CN201560175U - Airflow classifying and drying device for coking coal - Google Patents
Airflow classifying and drying device for coking coal Download PDFInfo
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- CN201560175U CN201560175U CN2009202034863U CN200920203486U CN201560175U CN 201560175 U CN201560175 U CN 201560175U CN 2009202034863 U CN2009202034863 U CN 2009202034863U CN 200920203486 U CN200920203486 U CN 200920203486U CN 201560175 U CN201560175 U CN 201560175U
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Abstract
The utility model relates to an airflow classifying and drying device for coking coal. The device comprises a vibrating fluidized bed main body and a classifying collection device, wherein the vibrating fluidized bed main body comprises a primary air supply device, a main vibrating box body with an air distribution plate, a settling classification section and a drying section with a secondary air inlet, and the primary air supply device, the main vibrating box body with the air distribution plate, the settling classification section and the drying section with the secondary air inlet are respectively connected from down to up. The utility model has the benefits that the airflow classifying and drying device can save the energy, reduce the amount of waste water generated during the coking process, reduce the environmental pollution and improve the production capacity of the coke oven.
Description
Technical field
The utility model relates to a kind of classification and dry device that carries out simultaneously of coal charge, and particularly a kind of employing fluidization principle is combined pneumatic separation and air stream drying coking coal materials is carried out with time stage and exsiccant device.
Background technology
The general water content of coking coal is about 8～10%.When maximum more than 14%.Coal charge moisture fluctuates when big in the process of coking, will influence the ordinary production operation and reduces the coke oven life-span.Enter in the coal charge of pit kiln moisture in process of coking, be condensed into phenolic wastewater after discharging with coal gas with the form of water vapor.If enter pit kiln again after the drying dehydration of coal charge elder generation, not only can save coke oven and add heating gas, shorten coking time, reduce the efflux wastewater amount, also, the coal charge drying increases because of can making bulk density, increase the pit kiln coal capacity.According to the data introduction, coal charge moisture drying to 6～7% o'clock, it is about 10% to increase production coke, and can go into weak cementability coal 10～15% by polygamy.
At present, existing coal dry technology has a variety of, mainly contains the fluidized bed dryer, multiple with fluidized bed dryer, shake (shaking) movable bed moisture eliminator, vertical axis moisture eliminator, the moving bed dryer etc. of spouted bed of the whizzer that coal charge and drying medium directly contact, the rotary pipe type moisture eliminator of indirect heating, the room dryer of belt stirrer, upright tubular type pneumatic dryer, stationary cloth aerofoil.Above-listed the whole bag of tricks all because of there is deficiency in one aspect in it, all fails to monopolize the dry field of coal.Used drying medium has special-purpose combustion exhaust, stack gas and water vapor etc.
The utility model content
The purpose of this utility model provides a kind of air classification and Pneumatic drying device of coking coal materials, and this device adopts fluidization technology to realize the coal charge drying, and utilizes the pneumatic separation principle to make coal charge what be divided into by granular size simultaneously at exsiccant.This device can be handled without the coal charge of pulverizing, and makes the coal charge exsiccant simultaneously, and the small-particle coal charge that need not pulverize is separated with the macrobead coal charge that needs to pulverize, and can alleviate the load of pulverizer, and avoid coal charge to cross pulverizing.This device can also be handled the coal charge of having pulverized, makes the coal charge exsiccant simultaneously, and the coal dust separation of fines in the coal charge is handled in addition, can improve the coking technique environment, reduces coal dust harm.
For achieving the above object, the utility model is achieved through the following technical solutions:
The air classification of coking coal materials and Pneumatic drying device, it is characterized in that, this device comprises fluidisation vibrating bed main body and classification collection device, and fluidisation vibrating bed main body is connected to form from bottom to top by the dryer section of air-supply arrangement, the vibration main box of being with air distribution plate, classification of sedimentation section and a band secondary air.
The intravital air distribution plate of described vibration main tank vibrates with main box, vibration main box air distribution plate top is divided into two groups of zones that function is different along the material working direction with overflow weir and subregion dividing plate, air distribution plate top region intermediate is the mainstreaming district, and two side areas is classification dry materials district.
For preventing that small particles material from discharging from the air distribution plate back outlet with the fluidisation material,, establish the discharge port skimming baffle on it at the zone of silence that classification dry materials district is provided with not open ventilation hole.
Described main box air distribution plate percentage of open area is an adjustable structure, adopts detachable plug-hole parts, according to different requirements, changes the quantity and the distributing position of ventilation hole arbitrarily.
Described classification of sedimentation section cross section adopts the flaring structure, and fluidizing velocity is reduced gradually.
Compared with prior art, the beneficial effects of the utility model are:
1) saves the energy.Drying installation adopts coke oven flue waste gas, belongs to the used heat utilization;
2) reduce the wastewater flow rate that process of coking produces.Reduce environmental pollution;
3) throughput of coke oven can be improved, the investment of founding the factory can be saved;
4) the atomic thin coal dust of energy selective recovery, a large amount of flying dust also can improve the operation of coal gas refining system in the time of can avoiding coke oven coal-charging, reduce coke tar refuse.
Description of drawings
Fig. 1 is the utility model basic block diagram;
Fig. 2 is a fluidisation vibrating bed structural front view;
Fig. 3 is a sulfuration vibrating bed structure side view;
Fig. 4 is a fluidisation vibrating bed main box structure iron.
Among the figure: 1-vibration main box 2-is flexible coupling and encloses an air-supply arrangement 5-of 3-intermediate connector 4-bulky grain outlet 6-classification of sedimentation section 7-middle part downflow weir 8-discharging opening skimming baffle 9-fine grained dryer section 10-granule outlet 11-dry materials district 12-mainstreaming district 13-backward channel 14-perforated distributor 15-secondary air inlet 16-subregion dividing plate 17-surge bunker 18-metering device 19-raw material material-throwing device 20-fluidized vibrating bed main body 21-graded collecting device 22-allocation of the amount of air device 23-fluidized air blower 24-dedusting air-introduced machine
Embodiment
The air classification of coking coal materials and Pneumatic drying device utilize the characteristic of bulk material in fluidized state, and this device has coking coal materials classification and exsiccant dual-use function.Can adapt to various requirement by adjusting scantlings of the structure and fluidizing velocity.
Seeing Fig. 1, is that the utility model device is made up of fluidisation vibrating bed main body and classification collection device two portions.The drying of coal charge and preliminary classification are finished in the fluidisation vibrating bed; Short grained classification is again finished by the classification collection device.Its classification and drying process are described below:
Coal charge enters fluidisation vibrating bed main body 20 by surge bunker 17 through metering device 18 and raw material material casting device 19, and coal charge is under the fluidizing gas effect, and is dry also by the size separated into two parts.The macrobead coal charge is discharged by bottom coal charge outlet 5, and the small-particle coal charge is discharged with dry gas by top relief outlet 10 (see figure 2)s, enters classification collection device 21.The classification collection device can be according to the different requirements of technology to size grading, select for use one group or several groups of different cleaning apparatuss of structure to finish the final collection and the classification again of small particles material.A wind (flue gas) is fed by fluidisation blower fan 23, enters fluidisation vibrating bed main body 20 through air quantity distribution device 22.Flue gas after classified collection device 21 is handled enters atmosphere or sends chimney back to through the dedusting induced draft fan.
See Fig. 2, Fig. 3, fluidisation vibrating bed main body is made up of the fine particle dryer section 9 of air-supply arrangement 4, the vibration main box 1 of being with perforated distributor 14, classification of sedimentation section 6 and a band secondary air.
Main box adopts vibrational structure, can handle sneak in the coal charge can not the fluidizing oversize granule, avoid that the oversize granule material accumulates in the fixed air distribution plate fluidized-bed; Can also shake looses is formed the major diameter granule by a plurality of small-particles by the water bonding.
Main box air distribution plate top is divided into two groups of zones that function is different along the material working direction with overflow weir 7 and subregion dividing plate 16.Air distribution plate top region intermediate is mainstreaming district 12, and two side areas is classification dry materials district 11.Two districts cross section gas speed is different.The high cycle speed in mainstreaming district 12, the voidage of fluidisation material is big; Classification dry materials district 11 utilizes wall effect to collect to have divided stage material and made it dry, and the gas speed of local area is low, its objective is the local area material is excessively flown upward.
Classification of sedimentation section 6 cross sections adopt the flaring structure, and fluidizing velocity is reduced gradually, are convenient to separate.
The dryer section 9 of band secondary air is established the one group secondary wind inleting tube 15 identical with prevailing wind direction, mends remaining dry air quantity.Can reduce the air quantity of vibration main box 1, can reduce equipment size, save installation cost and operational cost.
Fig. 4 is a fluidisation vibrating bed main box structure iron.After feeding fluidisation vibrating bed main body for the coal charge of first crushed after being dried by worm conveyor, in motion forward in mainstreaming district 12 under the constraint of subregion dividing plate 16.The control air distribution plate cross section wind speed of next time blowing makes it the critical fluidization velocity 1.5m/s greater than particle diameter 10mm, and less than the terminal fluidizing velocity 7.5m/s of particle diameter 3mm.But coal charge is divided into fluidized material and can not fluidized material two portions.Can not fluidized material be＞very big particle among the 10mm, form fixed bed, be subjected to vibration force to promote dry limit, limit and advance.But the material of＜10mm is a fluidized material, becomes voidage and be 0.7～0.9 quick fluidized under wind effect.There is typical annular flow in fast fluidized bed.(being mainstreaming district 12) based on upward movement in the central section, at the nearside (being dry materials district 11) of wall based on katabatic drainage.Because the wall effect of above-mentioned fluidized is divided into two groups by overflow weir 7 again with the katabatic drainage material.The centre is a larger particles, and both sides are than small-particle.Air distribution plate mainstreaming district 12 percentage of open area are big, and both sides dry materials district 11 percentage of open area are little.The cross section wind speed of both sides is little, and material is fallen into two rear flank, removes sub-fraction and gets back to mainstreaming district 12 through backward channel 13 recirculation, finishes drying process in most of dry materials district 11.This kind partition method can alleviate fluidisation with air quantity and reduction blast, saves the blower fan power consumption.Above the macrobead relief outlet 5 of vibration main box 1, also establish discharge port and separate plate washer 8, can stop＜material of 3mm discharges.＜3mm rises to settlement separate section and separates with＞3mm material under wind effect.
