CN107726738A - Fluid bed bulk moistening material is dried the device and method of classification - Google Patents
Fluid bed bulk moistening material is dried the device and method of classification Download PDFInfo
- Publication number
- CN107726738A CN107726738A CN201710952215.7A CN201710952215A CN107726738A CN 107726738 A CN107726738 A CN 107726738A CN 201710952215 A CN201710952215 A CN 201710952215A CN 107726738 A CN107726738 A CN 107726738A
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- CN
- China
- Prior art keywords
- fluid bed
- moistening
- dried
- clasfficiator
- classification
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
- F26B3/06—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
- F26B3/08—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/14—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects using gases or vapours other than air or steam, e.g. inert gases
Abstract
Bulk moistening material is dried the invention discloses fluid bed the device of classification, it is main to include moistening material buffer warehouse, fluidized bed drying clasfficiator, powder collector, powder forming, finished product bin, moistening material buffer warehouse is connected with fluidized bed drying clasfficiator, fluidized bed drying clasfficiator and powder collector, powder forming is sequentially connected successively, powder forming is connected with finished product bin, the device that the fluid bed bulk moistening material is dried classification also includes the material-transporting system for conveying material different device, exhaust gases passes and fluid bed charging automatic control system.The invention also discloses the method that classification is dried to bulk moistening material in fluid bed.The present invention avoids the destruction that heat balance in fluid bed caused by fluctuation be present due to moistening material moisture, and operating mode keeps stable in fluid bed, and it is qualified that finished product water capacity and granularmetric composition are stablized.
Description
Technical field
The present invention relates to a kind of device and method using fluid bed to dry materials, and in particular to a kind of fluid bed is to dissipating
The device and method of classification is dried in shape moistening material, belongs to metallurgical coking technology field.
Background technology
The Publication No. CN101128568A of Nippon Steel Engineering Technology Co., Ltd in 2008 patent of invention " wet raw material
Drying means and device ", the patent of invention technical essential is：It is imported into using high-temperature gas as thermal source and liquidation gas
When in fluid bed dryer (4) so that the wet raw materials such as the coal being enclosed in coke oven to be dried, by the high-temperature gas
A part is blown into the inside for the charge chute (6) being encased in wet raw material in fluid bed dryer (4), so as to it is low into
Originally and simple form prevents wet raw material from adhering to and being deposited on the charge chute of fluid bed dryer.The device flow chart is for example attached
Shown in Fig. 1.
The patent also discloses：, will while a part for the high-temperature gas is blown into inside the charge chute
It is also introduced near the gas vent of the thousand dry machine of fluid bed, and near the gas vent according to the fluid bed dryer
Gas temperature reach mode more than dew point to control to the high-temperature gas amount of being blown into inside the charge chute and to the stream
Change the high-temperature gas import volume near the gas vent of bed dryer.
The beneficial effect of the patent is：1. it can prevent wet raw material from adhering to and being deposited in low cost and simple structure
On the charge chute of fluid bed dryer；2. fluid bed dryer gas outlet temperature reaches more than dew point, prevent from condensing.Deficiency
Be in：The patent address only in system operation process material can smooth outflow the problem of, for the effect of dry classification
That is the moisture of product and granularmetric composition shortcoming safeguard measure.
The content of the invention
The defects of it is an object of the invention to overcome prior art, there is provided one kind can be according to cup in fluid bed and rear chamber
Material temperature to inlet amount carry out real-time monitoring, ensure fluid bed in stable conditions, so that it is guaranteed that fluid bed exported product moisture and
Granularmetric composition stable fluid bed bulk moistening material is dried the device and method of classification.
What the present invention was realized in：
Fluid bed bulk moistening material is dried the device of classification, it is characterised in that：The main moistening material that includes delays
Storehouse, fluidized bed drying clasfficiator, powder collector, powder forming, finished product bin are rushed, moistening material buffer warehouse is done with fluid bed
Dry clasfficiator is connected, and fluidized bed drying clasfficiator is sequentially connected successively with powder collector, powder forming, powder forming with
Finished product bin is connected, and the device that the fluid bed bulk moistening material is dried classification also includes material in different device
Between convey material-transporting system, exhaust gases passes and fluid bed charging automatic regulating system.
