CN100561092C - Double-firepot ring-shaped shaft kiln - Google Patents
Double-firepot ring-shaped shaft kiln Download PDFInfo
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- CN100561092C CN100561092C CNB2006100233191A CN200610023319A CN100561092C CN 100561092 C CN100561092 C CN 100561092C CN B2006100233191 A CNB2006100233191 A CN B2006100233191A CN 200610023319 A CN200610023319 A CN 200610023319A CN 100561092 C CN100561092 C CN 100561092C
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Abstract
The present invention relates to a kind of double-firepot ring-shaped shaft kiln, comprising: the first kiln tube (1), the second kiln tube (2); The cross section of the described first kiln tube (1) and the second kiln tube (2) is two identical semi-ring types; Described semi-ring type is made up of outer semi arch (201) and interior semi arch (202); In the semi-ring type, settle massive ore (4); Interface channel (3) is connected the interior semi arch (202) of two kiln tubes; The invention has the beneficial effects as follows: when can be implemented in the quality that guarantees the shaft furnace product, output, eliminate the passage blockage problem, thus the low investment and the less trouble of the equipment of realization.
Description
Technical field
The present invention relates to a kind of kiln of heat accumulating type calcining lumpy bulk material, relate in particular to a kind of pair of thorax shaft furnace.
Background technology
From the kiln of existing heat accumulating type calcining lumpy bulk material, kiln thorax cross section mainly contains following several: the one, and square; The 2nd, circular; The 3rd, semicircular.
The kiln of square-section is only limited to the lower situation of output, and this is because owing to structural restriction, and can not excessive institute cause with the ratio of minor face on the long limit of square-section.If the output of kiln improves, must increase long limit and minor face simultaneously, with the increase of realization calcining area, thus the raising of realization output, from existing experience, in this case, the gas bias current is excessive, causes the calcined product quality to reduce.
As seen from Figure 1: the round kiln thorax forms annular space by the periphery in kiln thorax cross section, realizes the uniformity that air-flow distributes, but has the susceptible to plugging defective of passage.Passage easily stops up this defective and is to use actual generation the in the process.For circular two thorax kilns, the passage that divides away from two kiln thorax middle interconnecting pieces is because distance is far away, and counterpart flow of flue gas speed is slow, therefore easy passage dust stratification in this section.
As seen from Figure 2: the passage that the shaft furnace in semicircle kiln thorax cross section connects two kiln thoraxes is on whole diameter, each several part material in semicircle differs bigger to the distance of diameter, therefore structurally still there is air-flow situation pockety, so ensureing under the product quality premise, its output raising also is restricted.
How to accomplish to guarantee the quality of product, the output that can guarantee product again is pendulum technical issues that need to address in face of the technical staff.
Summary of the invention
The technical issues that need to address of the present invention have provided a kind of double-firepot ring-shaped shaft kiln, are intended to solve the above problems.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions:
The present invention includes: the first kiln tube, the second kiln tube; The described first kiln tube and the second kiln tube link together by interface channel; The top of the first kiln tube and the second kiln tube comprises one or several dog-house and distributing device respectively, in the bottom of the first kiln tube and the second kiln tube one or several discharging opening is installed; Between the inwall of the first kiln tube and the second kiln tube, comprise the combustor nozzle that is used for to the required fuel of calcining materials; Top at the first kiln tube and the second kiln tube comprises first air blast and air-introduced machine respectively; When the first kiln tube is worked, the first air blast air blast, air-introduced machine is discharged waste gas, and material is through the second blower cools discharging near discharging opening; The cross section of the described first kiln tube and the second kiln tube is two identical semi-ring types; Described semi-ring type is made up of outer semi arch and interior semi arch; In the semi-ring type, settle massive ore; Interface channel is connected the interior semi arch of two kiln tubes.
Compared with prior art, the invention has the beneficial effects as follows: when can be implemented in the quality that guarantees the shaft furnace product, output, eliminate the passage blockage problem, thus the low investment and the less trouble of the equipment of realization; Compare the cross section and be circular or semicircle kiln, same specification promptly with the Isoquant situation under, the air-flow distribution bias current of this kiln type is littler, product quality is better.
