CN107576190A - The tower drier that a kind of waste heat from tail gas recycles - Google Patents
The tower drier that a kind of waste heat from tail gas recycles Download PDFInfo
- Publication number
- CN107576190A CN107576190A CN201710637359.3A CN201710637359A CN107576190A CN 107576190 A CN107576190 A CN 107576190A CN 201710637359 A CN201710637359 A CN 201710637359A CN 107576190 A CN107576190 A CN 107576190A
- Authority
- CN
- China
- Prior art keywords
- dispenser
- outer barrel
- flue
- raw coal
- tower
- 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.)
- Granted
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The invention discloses a kind of raw coal tower drier being applied to by the use of coal dust as the energy.High-temperature tail gas flue passes through from dryer center, and flue top is provided with expansion joint and the rotary fluid no less than two layers.Dryer outer wall is coated with heat-insulation layer, and arrangement is by conical dispenser I and dispenser II between outer barrel and flue so that raw coal is turned back flowing into " it " word, reinforcing drying effect.Be designed with expansion chamber in outer barrel inside top, for settling dust, mitigate the operating pressure of deduster, annular bellows are located at outer barrel bottom, connected with wind tower, are evenly arranged blast cap in wind tower, ensure hot blast even into.There is air vent on dispenser, strengthen the drying of raw coal and reduce system interior air-flow resistance.The upper end of dispenser is provided with injection tube, prevents accumulation of the raw coal on dispenser.This tower drier takes full advantage of waste heat from tail gas, has saved the energy, enhances drying effect, accomplishes making full use of for waste heat, reduces raw coal drying energy consumption.
Description
Technical field
The present invention is applied to the industrial furnace system equipment of the industries such as mine, metallurgy, building materials, is related to a kind of high using stove
The tower drier of warm tail gas waste heat drying raw coal, the industrial furnace being particularly suitable for use in by the use of coal dust as the energy.
Background technology
The industrial furnace of the industries such as mine, metallurgy, building materials is production necessary equipment, and these stoves generally consider in design
The heat recovery of high-temperature tail gas and comprehensive utilization.Accompanying drawing 1 is to use coal dust to equip letter for a kind of Limestone rotary kiln of the energy
Figure, including rotary kiln, preheater, cooler, burner, flue, deduster, air blower and chimney.Rotary kiln exists lime stone
Calcining be lime under high temperature, and coal dust is blowed into rotary kiln and provides high-temperature calcination heat energy by burner, cooler by high-temperature lime and
Combustion air carries out heat exchange, and lime finished product is cooled down, and combustion air is preheated, so as to improve the combustion-supporting efficiency of air,
Preheater is toasted preheating in advance using high-temperature tail gas to entering kiln lime stone, and high-temperature tail gas cools.Generally, from
About 200-300 DEG C of the exhaust temperature that preheater comes out, after cooling, is pumped into chimney into deduster dedusting, then through air blower
Discharge is diffused.
The high-temperature tail gas come out from preheater, to meet the job requirement of deduster（Typically≤200 DEG C）Arranged, it is necessary to take
Apply and radiating and cooling is carried out to high-temperature tail gas, conventional measure is to use mechanical air cooler, and air cooling-down is blowed into pipeline.It is this
The type of cooling, that is, waste heat is wasted, also increase power consumption.
Raw coal as calcined by rotary kiln fuel is influenceed by market condition, and its water content is often higher, reaches as high as sometimes
To more than 20%, the production efficiency that processing coal dust is ground by raw coal is had a strong impact on.To meet the demand for fuel of calcined by rotary kiln, lead to
Often need to be separately provided dryer or hot-blast stove to raw coal progress drying and processing, then ground, so as to add coal dust life
The equipment complexity of production, adds floor space and energy consumption.
The content of the invention
Present invention solves the technical problem that it is：A kind of tower drier is provided, raw coal dried using waste heat from tail gas,
Reduce raw coal drying energy consumption.
The present invention adopts the technical scheme that：
The flue of tower drier passes through from the center of dryer, and the top of flue is provided with expansion joint, ensures the whole of dryer
Body is safe, and no less than two layers rotary fluid is provided with flue, and with enhanced heat exchange effect, the outer barrel of dryer is coated with heat-insulation layer,
To reduce radiating, arrangement is by conical dispenser I and dispenser II between outer barrel and flue so that raw coal is turned back into " it " word
Flowing, increase the heat exchange area and heat-exchange time of raw material and hot blast, strengthen drying effect.Sedimentation is designed with outer barrel inside top
Room, for settling dust, mitigate the operating pressure of deduster, annular bellows be installed in outer barrel lower outside, annular bellows with
Wind tower connection in outer barrel.
Wind tower includes ventilation ring beam, blast cap, communicating pipe and supporting plate, connects annular bellows and ventilation ring beam communicating pipe；Branch
Fagging is welded to connect flue and ventilation ring beam, plays fixed venting ring beam action.There is ventilating duct inside blast cap, uniform arrangement
On ventilation ring beam, meet the requirement for being uniformly sent into hot blast.
Further, air vent is designed with dispenser, hot blast passes through from air vent, strengthens the drying of raw coal.In dispenser
Upper end injection tube is installed, prevent accumulation of the raw coal on dispenser.
Further, peep hole and platform are installed, peep hole is dismantled and assembled, is easy to observe, clears up and inspection operation on outer barrel.
Further, to prevent flue inner exhaust gas from laminar flow occur, 5 times that are smaller than flue diameter of adjacent rotary fluid.
The technological progress that the present invention obtains is：Flue is arranged in the middle part of tower drier, by material drying and dust tail gas
Separate, prevent the pollution of material, coat heat-insulation layer outside dryer, waste heat from tail gas is fully used；The wind tower of outer barrel bottom
It ensure that hot blast is uniform even into the drying of so that raw coal；Raw coal " it " font in dryer is turned back flowing, strengthens raw coal
Drying effect；Multi-layer rotational flow body in flue enhances heat transfer effect, is advantageous to the drying of raw coal；Injection tube, peep hole and swollen
The use of swollen section, it ensure that the safe operation of dryer.
Brief description of the drawings
Fig. 1 is rotary kiln production technology schematic diagram；
Fig. 2 is schematic structural view of the invention；
Fig. 3 is partial enlarged drawing；
Fig. 4 is the dimensional structure diagram of dispenser I；
Fig. 5 is the dimensional structure diagram of dispenser II；
Fig. 6 is wind tower dimensional structure diagram；
Fig. 7 is embodiment using process diagram；
Wherein：1- preheaters, 2- rotary kilns, 3- coolers, 4- burners, 5- flues, 6- inlet exhaust gas, 7- charging apertures, outside 8-
Cylinder, 9- heat-insulation layers, 10- peep holes, 11- platforms, 12- rotary fluids, 13- annular bellows, 14- bottom hoppers, 15- offgas outlets,
16- hot wind inlets, 17- wind towers, 18- dispensers I, 19- injection tubes, 20- dispensers II, 21- expansion chambers, 22- expansion joints, 23-
Air outlet, 24- air vents, 25- ventilations ring beam, 26- blast caps, 27- communicating pipes, 28- supporting plates, 29- feed ore deposits groove, 30- vibrations
Batcher, 31- feedings bucket elevator, 32- belt feeders, 33- air blowers, 34- hot air ducts, 35- dryers deduster, 36- drying
Power traction blower fan, 37- dryer chimneys.
Embodiment
The present embodiment is the tower drier on lime rotary kiln flue, the drying for raw coal.
The tower drier concrete structure as shown in Figure 2, has inlet exhaust gas 6 and offgas outlet 15, charging aperture 7 and bottom
Portion's hopper 14, hot wind inlet 16 and air outlet 23.Flue 5 passes through among dryer, top and bottom and the outer barrel 8 of flue 5
Gu welding is fixed, expansion joint 22 is installed on the top of flue 5, using the axial elasticity of expansion joint 22 coordinate flue 5 and outer barrel 8 it
Between due to thermal expansion caused by the temperature difference, stress is reduced, to avoid the integrally-built destruction of dryer.Set in the inside of flue 5
There is a rotary fluid 12 no less than two layers, be smaller than, in 5 times of flue diameter, to force in flue 5 between rotary fluid 12
Exhaust gas flow is spinned shape advance, destroys its laminar condition, increase tail gas turbulent flow, improves tail gas and the heat transfer of flue metallic walls is imitated
Rate.
Tower drier includes flue 5, outer barrel 8, the multilayer cone dispenser I 18 and dispenser of arrangement therebetween
Ⅱ20.Dispenser I 18 is welded on the inner side of outer barrel 8, and dispenser II 20 is welded on the outside of flue 5, and both form " it " word stacking knot
Structure, uniformly it is laid between flue 5 and outer barrel 8, disperses whereabouts stream.Raw coal " it " font that completed above and below dispenser is turned back stream
It is dynamic, raw coal whereabouts flow can be increased, extend the time that raw coal contacts with dispenser, be advantageous to the abundant drying of raw coal.Spreading
Multiple air vents 24 are offered on device I 18 and dispenser II 20, as shown in Figure 4, hot blast from bottom to top can pass through air vent
24 pass through dispenser, strengthen the heat exchange with the raw coal on dispenser.On the top of each dispenser, injection tube 19 is installed,
As shown in Figure 3, many blowing mouths are offered in injection tube 19, dispenser I 18 can be blown down from the wind of blowing mouth blowout and spread
The raw coal accumulated on device II 20.
The outside of outer barrel 8 is coated with heat-insulation layer 9, prevents the heat in dryer outwards to scatter and disappear.The phase on the barrel of outer barrel 8
Answer position that peep hole 10 is set, in favor of observing flowing and accumulation situation of the raw coal on dispenser, if necessary, detachable observation
The raw coal adhered on hole 10, manual cleaning dispenser I 18 and the conical surface of dispenser II 20.Multilayer is welded with the outside of outer barrel 8 to be easy to
The platform 11 and cat ladder of observation, cleaning and maintenance.
Top design between flue and outer barrel has expansion chamber 21, and expansion chamber 21 has larger space, rises hot blast and takes
Band and the raw coal particle kicked up are settled under gravity in expansion chamber 21 because of the reduction of air-flow velocity, reduce out baking
The dustiness of dry machine air-flow, so as to reduce the live load of dryer deduster 35.
Annular bellows 13 are installed in the lower outside of outer barrel 8, annular bellows 13 connect with the wind tower 17 in outer barrel 8, wind
The structure of tower 17 as shown in Figure 5, including ventilation ring beam 25, blast cap 26, communicating pipe 27, supporting plate 28 etc., communicating pipe 27 connected ring
Shape bellows 13 and ventilation ring beam 25, supporting plate 28 are welded to connect flue and ventilation ring beam 25, play fixed support ventilation ring beam 25
Effect.Blast cap 26 is steel plate weldment, and inside has ventilating duct, is uniformly arranged on ventilation ring beam 25, plays introducing and equal
Cloth hot blast acts on.
The present embodiment is in use, as shown in Figure 6, the loaded machine of raw coal is sent into feed ore deposit groove 29, through oscillating feeder
30 and feeding bucket elevator 31 be sent into tower drier in, raw coal " it " font turn back flowing dropping process in, with flue and heat
Wind fully exchanges heat drying, falls into the bottom hopper 14 of bottom, is then transported to truck by oscillating feeder 30 and belt feeder 32,
The raw coal after drying is sent to coal dust milling station by truck.
Dryer inlet exhaust gas 6 connects the exhanst gas outlet of lime rotary kiln preheater, and offgas outlet 15 connects rotary kiln tail
Gas deduster.Removing dust meets that the tail gas of emission request is discharged into air by air-introduced machine by chimney, now the tail in chimney
Temperature degree is about 150 DEG C or so.Air blower 33 connects tail gas funnel, and the cleaning tail gas hot blast after dust removal process is through hot air duct 34
Annular bellows 13 are connected, are sent into through wind tower 17 in dryer.After hot blast dries raw coal, the air outlet 23 on drying machine top enters
Enter in dryer deduster 35, removing dust meets that the hot blast drying power traction blower fan 36 of emission request is sent into the row of dryer chimney 37
Go out.
Tower drier is provided with many places temperature pick-up sensor and pressure transmitting sensor along short transverse, for drying
The temperature and pressure of corresponding site is detected when machine works, then enters these detection data into rotary kiln automation control system
Row computing is compared, and monitors the running status of dryer system, so as to timely adjusting device Process operating parameters.
Arrangement flue, material drying and dust tail gas are separated, prevent the pollution of material in the middle part of this tower drier, are dried
Cladding heat-insulation layer, equivalent to one hot air drying stove, waste heat from tail gas are fully used outside machine；The wind tower of bottom ensure that heat
Wind is even into so as to ensure that raw coal is uniformly dried；Raw coal " it " font in dryer is turned back flowing, strengthens raw coal baking
Dry effect；Multi-layer rotational flow body in flue enhances heat transfer effect, is advantageous to the drying of raw coal；Injection tube, peep hole and expansion
The use of section, it ensure that the safe operation of dryer.
Claims (6)
- A kind of 1. tower drier that waste heat from tail gas recycles, it is characterised in that：Including outer barrel（8）, be coated on outer barrel（8）Outside The heat-insulation layer in face（9）, from the outer barrel（8）The flue that center passes through（5）, be arranged in outer barrel（8）And flue（5）Between circular cone Shape dispenser I（18）With dispenser II（20）, in the outer barrel（8）The expansion chamber of inside top design（21）, in the outer barrel （8）The annular bellows of lower outside installation（13）, positioned at outer barrel（8）Interior and annular bellows（13）The wind tower of connection（17）.
- 2. tower drier according to claim 1, it is characterised in that：The flue（5）Top expansion joint is installed （22）, flue（5）It is provided with and is no less than two layers of rotary fluid（12）.
- 3. tower drier according to claim 2, it is characterised in that：The rotary fluid（12）Be smaller than flue （5）5 times of diameter.
- 4. tower drier according to claim 1, it is characterised in that：The wind tower（17）Including ring beam of divulging information（25）、 Blast cap（26）, communicating pipe（27）And supporting plate（28）；The communicating pipe（27）Connect annular bellows（13）With ventilation ring beam（25）； The supporting plate（28）It is welded to connect flue（5）With ventilation ring beam（25）；The blast cap（26）Inside has ventilating duct, uniform cloth Put in ventilation ring beam（25）On.
- 5. tower drier according to claim 1, it is characterised in that：The dispenser I（18）With dispenser II（20） On be designed with air vent（24）, in the dispenser I（18）With dispenser II（20）Upper end injection tube is installed（19）.
- 6. tower drier according to claim 1, it is characterised in that：In the outer barrel（8）On peep hole is installed （10）And platform（11）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710637359.3A CN107576190B (en) | 2017-07-31 | 2017-07-31 | A kind of tower drier that waste heat from tail gas recycles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710637359.3A CN107576190B (en) | 2017-07-31 | 2017-07-31 | A kind of tower drier that waste heat from tail gas recycles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107576190A true CN107576190A (en) | 2018-01-12 |
| CN107576190B CN107576190B (en) | 2019-08-06 |
Family
ID=61035184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710637359.3A Active CN107576190B (en) | 2017-07-31 | 2017-07-31 | A kind of tower drier that waste heat from tail gas recycles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107576190B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109141000A (en) * | 2018-08-02 | 2019-01-04 | 巴红宇 | A kind of weaving drying unit with function of recovering waste heat |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2911570Y (en) * | 2006-03-20 | 2007-06-13 | 唐德顺 | Afterheat utilizing dryer |
| CN101520274A (en) * | 2009-04-08 | 2009-09-02 | 主父仲凯 | Tower-type dryer |
| CN201343523Y (en) * | 2009-01-20 | 2009-11-11 | 广州市宇联机电有限公司 | Multi-wind-distribution fixed bed biomass gasification furnace |
| CN201514093U (en) * | 2009-08-19 | 2010-06-23 | 淮安市捷达粮食设备有限公司 | Multi-element heating stacked grain drying device |
| CN101936648A (en) * | 2010-09-26 | 2011-01-05 | 中冶焦耐(大连)工程技术有限公司 | Humidifier for uniformly drying coking coal of different particle diameters by using hot flue gas of coke furnace |
| CN102322732A (en) * | 2011-08-31 | 2012-01-18 | 辽宁禹华环保设备有限公司 | Falling body type garbage hot air drying machine |
| CN102419079A (en) * | 2011-11-11 | 2012-04-18 | 中国科学院工程热物理研究所 | Solid particle material composite grading and drying device and method |
| CN203100414U (en) * | 2013-03-04 | 2013-07-31 | 河南省德耀节能科技有限公司 | High-efficiency vertical type dryer |
| CN203203361U (en) * | 2013-04-11 | 2013-09-18 | 李建平 | Vertical drying machine for granular materials |
| WO2014021501A1 (en) * | 2012-07-30 | 2014-02-06 | 한국에너지기술연구원 | Multiple back-flow baffle plate drier and drying method for drying high moisture coal |
| CN203657397U (en) * | 2014-01-06 | 2014-06-18 | 新乡仲德能源科技有限公司 | Drainable vertical dryer |
