used is refined coal powder, and its deficiency is: 1. coal dust requires drying, and the drying process coal dust flies upward easily and sets off an explosion; 2. volatile matter vapors away thereupon in the coal dust drying process, causes energy loss; 3. coal dust is pulverized, is ground, and increases tooling cost.
Summary of the invention
For overcoming above-mentioned the deficiencies in the prior art, the invention provides a kind of limestone kiln of burning pulverized solid fuels, make solid fuel ignition more abundant, calcine effectively, can use the solid fuel of roughing fragmentation, reduce production costs.
The limestone kiln that uses solid fuel provided by the invention is made up of kiln body, feeder apparatus, firing system, discharge system, air feed system, Controlling System and heat-exchange system, divides opening for feed, preheating zone, calcining zone, cooling zone and discharge port in the kiln body.The calcining zone in limestone kiln is provided with at least one stringer body, and at least one beam body of every row, beam body are provided with the cavity of heat-eliminating medium circulation, are used to cool off the beam body; The bottom at every beam body two ends is provided with the solid fuel entrance.
Beam body of the present invention is slab construction or concave structure, does not get rid of the beam body of other structure.As selection, described beam body is for burning girder structure, and this burning beam type structural beams body is provided with burner, and fuel tube passes through in the beam body, is connected to burner.The top of described kiln body preheating zone is provided with at least one row and goes up the Abgasabsaugung beam, and the middle part, cooling zone is provided with Abgasabsaugung beam under at least one row.The top of beam body, bottom and side are provided with refractory insulating layer.Described limestone kiln is provided with that air swept mill, and the described outlet that air swept mill is connected to the solid fuel entrance.
Solid fuel of the present invention is coal dust or coke powder, by air swept mill or other disintegrating apparatus fragmentation is made, or outsourcing finished product coal dust or coke powder.The present invention is used for cake masss such as the auxiliary material of calcined limestone, rhombspar and cement.
Compared with prior art, advantage of the present invention is: the calcined limestone that 1. uses solid fuel, save geseous fuel, and production cost is low; 2. utilize that air swept mill is connected to the solid fuel entrance, spray into fuel and calcine, save special pulverized coal preparation process or buy the finished product refined coal powder, reduce the volatilization of volatile matter in the coal, reduce production costs; 3. production safety is reliable; 4. under the blocking of beam body especially concave structure beam body, the solid fuel ignition of ejection more fully, evenly; 5. use burning beam type structural beams body, both stopped descending limestone material, avoid stopping up the solid fuel entrance, for coal dust spray into and burning provides the space, as the burning beam burning, the boosting calcined limestone increases incinerating intensity again, improve the calcining effect, improve the quality of products and working ability.
Description of drawings
Fig. 1 is the present invention's limestone kiln synoptic diagram that uses solid fuel;
Fig. 2 is the present invention's limestone kiln side-view that uses solid fuel;
Fig. 3 is the sectional view of slab construction beam body;
Fig. 4 is the sectional view of concave structure beam body;
Fig. 5 is the sectional view of burning beam type structural beams body;
Fig. 6 is the sectional view of matrix burning beam type structural beams body;
Fig. 7 is the synoptic diagram of burning beam type structural beams body.
Wherein: cavity, 9-refractory insulating layer, 10-burner, 11-solid fuel pipe, 12-fuel gas passage, 13-combustion air passage of 1-feeder apparatus, 2-upward Abgasabsaugung beam, 3-kiln body, 4-beam body, 5-solid fuel entrance, 6-following Abgasabsaugung beam, 7-discharge port, circulation of 8-heat-eliminating medium.
Embodiment
Embodiment 1
Fig. 1, Fig. 2 are synoptic diagram of the present invention.As shown in Figure 1 and Figure 2, the limestone kiln that uses solid fuel is made up of kiln body 3, feeder apparatus 1, firing system, discharge system, air feed system, Controlling System and heat-exchange system, divides opening for feed, preheating zone, calcining zone, cooling zone and discharge port 7 in the kiln body.The calcining zone in limestone kiln is provided with two stringer bodies 4, and last row has 3 beam bodies, and following row has two beam bodies, upper and lower stringer body 4 alternate dischargings.The bottom at every beam body 4 two ends is provided with solid fuel entrance 5, is used to spray into powdered solid fuel.The beam body is used to block descending limestone material, avoids stopping up the solid fuel entrance, for coal dust firing provides the space.The limestone kiln is provided with that air swept mill, broken, oven dry coal or coke, and for calcining provides fuel, the outlet that air swept mill is connected to solid fuel entrance 5 by pipeline.The top of preheating zone, limestone kiln have a row totally 3 go up Abgasabsaugung beams 2, be used to aspirate the useless flue gas behind the calcined limestone.The middle part of cooling zone is provided with a row totally two following Abgasabsaugung beams 6, is used to aspirate the hot gas behind the cool lime product.As shown in Figure 3, beam body 4 is a slab construction, and the cavity 8 of heat-eliminating medium circulation is arranged in the middle of the beam body, is used for by heat-eliminating medium, and cooling beam body avoids high temperature to burn out the beam body.Refractory insulating layer 9 is equipped with in the top of beam body, bottom and side.