Description of drawings
Fig. 1 is a Double Circle kiln thorax sectional view;
Fig. 2 is two semicircle kiln thorax sectional views;
Fig. 3 is a vertical view of the present invention;
Fig. 4 is a main pseudosection of the present invention;
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is described in further detail:
By Fig. 3, Fig. 4 as seen: the present invention includes: the first kiln tube 1, the second kiln tube 2; The described first kiln tube 1 and the second kiln tube 2 link together by interface channel 3; The top of the first kiln tube 1 and the second kiln tube 2 comprises one or several dog-house and distributing device (not shown) respectively, in the bottom of the first kiln tube 1 and the second kiln tube 2 one or several discharging opening (not shown) is installed; Between the inwall of the first kiln tube 1 and the second kiln tube 2, comprise the combustor nozzle 5 that is used for to the required fuel of calcining materials; Comprise first air blast 6 and air-introduced machine 8 respectively at the top of the first kiln tube 1 and the second kiln tube 2; When 1 work of the first kiln tube, 6 air blast of first air blast, air-introduced machine 8 is discharged waste gas, and material is through second air blast, 7 cooling dischargings near discharging opening; The cross section of the described first kiln tube 1 and the second kiln tube 2 is two identical semi-ring types; Described semi-ring type is made up of outer semi arch 201 and interior semi arch 202; In the semi-ring type, settle massive ore 4; Interface channel 3 is connected the interior semi arch 202 of two kiln tubes;
For vertical limekiln, the sectional area of kiln thorax is big more, and the output of corresponding kiln is high more, that is to say the kiln thorax sectional area that big more output correspondence is big more; And in order to guarantee the quality of product, the difference between interior radius of circle and the exradius is more little, and the distance between promptly interior semicircle and the outer semicircle is more little, and the air-flow in the kiln distributes even more, and the product quality of calcining is good more;
Ratio between the height of described inner arc radius, outer arc radius, the first kiln tube 1 and the second kiln tube 2 was at 1: 2: 6-1: between 2.5: 8;
Described combustor nozzle 5 levels are passed the kiln body case, and stretch along kiln thorax cross section vertical direction is curved downwards in the kiln thorax, form uniform injector 51 on two kiln thorax cross sections; The described first kiln tube 1 and the second kiln tube 2 are divided into three intervals: the preheating zone begins to end to the lower end of combustor nozzle 5 from kiln thorax top charging line; Burning zone spontaneous combustion device jet pipe 5 bottoms begin to end to interface channel 3 places; Salband is that interface channel 3 begins till the discharging opening of bottom.
After transforming the kiln thorax as the semi-round ring shape structure among the present invention, because two long kiln walls of semi-round ring shape are arc, under the condition of high temperature, it is stable that its structure is compared stalk.In the semi annular section passage inside and outside arc radius can design bigger as required, circular arc and external arc distance is certain in guaranteeing (guarantees the uniformity that airstream in kiln distributes thus, thereby under the situation assurance product quality), and its kiln body structure intensity is still highly stable.Two arcwall face parallel upright of annular, on the interior circular arc of annulus, the passage that two kiln bodies directly link to each other is set, because the radius size of inside and outside annular semi arch can conveniently be adjusted, so guarantee annulus two certain situations of cambered surfaces distance under, can guarantee enough kiln thorax sectional areas; In order to guarantee the uniformity of air flow in the kiln thorax, to the width dimensions of kiln thorax promptly the distance between two cambered surfaces do not design too big, the reducing of bias current in the time of can realizing air current flow like this, thus in the output that improves shaft furnace, also can ensure product quality.
Because interface channel will connect two cambered surfaces, adopt prefabricated section (or cast-in-place heat resistance concrete) to realize on the structure.
The fuel that calcining materials is used is supplied with by equally distributed Fuel lance on whole semi-round ring shape cross section.
Cloth uniformly smoothly for the kiln thorax of realizing the semi-round ring shape cross section is provided with one or several charge door and distributing device on each kiln thorax top, and the corresponding with it bottom at the kiln thorax is provided with one or several discharging opening.
The present invention has two symmetries first kiln tube and the second kiln tube in upright semi-round ring shape cross section side by side, in the lower part of two kiln tubes, is provided with interface channel the first kiln tube and the second kiln tube are coupled together.Massive ore is positioned at the inner space of two kiln tubes.Material sends into through calcining from the top of each kiln tube and the product after passing whole kiln thorax draws off from the kiln bottom.
The required fuel of calcining materials with certain pressure by combustor nozzle and import the first kiln tube and the second kiln tube in.Combustor nozzle and level are passed the kiln body case, and stretch along kiln thorax cross section vertical direction is curved downwards in the kiln thorax, form uniform on two kiln thorax cross sections.Be fixed combustion device jet pipe, steel construction be installed, combustor nozzle is fixed on the steel construction on kiln thorax top.
The required combustion air of calcining materials blasts the kiln body by air blast from kiln thorax top.Combustion air passes material bed flowing downward, with fuel in the mixed combustion of the bottom of combustor nozzle, realize calcining to material.
Material flows downward through the cooling zone after through calcining, is subjected to the cooling of the cooling air sent into by air blast in the cooling zone, discharges through the bottom discharge mouth then.
According to the condition and the calcining requirement of material, preheating zone, burning zone and the salband of the suitable kiln body of size is set.The preheating zone begins to end to the lower end of burning jet pipe from kiln thorax top charging line; Burning zone spontaneous combustion jet pipe bottom begins to end to the interface channel place; Salband is that interface channel begins till the discharging opening of bottom.
