CN108302950A - A kind of afterheat of slags utilizes device - Google Patents
A kind of afterheat of slags utilizes device Download PDFInfo
- Publication number
- CN108302950A CN108302950A CN201810220462.2A CN201810220462A CN108302950A CN 108302950 A CN108302950 A CN 108302950A CN 201810220462 A CN201810220462 A CN 201810220462A CN 108302950 A CN108302950 A CN 108302950A
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- Prior art keywords
- shell
- inner sleeve
- slag
- afterheat
- inner casing
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- 239000002893 slag Substances 0.000 title claims abstract description 109
- 239000002918 waste heat Substances 0.000 claims abstract description 26
- 238000003860 storage Methods 0.000 claims abstract description 15
- 238000009423 ventilation Methods 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 66
- 230000005855 radiation Effects 0.000 claims description 10
- 239000012716 precipitator Substances 0.000 claims description 9
- 238000009413 insulation Methods 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 6
- 239000000428 dust Substances 0.000 claims description 6
- 238000011068 loading method Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 description 6
- 239000013585 weight reducing agent Substances 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 238000007599 discharging Methods 0.000 description 5
- 238000013178 mathematical model Methods 0.000 description 5
- 238000010248 power generation Methods 0.000 description 5
- 238000011084 recovery Methods 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000009845 electric arc furnace steelmaking Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000004064 recycling Methods 0.000 description 4
- 239000013589 supplement Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000007885 magnetic separation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910001341 Crude steel Inorganic materials 0.000 description 1
- 206010020843 Hyperthermia Diseases 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 238000013473 artificial intelligence Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 230000005021 gait Effects 0.000 description 1
- 230000036031 hyperthermia Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000009853 pyrometallurgy Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The invention belongs to technical field of waste heat utilization, discloses a kind of afterheat of slags and utilize device.The afterheat of slags includes waste-heat recoverer using device, and waste-heat recoverer is equipped with shell, shell inner sleeve, inner casing and inner casing inner sleeve successively from outside to inside, is equipped with exhaust column between shell and shell inner sleeve, and the bottom of inner casing and inner casing inner sleeve is installed with slag pan；Inner casing inner sleeve cooperatively forms air-inlet cavity with slag pan, and shell inner sleeve, inner casing and slag pan cooperatively form storage slag chamber；The second stirrer is distributed in inner casing outer helical, and the inside of shell inner sleeve is equipped with broken slag device；Second stirrer is equipped with through-hole, and the ventilation duct being connected to air-inlet cavity is equipped in the second stirrer, the air intake direction storage slag chamber of exhaust column.The heat exchange mode that the present invention is conducted heat by adding convection current in existing afterheat of slags reclaimer, utilize the through-hole of the second stirrer and broken slag device, and air flue is formed with air-inlet cavity, ventilation duct and exhaust column, further improve the heat exchange efficiency that afterheat of slags utilizes device.
Description
Technical field
The present invention relates to technical field of waste heat utilization more particularly to a kind of afterheat of slags to utilize device.
Background technology
Clinker is the inevitable by-product in steelmaking process, and discharge rate is about the 12%~15% of crude steel yield.Clinker
Formed temperature be 1500 DEG C~1700 DEG C, have very high sensible heat, therefore clinker be in steel manufacture process principal by product it
One, belong to high-grade residual heat resources, there is very high recycling to be worth.Rationally it may be implemented using with effectively recycling clinker
Steel industry sustainable development reduces production cost, improves Business Economic Benefit, while can also reduce pollution, turns waste into wealth.
Application No. is the patents of CN201510754750.2 to disclose a kind of reclaimer of electric-arc furnace steelmaking afterheat of slags
And method, it steams mainly for the recycling of electric-arc furnace steelmaking afterheat of slags, there is advanced, novelty really.But the patent
Have the following deficiencies place：1) application field is too narrow, is limited only to the recycling of electric-arc furnace steelmaking afterheat of slags；2) saturation can only be generated
Steam, it is unfavorable to extending power generation stabilization operation；3) control measures of equipment operation are few, it is more difficult to which the thousand of the industrial operating mode of reply become ten thousand
Change；4) heat transfer mechanism lacks convection current heat transfer, and heat exchange efficiency is relatively low.
It would therefore be highly desirable to need a kind of novel clinker residual heat using device to solve the above problems.
Invention content
The purpose of the present invention is to provide a kind of afterheat of slags to utilize device, is changed with solving existing afterheat of slags reclaimer
The relatively low problem of the thermal efficiency.
For this purpose, the present invention uses following technical scheme：
A kind of afterheat of slags utilizes device, including waste-heat recoverer, and waste-heat recoverer is equipped with shell, outer successively from outside to inside
Shell inner sleeve, inner casing and inner casing inner sleeve, are equipped with exhaust column between shell and shell inner sleeve, the bottom of inner casing and inner casing inner sleeve is fixed
There is slag pan, and inner casing, inner casing inner sleeve and slag pan are rotated relative to shell and shell inner sleeve；
Inner casing inner sleeve cooperatively forms air-inlet cavity with slag pan, and shell inner sleeve, inner casing and slag pan cooperatively form storage slag chamber；Shell and
Shell inner sleeve cooperatively forms the first intake antrum, and inner casing and inner casing inner sleeve cooperatively form the second intake antrum, the first intake antrum and second
Intake antrum is connected to；
The first stirrer and the second stirrer below the first stirrer, shell inner sleeve is distributed in inner casing outer helical
Inside be equipped with broken slag device, the inside of broken slag device is connected to the first intake antrum；Second stirrer is equipped with through-hole, and the second stirrer
It is interior equipped with the ventilation duct being connected to air-inlet cavity, the air intake of exhaust column is towards storage slag chamber.
Preferably, shell inner sleeve is an integral structure, and feed inlet is equipped with the top of shell, be equipped at feed inlet into
Funnel and insulation cover.
Preferably, the inside of shell inner sleeve is equipped with radiation heat transfer pipe, the both ends of radiation heat transfer pipe connect with shell inner sleeve
It is logical.
Preferably, the inside of the first stirrer is connected to the second intake antrum, and the volume of the first stirrer is more than second
The volume of stirrer.
Preferably, further including three casings being set to inside waste-heat recoverer, three casings include first successively from outside to inside
Pipe, the second pipe and third pipe；
The outlet end of first pipe is located in air-inlet cavity, and arrival end is connect with circulating fan；
The outlet end of second pipe is equipped with water stopping cap and in the second intake antrum, and arrival end is connect with water circulating pump；
The arrival end of third pipe is located at the inside of the first stirrer of top, and outlet end is connected to the first intake antrum.
Preferably, further including heat transmission equipment, heat transmission equipment includes the superheater from top to bottom set gradually, air water heat exchange
Device and economizer.
Preferably, further include accumulator and drum that be in parallel and being connected to cover top portion, accumulator and drum go out
Vapour end is connect by superheater with steam turbine, water outlet by water circulating pump respectively with the arrival end and air-water heat exchanger of the second pipe
One end connection, the other end of air-water heat exchanger is connected to drum.
Preferably, the outlet end of exhaust column is connected with cyclone dust collectors and gravitational precipitator in turn, gravitational precipitator
Discharge pipe is connected to the top of superheater, and the bottom end of economizer is connected to circulating fan.
Preferably, further including controller and hydraulic buttery valve, slag pan is set to by bearing rotation on supporting sleeve, support
Weight sensor is equipped in casing, controller is electrically connected with hydraulic buttery valve and weight sensor respectively.
Preferably, slag pan is circumferentially with slag circle, slag circle cooperatively forms slag notch with shell, and slag notch is full of for cooling down
The water of clinker.
Beneficial effects of the present invention：
The heat exchange mode that the present invention is conducted heat by adding convection current in existing afterheat of slags reclaimer, i.e., stir using second
The through-hole of slag device and broken slag device, and air flue is formed with air-inlet cavity, ventilation duct and exhaust column, to further improve clinker
The heat exchange efficiency of residual heat using device；And the hot wind extracted out from exhaust column is anti-further across cyclone dust collectors and gravitational precipitator
After multiple dedusting, so that the saturated vapor from drum overheats after superheater, and superheated steam is delivered to steam turbine and is used for
Power generation；The hot wind extracted out from exhaust column is after superheater, using the water in air-water heat exchanger and economizer heating system, warp
Low temperature hot wind after superheater, air-water heat exchanger and economizer heat exchange flows out into circulating fan from the bottom end of economizer and enters
Mouthful, cold wind is provided for waste-heat recoverer, forms circulation heat absorption, heat-carrying and the biography of enclosed to form the afterheat of slags using device
Heat.
