CN2179563Y - Verticle drum preheater for cement revolving kiln - Google Patents
Verticle drum preheater for cement revolving kiln Download PDFInfo
- Publication number
- CN2179563Y CN2179563Y CN 93233110 CN93233110U CN2179563Y CN 2179563 Y CN2179563 Y CN 2179563Y CN 93233110 CN93233110 CN 93233110 CN 93233110 U CN93233110 U CN 93233110U CN 2179563 Y CN2179563 Y CN 2179563Y
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- rotary kiln
- cylindrical shell
- preheater
- tube
- cement
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- Expired - Fee Related
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- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
The utility model introduces a vertical drum preheater for cement rotary kiln (accompanying diagram 1), composed of a cylinder, two-stage gas rising pipes, two-stage preheating whirlwind cylinders, a dispensing cone, etc. The utility model is characterized in that two-stage preheating whirlwind cylinders are connected in series, and two chokes, the dispensing cone, an expansion barn and a dispensing plate are arranged in a vertical cylinder; the retention time of cement raw material in the vertical cylinder preheater is sufficiently extended; hot smoke gas rising from a smokebox at the tail of the rotary kiln can be sufficiently used for heating cement raw material; the energy consumption for producing cement is reduced, and the production cost is reduced.
Description
The utility model relates to a kind of cement rotary kiln shaft preheater, be in the manufacture of cement with the equipment of the supporting preheated raw meal of rotary kiln.
Shaft preheater kiln is a kind of efficient low hear rate, and stability is good, can produce the suspended preheater kiln of high-mark cement grog.Its advantage is simple in structure, easy operating, and flowing resistance is little, and power consumption is lower; Especially the adaptability to raw material, fuel is strong.
At present, common in the world shaft preheater has three kinds of principal modes: the one, and the ZAB type that former East Germany produces is characterized in that upright tube divides three alms bowls to add the two stage cyclone tube, the section of upright tube is oval, the layout of each alms bowl vertical axis staggers mutually, and kiln gas is directly to enter upright tube.The 2nd, the Krupp type that former West Germany produces is characterized in that upright tube section is rounded, and upright tube divides three alms bowls to add the two stage cyclone tube, and the vertical axis of each alms bowl overlaps with upright tube center line, and kiln gas also is directly to enter upright tube.The 3rd, Czech's type, its upright tube cylindrical shell is cylindrical, is regardless of alms bowl in the tube, does not have the spreading awl, air is secant-shaped and enters upright tube.
In recent years, more than the shaft preheater of three kinds of forms, each rotary kiln cement factory all is applied at home, obtained certain effect, but great majority fail to reach design objective, compare with the advanced technology index of external similar kiln, exist tangible gap, per 1 kilogram of heat consumption of clinker generally more than 1200kcal, have in addition up to 1500kcal; Unit volume output is generally 40～50kg grog/m
3H; Cement power consumption per ton is about 115～130 degree electricity.Owing to yield poorly, the energy consumption height, make the manufacture of cement cost occupy high-leveled and difficult down.
The purpose of the present utility model is to provide a kind of shaft preheater of new structure type, wish that it can widely collect each tame chief, and it is low to have energy consumption, and heat is imitated and utilized highly, reaches the purpose that reduces the manufacture of cement cost.
This cement rotary kiln shaft preheater is by uptake flue, upright tube cylindrical shell, formations such as two-stage gas tedge, two-stage preheating whirlwind tube and spreading awl.The dominant ideas of its design are fully to prolong the holdup time of cement slurry in preheater, and the heat energy that rotary kiln is risen is not fully exerted in preheater and uses.Its concrete structure is vertical axis to be set in the described cylindrical shell and to found two alms bowls that the tube center line coincides, two alms bowl body tops are being provided with the two-stage preheating whirlwind tube of the form of series connection, one reentrant diameter and upright barrel diameter are being set than being the reducing of 0.55～0.65:1 between the two alms bowl bodies, its back taper base angle is 55 °～65 °; Respectively be provided with spreading awl in the described two alms bowl bodies.
