CN202938592U - Steam fluidized bed drying device - Google Patents
Steam fluidized bed drying device Download PDFInfo
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- CN202938592U CN202938592U CN 201220610854 CN201220610854U CN202938592U CN 202938592 U CN202938592 U CN 202938592U CN 201220610854 CN201220610854 CN 201220610854 CN 201220610854 U CN201220610854 U CN 201220610854U CN 202938592 U CN202938592 U CN 202938592U
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- coal
- fluidized bed
- steam
- drying device
- drying
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- 238000001035 drying Methods 0.000 title claims abstract description 94
- 239000003245 coal Substances 0.000 claims abstract description 72
- 238000012216 screening Methods 0.000 claims description 19
- 238000013467 fragmentation Methods 0.000 claims description 15
- 238000006062 fragmentation reaction Methods 0.000 claims description 15
- 239000012717 electrostatic precipitator Substances 0.000 claims description 11
- 239000002994 raw material Substances 0.000 claims description 7
- 238000007600 charging Methods 0.000 claims description 4
- 238000000605 extraction Methods 0.000 claims description 2
- 239000003077 lignite Substances 0.000 abstract description 27
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 7
- 239000003546 flue gas Substances 0.000 description 7
- 239000002245 particle Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 238000005243 fluidization Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 235000011194 food seasoning agent Nutrition 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000003415 peat Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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- Drying Of Solid Materials (AREA)
Abstract
The utility model relates to a steam fluidized bed drying device comprising a drying machine (6), an adjusting valve (10), an ejector (11) and a draught fan (12), wherein the adjusting valve (10) and the ejector (11) are parallel to the draught fan (12) and are respectively communicated with the drying machine (6). The device is particularly suitable for drying low-rank coal such as brown coal and the like, and has the advantages of energy saving, environment friendliness and the like.
Description
Technical field
The utility model relates to a kind of steam fluidized bed drying device, and described device is particularly useful for the drying of the low-order coal such as brown coal.
Background technology
Low-order coal refers to the coal that degree of metamorphism is lower, comprise the coals such as brown coal, jet coal, dross coal and weakly caking coal, wherein especially more with the brown coal proportion, global brown coal oil in place is about 4,000,000,000,000 tons, statistics according to last century end, China is existing verifies 1,300 hundred million tons of brown coal reserves, accounts for 13% left and right of national coal gross reserves.Brown coal are that peat deposition changes the initial stage product of organic-biological rock into by dehydration, compacting, because appearance is brown or crineous is gained the name.Brown coal have the characteristics such as high volatile, high-moisture, high ash content, low heat value, low ash smelting point, and its storage transportation and processing and utilization are caused very large adverse effect.In order better to utilize the low-order coal resource such as brown coal, must carry out drying to it and process.
Brown coal drying belongs to a kind of of the slight upgrading of brown coal, is different from the degree of depth upgrading of brown coal, and dry purpose just reduces the content of moisture in brown coal and can not allow the materials such as fugitive constituent, tar separate out.The present industrial drying means that mainly contains three types: flue gas drying method (for example CN101294765A), steam pipe type seasoning (for example CN101498546) and steam fluid-bed drying (for example CN101581533A).The different equipment of the corresponding use of distinct methods.The flue gas drying method is mainly to utilize high-temperature flue gas and brown coal direct heat transfer to carry out drying, this kind technique flue-gas temperature is higher, directly to contact danger larger with brown coal, be very easy to occur the situations such as detonation, and because the heat that utilizes is the sensible heat of flue gas, often need a large amount of circulating flue gas, this has increased the burden of equipment greatly.The steam pipe type seasoning is a kind of drying means of the indirect take superheated steam as heat medium, the Topography brown coal that this technology utilization steam-condensation discharges, and energy consumption is higher, and the tail gas discharge capacity is larger.Steam fluidized bed type seasoning be allow coal under fluidized state by with superheated steam direct heat transfer, the drying middle moisture that produces coal, and utilize vapour compression machine (heat pump) recovered steam used heat, but the manufacturing of recovered steam heat pump used difficulty comparatively.