In kiln tube calcination process, another one kiln tube is not send into material and combustion air, but discharges flue gas, and this flue gas carries out preheating with the lump material of kiln tube when discharging.When the material of kiln tube was calcined, the kiln tube was not sent into fuel and combustion air, discharged flue gas, and the material in the kiln tube is carried out preheating, thereby realized energy savings, and two kiln tubes like this are running periodically alternately.Alternately the time is depended on device structure and material calcining time and decides.
The discharge of the flue gas in the kiln tube of the present invention produces suction by air-introduced machine and carries out.
Claims (3)
1. a double-firepot ring-shaped shaft kiln comprises: the first kiln tube (1), the second kiln tube (2); The described first kiln tube (1) and the second kiln tube (2) link together by interface channel (3); The top of the first kiln tube (1) and the second kiln tube (2) comprises one or several dog-house and distributing device respectively, in the bottom of the first kiln tube (1) and the second kiln tube (2) one or several discharging opening is installed; Between the inwall of the first kiln tube (1) and the second kiln tube (2), comprise the combustor nozzle (5) that is used for to the required fuel of calcining materials; Comprise first air blast (6) and air-introduced machine (8) respectively at the top of the first kiln tube (1) and the second kiln tube (2); When the first kiln tube (1) is worked, first air blast (6) air blast, air-introduced machine (8) is discharged waste gas, and material is through second air blast (7) cooling discharging near discharging opening; It is characterized in that: the cross section of the described first kiln tube (1) and the second kiln tube (2) is two identical semi-ring types; Described semi-ring type is by outer semi arch (201) and interior semi arch (202) and be connected respectively that two straightways at two semi arch two ends form; In the semi-ring type, settle massive ore (4); Interface channel (3) is connected the interior semi arch (202) of two kiln tubes.
2. double-firepot ring-shaped shaft kiln according to claim 1 is characterized in that: the ratio between the height of described inner arc radius, outer arc radius, the first kiln tube (1) and the second kiln tube (2) was at 1: 2: 6-1: between 2.5: 8.
3. double-firepot ring-shaped shaft kiln according to claim 1 and 2, it is characterized in that: described combustor nozzle (5) level is passed the kiln body case, and in the kiln thorax, stretch along kiln thorax cross section vertical direction is curved downwards, on two kiln thorax cross sections, form uniform injector (51); The described first kiln tube (1) and the second kiln tube (2) are divided into three intervals: the preheating zone begins to end to the lower end of combustor nozzle (5) from kiln thorax top charging line; Burning zone spontaneous combustion device jet pipe (5) bottom begins to locate to end to interface channel (3); Salband is that interface channel (3) begins till the discharging opening of bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100233191A CN100561092C (en) | 2006-01-13 | 2006-01-13 | Double-firepot ring-shaped shaft kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100233191A CN100561092C (en) | 2006-01-13 | 2006-01-13 | Double-firepot ring-shaped shaft kiln |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101000211A CN101000211A (en) | 2007-07-18 |
| CN100561092C true CN100561092C (en) | 2009-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100233191A Expired - Fee Related CN100561092C (en) | 2006-01-13 | 2006-01-13 | Double-firepot ring-shaped shaft kiln |
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| CN (1) | CN100561092C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102703678B (en) * | 2012-06-04 | 2013-10-09 | 石家庄新华能源环保科技股份有限公司 | Parallel flow type steel billet heating furnace |
| CN105399347B (en) * | 2015-11-23 | 2017-07-07 | 中冶天工集团天津有限公司 | Double thorax lime shaft kiln device for discharging lower component Efficient installation methods |
| CN106145719B (en) * | 2016-08-12 | 2018-05-29 | 鄂尔多斯市君正能源化工有限公司 | A kind of sleeve lime kiln injector cleaning plant |
| CN111233351B (en) * | 2020-03-10 | 2023-12-01 | 中冶京诚工程技术有限公司 | Double-hearth kiln and calcination method |
| CN114353506B (en) * | 2022-01-27 | 2023-06-23 | 中冶长天国际工程有限责任公司 | Annular channel structure for double-chamber lime kiln |
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2006
- 2006-01-13 CN CNB2006100233191A patent/CN100561092C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN101000211A (en) | 2007-07-18 |
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Owner name: BEIJING JIAYONGHUITONG ENERGY SCIENCE CO., LTD. Free format text: FORMER OWNER: SHANGHAI JIADE ENERGY TECHNOLOGY CO., LTD. Effective date: 20090821 |
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Effective date of registration: 20090821 Address after: C 4027, Kowloon business, 48 South Avenue, Beijing, Haidian District, Zhongguancun: 100081 Applicant after: Beijing Jiayong Huitong Energy Science & Technology Co., Ltd. Address before: E, building 6, Jin Ming building, 8 South Road, Shanghai, Zunyi, China: 200335 Applicant before: Shanghai Cadre Science Technology Corporation |
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