CN203568975U - Sleeve-type double-hearth shaft kiln - Google Patents
Sleeve-type double-hearth shaft kiln Download PDFInfo
- Publication number
- CN203568975U CN203568975U CN201320731484.8U CN201320731484U CN203568975U CN 203568975 U CN203568975 U CN 203568975U CN 201320731484 U CN201320731484 U CN 201320731484U CN 203568975 U CN203568975 U CN 203568975U
- Authority
- CN
- China
- Prior art keywords
- kiln
- thorax
- inner sleeve
- shaft furnace
- inner sleeves
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000001681 protective effect Effects 0.000 claims abstract description 18
- 238000001354 calcination Methods 0.000 claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 4
- 239000011819 refractory material Substances 0.000 claims abstract description 4
- 239000010959 steel Substances 0.000 claims abstract description 4
- 210000000038 chest Anatomy 0.000 claims description 67
- 239000000446 fuel Substances 0.000 claims description 22
- 238000001816 cooling Methods 0.000 claims description 20
- 239000011449 brick Substances 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 abstract description 2
- 235000011941 Tilia x europaea Nutrition 0.000 abstract description 2
- 239000004571 lime Substances 0.000 abstract description 2
- 229910000514 dolomite Inorganic materials 0.000 abstract 1
- 239000010459 dolomite Substances 0.000 abstract 1
- 230000005611 electricity Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 9
- 239000002994 raw material Substances 0.000 description 8
- 238000002485 combustion reaction Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000002912 waste gas Substances 0.000 description 4
- 238000004873 anchoring Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004449 solid propellant Substances 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Images
Landscapes
- Muffle Furnaces And Rotary Kilns (AREA)
- Furnace Details (AREA)
Abstract
The utility model relates to the field of calcining kilns and in particular relates to a sleeve type double-hearth shaft kiln. The shaft kiln is characterized in that inner sleeves are arranged in the centers of two kiln hearths respectively; the upper ends of the inner sleeves are hinged with the tops of the kiln hearths; the ends of axial positioning clamps are hinged with shells of the kiln hearths; the inner sleeves comprise steel structures from bottom to top; protective jackets made from refractory materials are built outside the inner sleeves; air passages are arranged inside the inner sleeves. The specifications of the shaft kiln are only related to the regional areas of ring-shaped sections. The heights of a preheating zone, a calcining zone and the like of the kiln body seldom change with change of the specifications of the kiln. Compared with the prior art, the shaft kiln has the beneficial effects that the resistance loss of the kiln body is small; heat distribution unevenness in the calcining process is improved; the product has good quality; the shaft kiln is beneficial to electricity conservation, can be used for solving the problem of large scale of lime and dolomite double-hearth shaft kilns and is suitable for newly building, rebuilding and expanding process designs with specification that the daily yield is more than 600 tons and even 1000 tons.
Description
Technical field
The utility model relates to lumpy material roasting kiln field, particularly a kind of telescopic pair of thorax shaft furnace.
Background technology
General shaft furnace is along with the increase of output, its geometrical dimension should increase according to a certain percentage, with regard to two thorax shaft furnaces, because the high-temperature gas of roasting band is directly by periphery exhaust or air inlet, this makes high-temperature gas flowing downward or upwards in mobile process, away from roasting band lower central position, cause the not enough underburnt that produces of this position heat supply, the larger phenomenon of equivalent diameter of kiln is more obvious, in order to compensate this defect, can only increase roasting band height, therefore the kiln height of existing shaft furnace is relevant with kiln thorax cross section diameter size, shaft furnace specification generally need keep aspect ratio constant.
Like this; the problem of bringing is that the too high drag losses of kiln body is large, the long quality product that affects of calorie distribution inequality, material roasting time of center and periphery; along with the cantilevered spray gun of increase and the installation difficulty of spray gun protective guard of kiln thorax diameter are also very large, hindered shaft furnace to large scale development.
Summary of the invention
The purpose of this utility model is to provide a kind of telescopic pair of thorax shaft furnace, overcome the deficiencies in the prior art, optimize the distributed architecture of material in kiln thorax, improve the calorie distribution uneven phenomenon in roasting process, the height of shaft furnace is not changed with the specifications vary of kiln, make shaft furnace become possibility to large scale development.
For achieving the above object, the utility model is achieved through the following technical solutions:
Telescopic pair of thorax shaft furnace, comprise symmetrical two kiln thoraxes and Fuel lance, in kiln thorax, be respectively from the bottom to top preheating zone, roasting band and cooling zone, two kiln thoraxes are connected by connecting passage with the junction of cooling zone at calcining zone, Fuel lance outlet is arranged in the cross section of kiln thorax, described Liang Geyaotang center is respectively equipped with inner sleeve, inner sleeve lower end is fixed on the drawing mechanism of kiln thorax bottom, the axial location card of inner sleeve upper end and kiln thorax top is hinged, and the termination of axial location card and kiln thorax housing are hinged; The top of kiln thorax is provided with annular distributor, above the inner sleeve below annular distributor, is provided with tripper;
Described inner sleeve is steel structure body from bottom to top; the protective sleeve that has refractory materials is built in outside at inner sleeve; the inside of inner sleeve is air passageways; inner sleeve and kiln thorax inwall form annular section; the specification size of shaft furnace is only relevant with annular section region area size, and the height of kiln body preheating zone and roasting band etc. does not change with the specifications vary of kiln substantially.
In described drawing mechanism, be provided with many discharging machines, drawing mechanism below is provided with discharge bucket.
What in the air passageways of described inner sleeve inside, pass into is combustion air or cooling air.
Described Fuel lance is according to the annular section shape of kiln thorax, and by two rings or the above evenly distributed layout of two rings, the protective guard of Fuel lance is fixed on kiln shell and/or inner sleeve from inside to outside.
Between brick body on the protective sleeve of described inner sleeve, adopt convex-concave structure to be mutually interlocked.
In described connecting passage, space mounting has interchanger.
Compared with prior art, the beneficial effects of the utility model are: optimize the distributed architecture of material in kiln thorax, kiln body drag losses is little, the calorie distribution of Yao Tang center and periphery is even, improve the calorie distribution uneven phenomenon in roasting process, good product quality, be conducive to saves energy, the height of shaft furnace is not changed with the specifications vary of kiln, convenient Fuel lance and the protective guard installed, solved lime, the two thorax shaft furnace maximization problems of rhombspar, be applicable to newly-built, reconstruction, enlarging, specification is greater than more than 600 tons for producing daily, or even in technological design more than daily output kiloton.
Accompanying drawing explanation
Fig. 1 is the utility model embodiment section structure schematic diagram;
Fig. 2 is the utility model embodiment two dimensional structure schematic diagram;
Fig. 3 is the utility model inner sleeve protective sleeve embodiment brick body interlocking pattern section structure schematic diagram;
Fig. 4 is the utility model inner sleeve protective sleeve embodiment brick body interlocking pattern two dimensional structure schematic diagram.
In figure: 1-kiln thorax 2-Fuel lance 3-connecting passage 4-inner sleeve 5-drawing mechanism 6-axial location card 7-annular distributor 8-tripper 9-protective sleeve 10-discharge bucket 11-shaft furnace FRAME FOUNDATION 12-brick body 13-anchoring piece 14-insulating lining
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
See Fig. 1, Fig. 2, telescopic pair of thorax shaft furnace example structure schematic diagram of the utility model, comprise symmetrical two kiln thoraxes 1 and Fuel lance 2, in kiln thorax 1, be respectively from the bottom to top preheating zone, roasting band and cooling zone, two kiln thoraxes 1 are connected by connecting passage 3 with the junction of cooling zone at calcining zone, Fuel lance 2 outlets are arranged in the cross section of kiln thorax 1, two kiln thorax 1 centers are respectively equipped with inner sleeve 4, inner sleeve 4 lower ends are fixed on the drawing mechanism 5 of kiln thorax bottom, the axial location card 6 of inner sleeve 4 upper ends and kiln thorax top is hinged, the termination of axial location card 6 and kiln thorax 1 housing are hinged, the top of kiln thorax 1 is provided with annular distributor 7, above the inner sleeve 4 below annular distributor 7, is provided with tripper 8,
The virtual height substantially constant of shaft furnace, specification size is only with annular region area change, the specification size that is shaft furnace is only relevant with annular region size, the height of kiln body preheating zone and roasting band etc. does not substantially change this feature with the specifications vary of kiln and only has the shaft furnace with inner sleeve just to have, and therefore fluid resistance is little.In drawing mechanism 5, be provided with many desk fans shape discharging machine, drawing mechanism 5 belows are provided with discharge bucket 10, and drawing mechanism is by integral hoisting in shaft furnace FRAME FOUNDATION 11, and this device in material, also carries the load of inner sleeve 4 and protective sleeve 9 in carrying kiln.In the air passageways of inner sleeve 4 inside, can need to pass into combustion air or cooling air according to technique.
Fuel lance 2 is according to the annular section shape of kiln thorax; from inside to outside by two rings or the above evenly distributed layout of two rings; the problems such as the protective guard of Fuel lance 2 is fixed on kiln shell and/or inner sleeve, has solved large-scale shaft furnace spray gun protective guard single-cantilever oversize, insecure.
The protective sleeve of seeing Fig. 3, Fig. 4 inner sleeve is comprised of brick body 12, anchoring piece 13 and insulating lining 14; between brick body 12 on protective sleeve, adopt convex-concave structure to be mutually interlocked; by anchoring piece 13, brick body 12 and insulating lining 14 are connected together; and with inner sleeve 4 outer walls be welded into as a whole, to guarantee the normal work of protective sleeve 9 and to increase the service life.
Enough spacious in connecting passage 3 spaces, can mounting heat exchanger, waste gas is declined or rise evenly, hot flue gas is difficult for bias current, and connecting passage top all adopts cast structure, easy construction and good airproof performance, solved large-scale shaft furnace exhaust steam passage wide, the problem that difficulty is large is built at top by laying bricks or stones.
During production, two are provided with the kiln thorax of inner sleeve, by reversing system, reach alternately heating, exchange at regular intervals the function of a kiln thorax, and a kiln thorax heats once every one-period.During production, need Wingdale or rhombspar (hereinafter to be referred as raw material) the material piece of the load weighted release mesh of calcining through the tripper at this kiln thorax top, to send in annular region again from the distributor at a kiln thorax top, in calcination process, during heat supply, fuel is sent into by another kiln thorax top, by being embedded in the Fuel lance in raw material, fuel is evenly distributed on the ring kiln thorax section of bottom, preheating zone, combustion air is sent into kiln inner top with Root's blower from the inner sleeve bottom of this kiln thorax, the combustion air that passes into two kiln thoraxes adopts the control of commutation valve plate, according to the needs of each commutation cycle, to calcining thorax, pass into combustion air or cooling air, preheating thorax is with cooling its inner sleeve of inner sleeve cooling blower arranging separately, to extend the work-ing life of inner sleeve.Through preheating zone and raw material heat exchange, obtain after high temperature, enter calcining zone and fuel mix afterfire heat release and make raw material obtain fast decoupled, now, the high-temperature flue gas and the raw material that in calcining kiln thorax, produce all flow downward along annular section, this and stream heating, can make the hottest flame contact with raw material and complete calcining.And stream heating can reach very high rate of heat exchange when calcining zone is started and not make finished product burning.Pass the air-flow (waste gas) of calcining zone and converge from the cooling air of cooling zone, after communicating passage spacious between two kiln thoraxes with the calcining zone, the preheating zone that enter this kiln thorax together with the cooling air of another kiln thorax (preheating thorax), with the material counter-current flow in this kiln thorax, in preheating zone and raw material, carry out a large amount of heat exchanges, waste gas is discharged equably from the top of this kiln thorax after being cooled to lower temperature, after dedusting, by induced-draft fan, enters atmosphere.The finished product of having calcined enters cooling zone and carries out cooling.Cooling air feeds from the bottom of two kiln thoraxes simultaneously, carries out counterflow heat exchange with the material in cooling zone annular section region, and the drawing mechanism of cooling good finished product at the bottom of by kiln draws off.
The utility model is applicable to the differential larger Wingdale of granularity or rhombspar raw material, also can use solid fuel, the geseous fuel of liquid fuel and various calorific values.When using geseous fuel, need to configure the safe operating device of geseous fuel necessity, there is very wide application prospect.
Claims (5)
1. telescopic pair of thorax shaft furnace, comprise symmetrical two kiln thoraxes and Fuel lance, in kiln thorax, be respectively from the bottom to top preheating zone, roasting band and cooling zone, two kiln thoraxes are connected by connecting passage with the junction of cooling zone at calcining zone, Fuel lance outlet is arranged in the cross section of kiln thorax, it is characterized in that, described Liang Geyaotang center is respectively equipped with inner sleeve, inner sleeve lower end is fixed on the drawing mechanism of kiln thorax bottom, the axial location card of inner sleeve upper end and kiln thorax top is hinged, and the termination of axial location card and kiln thorax housing are hinged; The top of kiln thorax is provided with annular distributor, above the inner sleeve below annular distributor, is provided with tripper; Described inner sleeve is steel structure body from bottom to top, in the outside of inner sleeve, builds the protective sleeve that has refractory materials, and the inside of inner sleeve is air passageways, and inner sleeve and kiln thorax inwall form annular section.
2. telescopic pair of thorax shaft furnace according to claim 1, is characterized in that, is provided with many discharging machines in described drawing mechanism, and drawing mechanism below is provided with discharge bucket.
3. telescopic pair of thorax shaft furnace according to claim 1; it is characterized in that; described Fuel lance is according to the annular section shape of kiln thorax, and by two rings or the above evenly distributed layout of two rings, the protective guard of Fuel lance is fixed on kiln shell and/or inner sleeve from inside to outside.
4. telescopic pair of thorax shaft furnace according to claim 1, is characterized in that, between the brick body on the protective sleeve of described inner sleeve, adopts convex-concave structure to be mutually interlocked.
5. telescopic pair of thorax shaft furnace according to claim 1, is characterized in that, in described connecting passage, space mounting has interchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320731484.8U CN203568975U (en) | 2013-11-18 | 2013-11-18 | Sleeve-type double-hearth shaft kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320731484.8U CN203568975U (en) | 2013-11-18 | 2013-11-18 | Sleeve-type double-hearth shaft kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203568975U true CN203568975U (en) | 2014-04-30 |
Family
ID=50536719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320731484.8U Expired - Lifetime CN203568975U (en) | 2013-11-18 | 2013-11-18 | Sleeve-type double-hearth shaft kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203568975U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103601376A (en) * | 2013-11-18 | 2014-02-26 | 中冶焦耐工程技术有限公司 | Sleeve type double-hearth shaft kiln |
| CN104230189A (en) * | 2014-07-24 | 2014-12-24 | 石家庄新华能源环保科技股份有限公司 | Double-hearth kiln with low power consumption |
-
2013
- 2013-11-18 CN CN201320731484.8U patent/CN203568975U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103601376A (en) * | 2013-11-18 | 2014-02-26 | 中冶焦耐工程技术有限公司 | Sleeve type double-hearth shaft kiln |
| CN103601376B (en) * | 2013-11-18 | 2015-04-15 | 中冶焦耐工程技术有限公司 | Sleeve type double-hearth shaft kiln |
| CN104230189A (en) * | 2014-07-24 | 2014-12-24 | 石家庄新华能源环保科技股份有限公司 | Double-hearth kiln with low power consumption |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103601376B (en) | Sleeve type double-hearth shaft kiln | |
| CN106111889B (en) | A kind of high temperature regeneration Sand Cooling System and exhaust heat recovering method | |
| CN101857383A (en) | Beam limekiln | |
| CN104359321B (en) | A kind of vertical cement chamotte cooler | |
| CN201621949U (en) | Externally-heated coal reducing rotary kiln | |
| CN102878808B (en) | Series connection industrial kiln | |
| CN103803567A (en) | Continuous production device for calcining and whitening black talc and production process thereof | |
| CN203568975U (en) | Sleeve-type double-hearth shaft kiln | |
| CN101382286B (en) | Air flow circle alternating and equalization injection combustor for stabilizing flame by pre-mixing | |
| CN204690029U (en) | The hotblast stove of a kind of coal gas and air gap air film impingement mix preheated burning | |
| CN104891831B (en) | Energy-saving environment-friendly active lime roasting shaft kiln | |
| CN205874232U (en) | Burning roof beam of gas -cooled | |
| CN111233351B (en) | Double-hearth kiln and calcination method | |
| CN202928349U (en) | Series-connection industrial furnace | |
| CN104496207B (en) | Heat storage type lime rotary kiln | |
| CN203163478U (en) | Novel energy-saving kiln | |
| CN204265644U (en) | Heat storage type lime rotary kiln | |
| CN201155919Y (en) | Cement rotary kiln using coal gas as fuel | |
| CN108168292B (en) | Multifunctional environment-friendly BSK sintering technology shaft kiln and use method thereof | |
| CN104232929B (en) | A kind of higher-grade composition brass refining furnace system | |
| CN202182629U (en) | Gas top combustion type high temperature energy saving interlink kiln | |
| CN202208690U (en) | Air circulation system for calcining compartment of sleeve kiln | |
| CN212451210U (en) | Double-chamber kiln | |
| CN201962308U (en) | High blast temperature hot blast heater with self-preheating device for air | |
| CN211367425U (en) | Three-chamber shaft kiln |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180904 Address after: 116085 128 high energy street, Qixian Ling high tech Industrial Park, Dalian, Liaoning Patentee after: ACRE COKING & REFRACTORY ENGINEERING CONSULTING CORPORATION (DALIAN), MCC Address before: 116085 128 high energy street, Qixian Ling high tech Industrial Park, Dalian, Liaoning Patentee before: ACRE COKING & REFRACTORY ENGINEERING CONSULTING CORPORATION, MCC |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140430 |
|
| CX01 | Expiry of patent term |