| CN105992924A (en) * | 2014-02-13 | 2016-10-05 | Ctb有限公司 | Hybrid continuous flow grain dryer |
-
2017
- 2017-07-31 CN CN201710637359.3A patent/CN107576190B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2911570Y (en) * | 2006-03-20 | 2007-06-13 | 唐德顺 | Afterheat utilizing dryer |
| CN201343523Y (en) * | 2009-01-20 | 2009-11-11 | 广州市宇联机电有限公司 | Multi-wind-distribution fixed bed biomass gasification furnace |
| CN101520274A (en) * | 2009-04-08 | 2009-09-02 | 主父仲凯 | Tower-type dryer |
| CN201514093U (en) * | 2009-08-19 | 2010-06-23 | 淮安市捷达粮食设备有限公司 | Multi-element heating stacked grain drying device |
| CN101936648A (en) * | 2010-09-26 | 2011-01-05 | 中冶焦耐(大连)工程技术有限公司 | Humidifier for uniformly drying coking coal of different particle diameters by using hot flue gas of coke furnace |
| CN102322732A (en) * | 2011-08-31 | 2012-01-18 | 辽宁禹华环保设备有限公司 | Falling body type garbage hot air drying machine |
| CN102419079A (en) * | 2011-11-11 | 2012-04-18 | 中国科学院工程热物理研究所 | Solid particle material composite grading and drying device and method |
| WO2014021501A1 (en) * | 2012-07-30 | 2014-02-06 | 한국에너지기술연구원 | Multiple back-flow baffle plate drier and drying method for drying high moisture coal |
| CN203100414U (en) * | 2013-03-04 | 2013-07-31 | 河南省德耀节能科技有限公司 | High-efficiency vertical type dryer |
| CN203203361U (en) * | 2013-04-11 | 2013-09-18 | 李建平 | Vertical drying machine for granular materials |
| CN203657397U (en) * | 2014-01-06 | 2014-06-18 | 新乡仲德能源科技有限公司 | Drainable vertical dryer |
| CN105992924A (en) * | 2014-02-13 | 2016-10-05 | Ctb有限公司 | Hybrid continuous flow grain dryer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109141000A (en) * | 2018-08-02 | 2019-01-04 | 巴红宇 | A kind of weaving drying unit with function of recovering waste heat |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107576190B (en) | 2019-08-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108330233B (en) | Liquid slag dry centrifugal granulation and waste heat recovery system with slag caching and flow control functions | |
| CN108359756B (en) | Dry centrifugal granulation and waste heat recycling system for liquid slag | |
| CN103373822B (en) | Light calcined magnesia powder calcination device | |
| CN101755903B (en) | Energy-efficient grain dryer | |
| CN206531370U (en) | A kind of drum-type drying, sintering or calciner | |
| CN104803618B (en) | annular lime shaft kiln | |
| CN109970375A (en) | A kind of building gypsum plaster production line | |
| CN108164161A (en) | A kind of extra light calcined magnesia suspended state calcination system and preparation method of magnesia | |
| CN201630195U (en) | Energy-saving high-efficiency grain drier | |
| CN101755904B (en) | Energy-saving grain drying equipment | |
| CN106746769A (en) | Upright active lime calcining furnace | |
| CN104833203B (en) | A kind of heat accumulating type installation for calcining cement | |
| CN217442246U (en) | Granular material calcining system for vertical preheater-rotary kiln-vertical cooler block | |
| CN107576190A (en) | The tower drier that a kind of waste heat from tail gas recycles | |
| CN211012481U (en) | Vertical preheater | |
| CN104359300B (en) | A kind of drying and calcining machining center | |
| CN104180634A (en) | Concentrate drying system and concentrate drying method of dryer of rotary kiln | |
| CN204550403U (en) | Annular lime shaft kiln | |
| CN110631378A (en) | Vertical preheater | |
| CN202008278U (en) | Gravity type baking dryer | |
| CN216347853U (en) | Vertical preheater and granular material calcining system of vertical preheater-rotary kiln-vertical cooler block | |
| CN216448610U (en) | Rotary kiln for calcining block granular materials and vertical preheater-rotary kiln-vertical cooler block granular material calcining system | |
| CN2814286Y (en) | Circulating fluidized bed furnace | |
| CN2666909Y (en) | Energy-saving environment protection active lime burning-in shaft kiln | |
| CN207894257U (en) | Heat exchange shaft kiln |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |