CN208920878U - A kind of whirlwind pre-heating system - Google Patents
A kind of whirlwind pre-heating system Download PDFInfo
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- CN208920878U CN208920878U CN201821477108.XU CN201821477108U CN208920878U CN 208920878 U CN208920878 U CN 208920878U CN 201821477108 U CN201821477108 U CN 201821477108U CN 208920878 U CN208920878 U CN 208920878U
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Abstract
The utility model discloses a kind of whirlwind pre-heating systems, including raw material feeding device, dore furnace, rotary kiln, N grades of cyclone preheaters, the blast pipe of the 1st grade of cyclone preheater is connect with raw material feeding device in the N grades of cyclone preheater, and the discharge pipe of the 1st grade of cyclone preheater is connected with exhaust blower；The air inlet of N grades of cyclone preheaters is connected to the air outlet of dore furnace, and the bottom of dore furnace is connected with the smoke-box of rotary kiln；The cyclone preheater of two kinds of forms is included at least in the N grades of cyclone preheater, one kind is cement industry cyclone cylinder, and another kind is Cyclone Separator with Downward Exhaust Gas；Wherein N represents the series of certain level-one cyclone preheater, and N is any one natural number for being less than or equal to 7 more than or equal to 3.The system realizes under conditions of not increasing kiln tail frame height, can increase the series of cyclone preheater, so as to improve the thermal efficiency；The system running resistance is small simultaneously, and investment is reasonable.
Description
Technical field
The utility model relates to raw material preheating calcining technology field, in particular to a kind of whirlwind pre-heating system.
Background technique
Suspension preheating predecomposition technology is the core and ardealite production producing sulfuric acid and jointly of new dry cement production technology
The key technology of clinker.Its maximum feature be the gas-solid heat exchange of stacking states and mass transfer in original rotary kiln are moved on to it is outstanding
It is carried out in floating preheater, quickly completes the drying, preheating and decomposable process of material under suspended state outside kiln.
Precalcining system is made of suspended preheater and dore furnace, and suspended preheater uses cyclone cylinder and whirlwind at different levels
Connection air hose between cylinder is as heat exchange unit.At present industrially suspended preheater generally by Pyatyi or six grades of whirlwind
Tandem compound forms preheater from top to down, and the height of civil engineering structure (preheater pylon) is directly proportional to the series of preheater.
The heat recovery efficiency of preheater increases with the increase of the series of cyclone cylinder, but series increase so that cyclone preheater pylon
Increase therewith.Along with the continuous enlargement of nsp kiln device, nsp kiln suspended preheater-heat exchange pipeline-dore furnace
Braced frame height has been over 100 meters, so as to cause the energy consumption of improving material, the steel using amount of kiln tail frame, kiln tail civil engineering
Investment increases.
As suspension preheating and predecomposition technology are ripe day by day, dore furnace draw ratio is also in rising trend.Existing apparatus
Decomposition furnace outlet height has been significantly larger than end grade suspended preheater material and has entered height required for kiln, to reduce suspension preheating
The frame height of device is taken to be exported between the grade suspended preheater of end in dore furnace furnace roof at present and adds " gooseneck (U-shaped
Pipe) " method, using gooseneck downwards turn back, come reduce end grade suspended preheater arrangement absolute altitude.Meanwhile C1 grades outstanding
Floating preheater flue gas leading is also " gooseneck ".
Nanjing University of Technology Zhang Guanqing " in oxygen dore furnace gooseneck and exhaust piping gas flowing law test and numerical value
Analog study " it one the article pointed out: " gooseneck " is increased to residence time of material in dore furnace for creating cement producing line
Contribute fairly limited, effect is also undesirable.Flue gas leading, " gooseneck " gas flowfield are more similar, and resistance is respectively with one
The resistance of a cyclone preheater is suitable.Resistance will lead to greatly the increase of high-temperature blower power consumption, and operating cost is higher.
Frame to solve the problems, such as cement preheater is excessively high to be brought, and discloses one kind in Chinese invention CN102954699A
Cyclone cylinder in suspended preheater system is replaced current use using lateral arrangement by " lateral arrangement of cement preheater designs "
Be vertically arranged." U "-shaped design of pipeline between adjacent preheater, raw material are added near the bottom of "U" shaped for it,
It is dispelled under the action of thermal current in pipeline and is brought to next stage cyclone cylinder.But the resistance of ducting of " u "-shaped is one suitable
The resistance of cyclone preheater.The resistance of entire pre-heating system is caused to be multiplied.The wind pressure increase of kiln system high-temperature blower is more,
The manufacture of Large-scale High-Pressure blower is difficult, and power consumption also obviously increases, so far there are no industrialized device is using.
In conclusion that there are braced frames is excessively high for cyclone preheater in the prior art, builds difficulty and construction investment takes
With big disadvantage, and system running resistance is big, and energy consumption is high.
Utility model content
It is high that the technical problem to be solved by the present invention is to provide a kind of thermals efficiency, and system running resistance is small, and investment is reasonable
Whirlwind pre-heating system.
