CN202675799U - Semi-closed self-inert type vibration fluidized drying system - Google Patents
Semi-closed self-inert type vibration fluidized drying system Download PDFInfo
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- CN202675799U CN202675799U CN 201220301437 CN201220301437U CN202675799U CN 202675799 U CN202675799 U CN 202675799U CN 201220301437 CN201220301437 CN 201220301437 CN 201220301437 U CN201220301437 U CN 201220301437U CN 202675799 U CN202675799 U CN 202675799U
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- 238000001035 drying Methods 0.000 title claims abstract description 194
- 239000011261 inert gas Substances 0.000 claims abstract description 122
- 239000007789 gas Substances 0.000 claims abstract description 113
- 238000004880 explosion Methods 0.000 claims abstract description 15
- 238000002485 combustion reaction Methods 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 60
- 238000007664 blowing Methods 0.000 claims description 42
- 238000002955 isolation Methods 0.000 claims description 35
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 30
- 229910052760 oxygen Inorganic materials 0.000 claims description 30
- 239000001301 oxygen Substances 0.000 claims description 30
- 238000005243 fluidization Methods 0.000 claims description 20
- 230000035939 shock Effects 0.000 claims description 11
- 238000013022 venting Methods 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 6
- 238000012806 monitoring device Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 16
- 238000005265 energy consumption Methods 0.000 abstract 1
- 239000003245 coal Substances 0.000 description 28
- 239000000428 dust Substances 0.000 description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 239000002817 coal dust Substances 0.000 description 7
- 238000009833 condensation Methods 0.000 description 7
- 230000005494 condensation Effects 0.000 description 7
- 239000002360 explosive Substances 0.000 description 7
- 238000012544 monitoring process Methods 0.000 description 7
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 238000009826 distribution Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- 238000011049 filling Methods 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
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- 238000004064 recycling Methods 0.000 description 3
- 230000032258 transport Effects 0.000 description 3
- 240000006240 Linum usitatissimum Species 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000010358 mechanical oscillation Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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Abstract
The utility model relates to a semi-closed self-inert type vibration fluidized drying system, which comprises an inert gas generating device, a vibration fluidized drying device, a tail gas dedusting and purifying device and a tail gas condensing and purifying device that are connected through pipelines; and a gas outlet of the tail gas condensing and purifying device is communicated with the inert gas generating device through a pipeline. The semi-closed self-inert type vibration fluidized drying system disclosed by the utility model is good in safety and is incapable of generating combustion or explosion problem in the drying process. Besides, the semi-closed self-inert type vibration fluidized drying system can solve the problems of large energy consumption, good drying effect, poor dedusting effect and environment pollution of the traditional drying system.
Description
Technical field
The utility model relates to a kind of drying system of inflammable, explosive or readily oxidizable substance material, is specifically related to a kind of semi-closure from lazy formula vibration fluidization drying system.
Background technology
High moisture heating value of coal is low, and the coal drying is to improve the effective way of ature of coal.At present, the coal drying process that adopts mainly is middle high-temperature gas coal dry technology, hot-blast stove adds the middle high-temperature gas (gas temperature is at 200 ℃ ~ 800 ℃) that forms after the high-temperature gas that produces behind the hot-air mixes with air and enters drying equipment, after middle high-temperature gas and hydrogenous coal are finished the matter heat exchange, that coal is dry.Hot gas forms negative pressure by air-introduced machine and flows through in drying equipment and remove behind wherein the dust discharged to atmosphere.The shortcoming of this technique is, because higher with the content of oxygen in the middle high-temperature gas behind the air air distribution, therefore in the temperature range of middle high temperature, coal with should in high-temperature gas contact and carries out can producing flammable explosive gas and the coal dusts such as carbon monoxide, methane in the process of heat exchange, and the oxygen mix in they and the middle high-temperature gas is easy to produce burning or explosion accident.In addition, existing cryogenic gas coal dry technology, although gas temperature is about 200 ℃, for the higher coal of volatile matter, the flammable explosive gas such as the carbon monoxide that produces in dry run, methane and coal dust and oxygen mix also produce burning or explosion accident easily.So no matter present gas dry technology is middle high temperature or low temperature, all can produce the possibility of burning or blast, the normal operation of drying system is caused have a strong impact on, security is lower.