The fluid bed of the present invention is to the workflow of bulk moistening material device that classification is dried：From stock yard
Moistening material pass through the laggard fluidized bed of surge bunker, the inventory for entering fluidized bed is adjusted by automatic regulating valve, automatically
Regulating valve adjusts feed size according to the preceding room temperature T1 of fluid bed, middle room temperature T2 and rear room temperature T3 value.From fluidisation
Bed bottom is passed through heat smoke, moistening material is dried into same time stage, powder enters after being discharged with flue gas at the top of fluid bed
Powder collector is collected, and subsequently enters powder forming and becomes molding mass, and granular product is discharged from fluidized-bed bottom,
Mixed with molding mass and be sent to that finished product bin is standby, and waste gas empties at powder collector.
It is another object of the present invention to provide a kind of method that classification is dried to bulk moistening material in fluid bed.
The method that classification is dried to bulk moistening material in fluid bed, exactly make use of fluid bed disclosed in this invention
The device of classification is dried to bulk moistening material, and specifically included：
(1) when fine day moistening material moisture is relatively low, existing heat smoke is made full use of, while avoid material from being done by transition
It is dry, the treating capacity of fluidized bed drying clasfficiator is increased, it is necessary to which surge bunker provides enough wet raw materials.
Wherein：
Moisten material buffer warehouse volume V1≥Q1+Q*(w1% ﹣ w2%) * t1；
Q1Inventory needed for 0.5 hour is operated for fluidized bed drying clasfficiator；
Q is the design treatment ability that fluidized bed drying clasfficiator is calculated by raw material common aqueous；
w1% is moistening material conventional aqueous amount；
w2% is that sunny weather moistens material moisture when drying；
t1For the surge bunker available buffer time, 8~16h is generally taken.
(2) rainy season, material water capacity is high, and fluidized bed drying clasfficiator disposal ability declines, and is transported for process after guarantee is stable
OK, before rainy season set, finished product bin domestic demand stores enough materials.
Finished product bin volume V2≥Q2+Q*(w3% ﹣ w1%) * 24*t2；
Q2Inventory needed for 2 hours is operated for rear process；
Q is the design treatment ability that fluidized bed drying clasfficiator is calculated by raw material common aqueous；
w1% is moistening material conventional aqueous amount；
W3% is to moisten material maximum water content in local rainy season；
t2For the finished product bin available buffer time, generally take 3~7 days.
(3) it is qualified to stablize for guarantee finished product water capacity and granularmetric composition, and operating mode needs stabilization in fluid bed, due to wet matters
Expect that moisture has fluctuation, to ensure that heat keeps balance in fluid bed, automatic control system is set in fluid bed feeding part, and
When the moistening inventory of entering fluid bed is adjusted, the foundation of Regulate signal come from room temperature before fluid bed, middle room temperature and
The value of room temperature afterwards.
The present invention has the following technical effect that：
(1) destruction that heat balance in fluid bed caused by fluctuation be present due to moistening material moisture is avoided, in fluid bed
Operating mode keeps stabilization, and it is qualified that finished product water capacity and granularmetric composition are stablized.
(2) the enough materials of storage, rear process stable operation in rainy season in finished product bin before rainy season set.
(3) surge bunker interior energy stores enough wet raw materials, when pending raw material water capacity is relatively low, increases fluid bed and does
The treating capacity of dry clasfficiator, existing heat smoke is made full use of, while avoid material from being dried by transition.
Brief description of the drawings
Fig. 1 is background art device schematic flow sheet；
Fig. 2 is that fluid bed moistens the apparatus and method schematic flow sheet that classification is dried in material to bulk.
Wherein, 1, moistening material buffer warehouse；2nd, fluidized bed drying clasfficiator；3rd, powder collector；4th, powder forming；5、
Finished product bin.
Embodiment
The present invention is further illustrated with specific embodiment below in conjunction with the accompanying drawings.
