CN110204226A - A kind of powder material high temperature suspension fluidization quick calcining process and system - Google Patents
A kind of powder material high temperature suspension fluidization quick calcining process and system Download PDFInfo
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- CN110204226A CN110204226A CN201910542964.1A CN201910542964A CN110204226A CN 110204226 A CN110204226 A CN 110204226A CN 201910542964 A CN201910542964 A CN 201910542964A CN 110204226 A CN110204226 A CN 110204226A
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- 238000001354 calcination Methods 0.000 title claims abstract description 69
- 239000000843 powder Substances 0.000 title claims abstract description 67
- 239000000463 material Substances 0.000 title claims abstract description 63
- 239000000725 suspension Substances 0.000 title claims abstract description 54
- 238000005243 fluidization Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000008569 process Effects 0.000 title claims abstract description 11
- 238000001035 drying Methods 0.000 claims abstract description 44
- 238000005096 rolling process Methods 0.000 claims abstract description 44
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims abstract description 31
- 239000001095 magnesium carbonate Substances 0.000 claims abstract description 30
- 235000014380 magnesium carbonate Nutrition 0.000 claims abstract description 30
- 229910000021 magnesium carbonate Inorganic materials 0.000 claims abstract description 30
- 239000007789 gas Substances 0.000 claims abstract description 26
- 239000000919 ceramic Substances 0.000 claims abstract description 14
- 238000000605 extraction Methods 0.000 claims abstract description 13
- 239000012528 membrane Substances 0.000 claims abstract description 13
- 238000000926 separation method Methods 0.000 claims abstract description 13
- 239000007787 solid Substances 0.000 claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 claims abstract description 6
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical class [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 27
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 24
- 239000003546 flue gas Substances 0.000 claims description 24
- 238000001816 cooling Methods 0.000 claims description 21
- 239000000395 magnesium oxide Substances 0.000 claims description 15
- 239000002918 waste heat Substances 0.000 claims description 12
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 9
- 230000007246 mechanism Effects 0.000 claims description 9
- 230000018044 dehydration Effects 0.000 claims description 8
- 238000006297 dehydration reaction Methods 0.000 claims description 8
- 239000002006 petroleum coke Substances 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 6
- 239000003638 chemical reducing agent Substances 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 239000000779 smoke Substances 0.000 claims description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 4
- 239000011449 brick Substances 0.000 claims description 4
- 239000000428 dust Substances 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 4
- 230000001788 irregular Effects 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 238000007667 floating Methods 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 239000001569 carbon dioxide Substances 0.000 claims description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 2
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000003517 fume Substances 0.000 abstract description 2
- 238000003837 high-temperature calcination Methods 0.000 abstract description 2
- 230000006641 stabilisation Effects 0.000 abstract description 2
- 238000011105 stabilization Methods 0.000 abstract description 2
- 238000003754 machining Methods 0.000 abstract 1
- 238000011084 recovery Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 229910052749 magnesium Inorganic materials 0.000 description 3
- 239000011777 magnesium Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- GCNLQHANGFOQKY-UHFFFAOYSA-N [C+4].[O-2].[O-2].[Ti+4] Chemical compound [C+4].[O-2].[O-2].[Ti+4] GCNLQHANGFOQKY-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2/00—Lime, magnesia or dolomite
- C04B2/10—Preheating, burning calcining or cooling
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2/00—Lime, magnesia or dolomite
- C04B2/10—Preheating, burning calcining or cooling
- C04B2/102—Preheating, burning calcining or cooling of magnesia, e.g. dead burning
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2/00—Lime, magnesia or dolomite
- C04B2/10—Preheating, burning calcining or cooling
- C04B2/106—Preheating, burning calcining or cooling in fluidised bed furnaces
-
- 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
- F26B3/092—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 agitating the fluidised bed, e.g. by vibrating or pulsating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/14—Rotary-drum furnaces, i.e. horizontal or slightly inclined with means for agitating or moving the charge
- F27B7/16—Rotary-drum furnaces, i.e. horizontal or slightly inclined with means for agitating or moving the charge the means being fixed relatively to the drum, e.g. composite means
- F27B7/161—Rotary-drum furnaces, i.e. horizontal or slightly inclined with means for agitating or moving the charge the means being fixed relatively to the drum, e.g. composite means the means comprising projections jutting out from the wall
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/14—Rotary-drum furnaces, i.e. horizontal or slightly inclined with means for agitating or moving the charge
- F27B7/16—Rotary-drum furnaces, i.e. horizontal or slightly inclined with means for agitating or moving the charge the means being fixed relatively to the drum, e.g. composite means
- F27B7/161—Rotary-drum furnaces, i.e. horizontal or slightly inclined with means for agitating or moving the charge the means being fixed relatively to the drum, e.g. composite means the means comprising projections jutting out from the wall
- F27B2007/165—Rotary-drum furnaces, i.e. horizontal or slightly inclined with means for agitating or moving the charge the means being fixed relatively to the drum, e.g. composite means the means comprising projections jutting out from the wall forming a helical lifting projection
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2003/00—Type of treatment of the charge
- F27M2003/03—Calcining
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The present invention relates to a kind of powder material high temperature suspension fluidization quick calcining process and systems, and the system comprises vibratory fluidized drying device, horizontal type rolling suspension calcining device, air-blaster, hot wind generating means, gas solid separation collector, ceramic membrane dust-extraction unit, air-introduced machine and chimneys；The present invention overcomes the disadvantages that powder in magnesite conventional machining techniques is unable to high-temperature calcination, the suspension fluidization of powder material is realized using horizontal type rolling suspension calcining device, magnesite powder is dehydrated and produced steam using calcined hot fume simultaneously, system thermal recovery utilization rate is made to reach 90% or more；The comprehensive high-efficiency for realizing the energy utilizes, and has many advantages, such as that clean and environmental protection, operational safety stabilization, simple process, economy are strong, product burning quality is high, production process controllability is strong.
Description
Technical field
The present invention relates to magnesite processing technique field more particularly to a kind of powder material high temperature suspension fluidization quick burnings
Technique and system.
Background technique
The magnesite resource rich reserves in China, the reserves of Liaoning giobertite and yield occupy first place in the world at present, because
This magnesian industry has become the superior resources industry to show unique characteristics in Liaoning Province.
Traditional magnesite processing technology and equipment have been not suitable with the circular economy and environmental requirement of modern development, compel at present
The diversification of high-efficiency comprehensive utilization, the magnesia production technology of multi-product will be carried out to magnesite by being essential.From the comprehensive of the energy
Use aspects consider, more to seek advanced, safe, succinct, energy-efficient technology to the processing of magnesite powder, to produce
High added value, high-grade light-burned activated magnesia out.
Through studying, fine powder of the low-grade magnesite after grinding is able to produce out light-burned activity through high temperature suspension calcining again
Magnesium oxide product, domestic the relevant technologies have at present: 1. fixing suspension technique；2. fixed fluid technology；3. fixed sudden strain of a muscle
Bright fluid technology；4. high-temperature vibrating fluidized calcining technique.It the generally existing technique of the calcining technology of magnesite powder and sets at this stage
The problems such as standby complicated, investment is big, electrodeless adjustment is more difficult, operating cost is higher, environment protection emission is exceeded.
Summary of the invention
The present invention provides a kind of powder material high temperature suspension fluidization quick calcining process and systems, overcome magnesite biography
Powder is unable to the disadvantage of high-temperature calcination in system processing technology, and the suspension of powder material is realized using horizontal type rolling suspension calcining device
Fluidisation, while magnesite powder is dehydrated and being produced steam using calcined hot fume, recycle system thermal
Utilization rate reaches 90% or more；The comprehensive high-efficiency for realizing the energy utilizes, and has clean and environmental protection, operational safety stabilization, technique letter
The advantages that single, economy is by force, product burning quality is high, production process controllability is strong.
In order to achieve the above object, the present invention is implemented with the following technical solutions:
A kind of powder material high temperature suspension fluidization quick calcining process, includes the following steps:
1) magnesite powder is dehydrated using vibratory fluidized drying device, 300~400 DEG C of drying temperature, is taken off
The sealing discharge valve that powder material after water is dry is had dosing function enters horizontal type rolling suspension calcining device；
2) horizontal type rolling suspension calcining device has the cylinder for being obliquely installed and circumferentially turning round rolling, and the high-end of cylinder is
Feed end, low side are discharge end, and cylinder is interior to be divided into diversion section, calcining section and cooling section, diversion section, calcining along Flow of Goods and Materials direction
It is circumferentially and longitudinal equipped with multiple spiral lifting blades on the cooling section cylinder inboard wall of section and close calcining section, it calcines in the cylinder of section
If central tube, the outer wall of central tube is equipped with multiple right-handed screw spoilers and multiple backpitch spoilers；Powder after dehydration and drying
Material falls vertically in feed end and forms waterfall stream, is brought into cylinder by the high-temperature flue gas that horizontal pressurization blows, powder thing
Material is contacted with hot wind square crossing, and quick conduction, mass transfer, heat transfer decompose and generate lightweight activated magnesia；The temperature of high-temperature flue gas
It is 1000 ± 50 DEG C, magnesite powder, which suspends, to be heated, and heat balance is reached at 820 ± 20 DEG C, escapes magnesia and titanium dioxide
Carbon gas；
3) with the rolling of cylinder, the powder material after entering cylinder from spiral lifting blade raises and to discharge end stream
It is dynamic, when by calcining section, the gas irregularly flowed is formed between spiral lifting blade and right-handed screw spoiler, backpitch spoiler
Stream, to powder material generation hit raise, perturbation action, suspend flowing in realize it is fully calcined；The highly reactive form of oxygen generated after calcining
Change magnesium in cooling section natural cooling, is cooled down from when the discharge end discharging of cylinder by cold air, after being cooled to 80~100 DEG C
It is collected by gas solid separation collector, is then sent into magnesium oxide product slot with screw conveyor；
4) flue-gas temperature for carrying 2%~5% dust after calcining secretly is 850 ± 20 DEG C, a portion flue gas and cooling oxygen
150~200 DEG C of hot gas mixing after changing magnesium, temperature send to vibratory fluidized drying device and participate in magnesite after being down to 350~500 DEG C
The dehydration and drying process of powder；Another part flue gas enters waste heat boiler production industrial steam；Remaining 5% or less system cannot
The flue gas of digestion enters ceramic membrane dust-extraction unit, dedusting point together with the flue gas that vibratory fluidized drying device, waste heat boiler are discharged
It is less than 5mg/Nm to dustiness3Afterwards, smoke stack emission is led to by air-introduced machine.
A kind of powder material high temperature suspension fluidization quick burning system, including vibratory fluidized drying device, horizontal type rolling are outstanding
Floating calciner plant, air-blaster, hot wind generating means, gas solid separation collector, ceramic membrane dust-extraction unit, air-introduced machine and cigarette
Chimney；The material inlet of the vibratory fluidized drying device connects the raw material tank of magnesite powder, vibration by Pneumatic conveying pipeline
Material outlet connects the feed end of horizontal type rolling suspension calcining device by Pneumatic conveying pipeline after the drying of fluidization drying device；
The air outlet of horizontal type rolling suspension calcining device connects the dry wind entrance of vibratory fluidized drying device by pipeline respectively and gives up
The high-temperature gas entrance of heat boiler；The dry wind of vibratory fluidized drying device exports and the cryogenic gas of waste heat boiler exports difference
The smoke inlet of ceramic membrane dust-extraction unit is connected by pipeline, the neat stress outlet of ceramic membrane dust-extraction unit is connected by air-introduced machine
Chimney；The discharge end of horizontal type rolling suspension calcining device connects the entrance of gas solid separation collector, gas by Pneumatic conveying pipeline
Admittedly the outlet for separating and collecting device connects magnesium oxide product slot by screw conveyor.
The horizontal type rolling suspension calcining device is by cylinder, rotary support mechanism, rotary motion mechanism, feed end fully sheathed case
And discharge end fully sheathed case composition, the rotary support mechanism is made of rolling ring and support roller, the device for revolving and driving by motor, subtract
Fast machine, gear and gear ring composition, cylinder are erected on corresponding support roller by least two rolling ring, and gear ring is set on cylinder, and motor is logical
The rotation of speed reducer sliding tooth wheel is crossed, gear is engaged with gear ring drives cylinder to turn round around central axis；Cylinder is obliquely installed；The cylinder
The high-end of body is feed end, and feed end protrudes into charging end seal closed box, and feed inlet is set at the top of feed end fully sheathed case, feeds end seal
Closed box one end opposite with cylinder feed end is connected by hot air inlet with hot wind expansion chamber；The low side of cylinder is discharge end,
Discharge end protrudes into discharge end fully sheathed case, and air port is set out at the top of discharge end fully sheathed case, and bottom sets out material mouth, with cylinder discharge end
Cool air inlet is set on opposite discharge end fully sheathed case, cool air inlet connects air blower by cold-air duct；Feed end
It is to be tightly connected between fully sheathed case, discharge end fully sheathed case and cylinder；The cylinder is divided into diversion section along Flow of Goods and Materials direction, forges
It burns section and cooling section, the diversion section, calcining section and circumferentially and longitudinal is equipped on the cooling section cylinder inboard wall of calcining section
Multiple spiral lifting blades set central tube in the cylinder of the calcining section, the outer wall of central tube be equipped with multiple right-handed screw spoilers and
Backpitch spoiler；Cylinder inboard wall is equipped with insulating layer.
Setting angle, length, width, radius of turn, the screw pitch of the spiral lifting blade are different.
The right-handed screw spoiler, backpitch spoiler the hand of spiral on the contrary, the two on the drum outer wall of center in not advising
Then it is arranged；And setting angle, length, width, radius of turn, the screw pitch of right-handed screw spoiler are different, backpitch spoiler
Setting angle, length, width, radius of turn, screw pitch it is different.
The spiral lifting blade, right-handed screw spoiler, backpitch spoiler by stainless steel metal strip helically type around
It makes.
The gradient of the cylinder is 1.5 °~3.5 °.
The insulating layer is by the fire brick layer, heat-resisting cast bed of material and the nanometer micropore thermal insulation layer group that set gradually from inside to outside
At.
The hot wind generating means are made of petroleum coke power combustor, stable burning room and hot wind expansion chamber, and hot wind expansion chamber leans on
The feed end of nearly horizontal type rolling suspension calcining device is arranged, and stable burning room is set on the outside of hot wind expansion chamber, stable burning room is heavy with hot wind
The opposite one end in drop room sets petroleum coke power combustor, and the bottom of stable burning room sets air inlet and connects air blast by intake stack
Machine.
The vibratory fluidized drying device is Vibratingfluidbeddrier.
Compared with prior art, the beneficial effects of the present invention are:
1) magnesite powder passes through Sloped rotating conveying, spiral lifting blade and the right-handed screw spoiler of cylinder in cylinder
And backpitch spoiler disturbance, hit the effect of raising, while generation rule and irregular suspended motion, make calcining reach best effective
Magnesia is precipitated through quick burning in fruit, can save energy 20% or so compared with conventional powder calcine technology；
2) process flow is short, high safety, it is easily operated, can be realized continuous operations；Material conveying speed, thermal medium
Temperature can realize step-less adjustment and automatic control；
3) entire calcination process is in full closeding state, more environmentally-friendly；
4) export thermal medium flue gas generated by petroleum coke power combustor, thermal medium flue gas have containing ash content is few, calorific value is high,
Burn abundant free from admixture the advantages of, 30% or more economic cost can be saved with using the technique of other fuel combustions；
5) utilization rate of waste heat is up to 95% or more, and system thermal efficiency is high, and remaining 5% or less flue gas passes through ceramic membrane separation
After dedusting, dustiness is discharged in 5mg/Nm3Hereinafter, lower than national dust emission standard (20mg/Nm3)；
6) insulating layer is set in cylinder, insulating layer is made of fire brick layer, heat-resisting cast bed of material and nanometer micropore thermal insulation layer, can
The energy dissipation of system is reduced to greatest extent；
7) vibratory fluidized drying device uses Vibratingfluidbeddrier, by closed horizontal cabinet, fluidisation cavity, vibration
The steady air compartment of distribution grid, high temperature, exciting device, spring supporting pedestal composition join vibration structure, axially free flexible solution using part
The expansion issues of high temperature using vibration isolation, sealing device solve the problems, such as that high temperature, vibration isolation, sealing can not coexist.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of powder material high temperature suspension fluidization quick burning system of the present invention.
Fig. 2 is the structural schematic diagram of horizontal type rolling suspension calcining device of the present invention.
Fig. 3 is the cross-sectional view of cylinder of the present invention.
In figure: 1. raw material tank, 2. vibratory fluidized drying device, 3. horizontal type rolling suspension calcining device, 301. cylinder 302.
The sedimentation of 306. rotary motion mechanism of feed end fully sheathed case 303. discharge end fully sheathed case, 304. rolling ring, 305. support roller, 307. hot wind
4. air-blaster of room 308. spiral lifting blade, 309. central tube, 310. right-handed screw spoiler, 311. backpitch spoiler
5. 8. magnesium oxide product slot of hot wind generating means 6. gas solid separation collector, 7. screw conveyor, 9. ceramic membrane dust-extraction unit
10. 11. chimney of air-introduced machine
Specific embodiment
Specific embodiments of the present invention will be further explained with reference to the accompanying drawing:
As shown in Figure 1, a kind of powder material high temperature suspension fluidization quick calcining process of the present invention, including walk as follows
It is rapid:
1) magnesite powder is dehydrated using vibratory fluidized drying device 2,300~400 DEG C of drying temperature, is taken off
The sealing discharge valve that powder material after water is dry is had dosing function enters horizontal type rolling suspension calcining device 3；
2) as shown in Figure 2 and Figure 3, horizontal type rolling suspension calcining device 3 has the cylinder for being obliquely installed and circumferentially turning round rolling
Body 301, the high-end of cylinder 301 is feed end, and low side is discharge end, and cylinder 301 is interior to be divided into diversion section along Flow of Goods and Materials direction, forges
Burn section and cooling section, diversion section, calcining section and on 301 inner wall of cooling section cylinder of calcining section circumferentially and it is longitudinal be equipped with it is more
A spiral lifting blade 308 is calcined and sets central tube 309 in the cylinder 301 of section, and the outer wall of central tube 309 is equipped with multiple right-handed screws and disturbs
Flowing plate 310 and multiple backpitch spoilers 311；Powder material after dehydration and drying falls vertically in feed end forms waterfall material
Stream is brought into cylinder 301 by the high-temperature flue gas that horizontal pressurization blows, and powder material is contacted with hot wind square crossing, is quickly passed
It leads, mass transfer, heat transfer, decomposes and generate lightweight activated magnesia；The temperature of high-temperature flue gas is 1000 ± 50 DEG C, and magnesite powder suspends
It is heated, heat balance is reached at 820 ± 20 DEG C, escapes magnesia and carbon dioxide gas；
3) with the rolling of cylinder 301, the powder material after cylinder 301 will be entered from spiral lifting blade 308 raise and to
Discharge end flowing, when by calcining section, between spiral lifting blade 308 and right-handed screw spoiler 310, backpitch spoiler 311
Form the air-flow that irregularly flows, powder material generation is hit raise, perturbation action, realized in the flowing that suspends fully calcined；It forges
The extra light calcined magnesia generated after burning is carried out from when the discharge end discharging of cylinder 301 by cold air in cooling section natural cooling
It is cooling, it is collected after being cooled to 80~100 DEG C by gas solid separation collector 6, is then sent into magnesium oxide product with screw conveyor 7
Slot 8；
4) flue-gas temperature for carrying 2%~5% dust after calcining secretly is 850 ± 20 DEG C, a portion flue gas and cooling oxygen
150~200 DEG C of hot gas mixing after changing magnesium, temperature send to vibratory fluidized drying device 2 and participate in magnesite after being down to 350~500 DEG C
The dehydration and drying process of miberal powder body；Another part flue gas enters waste heat boiler production industrial steam；Remaining 5% or less system is not
The flue gas that can be digested enters ceramic membrane dust-extraction unit 9 together with the flue gas that vibratory fluidized drying device 2, waste heat boiler are discharged, and removes
Dirt is separated to dustiness less than 5mg/Nm3Afterwards, chimney 11 is led to by air-introduced machine 10 to discharge.
As shown in Figure 1, a kind of powder material high temperature suspension fluidization quick burning system of the present invention, including vibratory liquefaction
Drying device 2, horizontal type rolling suspension calcining device 3, air-blaster 4, hot wind generating means 5, gas solid separation collector 6, pottery
Porcelain film dust-extraction unit 9, air-introduced machine 10 and chimney 11；The material inlet of the vibratory fluidized drying device 2 passes through pneumatic carrier
Road connects the raw material tank 1 of magnesite powder, and material outlet is connected by Pneumatic conveying pipeline after the drying of vibratory fluidized drying device 2
Connect the feed end of horizontal type rolling suspension calcining device 3；The air outlet of horizontal type rolling suspension calcining device 2 is connected by pipeline respectively
The dry wind entrance of vibratory fluidized drying device 2 and the high-temperature gas entrance of waste heat boiler；The drying of vibratory fluidized drying device 2
Wind outlet and the cryogenic gas outlet of waste heat boiler connect the smoke inlet of ceramic membrane dust-extraction unit 9, ceramics by pipeline respectively
The neat stress outlet of film dust-extraction unit 9 connects chimney 11 by air-introduced machine 10；The discharge end of horizontal type rolling suspension calcining device 3 is logical
The entrance of Pneumatic conveying pipeline connection gas solid separation collector 6 is crossed, the outlet of gas solid separation collector 6 passes through screw conveyor 7
Connect magnesium oxide product slot 8.
As shown in Figure 2 and Figure 3, the horizontal type rolling suspension calcining device 3 is driven by cylinder 301, rotary support mechanism, revolution
Motivation structure 306, feed end fully sheathed case 302 and discharge end fully sheathed case 303 form, and the rotary support mechanism is by rolling ring 304 and support
305 composition of wheel, the device for revolving and driving 306 are made of motor, gear reducer, gear and gear ring, and cylinder 301 passes through at least two
Rolling ring 304 is erected on corresponding support roller 305, and gear ring, the rotation of motor via reducer sliding tooth wheel, gear are set on cylinder 301
It is engaged with gear ring and cylinder 301 is driven to turn round around central axis；Cylinder 301 is obliquely installed；The high-end of the cylinder 301 is charging
End, feed end protrude into charging end seal closed box 302, and the top of feed end fully sheathed case 302 sets feed inlet, feed end fully sheathed case 302
One end opposite with 301 feed end of cylinder is connected by hot air inlet with hot wind expansion chamber 307；The low side of cylinder 301 is
Expect end, discharge end protrudes into discharge end fully sheathed case 303, and the top of discharge end fully sheathed case 303 sets out air port, and bottom sets out material mouth,
Cool air inlet is set on the discharge end fully sheathed case 303 opposite with 301 discharge end of cylinder, cool air inlet is connected by cold-air duct
Connect air blower；It is to be tightly connected between feed end fully sheathed case 302, discharge end fully sheathed case 303 and cylinder 301；The cylinder
301 are divided into diversion section, calcining section and cooling section along Flow of Goods and Materials direction, and the diversion section calcines section and close to the cold of calcining section
But on 301 inner wall of section cylinder circumferentially and it is longitudinal be equipped with multiple spiral lifting blades 308, set in the cylinder 301 of the calcining section
The outer wall of heart cylinder 309, central tube 309 is equipped with multiple right-handed screw spoilers 310 and backpitch spoiler 311；301 inner wall of cylinder is set
There is insulating layer.
Setting angle, length, width, radius of turn, the screw pitch of the spiral lifting blade 308 are different (not to be had in figure
Body is shown).
The right-handed screw spoiler 310, backpitch spoiler 311 the hand of spiral on the contrary, the two in 309 outer wall of central tube
It is upper to be arranged in irregular；And setting angle, length, width, radius of turn, the screw pitch of right-handed screw spoiler 310 are different, instead
Setting angle, length, width, radius of turn, the screw pitch of spiral spoiler 311 are different (not specifically illustrated in figure).
The spiral lifting blade 308, right-handed screw spoiler 310, backpitch spoiler 311 are in by stainless steel metal strip
Screw type coiling forms.
The gradient of the cylinder 301 is 1.5 °~3.5 °.
The insulating layer is by the fire brick layer, heat-resisting cast bed of material and the nanometer micropore thermal insulation layer group that set gradually from inside to outside
At.
The hot wind generating means 5 are made of petroleum coke power combustor, stable burning room and hot wind expansion chamber 307, hot wind sedimentation
Room 307 is arranged close to the feed end of horizontal type rolling suspension calcining device 3, and the outside of hot wind expansion chamber 307 sets stable burning room, stable burning room
Petroleum coke power combustor is set in one end opposite with hot wind expansion chamber 307, the bottom of stable burning room sets air inlet and passes through intake stack
Connect air-blaster 4.
The vibratory fluidized drying device 2 is Vibratingfluidbeddrier.
It is dry using vibratory liquefaction first in a kind of powder material high temperature suspension fluidization quick burning system of the present invention
Device 2 dehydrates magnesite powder, then using the magnesite after 3 pairs of horizontal type rolling suspension calcining device dehydration and drying
Miberal powder body is calcined；In horizontal type rolling suspension calcining device 3, thermal medium air-flow is broken through along horizontal direction in freely falling body
Magnesite powder waterfall stream, cross-contact, the heat of thermal medium air-flow quickly pass to dispersion and fall magnesite powder between the two
Body, into after cylinder 301, with the rotation of inclination cylinder, in the effect of raising of spiral lifting blade 308, magnesite powder is outstanding
It is mobile to discharge end under floating state；By when calcining section and by spiral lifting blade 308 and right-handed screw spoiler 310, backpitch
The effect of raising, generation rule and irregular suspended motion are hit in the disturbance of spoiler 311, are finally completed calcination process.
The transporting pattern that the pneumatic conveying of magnesite powder and magnesium oxide powder is mixed using air suction type, air pressing type.Mixing
Formula Pneumatic conveyer all carries out the conveying of powder material in the suction pipe and compressed air line of blower.When blower work, object
Material enters discharger along suction pipe with air-flow by suction nozzle, makes material and air separation.The air edge separated from discharger
Air hose enters blower, and is discharged from compressed air line.The material separated from discharger also enters pressure after airlock is discharged
Feed channel is re-mixed with air herein, is then sent along compressed air line to discharger, is discharged through airlock.Air is then through cloth
Atmosphere is discharged into after cylinder filter cleaning.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of powder material high temperature suspension fluidization quick calcining process, which comprises the steps of:
1) magnesite powder is dehydrated using vibratory fluidized drying device, 300~400 DEG C of drying temperature, dehydration is dry
The sealing discharge valve that powder material after dry is had dosing function enters horizontal type rolling suspension calcining device；
2) horizontal type rolling suspension calcining device has the cylinder for being obliquely installed and circumferentially turning round rolling, and the high-end of cylinder is charging
End, low side are discharge end, are divided into diversion section, calcining section and cooling section along Flow of Goods and Materials direction in cylinder, diversion section, calcining section and
It is circumferentially and longitudinal equipped with multiple spiral lifting blades on the cooling section cylinder inboard wall of calcining section, it calcines in being set in the cylinder of section
The outer wall of heart cylinder, central tube is equipped with multiple right-handed screw spoilers and multiple backpitch spoilers；Powder material after dehydration and drying
Fall vertically in feed end and form waterfall stream, brought into cylinder by the high-temperature flue gas that horizontal pressurization blows, powder material with
Hot wind square crossing contact, quick conduction, mass transfer, heat transfer, decomposes and generates lightweight activated magnesia；The temperature of high-temperature flue gas is
1000 ± 50 DEG C, magnesite powder, which suspends, to be heated, and heat balance is reached at 820 ± 20 DEG C, escapes magnesia and carbon dioxide
Gas；
3) with the rolling of cylinder, the powder material after entering cylinder is raised from spiral lifting blade and is flowed to discharge end, when
When by calcining section, the air-flow irregularly flowed is formed between spiral lifting blade and right-handed screw spoiler, backpitch spoiler, it is right
Powder material generation hit raise, perturbation action, suspend flowing in realize it is fully calcined；The extra light calcined magnesia generated after calcining exists
Cooling section natural cooling is cooled down by cold air from when the discharge end discharging of cylinder, passes through gas after being cooled to 80~100 DEG C
Admittedly separating and collecting device collection, magnesium oxide product slot then is sent into screw conveyor；
4) flue-gas temperature for carrying 2%~5% dust after calcining secretly is 850 ± 20 DEG C, a portion flue gas and cooling magnesia
150~200 DEG C of hot gas mixing afterwards, temperature send to vibratory fluidized drying device and participate in magnesite powder after being down to 350~500 DEG C
Dehydration and drying process；Another part flue gas enters waste heat boiler production industrial steam；Remaining 5% or less system cannot digest
Flue gas and vibratory fluidized drying device, enter ceramic membrane dust-extraction unit together with the flue gas that is discharged of waste heat boiler, dedusting is separated to
Dustiness is less than 5mg/Nm3Afterwards, smoke stack emission is led to by air-introduced machine.
2. for realizing a kind of powder material high temperature suspension fluidization quick burning system of technique described in claim 1, feature
It is, including vibratory fluidized drying device, horizontal type rolling suspension calcining device, air-blaster, hot wind generating means, gas-solid point
From collector, ceramic membrane dust-extraction unit, air-introduced machine and chimney；The material inlet of the vibratory fluidized drying device passes through pneumatic transporting
The raw material tank of pipeline connection magnesite powder is sent, material outlet passes through Pneumatic conveying pipeline after the drying of vibratory fluidized drying device
Connect the feed end of horizontal type rolling suspension calcining device；The air outlet of horizontal type rolling suspension calcining device is connected by pipeline respectively
The dry wind entrance of vibratory fluidized drying device and the high-temperature gas entrance of waste heat boiler；The dry wind of vibratory fluidized drying device
The outlet of the cryogenic gas of outlet and waste heat boiler connects the smoke inlet of ceramic membrane dust-extraction unit by pipeline respectively, and ceramic membrane removes
The neat stress of dirt device, which is exported, connects chimney by air-introduced machine；The discharge end of horizontal type rolling suspension calcining device passes through pneumatic conveying
Pipeline connects the entrance of gas solid separation collector, and the outlet of gas solid separation collector connects magnesium oxide product by screw conveyor
Slot.
3. a kind of powder material high temperature suspension fluidization quick burning system according to claim 2, which is characterized in that described
Horizontal type rolling suspension calcining device is closed by cylinder, rotary support mechanism, rotary motion mechanism, feed end fully sheathed case and discharge end
Case composition, the rotary support mechanism is made of rolling ring and support roller, the device for revolving and driving by motor, gear reducer, gear and
Gear ring composition, cylinder are erected on corresponding support roller by least two rolling ring, and gear ring is set on cylinder, and motor via reducer is driven
Moving gear rotation, gear is engaged with gear ring drives cylinder to turn round around central axis；Cylinder is obliquely installed；The high-end of the cylinder be
Feed end, feed end protrude into charging end seal closed box, and feed inlet, feed end fully sheathed case and cylinder are set at the top of feed end fully sheathed case
The opposite one end of feed end is connected by hot air inlet with hot wind expansion chamber；The low side of cylinder is discharge end, and discharge end protrudes into
In discharge end fully sheathed case, air port is set out at the top of discharge end fully sheathed case, bottom sets out material mouth, the discharging opposite with cylinder discharge end
Cool air inlet is set in end seal closed box, cool air inlet connects air blower by cold-air duct；Feed end fully sheathed case, discharging
It is to be tightly connected between end seal closed box and cylinder；The cylinder is divided into diversion section, calcining section and cooling along Flow of Goods and Materials direction
Section, the diversion section, calcining section and circumferentially and longitudinal be equipped with multiple spirals and raise on the cooling section cylinder inboard wall of calcining section
Flitch sets central tube in the cylinder of the calcining section, and the outer wall of central tube is equipped with multiple right-handed screw spoilers and backpitch flow-disturbing
Plate；Cylinder inboard wall is equipped with insulating layer.
4. a kind of powder material high temperature suspension fluidization quick burning system according to claim 3, which is characterized in that described
Setting angle, length, width, radius of turn, the screw pitch of spiral lifting blade are different.
5. a kind of powder material high temperature suspension fluidization quick burning system according to claim 3, which is characterized in that described
Right-handed screw spoiler, backpitch spoiler the hand of spiral on the contrary, the two on the drum outer wall of center in irregular setting；And positive spiral shell
Setting angle, length, width, radius of turn, the screw pitch for revolving spoiler are different, setting angle, the length of backpitch spoiler
Degree, width, radius of turn, screw pitch are different.
6. a kind of powder material high temperature suspension fluidization quick burning system according to claim 3, which is characterized in that described
Helically type coiling forms by stainless steel metal strip for spiral lifting blade, right-handed screw spoiler, backpitch spoiler.
7. a kind of powder material high temperature suspension fluidization quick burning system according to claim 2, which is characterized in that described
Hot wind generating means are made of petroleum coke power combustor, stable burning room and hot wind expansion chamber, and hot wind expansion chamber is outstanding close to horizontal type rolling
The feed end of floating calciner plant is arranged, and sets stable burning room on the outside of hot wind expansion chamber, stable burning room is opposite with hot wind expansion chamber one
End sets petroleum coke power combustor, and the bottom of stable burning room sets air inlet and connects air-blaster by intake stack.
8. a kind of powder material high temperature suspension fluidization quick burning system according to claim 2, which is characterized in that described
The gradient of cylinder is 1.5 °~3.5 °.
9. a kind of powder material high temperature suspension fluidization quick burning system according to claim 2, which is characterized in that described
Insulating layer is made of fire brick layer, heat-resisting cast bed of material and the nanometer micropore thermal insulation layer set gradually from inside to outside.
10. a kind of powder material high temperature suspension fluidization quick burning system according to claim 2, which is characterized in that institute
Stating vibratory fluidized drying device is Vibratingfluidbeddrier.
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| CN110563349A (en) * | 2019-10-15 | 2019-12-13 | 厦门大学 | Two-way shell calcining device |
| CN110617708A (en) * | 2019-10-15 | 2019-12-27 | 辽宁红拖科技股份有限公司 | Vibrating fluidization calcining device and system |
| CN110668477A (en) * | 2019-11-01 | 2020-01-10 | 中冶焦耐(大连)工程技术有限公司 | Process and system for producing sintered magnesia by taking magnesium hydroxide as raw material |
| CN111829337A (en) * | 2020-08-10 | 2020-10-27 | 王蘋 | High-temperature alumina calcining equipment |
| CN112250323A (en) * | 2020-10-14 | 2021-01-22 | 沈阳化工大学 | Method for preparing sintered magnesia from powdery magnesite by one-step method |
| CN113758177A (en) * | 2021-09-27 | 2021-12-07 | 攀钢集团攀枝花钢铁研究院有限公司 | Induced air blowing system for drying titanium concentrate |
| CN113847789A (en) * | 2021-09-27 | 2021-12-28 | 攀钢集团攀枝花钢铁研究院有限公司 | Blowing and drying system for preventing titanium concentrate from hardening and technological method thereof |
| CN116839036A (en) * | 2023-08-10 | 2023-10-03 | 烟台裕能能源科技有限公司 | Mechanical fluidized bed device |
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| CN113847789A (en) * | 2021-09-27 | 2021-12-28 | 攀钢集团攀枝花钢铁研究院有限公司 | Blowing and drying system for preventing titanium concentrate from hardening and technological method thereof |
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