CN105180662B - High-temperature particulate material stage cooling method and device - Google Patents
High-temperature particulate material stage cooling method and device Download PDFInfo
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- CN105180662B CN105180662B CN201510483976.3A CN201510483976A CN105180662B CN 105180662 B CN105180662 B CN 105180662B CN 201510483976 A CN201510483976 A CN 201510483976A CN 105180662 B CN105180662 B CN 105180662B
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Abstract
The invention discloses a high-temperature particulate material stage cooling method. According to the method, a feed inlet of a cooling material bed is transversely divided into an upper area and a lower area by a retaining wall the bottom of which is suspended, particle classification and quenching are conducted on high-temperature particulate materials discharged from a rotary kiln with airflow, coarse particulate materials obtained after classification fall into the upper area of the feed inlet of the cooling material bed to form a coarse particle material bed for thick material bed countercurrent heat exchange, fine particulate materials obtained after classification fall into the lower area of the feed inlet of the cooling material bed, and the coarse particulate materials subjected to countercurrent heat exchange enter the lower area of the feed inlet of the cooling material bed through the bottom of the retaining wall to be cooled on the cooling material bed together with the fine particulate materials in the lower area. The invention further discloses a high-temperature particulate material stage cooling device adopting the method. The high-temperature particle classification technique is adopted, the coarse particles are cooled on the thick material bed, the amount of cooling air can be reduced, the heat recovery efficiency of a system can be improved, and then energy is saved.
Description
Technical field
The invention belongs to Thermal Equipment technical field, it is related to the method and dress of a kind of high-temperature particle shape stock grading cooling
Put.
Background technology
The discharging of many Industrial Stoves is high-temperature particle shape material, such as clinker, lime, alumina clinker, iron ore
Sintering deposit etc. to it, it is necessary to be cooled down and recuperation of heat.Improve the direction that heat recovery efficiency is cooler sustained improvement.
By taking manufacture of cement as an example, cooler is one of important equipment of cement firing system, carries the cold of clinker
But, the task such as conveying and heat recovery.Slide slotted cooler is cooler pattern widely used at present, its development experience
First, second, third forth generation course till now, its gas-solid heat exchange mode is always for cross-flow exchanges heat.It is now widely used
The thickness of feed layer of the third generation and forth generation grate cooler is general in 600~900mm, a compartment pressure in 5000~10000Pa,
Heat recovery efficiency is between 65~75%.If the thickness of feed layer of clinker can be greatly improved, increase the gas-solid heat exchange time, realize
Countercurrent flow, it becomes possible to improve the heat recovery efficiency to clinker, realize energy-saving.But the clinker particle diameter distribution for going out rotary kiln is wide
General, fine grained is filled among coarse grained gap so that the resistance of the bed of material is larger, and greatly improving thickness of feed layer certainly will cause material
Layer resistance is greatly improved, so as to increase system power consumption.
The content of the invention
The present invention provides a kind of high-temperature particle shape stock grading cooling to solve technical problem present in known technology
Method and device, the method and the device can reduce system energy consumption while heat recovery efficiency is improved.
Present invention technical scheme being taken of technical problem present in solution known technology is：A kind of high temperature
Granular material is classified cooling means, and the feeding mouth that will cool down material bed using the hanging barricade in bottom is divided transversely into upstream and downstream two
Region, gradation and chilling are carried out using air-flow to the high-temperature particle shape material for going out rotary kiln, make the coarseparticulate after classification
Material falls into cooling material bed feeding mouth upstream region, and forming coarse granule material bed carries out thick material bed countercurrent flow, makes thin after classification
Grain material falls into cooling material bed feeding mouth downstream area, and the coarse granule material by countercurrent flow enters cooling by barricade bottom
Material bed feeding mouth downstream area is cooled down on cooling material bed together with the fine granular materials in the face that falls on.
The thickness of coarse granule material bed is 1.0~4.0 meters.
Coarse granule material bed bottom be provided with hydraulic pressure material-pulling device or application activity grate, by adjust hydraulic pressure material-pulling device or
The thickness and materialbeds comminution of the promotion FREQUENCY CONTROL coarse granule material bed of movable grate.
The present invention another technical scheme for being taken of technical problem present in solution known technology is：Using above-mentioned
The high-temperature particle shape stock grading cooling device of method, including comb formula cooling device, the feeding mouth of the comb formula cooling device with
The discharging opening of the rotary kiln is connected, and the hanging barricade in bottom, the gear are provided with the feeding mouth of the comb formula cooling device
The feeding mouth of the comb formula cooling device is divided transversely into two regions of upstream and downstream by wall, and it is cold that the barricade is fixed on the comb formula
But on the side wall of device；Air flow blowing device is provided with below the discharging opening of the rotary kiln, the air flow blowing device is located at
The feeding mouth top of the comb formula cooling device.
Hydraulic pressure material-pulling device is provided with the feeding mouth upstream region bottom of the comb formula cooling device.
The part of corresponding its feeding mouth upstream region of the comb formula cooling device uses movable grate.
The present invention has the advantages and positive effects that：
1) coarse granule material is cooled down using the thick material bed type of cooling after large or fine granule is separated, thick is advantageously reduced
The materialbeds comminution of granular material, therefore the material bed thickness of coarse granule shape material can be greatly improved, by countercurrent flow, extend cold
But residence time of the air in coarse granule material bed, and then improve to the heat recovery efficiency of high-temperature material.
2) coarse granule material is cooled down using the thick material bed type of cooling after large or fine granule is separated, is conducive to avoiding thickness
Materialbeds comminution skewness when particle is cooled down jointly caused by size segregation, thus be conducive to avoiding air flow shortcircuit, fines " red
The phenomenons such as river ", improve the heat recovery efficiency to clinker, improve clinker cooling effect.
3) while gradation is cooled in improving heat recovery efficiency, it is possible to decrease cooling air quantity, system energy consumption is reduced, and
Reduce and take up an area and specification of equipment, reduce system investments.
Brief description of the drawings
Fig. 1 is using a kind of apparatus structure schematic diagram of high-temperature particle shape stock grading cooling means of the invention.
In figure：1 is rotary kiln, and 2 is wicket cover, and 3 is burner, and 4 is air flow blowing device, and 5 is barricade, and 6 is cooling material
Bed feeding mouth upstream region, 7 is hydraulic pressure material-pulling device, and 8 is comb formula cooling device, and 9 is that waste heat boiler takes air port, and 10 is that the lingering remnants of past customs goes out
Mouthful, 11 is chamotte crusher.
Specific embodiment
For the content of the invention of the invention, feature and effect can be further appreciated that, following examples are hereby enumerated, and coordinate accompanying drawing
Describe in detail as follows：
Fig. 1 is referred to, a kind of high-temperature particle shape stock grading cooling means will be cooled down using the hanging barricade 5 in bottom and expected
The feeding mouth of bed is divided transversely into two regions of upstream and downstream, the high-temperature particle shape material for going out rotary kiln 1 is carried out using air-flow
Grain classification and chilling, make the coarse granule material after classification fall into cooling material bed feeding mouth upstream region, form coarse granule material bed and enter
The thick material bed countercurrent flow of row, makes the fine granular materials after classification fall into cooling material bed feeding mouth downstream area, by countercurrent flow
Coarse granule material cooling material bed feeding mouth downstream area is entered by the bottom of barricade 5 and the fine granular materials one in face are fallen on
Get up and cooled down on cooling material.
In the above-described embodiments, the thickness of coarse granule material bed is 1.0~4.0 meters.Hydraulic pressure is provided with coarse granule material bed bottom
Material-pulling device 7 or application activity grate, by the promotion FREQUENCY CONTROL coarse granule material for adjusting hydraulic pressure material-pulling device 7 or movable grate
The thickness and materialbeds comminution of bed.
Using the high-temperature particle shape stock grading cooling device of the above method, including comb formula cooling device 8, the comb formula is cold
But the feeding mouth of device 8 is connected with the discharging opening of the rotary kiln 1, and bottom is provided with the feeding mouth of the comb formula cooling device 8
The feeding mouth of the comb formula cooling device 8 is divided transversely into two regions of upstream and downstream, institute by the hanging barricade 5 in portion, the barricade 5
Barricade 5 is stated to be fixed on the side wall of the comb formula cooling device 8；Air flow blowing is provided with below the discharging opening of the rotary kiln 1
Device 4, the air flow blowing device 4 is located at the feeding mouth top of the comb formula cooling device 8.
The surface of above-mentioned barricade 5 is provided with refractory material, and a setting height is left in lower edge and the cooling material bed bottom of barricade 5.
The top of above-mentioned comb formula cooling device 8 is cooling material bed, and material bed lower section is the multiple air compartments for mutually separating, and each air compartment is according to wind
Amount and blast demand are configured with corresponding cooling blower.Can divide from upstream to downstream at the top of above-mentioned comb formula cooling device 8
Not She Zhi waste heat boiler take air port 9 and lingering remnants of past customs outlet 10, at the afterbody of comb formula cooling device 8 or middle part, chamotte crusher is set
11.Wicket cover 2 is provided with the discharging opening of rotary kiln 1, burner 3 is installed in wicket cover 2.
In the present embodiment, in order that being cooled down by countercurrent flow in the feeding mouth upstream region of comb formula cooling device 8
Coarse granule material afterwards smoothly can be cooled down subsequently into feeding mouth downstream area, can be in the comb formula cooling device 8
Feeding mouth upstream region bottom sets hydraulic pressure material-pulling device 7, is continued coarse granule push-in downstream area using hydraulic pressure material-pulling device 7
Cooling.Movable grate can also be used in the part of corresponding its feeding mouth upstream region of the comb formula cooling device 8, by activity
Device in grate moves back and forth and continues to cool down by coarse granule feeding downstream area.
Above-described embodiment is directed to the method and apparatus of cement clinker particles classification cooling, and its operation principle is：
A small amount of wind is supplied to air flow blowing device 4 by high pressure positive blower or air compression station, is added through air flow blowing device 4
High velocity air is formed after speed.High velocity air has larger momentum, the high temperature chamotte that goes out rotary kiln 1 can be carried out gradation and
Chilling.Coarse granule material is influenceed smaller by high velocity air, the cooling material bed pan feeding fallen into after gradation close to kilneye
Mouth upstream region 6, forms 1.0~4.0 meters of coarse granule material bed.The cooling air that lower section air compartment is blasted is carried out with coarse granule material bed
It is sufficiently thick to expect bed countercurrent flow.Through the coarse granule of blocked up material bed cooling by hydraulic pressure material-pulling device 7 or movable grate feeding comb formula
The follow-up grate of cooling device 8 continues to cool down.Coarse granule material bed can be controlled by the promotion frequency for adjusting hydraulic pressure material-pulling device 7
Thickness.Fine grained is influenceed larger by high velocity air, and the cooling material bed pan feeding positioned at the opposite side of barricade 5 is moved to high velocity air
Mouth downstream area, and directly fall in out on the coarse granule bed of material of upstream region.Slightly, fine grained is in the follow-up of comb formula cooling device 8
Target temperature (generally 65 DEG C+environment temperature) is cooled in grate jointly.Through cooling material bed feeding mouth upstream region and
The cooling air of the front end of comb formula cooling device 8 is heated to 900~1200 DEG C, is used as into kiln Secondary Air and enters stove tertiary air to return
Receive heat content.Through in comb formula cooling device 8, the cooling air of back segment can be used for cogeneration after being heated, more than remaining low temperature
Wind outer row after gathering dust.
The cooling air quantity of existing cement clinker grate cooler is generally 1.9~2.3Nm3/ kgcl, heat recovery efficiency exists
Between 65~75%.Using the technical scheme of the present embodiment, cooling air quantity can be down to 1.2~1.8Nm3/ kgcl, heat recovery efficiency
Can improve to more than 80%.The present invention uses high-temperature particle classification technique, coarse granule to be conducive to drop using the thick material bed type of cooling
Low cooling air volume, improves system heat recovery efficiency, so as to realize energy-conservation.
The present embodiment is only presently preferred embodiments of the present invention, is not limited to the present invention.To high-temperature particle shape thing
It is technological core of the invention that material carries out gradation cooling.The position of chamotte crusher both can be in the tail of comb formula cooling device
Portion, it is also possible at the middle part of comb formula cooling device.It is all according to technical spirit of the invention to any letter made for any of the above embodiments
Single modification, still falls within the range of technical solution of the present invention.
Claims (6)
1. a kind of high-temperature particle shape stock grading cooling means, it is characterised in that material bed will be cooled down using the hanging barricade in bottom
Feeding mouth be divided transversely into two regions of upstream and downstream, particle point is carried out to the high-temperature particle shape material for going out rotary kiln using air-flow
Level and chilling, make the coarse granule material after classification fall into cooling material bed feeding mouth upstream region, and forming coarse granule material bed carries out thickness
Material bed countercurrent flow, makes the fine granular materials after classification fall into cooling material bed feeding mouth downstream area, by the thick of countercurrent flow
Granule materials enter cooling material bed feeding mouth downstream area and the fine granular materials in the face that falls on and exist together by barricade bottom
Cooled down on cooling material bed.
2. high-temperature particle shape stock grading cooling means according to claim 1, it is characterised in that the thickness of coarse granule material bed
It is 1.0~4.0 meters.
3. high-temperature particle shape stock grading cooling means according to claim 1 or claim 2, it is characterised in that in coarse granule material bed
Bottom is provided with hydraulic pressure material-pulling device or application activity grate, by the promotion frequency control for adjusting hydraulic pressure material-pulling device or movable grate
The thickness and materialbeds comminution of coarse granule material bed processed.
4. a kind of high-temperature particle shape stock grading cooling device using method as claimed in claim 1, including comb formula cooling dress
Put, the feeding mouth of the comb formula cooling device is connected with the discharging opening of the rotary kiln, it is characterised in that in comb formula cooling
The hanging barricade in bottom is provided with the feeding mouth of device, be divided transversely into for the feeding mouth of the comb formula cooling device by the barricade
Two regions of upstream and downstream, the barricade is fixed on the side wall of the comb formula cooling device；Under the discharging opening of the rotary kiln
Side is provided with air flow blowing device, and the air flow blowing device is located at the feeding mouth top of the comb formula cooling device.
5. high-temperature particle shape stock grading cooling device according to claim 4, it is characterised in that cooled down in the comb formula and filled
The feeding mouth upstream region bottom put is provided with hydraulic pressure material-pulling device.
6. high-temperature particle shape stock grading cooling device according to claim 4, it is characterised in that the comb formula cooling device
The part of corresponding its feeding mouth upstream region uses movable grate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510483976.3A CN105180662B (en) | 2015-08-07 | 2015-08-07 | High-temperature particulate material stage cooling method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510483976.3A CN105180662B (en) | 2015-08-07 | 2015-08-07 | High-temperature particulate material stage cooling method and device |
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| CN105180662A CN105180662A (en) | 2015-12-23 |
| CN105180662B true CN105180662B (en) | 2017-05-24 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105546976B (en) * | 2016-01-07 | 2017-07-14 | 湖南大学 | A kind of grate cooler |
| CN106197051B (en) * | 2016-08-31 | 2018-04-17 | 大峘集团有限公司 | A kind of solid material cooling device |
| CN110066893B (en) * | 2019-05-13 | 2023-12-19 | 四川川润股份有限公司 | Air heat exchange device for cooling thermal state slag |
| CN110715547B (en) * | 2019-11-14 | 2024-06-14 | 天津水泥工业设计研究院有限公司 | Horizontal cement clinker grate type particle grading cooler and cooling method |
| CN110668719B (en) * | 2019-11-14 | 2024-02-23 | 天津水泥工业设计研究院有限公司 | Vertical cement clinker grate type particle grading cooler and cooling method |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2904323A (en) * | 1956-04-20 | 1959-09-15 | Cementir Cementerie Del Tirren | Cooling devices for the cement clinkers |
| DE4443589A1 (en) * | 1994-12-07 | 1996-06-13 | Doumet Joseph E | Process and plant for cooling and producing bulk goods |
| CN2278191Y (en) * | 1997-02-05 | 1998-04-08 | 刘宗洲 | Slope cooling machine |
| JP5866196B2 (en) * | 2011-12-26 | 2016-02-17 | 川崎重工業株式会社 | Bulk material cooling apparatus and bulk material cooling method |
| CN203642720U (en) * | 2013-12-15 | 2014-06-11 | 安阳中联水泥有限公司 | Waste heat recovery system of grate cooler |
| CN204007187U (en) * | 2014-08-23 | 2014-12-10 | 广东梅雁吉祥水电股份有限公司 | A kind of cleaning plant of chamotte cooler |
| CN204329638U (en) * | 2014-12-01 | 2015-05-13 | 登封市嵩基水泥有限公司 | The air-cooled modifying device of the poly-material of grate-cooler |
| CN205027138U (en) * | 2015-08-07 | 2016-02-10 | 天津水泥工业设计研究院有限公司 | High temperature graininess material stepped cooling device |
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Effective date of registration: 20170918 Address after: Tianjin District of Beichen city in the 300400 major North Road No. 1 Co-patentee after: Tianjin Sinoma Engineering Research Center Co., Ltd. Patentee after: Tianjin Cement Industry Design & Research Institute Co., Ltd. Address before: Tianjin District of Beichen city in the 300400 major North Road No. 1 Patentee before: Tianjin Cement Industry Design & Research Institute Co., Ltd. |