As shown in Figure 2, the device of classification is dried by moistening to bulk moistening material in fluid bed disclosed by the invention
Material buffer warehouse 1, fluidized bed drying clasfficiator 2, powder collector 3, powder forming 4, finished product bin 5, and corresponding thing
Expect that induction system, exhaust gases passes and fluid bed charging automatic control system are formed.Moistening material from stock yard is by wet
Moisten 1 laggard fluidized bed of material buffer warehouse, the inventory for entering fluidized bed is adjusted by automatic regulating valve, automatic regulating valve root
Feed size is adjusted according to the preceding room temperature T1 of fluid bed, middle room temperature T2 and rear room temperature T3 value.Lead to from fluidized-bed bottom
Enter heat smoke, same time stage is dried in moistening material, powder enters powder after being discharged with flue gas at the top of fluid bed and collected
Device 3 is collected, and subsequently enters powder forming 4 and becomes molding mass, granular product is discharged from fluidized-bed bottom, with shaping
Material mixing is sent to that finished product bin 5 is standby, and waste gas empties at powder collector.
(1) according to formula V1≥Q1+Q*(w1% ﹣ w2%) * t1Calculate design moistening material buffer warehouse volume.
Q1Inventory needed for 0.5 hour is operated for fluidized bed drying clasfficiator；Q is that fluidized bed drying clasfficiator is normal by raw material
The design treatment ability that rule moisture is calculated；w1% is moistening material conventional aqueous amount；w2% is that sunny weather moistens when drying
Material moisture；t1For the surge bunker available buffer time, 8~16h is generally taken.
(2) according to formula V2≥Q2+Q*(w3% ﹣ w1%) * 24*t2Calculate design finished product feed bin volume.
Q2Inventory needed for 2 hours is operated for rear process；Q is that fluidized bed drying clasfficiator is calculated by raw material common aqueous
The design treatment ability arrived；w1% is moistening material conventional aqueous amount；W3% is to moisten material maximum water content in local rainy season；t2
For the finished product bin available buffer time, generally take 3~7 days.
(3) when fine day dry weather moistening material moisture is relatively low, preceding room temperature, middle room temperature and rear chamber in fluid bed
Temperature rises, and the regulating valve of feed system before fluid bed is adjusted control system, increases fluid bed inlet amount, maintains stream
Change bed cup, middle room and rear chamber temperature stabilization, so as to ensure that it is qualified that product quality is stablized.
(4) when the rainy day, moistening material moisture was higher, in fluid bed preceding room temperature, middle room temperature and rear room temperature under
The regulating valve of feed system before fluid bed is adjusted for drop, control system, reduces fluid bed inlet amount, before maintaining fluid bed
Room, middle room and rear chamber temperature stabilization, so as to ensure that it is qualified that product quality is stablized.
Although reference be made herein to invention has been described for explanatory embodiment of the invention, and above-described embodiment is only this hair
Bright preferable embodiment, embodiments of the present invention are simultaneously not restricted to the described embodiments, it should be appreciated that people in the art
Member can be designed that a lot of other modifications and embodiment, and these modifications and embodiment will fall in principle disclosed in the present application
Within scope and spirit.
Claims (3)
1. fluid bed bulk moistening material is dried the device of classification, it is characterised in that：It is main to include moistening material buffer
Storehouse, fluidized bed drying clasfficiator, powder collector, powder forming, finished product bin, moisten material buffer warehouse and fluidized bed drying
Clasfficiator is connected, and fluidized bed drying clasfficiator is sequentially connected successively with powder collector, powder forming, powder forming with into
Product feed bin is connected, and the device that the fluid bed bulk moistening material is dried classification is also included material different device
Material-transporting system, exhaust gases passes and the fluid bed charging automatic control system of conveying.
2. fluid bed bulk moistening material is dried the device of classification according to claim 1, it is characterised in that：
The fluid bed is to the workflow of bulk moistening material device that classification is dried：Wet matters from stock yard
Material passes through the laggard fluidized bed of surge bunker, and the inventory for entering fluidized bed is adjusted by automatic regulating valve, automatic regulating valve root
Feed size is adjusted according to the preceding room temperature of fluid bed, middle room temperature and rear room temperature；Heat smoke is passed through from fluidized-bed bottom, will
Same time stage is dried in moistening material, and powder is collected down after being discharged with flue gas at the top of fluid bed into powder collector
Come, subsequently enter powder forming and become molding mass, granular product is discharged from fluidized-bed bottom, mixes and be sent into molding mass
Product feed bin is standby, and waste gas empties at powder collector.