In addition, existing drier has rotary drier, pneumatic conveyer dryer, fluidized drier and abrasive type drier etc.The shortcoming of these driers is, raw meal particle size has certain restriction, and the material that moisture content is high very easily produces adhesion to wall, and contacting efficiency is low, does wet inhomogeneously, and the drier volume is larger, complicated structure.For example, the shortcoming of rotary-drum drier is that floor space is larger, because coal stream only rolls in the drying chamber bottom, the drying chamber utilization rate is low, and rate of heat exchange is slower.For improving drying capacity, guarantee drying effect, baking temperature should not be lower than 500 ℃.When dry coal since the coal flow much larger than slime content, heat exchanger effectiveness is lower, and since baking temperature higher, coal dust has explosion risk.Rotary wind type forces liquefied drier technique to be subjected to the restriction of rotor shaft dimension limit etc., and drying capacity is also minimum.The vibrating mixed flow dryer shortcoming is the air-flow skewness, needs Multi-layers distributing, and volume is larger, poor air-tightness, and rate of drying is low, if baking temperature surpasses 200 ℃, the dry materials such as coal have spontaneous combustion dangerous.The rotary pipe type drier belongs to the indirect type drying, and shortcoming is that the dried material granularity is little, and drying medium and dried material rate of heat exchange are low, and drying capacity is low, and drying medium can only be selected saturated vapor, selects air also to exist the dry material spontaneous combustions such as coal dangerous.
Therefore, still need explore the coal drying process that a kind of security is good, the thermal efficiency is high, provide important means for simmering the coal upgrading.
The utility model content
For the deficiencies in the prior art, the utility model provides a kind of semi-closure from lazy formula vibration fluidization drying system.
Semi-closure of the present utility model is from lazy formula vibration fluidization drying system, it comprises inert gas generation device, vibratory fluidized drying device, tails dedusting purifier and the tail gas condensing purifier that links to each other by pipeline, and the gas outlet of described tail gas condensing purifier communicates by pipeline with described inert gas generation device.
Further, described vibratory fluidized drying device comprise can air-isolation the material inlet feed valve and material outlet feed valve that can air-isolation.
Described inert gas generation device is gas or solid combustion device, and has the air blast of air being inputted described inert gas generation device.
Described drying system further comprises: the inert gas that described inert gas generation device is produced between described inert gas generation device and described vibratory fluidized drying device is incorporated into the air-introduced machine in the described vibratory fluidized drying device; Between described tail gas condensing purifier and described inert gas generation device, will be incorporated into from the tail gas of described tail gas condensing purifier the air-introduced machine of described inert gas generation device; Be arranged on the vent valve on the described inert gas generation device; Be arranged on the explosion venting device on the described vibratory fluidized drying device.
Preferably, described inert gas generation device inside is provided with the monitoring device of measuring oxygen content in the inert gas.
Preferably, described inert gas generation device is hot-blast stove.
Preferably, described vibratory fluidized drying device comprises: the drying bed that disposes the tool of isolation spring and shock electric machine chlamydate bed body and place described bed body is provided with material inlet and is provided with material outlet at the other end of described bed body at an end of described bed body; Described drying bed is provided with a plurality of bottom blowing circumferential weld mixed flow nozzle, and the top of described drying bed is provided with a plurality of top blast mixed flow nozzle; Described bottom blowing circumferential weld mixed flow nozzle and described top blast mixed flow nozzle interlaced arrangement; The below of described drying bed is provided with the bottom blowing air collecting box with entrance, and described bottom blowing air collecting box communicates with the entrance of described bottom blowing circumferential weld mixed flow nozzle; The top of described drying bed is provided with the top blast duct set with entrance, and described top blast duct set communicates with the entrance of described top blast mixed flow nozzle; Described top blast duct set comprises that a house steward and Duo Gen are in charge of, and communicate described being in charge of with the entrance of described top blast mixed flow nozzle.
Preferably, described inert gas generation device is the device that oxygen content is lower than 8% inert gas for the gas that produces; More preferably, described inert gas generation device is the device that oxygen content is lower than 5% inert gas for the gas that produces.
Material in the described vibratory fluidized drying device is the material of inflammable, explosive or easy oxidation.
Described material inflammable, explosive, easy oxidation comprises coal and metal dust.
Semi-closure of the present utility model is good from the security of lazy formula vibration fluidization drying system, can not produce burning or blast problem in the dry run.In addition, semi-closure of the present utility model can solve the existing problem that the consumption of drying system energy is large, drying effect is poor from lazy formula vibration fluidization drying system; And can solve that existing drying system dust removing effects is poor, the problem of contaminated environment.
Description of drawings
Fig. 1 is that semi-closure of the present utility model is from the schematic diagram of lazy formula vibration fluidization drying system.
Fig. 2 is that the master of semi-closure of the present utility model preferred vibratory fluidized drying device in lazy formula vibration fluidization drying system looks and phantom.
Fig. 3 is that the left side of the vibratory fluidized drying device of Fig. 2 is looked and phantom.
Fig. 4 is that the right side of the vibratory fluidized drying device of Fig. 2 is looked and phantom.
Fig. 5 is the vertical view cutaway drawing of the top blast duct set in the vibratory fluidized drying device of Fig. 2.
Reference numeral:
1, inert gas generation device (hot-blast stove)
2, air blast
3, vent valve
4, air-introduced machine
5, material inlet feed valve
6, vibratory fluidized drying device
7, explosion venting device
8, tails dedusting purifier
9, tail gas condensing purifier
10, material outlet feed valve
11, air-introduced machine
12, shock electric machine
13, isolation spring
14, material inlet
15, material outlet
16, drying bed
17, bottom blowing circumferential weld mixed flow nozzle
18, top blast mixed flow nozzle
19, bottom blowing air collecting box
20, top blast duct set
21, house steward
22, be in charge of
23, bed body
24, exhaust pipe
The specific embodiment
With reference to the accompanying drawings the utility model is further described in more detail.
As seen from Figure 1, semi-closure of the present utility model is from lazy formula vibration fluidization drying system, it comprises inert gas generation device 1, vibratory fluidized drying device 6, tails dedusting purifier 8 and the tail gas condensing purifier 9 that links to each other by pipeline, and the gas outlet of described tail gas condensing purifier 9 and described inert gas generation device 1 communicate by pipeline.
Semi-closure of the present utility model from the principle of lazy formula vibration fluidization drying system is: the atmosphere that causes a combustion reaction not occur in described vibratory fluidized drying device 6 namely is (as mainly containing N the inert gas of described inert gas generation device 1 generation of described vibratory fluidized drying device 6 usefulness
2, CO
2With flue gas etc.) filling or the described inert gas dilution of gas in the described vibratory fluidized drying device 6.Because oxygen concentration is lower than below the required least concentration MOC of burning in the inert gas, therefore described inert gas can reduce maximum explosion pressure and rate of pressure rise.
Because the gas outlet of described tail gas condensing purifier 9 and described inert gas generation device 1 communicate by pipeline, the inert gas that therefore described inert gas generation device 1 produces and from the tail gas air distribution of described tail gas condensing purifier 9.Because the tail gas from described tail gas condensing purifier 9 has been inert gas, therefore can further reduce the oxygen content of described drying system, so that the inertia of described inert gas is better, and can improve the thermal efficiency of described drying system.
Described vibratory fluidized drying device 6 can use any vibratory fluidized drying device known in the art.For example, can be that the model that the dry Co., Ltd in money river produces is the vibratory fluidized drying device of GZQ.It will be understood by those skilled in the art that the drier that can reach drying purpose that also can use other type.
Described tails dedusting purifier 8 can use any tails dedusting purifier known in the art.For example, in order to reach good dust removing effects, can use the mobility of tail gas rotational dust arrester.For example, described mobility of tail gas rotational dust arrester is that the model that Zhangjiagang Jinzheng Machinery Manufacture Co., Ltd. produces is the device of CR.
Described tail gas condensing purifier 9 can use any tail gas condensing purifier known in the art.For example, described tail gas condensing purifier can be that the model that Hengtong Environmental Protection Science ﹠ Technology Co., Ltd., Yangzhou produces is the device of VST.
For so that semi-closure of the present utility model can form the closed cycle drying system from lazy formula vibration fluidization drying system after described inert gas generation device 1, described vibratory fluidized drying device 6 comprise can air-isolation material inlet feed valve 5 and material outlet feed valve 10 that can air-isolation.At this moment, the inert gas of described inert gas generation device 1 generation of described vibratory fluidized drying device 6 usefulness is (as mainly containing N
2, CO
2With flue gas etc.) come filling, the deactivation degree is higher.
Described material inlet feed valve 5 and material outlet feed valve 10 that can air-isolation that can air-isolation can use any material feed valve that can air-isolation known in the art.Preferably, described can air-isolation material inlet feed valve 5 and material outlet feed valve 10 that can air-isolation be the earth pressure release feed valve; For example, the model of Shanghai Tai Kai Industrial Co., Ltd. production is the device of FNC.Perhaps, described can air-isolation material inlet feed valve 5 and material outlet feed valve 10 that can air-isolation be the star-shape feeding valve; For example, the model of Nantong Clare mixing apparatus Co., Ltd production is HXF type star-shape feeding valve.
Described inert gas generation device 1 is gas or solid combustion device, and has the air blast 2 of air being inputted described inert gas generation device 1.Be that described inert gas is flammable solid or gas with the burn gas of rear generation of air.When fuel gas or solid combustion, can with airborne oxygen expenditure, mainly contain N thereby produce
2And CO
2Gas as dry gas/inert gas.
Preferably, in actual production, in order to reduce improvement cost, described inert gas generation device 1 is hot-blast stove.
Described drying system further comprises: the inert gas that described inert gas generation device 1 is produced between described inert gas generation device 1 and described vibratory fluidized drying device 6 is incorporated into the air-introduced machine 4 in the described vibratory fluidized drying device 6; Between described tail gas condensing purifier 9 and described inert gas generation device 1, will be incorporated into from the tail gas of described tail gas condensing purifier 9 air-introduced machine 11 of described inert gas generation device 1; Be arranged on the vent valve 3 on the described inert gas generation device 1; Be arranged on the explosion venting device 7 on the described vibratory fluidized drying device 6.
Described air-introduced machine 4 and described air-introduced machine 11 can be carried inert gas and tail gas better.
Owing in the process that produces inert gas, in inert gas generation device 1, certainly lead to excess gas, thereby increase internal pressure.For so that described drying system can continued operation, thus vent valve 3 be provided with at described inert gas generation device 1, so that internal pressure can enter atmosphere with portion gas when increasing to the numerical value of setting.
Described explosion venting device 7 can be sealed venting of dust explosion film, and its effect is with system or the inner superpressure that occurs of drying device or blast pressure release, protection device security.
Preferably, described inert gas generation device 1 inside is provided with the monitoring device (not shown) of measuring oxygen content in the inert gas.Oxygen content in the described drying system of Real-Time Monitoring when the oxygen content in the inert gas that produces in the described inert gas generation device 1 suits the requirements, just can be transported to described vibratory fluidized drying device 6 thus, is convenient to the normal operation of system.
Vibratory fluidized drying device of the present utility model preferably includes: the drying bed 16 that disposes the tool of isolation spring 13 and shock electric machine 12 chlamydate bed body 23 and place described bed body 23 is provided with material inlet 14 and is provided with material outlet 15 at the other end of described bed body 23 at an end of described bed body 23; Described drying bed 16 is provided with a plurality of bottom blowing circumferential weld mixed flow nozzle 17, and the top of described drying bed 16 is provided with a plurality of top blast mixed flow nozzle 18; Described bottom blowing circumferential weld mixed flow nozzle 17 and described top blast mixed flow nozzle 18 interlaced arrangement; The below of described drying bed 16 is provided with the bottom blowing air collecting box 19 with entrance, and described bottom blowing air collecting box 19 communicates with the entrance of described bottom blowing circumferential weld mixed flow nozzle 17; The top of described drying bed 16 is provided with the top blast duct set 20 with entrance, and described top blast duct set 20 communicates with the entrance of described top blast mixed flow nozzle 18; Described top blast duct set 20 comprises a house steward 21 and a plurality ofly is in charge of 22 according to the flow of dry gas is equally distributed, and describedly is in charge of 22 and communicates with the entrance of described top blast mixed flow nozzle 18.
It will be understood by those skilled in the art that a plurality of bottom blowing circumferential weld mixed flow nozzle 17 can be arranged on the described drying bed 16 according to actual needs in a different manner.Preferably, described a plurality of bottom blowing circumferential weld mixed flow nozzle 17 is evenly distributed on the drying bed 16 according to the flow of the inert gas of ejection.For example, the interval arranges many rows at a certain distance, and arranges a plurality of in the interval at a certain distance every row.Distance between the adjacent row can be identical or different; Distance between adjacent two of every row can be identical or different.
Those skilled in the art are appreciated that also a plurality of top blast mixed flow nozzle 18 can be arranged on the top of described drying bed 16 according to actual needs in a different manner.Preferably, described a plurality of top blast mixed flow nozzle 18 is evenly distributed on the top of drying bed 16 according to the flow of the inert gas of ejection.For example, the interval arranges many rows at a certain distance, and arranges a plurality of in the interval at a certain distance every row.Distance between the adjacent row can be identical or different; Distance between adjacent two of every row can be identical or different.
The shape of described bottom blowing circumferential weld mixed flow nozzle 17 and described top blast mixed flow nozzle 18 is not particularly limited.Preferably, described bottom blowing circumferential weld mixed flow nozzle 17 is annular.
Described bottom blowing circumferential weld mixed flow nozzle 17 and described top blast mixed flow nozzle 18 interlaced arrangement, thereby cover whole drying bed 16, wet stock and dry gas are fully contacted carry out Convective Heating, strengthen the contact area of wet stock and dry gas, thereby improve drying efficiency, drying capacity and the efficiency of heating surface of drier.
The direction of described bottom blowing circumferential weld mixed flow nozzle 17 and described top blast mixed flow nozzle 18 is not particularly limited.In practice, mainly be the direction of determining nozzle according to the cross sectional shape of drying bed 16.
Dry gas in the described bottom blowing air collecting box 19 can enter in the described bed body 23 by described bottom blowing circumferential weld mixed flow nozzle 17.
Dry gas in the described top blast duct set 20 can enter in the described bed body 23 by described top blast mixed flow nozzle 18.
Preferably, described shock electric machine 12 is configured in the position of centre of gravity of described vibratory fluidized drying device; Described isolation spring 13 is configured in four angles of described vibratory fluidized drying device.
Described isolation spring 13 can be helical spring, and its effect is the support bed body and makes the Equipment Foundations separating vibration.
The preferred vibratory fluidized drying device 6 of the utility model can improve wet stock drying efficiency, dry mass and dry treating capacity therein, thereby reaches better drying effect.The preferred vibratory fluidized drying device of the utility model adopts the distributed drying fluidized-bed design of effluent, improves thus the fluidization quality of drying bed 16; Inert gas is close to drying bed 16 and is blown out and enter the body 23 from bottom blowing circumferential weld mixed flow nozzle 17, form one deck " air cushion " at drying bed 16 thus, wet stock can not be stopped at this, in addition because wet stock is subjected to the effect of mechanical oscillation at drying bed 16, be kept in motion, therefore only need blast an amount of thermal current just can reach dynamic drying.Add the acting in conjunction of top blast mixed flow nozzle 18, thereby the thermal efficiency is higher, dry materials is more even.
Preferably, described inert gas generation device 1 is the device that oxygen content is lower than 8% inert gas for the gas that produces.Mainly contain N in the described inert gas
2And CO
2More preferably, described inert gas generation device 1 is the device that oxygen content is lower than 5% inert gas for the gas that produces.
Material in the described vibratory fluidized drying device 6 can be any material that needs drying; Preferably, the material in the described vibratory fluidized drying device 6 is the material of inflammable, explosive or easy oxidation.
Described material inflammable, explosive or easy oxidation includes but not limited to coal and metal dust.
For example enter described inert gas generation device 1(, hot-blast stove) in fuel (flammable solid or gas) burn with the air that is input in the described inert gas generation device 1 by air blast 2, consume thus oxygen wherein and produce and contain a large amount of N
2And CO
2And the inert gas of oxygen content very low (being lower than 8%), this inert gas is sent into vibratory fluidized drying device 6 by air-introduced machine 4; The material inlet feed valve 5 of wet stock by can air-isolation enters vibratory fluidized drying device 6 and carries out drying, the dry material that obtains is discharged vibratory fluidized drying devices 6 through material outlet feed valve 10 that can air-isolation and is entered the cooler (not shown) and cool off, and then transports to the product storehouse through conveying device.The tail gas that contains dust and water vapour that vibratory fluidized drying device 6 produces enters tails dedusting purifier 8 and tail gas condensing purifier 9 successively, wherein dust precipitation and water vapour condensation are discharged, and the tail gas of dedusting and condensation is circulated back to described inert gas generation device 1 recycling by air-introduced machine 11.Because described tail gas is inert gas, therefore when the inert gas air distribution of itself and 1 generation of described inert gas generation device, the oxygen content of described drying system can be further reduced, so that the inertia of described inert gas is better, and the thermal efficiency of described drying system can be improved.
Dry run in preferred vibratory fluidized drying device 6 is: inert gas enters bottom blowing air collecting box 19 by the entrance of bottom blowing air collecting box 19, and then ejection enters in the described bed body 23 via the described bottom blowing circumferential weld mixed flow nozzle 17 that communicates with described bottom blowing air collecting box 19.Simultaneously, above-mentioned inert gas enters top blast duct set 20 by the entrance of top blast duct set 20, and then ejection enters in the described bed body 23 via the described top blast mixed flow nozzle 18 that communicates with described top blast duct set 20.Wet stock by material inlet 14 places can air-isolation material inlet feed valve 5 enter in the bed body 23 of described vibratory fluidized drying device, and by forming fluosolids on the described drying bed 16 of acting on of described shock electric machine 12 and isolation spring 13.Fully mix with the wet stock fluosolids from the inert gas of described bottom blowing circumferential weld mixed flow nozzle 17 and top blast mixed flow nozzle 18 ejections and to carry out heat exchange, make the moisture evaporation of wet stock, the dry material of generation via described material outlet 15 places can air-isolation material outlet feed valve 10 and discharge.
Particularly, the utility model semi-closure from the advantage of lazy formula vibration fluidization drying system is:
1, safe.The dry gas of semi-closure of the present utility model in lazy formula vibration fluidization drying system is inert gas, and its oxygen content is lower than 8%, so inertia is high.Gas or coal-dust explosion three elements principle according to producing coal in the dry run of coal, can not produce possibility and the primary condition of the blast of burning of coal or methane gas and coal dust.
2, drying effect is good.Because the oxygen content of dry gas (inert gas) is lower than 8%, therefore temperature that can corresponding raising dry gas is near 650 ℃ (still need be controlled at below 650 ℃), (colliery chief engineer's technical manual the 1954th page of 4.2.4.3 item ignition source ignition energy and flach point, the flach point of gas explosion is 650 ~ 750 ℃) compare with low temperature drying technology (temperature is controlled at below 200 ℃) thus, because the specific heat capacity of high temperature drying gas is high, therefore drying effect is good, and the rate of anhydrating can reach more than 10%.