The utility model content
The utility model is dealt with problems and is:
Overcome the drawback that must adopt vapour compression machine in the steam fluidized bed drying device.
The utility model designer has designed a kind of new steam fluidized bed drying device through broad research.
A purpose of the present utility model is to provide a kind of steam fluidized bed drying device, and it is applicable to the drying of the low-order coal such as brown coal.
The utility model can adopt following steam fluidized bed drying device:
1, a kind of steam fluidized bed drying device is characterized in that comprising drying machine 6, regulates valve 10, injector 11 and blower fan 12, wherein regulates valve 10 and injector 11 and is communicated with respectively side by side drying machine 6 with blower fan 12 together.
The dry run of the utility model drying device is;
Produce fluid effect under the effect of the steam that broken coal is blown in drying machine 6 bottoms, and simultaneously carry out heat exchange with the heat exchanger tube of drying machine 6 inside, make the moisture in coal be evaporated the purpose that reaches dry by heat exchange, dried coal is delivered to next unit from drying machine 6 bottoms, the water vapour that drying goes out from coal is two-way, one the tunnel enters injector 11 through regulating valve 10, and temperature and pressure is promoted under the ejector action of middle pressure steam, loops back in the drying tube of drying machine 6 and provides heat for drying; The pressurized circulation of blower fan 12 is passed through to drying machine 6 in another road, is blown into by the bottom, for raw coal provides fluidisation power.
2, according to the steam fluidized bed drying device of embodiment 1, its also comprise be positioned at drying machine 6 after, regulate cyclone separator 7, sack cleaner 8 and/or electrostatic precipitator 9 before valve 10 and blower fan 12.
Cyclone separator 7, sack cleaner 8 and/or electrostatic precipitator 9 are used for removing the dust of water vapour.
3, according to the steam fluidized bed drying device of embodiment 1 or 2, it also comprises for the broken coal storehouse 5 that broken coal is provided to drying machine 6.
Broken coal storehouse 5 is used for the storage broken coal, the broken coal raw material is provided for drying machine 6.
4, according to the steam fluidized bed drying device of embodiment 1-3 any one, it comprises also that to the broken coal storehouse 5 provide fragmentation and the screening system 2 of broken coal.
Fragmentation and screening system 2 are used for the coal raw material of large particle diameter is converted to broken coal.
5, according to the steam fluidized bed drying device of embodiment 1-4 any one, it also comprises to the conveyer 1 of fragmentation and screening system 2 conveying coal raw materials.
Conveyer 1 is used for carrying continuously the coal raw material.
6, according to the steam fluidized bed drying device of embodiment 5, it also comprises to conveyer 3 and/or fragmentation and the screening system 4 of broken coal storehouse 5 assisted Extractions for broken coals.
Conveyer 3 and/or fragmentation and screening system 4 is used for further the coal raw material of large particle diameter being converted to broken coal in the situation that fragmentation and screening system 2 can not be fully be converted to broken coal with the coal raw material of large particle diameter.
7, according to the steam fluidized bed drying device of embodiment 1-3 any one, wherein broken coal storehouse 5 and/or drying machine 6 are independently of one another with one or more discharge valves 13.
8, according to the steam fluidized bed drying device of embodiment 1-7 any one, wherein broken coal storehouse 5, drying machine 6, cyclone separator 7, sack cleaner 8 and/or electrostatic precipitator 9 are put with one or two companion's hot charging independently of one another.
Companion's hot charging is put for optionally being broken coal storehouse 5, drying machine 6, cyclone separator 7, sack cleaner 8 and/or electrostatic precipitator 9 heat supplies.
9, according to the steam fluidized bed drying device of embodiment 1-8 any one, it adopts continuous mode of operation.
As preferred technical scheme of the utility model, steam fluidized bed drying device of the present utility model, connected mode as described in Figure 1 comprises primary conveyor 1, one-level fragmentation and screening system 2, two-stage conveying machine 3, two-stage crushing and screening system 4, broken coal storehouse 5, drying machine 6, cyclone separator 7, sack cleaner 8, electrostatic precipitator 9, regulates valve 10, injector 11, blower fan 12, discharge valve 13.
