CN2567534Y - Brick-concrete lime shaft kilm structure - Google Patents

Abstract

The utility model provides a brick-concrete lime shaft kiln structure for burning lime. The utility model is provided with an integral tower-shaped grate on a center distribution table supported by a weight-bearing bottom plate on a vertical column of a liner of a kiln body, and framework type grids are uniformly distributed on the periphery of the grate; air inlets where airflow can penetrate are arranged under the grate and the center distribution table; the grids provided with vents are communicated with airflow in an annular operating room by discharge openings and vent holes on the weight-bearing bottom plate; the operating room used as an air inlet channel of a kiln body is also communicated with airflow of the air inlets and operating holes on the outer wall of the kiln body and the liner. The ventilation of the utility model is greatly improved, and coal can be fully burned; accordingly, the utility model has the advantages of coal saving, high product qualification rate, safe structure and convenient and flexible operation.

Description

Brick mixes the lime vertical kiln structure

Technical field

The utility model and a kind of architecture advances that the brick of lime calcining is mixed lime vertical kiln are 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 construction material 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, burning zone and the salband 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 intake 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 an armored 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 purpose of this utility model is at above-mentioned the deficiencies in the prior art part, proposes a kind of improvement of vertical lime kiln of mixed brick structure and perfect technical solution.

Technical solution of the present utility model is: comprise the kiln body, central distribution platform in the kiln, fire grate, grate, drain hole between grate and corresponding blowing bar, storage bin, drain hopper, promptly on the central distribution platform that the bearing soleplate on the kiln body liner column supports, be equipped with integrally-built, tower-shape fire bar, be evenly equipped with the frame-type grate around this fire grate, has the air inlet that the energy air-flow connects under fire grate and the central distribution platform, the grate of opening ventilating opening communicates with annular operation room air-flow by the passage on drain hole and the bearing soleplate, as the operation room of kiln body air intake passage also with external wall of kiln and liner on air inlet, the handle hole air-flow communicates.

Arrange multiple tracks collar tie beam and structural column in the external wall of described kiln, the preheating zone, top of kiln body liner is a truncated cone-shaped, the bottom salband of kiln body liner is reverse frustoconic, is provided with insulating sandwich between external wall of kiln and liner, is equipped with insulating pad layer around the ash-removing mouth and on the kiln body bearing soleplate.

Described drain hole 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 armored concrete support, one end bearing is on described blowing oral-lateral kiln body armored concrete load-bearing bottom surface, the other end is bearing on two brace tables between the drain hole, is laid with under the round steel to reinforce to use rail.

Described storage bin be with kiln body inner liner wall on built-in fitting be connected, its down Hatch Opening join with drain hopper, drain hopper has flap gate and operating grip, gate exports and is connected with conveyer, is provided with striker plate on conveyer.

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.

The utility model 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 batch 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 cross section of kiln body to help air, also reduces the size of device for discharging 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 expansive 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 armored 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 strip ventilating 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 admission hole admission passage in the kiln, enter in the kiln by base plate blow vent, liner blow vent and drain hole and central distribution platform air inlet from base plate air admission hole and handle hole again, thereby formed the air quantity perforation, reached the good ventilation effect.Unload the improvement of grey bunker and compare, reduced the vibration device for discharging, through on probation flexible to operation with former shaft kiln.Hot water storgae is laid on the kiln top, makes full use of waste heat, has reduced hot-water boiler, has saved construction investment and operating 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 lime stone calcium oxide greater than 54% o'clock, can produce the superfine metallurgy lime more than 80%, economize coal, adopt present technique, lime per ton need burn greater than about about 195 kilograms of the anthracite of 5000 kilocalorie/kilograms, and the homogeneous structure lime vertical kiln, produces the anthracite 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 utility model.

Fig. 2 is the enlarged drawing of overlooking of Fig. 1.

Fig. 3 is that the A-A of Fig. 2 is to cutaway view.

Fig. 4 is that the B-B of Fig. 3 is to cutaway view.

Fig. 5 is an operation room plan view from above among Fig. 1.

Fig. 6 is a discharge mechanism schematic diagram among Fig. 1.

Fig. 7 is that the C-C of Fig. 6 is to cutaway view.