Description of the drawings
Fig. 1 is structural schematic diagram of the afterheat of slags provided by the invention using the waste-heat recoverer of device；
Fig. 2 is the structural schematic diagram that afterheat of slags provided by the invention utilizes device；
Fig. 3 is structural schematic diagram of the afterheat of slags provided by the invention using the steam turbine power generation part of device.
In figure：
1, waste-heat recoverer；11, shell；12, shell inner sleeve；13, inner casing；14, inner casing inner sleeve；15, exhaust column；16, slag
Disk；17, slag circle；
21, the first stirrer；22, the second stirrer；23, broken slag device；24, ventilation duct；
31, loading hopper；32, insulation cover；33, radiation heat transfer pipe；
41, the first pipe；42, the second pipe；43, third pipe；
51, superheater；52, air-water heat exchanger；53, economizer；54, steam turbine；55, generator；56, condenser；57, cold
But tower；58, cooling pond；
61, accumulator；62, drum；63, water circulating pump；
71, cyclone dust collectors；72, gravitational precipitator；73, circulating fan；
81, supporting sleeve；82, weight sensor；
91, discharging chute；92, belt conveyer；93, hopper is promoted；94, hoist engine；95, magnetic-separation belt conveyor；96, expect
Storehouse；97, steel scrap storehouse；98, dumper.
Specific implementation mode
Technical solution to further illustrate the present invention below with reference to the accompanying drawings and specific embodiments.
As shown in Figure 1, a kind of afterheat of slags provided by the invention utilizes the waste-heat recoverer 1 of device, the waste-heat recoverer 1
It is equipped with shell 11, shell inner sleeve 12, inner casing 13 and inner casing inner sleeve 14, inner casing 13 and the composition of inner casing inner sleeve 14 one successively from outside to inside
A class frustum cone structure, and the two is installed on slag pan 16.Wherein：
Shell inner sleeve 12, inner casing 13 and slag pan 16 cooperatively form storage slag chamber, and shell 11 and shell inner sleeve 12 cooperatively form the
One intake antrum, inner casing 13 and inner casing inner sleeve 14 cooperatively form the second intake antrum, and the first intake antrum and the second intake antrum pass through pipeline
Connection, waste-heat recoverer 1 carry out conduction heat transfer using the first intake antrum and the second intake antrum with clinker.
Inner casing inner sleeve 14 cooperatively forms air-inlet cavity with slag pan 16, and the first stirrer 21 and position is distributed in 13 outer helical of inner casing
The inside of the second stirrer 22 in 21 lower section of the first stirrer, shell inner sleeve 12 is equipped with broken slag device 23, the inside of broken slag device 23
It is connected to the first intake antrum；Exhaust column 15 is equipped between shell 11 and shell inner sleeve 12, the second stirrer 22 is equipped with through-hole (figure
In be not shown), and the ventilation duct 24 be connected to air-inlet cavity is equipped in the second stirrer 22, the air intake of exhaust column 15 is towards storing up slag
Chamber, waste-heat recoverer 1 utilize the through-hole of the second stirrer 22, and the air formed with air-inlet cavity, ventilation duct 24 and exhaust column 15
Access carries out convection current heat transfer to clinker.
The inside of shell inner sleeve 12 is equipped with radiation heat transfer pipe 33, and the both ends of radiation heat transfer pipe 33 connect with shell inner sleeve 12
Logical, waste-heat recoverer 1 carries out radiant heat transfer using radiation heat transfer pipe 33 to clinker.The present invention by the convection current newly established heat transfer and
Radiant heat transfer so that more efficient using the heat exchange efficiency of device compared to afterheat of slags before.
Specifically, inner casing 13, inner casing inner sleeve 14 and slag pan 16 are rotated relative to shell 11 and shell inner sleeve 12, work as inner casing
13, when inner casing inner sleeve 14 and slag pan 16 rotate, the spiral shell of direction of rotation and the first stirrer 21 and the second stirrer 22 is remained
The direction of downward trend is revolved on the contrary, so that the first stirrer 21 and the second stirrer 22 can generate preferably the clinker for storing up slag chamber
Crushing effect, while downward pressure can be also generated to clinker, so that clinker is more easily extruded storage slag chamber.Further
Ground, the volume of the first stirrer 21 are more than the volume of the second stirrer 22, and the first stirrer 21 primarily serves the work of stirring clinker
With, and the second stirrer 22 and broken slag device 23 then primarily serve the clinker of tearing molten state so that the volume of clinker was torn
Smaller, convenient for fully heat exchange.
Specifically, shell inner sleeve 12 is an integral structure, and is equipped with feed inlet with the top of shell 11, is equipped at feed inlet
Loading hopper 31 and insulation cover 32, insulation cover 32 are tightened by T-bolt (not shown).It is filled compared to existing UTILIZATION OF VESIDUAL HEAT IN
Set the shell inner sleeve of the open type in (such as application No. is the Chinese invention patents of CN201510754750.2), it is of the invention into
Heat exchange area (i.e. the first intake antrum) bigger at material mouth, and further prevent heat to lose by increasing insulation cover 32, it carries
High heat exchange efficiency.Specifically, sensors in place, controller and hydraulic cylinder are additionally provided at feed inlet (in figure not show
Go out), when the material containing tank equipped with clinker is close to feed inlet, material containing tank can trigger sensors in place, and sensors in place sends out signal
It send to controller, controller controls hydraulic cylinder and advances, and pushes T-bolt rotation, insulation cover 32 is driven to open, and material containing tank is by stove
Slag is all poured into storage slag chamber and is left, and sensors in place can't detect material containing tank, and controller control hydraulic cylinder is given up the throne, will be protected
Warm lid 32 covers.
Specifically, inner casing 13 and inner casing inner sleeve 14 form a class frustum cone structure, and inner casing 13 and inner casing inner sleeve 14 are installed in
On slag pan 16, slag pan 16 is set to by the bearing (not shown) rotation of its bottom on supporting sleeve 81, in supporting sleeve 81
Equipped with weight sensor 82.Afterheat of slags further includes controller and hydraulic buttery valve (not shown), controller using device
It is electrically connected respectively with hydraulic buttery valve and weight sensor 82.After pouring into clinker into storage slag chamber, weight sensor 82 will weigh
It measures the signal uprushed and is transferred to controller, controller starts weight reduction mathematical model after receiving the signal of weight sensor 82,
And control hydraulic buttery valve and increase fuel delivery, so that the speed quickening of slagging tap of the rotary speed of slag pan 16 and clinker, controls simultaneously
The aperture of device also control loop water and air quantity, to accelerate to exchange heat and conduct heat.After clinker is gradually extruded storage slag chamber, weight sensing
When device 82 detects minimum predetermined weight, which is passed into controller, controller stops the operation of weight reduction mathematical modulo pattern,
Normal operation mode is returned to, and controls hydraulic buttery valve and reduces fuel delivery, so that the rotary speed of slag pan 16 and clinker are slagged tap
Speed slows down.To sum up, controller uses weight reduction mathematical model, automatically controls hydraulic buttery valve by computer, and then control hydraulic pressure
The speed of slagging tap of the gait of march of oil cylinder, the i.e. rotary speed of slag pan 16 and clinker, to further ensure that waste heat recovery and production
Cycle match.
Specifically, afterheat of slags further includes three casings being set to inside waste-heat recoverer 1 using device, and three casings are by outside extremely
Include inside the first pipe 41, the second pipe 42 and third pipe 43 successively.Wherein：
The outlet end of first pipe 41 is located in air-inlet cavity, and arrival end is connect with circulating fan 73 (as shown in Figure 2)；
The outlet end of second pipe 42 is equipped with water stopping cap and in the second intake antrum, arrival end and 63 (such as Fig. 2 of water circulating pump
It is shown) connection；
The arrival end of third pipe 43 is located at the inside of the first stirrer 21 of top, outlet end and first intake antrum
Connection, the inside of the first stirrer 21 is connected to the second intake antrum.
Referring to Fig. 2, afterheat of slags using device further include accumulator 61 that is in parallel and being connected to 11 top of shell and
Drum 62, accumulator 61 is located at the top of drum 62, so that the steam water interface in the first intake antrum initially enters drum
In 62.After controller starts weight reduction mathematical model, the inlet valve that controller controls accumulator 61 is opened, and flowing water Valve closes
It closes and gas outlet valve door is crack, excessive superheated water is stored into accumulator 61 at this time.When controller stops weight reduction mathematical model
After operation, the inlet valve of accumulator 61 is closed so that is not supplemented accumulation of energy water (i.e. superheated water) in accumulator 61, while being made to follow
73 frequency conversion reduction of speed of ring water pump 63 and circulating fan reduces water, gas internal circulating load, it is ensured that overheat coolant-temperature gage and hot blast temperature meet system
Range of set value.Specifically, accumulator 61 and the steam output end of drum 62 are equipped with steam-flow meter (not shown), and pass through
Hot device 51 is connect with steam turbine 54, and when steam-flow meter detects steam flow deficiency, that opens big accumulator 61 automatically goes out vapour
Valve opening, the superheated water that accumulator 61 is saved at this time are flashed to supplement steam flow, reach normal to supplement steam flow
It is worth and ensures the normal operation of steam turbine 54.
Referring to Fig. 3, superheated steam enters steam turbine 54, pushing generator 55 generates electricity, and electricity and steel mill are grid-connected (on not
Net).Superheated steam releases energy after power generation, and the steam for the low-pressure low-temperature that steam turbine 54 exports enters in condenser 56, is cooled
Water pump (not shown) pumps the cooling water come from cooling pond 58 and is cooled to distilled water, and the cooling water after heat exchange heats up passes through
Overflow flows into cooling pond 58 after cooling tower 57 cools down.Distilled water by condensate pump (not shown) send to economizer 53 with
After hot-air heat exchange heats up and is heated to 108 DEG C of deoxidations, sent to 63 entrance conduct of water circulating pump by force (forcing) pump (not shown)
System supplements water.
Please continue to refer to Fig. 2, afterheat of slags further includes heat transmission equipment using device, the heat transmission equipment include from top to bottom according to
Superheater 51, air-water heat exchanger 52 and the economizer 53 of secondary setting.Accumulator 61 passes through water circulating pump 63 with 62 water outlet of drum
It is connected to respectively with one end of the arrival end of the second pipe 42 and air-water heat exchanger 52, the other end and the drum 62 of air-water heat exchanger 52 connect
It is logical.Recirculated water after increasing by using water circulating pump 63 by the second pipe 42 in three casings successively flow into the second intake antrum and
First intake antrum, when wherein recirculated water is driven into the second intake antrum by water circulating pump 63, water flows through water stopping cap and is spread to surrounding, fills
Full entire second intake antrum, water level are gradually increasing, until flowing into the inside of the first stirrer 21 positioned at top, are flowed back into
In third pipe 43, third pipe 43 is connected to the first intake antrum, and flow is gradually filled with entire first intake antrum, the first intake antrum and
The water of two intake antrums realizes conduction heat transfer jointly with the clinker in storage slag chamber.By by the both ends of air-water heat exchanger 52 respectively with follow
Ring water pump 63 is connected to drum 62, and drum is flowed back into again after the recirculated water shunted by water circulating pump 63 can be made to be heated to form superheated water
Saturated vapor is flashed in 62.
Please continue to refer to Fig. 2, the outlet end of exhaust column 15 is connected with cyclone dust collectors 71 and gravitational precipitator 72 in turn, weight
The discharge pipe of inertia force precipitator 72 is connected to the top of superheater 51, and the bottom end of economizer 53 is connected to circulating fan 73.Circulated air
Machine 73 blasts the cold air formed after heat transmission equipment exchanges heat in the first pipe 41, and cold air is successively by air-inlet cavity, ventilation
Pipe 24, the through-hole of the second stirrer 22, storage slag chamber, exhaust column 15, the air after gradually heating up are sucked out through exhaust column 15, hot-air
After most of grit being removed into cyclone dust collectors 71 and gravitational precipitator 72, the saturation that generates drum 62 into superheater 51
Steam superheating heats water subsequently into air-water heat exchanger 52 and economizer 53, enters circulating fan after the temperature reduction of hot-air
73 entrance, then blast in waste-heat recoverer 1.
Please continue to refer to Fig. 1, slag pan 16 is circumferentially with slag circle 17, and slag circle 17 cooperatively forms slag notch with shell 11, slags tap
Mouth is full of the water for cooled slag.The clinker in waste-heat recoverer 1 is added along with hydraulic cylinder driving slag pan 16, inner casing 13
It is rotated jointly with inner casing inner sleeve 14, delivers heat to recirculated water and circulation air on one side, on one side by the second stirrer 22 and broken slag device 23
It is gradually crowded broken, and gradually decline, until entirely falling in the water of slag notch storage, it will be above 100 DEG C of low temperature exhaust heat and deliver heat to
Water is stored, the vapor that storage water is formed after being heated rises in the fragment gap of higher temperature, further absorbs heat liter
Temperature becomes medium more better than air heat-carrying capacity (becoming the higher air of water capacity), then with the hot-air after heating
Mixing, is extracted out together from exhaust column 15, and institute's heat load is delivered heat to saturated vapor, recirculated water and supplement water.
Please continue to refer to Fig. 2, the cold particle block tumbled automatically from slag pan 16 falls into discharging chute 91, and fall on discharging and slip
It on the belt conveyer 92 of 91 lower part of slot, finally falls into and is promoted in hopper 93, promote hopper 93 times equipped with electronic weight sensor
(not shown), when promotion hopper 93 fills material, electronic sensor starts promotion hoist engine 94 and is promoted hopper 93 is promoted
Stop to the position (i.e. the top position of hoist engine 94) of tipping bucket batch turning, is simultaneously stopped the operation of belt conveyer 92, falls into discharging
The particle block of chute 91 is temporarily deposited in discharging chute 91, and original position is fallen under hopper 93 when being promoted, and controller controls hoist engine
94 stop operating and belt conveyer 92 brings into operation feeding.After promoting the rising of hopper 93 and tipping bucket batch turning, magnetic-separation belt conveyor
95 operations, bushel iron block in particle block is selected and is fallen into steel scrap storehouse 97, remaining particle block is fallen into feed bin 96, when feed bin 96 is completely expected
Afterwards, it is transported by dumper 98.
It is understood that the present invention is not defined clinker, such as can be electric-arc furnace steelmaking clinker, pneumatic steelmaking
The liquid heat-carrying object such as clinker, mineral hot furnace clinker, alloying furnace clinker and copper smelting by pyrometallurgy clinker, can also be fluidized-bed combustion boiler stove
The solid-states heat-carrying objects and sinter and pellet etc. such as slag, boiling boiler clinker, magnesium metal roasting residue and roasting sulfate slag
Solid-state heat-carrying object.
In conclusion the present invention on the basis of patent of invention of Patent No. ZL201510754750.2, has following excellent
Point：
1) air circulation heat-exchange system (heat exchange mode for adding heat convection) is increased so that waste heat profit of the invention
It is improved with the heat exchange efficiency of device, while can also generate superheated steam；
2) increase accumulator 61, can effectively adjust the waste heat recovery operating mode of variation steam with balance, the contradiction of stable electric generation；
3) means such as weight reduction mathematical model control model, hydraulic buttery valve and frequency converter, exhaust heat recovery power generation system are introduced
System is easy to match with heat-carrying object production status；
4) whole artificial intelligence control, keeps waste heat recovery generating system safe efficient, simple, accurate, compact；
5) increase the thickening heat preservation of feed inlet insulation cover 32 and all heat transmission equipments, pipeline, heat loss is few, waste heat recovery
Rate is high；
6) the radiation heat transfer pipe 33 for increasing the inside setting of shell inner sleeve 12, takes full advantage of hyperthermia radiation heat transfer so that
Heat exchange efficiency is further speeded up.
Obviously, the above embodiment of the present invention is just for the sake of clearly illustrating examples made by the present invention, and it is pair to be not
The restriction of embodiments of the present invention.For the ordinary skill user of fields, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
All any modification, equivalent and improvement etc., should be included in the claims in the present invention made by within the spirit and principle of invention
Protection domain within.
Claims (10)
1. a kind of afterheat of slags utilizes device, including waste-heat recoverer (1), which is characterized in that the waste-heat recoverer (1) is by outer
Be equipped with shell (11), shell inner sleeve (12), inner casing (13) and inner casing inner sleeve (14) successively to interior, the shell (11) with it is described outside
It is equipped with exhaust column (15) between shell inner sleeve (12), the bottom of the inner casing (13) and the inner casing inner sleeve (14) is installed with slag pan
(16), and the inner casing (13), the inner casing inner sleeve (14) and the slag pan (16) are relative to the shell (11) and described outer
Shell inner sleeve (12) rotates；
The inner casing inner sleeve (14) cooperatively forms air-inlet cavity, the shell inner sleeve (12), the inner casing with the slag pan (16)
(13) and the slag pan (16) cooperatively forms storage slag chamber；The shell (11) and the shell inner sleeve (12) cooperatively form first into
Water cavity, the inner casing (13) and the inner casing inner sleeve (14) cooperatively form the second intake antrum, first intake antrum and described
Two intake antrums are connected to；
Inner casing (13) outer helical be distributed with the first stirrer (21) and below first stirrer (21) the
Two stirrers (22), the inside of the shell inner sleeve (12) are equipped with broken slag device (23), the inside of the broken slag device (23) with it is described
First intake antrum is connected to；Second stirrer (22) be equipped with through-hole, and second stirrer (22) in be equipped with it is described into
The ventilation duct (24) of wind chamber connection, the air intake of the exhaust column (15) is towards the storage slag chamber.