The operation scheme in described limestone kiln is, limestone material enters the preheating zone of kiln body 3 through feeder apparatus 1, by the high-temperature flue gas that rises it is carried out preheating, material after the preheating goes downwards to calcining zone, go downwards to the position of solid fuel entrance 5 belows from the both sides of beam body 4, the solid fuel entrance ejection fuel of beam body below and combustion air burning are calcined material.Beam body 4 stops building stones process before the solid fuel entrance, avoids stopping up entrance, and distributes and the combustion space for coal dust provides.Solid fuel entrance 5 is played together with air one in broken dry back to coal through air swept mill, is injected to calcining zone and burns calcined limestone.Lime after the calcining continues descending discharge port 7 kiln discharges that pass through in the cooling zone after air cooling.The high-temperature flue gas of calcined limestone at preheating zone preheating building stones after on Abgasabsaugung beam 2 kiln discharge bodies, after the heat exchange to blowdown system discharging.High-temperature gas warp after the cool lime of cooling zone is Abgasabsaugung beam 6 kiln discharge bodies down, discharge to blowdown system after the heat exchange.
For improving combustion efficacy, present embodiment can select to adopt the beam body 4 of concave structure as shown in Figure 4.Equally, the beam body of concave structure also is provided with the cavity 8 of heat-eliminating medium circulation, and refractory insulating layer 9 is equipped with in the top of beam body, bottom and side.
Another program of the present invention such as Fig. 5, shown in Figure 7, described beam body 4 adopts the burning girder structure, and the beam body bottom of burning girder structure is provided with burner 10.Solid fuel pipe 11, geseous fuel pipeline 12 and combustion air pipeline 13 pass through from the Liang Tizhong of burning girder structure, are connected to burner 10.Refractory insulating layer 9 is equipped with in the top of beam body, bottom and side.Other structure is identical with embodiment 1.As shown in Figure 7, be provided with dividing plate in the middle of the burning beam, be divided into two portions from the centre, the bottom of each part is provided with 5 burners 10.Fuel conduit respectively from two ends enter the burning girder structure the beam body in be connected to burner.
The effect of the existing above-mentioned beam body of beam body of burning girder structure in the calcination process, stop descending limestone material, avoid stopping up solid fuel entrance 5, for providing, coal dust distributes and the combustion space, again by beam body transfer the fuel, in burner 10 burnings, auxiliary calcined limestone, increase incinerating intensity, improve the calcining effect, improve the quality of products and working ability.The fuel that the burner of burning beam type structural beams body uses is solid fuel or geseous fuel or liquid fuel, and perhaps solid fuel, geseous fuel and liquid fuel are used in combination.
Solid fuel entrance 5 can spray into fuel combustion simultaneously with the burner 10 of burning beam type structural beams body, or both replace use.Can adopt one to spray into fuel with the big fire form, another sprays into fuel with little fiery form, perhaps adopts one to spray into fuel combustion with the big fire form,, another does not spray into fuel.
Present embodiment can adopt the beam body of the burning of matrix as shown in Figure 6 girder structure, and its advantage is identical with concave structure beam body among the embodiment 1.
Claims (7)
1, a kind of limestone kiln that uses solid fuel, form by kiln body (3), feeder apparatus, firing system, discharge system, air feed system, Controlling System and heat-exchange system, divide opening for feed (1), preheating zone, calcining zone, cooling zone and discharge port (7) in the kiln body, it is characterized in that: the calcining zone in limestone kiln is provided with at least one stringer body (4), at least one beam body of every row, described beam body (4) are provided with the cavity (8) of heat-eliminating medium circulation; The bottom at described every beam body two ends is provided with solid fuel entrance (5).
2, the limestone kiln that uses solid fuel according to claim 1 is characterized in that: described beam body (4) is a slab construction.
3, the limestone kiln that uses solid fuel according to claim 1 is characterized in that: described beam body (4) is a concave structure.
4, the limestone kiln that uses solid fuel according to claim 1 is characterized in that: described beam body (4) is the burning girder structure, and the beam body of this burning girder structure is provided with burner (10), and fuel tube passes through in the beam body, is connected to burner (10).
5, the limestone kiln that uses solid fuel according to claim 1 is characterized in that: described limestone kiln is provided with that air swept mill, and the described outlet that air swept mill is connected to solid fuel entrance (5).
6, the limestone kiln that uses solid fuel according to claim 1 is characterized in that: the top of described kiln body preheating zone is provided with at least one row and goes up Abgasabsaugung beam (2), and the middle part, cooling zone is provided with Abgasabsaugung beam (6) under at least one row.
7, according to each described limestone kiln that uses solid fuel of claim 1～6, it is characterized in that: top, bottom and the side of described beam body (4) is provided with refractory insulating layer (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100736279A CN101456684A (en) | 2009-01-09 | 2009-01-09 | Lime burner using solid fuels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100736279A CN101456684A (en) | 2009-01-09 | 2009-01-09 | Lime burner using solid fuels |
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| Publication Number | Publication Date |
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| CN101456684A true CN101456684A (en) | 2009-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2009100736279A Pending CN101456684A (en) | 2009-01-09 | 2009-01-09 | Lime burner using solid fuels |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101863627A (en) * | 2010-07-13 | 2010-10-20 | 贾会平 | Double-beam lime kiln |
| CN101628790B (en) * | 2009-07-02 | 2011-12-07 | 贾会平 | Star-shaped lime kiln device |
| CN103130429A (en) * | 2011-11-25 | 2013-06-05 | 中冶长天国际工程有限责任公司 | Middle combustion beam for shaft furnace |
| CN103922616A (en) * | 2014-03-14 | 2014-07-16 | 石家庄奋进科技有限公司 | Steel-refractory material composite heat insulation type combustion beam |
| CN106116187A (en) * | 2016-08-30 | 2016-11-16 | 魏晓辉 | A kind of multi fuel lime shaft kiln A type quirk beam |
| CN110526595A (en) * | 2018-05-23 | 2019-12-03 | 绵竹市拱星氧化钙厂 | Efficient calcining prepares the mixing formula limekiln of lime |
-
2009
- 2009-01-09 CN CNA2009100736279A patent/CN101456684A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101628790B (en) * | 2009-07-02 | 2011-12-07 | 贾会平 | Star-shaped lime kiln device |
| CN101863627A (en) * | 2010-07-13 | 2010-10-20 | 贾会平 | Double-beam lime kiln |
| CN103130429A (en) * | 2011-11-25 | 2013-06-05 | 中冶长天国际工程有限责任公司 | Middle combustion beam for shaft furnace |
| CN103922616A (en) * | 2014-03-14 | 2014-07-16 | 石家庄奋进科技有限公司 | Steel-refractory material composite heat insulation type combustion beam |
| CN103922616B (en) * | 2014-03-14 | 2015-09-09 | 石家庄奋进科技有限公司 | A kind of steel and refractory materials composite adiabatic formula burning beam |
| CN106116187A (en) * | 2016-08-30 | 2016-11-16 | 魏晓辉 | A kind of multi fuel lime shaft kiln A type quirk beam |
| CN110526595A (en) * | 2018-05-23 | 2019-12-03 | 绵竹市拱星氧化钙厂 | Efficient calcining prepares the mixing formula limekiln of lime |
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Owner name: SHIJIAZHUANG XINHUA ENERGY ENVIRONMENTAL TECHNOLOG Free format text: FORMER OWNER: JIA HUIPING Effective date: 20130114 |
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Free format text: CORRECT: ADDRESS; FROM: 050091 SHIJIAZHUANG, HEBEI PROVINCE TO: 050431 SHIJIAZHUANG, HEBEI PROVINCE |
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Effective date of registration: 20130114 Address after: 050431 Hebei city of Shijiazhuang province Luancheng douyu town equipment manufacturing base of Xinhua Road No. 6 (douyu West Middle School) Applicant after: Shijiazhuang Xinhua Energy and Environmental Protection Technology Co., Ltd. Address before: 050091 Hebei city of Shijiazhuang Province in the South Street Palace Road No. 88 Applicant before: Jia Huiping |
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Application publication date: 20090617 |