The utility model compared with prior art has following one or more beneficial effect:
1. from the principle of drying, the utility model carries out indirect heat exchange with the steam of drying tube inside by low-order coal such as brown coal under the state of fluidisation, thereby realize the drying of brown coal, whole dry run has not only comprised the direct heat transfer of fluidization steam vapor and brown coal but also has comprised the indirect heat exchange of the interior steam of drying tube and brown coal, and heating efficiency is higher.
2. for the energy consumption that has technique now, every drying goes out 1kg moisture, the flue gas drying method 3500KJ that need consume energy, the steam pipe type drying means 4300KJ that need consume energy, and the moisture that the utility model utilizes the steam ejector recovery section to evaporate from raw coal allows this part water vapour recycle and emit heat, greatly reduces system energy consumption, every drying goes out 1kg moisture power consumption 2100KJ, and is energy-conservation more than 40%.
3. the utility model utilization is that steam carries out drying to low-order coal such as brown coal, and system's running temperature is 150 ℃ of left and right, and the useful volatilization composition of brown coal can not separated out, and does not more have the danger of burning or blast.
4. because the utility model origin of heat is the latent heat that the liquefaction of drying tube steam inside is emitted, relatively utilize the drying process of medium sensible heat, the required thermal source flow of the utility model is little, and the equipment power dissipation in system is low.
5. the related steam ejector of the utility model is industrial widely used mature equipment, simplicity of design, and without any rotatable parts, need not external drive equipment.
6. the water utilization steam ejector that evaporates from the low-order coal such as brown coal carries out recycling, therefore make the utility model without the discharging of dusty gas, the discharging of part steam condensate is only arranged, and this part moisture can carry out waste water recovery, environmentally safe.
Description of drawings
Fig. 1 is steam ejection fluidized bed coal drying device figure.
Fig. 2 is the steam ejection fluidized bed coal drying device figure of continuous operation.
Reference numeral is:
1: primary conveyor, 2: one-level fragmentation and screening system, 3: two-stage conveying machine, 4: two-stage crushing and screening system, 5: the broken coal storehouse, 6: drying machine, 7: cyclone separator, 8: sack cleaner, 9: electrostatic precipitator, 10: regulate valve, 11: injector, 12: blower fan, 13: discharge valve
The specific embodiment
As preferred technical scheme of the utility model, as shown in Figure 2, steam ejection fluid bed brown coal drying device comprises primary conveyor 1, one-level fragmentation and screening system 2, two-stage conveying machine 3, two-stage crushing and screening system 4, broken coal storehouse 5, drying machine 6, cyclone separator 7, sack cleaner 8, electrostatic precipitator 9, regulates valve 10, injector 11, blower fan 12, discharge valve 13.
low order raw coal for example brown coal passes through primary conveyor 1, be delivered to the one-level fragmentation and screening system 2 carries out fragmentation and screening, at first raw coal sieves in this system, particle diameter is sieved out less than the raw coal of 3mm directly deliver to broken coal storehouse 5, particle diameter is crushed to below 10mm by coal breaker greater than 3mm's, and be delivered to two-stage crushing and screening system 4 by two-stage conveying machine 3, this system is identical with one-level fragmentation and screening system 2 principles, at first raw coal is sieved, particle diameter is sieved out less than the raw coal of 3mm directly deliver to broken coal storehouse 5, particle diameter is crushed to below 3mm by coal breaker and delivers to broken coal storehouse 5 greater than 3mm's.broken coal in broken coal storehouse 5 passes through discharge valve 13 dischargings to drying machine 6, produce fluid effect under the effect of the steam that is blown in drying machine 6 bottoms, and simultaneously carry out heat exchange with the heat exchanger tube of drying machine 6 inside, make the moisture in coal be evaporated the purpose that reaches dry by heat exchange, dried coal is delivered to next unit through the discharge valve 13 of drying machine 6 bottoms, the water vapour that drying goes out from coal is through cyclone separator 7, sack cleaner 8, be divided into two-way after the dedusting of electrostatic precipitator 9, one the tunnel enters injector 11 through regulating valve 10, temperature and pressure is promoted under the ejector action of middle pressure steam, loop back in the drying tube of drying machine 6 and provide heat for drying.The pressurized circulation of blower fan 12 is passed through to drying machine 6 in another road, is blown into by the bottom, for raw coal provides fluidisation power.
Native system preferably adopts continuous mode of operation, and the equipment such as broken coal storehouse 5, drying machine 6, cyclone separator 7, sack cleaner 8 and electrostatic precipitator 9 are preferably all established companion's hot charging and put.
Many drawbacks such as steam ejection fluid bed brown coal drying technique can avoid effectively that existing drying means energy consumption is high, discharge capacity large, dangerous high and system complex, the creative technique that proposes to use the injector recovered steam, solve vapour compression machine because being difficult to make the problem that can't realize, greatly reduced the energy consumption of system.
Claims (2)
1. steam fluidized bed drying device, it is characterized in that comprising drying machine (6), regulate valve (10), injector (11) and blower fan (12), wherein regulate valve (10) and injector (11) and be communicated with respectively side by side drying machine (6) with blower fan (12) together.
2. according to the steam fluidized bed drying device of claim 1, its also comprise be positioned at drying machine (6) afterwards, regulate valve (10) and blower fan (12) cyclone separator (7), sack cleaner (8) and/or electrostatic precipitator (9) before.
3. according to the steam fluidized bed drying device of claim 2, it also comprises for the broken coal storehouse (5) of broken coal is provided to drying machine (6).
4. according to the steam fluidized bed drying device of claim 3, it also comprises fragmentation and the screening system (2) that broken coal is provided to broken coal storehouse (5).
5. according to the steam fluidized bed drying device of claim 4, it also comprises to the conveyer (1) of fragmentation and screening system (2) conveying coal raw material.
6. according to the steam fluidized bed drying device of claim 5, it also comprises to conveyer (3) and/or fragmentation and the screening system (4) of broken coal storehouse (5) assisted Extraction for broken coal.
7. according to the steam fluidized bed drying device of claim 3, wherein broken coal storehouse (5) and/or drying machine (6) are independently of one another with one or more discharge valves (13).
8. according to the steam fluidized bed drying device of claim 3, wherein broken coal storehouse (5), drying machine (6), cyclone separator (7), sack cleaner (8) and/or electrostatic precipitator (9) are put with one or more companion's hot chargings independently of one another.
9. according to the steam fluidized bed drying device of claim 1-8 any one, it adopts continuous mode of operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220610854 CN202938592U (en) | 2012-11-18 | 2012-11-18 | Steam fluidized bed drying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220610854 CN202938592U (en) | 2012-11-18 | 2012-11-18 | Steam fluidized bed drying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202938592U true CN202938592U (en) | 2013-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220610854 Expired - Lifetime CN202938592U (en) | 2012-11-18 | 2012-11-18 | Steam fluidized bed drying device |
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| Country | Link |
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| CN (1) | CN202938592U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103756698A (en) * | 2014-01-22 | 2014-04-30 | 鞍山兴德工程技术有限公司 | Low-grade coal gas flow injection dense-phase quick dry distillation upgrading method and system |
| CN103822440A (en) * | 2012-11-18 | 2014-05-28 | 航天长征化学工程股份有限公司 | steam fluidized bed drying device and drying method |
-
2012
- 2012-11-18 CN CN 201220610854 patent/CN202938592U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103822440A (en) * | 2012-11-18 | 2014-05-28 | 航天长征化学工程股份有限公司 | steam fluidized bed drying device and drying method |
| CN103756698A (en) * | 2014-01-22 | 2014-04-30 | 鞍山兴德工程技术有限公司 | Low-grade coal gas flow injection dense-phase quick dry distillation upgrading method and system |
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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: 20130515 |
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| CX01 | Expiry of patent term |