CN106610229A - Rotary kiln vertical preheater - Google Patents
Rotary kiln vertical preheater Download PDFInfo
- Publication number
- CN106610229A CN106610229A CN201611127101.0A CN201611127101A CN106610229A CN 106610229 A CN106610229 A CN 106610229A CN 201611127101 A CN201611127101 A CN 201611127101A CN 106610229 A CN106610229 A CN 106610229A
- Authority
- CN
- China
- Prior art keywords
- preheater
- rotary kiln
- preheating
- preheating zone
- feed
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D13/00—Apparatus for preheating charges; Arrangements for preheating charges
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D13/00—Apparatus for preheating charges; Arrangements for preheating charges
- F27D2013/007—Apparatus for preheating charges; Arrangements for preheating charges using a rotary furnace
Abstract
The invention belongs to the technical field of a rotary kiln, in particular to a rotary kiln vertical preheater. The preheater comprises a preheating chamber, material pushing devices, preheating zones, feed tubes, a bin and a feed hopper. The upper and lower ends of the preheating chamber are respectively provided with the bin and the feed hopper; the bottom of the bin is provided with a plurality of feed openings; a plurality of preheating zones are arranged in the preheating chamber along a circumferential direction; each preheating zone communicates with one feed opening of the bin through one feed tube; and the bottom of each preheating zone is provided with one material pushing device mounted on a preheater housing so as to push the material into the feed hopper. According to the preheater, the pressure resistance of the preheater is reduced, thereby reducing the actual power of a motor of a tail exhaust fan, and the energy saving effect is significant.
Description
Technical field
The invention belongs to rotary kiln technical field, specifically a kind of rotary kiln shaft preheater.
Background technology
Calcining metallurgy lime is to live through four technical equipment epoch in theory；Experienced successively traditional earth kiln, half from
Dynamicization shaft furnace, full-automatic (PLC controls) change shaft furnace and full-automatic (DCS controls) rotary kiln.
Analyze from product quality, rotary kiln production technology is that in current world wide metallurgy lime industry technique is at first
Enter, quality is most stable, the production technology that quality index is best.Despite dressing for absolute advantagess rotary kiln production technology,
Many irrational place is there is in actual production still.At present, for shaft preheater, due to the indoor preheating zone of preheating
Height higher (design bed depth be H1=3250mm), the materialbeds comminution of formation is 4000Pa, to 900KW in operation below
(10kv) tail exhaust blower brings larger power consumption, simultaneously because pressure drag is big, gives back to turn kiln ventilation cause certain
Affect, the negative pressure of kiln tail feed compartment is not enough, form calcining heat in kiln and have an impact；Fuel combustion state and fuel profit are affected simultaneously
With rate, it is impossible to which clean-burning coal dust has been further exacerbated by the formation of " kiln circle ", the drawbacks of bring many to production.
The content of the invention
For the problems referred to above, it is an object of the invention to provide a kind of rotary kiln shaft preheater, to solve existing preheating
The relatively high power consumption and the negative pressure of kiln tail feed compartment that device is brought to the tail exhaust blower in operation below is not enough, forms calcining in kiln
The influential problem of temperature.
To achieve these goals, the present invention is employed the following technical solutions：
A kind of rotary kiln shaft preheater, including preheating chamber, material-pulling device, preheating zone, tremie pipe, feed bin and blanking leakage
Bucket, the upper and lower end of wherein preheating chamber are respectively equipped with feed bin and blanking funnel, and the bottom of the feed bin is provided with multiple feed openings, institute
State that preheating is indoor circumferentially arranged with multiple preheating zones, each preheating zone is connected with a feed opening of feed bin by a tremie pipe,
The bottom of each preheating zone is provided with a material-pulling device being arranged on preheater shell, for material is pushed blanking funnel
It is interior.
The upper end of the preheating zone is provided with cervical region, and the upper end of the cervical region is provided with feed opening and air vent, the tremie pipe
Exhaust space is left between the inwall for inserting the cervical region of the preheating zone, the outer wall of the tremie pipe and the cervical region, it is described pre-
The air vent in the torrid zone is connected with exhaust piping.
The lower port of the tremie pipe is horn-like.
The part that the tremie pipe is located on the outside of preheating zone is outward-dipping.
The material-pulling device includes push rod, cuts somebody's hair and driving means, wherein cut somebody's hair that the bottom of the preheating zone is arranged at, institute
State push rod be inserted in the pilot hole that the preheater shell is provided with, and medial extremity be connected with cutting somebody's hair, the driving means are pacified
The outside and outfan for being mounted in the preheater shell is connected with the outboard end of push rod, and the driving means are driven by push rod
Cut somebody's hair and do reciprocating linear motion, so as to realize the push of material.
The driving means include swing arm and hydraulic cylinder, and wherein swing arm and hydraulic cylinder is arranged on the outside of preheater shell,
The upper end of the swing arm is hinged with preheater shell, and lower end is hinged with the output shaft of hydraulic cylinder, outboard end and the pendulum of the push rod
Arm is hinged, and the Driven by Hydraulic Cylinder swing arm swings, and the swing arm promotes push rod for linear motion.
Flue-dust retainer is provided with below pilot hole on the preheater shell.
Charge door is provided with above the feed bin.
The outside of the preheating chamber is circumferentially arranged with observation platform, corresponding with each preheating zone on the preheater shell
Position is respectively equipped with an observation window.
AD is provided with the top of the preheating chamber and rain is taken.
Advantages of the present invention and beneficial effect are：
1. the present invention and then reduces tail air draft by reducing thickness of feed layer inside preheater to reduce preheater pressure drag
The motor actual power of machine, energy-saving effect are notable.
2. the present invention improves revolution kiln ventilation, improves the efficiency of combustion of fuel, has saved the energy, while improve
Preheating temperature in preheater, material resolution ratio are lifted to 32% by 20%, improve product quality and yield.Improve fuel utilization
After rate, kiln flame is easily formed long flame, so to the high-temperature region in kiln by it is past compare concentration and be changed into less collect
In, thermal-flame is reduced to the thermal shock of resistance to material and thermic load in kiln, improve the service life of resistance to material, reduce equipment dimension
Repair expense；
Description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is enlarged drawing at Y in Fig. 1；
Fig. 3 is the structural representation of preheating chamber in the present invention；
Top views of the Fig. 4 for Fig. 3；
Fig. 5 is the structural representation of push rod device in the present invention.
Wherein：1 is rotary kiln, and 2 is observation platform, and 3 is preheating chamber, and 4 is material-pulling device, and 41 is swing arm, and 42 is push rod, and 43 are
Hydraulic cylinder, 44 to cut somebody's hair, and 5 is preheating zone, and 6 is tremie pipe, and 7 is exhaust piping, and 8 is feed bin, and 9 is charge door, and 10 leak for blanking
Bucket, 11 is preheater shell, and 12 is AD, and 13 is air adjustment mouth, and 14 is platform, and 15 is flue-dust retainer, and 16 is heat proof material,
M is rotary kiln hot blast, and H is the height of preheating zone.
Specific embodiment
In order that the object, technical solutions and advantages of the present invention are clearer, below in conjunction with the accompanying drawings with specific embodiment pair
The present invention is described in detail.
As Figure 1-4, a kind of rotary kiln shaft preheater that the present invention is provided, including it is preheating chamber 3, material-pulling device 4, pre-
The torrid zone 5, tremie pipe 6, feed bin 8 and blanking funnel 10, the upper and lower end of wherein preheating chamber 3 are respectively equipped with feed bin 8 and blanking funnel
10, the bottom of the feed bin 8 is provided with multiple feed openings, circumferentially arranged with multiple preheating zones 5 in the preheating chamber 3, each preheating
Connected with a feed opening of feed bin 8 by a tremie pipe 6 with 5, the bottom of each preheating zone 5 is provided with one and is arranged on preheater
Material-pulling device 4 on housing 11, for material is pushed in blanking funnel 10.
The top of the feed bin 8 is provided with charge door 9, and the blanking funnel 10 is connected with the charging aperture of rotary kiln 1.
As shown in Fig. 2 the upper end of the preheating zone 5 is provided with cervical region, to reduce thickness of feed layer inside preheater.The cervical region
Upper end be provided with feed opening and air vent, the tremie pipe 6 inserts the cervical region of the preheating zone 5, the outer wall of the tremie pipe 6 with
Exhaust space is left between the inwall of the cervical region, the air vent of the preheating zone 5 is connected with exhaust piping 7.Reduce preheater
Internal thickness of feed layer
The lower port of the tremie pipe 6 for horn-like, so as to blanking it is unimpeded.The tremie pipe 6 is located on the outside of preheating zone 5
Part is outward-dipping.
As shown in figure 5, the material-pulling device 4 include push rod 42, cut somebody's hair 44 and driving means, wherein cutting somebody's hair 44 is arranged at institute
State the bottom of preheating zone 5, the push rod 42 is inserted in the pilot hole that the preheater shell 11 is provided with, and medial extremity with push away
44 connections, the driving means are arranged on the outside of the preheater shell 11 and outfan is connected with the outboard end of push rod 42
Connect, the driving means drive to cut somebody's hair by push rod 42 and 44 do reciprocating linear motion, so as to realize the push of material.
The driving means include swing arm 41 and hydraulic cylinder 43, and wherein swing arm 41 and hydraulic cylinder 43 is arranged on preheater shell
11 outside, upper end and the preheater shell 11 of the swing arm 41 are hinged, and lower end is hinged with the output shaft of hydraulic cylinder 43, described to push away
The outboard end of bar 42 is hinged with swing arm 41, and the hydraulic cylinder 43 drives swing arm 41 to swing, and the swing arm 41 promotes push rod 42 to make directly
Line is moved.
Flue-dust retainer 15 is provided with below pilot hole on the preheater shell 11.
The outside of the preheating chamber 3 circumferentially arranged with observation platform 2, with each 5 phase of preheating zone on the preheater shell 11
Corresponding position is respectively equipped with an observation window.The top of the preheating chamber 3 is provided with AD 12 and rain is taken.
In one embodiment of the invention, the height H=2750mm of preheating zone 9.
The top of the preheating zone 9 is provided with cervical region, so that the height of preheating zone 9 is increased less than the height of preheating chamber 3
The upper gas space volume of material, serves certain gravity depositing dust effect, and the dedusting for alleviating follow-up sack cleaner is born
Lotus, reduces the abrasion of cloth bag, extends the cloth bag replacement cycle of sack cleaner, saves maintenance cost.Improve preheater
Outlet temperature increase heat content, for the exhaust gas utilization of next step improves temperature.
Due to the change of the height of the bed of material in preheating zone 9, also increased therewith by the flow velocity of the hot-air flow of the bed of material.Raw material
In some tiny dust granules be not brought in the rotary kiln of next operation in the feed mixing as before,
In 1250 DEG C of high-temperature calcination environment, become to melt liquid phase substance, and the resistance to material of rotary kiln carries out a series of chemical reaction, formed(calcium silicates series),(calcium aluminate series) secondary reactant, exacerbates " dross " phenomenon, to producing
What quality and technique productions were all brought has a strong impact on.The present invention solves the problems referred to above.
Inside present invention reduction preheater after thickness of feed layer, preheater pressure drag is reduced, and then reduces tail exhaust blower
Motor actual power, energy-saving effect is notable.
Following table is the Data Comparison table of existing preheating in rotary kiln device and the various functions of the present invention：
As can be seen from the above table, the present invention improves revolution kiln ventilation, improves the efficiency of combustion of fuel, has saved energy
Source, while improve preheating temperature in preheater, material resolution ratio is lifted to 32% by 20%, improves product quality and product
Amount.After improving fuel availability, kiln flame is easily formed long flame, so compares collection by past to the high-temperature region in kiln
In be changed into and less concentrate, reduce thermal-flame to the thermal shock of resistance to material and thermic load in kiln, improve the use longevity of resistance to material
Life, reduces maintenance of equipment expense；
Present invention improves the cleaning gas degree in kiln, reduces turbidity in kiln, the burning velocity of flame is accelerated, is carried
The high ignition temperature of flame；Combustion process due to exacerbating Pulverized Coal, when making pulverized coal particle fall on the resistance to material of rotary kiln
Completely burn out, reduced the probability of happening of " dross " failure in rotary kiln.
During with " scaffold " technology trouble of pre-treatment preheating zone, as bed depth is big, angle also bad grasp is being processed
During failure " scaffold ", difficulty is very big, and in addition due to the powerful negative pressure that bed of material height brings, the person's of giving people physical safety also brings very
Big potential safety hazard；
Now due to bed depth is reduced, negative pressure is reduced, and when processing " scaffold " failure, difficulty is also reduced a lot.
Embodiments of the present invention are the foregoing is only, protection scope of the present invention is not intended to limit.It is all in the present invention
Spirit and principle within made any modification, equivalent substitution and improvements, extension etc., be all contained in protection scope of the present invention
It is interior.
Claims (10)
1. a kind of rotary kiln shaft preheater, it is characterised in that including preheating chamber (3), material-pulling device (4), preheating zone (5), under
Expects pipe (6), feed bin (8) and blanking funnel (10), the upper and lower end of wherein preheating chamber (3) are respectively equipped with feed bin (8) and blanking funnel
(10), the bottom of the feed bin (8) is provided with multiple feed openings, the preheating chamber (3) circumferentially arranged with multiple preheating zones (5),
Each preheating zone (5) is connected with a feed opening of feed bin (8) by a tremie pipe (6), and the bottom of each preheating zone (5) is provided with
One material-pulling device (4) being arranged on preheater shell (11), for material is pushed in blanking funnel (10).
2. rotary kiln shaft preheater according to claim 1, it is characterised in that the upper end of the preheating zone (5) is provided with
Cervical region, the upper end of the cervical region are provided with feed opening and air vent, and the tremie pipe (6) inserts the cervical region of the preheating zone (5), institute
Exhaust space, the air vent and waste gas of the preheating zone (5) are left between the inwall of the outer wall and the cervical region of stating tremie pipe (6)
Pipeline (7) is connected.
3. rotary kiln shaft preheater according to claim 2, it is characterised in that the lower port of the tremie pipe (6) is
It is horn-like.
4. rotary kiln shaft preheater according to claim 3, it is characterised in that the tremie pipe (6) is positioned at preheating zone
(5) part on the outside of is outward-dipping.
5. rotary kiln shaft preheater according to claim 1, it is characterised in that the material-pulling device (4) is including push rod
(42), cut somebody's hair (44) and driving means, wherein cut somebody's hair (44) be arranged at the bottom of the preheating zone (5), the push rod (42) is inserted
In the pilot hole being provided with located at the preheater shell (11), and medial extremity with cut somebody's hair (44) be connected, the driving means are pacified
The outside and outfan for being mounted in the preheater shell (11) is connected with the outboard end of push rod (42), and the driving means pass through
Push rod (42) drive cut somebody's hair (44) do reciprocating linear motion, so as to realize the push of material.
6. rotary kiln shaft preheater according to claim 5, it is characterised in that the driving means include swing arm (41)
With hydraulic cylinder (43), wherein swing arm (41) and hydraulic cylinder (43) are installed in the outside of preheater shell (11), the swing arm (41)
Upper end be hinged with preheater shell (11), lower end is hinged with the output shaft of hydraulic cylinder (43), the outboard end of the push rod (42)
It is hinged with swing arm (41), the hydraulic cylinder (43) drives swing arm (41) to swing, the swing arm (41) promotes push rod (42) to make straight line
Motion.
7. rotary kiln shaft preheater according to claim 5, it is characterised in that leading on the preheater shell (11)
Flue-dust retainer (15) is provided with to below hole.
8. rotary kiln shaft preheater according to claim 1, it is characterised in that be provided with above the feed bin (8) plus
Material mouth (9).
9. rotary kiln shaft preheater according to claim 1, it is characterised in that the outside of the preheating chamber (3) is along week
To observation platform (2) is provided with, on the preheater shell (11), the position corresponding with each preheating zone (5) is respectively equipped with a sight
Examine window.
10. rotary kiln shaft preheater according to claim 1, it is characterised in that be provided with the top of the preheating chamber (3)
AD (12) and rain are taken.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611127101.0A CN106610229A (en) | 2016-12-07 | 2016-12-07 | Rotary kiln vertical preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611127101.0A CN106610229A (en) | 2016-12-07 | 2016-12-07 | Rotary kiln vertical preheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106610229A true CN106610229A (en) | 2017-05-03 |
Family
ID=58636674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611127101.0A Pending CN106610229A (en) | 2016-12-07 | 2016-12-07 | Rotary kiln vertical preheater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106610229A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108438561A (en) * | 2018-02-12 | 2018-08-24 | 董武斌 | A kind of device preventing preheater warehouse ramming material |
| CN110940195A (en) * | 2019-12-27 | 2020-03-31 | 中冶焦耐(大连)工程技术有限公司 | Upper material layer height adjusting device and method of rotary lime kiln preheater |