Between described two-stage preheating tornadotron and the tremie pipe, upper and lower expansion storehouse and the flap valve that fuses is being set; The base cone angle of this expansion storehouse first half cone is 45 °, and reverse taper base cone angle, its underpart is 60 °; Its flap valve by rotating plate shaft, trim ring, inner ring, and sealing ring form, be characterized in that the sealing ring that can play the bearing effect is horizontally-arranged in the inner ring, its outer ring is being provided with a trim ring.
The height sum of described two-stage gas tedge is 15:1 with the ratio of its effective diameter; Described spreading awl, its diameter is 0.55:1 with the ratio of cylindrical shell effective diameter.
Simultaneously, establish a reducing in addition, be provided with one at the feed opening of two-stage gas tedge again in addition and can regulate the spreading plate in flue tangent line air inlet pipe and cylindrical shell joint portion in order to accelerate the speed of hot flue gas in cylindrical shell.
Described spreading plate can elastic in the horizontal direction 100mm; And can in ± 30 °, rotate freely.
According to the rotary kiln shaft preheater of above conceptual design, to compare with present prior art, its advantage is: fully prolonged the holdup time of cement slurry at shaft preheater, improved the heat energy utilization rate, reduced cement production consumption.
Accompanying drawing 1 is an overall structure schematic diagram of the present utility model;
Accompanying drawing 2 is the upright tube of the utility model middle part throat structure schematic diagrames;
Accompanying drawing 4 is the utility model flap valve schematic diagrames;
Accompanying drawing 6 is the utility model spreading plate structure schematic diagrames.
Further describe the utility model below in conjunction with accompanying drawing, and provide embodiment of the present utility model.
Each member title is as follows shown in the accompanying drawing:
(1) discharge pipe, (2) preheating whirlwind tube, (3) expansion storehouse, (4) vapor riser, (5) tremie pipe, (6) preheating whirlwind tube, (7) vapor riser, (8) spreading plate, (9) spreading awl, (10) spreading awl, (11) cylindrical shell, (12) go into the kiln tremie pipe, (13) kiln tail smoke-box, (14) rotary kiln, (15) tangent line air inlet pipe, (16) reducing, (17) reducing, (18) tremie pipe, (19) flap valve, (20) expansion storehouse, (21) rotating plate shaft, (22) trim ring, (23) inner ring, (24) sealing ring.
Further describe the utility model below in conjunction with accompanying drawing.
This cement rotary kiln shaft preheater is by uptake flue, and formations such as (9,10) is bored in cylindrical shell (11), vapor riser (4,7), preheating whirlwind tube (2,6) and spreading; In order to strengthen the holdup time of cement slurry in preheater, improve the heat energy utilization rate, two vertical axis are being set in cylindrical shell (11) and are founding two alms bowls that the tube center line coincides; Two alms bowl body tops are being provided with the two-stage preheating whirlwind tube (2,6) that is the series connection form; In upright tube cylindrical shell (11), be provided with simultaneously a reentrant diameter and upright barrel diameter between two alms bowls than being the reducing of 0.55～0.65:1; Hot blast wind speed when next alms bowl body rises to a last alms bowl body is accelerated.
In order to strengthen the contact-making surface of cement slurry and hot-air, between two-stage preheating whirlwind tube (2,6) and tremie pipe (5,18), expansion storehouse (3,20) and flap valve (19) be set, make the material that drops in the preheating whirlwind tube (2,6), in expansion storehouse (3,20), fully disperse to be heated; For the same reason, in cylindrical shell (11), tremie pipe (18) bottom is provided with two spreadings awls (9,10), makes material further disperse to be heated here.
In addition, this preheater respectively is provided with an adjustable spreading plate (8) at the feed opening of two-stage gas tedge (4,7), and the purpose of this plate also is the material that makes to be come out by tremie pipe, disperses because of collision at this; But this spreading plate level moves forward and backward 100mm simultaneously, on have a down dip ± 30 °.
Speed when the while is advanced cylindrical shell (11) in order to strengthen rotary kiln rising flue gas also is provided with a reducing (16) in flue tangent line air inlet pipe (15) and cylindrical shell joint portion.
Now this device course of work is summarized as follows:
Kiln tail high-temperature flue gas is through uptake flue, and enters cylindrical shell (11) bottom through tangent line air inlet pipe reducing (16).When cement material feeds from first order vapor riser (4), enter first order preheating whirlwind tube (2) with ascending air.After the separation, to second level vapor riser (7), enter second level preheating whirlwind tube (6) down with ascending air.After twice separation, under the material in upright tube, through the dispersion of spreading awl (9), reducing (17), spreading awl (10), spurt, disperse, continue rotation and descend, after rotating the thermal current heat exchange of rising, in upright tube bottom gas, the solid separation, enter rotary kiln through going into kiln tremie pipe (12), this partial material of going into kiln is carried for kiln discharge waste gas, tangentially enter upright tube again, participate in being heated dispersion once more.
Claims (5)
1, a kind of cement rotary kiln shaft preheater is made of uptake flue, a upright tube cylindrical shell (11), vapor riser (4,7), preheating whirlwind tube (2,6) and spreading awl (9,10), it is characterized in that being provided with in the described cylindrical shell (11) two alms bowls that vertical axis and upright tube center line coincide; Two alms bowl body tops are being provided with a reentrant diameter and upright barrel diameter ratio are being set between two alms bowls in the two-stage preheating whirlwind tube (2,6), upright tube cylindrical shell (11) of the form of series connection is 0.55～0.65: 1 reducing (17), and its back taper base angle is 55 °～65 °; Respectively be provided with spreading awl (9,10) in the described two alms bowl bodies.
2, cement rotary kiln shaft preheater according to claim 1 is characterized in that between described two-stage preheating whirlwind tube (2,6) and the tremie pipe (5,18) upper and lower expansion storehouse that fuses (3,20) and flap valve (19) being set; The base cone angle of this expansion storehouse first half cone is 45 °, and reverse taper base cone angle, its underpart is 60 °; Its flap valve (19) is made up of rotating plate shaft (21), trim ring (22), inner ring (23) and sealing ring (24), it is characterized in that the sealing ring (24) of the described bearing effect of having held concurrently is horizontally-arranged in the inner ring (23), and its arranged outside a trim ring (22).
3, according to claim 1 and 2 described cement rotary kiln shaft preheaters, the height sum that it is characterized in that described two-stage gas tedge (4,7) is 15:1 with the ratio of its effective diameter; Described spreading awl (9,10), the ratio of its diameter and cylindrical shell (11) effective diameter is 0.55:1.
4, according to claim 1 and 2 described cement rotary kiln shaft preheaters, it is characterized in that being provided with a reducing (16), be provided with one at the feed opening of two-stage gas tedge (4,7) simultaneously and can regulate spreading plate (8) in flue tangent line air inlet pipe (15) and cylindrical shell joint portion.
5,, it is characterized in that this spreading plate can move forward and backward 100mm, and can in ± 30 °, overturn according to claim 1 and 4 described cement rotary kiln shaft preheaters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93233110 CN2179563Y (en) | 1993-01-20 | 1993-01-20 | Verticle drum preheater for cement revolving kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93233110 CN2179563Y (en) | 1993-01-20 | 1993-01-20 | Verticle drum preheater for cement revolving kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2179563Y true CN2179563Y (en) | 1994-10-12 |
Family
ID=33809142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93233110 Expired - Fee Related CN2179563Y (en) | 1993-01-20 | 1993-01-20 | Verticle drum preheater for cement revolving kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2179563Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106152795A (en) * | 2016-08-23 | 2016-11-23 | 南京凯盛国际工程有限公司 | Preheater multiple spot blanking system |
| CN108050855A (en) * | 2018-01-18 | 2018-05-18 | 南京苏冶钙业技术有限公司 | Heat exchange shaft kiln |
| CN108088236A (en) * | 2018-01-18 | 2018-05-29 | 南京苏冶钙业技术有限公司 | Industry calcining shaft kiln |
-
1993
- 1993-01-20 CN CN 93233110 patent/CN2179563Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106152795A (en) * | 2016-08-23 | 2016-11-23 | 南京凯盛国际工程有限公司 | Preheater multiple spot blanking system |
| CN108050855A (en) * | 2018-01-18 | 2018-05-18 | 南京苏冶钙业技术有限公司 | Heat exchange shaft kiln |
| CN108088236A (en) * | 2018-01-18 | 2018-05-29 | 南京苏冶钙业技术有限公司 | Industry calcining shaft kiln |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |