CN104073578B - The dry-type sensible heat recovery and processing system of blast-furnace slag and method - Google Patents
The dry-type sensible heat recovery and processing system of blast-furnace slag and method Download PDFInfo
- Publication number
- CN104073578B CN104073578B CN201410331475.9A CN201410331475A CN104073578B CN 104073578 B CN104073578 B CN 104073578B CN 201410331475 A CN201410331475 A CN 201410331475A CN 104073578 B CN104073578 B CN 104073578B
- Authority
- CN
- China
- Prior art keywords
- slag
- heat
- solid
- state
- blast
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
Landscapes
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The present invention relates to blast-furnace slag and reclaim field, particularly to dry-type sensible heat recovery and processing system and the method for blast-furnace slag.Including slag handling system, heat-exchange system and Turbo-generator Set；The liquid high temperature furnace slag of 1400 1500 DEG C enters slag handling system, and the solid-state slag of 950 1050 DEG C it is cooled to through dry type solidification conversion equipment, slag heat-exchanging chamber in the most canned feeding heat-exchange system is cooled to the slag of less than 200 DEG C and discharges slag heat-exchanging chamber by slag-draining device, the high-temperature flue gas of 850 950 DEG C produced introduces, by circulating fan, the superheated steam producing 350 450 DEG C in afterheat boiler system after heat exchange after fume dust remover and is recycled by being redirected back towards heat-exchange system for the low-temperature flue gas produced after Turbo-generator Set generating heat exchange.The simple easily operated control maintenance scalp of this system structure is few, and floor space is little is easily achieved industrialized production Benefit.
Description
Technical field
The present invention relates to blast-furnace slag and reclaim field, particularly to the dry-type sensible heat of blast-furnace slag
Recovery and processing system and method.
Background technology
Both at home and abroad the processing method that blast-furnace slag is the most frequently used being included two kinds at present, one is water
Sprinkling method or be water quenching, another kind is hot charge practice.
Water is used to sprinkle method as the term suggests the blast-furnace slag of high temperature is dropped by direct water exactly
Temperature, carries out post processing the most again, needs in the process with substantial amounts of water, electricity, simultaneously blast furnace
Slag and water at high temperature react the harmful gas of generation and pollute the environment.And use hot charge practice
Being exactly directly by canned for the blast-furnace slag of high temperature, this need to transport liquid warm sludge with substantial amounts of slag ladle,
Tank the most easy to stick, need to take a large amount of place and dispose.
And both the above method, its common feature is: the sensible heat of high temperature furnace slag cannot return
Receive, and slattern completely；Floor space is big；Seriously polluted, do not meet the most energy-conservation subtracting
The state basic policy of row.
Summary of the invention
It is an object of the invention to provide a kind of blast-furnace slag dry-type sensible heat recovery and processing system and
Method, it is possible to the sensible heat major part in blast-furnace slag being reclaimed and can effectively recycle generation can
The economic benefit seen.Meanwhile, processing system floor space is little, pollution-free, complies fully with mesh
The energy-saving and emission-reduction policy that front country advocates.
The object of the present invention is achieved like this, blast-furnace slag dry-type sensible heat recovery and processing system,
Including: slag handling system, heat-exchange system and Turbo-generator Set；
Described slag handling system is provided with dry type solidification conversion equipment；
Described heat-exchange system is provided with slag heat-exchanging chamber, circulating fan, slag-draining device,
Fume dust remover, afterheat boiler system；
The liquid high temperature furnace slag of 1400-1500 DEG C enters described slag handling system, and through institute
State dry type solidification conversion equipment and be cooled to the solid-state slag of 950-1050 DEG C；
By transmitting device, described solid-state slag is sent into the described stove in described heat-exchange system
Slag heat-exchanging chamber, described circulating fan is located at the bottom of described slag heat-exchanging chamber and by low temperature
Air blasts in described slag heat-exchanging chamber, described solid-state slag and described slag heat-exchanging chamber
In cryogenic gas carry out heat exchange and be cooled to less than 200 DEG C and discharge through described slag-draining device
Described heat-exchange system；The most also produce the high-temperature flue gas of 850-950 DEG C；Described high temperature cigarette
Gas through described fume dust remover institute and introduces described waste heat boiler system by stating circulating fan
In system, after heat exchange, produce the superheated steam of 350-450 DEG C；
By gas path pipe, the superheated steam produced is inputted in described Turbo-generator Set for institute
State Turbo-generator Set generating；The low-temperature flue gas produced after heat exchange is through described circulation
Blower fan is returned in described heat-exchange system and is recycled.
The invention provides a kind of brand-new system, cold for liquid being controlled property of blast-furnace slag
Solidify the most afterwards so that it is form is converted into solid-state from liquid, and keeps heat energy to greatest extent, then
Fully reclaim the sensible heat in slag so that it is be converted to steam-energy or electric energy, dry to realize blast furnace slag
Formula solid-state flaking processes and Exposure degree.Process device structure is simple, it is easy to operation controls,
Maintenance is little, small investment, and floor space is little, it is easy to accomplish industrialized production, energy-saving benefit
And economic benefit is the hugest.
Preferably, described dry type solidification conversion equipment is storage slag bath and mobile coldplate；
Described liquid high temperature furnace slag enter described dry type solidification conversion equipment after, be introduced into added with
The described storage slag bath of solid-state coolant, controls temperature at 1350-1400 DEG C；Slag afterwards
It flow on described mobile coldplate, described slag is cooled to indirectly the solid-state of 950-1050 DEG C
Slag.
Preferably, the outside of described slag heat-exchanging chamber is additionally provided with traversing traction apparatus, lifting
Derrick, crane；
Described slag heat-exchanging chamber is cylindrical cavity, and its top is provided with slag and fills distributing device, described
Circulating fan and described slag-draining device are each provided at the bottom of described slag heat-exchanging chamber and set up two separately
Side；
The sidewall of described slag heat-exchanging chamber is provided with a connecting pipeline, described flue gas ash removal
Device and described afterheat boiler system are each provided in described connecting pipeline；
The end of described connecting pipeline is provided with a connecting pipeline and connects with described circulating fan,
Be provided with near the side of one end of described connecting pipeline one for described steam turbine generator
The gas path pipe of group connection feed superheated steam.
Preferably, described slag-draining device includes deslagging breaker and deslagging belt feeder.
Present invention also offers and utilize above-mentioned blast-furnace slag dry-type sensible heat recovery and processing system to enter
The method that row blast-furnace slag dry-type sensible heat reclaims, comprises the following steps:
(1) the liquid high temperature furnace slag of 1400-1500 DEG C is sent into described slag handling system,
And the solid-state slag of 950-1050 DEG C it is cooled to through described dry type solidification conversion equipment；
(2) by the described slag heat in the described solid-state slag described heat-exchange system of canned feeding
Switch room, Cryogenic air is blasted described slag heat-exchanging chamber, solid-state stove by described circulating fan
Slag and described Cryogenic air carry out heat exchange, are cooled to the slag of less than 200 DEG C by described
Slag-draining device discharges described slag heat-exchanging chamber, the high-temperature flue gas warp of 850-950 DEG C of generation
After crossing described fume dust remover, introduce described afterheat boiler system by described circulating fan
In；Described high-temperature flue gas produces in described afterheat boiler system after heat exchange
The superheated steam of 350-450 DEG C；
(3) by gas path pipe, the superheated steam produced is inputted in described Turbo-generator Set
Generate electricity for described Turbo-generator Set；Follow described in the low-temperature flue gas warp produced after heat exchange
Ring blower fan is redirected back towards described heat-exchange system and is recycled.
The recovery method that the present invention provides, has process device structure simple, it is easy to operation control
System, maintenance is little, small investment, and floor space is little, it is easy to accomplish industrialized production, energy-conservation
Benefit and economic benefit are the hugest.
Preferably, in step (1), described dry type solidification conversion equipment is storage slag bath and movement
Coldplate；
Specifically including, high temperature furnace slag is introduced in the described storage slag bath added with solid-state coolant,
And temperature is controlled at 1350-1400 DEG C；It flow to afterwards on described mobile coldplate；
By described mobile coldplate from head to three sections of regions of portion, control injection flow rate to institute
Blast-furnace slag is cooled down by bottom water spray indirectly that state mobile coldplate:
First paragraph injection flow rate is 40kg/ ton slag, and slag surface temperature drops to 1100 DEG C, internal
Temperature drops to 1250 DEG C, and slag surface forms the solid-state duricrust of thickness 8-10mm, and inside is
Liquid state；
Second segment injection flow rate is 40kg/ ton slag, and slag surface temperature drops to 1050 DEG C, internal
Temperature drops to 1150 DEG C, and it is the solid outer shell of 18-20mm that surface forms thickness, and inside is half
Liquid state；
3rd section of injection flow rate is 20kg/ ton slag, and slag surface temperature drops to 1000 DEG C, internal
Temperature drops to 1050 DEG C, and it is the solid-state like of 48-50mm that slag forms thickness.
Preferably, described solid-state coolant is pulverized slag, agstone, powdery construction waste
Compositions；
When adding described solid-state coolant, high hopper it is directly added in described storage slag bath,
The mobilization force utilizing slag stream is stirred mixing.
Preferably, in step (2), the slag of described solid-state cooling of furnace slag to less than 200 DEG C
During discharging described slag heat-exchanging chamber by described slag-draining device, including:
First pass through described deslagging breaker when being exhausted from system by the slag after cooling to be broken into
After granularity is the bulk of 40-45mm, then transport through described deslagging belt feeder；
Slag carries out after transporting second-time breakage becomes granularity to be less than the bulk of 5mm, then passes through
Recovery section slag ferrum after magnetic separation, and pack after pulverizing according to demand.
Preferably, in step (3), low-temperature flue gas is redirected back towards institute through described circulating fan
State in the step that heat-exchange system is recycled, also include:
Described low-temperature flue gas, after described afterheat boiler system is out, needs to carry out secondary and removes
Dirt, afterwards, then introduces described slag heat-exchanging chamber after described circulating fan pressurizes；
Preferably, the dedusting carried out the high-temperature flue gas entering described afterheat boiler system is one
Secondary dedusting, described one-time dedusting is gravitational settling dedusting；Described final dusting is cyclone dust removal.
Accompanying drawing explanation
The structural representation of the heat-exchange system that Fig. 1 provides for the embodiment of the present invention；
The blast-furnace slag dry-type sensible heat recovery and processing system that Fig. 2 provides for the embodiment of the present invention shows
It is intended to；
The slag handling system process schematic representation that Fig. 3 provides for the embodiment of the present invention；
The heat exchanger system process schematic representation that Fig. 4 provides for the embodiment of the present invention；
The deslagging that Fig. 5 provides for the embodiment of the present invention processes process schematic representation.
1-slag ladle flatcar, 2-slag pot, the traversing traction apparatus of 3-, 4-crane, 5-slag fill cloth
Device, 6-slag heat-exchanging chamber, 7-fume dust remover, 8-afterheat boiler system, 9-circulated air
Machine, 10-deslagging breaker, 11-deslagging belt feeder, 12-superheated steam.
Detailed description of the invention
Below by specific embodiment, the present invention is described in further detail.
Blast-furnace slag dry-type sensible heat recovery and processing system, as depicted in figs. 1 and 2, including:
Slag handling system, heat-exchange system and Turbo-generator Set；
Described slag handling system is provided with dry type solidification conversion equipment；Preferably, described dry
Formula solidification conversion equipment is storage slag bath and mobile coldplate；
The described liquid high temperature furnace slag of 1400-1500 DEG C enters described dry type solidification conversion equipment
After, it is introduced into the described storage slag bath added with solid-state coolant, temperature is controlled
1350-1400℃；Slag flow on described mobile coldplate afterwards, by the coldest for described slag
But it is the solid-state slag of 950-1050 DEG C.
Described heat-exchange system is provided with slag heat-exchanging chamber 6, circulating fan 9, slag-draining device,
Fume dust remover 7, afterheat boiler system 8；
For the ease of feeding in described slag heat-exchanging chamber 6, it is preferable that described slag heat
The outside of switch room 6 is additionally provided with traversing traction apparatus 3, lift headframe, crane 4；
Solid-state slag after fill is filled after flatcar is transported near slag heat-exchanging chamber 6,
And by the crane 4 arranged on lift headframe, the solid-state slag of fill is hoisted to slag heat and hands over
Change the top of room 6.
Described slag heat-exchanging chamber 6 is cylindrical cavity, and its top is provided with slag and fills distributing device 5,
Described circulating fan 9 and described slag-draining device are each provided at the bottom of described slag heat-exchanging chamber 6
And set up both sides separately；
The fill slag being transported to slag heat-exchanging chamber 6 top will by traversing traction apparatus 3
Fill slag promotes and at the traversing slag ladle distributing device 5 high-order to heat exchanger, by slag ladle cloth
Glassware 5 carries out cloth and loads slag heat-exchanging chamber 6, is located at bottom slag heat-exchanging chamber 6
Cryogenic air is blasted in slag heat-exchanging chamber 6 by circulating fan 9, and solid-state slag and low temperature are empty
Gas carries out heat exchange, and the slag temperature after cooling is less than 200 DEG C, by being located at slag heat
Slag-draining device bottom switch room 6 discharges slag heat-exchanging chamber 6, creates simultaneously
The high-temperature flue gas of 850-950 DEG C.
The sidewall of described slag heat-exchanging chamber 6 is provided with a connecting pipeline, and described flue gas removes
Dirt device 7 and described afterheat boiler system 8 are each provided in described connecting pipeline；
The end of described connecting pipeline is provided with a connecting pipeline and described circulating fan 9 connects
Logical, it is provided with one for sending out with described steamer near the side of one end of described connecting pipeline
The gas path pipe of group of motors connection feed superheated steam 12.
High-temperature flue gas first passes through dedusting dress by the traction of described circulating fan 9 and grabs and remove
Dirt, enters afterheat boiler system 8 afterwards, produces after carrying out heat exchange in preboiler system
The superheated steam 12 of raw 350-450 DEG C, sends into Turbo-generator Set for it by gas path pipe
Generating.The low-temperature flue gas produced after heat exchange flows out from afterheat boiler system 8, and by circulating
Blower fan 9 enters slag heat-exchanging chamber 6 after being drawn through final dusting and recycles, and improves
The recycling efficiency of used heat.
In order to prevent the slag after cooling down excessive, and convenient discharge, it is preferable that described deslagging
Device includes deslagging breaker 10 and deslagging belt feeder 11.
Described liquid high temperature furnace slag enter described dry type solidification conversion equipment after, be introduced into added with
The described storage slag bath of solid-state coolant, controls temperature at 1350-1400 DEG C；Slag afterwards
It flow on described mobile coldplate, described slag is cooled to indirectly the solid-state of 950-1050 DEG C
Slag.
The described slag heat-exchanging chamber that described solid-state slag is admitted in described heat-exchange system
6, described circulating fan 9 is located at the bottom of described slag heat-exchanging chamber 6 and by Cryogenic air drum
Enter in described slag heat-exchanging chamber 6, in described solid-state slag and described slag heat-exchanging chamber 6
Cryogenic gas carry out heat exchange be cooled to less than 200 DEG C through described slag-draining device discharge institute
State heat-exchange system；The most also produce the high-temperature flue gas of 850-950 DEG C；Described high-temperature flue gas
Through described fume dust remover institute and introduce described waste heat boiler system by stating circulating fan 9
In system 8, after heat exchange, produce the superheated steam 12 of 350-450 DEG C；
By gas path pipe, the superheated steam 12 of generation is inputted in described Turbo-generator Set
Generate electricity for described Turbo-generator Set；The low-temperature flue gas produced after heat exchange is through described
Circulating fan 9 is returned in described heat-exchange system and is recycled.