The processing mechanism of pulverizing the after drying coal charge is same as described above, as with 0.3mm as grade scale, fluidisation vibrating bed main box cross section wind speed should be greater than 1.5m/s.
This device increases the vibrating transportation function, and forming lower floor is the joint institution of fluidized-bed for vibration moving-bed, upper strata.Available selectivity fluidizing velocity makes only part fluidisation of material, to save the fluidisation energy expenditure.And different according to classification with dry institute required airflow, adopt air intake twice, further save the fluidisation energy expenditure.Be that a kind of novel pneumatic separation and air stream drying are combined carried out with time stage and exsiccant device coking coal materials.
Claims (5)
1. the air classification of coking coal materials and Pneumatic drying device, it is characterized in that, this device comprises fluidisation vibrating bed main body and classification collection device, and fluidisation vibrating bed main body is connected to form from bottom to top by the dryer section of air-supply arrangement, the vibration main box of being with air distribution plate, classification of sedimentation section and a band secondary air.
2. the air classification of coking coal materials according to claim 1 and Pneumatic drying device, it is characterized in that, the intravital air distribution plate of described vibration main tank vibrates with main box, vibration main box air distribution plate top is divided into two groups of zones that function is different along the material working direction with overflow weir and subregion dividing plate, air distribution plate top region intermediate is the mainstreaming district, and two side areas is classification dry materials district.
3. the air classification of coking coal materials according to claim 1 and Pneumatic drying device, it is characterized in that, for preventing that small particles material from discharging from the air distribution plate back outlet with the fluidisation material,, establish the discharge port skimming baffle on it at the zone of silence that classification dry materials district is provided with not open ventilation hole.
4. the air classification of coking coal materials according to claim 1 and Pneumatic drying device is characterized in that, described main box air distribution plate percentage of open area is an adjustable structure, adopts detachable plug-hole parts.
5. the air classification of coking coal materials according to claim 1 and Pneumatic drying device is characterized in that, described classification of sedimentation section cross section adopts the flaring structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202034863U CN201560175U (en) | 2009-09-18 | 2009-09-18 | Airflow classifying and drying device for coking coal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202034863U CN201560175U (en) | 2009-09-18 | 2009-09-18 | Airflow classifying and drying device for coking coal |
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| CN201560175U true CN201560175U (en) | 2010-08-25 |
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| CN2009202034863U Expired - Lifetime CN201560175U (en) | 2009-09-18 | 2009-09-18 | Airflow classifying and drying device for coking coal |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101974344A (en) * | 2010-11-12 | 2011-02-16 | 中冶焦耐(大连)工程技术有限公司 | Drying process for humidifying coals by using coke oven flue gas and device |
| CN102041012A (en) * | 2010-12-28 | 2011-05-04 | 青岛利物浦环保科技有限公司 | Full-fluidized jet fluidized bed damping machine and novel damping process |
| CN102311745A (en) * | 2011-04-02 | 2012-01-11 | 中冶焦耐(大连)工程技术有限公司 | Whole-boiling vibration push-type coal humidifying device |
| CN102311746A (en) * | 2011-04-02 | 2012-01-11 | 中冶焦耐(大连)工程技术有限公司 | Full-boiling vibration propelled coal humidifying and grading process |
| 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 |
| CN107974264A (en) * | 2017-12-25 | 2018-05-01 | 武汉钢铁有限公司 | Bulk material pneumatic conveying drying grading plant and method |
-
2009
- 2009-09-18 CN CN2009202034863U patent/CN201560175U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101974344A (en) * | 2010-11-12 | 2011-02-16 | 中冶焦耐(大连)工程技术有限公司 | Drying process for humidifying coals by using coke oven flue gas and device |
| CN101974344B (en) * | 2010-11-12 | 2013-08-07 | 中冶焦耐(大连)工程技术有限公司 | Drying process for humidifying coals by using coke oven flue gas and device |
| CN102041012A (en) * | 2010-12-28 | 2011-05-04 | 青岛利物浦环保科技有限公司 | Full-fluidized jet fluidized bed damping machine and novel damping process |
| CN102311745A (en) * | 2011-04-02 | 2012-01-11 | 中冶焦耐(大连)工程技术有限公司 | Whole-boiling vibration push-type coal humidifying device |
| CN102311746A (en) * | 2011-04-02 | 2012-01-11 | 中冶焦耐(大连)工程技术有限公司 | Full-boiling vibration propelled coal humidifying and grading process |
| 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 |
| CN107974264A (en) * | 2017-12-25 | 2018-05-01 | 武汉钢铁有限公司 | Bulk material pneumatic conveying drying grading plant and method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100825 |
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| CX01 | Expiry of patent term |