3, energy utilization rate is high.Because dry tail gas recycle after dedusting, condensation and enters the inert gas generation device and mix with inert gas, can make thus the coal dust and the water vapour that contain in the tail gas burn the utilization rate of raising fuel.
4, the preferred vibratory fluidized drying device of the utility model can improve drying efficiency, dry mass and the dry treating capacity of wet stock in drying device, thereby reaches better drying effect.The preferred vibratory fluidized drying device of the utility model adopts the distributed drying fluidized-bed design of effluent, improves thus the fluidization quality of drying bed 16; Inert gas is close to drying bed 16 and is blown out and enter the body 23 from bottom blowing circumferential weld mixed flow nozzle 17, form one deck " air cushion " at drying bed 16 thus, wet stock can not be stopped at this, in addition because wet stock is subjected to the effect of mechanical oscillation at drying bed 16, be kept in motion, therefore only need blast an amount of thermal current just can reach dynamic drying.Add the acting in conjunction of top blast mixed flow nozzle 18, thereby the thermal efficiency is higher, dry materials is more even.
The following examples only are used for explaining the utility model, and unrestricted the utility model.
Hot-blast stove rises scientific and technological Industrial Co., Ltd available from Shanxi China, and model is RWNW(L) series;
The tails dedusting purifier is available from Zhangjiagang Jinzheng Machinery Manufacture Co., Ltd., and model is CR;
The tail gas condensing purifier is available from Hengtong Environmental Protection Science ﹠ Technology Co., Ltd., Yangzhou, and model is VST type liquid absorption tower.
Feed valve is available from Nantong Clare's mixing apparatus Co., Ltd, and model is HXF.
Embodiment 1
Described semi-closure comprises air blast 2, inert gas generation device 1, air-introduced machine 4, vibratory fluidized drying device 6, tails dedusting purifier 8, tail gas condensing purifier 9 and the air-introduced machine 11 that links to each other successively by pipeline from lazy formula vibration fluidization drying system, and the outlet of air-introduced machine 11 and described inert gas generation device 1 communicate by pipeline.Described vibratory fluidized drying device 6 is available from the dry Co., Ltd in money river, and model is the GZQ type.
Enter described inert gas generation device 1(hot-blast stove) in fuel (being specially coal) burn with the air that is input in the described inert gas generation device 1 by air blast 2, produce thus dry gas.When the monitoring device of the mensuration oxygen content of described hot-blast stove 1 inside detected oxygen content in the dry gas and is lower than 8%, the dry gas of this moment was qualified inert gas, and it contains a large amount of N
2And CO
2And oxygen content very low (being lower than 8%); Then this inert gas is sent in the vibratory fluidized drying device 6 by air-introduced machine 4, the thus described inert gas filling of described vibratory fluidized drying device 6 usefulness; The material inlet feed valve 5 of wet stock by can air-isolation enters vibratory fluidized drying device 6 and carries out drying.In vibratory fluidized drying device 6 inside, the temperature of inert gas is 650 ℃, under the effect of shock electric machine 12 and isolation spring 13, inert gas and wet stock carry out sufficient matter heat exchange, then the dry material that obtains is discharged vibratory fluidized drying devices 6 through material outlet feed valve 10 that can air-isolation and is entered the cooler (not shown) and cool off, and then transports to the product storehouse through conveying device.The tail gas that contains dust and water vapour that vibratory fluidized drying device 6 produces enters tails dedusting purifier 8 and tail gas condensing purifier 9 successively, wherein dust precipitation and water vapour condensation are discharged, and the tail gas of dedusting and condensation is circulated back to described inert gas generation device 1 recycling by air-introduced machine 11.Because described tail gas is inert gas, so in the circulation afterwards, when inert gas air distribution that tail gas and described inert gas generation device 1 produces, can further reduce the oxygen content of described drying system, so that the inertia of described inert gas is better, and can makes the coal dust that contains in the tail gas and water vapour burning and improve the thermal efficiency of described drying system.
Described semi-closure moves continuously from lazy formula vibration fluidization drying system, burning or blast problem do not occur.
