CN1202035C - Improved vertical lime kiln of mixed brick structure - Google Patents
Improved vertical lime kiln of mixed brick structure Download PDFInfo
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- CN1202035C CN1202035C CN 02133708 CN02133708A CN1202035C CN 1202035 C CN1202035 C CN 1202035C CN 02133708 CN02133708 CN 02133708 CN 02133708 A CN02133708 A CN 02133708A CN 1202035 C CN1202035 C CN 1202035C
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- fire grate
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Abstract
The present invention provides an improved lime vertical kiln with a brick and concrete structure. The lime vertical kiln comprises a kiln body, a central distribution table in the kiln body, a fire grate, grids, discharge holes among the grids, corresponding discharge rods, a storage bunkers and a discharge hopper, namely that a turritus cast steel fire grate with an integral structure is arranged on the center distribution table supported by a load bearing bottom plate on a lining column of the kiln body; frame type steel grids are uniformly distributed at the circumference of the fire grate; the fire grate and an air inlet under the central distribution table can be perforated by airflow; the fire grate with a ventilating opening and an annular operation chamber can be perforated by the airflow; the operation chamber as the air inlet passage of the kiln body is also communicated with the outer wall of the kiln body, the air inlet on the lining and an operation hole through the airflow. The present invention has the advantages of coal consumption reduction, high qualification rate, safe and reliable structure and convenient and flexible operation, and effectively increases ventilation effect.
Description
Technical field
The present invention relates to a kind of improvement of the vertical lime kiln of mixed brick structure to lime calcining, be particularly suitable for the big unit of lime expenses such as metallurgy, chemical industry, Construction Building Materials and use.
Background technology
Known to the applicant: this very ancient and traditional material of construction of lime, along with the development of nation-building, increasing to its demand.According to statistics, what have lime output now all is that the common lime shaft kiln is produced more than 90%, and ordinary shaft kiln is topmost production kiln type.The shortcoming of its existence is a unreasonable structure, causes the big output of investment few, the ash discharge difficulty, and can not ensure the quality of products.And the shaft kiln size of brick mix structure is difficult to do greatly.In a word, be difficult to stablize preheating zone, calcining zone and the cooling zone of shaft kiln, consequently coal consumption is big, and product percent of pass is low.It is investigated that the Chinese patent communique disclosed the application for a patent for invention technology (publication number: CN1258652A) that is called " a kind of New-structure limekiln " on July 5th, 2000.As can be known, this technology has proposed to solve the problem that existing ordinary shaft kiln exists to a certain extent from its file.But still the problem that exists some to be worth the merchant to consult: such as sub-material is to adopt brick sub-material pyramid, can make ventilation not smooth, because the kiln body is taller and bigger, complete in eight cinder-discharging ports and central distribution platform air intake, seem and the air output deficiency also need increase the cost of per unit area yield lime by the blower fan forced air inlet.Owing to the human factor in producing, there is the phenomenon of red ash (the lime temperature is more than 200 ℃) in the production unavoidably again, because of kiln body base plate material is a Steel Concrete, easily causes kiln body breach, so that draw the external wall of bad kiln, influence the structural safety of kiln body.Also have fire grate on the central distribution platform, owing to be subjected to the high influence of temperature, that makes is unreasonable in addition, and stability is bad, falls apart easily.
Summary of the invention
The objective of the invention is to propose a kind of improvement of vertical lime kiln of mixed brick structure and perfect technical solution at above-mentioned the deficiencies in the prior art part.
Technical solution of the present invention is: comprise the kiln body, central distribution platform in the kiln, fire grate, grate, ash-removing mouth between grate and corresponding blowing bar, storage bunker, drain hopper, promptly on the central distribution platform that the bearing soleplate on the kiln body liner column supports, be equipped with integrally-built, turriform cast steel fire grate, be evenly equipped with frame-type steel grate around this fire grate, blast inlet under fire grate and the central distribution platform can connect by air-flow, the grate that has a ventilation opening can connect by air-flow by ash-removing mouth and annular operation room, as the operation room of kiln body air intake passage also with external wall of kiln and liner on blast inlet, the handle hole air-flow communicates.
The external wall of described kiln is the brick heavy wall of mixed mortar, layout multiple tracks collar tie beam and structural column in it, the preheating zone, top of kiln body liner is a truncated cone-shaped, the bottom cooling zone of kiln body liner is reverse frustoconic, be provided with insulating sandwich between external wall of kiln and liner, be equipped with insulating pad layer around the ash-removing mouth and on the kiln body bearing soleplate.
Described ash-removing mouth is the Clad Steel box, has insulating pad layer in its interlayer.
The setting of the collar tie beam of described increase steadiness is that top is rare, bottom and high temperature section are close, and structural column is evenly to arrange.
Described frame-type steel grate is to adopt round steel to have spacing to be distributed on the pyramid of each Steel Concrete support, one end bearing is on described ash-removing mouth side kiln body Steel Concrete bearing soleplate plate face, the other end is bearing on two brace tables between the ash-removing mouth, is laid with under the round steel to reinforce to use rail.
Described storage bunker be with kiln body inner liner wall on built-in fitting be connected, its down Hatch Opening join with drain hopper, drain hopper has balanced wicket and operation handle arm, gate exports and is connected with transfer roller, is provided with blocking material plate on transfer roller.
Described annular heat tank, its steel body structure of being laid with all around at kiln body liner outer wall top is along its periphery installation.
Thermofin between the described kiln body liner outer wall is heat insulation slag.
Reaching heat insulating mattress around the described ash-removing mouth is aluminium silicate products.
The present invention is tangible owing to taking abovementioned technology, its advantage: performance of ventilating significantly improves, and abundant burning, the coal consumption that helps coal more economized, product percent of pass is higher, and the structure safety and reliability, and more convenient operation is flexible.Specifically, truncated cone-shaped is made on kiln body liner top, when admixtion falls, can make the peripheral bed of material loose, and the quantity of fuel that drains in the following bed of material can be more down; Kiln body bottom makes reverse frustoconic, and it is well distributed along the square section of kiln body to help air, also reduces the size of dumping device simultaneously.The pressure of material to outer wall has not only been satisfied in the laying of collar tie beam and structural column in the external wall of kiln, has also subdued the bulging force of high temperature section thermal expansion, shows that to the test of kiln body is on probation kiln body non-structure destroys and thermal cracking occurs after building up.It is heat insulation to establish slag between the wall of kiln inside and outside, and cost is low, good heat-insulation effect, reduced kiln body heat content loss.Around eight ash-removing mouths and kiln body bearing soleplate establish insulating pad layer, eight ash-removing mouths make the Clad Steel box and establish insulating sandwich, after this handles, when red ash appears in drain hole, can guarantee that temperature is no more than 60 ℃ on the Steel Concrete bearing soleplate face, thereby guarantee the structural safety of kiln body.Tower-shape fire bar on the central distribution platform adopts the integrally-built cast steel of good heat resistance to make, and has overcome the drawback of falling apart in using.Have a plurality of long strip shape ventilation openings on it, play the air-supply effect of kiln body centre, will calcine simultaneously good material from the centre of kiln to around profile dip, make its whole cross section unload ash evenly along kiln.Establish the operation room passage in the kiln body, operation when being convenient to unload ash, this passage is again an air intake passage simultaneously, air quantity is by outer wall air inlet port admission passage in the kiln, enter in the kiln by base plate ventage, liner ventage and ash-removing mouth and central distribution platform inlet mouth from base plate air inlet port and handle hole again, thereby formed the air quantity perforation, reached the good ventilation effect.The improvement of storage bunker is compared with former shaft kiln, has reduced the vibration dumping device, through on probation flexible to operation.Hot water tank is laid on the kiln top, makes full use of waste heat, has reduced hot water boiler, has saved construction investment and running cost or the like.In addition, compared with prior art, also has its remarkable economic efficiency: reduced investment, steel shaft kiln than equivalent production capacity reduces gross investment nearly 1/3rd, the product percent of pass height, by to the actual detected of structure limekiln product of the same type, this product percent of pass is greater than 95%, particularly at the Wingdale calcium oxide greater than 54% o'clock, can produce the superfine metallurgy lime more than 80%, economize coal, the employing technology, lime per ton need burn in the hard coal of 5000 kilocalorie/kilograms about about 195 kilograms, and the homogeneous structure lime vertical kiln, produces the hard coal that lime per ton need burn same quality and is not less than 210 kilograms.
Description of drawings
Fig. 1 is vertical sectional structure chart of the present invention.
Fig. 2 is the enlarged view of overlooking of Fig. 1.
Fig. 3 is that the A-A of Fig. 2 is to sectional view.
Fig. 4 is that the B-B of Fig. 3 is to sectional view.
Fig. 5 is an operation room plan view from above among Fig. 1.
Fig. 6 is a discharge mechanism synoptic diagram among Fig. 1
Fig. 7 is that the C-C of Fig. 6 is to sectional view.
Embodiment
Referring to Fig. 1--Fig. 7, the external wall 1 of kiln grouts common brick, interior cloth 10 one reinforced concrete circle beam 21 and eight root architecture posts 27 by the thick M10 mixed sand of 620mm, and collar tie beam 21 spacings (49-160cm) are that kiln top is rare, and bottom and high temperature section are close.Structural column 27 is uniform distribution.The top (preheating zone) of kiln body liner 2 makes truncated cone-shaped, and diameter is φ 7.0m on the round platform, and diameter is φ 7.6m at the bottom of the platform, when admixtion falls, can make the peripheral bed of material loose, and the fuel that drains in the following bed of material can be more down; Kiln body bottom (cooling zone) makes reverse frustoconic, and the round platform back cut diameter is φ 7.5m, and lower port diameter is φ 6.66m, and it is well distributed along the square section of kiln body to help air, also reduces the dumping device size simultaneously.The external wall 1 of kiln mixes right cylinder for brick.Be provided with slag thermofin 15 between external wall 1 of kiln and the liner 2, the thickness thinnest part is more than the 85cm, the material in-site collecting, cheap, cancelled the clay brick insulated wall in the former ordinary shaft kiln thermofin, can reduce heat insulation cost 50%, and good heat-insulation effect has reduced the loss of kiln body heat content.Lay heat insulating mattress 10 around eight ash-removing mouths and on the kiln body bearing soleplate 9, lay the thick pure aluminium silicate felt of 80mm on the bearing soleplate, eight ash-removing mouths are Clad Steel box 8, the thick pure aluminium silicate felt of folder 40mm in its interlayer, after this handles, when red ash appears in ash-removing mouth, can guarantee that temperature is no more than 60 ℃ on the Steel Concrete load-bearing bottom surface, guarantee the structural safety of kiln body.Eight branch ash grates 3 are steelwork, make it not only play branch ash (material) effect but also play ventilation.Concrete structure is: the round steel with φ 60mm is evenly arranged on each pyramid, and the round steel arrangement pitches is 110mm, and an end bearing is on ash-removing mouth side kiln body Steel Concrete bearing soleplate 9, and the other end is bearing on the brace table 5 between two drain holes.Round steel is laid two 43mm rail 11 that are used to reinforce down, when being φ 60-80mm as if round steel, fixing all round steel with 25mm Plate Steel band and fixes all round steel, constitutes tower structure.The opposite side of cone is identical.Tower-shape fire bar 6 on the central distribution platform adopts the cast steel of good heat resistance to be made into integral structure component, and its thickness is 60mm, has a plurality of long strip shape ventilation openings on this fire grate 6.Overcome the drawback of falling apart in using, played the air-supply in centre in the kiln, will calcine simultaneously the centre of good material in the kiln to around profile dip, it is even to make its whole cross section along kiln unload ash.Establish annular operation room 14 in the kiln body, the operation when being convenient to unload ash (28 turnover) from the hole, the passage of this operation room formation is again the air intake passage of kiln body simultaneously.Operation room 14 is made up of 25, eight outer wall air inlet ports 22 of inwall air inlet port and the beam support 26 of vestibule and 13, ten six 250 * 250mm of eight handle holes.Air quantity is by air inlet port 22 admission passages 14 on eight outer walls in the kiln, enters in the kiln body by base plate air inlet port 4, inwall air inlet port 4 and eight (or 6-10 is individual) ash-removing mouths 8 and central distribution platform inlet mouth 20 once more from 16 inwall air inlet ports 25 and eight handle holes 13 again.After improving thus, increase by 50% than former air output.Be equipped with blowing bar 7 below the ash-removing mouth 8.Kiln body bearing soleplate 9 centers are by 12 supportings of four Steel Concrete principal posts, and the edge reaches the kiln basis by eight beam supports 26 and outer wall 1 supporting with gravity.Built-in fitting 30 on storage bunker 16 and kiln body liner 2 walls is welded to connect, its Hatch Opening edge and drain hopper 18 welding, and drain hopper 18 has balanced wicket 17 and operation handle arm 24, and its gate 17 outlets are connected mutually with transfer roller, and transfer roller is provided with blocking material plate 29.The volume of storage bunker 16 is about 30 tons, is steel body structure spare, and it in this, after continuing to cool off, is exported the following lime temporary storage that unloads in the kiln outside the kilns by rotary conveyor 19.Be laid with 400 * 500mm hot water tank 23 at kiln body liner 2 outer wall tops, its steel body structure is installed along periphery.Apparatus of the present invention are suitable for producing daily 120 tons of lime, feed about 700 cubic metres, belong to big-and-middle-sized lime calcining shaft kiln.
Claims (9)
1. modified version vertical lime kiln of mixed brick structure that is used for lime calcining, comprise the kiln body, central distribution platform in the kiln, fire grate, grate, ash-removing mouth between grate and corresponding blowing bar, storage bunker, drain hopper, it is characterized in that: on the central distribution platform that the bearing soleplate on the kiln body liner column supports, be equipped with integrally-built, turriform cast steel fire grate, be evenly equipped with frame-type steel grate around this fire grate, blast inlet under fire grate and the central distribution platform can connect by air-flow, the grate that has a ventilation opening can connect by air-flow by ash-removing mouth and annular operation room, as the operation room of kiln body air intake passage also with external wall of kiln and liner on blast inlet, the handle hole air-flow communicates.
2. modified version vertical lime kiln of mixed brick structure according to claim 1, it is characterized in that: the external wall of kiln is the brick heavy wall of mixed mortar, layout multiple tracks collar tie beam and structural column in it, the preheating zone, top of kiln body liner is a truncated cone-shaped, the bottom cooling zone of kiln body liner is reverse frustoconic, be provided with insulating sandwich between external wall of kiln and liner, be equipped with insulating pad layer around the ash-removing mouth and on the kiln body bearing soleplate.
3. modified version vertical lime kiln of mixed brick structure according to claim 1 is characterized in that: ash-removing mouth is the Clad Steel box, is provided with insulating pad layer in its interlayer.
4. modified version vertical lime kiln of mixed brick structure according to claim 2 is characterized in that: the setting that increases the collar tie beam of steadiness is that top is rare, bottom and high temperature section are close, and structural column be even layout.
5. modified version vertical lime kiln of mixed brick structure according to claim 1, it is characterized in that: frame-type steel grate is to adopt round steel to have spacing to be distributed on the pyramid of each Steel Concrete support, one end bearing is on described ash-removing mouth side kiln body Steel Concrete bearing soleplate plate face, the other end is bearing on two brace tables between the ash-removing mouth, is laid with under the round steel to reinforce to use rail.
6. modified version vertical lime kiln of mixed brick structure according to claim 1, it is characterized in that: storage bunker be with kiln body inner liner wall on built-in fitting be connected, Hatch Opening and drain hopper join under it, drain hopper has balanced wicket and operation handle arm, the gate outlet is connected with transfer roller, is provided with blocking material plate on transfer roller.
7. modified version vertical lime kiln of mixed brick structure according to claim 1 is characterized in that: be laid with the annular heat tank around at kiln body liner outer wall top, its steel body structure is installed along its periphery.
8. modified version vertical lime kiln of mixed brick structure according to claim 2 is characterized in that: the thermofin between the wall of kiln inside and outside is heat insulation slag.
9. modified version vertical lime kiln of mixed brick structure according to claim 2 is characterized in that: reaching heat insulating mattress around the ash-removing mouth is aluminium silicate products.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02133708 CN1202035C (en) | 2002-09-06 | 2002-09-06 | Improved vertical lime kiln of mixed brick structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02133708 CN1202035C (en) | 2002-09-06 | 2002-09-06 | Improved vertical lime kiln of mixed brick structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1403398A CN1403398A (en) | 2003-03-19 |
| CN1202035C true CN1202035C (en) | 2005-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02133708 Expired - Fee Related CN1202035C (en) | 2002-09-06 | 2002-09-06 | Improved vertical lime kiln of mixed brick structure |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101870561B (en) * | 2010-06-03 | 2012-08-29 | 南京旋立重型机械有限公司 | Large automatic shaft lime kiln |
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- 2002-09-06 CN CN 02133708 patent/CN1202035C/en not_active Expired - Fee Related
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| CN1403398A (en) | 2003-03-19 |
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Granted publication date: 20050518 Termination date: 20110906 |