3. the method that classification is dried to bulk moistening material in fluid bed, it is characterised in that：It make use of the institute of claim 1 or 2
State fluid bed and the device of classification is dried to bulk moistening material, and specifically include：
(1) when fine day moistening material moisture is relatively low, existing heat smoke is made full use of, while avoids material from being dried by transition, is added
The treating capacity of big fluidized bed drying clasfficiator is, it is necessary to which surge bunker provides enough wet raw materials；
Wherein：
Moisten material buffer warehouse volume V1≥Q1+Q*(w1% ﹣ w2%) * t1；
Q1Inventory needed for 0.5 hour is operated for fluidized bed drying clasfficiator；
Q is the design treatment ability that fluidized bed drying clasfficiator is calculated by raw material common aqueous；
w1% is moistening material conventional aqueous amount；
w2% is that sunny weather moistens material moisture when drying；
t1For the surge bunker available buffer time, 8~16h is generally taken；
(2) rainy season, material water capacity is high, and fluidized bed drying clasfficiator disposal ability declines, for process stable operation, rain after guarantee
Before Ji Lailin, finished product bin domestic demand stores enough materials；
Finished product bin volume V2≥Q2+Q*(w3% ﹣ w1%) * 24*t2；
Q2Inventory needed for 2 hours is operated for rear process；
Q is the design treatment ability that fluidized bed drying clasfficiator is calculated by raw material common aqueous；
w1% is moistening material conventional aqueous amount；
W3% is to moisten material maximum water content in local rainy season；
t2For the finished product bin available buffer time, generally take 3~7 days；
(3) it is qualified to stablize for guarantee finished product water capacity and granularmetric composition, and operating mode needs stabilization in fluid bed, due to moistening material water
Divide and fluctuation be present, to ensure that heat keeps balancing in fluid bed, automatic control system is set in fluid bed feeding part, it is right in time
The moistening inventory for entering fluid bed is adjusted, and the foundation of Regulate signal comes from room temperature, middle room temperature and rear chamber before fluid bed
The value of temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710952215.7A CN107726738B (en) | 2017-10-13 | 2017-10-13 | Fluidized bed moistens the device and method that classification is dried in material to bulk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710952215.7A CN107726738B (en) | 2017-10-13 | 2017-10-13 | Fluidized bed moistens the device and method that classification is dried in material to bulk |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107726738A true CN107726738A (en) | 2018-02-23 |
| CN107726738B CN107726738B (en) | 2019-07-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710952215.7A Active CN107726738B (en) | 2017-10-13 | 2017-10-13 | Fluidized bed moistens the device and method that classification is dried in material to bulk |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101381088A (en) * | 2008-09-22 | 2009-03-11 | 南风化工集团股份有限公司 | Production method for drying anhydrous sodium sulfate using fluidized bed |
| CN102177406A (en) * | 2008-08-12 | 2011-09-07 | 施维英生物泥公司 | Closed loop drying system and method |
| CN102410706A (en) * | 2011-11-03 | 2012-04-11 | 云南新立有色金属有限公司 | Fluidized bed drying method of ilmenite powder |
| JP2012215316A (en) * | 2011-03-31 | 2012-11-08 | Mitsubishi Heavy Ind Ltd | Fluidized bed drying device, fluid bed drying facility and wet raw material drying method |
| CN104501534A (en) * | 2014-12-13 | 2015-04-08 | 重庆市极鼎食品有限责任公司 | Grading-type fluidized bed drying device |
-
2017
- 2017-10-13 CN CN201710952215.7A patent/CN107726738B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102177406A (en) * | 2008-08-12 | 2011-09-07 | 施维英生物泥公司 | Closed loop drying system and method |
| CN101381088A (en) * | 2008-09-22 | 2009-03-11 | 南风化工集团股份有限公司 | Production method for drying anhydrous sodium sulfate using fluidized bed |
| JP2012215316A (en) * | 2011-03-31 | 2012-11-08 | Mitsubishi Heavy Ind Ltd | Fluidized bed drying device, fluid bed drying facility and wet raw material drying method |
| CN102410706A (en) * | 2011-11-03 | 2012-04-11 | 云南新立有色金属有限公司 | Fluidized bed drying method of ilmenite powder |
| CN104501534A (en) * | 2014-12-13 | 2015-04-08 | 重庆市极鼎食品有限责任公司 | Grading-type fluidized bed drying device |
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| Publication number | Publication date |
|---|---|
| CN107726738B (en) | 2019-07-12 |
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