Embodiment 2
Described semi-closure comprises that from lazy formula vibration fluidization drying system the air blast 2, the inert gas generation device 1(that link to each other successively by pipeline are provided with vent valve 3), air-introduced machine 4, vibratory fluidized drying device 6(be provided with explosion venting device 7), tails dedusting purifier 8, tail gas condensing purifier 9 and air-introduced machine 11, and the outlet of air-introduced machine 11 and described inert gas generation device 1 communicate by pipeline.Described vibratory fluidized drying device comprises: tool chlamydate bed body 23 and the drying bed 16 that is placed in one; Dispose shock electric machine 12 at its position of centre of gravity, dispose isolation spring 13 at its four angles; One end of described bed body 23 is provided with material inlet 14, and be provided with can air-isolation material inlet feed valve 5; The other end of described bed body 23 is provided with material outlet 15, and be provided with can air-isolation material outlet feed valve 10; Flow according to dry gas on the described drying bed 16 evenly distributes (to be arranged more, every row is a plurality of) bottom blowing circumferential weld mixed flow nozzle 17, arrange according to the flow of dry gas and the bottom blowing circumferential weld mixed flow nozzle 17 top blast mixed flow nozzle 18(that is interspersed more the top of described drying bed 16, and every row is a plurality of); The below of described drying bed 16 is provided with the bottom blowing air collecting box 19 with entrance, and described bottom blowing air collecting box 19 communicates with the entrance of described bottom blowing circumferential weld mixed flow nozzle 17; The top of described drying bed 16 is provided with the top blast duct set 20 with entrance, and described top blast duct set 20 comprises that a house steward 21 and Duo Gen are in charge of 22, and describedly is in charge of 22 and communicates with the entrance of described top blast mixed flow nozzle 18.
Enter described inert gas generation device 1(hot-blast stove) in fuel (being specially coal) burn with the air that is input in the described inert gas generation device 1 by air blast 2, produce thus dry gas.When increasing to the numerical value of setting, internal pressure can the part dry gas be entered atmosphere by affiliated vent valve 3.When the monitoring device of the mensuration oxygen content of described hot-blast stove 1 inside detected oxygen content in the dry gas and is lower than 8%, the dry gas of this moment was qualified inert gas, and it contains a large amount of N
2And CO
2And oxygen content very low (being lower than 8%); Then this inert gas is sent into vibratory fluidized drying device 6 by air-introduced machine 4, and the thus described inert gas filling of described vibratory fluidized drying device 6 usefulness when pressure is excessive, is discharged portion gas in the atmosphere by explosion venting device 7; The material inlet feed valve 5 of wet stock by can air-isolation enters vibratory fluidized drying device 6 and carries out drying.In vibratory fluidized drying device 6 inside, the temperature of inert gas is 650 ℃, under the effect of shock electric machine 12 and isolation spring 13, inert gas and wet stock carry out sufficient matter heat exchange, be specially: inert gas enters bottom blowing air collecting box 19 by the entrance of bottom blowing air collecting box 19, and then ejection enters in the described bed body 23 via the described bottom blowing circumferential weld mixed flow nozzle 17 that communicates with described bottom blowing air collecting box 19.Simultaneously, above-mentioned dry gas enters top blast duct set 20 by the entrance of top blast duct set 20, and then ejection enters in the described bed body 23 via the described top blast mixed flow nozzle 18 that communicates with described top blast duct set 20.Wet coal by material inlet 14 places can air-isolation material inlet feed valve 5 enter in the bed body 23 of described vibratory fluidized drying device, and by forming fluosolids on the described drying bed 16 of acting on of described shock electric machine 12 and isolation spring 13.Fully mix with wet coal fluosolids from the dry gas of described bottom blowing circumferential weld mixed flow nozzle 17 and top blast mixed flow nozzle 18 ejections and to carry out heat exchange, make the moisture evaporation of wet stock, the dry material that produces via described material outlet 15 places can air-isolation material outlet feed valve 10 discharge vibratory fluidized drying devices 6 and enter the cooler (not shown) and cool off, then transport to the product storehouse through conveying device.The tail gas that contains dust and water vapour that vibratory fluidized drying device 6 produces enters tails dedusting purifier 8 and tail gas condensing purifier 9 successively, wherein dust precipitation and water vapour condensation are discharged, and the tail gas of dedusting and condensation is circulated back to described inert gas generation device 1 recycling by air-introduced machine 11.Because described tail gas is inert gas, so in the circulation afterwards, when inert gas air distribution that tail gas and described inert gas generation device 1 produces, can further reduce the oxygen content of described drying system, so that the inertia of described inert gas is better, and can makes the coal dust that contains in the tail gas and water vapour burning and improve the thermal efficiency of described drying system.
In addition, described drying system also is provided with monitoring and controlling system, and it carries out Real-Time Monitoring and control to oxygen and other pernicious gas content in each device in the drying system; Air quantity and temperature to inert gas generation device 1 entrance, outlet are carried out Real-Time Monitoring and control; Air quantity to vent valve 3 carries out Real-Time Monitoring and control.In addition, described air blast 2 and air-introduced machine 4,11 adopt the frequency control motor holder moving, real-time regulation system air quantity, the gas pressure of control drying system.The shock electric machine 12 of vibratory fluidized drying device 6 adopts variable-frequency motor.By for above-mentioned mass flow, temperature, blast, air quantity, motor voltage and electric current; the monitoring of oxygen content, gas and the pernicious gas content of monitoring drying system, coal powder content etc.; if system operational parameters occurs when unusual; control system automatically (manually) carry out adjusting in real time rapidly or shutting down, guarantee the drying system safe operation.