The specific embodiment

Referring to Fig. 1-Fig. 7, the external wall 1 of kiln is by the thick M of 620mm ₁₀Mixed sand grouts common brick, interior cloth 10 one reinforced concrete circle beam 21 and eight root architecture posts 27, 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 even distributions.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 batch 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 (salband) 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 cross section of kiln body to help air, also reduces the device for discharging size simultaneously.The external wall 1 of kiln mixes cylinder for brick.Be provided with the slag thermal insulation layer 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 thermal insulation layer, 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 alumina silicate felt of 80mm on the bearing soleplate, eight ash-removing mouths are clad steel box 8, the thick alumina silicate felt of folder 40mm in its interlayer, after this handles, when red ash appears in drain hole, can guarantee that temperature is no more than 60 ℃ on the armored concrete load-bearing bottom surface, guarantee the structural safety of kiln body.Eight branch ash grates 3 are steelwork, have both played material-distributing action, play draught effect again.Concrete structure is: the round steel with φ 60mm is evenly arranged on each pyramid, the round steel arrangement pitches is 110mm, one end bearing is on blowing oral-lateral kiln body armored concrete bearing soleplate 9, the other end is bearing on the brace table 5 between two drain holes, round steel is laid the 43mm rail 11 of two reinforcing usefulness down, if when round steel is φ 60-80mm, fix all round steel, constitute tower structure with 25 steel plate bands.The cone opposite side is identical.Fire grate 6 on the central distribution platform, adopt the cast steel of good heat resistance to manufacture, its structure is that overall structure, thickness are 60mm, have a plurality of strip ventilating openings on this fire grate 6, play the air-supply in centre in the kiln, to calcine simultaneously good material from the centre of kiln body to around profile dip, make its whole cross section unload ash evenly along kiln.Between setting operation 14, be convenient to unload ash manipulation (from door opening 28 turnover) in the kiln body, this passage is again the air intake passage of kiln body simultaneously.Air quantity is by air admission hole 22 admission passages 14 on eight outer walls in the kiln, enters in the kiln by the blow vent on the bearing soleplate 94, inwall air admission hole 4 ' and eight (or 6-10 is individual) ash-removing mouths and central distribution platform air inlet 20 from 16 inwall air admission holes 25 and eight (or 6-10) handle holes 13 again.Improve thus, make intake improve 50% than former shaft kiln.Unloading grey bunker 16 volumes is about 30 tons, and structure is the steel body.Built-in fitting 30 on this storage bin 16 and kiln body liner 2 walls is welded to connect, Hatch Opening under it and drain hopper 18 welding.Drain hopper 18 has flap gate 17 and operating grip 24, and the gate outlet is connected mutually with conveyer 19, and conveyer 19 is provided with striker plate 29.Be laid with hot water storgae 23 around the kiln body liner 2 outer wall tops, its steel body structure is installed along periphery.The utility model can be produced about 120 tons in lime daily, feeds about 700 cubic metres, belongs to the shaft kiln of big-and-middle-sized lime calcining.

Claims (7)

1. a brick mixes the lime vertical kiln structure, comprise the kiln body, central distribution platform in the kiln, fire grate, grate, drain hole between grate and corresponding blowing bar, storage bin, drain hopper, it is characterized in that: be equipped with integrally-built on the central distribution platform that the bearing soleplate on the kiln body liner column supports, tower-shape fire bar, be evenly equipped with the frame-type grate around this fire grate, has the air inlet that the energy air-flow connects under fire grate and the central distribution platform, the grate of opening ventilating opening communicates with annular operation room air-flow by the passage on drain hole and the bearing soleplate, as the operation room of kiln body air intake passage also with external wall of kiln and liner on air inlet, the handle hole air-flow communicates.

2. brick according to claim 1 mixes the lime vertical kiln structure, it is characterized in that: arrange multiple tracks collar tie beam and structural column in the external wall of kiln, the preheating zone, top of kiln body liner is a truncated cone-shaped, the bottom salband 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. brick according to claim 1 mixes the lime vertical kiln structure, it is characterized in that: drain hole is the clad steel box, has insulating pad layer in its interlayer.

4. brick according to claim 1 mixes the lime vertical kiln structure, it 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. brick according to claim 1 mixes the lime vertical kiln structure, 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 armored concrete support, one end bearing is on described blowing oral-lateral kiln body armored concrete load-bearing bottom surface, the other end is bearing on two brace tables between the drain hole, is laid with under the round steel to reinforce to use rail.

6. brick according to claim 1 mixes the lime vertical kiln structure, it is characterized in that: storage bin be with kiln body inner liner wall on built-in fitting welding, its down Hatch Opening weld with drain hopper, drain hopper has flap gate and operating grip, the gate outlet is connected with conveyer, is provided with striker plate on conveyer.

7. brick according to claim 1 mixes the lime vertical kiln structure, it is characterized in that: be laid with annular heat tank, its steel body structure around at kiln body liner outer wall top along its periphery installation.

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