Afterheat boiler system 8 therein and Turbo-generator Set be develop the most ripe
System, the most only summarize.
Afterheat boiler system 8 specifically includes that smoke processing system, water treatment system, overheated
Device, vaporizer, economizer and heat-exchanging tube bundle etc..
Smoke processing system is mainly responsible for removing the cleaner unit of the dust in flue gas, concentrates and receives
Collect to do its use.Water treatment system is mainly responsible for circulating in waste heat boiler the water vapour of generation
Sofening treatment, water vapour enters softened water tank, through oxygen-eliminating device, water pump, heat-exchanging tube bundle and mistake
After hot device, form the superheated steam 12 of about 350-450 DEG C, enter Turbo-generator Set generating.
Turbo-generator Set mainly includes generating set and auxiliary device.Receiving overheated steaming
After vapour 12, Turbo-generator Set generates electricity, and electricity is sent outside user and uses.Superheated steam simultaneously
12 become the relatively low exhaust steam of temperature (＜ 200 DEG C) after generating.Exhaust steam or condensed device are with solidifying
Bear water pump and return softened water tank, or directly return heat-exchanging tube bundle, participate in circulation.
The invention provides a kind of brand-new system, cold for liquid being controlled property of blast-furnace slag
Solidify the most afterwards so that it is form is converted into solid-state from liquid, and keeps heat energy to greatest extent, then
Fully reclaim the sensible heat in slag so that it is be converted to steam-energy or electric energy, dry to realize blast furnace slag
Formula solid-state flaking processes and Exposure degree.Process device structure is simple, it is easy to operation controls,
Maintenance is little, small investment, and floor space is little, it is easy to accomplish industrialized production, energy-saving benefit
And economic benefit is the hugest.
As shown in Figure 3-Figure 5, present invention also offers utilize above-mentioned blast-furnace slag dry type show
Recuperation of heat processing system carries out the method for blast-furnace slag dry-type sensible heat recovery, comprises the following steps:
(1) the liquid high temperature furnace slag of 1400-1500 DEG C is sent into described slag handling system,
And the solid-state slag of 950-1050 DEG C it is cooled to through described dry type solidification conversion equipment；
Preferably, in step (1), described dry type solidification conversion equipment is storage slag bath and movement
Coldplate；
Specifically including, high temperature furnace slag is introduced in the described storage slag bath added with solid-state coolant,
And temperature is controlled at 1350-1400 DEG C；It flow to afterwards on described mobile coldplate；
By described mobile coldplate from head to three sections of regions of portion, control injection flow rate to institute
Blast-furnace slag is cooled down by bottom water spray indirectly that state mobile coldplate:
First paragraph injection flow rate is 40kg/ ton slag, and slag surface temperature drops to 1100 DEG C, internal
Temperature drops to 1250 DEG C, and slag surface forms the solid-state duricrust of thickness 8-10mm, and inside is
Liquid state；
Second segment injection flow rate is 40kg/ ton slag, and slag surface temperature drops to 1050 DEG C, internal
Temperature drops to 1150 DEG C, and it is the solid outer shell of 18-20mm that surface forms thickness, and inside is
Semi liquid state shape；
3rd section of injection flow rate is 20kg/ ton slag, and slag surface temperature drops to 1000 DEG C, internal
Temperature drops to 1050 DEG C, and it is the solid-state like of 48-50mm that slag forms thickness.
Blast-furnace slag after slag treatment device cooling processes, it is shaped as solid-state lamellar, advises
Lattice size is (length × width x thickness) 180 × 350 × 50mm, and temperature is 950-1050 DEG C.
Slag treatment device disposal ability be 80-120 ton slag/hour.
When cooling of furnace slag temperature presses 950-1050 DEG C of control, main material consumption: cooling water consumption
100kg/ ton slag, solid-state coolant addition 50kg/ ton slag.
Preferably, described solid-state coolant is pulverized slag, agstone, powdery construction waste
The compositions of class；
When adding described solid-state coolant, high hopper it is directly added in described storage slag bath,
The mobilization force utilizing slag stream is stirred mixing.
(2) by the described slag heat in the described solid-state slag described heat-exchange system of canned feeding
Switch room 6, Cryogenic air is blasted described slag heat-exchanging chamber 6 by described circulating fan 9, Gu
State slag and described Cryogenic air carry out heat exchange, and the slag being cooled to less than 200 DEG C passes through
Described slag-draining device discharges described slag heat-exchanging chamber 6, the high temperature cigarette of 850-950 DEG C of generation
Gas, after described fume dust remover 7, introduces described waste heat by described circulating fan 9
In steam generator system 8；Described high-temperature flue gas in described afterheat boiler system 8 through heat exchange
The rear superheated steam 12 producing 350-450 DEG C；
Preferably, in step (2), the slag of described solid-state cooling of furnace slag to less than 200 DEG C
During discharging described slag heat-exchanging chamber 6 by described slag-draining device, including:
First pass through described deslagging breaker 10 when being exhausted from system by the slag after cooling to break
After being broken into the bulk that granularity is 40-45mm, then transport through described deslagging belt feeder 11；
Slag carries out after transporting second-time breakage becomes granularity to be less than the bulk of 5mm, then warp
Cross recovery section slag ferrum after magnetic separation, and pack after pulverizing according to demand.Height after treatment
Slag is more suitable for the blend material of cement system, improves the comprehensive utilization of waste residue.