Described semi-closure moves continuously from lazy formula vibration fluidization drying system, burning or blast problem do not occur.
It will be understood by those skilled in the art that under the instruction of this specification, can make some modifications or variation to the utility model.These modifications and variations also should be within the utility model claim limited range.
Claims (7)
1. a semi-closure is from lazy formula vibration fluidization drying system, it is characterized in that, described drying system comprises inert gas generation device, vibratory fluidized drying device, tails dedusting purifier and the tail gas condensing purifier that links to each other by pipeline, and the gas outlet of described tail gas condensing purifier communicates by pipeline with described inert gas generation device.
2. drying system according to claim 1 is characterized in that, described vibratory fluidized drying device comprise can air-isolation the material inlet feed valve and material outlet feed valve that can air-isolation.
3. drying system according to claim 2 is characterized in that, described inert gas generation device is gas or solid combustion device, and has the air blast of air being inputted described inert gas generation device.
4. drying system according to claim 3, it is characterized in that described drying system further comprises: the inert gas that described inert gas generation device is produced between described inert gas generation device and described vibratory fluidized drying device is incorporated into the air-introduced machine in the described vibratory fluidized drying device; Between described tail gas condensing purifier and described inert gas generation device, will be incorporated into from the tail gas of described tail gas condensing purifier the air-introduced machine of described inert gas generation device; Be arranged on the vent valve on the described inert gas generation device; Be arranged on the explosion venting device on the described vibratory fluidized drying device.
5. drying system according to claim 4 is characterized in that, described inert gas generation device inside is provided with the monitoring device of measuring oxygen content in the inert gas.
6. drying system according to claim 5 is characterized in that, described inert gas generation device is hot-blast stove.
7. each described drying system according to claim 1 ~ 6, it is characterized in that, described vibratory fluidized drying device comprises: the drying bed that disposes the tool of isolation spring and shock electric machine chlamydate bed body and place described bed body is provided with material inlet and is provided with material outlet at the other end of described bed body at an end of described bed body; Described drying bed is provided with a plurality of bottom blowing circumferential weld mixed flow nozzle, and the top of described drying bed is provided with a plurality of top blast mixed flow nozzle; Described bottom blowing circumferential weld mixed flow nozzle and described top blast mixed flow nozzle interlaced arrangement; The below of described drying bed is provided with the bottom blowing air collecting box with entrance, and described bottom blowing air collecting box communicates with the entrance of described bottom blowing circumferential weld mixed flow nozzle; The top of described drying bed is provided with the top blast duct set with entrance, and described top blast duct set communicates with the entrance of described top blast mixed flow nozzle; Described top blast duct set comprises that a house steward and Duo Gen are in charge of, and communicate described being in charge of with the entrance of described top blast mixed flow nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220301437 CN202675799U (en) | 2012-06-21 | 2012-06-21 | Semi-closed self-inert type vibration fluidized drying system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220301437 CN202675799U (en) | 2012-06-21 | 2012-06-21 | Semi-closed self-inert type vibration fluidized drying system |
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|---|---|
| CN202675799U true CN202675799U (en) | 2013-01-16 |
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| CN 201220301437 Expired - Lifetime CN202675799U (en) | 2012-06-21 | 2012-06-21 | Semi-closed self-inert type vibration fluidized drying system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748922A (en) * | 2012-06-21 | 2012-10-24 | 中国神华能源股份有限公司 | Semi-closed self-inert-type vibrating fluidized drying system |
| CN103331026A (en) * | 2013-07-15 | 2013-10-02 | 天华化工机械及自动化研究设计院有限公司 | Automatic inertia type spray drying system |
| CN106996687A (en) * | 2017-02-28 | 2017-08-01 | 武汉天颖环境工程股份有限公司 | A kind of baking furnace system controlled with pressure and temp |
-
2012
- 2012-06-21 CN CN 201220301437 patent/CN202675799U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748922A (en) * | 2012-06-21 | 2012-10-24 | 中国神华能源股份有限公司 | Semi-closed self-inert-type vibrating fluidized drying system |
| CN102748922B (en) * | 2012-06-21 | 2015-05-13 | 中国神华能源股份有限公司 | Semi-closed self-inert-type vibrating fluidized drying system |
| CN103331026A (en) * | 2013-07-15 | 2013-10-02 | 天华化工机械及自动化研究设计院有限公司 | Automatic inertia type spray drying system |
| CN106996687A (en) * | 2017-02-28 | 2017-08-01 | 武汉天颖环境工程股份有限公司 | A kind of baking furnace system controlled with pressure and temp |
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