2. afterheat of slags according to claim 1 utilizes device, which is characterized in that the shell inner sleeve (12) is integral type
Structure, and it is equipped with feed inlet with the top of the shell (11), it is equipped with loading hopper (31) and insulation cover at the feed inlet
(32)。
3. afterheat of slags according to claim 1 utilizes device, which is characterized in that set on the inside of the shell inner sleeve (12)
There are radiation heat transfer pipe (33), the both ends of the radiation heat transfer pipe (33) to be connected to the shell inner sleeve (12).
4. afterheat of slags according to claim 1 utilizes device, which is characterized in that the inside of first stirrer (21)
It is connected to second intake antrum, and the volume of first stirrer (21) is more than the volume of second stirrer (22).
5. afterheat of slags according to claim 4 utilizes device, which is characterized in that further include being set to the waste-heat recoverer
(1) three internal casings, three casing include the first pipe (41), the second pipe (42) and third pipe (43) successively from outside to inside；
The outlet end of first pipe (41) is located in the air-inlet cavity, and arrival end is connect with circulating fan (73)；
The outlet end of second pipe (42) is equipped with water stopping cap and in second intake antrum, arrival end and water circulating pump
(63) it connects；
The arrival end of the third pipe (43) is located at the inside of first stirrer (21) of top, outlet end and described the
One intake antrum is connected to.
6. afterheat of slags according to claim 5 utilizes device, which is characterized in that further include heat transmission equipment, the heat exchange
Equipment includes the superheater (51), air-water heat exchanger (52) and economizer (53) from top to bottom set gradually.
7. afterheat of slags according to claim 6 utilizes device, which is characterized in that further include it is in parallel and with the shell
(11) accumulator (61) and drum (62) that top is connected to, the accumulator (61) and the steam output end of the drum (62) pass through institute
It states superheater (51) to connect with steam turbine (54), water outlet is managed (42) with described second respectively by the water circulating pump (63)
Arrival end is connected to the one end of the air-water heat exchanger (52), the other end and the drum (62) of the air-water heat exchanger (52)
Connection.
8. afterheat of slags according to claim 6 utilize device, which is characterized in that the outlet end of the exhaust column (15) according to
It is secondary to be connected with cyclone dust collectors (71) and gravitational precipitator (72), discharge pipe and the superheater of the gravitational precipitator (72)
(51) top connection, the bottom end of the economizer (53) is connected to the circulating fan (73).
9. afterheat of slags according to claim 1 utilizes device, which is characterized in that further include controller and hydraulic electromagnetic
Valve, the slag pan (16) are set to by bearing rotation on supporting sleeve (81), and weight is equipped in the supporting sleeve (81) and is sensed
Device (82), the controller are electrically connected with the hydraulic buttery valve and the weight sensor (82) respectively.
10. utilizing device according to afterheat of slags according to any one of claims 1 to 9, which is characterized in that the slag pan (16)
It is circumferentially with slag circle (17), the slag circle (17) cooperatively forms slag notch with the shell (11), and the slag notch, which is full of, to be used for
The water of the cooling clinker.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810220462.2A CN108302950B (en) | 2018-03-16 | 2018-03-16 | Slag waste heat utilization device |
| PCT/CN2018/115146 WO2019174287A1 (en) | 2018-03-16 | 2018-11-13 | Slag residual heat utilization device and molten slag granulation method |
| JP2020554348A JP7179868B2 (en) | 2018-03-16 | 2018-11-13 | Slag residual heat utilization device and molten slag granulation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810220462.2A CN108302950B (en) | 2018-03-16 | 2018-03-16 | Slag waste heat utilization device |
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| CN108302950A true CN108302950A (en) | 2018-07-20 |
| CN108302950B CN108302950B (en) | 2024-04-12 |
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| CN201810220462.2A Active CN108302950B (en) | 2018-03-16 | 2018-03-16 | Slag waste heat utilization device |
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