(3) by gas path pipe, the superheated steam 12 of generation is inputted described steam turbine generator
Group generates electricity for described Turbo-generator Set；The low-temperature flue gas produced after heat exchange is through institute
State circulating fan 9 to be redirected back towards described heat-exchange system and be recycled.
Preferably, in step (3), low-temperature flue gas is redirected back towards through described circulating fan 9
In the step that described heat-exchange system is recycled, also include:
Described low-temperature flue gas, after described afterheat boiler system 8 is out, needs to carry out secondary
Dedusting, afterwards, then introduces described slag heat-exchanging chamber 6 after described circulating fan 9 pressurizes；
Preferably, the dedusting carried out the high-temperature flue gas entering described afterheat boiler system 8 is
One-time dedusting, described one-time dedusting is gravitational settling dedusting；Described final dusting is that whirlwind removes
Dirt.
One-time dedusting is gravity sedimentation type dedusting, mainly utilizes recyclegas to include ground-slag self
Gravitational dust collection.It is arranged between cooling chamber and boiler.Final dusting is cyclone dust removal, secondary
Dedusting mainly have monomer cyclone, Whirlwind cyclone fixed plate, airway fixed plate, shell, under
Portion's ash bucket and auxiliary device composition.
After high-temperature flue gas carries out afterheat boiler system 8, in boiler after heat exchange, produce
Raw steam, steam production: 0.4 ton/ton slag.Low temperature slag unloads to belt after preliminary crushing
On conveyer, outer row processes.
The isolated ground-slag of cleaner unit, is collected in storage tank by special conveying equipment,
Outer row processes.
The recovery method that the present invention provides, has process device structure simple, it is easy to operation control
System, maintenance is little, small investment, and floor space is little, it is easy to accomplish industrialized production, energy-conservation
Benefit and economic benefit are the hugest.
Below, use object lesson to further describe the present invention, but the present invention does not limit
Due to these embodiments.
Embodiment 1:
As a example by 480 cubic metres of blast furnaces:
The initial temperature of blast furnace slag 1480 DEG C, produces the quantity of slag 864 ton per day, and blast furnace slag enters stove
Slag treatment device, the first step flows into slag storage slag bath, in slag storage slag bath, according to blast furnace slag
Temperature conditions, by solid-state coolant addition 50kg/ ton slag standard (the initial temperature of blast furnace slag
Spend 1480 DEG C and be down to the standardized amount of 1400 DEG C), adjust addition in good time and add fashionable
Between, after adding solid-state coolant, the temperature of slag is adjusted to 1380-1420 DEG C, and solid-state cools down
It is 43.2 tons that agent adds total amount.
Second step slag flow on mobile coldplate, high temperature furnace slag on mobile coldplate from the beginning
Portion cools down to three sections of Region control injection flow rates of portion.
First paragraph injection flow rate 40kg water/ton slag, high temperature furnace slag processes through first paragraph water-spraying control
After, slag surface temperature drops to 1100 DEG C, and internal temperature drops to 1250 DEG C, slag surface shape
Becoming the solid-state duricrust of thickness about 10mm, inside is liquid state.
Second segment injection flow rate 40kg water/ton slag, high temperature furnace slag processes through second segment water-spraying control
After, slag surface temperature drops to 1050 DEG C, and internal temperature drops to 1150 DEG C, and slag is formed
The solid outside of thickness about 20mm, inside is semi liquid state shape.
3rd section of injection flow rate accounts for 20kg water/ton slag, and high temperature furnace slag is at the 3rd section of water-spraying control
After reason, slag surface temperature drops to 1000 DEG C, and internal temperature drops to 1050 DEG C, slag shape
One-tenth thickness about 50mm's is solid-state like, and there is minimum dispersed liquid object inside.
After water-spraying control, liquid high temperature furnace slag become the high temperature furnace slag of solid-state lamellar, temperature
Spend about 950-1050 DEG C.Slag is loaded and seals in slag ladle, be sent to slag heat exchanger.Its
Total water consumption is 100kg/ ton slag.
Fill the slag pot 2 of slag by under locomotive haulage slag ladle flatcar 1 to lift headframe,
By automatic contraposition device be directed at raised position, elevator slag pot 2 is promoted and traversing extremely
At heat exchanger high position slag ladle distributing device 5, slag ladle distributing device 5 carry out cloth and load slag
Heat-exchanging chamber 6, by circulating fan 9 by the feeder drum bottom slag heat-exchanging chamber 6
Enter slag heat-exchanging chamber 6 and carry out heat exchange with high-temperature solid slag.Slag temperature of entering the room is stablized
When 950-1050 DEG C, the high-temperature flue-gas after heat exchange is about 900 DEG C.High-temperature flue gas
Entering residual heat boiler for exchanging heat after disposable dust remover dedusting, temperature is down to 150 DEG C.High temperature cigarette
The low-temperature flue gas that gas produces after boiler hot exchanges, then add through final dusting and circulating fan 9
It is pressed into and recycles into slag heat-exchanging chamber 6.
Solid-state lamellar slag temperature is 950-1050 DEG C, after slag heat exchange, produces high temperature
Flue gas yield about 108 ten thousand stere high-temperature flue gas/day (1250 cubic metre/ton slag), high temperature cigarette
Temperature is 900 DEG C.Producing steam production after heat exchange is 345.6 ton per days (0.4 tons/ton
Slag), generated energy is 96768 kilowatts. hour/24 hours, equivalent RMB 29030.4 yuan (0.3
Unit/kilowatt. hour), annual gene-ration revenue 10,160,000 (based on 350 days).
By slag temperature≤200 DEG C after over-heat-exchanger cools down, at slag heat-exchanging chamber 6
Lower section forms the bulk of about 40mm after preliminary crushing, deslagging belt be transported to crush
Place, carries out second-time breakage to slag, and granularity ＜ 5mm, by slag ferrum 3 recyclable after magnetic separation
Ton, 3.5kg/t slag, equivalent RMB 0.6 ten thousand yuan, annual slag ferrum income 2,100,000 yuan.
Taking out after blast-furnace slag pulverizing according to customer requirement standard, annual slag total output is
300000 tons (based on 25 yuan/ton), slag is taken out income and is converted into RMB 7,500,000 yuan.
Above three add up to income 19,760,000 yuans.Economic benefits.
Embodiment 2:
As a example by 480 cubes of blast furnaces:
The initial temperature of blast furnace slag 1480 DEG C, produces the quantity of slag 864 ton per day, need to add solid-state cold
But agent 43.2 tons, after adding solid-state coolant, the temperature of slag is adjusted to 1380-1420 DEG C,
Slag enters in cooler, cools down to portion Region control injection flow rate from head,
Final goal control tapping temperature is at 950-1050 DEG C, and total water consumption is 100kg/ ton slag.Warp
After slag heat exchange, produce high-temperature flue gas yield about 108 ten thousand stere high-temperature flue gas/day (1250
Cubic meter/ton slag), high-temperature flue-gas is 900 DEG C.Producing steam production after heat exchange is
345.6 ton per days (0.4 ton/ton slag), generated energy is 96768 degree/day.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention,
For a person skilled in the art, the present invention can have various modifications and variations.All
Within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made,
Should be included within the scope of the present invention.
Claims (7)
1. blast-furnace slag dry-type sensible heat recovery method, it is characterised in that the blast-furnace slag dry type used shows
Recuperation of heat processing system includes: slag handling system, heat-exchange system and Turbo-generator Set；
Described slag handling system is provided with dry type solidification conversion equipment；
Described heat-exchange system is provided with slag heat-exchanging chamber, circulating fan, slag-draining device, flue gas ash removal
Device, afterheat boiler system；
The liquid high temperature furnace slag of 1400-1500 DEG C enters described slag handling system, and solid through described dry type
Change conversion equipment and be cooled to the solid-state slag of 950-1050 DEG C；
Described dry type solidification conversion equipment is storage slag bath and mobile coldplate；
After described liquid high temperature furnace slag enters described dry type solidification conversion equipment, it is introduced into and cools down added with solid-state
The described storage slag bath of agent, controls temperature at 1350-1400 DEG C；Slag flow to described mobile coldplate afterwards
On, described slag is cooled to indirectly the solid-state slag of 950-1050 DEG C；
By transmitting device, described solid-state slag is sent into the described slag heat exchange in described heat-exchange system
Room, described circulating fan is located at the bottom of described slag heat-exchanging chamber and Cryogenic air blasts described slag
In heat-exchanging chamber, described solid-state slag carries out heat exchange fall with the cryogenic gas in described slag heat-exchanging chamber
Temperature discharges described heat-exchange system to less than 200 DEG C through described slag-draining device；The most also produce
The high-temperature flue gas of 850-950 DEG C；Described high-temperature flue gas through described fume dust remover institute and follows described in passing through
Ring blower fan introduces in described afterheat boiler system, produces the superheated steam of 350-450 DEG C after heat exchange；
The superheated steam described Turbo-generator Set of input of generation will be sent out for described steamer by gas path pipe
Group of motors generates electricity；The low-temperature flue gas produced after heat exchange returns described heat through described circulating fan
Exchange system is recycled；
Described blast-furnace slag dry-type sensible heat recovery method comprises the following steps:
(1) the liquid high temperature furnace slag of 1400-1500 DEG C is sent into described slag handling system, and through described
Dry type solidification conversion equipment is cooled to the solid-state slag of 950-1050 DEG C；
Described dry type solidification conversion equipment is storage slag bath and mobile coldplate；
Specifically including, high temperature furnace slag is introduced in the described storage slag bath added with solid-state coolant, and by temperature control
System is at 1350-1400 DEG C；It flow to afterwards on described mobile coldplate；
By described mobile coldplate from head to three sections of regions of portion, control injection flow rate to described mobile cooling
Blast-furnace slag is cooled down by the bottom water spray of plate indirectly:
First paragraph injection flow rate is 40kg/ ton slag, and slag surface temperature drops to 1100 DEG C, and internal temperature drops to
1250 DEG C, slag surface forms the solid-state duricrust of thickness 8-10mm, and inside is liquid state；
Second segment injection flow rate is 40kg/ ton slag, and slag surface temperature drops to 1050 DEG C, and internal temperature drops to
1150 DEG C, it is the solid outer shell of 18-20mm that surface forms thickness, and inside is semi liquid state shape；
3rd section of injection flow rate is 20kg/ ton slag, and slag surface temperature drops to 1000 DEG C, and internal temperature drops to
1050 DEG C, it is the solid-state like of 48-50mm that slag forms thickness；
(2) by the described slag heat-exchanging chamber in the described solid-state slag described heat-exchange system of canned feeding,
Cryogenic air is blasted described slag heat-exchanging chamber, solid-state slag and described Cryogenic air and enters by described circulating fan
Row heat exchange, the slag being cooled to less than 200 DEG C passes through the described slag-draining device described slag heat-exchanging chamber of discharge,
The high-temperature flue gas of 850-950 DEG C produced is after described fume dust remover, by described circulated air power traction
Enter in described afterheat boiler system；Described high-temperature flue gas produces in described afterheat boiler system after heat exchange
The superheated steam of raw 350-450 DEG C；
(3) by gas path pipe, the superheated steam produced is inputted in described Turbo-generator Set for described vapour
Turbine generator group generates electricity；The low-temperature flue gas produced after heat exchange is redirected back towards institute through described circulating fan
State heat-exchange system to be recycled.
Blast-furnace slag dry-type sensible heat recovery method the most according to claim 1, it is characterised in that
The outside of described slag heat-exchanging chamber is additionally provided with traversing traction apparatus, lift headframe and crane；
Described slag heat-exchanging chamber is cylindrical cavity, and its top is provided with slag and fills distributing device, described circulating fan
It is each provided at the bottom of described slag heat-exchanging chamber with described slag-draining device and sets up both sides separately；
The sidewall of described slag heat-exchanging chamber is provided with a connecting pipeline, described fume dust remover and institute
State afterheat boiler system to be each provided in described connecting pipeline；
The end of described connecting pipeline is provided with a connecting pipeline and connects with described circulating fan, near described
The side of one end of connecting pipeline is provided with one for connecting the overheated steaming of feed with described Turbo-generator Set
The gas path pipe of vapour.
Blast-furnace slag dry-type sensible heat recovery method the most according to claim 1, it is characterised in that
Described slag-draining device includes deslagging breaker and deslagging belt feeder.
Blast-furnace slag dry-type sensible heat recovery method the most according to claim 1, it is characterised in that
Described solid-state coolant is pulverized slag, agstone, the compositions of powdery construction waste class；
When adding described solid-state coolant, high hopper it is directly added in described storage slag bath, utilizes slag stream
Mobilization force be stirred mixing.
Blast-furnace slag dry-type sensible heat recovery method the most according to claim 1, it is characterised in that
In step (2), the slag of described solid-state cooling of furnace slag to less than 200 DEG C is arranged by described slag-draining device
During going out described slag heat-exchanging chamber, including:
Slag after cooling is first passed through described deslagging breaker when being exhausted from system it is broken into granularity and be
After the bulk of 40-45mm, then transport through described deslagging belt feeder；
Slag carries out after transporting second-time breakage becomes granularity to be less than the bulk of 5mm, then returns after magnetic separation
Receiving portions slag ferrum, and pack after pulverizing according to demand.
Blast-furnace slag dry-type sensible heat recovery method the most according to claim 1, it is characterised in that:
In step (3), low-temperature flue gas is redirected back towards described heat-exchange system through described circulating fan and is followed
In the step that ring utilizes, also include:
Described low-temperature flue gas, after described afterheat boiler system is out, needs to carry out final dusting, it
After, then introduce described slag heat-exchanging chamber after described circulating fan pressurizes.
Blast-furnace slag dry-type sensible heat recovery method the most according to claim 6, it is characterised in that
Be one-time dedusting to entering the dedusting that carries out of high-temperature flue gas of described afterheat boiler system, described once
Dedusting is gravitational settling dedusting；Described final dusting is cyclone dust removal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410331475.9A CN104073578B (en) | 2014-07-11 | 2014-07-11 | The dry-type sensible heat recovery and processing system of blast-furnace slag and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410331475.9A CN104073578B (en) | 2014-07-11 | 2014-07-11 | The dry-type sensible heat recovery and processing system of blast-furnace slag and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104073578A CN104073578A (en) | 2014-10-01 |
| CN104073578B true CN104073578B (en) | 2016-08-03 |
Family
ID=51595181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410331475.9A Active CN104073578B (en) | 2014-07-11 | 2014-07-11 | The dry-type sensible heat recovery and processing system of blast-furnace slag and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104073578B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106500079A (en) * | 2015-09-06 | 2017-03-15 | 姜学仕 | Superheated steam circulation method residues processing technique |
| CN106195986B (en) * | 2016-08-28 | 2018-11-16 | 华电电力科学研究院 | W flame boiler waste heat utilization system with furnace bottom hot wind |
| CN109539821B (en) * | 2018-10-19 | 2021-03-12 | 天津大学 | Method and device for recycling heat energy of high-temperature metallurgical slag |
| CN109297005A (en) * | 2018-11-05 | 2019-02-01 | 南京凯盛开能环保能源有限公司 | A kind of boiler plant and method of the afterheat generating system suitable for blast-furnace cement sensible heat recycling |
| CN109737752B (en) * | 2018-12-13 | 2020-12-18 | 太和县奥能金属材料有限公司 | Metal smelting furnace |
| CN114292970A (en) * | 2021-12-09 | 2022-04-08 | 上海发电设备成套设计研究院有限责任公司 | Device system and method for recycling waste heat of smelting furnace slag |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102433401A (en) * | 2011-12-20 | 2012-05-02 | 南京凯盛开能环保能源有限公司 | Melting furnace slag quenching dry type granulation and sensible heat recovery generating system and method using same |
| CN102559957A (en) * | 2012-02-09 | 2012-07-11 | 南京凯盛开能环保能源有限公司 | Centrifugal type fusion slag quenching and dry type granulating, and waste heat recovery power generation system and method |
| CN102690910A (en) * | 2012-05-31 | 2012-09-26 | 四川川润股份有限公司 | Dry-method treatment and waste heat continuous utilization system for blast-furnace slag |
| CN102690908A (en) * | 2012-05-31 | 2012-09-26 | 四川川润股份有限公司 | Heat recovery system and heat recovery process of blast-furnace slag by dry granulation |
| CN102827969A (en) * | 2012-09-06 | 2012-12-19 | 西安交通大学 | Afterheat recovery system and method of dry granulating liquid slag |
-
2014
- 2014-07-11 CN CN201410331475.9A patent/CN104073578B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102433401A (en) * | 2011-12-20 | 2012-05-02 | 南京凯盛开能环保能源有限公司 | Melting furnace slag quenching dry type granulation and sensible heat recovery generating system and method using same |
| CN102559957A (en) * | 2012-02-09 | 2012-07-11 | 南京凯盛开能环保能源有限公司 | Centrifugal type fusion slag quenching and dry type granulating, and waste heat recovery power generation system and method |
| CN102690910A (en) * | 2012-05-31 | 2012-09-26 | 四川川润股份有限公司 | Dry-method treatment and waste heat continuous utilization system for blast-furnace slag |
| CN102690908A (en) * | 2012-05-31 | 2012-09-26 | 四川川润股份有限公司 | Heat recovery system and heat recovery process of blast-furnace slag by dry granulation |
| CN102827969A (en) * | 2012-09-06 | 2012-12-19 | 西安交通大学 | Afterheat recovery system and method of dry granulating liquid slag |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104073578A (en) | 2014-10-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104073578B (en) | The dry-type sensible heat recovery and processing system of blast-furnace slag and method | |
| WO2017152784A1 (en) | System and method for dry centrifugal granulation of high_temperature liquid slag and exhaust heat recovery | |
| CN104988255B (en) | A kind of liquid slag waste heat recovery and the method and apparatus system of tailings ultra micro efflorescence | |
| CN102183152B (en) | Steel enterprise associated energy combined cycle power generation system and method | |
| US9581387B2 (en) | Method for iron-making with full oxygen and hydrogen-rich gas and equipment thereof | |
| CN104975117B (en) | A kind of blast furnace slag integrated treatment and Exposure degree electricity generation system and method | |
| CN110982967A (en) | Method and device for realizing steel slag quenching and waste heat recovery by using water and carbon dioxide | |
| CN102268495A (en) | Process technology and equipment for granulating blast-furnace slag and utilizing waste heat | |
| CN111118239B (en) | Modular natural convection boiler system for recovering waste heat of liquid slag | |
| CN102827640A (en) | Partially-chilled dry coal powder or coal water slurry gasification system and gasification process | |
| CN202898362U (en) | Partially chilled dry pulverized coal or coal water slurry gasification system | |
| CN104404179A (en) | Liquid high temperature material waste heat recovery unit | |
| CN105567889A (en) | Cascade utilization system for blast furnace slag waste heat | |
| CN109722496A (en) | A kind of dry-type pulverizing dross sensible heat recovery system and electricity generation system | |
| CN110117164A (en) | A kind of device and method of pair of fusion smelting slag glass granulation and waste heat recycling | |
| CN102776302B (en) | Liquid slag waste heat recovery device and method for recovering slag waste heat by utilizing same | |
| CN101864504B (en) | Method for raising air temperature of hot blast stove by recovering sensible heat of blast furnace slag | |
| CN105154604B (en) | Improve the method and device of Iron-smelting efficiency | |
| CN107906971B (en) | High, medium and low waste heat recycling system for solidification heat of blast furnace ore slag | |
| CN116164549B (en) | Liquid copper smelting furnace slag waste heat recovery device and treatment method thereof | |
| CN1081312C (en) | Method for recovering waste heat from scoria | |
| CN216432548U (en) | Blast furnace slag steel ball granulation waste heat recovery system | |
| CN217498686U (en) | System for entrained flow decomposes ardealite | |
| CN104263415A (en) | Dry pulverized coal gasification device | |
| CN101831516A (en) | Steel slag dry processing device and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220803 Address after: 617100 Anning Industrial Park, Tongzilin Town, Yanbian County, Panzhihua City, Sichuan Province Patentee after: YANBIAN XIANGYANG VANADIUM INDUSTRY Co.,Ltd. Address before: No. 304, 3rd Floor, Unit 3, Building 7, No. 399, West Section of Fucheng Avenue, High-tech Zone, Chengdu 610000, Sichuan Province Patentee before: SICHUAN LISHENG HUANNENG SCIENCE & TECHNOLOGY Co.,Ltd. |
|
| TR01 | Transfer of patent right |