In order to solve the above-mentioned technical problem, the technical solution of the utility model are as follows:
A kind of whirlwind pre-heating system, including raw material feeding device, dore furnace, rotary kiln, N grade cyclone preheater, it is N grades described
The blast pipe of the 1st grade of cyclone preheater is connect with raw material feeding device in cyclone preheater, the discharge pipe of the 1st grade of cyclone preheater
It is connected with exhaust blower；The air inlet of N grades of cyclone preheaters is connected to the air outlet of dore furnace, the bottom of dore furnace and rotary kiln
The smoke-box of kiln tail is connected；The cyclone preheater of two kinds of forms is included at least in the N grades of cyclone preheater, one kind is cement work
Industry cyclone cylinder, another kind are Cyclone Separator with Downward Exhaust Gas；Wherein, N represents the series of certain level-one cyclone preheater, and N is big
In any one natural numbers for being less than or equal to 7 equal to 3.
Further, in the N grades of cyclone preheater, at least m grades is Cyclone Separator with Downward Exhaust Gas, and the value model of m
It encloses are as follows: 1≤m≤N-1.
Further, the 1st grade of cyclone preheater is Cyclone Separator with Downward Exhaust Gas, and the 2nd grade of cyclone preheater, the 3rd
Into N grades of cyclone preheaters, at least level-one is the cement industry cyclone cylinder to grade cyclone preheater.
Further, the discharge nozzle of the N grades of cyclone preheaters is connected with material distributing valve, and the material distributing valve respectively with return
Rotary kiln and/or dore furnace are connected.
Further, in the N grades of cyclone preheater, N 6.
The beneficial effects of the utility model are:
The utility model is by getting up to use Cyclone Separator with Downward Exhaust Gas and the collocation of cement industry cyclone cylinder, due under
The discharge port and air outlet of air discharge cyclone separator are in bottom, and the air outlet of cement industry cyclone cylinder is at top, discharging
Mouth is in bottom；By combining the cyclone separator of above two form using, it can be achieved that existing production line, do not increasing
Under conditions of adding kiln tail frame height, increase the series of cyclone preheater；Or kiln tail frame height is reduced on new device, into
And kiln tail frame steel using amount and construction investment are reduced, while said combination mode is compared to " u "-shapeds knots such as more traditional " goosenecks "
Structure design method, system resistance is small, can arrange the cyclone preheater of more series, and heat utilization efficiency is high.
Detailed description of the invention
Structural schematic diagram when Fig. 1 is N=6 in the utility model；
In figure, the 2nd grade of cyclone preheater of 1-, 2- raw material feeding device, the 1st grade of cyclone preheater of 3-, 4- discharge pipe, 5-
3 grades of cyclone preheaters, the 4th grade of cyclone preheater of 6-, the 5th grade of cyclone preheater of 7-, the 6th grade of cyclone preheater of 8-, 9- air valve,
10- material distributing valve, 11- dore furnace, 12- smoke-box, 13- rotary kiln.
Specific embodiment
Specific embodiment of the present utility model is described further with reference to the accompanying drawing.It should be noted that
The explanation of these embodiments is used to help to understand the utility model, but does not constitute the restriction to the utility model.This
Outside, technical characteristic involved in the various embodiments of the present invention described below is as long as they do not conflict with each other
It can be combined with each other.
As shown in Figure 1, a kind of whirlwind pre-heating system, including raw material feeding device 2, dore furnace 11, rotary kiln 13 and 6
Grade cyclone preheater, 6 grades of cyclone preheaters are from top to bottom respectively the 2nd grade of cyclone preheater 1, the 1st grade of whirlwind preheating
Device 3,3rd level cyclone preheater 5, the 4th grade of cyclone preheater 6, the 5th grade of cyclone preheater 7, the 6th grade of cyclone preheater 9, wherein
Air valve 9 is equipped on the discharge nozzle of every grade of cyclone preheater lower part connection；The blast pipe and raw material of 1st grade of cyclone preheater 3
Feeding device 2 connects, and discharge pipe is connected with exhaust blower (not shown)；The air inlet of 6th grade of cyclone preheater 8 and decomposition
The air outlet of furnace 11 is connected to, and the bottom of dore furnace 11 is connected with the smoke-box 12 of 13 kiln tail of rotary kiln；The 5th grade of whirlwind preheating
The discharge nozzle of device 7 is connected with dore furnace 11.Wherein, the 1st grade of cyclone preheater 3, the 2nd grade of cyclone preheater 1 and the 6th
Grade cyclone preheater 8 is Cyclone Separator with Downward Exhaust Gas, the 3rd level cyclone preheater 5, the 4th grade of cyclone preheater 6 and the
5 grades of cyclone preheaters 7 are cement industry cyclone cylinder.
Certainly, the mulitistage cyclone in the utility model is not limited to 6 grades, can also be 3 grades, 4 grades, 5 grades either 7
Grade, only need to meet the cyclone preheater for including at least two kinds of forms in above-mentioned mulitistage cyclone, a kind of is cement industry
With cyclone cylinder, another kind is Cyclone Separator with Downward Exhaust Gas.
In addition, it should be noted that, being also provided in above-mentioned mulitistage cyclone in the prior art horizontal
Cyclone separator, thus by three kinds of Cyclone Separator with Downward Exhaust Gas, cement industry cyclone cylinder and horizontal cyclone separator differences
The cyclone separator of form combines to arrange in pairs or groups and use, and the cyclone separator for the single type that compares still can obtain preferably
Pre-heat effect.
Specifically, the discharge nozzle of the 6th grade of cyclone preheater is connected with material distributing valve 10, and the material distributing valve 10 respectively with
Rotary kiln 13 and/or dore furnace 11 are connected.
The course of work of the utility model:
Raw material feeding device 2 is connected with the blast pipe of the 1st grade of cyclone preheater, by the hot wind of the 2nd grade of cyclone preheater 1
Bring pipeline into and enter the 1st grade of cyclone preheater 3, after the heating of the 1st grade of cyclone preheater 3 and separation, gas by pipeline 4 into
Enter exhaust blower, material is connected by discharge nozzle and air valve with the inlet pipeline of the 2nd grade of cyclone preheater 1；By from 3rd level whirlwind
The exhaust gas that preheater 5 is discharged takes the 2nd grade of heating of cyclone preheater 1 and separation to, and material passes through discharge nozzle and air valve and 3rd level
5 inlet pipeline of cyclone preheater is connected；3rd level cyclone preheater 5 is brought by the exhaust gas being discharged from the 4th grade of cyclone preheater 6 to add
Heat and separation, material are connected by discharge nozzle and air valve with the 4th grade of 6 pipeline of cyclone preheater；By from the 5th grade of cyclone preheater
The exhaust gas of 7 discharges brings the heating of cyclone preheater 6 and separation into, and material passes through discharge nozzle and air valve and the 5th grade of cyclone preheater 7
Inlet pipeline is connected；The 5th grade of heating of cyclone preheater 7 and separation, object are brought by the exhaust gas being discharged from the 6th grade of cyclone preheater 8
Material is connected by discharge nozzle and air valve with dore furnace 11；The material decomposed is completed in dore furnace 11 and hot gas enters the 6th
Conveyance is carried out in grade cyclone preheater, material passes through discharge nozzle, material distributing valve and air valve and rotary kiln 13 and/or dore furnace
11 are connected.
The embodiments of the present invention is explained in detail in conjunction with attached drawing above, but the utility model is not limited to be retouched
The embodiment stated.For a person skilled in the art, right in the case where not departing from the utility model principle and spirit
These embodiments carry out a variety of change, modification, replacement and modification, still fall in the protection scope of the utility model.
Claims (5)
1. a kind of whirlwind pre-heating system, including raw material feeding device (2), dore furnace (11), rotary kiln (13), N grades of whirlwind preheatings
Device, the blast pipe of the 1st grade of cyclone preheater (3) is connect with raw material feeding device (2) in the N grades of cyclone preheater, the 1st grade of rotation
The discharge pipe of wind preheater (3) is connected with exhaust blower；The air inlet of N grades of cyclone preheaters and the air outlet of dore furnace (11) connect
Logical, the bottom of dore furnace (11) is connected with the smoke-box (12) of rotary kiln (13) kiln tail；It is characterized by: the N grades of whirlwind is pre-
The cyclone preheater of two kinds of forms is included at least in hot device, one kind is cement industry cyclone cylinder, and another kind is downward air discharge cyclone
Separator；Wherein, N represents the series of certain level-one cyclone preheater, and N is any one nature for being less than or equal to 7 more than or equal to 3
Number.
2. a kind of whirlwind pre-heating system according to claim 1, it is characterised in that: in the N grades of cyclone preheater, at least
Have m grades for Cyclone Separator with Downward Exhaust Gas, and the value range of m are as follows: 1≤m≤N-1.
3. a kind of whirlwind pre-heating system according to claim 1, it is characterised in that: the 1st grade of cyclone preheater (3) be
Cyclone Separator with Downward Exhaust Gas, and the 2nd grade of cyclone preheater, 3rd level cyclone preheater are into N grades of cyclone preheaters at least one
Grade is the cement industry cyclone cylinder.
4. a kind of whirlwind pre-heating system according to claim 1, it is characterised in that: the N grades of cyclone preheaters go out
Expects pipe is connected with material distributing valve (10), and the material distributing valve (10) is connected with rotary kiln (13) and/or dore furnace (11) respectively.
5. a kind of whirlwind pre-heating system according to any one of claim 1 to 4, it is characterised in that: the N grades of whirlwind is pre-
In hot device, N 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821477108.XU CN208920878U (en) | 2018-09-10 | 2018-09-10 | A kind of whirlwind pre-heating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821477108.XU CN208920878U (en) | 2018-09-10 | 2018-09-10 | A kind of whirlwind pre-heating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208920878U true CN208920878U (en) | 2019-05-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821477108.XU Active CN208920878U (en) | 2018-09-10 | 2018-09-10 | A kind of whirlwind pre-heating system |
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| Country | Link |
|---|---|
| CN (1) | CN208920878U (en) |
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2018
- 2018-09-10 CN CN201821477108.XU patent/CN208920878U/en active Active
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