CN102643039B

CN102643039B - Vertical interlayer cyclone support-combustion lime kiln

Info

Publication number: CN102643039B
Application number: CN201210152539XA
Authority: CN
Inventors: 曹江宏
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-05-17
Filing date: 2012-05-17
Publication date: 2013-08-28
Anticipated expiration: 2032-05-17
Also published as: CN102643039A

Abstract

The invention discloses a vertical interlayer cyclone direct-combustion lime kiln. A pressure relief cone (3) is vertically and fixedly arranged at the center in a kiln body; flame paths (4) are formed between the outer wall (6) and the inner wall (8) of the kiln body; a calcining zone is formed between the pressure relief cone (3) and the inner wall (8) in the manner of interlayer; flame through holes (15) are arranged in a calcining interlayer on the inner wall (8) around the flame paths (4) of the interlayer of the calcining zone, whereas support-combustion brackets (9) are arranged corresponding to the flame through holes (15) in the calcining interlayer; high temperature furnaces (10) are respectively and tangentially connected into the flame paths (4) from ignition holes (5); and a cooling bucket (13) is arranged below the pressure relief cone (3) in the kiln body. The flame paths are arranged around the periphery of a kiln, and stones homogeneously dispersed and supported in the calcining zone are spirally and centripetally burnt, and thus, an atmosphere environment with a good combustion condition, uniform heating, heat radiation and full conduction is formed in the kiln, and meanwhile, spiral up hot air and the down stones reversely interact in the curing stroke, therefore, high-effect heat exchange with heat convection is realized.

Description

Vertical interlayer eddy flow props up the scoria ash furnace

Technical field

The present invention relates to relate to the processing of International Classification of Patents C04B lime, belong to the limestone calcination technology, especially vertical interlayer eddy flow props up the scoria ash furnace.

Background technology

In the known technology, Wingdale is one of wider important ore of purposes, and its course of processing generally need be passed through high-temperature calcination, Wingdale chemical ingredients: comprise CaO content 〉=53.5%; In the prior art, Wingdale adopts the calcining of kiln body.The limestone kiln mainly is made up of kiln body, feeding device, distribution device, combustion unit, ash-discharging device, electrical equipment, instrument control device, cleaning apparatus etc.Calcining temperature 1000-1200 ℃; Unit lime hear rate: 3673kj/t; The total rate of decomposition of Wingdale 〉=89%; Efflux gas dust content≤30mg/Nm ³, multifuel combustion formula technological process commonly used comprises, Wingdale and the fuel limestone kiln of packing into if geseous fuel is sent into through pipeline and burner, begins to decompose to 850 degree after the preheating, finishes calcining to 1200 degree, after cooling, unloads outside the kiln discharge again, namely finishes the production of unslaked lime product.But ubiquitous deficiency comprises that energy consumption is higher, and calcining temperature is inhomogeneous in the kiln, the extruding of material piece, thermal radiation deficiency etc.

Openly correlation technique is less, and as 200,910,225,187 1 kinds of parallel-flow regeneration of number of patent application kiln, it comprises: first and second upper axis; First and second lower shaft; Described upper axis is connected respectively on the described lower shaft; Described upper axis respectively has the bottom ring, and described lower shaft respectively has top loop; It is characterized in that: described bottom ring and described top loop link together by substantially horizontal structure, the gas that is produced by burning pushes up from described first axial flow to described second by circular crown, wherein said circular crown top is formed in the zone, and the slope of repose by the material of introducing limits, wherein, in described zone, described bottom ring connects described top loop.

Summary of the invention

The purpose of this invention is to provide a kind of vertical interlayer eddy flow and prop up the scoria ash furnace, this technology realizes that the calcination process heat energy utilization is abundant, and calcination efficiency improves, and quality product is guaranteed.

Goal of the invention of the present invention realizes by following technical measures: the top cover at kiln body top is installed charging bole, kiln body center of inside is erect the fixed decompression awl, form quirk between the external wall of kiln and inwall, interlayer forms calcining zone between decompression awl and inwall, on the inwall of the quirk of calcining zone interlayer, in the calcining interlayer, open burner, and the position cover of corresponding saturating burner is installed a buck in the calcining interlayer, High Temperature Furnaces Heating Apparatus is installed on by the kiln body, High Temperature Furnaces Heating Apparatus is by mouthful tangential quirk that inserts of igniting, there is the cooling bucket decompression awl below in the kiln body, cooling bucket bottom picks out discharge opening, and the top cover upper end picks out smoke outlet.

The principle of the invention is, employing arranges quirk around the kiln periphery, the entad even dispersion of saturating burning of spiraling is propped up in the calcining zone building stones, kiln is inner form combustion position good, be heated evenly, heat radiation and the abundant overall situation of conduction, spiral simultaneously up hot gas flow and the reverse interaction of descending building stones slaking stroke realize comprising the high-effect heat exchange of thermal convection.

The invention has the beneficial effects as follows: on the quirk of calcining zone interlayer, in the calcining interlayer, open burner, and the position cover of corresponding saturating burner is installed a buck in the calcining interlayer, do not push and damage lime block in the calcination process, fuel separates with building stones, equipment operates steadily, reliably, exempt from frequent maintenance, failure rate is low, air-flow crack between the lime block above making is unobstructed, charge level smooth decreasing in the whole stove has kept charge level smooth, in calcination process, high temperature duration and degree of heating ventilation temperature and flow in the quirk are even, improved the quality of quickened lime greatly, final product quality and production capacity height, laid down cost is low, the cycle of building up is short, reduces heat energy consumption, effectively reduce dust discharge, have the considerable energy saving environmental-protection function.

Description of drawings

Fig. 1 is structural representation of the present invention.

Fig. 2 is that the interlayer among the present invention props up sintering structure synoptic diagram.

Reference numeral comprises:

Charging bole 1, top cover 2, decompression awl 3, quirk 4, the mouth 5 of igniting, outer wall 6, dividing plate 7, inwall 8, a buck 9, High Temperature Furnaces Heating Apparatus 10, middle frame 11, discharge opening 12, cooling bucket 13, bucket base slope 14, burner 15 thoroughly.

Embodiment

The invention will be further described below in conjunction with drawings and Examples.

The top cover 2 at kiln body top is installed charging bole 1, kiln body center of inside is erect fixed

decompression awl

3,8 of the external wall 6 of kiln and inwalls form quirk 4,

decompression awl

3 and 8 interlayers of inwall form calcining zone, on the inwall 8 of the quirk 4 of calcining zone interlayer, in the calcining interlayer, open burner 15, and the position cover of corresponding saturating burner 15 is installed a buck 9 in the calcining interlayer, High Temperature Furnaces Heating Apparatus 10 is installed on by the kiln body, High Temperature Furnaces Heating Apparatus 10 is by mouthful 5 tangential quirks 4 that insert of igniting, there is cooling bucket 13 decompression awl 3 belows in the kiln body, cooling bucket 13 bottoms pick out discharge opening 12, and top cover 2 upper ends pick out smoke outlet, and induced draft fan is installed where necessary.

Frame 11 tops during decompression awl 3 bottoms are fixed on, middle frame 11 peripheral localized immobilization have lower through-hole at middle frame 11 peripheries on kiln body inwall.The building stones of firing in the calcining interlayer fall into cooling bucket 13 through this hole.

Middle part horizontal direction stationary barrier 7 in the quirk 4, quirk 4 is divided into upper and lower two-layer, at other 4 High Temperature Furnaces Heating Apparatuss 10 that evenly distribute of installing of kiln body, 2 High Temperature Furnaces Heating Apparatuss 10 of diagonal position are arranged through each Self lighting mouth 5 tangential access quirk 4, respectively ignite mouthful clockwise direction that the overall formation in 5 access quirks, 4 backs is consistent or a counter clockwise direction eddy flow in every layer of quirk 4.

The bucket base slope 14 of inclination is arranged at cooling bucket 13 bottoms.

Decompression awl 3, outer wall 6, dividing plate 7, inwall 8 and cooling bucket 13 are built by laying bricks or stones with refractory brick.

The utlity model has the feature of smoke elimination, dedusting, swingfire, direct combustion, mouthfuls 5 High Temperature Furnaces Heating Apparatus 10 high speed combustion gas flowings are injected circular quirk 4 internal rotation from tangential direction through igniting, pyrotechnics in the quirk 4 is spiraled along quirk 4, and the fiery temperature in the quirk 4 reaches 1150-1200 ℃.

The calcining zone interlayer of every layer of quirk 4 correspondence is equipped with buck 9 the 4-12 layer, the installation of staggering of the buck 9 between upper and lower adjacent layers.Buck 9 of every layer is staggered, building stones are sunk smoothly and uniformly, and suitably support and make that building stones are unlikely closely knitly to be laminated or directly fall into, quirk 4 maximizations increase the heating surface area of building stones, and during blanking, building stones can separate at top two stones of a buck 9, make the material branch solve more even.

An embodiment as a buck 9, between calcining zone interlayer two side, with 2 rectangular refractory brick Open Side Down go up stupefied butt joint arch up into the ridge two ends respectively the embedding frame go into inwall 8 and decompression awl 3 walls, the tri-angle-holed burner 15 that is that this 2 rectangular refractory brick outer end forms on the angle at inwall 8.As seen, this buck 9 can also increase the structural strength of inwall 8 and decompression awl 3, prior can with the fire of quirk 4 saturating burner 15 spaces by triangle with thermal radiation in the calcining zone interlayer on the building stones.