| CN116659252A (en) * | 2023-07-21 | 2023-08-29 | 山西昌祥高钙石灰股份有限公司 | Flue gas negative pressure control system of rotary kiln |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB731654A (en) * | 1953-11-03 | 1955-06-08 | Smidth & Co As F L | Improvements in apparatus for heating powdered or granular materials by means of gases |
| CN101875538A (en) * | 2010-06-01 | 2010-11-03 | 莫振涛 | Shaft kiln with preheater and method for preparing lime by same |
| CN201858898U (en) * | 2010-10-15 | 2011-06-08 | 夏成法 | Material guiding device of vertical pre-heater |
| CN201892430U (en) * | 2010-12-10 | 2011-07-06 | 苏根华 | Novel energy-saving and environmentally-friendly vertical preheater with twelve push heads |
| CN201990497U (en) * | 2011-03-03 | 2011-09-28 | 新兴能源装备股份有限公司 | Calcined dolomite production machine |
| CN206291735U (en) * | 2016-12-07 | 2017-06-30 | 丹东同合高新科技有限公司 | Rotary kiln shaft preheater |
-
2016
- 2016-12-07 CN CN201611127101.0A patent/CN106610229A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB731654A (en) * | 1953-11-03 | 1955-06-08 | Smidth & Co As F L | Improvements in apparatus for heating powdered or granular materials by means of gases |
| CN101875538A (en) * | 2010-06-01 | 2010-11-03 | 莫振涛 | Shaft kiln with preheater and method for preparing lime by same |
| CN201858898U (en) * | 2010-10-15 | 2011-06-08 | 夏成法 | Material guiding device of vertical pre-heater |
| CN201892430U (en) * | 2010-12-10 | 2011-07-06 | 苏根华 | Novel energy-saving and environmentally-friendly vertical preheater with twelve push heads |
| CN201990497U (en) * | 2011-03-03 | 2011-09-28 | 新兴能源装备股份有限公司 | Calcined dolomite production machine |
| CN206291735U (en) * | 2016-12-07 | 2017-06-30 | 丹东同合高新科技有限公司 | Rotary kiln shaft preheater |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108438561A (en) * | 2018-02-12 | 2018-08-24 | 董武斌 | A kind of device preventing preheater warehouse ramming material |
| CN110940195A (en) * | 2019-12-27 | 2020-03-31 | 中冶焦耐(大连)工程技术有限公司 | Upper material layer height adjusting device and method of rotary lime kiln preheater |
| CN116659252A (en) * | 2023-07-21 | 2023-08-29 | 山西昌祥高钙石灰股份有限公司 | Flue gas negative pressure control system of rotary kiln |
| CN116659252B (en) * | 2023-07-21 | 2023-10-24 | 山西昌祥高钙石灰股份有限公司 | Flue gas negative pressure control system of rotary kiln |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202885493U (en) | Gas energy-saving type expanding equipment for perlite | |
| CN103075727B (en) | High-efficiency and environment-friendly coal-fired system for vertical boiler with bottom-built burner | |
| CN102180496B (en) | Device for producing alumina clinker by semi-dry process | |
| CN104229855B (en) | Utilize electricity generation boiler or the technique of sintering device flue gas on-line heating oxidation sweetening ash | |
| CN106610229A (en) | Rotary kiln vertical preheater | |
| CN207738664U (en) | A kind of limestone calcination device | |
| CN105648222A (en) | Rod casting system and method for recycling and smelting small materials of aluminum scraps | |
| CN206352122U (en) | A kind of cement production system | |
| CN102992661A (en) | Beam type heat storage lime kiln | |
| CN203007146U (en) | Beam type heat accumulation lime kiln | |
| CN203163513U (en) | Tail gas recovery device of sealed calcium carbide furnace | |
| CN202156936U (en) | Sintering rotary kiln device using coal ash to produce alumina in low temperature-ammonia method | |
| CN104446017A (en) | Barrier wall type calcining device | |
| CN202016883U (en) | Device for producing alumina clinker in semidry method | |
| CN206291735U (en) | Rotary kiln shaft preheater | |
| CN203534158U (en) | Energy-saving environment-friendly full-automatic electric heating rotary kiln | |
| CN211311301U (en) | Glass bead production system | |
| CN104964572A (en) | Product waste heat ring-shaped partition-type recovery system and method for pellet calcining rotary kiln | |
| CN104294036B (en) | Iron ore pellet roasting device | |
| CN208296584U (en) | A kind of burning facility producing flying dust chelating agent | |
| CN101066864B (en) | Dry process artificial mullite producing line | |
| CN207943888U (en) | The equipment that nepheline preheats predecomposition dry sintering production alumina clinker | |
| CN102674716A (en) | Cyclic calcining and decomposing process for powdered materials | |
| CN211971788U (en) | Device capable of improving content of molybdenum trioxide in molybdenum roasting finished product | |
| CN206139198U (en) | Inactivation oil dead catalyst microwave takes off device of charcoal fast |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170503 |
|
| WD01 | Invention patent application deemed withdrawn after publication |