Fall into cooling bucket 13 after the building stones fragmentation after high temperature burns till, continue slaking, namely heat fully evenly conducts in material piece inside and expects that piece thoroughly burns till.

As embodiment, vertical kiln becomes cylindrical, the kiln external diameter is outer wall 6 external diameter 300cm, decompression awl 3 diameter 120cm, quirk 4 wide 40cm, every layer of quirk 4 high 250cm, building stones calcining zone in kiln stops more than 5 hours, stopped 5 hours in cooling bucket 13, the living burning rate from discharge opening 12 dischargings is lower than 3% then,

decompression awl

3 and 8 interlayer width of inwall 60cm.

In above embodiment, do not reach the safety of narration, and field engineering, and the employing prior aries such as other necessary technologies that relate to enforcement, enumerate detailed description no longer successively.

Claims

1. vertical interlayer eddy flow props up the scoria ash furnace, it is characterized in that: the top cover (2) at kiln body top is installed charging bole (1), kiln body center of inside is erect fixed decompression awl (3), form quirk (4) between the external wall of kiln (6) and inwall (8), interlayer forms calcining zone between decompression awl (3) and inwall (8), the inwall (8) that centers on the quirk (4) of calcining zone interlayer is upward opened burner (15) in the calcining interlayer, and the position cover of corresponding saturating burner (15) is installed a buck (9) in the calcining interlayer, High Temperature Furnaces Heating Apparatus (10) is installed on by the kiln body, High Temperature Furnaces Heating Apparatus (10) tangentially inserts quirk (4) by ignite mouthful (5), there is cooling bucket (13) decompression awl (3) below in the kiln body, cooling bucket (13) bottom picks out discharge opening (12), and top cover (2) upper end picks out smoke outlet.

2. vertical interlayer eddy flow as claimed in claim 1 props up the scoria ash furnace, it is characterized in that, decompression awl (3) bottom is fixed on middle frame (11) top, and the peripheral localized immobilization of middle frame (11) has lower through-hole at middle frame (11) periphery on kiln body inwall.

3. vertical interlayer eddy flow as claimed in claim 1 props up the scoria ash furnace, it is characterized in that, middle part horizontal direction stationary barrier (7) in the quirk (4), be divided into quirk (4) upper and lower two-layer, at other 4 High Temperature Furnaces Heating Apparatuss (10) that evenly distribute of installing of kiln body, there are 2 High Temperature Furnaces Heating Apparatuss (10) of diagonal position tangentially to insert quirk (4) through each Self lighting mouth (5) in every layer of quirk (4), overall consistent clockwise direction or the counter clockwise direction eddy flow of forming in mouthful (5) access quirks (4) back of respectively igniting.

4. vertical interlayer eddy flow as claimed in claim 1 props up the scoria ash furnace, it is characterized in that, the bucket base slope (14) of inclination is arranged at cooling bucket (13) bottom.

5. vertical interlayer eddy flow as claimed in claim 1 props up the scoria ash furnace, it is characterized in that, mouthful (5) inject circular quirk (4) internal rotation with High Temperature Furnaces Heating Apparatus (10) high speed combustion gas flowing from tangential direction through igniting, pyrotechnics in the quirk (4) is spiraled along quirk (4), and the fiery temperature in the quirk (4) reaches 1150-1200 ℃.

6. vertical interlayer eddy flow as claimed in claim 1 props up the scoria ash furnace, it is characterized in that, the calcining zone interlayer that every layer of quirk (4) is corresponding is equipped with a buck (9) the 4-12 layer, the installation of staggering of the buck (9) between upper and lower adjacent layers.

7. vertical interlayer eddy flow as claimed in claim 1 props up the scoria ash furnace, it is characterized in that, between calcining zone interlayer two side, with 2 rectangular refractory brick Open Side Down go up stupefied butt joint arch up into the ridge two ends respectively the embedding frame go into inwall (8) and decompression awl (3) wall, tri-angle-holed the be burner (15) of this 2 rectangular refractory brick outer end on inwall (8) formation one angle.

8. vertical interlayer eddy flow as claimed in claim 1 props up the scoria ash furnace, it is characterized in that, falls into cooling bucket (13) after the building stones fragmentation after high temperature burns till, and continues slaking, and namely heat fully evenly conducts in material piece inside and expects that piece thoroughly burns till.

9. vertical interlayer eddy flow as claimed in claim 1 props up the scoria ash furnace, it is characterized in that, vertical kiln becomes cylindrical, and the kiln external diameter is outer wall (6) external diameter 300cm, decompression awl (3) diameter 120cm, the wide 40cm of quirk (4), the high 250cm of every layer of quirk (4), building stones calcining zone in kiln stopped more than 5 hours, stopped 5 hours in cooling bucket (13), living burning rate from discharge opening (12) discharging is lower than 3% then, interlayer width 60cm between decompression awl (3) and inwall (8).