CN103642956B - Liquid blast furnace slag granulation and multiple-roll residual neat recovering system - Google Patents

Liquid blast furnace slag granulation and multiple-roll residual neat recovering system Download PDF

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CN103642956B
CN103642956B CN201310656436.1A CN201310656436A CN103642956B CN 103642956 B CN103642956 B CN 103642956B CN 201310656436 A CN201310656436 A CN 201310656436A CN 103642956 B CN103642956 B CN 103642956B
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storehouse
water
slag
blast furnace
cylinder
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CN103642956A (en
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郑岩
张鹏
谈庆
雷震东
王红军
徐长存
张玉军
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Wuxi Dongfang Environmental Engineering Design & Research Institute Co Ltd
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Wuxi Dongfang Environmental Engineering Design & Research Institute Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies

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Abstract

The invention discloses a kind of liquid blast furnace slag granulation and multiple-roll residual neat recovering system, comprise one-level vaporization drum granulation storehouse, secondary vaporization cylinder storage silo, three grades of cylinder water coolers and residual neat recovering system, the opening for feed in described one-level vaporization drum granulation storehouse is provided with liquid slag chute and pelletizer, and one-level vaporization drum granulation storehouse, secondary vaporization cylinder storage silo, three grades of cylinder water coolers are connected in series; Described one-level vaporization drum granulation storehouse, secondary vaporization cylinder storage silo and three grades of cylinder water coolers are provided with carbonated drink import and export; Described residual neat recovering system comprises the service pump, deoxygenator and the drum that are communicated with by water pipe.The present invention the waste heat of cascade utilization blast furnace slag can produce high-grade saturation steam, and improves waste residue utilization grade by the quick cooling of solid slag, and overall process runs continuously not by the impact of blast furnace resting period.

Description

Liquid blast furnace slag granulation and multiple-roll residual neat recovering system
Technical field
The present invention relates to Metallurgy Energy Saving environmental technology field, particularly a kind for the treatment of system of high-temperature liquid furnace slag.
Background technology
Blast furnace slag is the byproduct of ironmaking, and the outflow temperature of blast furnace slag is at about 1400 DEG C, and blast furnace slag institute per ton heat content reaches 1.8GJ, about amounts to 64kg standard coal institute heat content.Meanwhile, among the waste residue that blast furnace slag treatment process is finally discharged, containing very useful active ingredient, although because its activeconstituents of difference difference to some extent for the treatment of process, all can as building the road, the raw material of the industry such as cement is applied.
The main method of traditional process blast furnace slag is wet method water quenching, the method technique is simple, and waste residue byproduct can be reclaimed, but can not waste heat be utilized, and consume a large amount of water coolant, and producing obnoxious flavour, therefore current technology mainly develops the alternative techniques of water quenching, is also dry method waste heat reclaiming process.Various dry granulation technique can be saved a large amount of water resourcess and be avoided wet method to generate sulfide obnoxious flavour, and representative dry process is wind crush method and revolving cup method mainly.Wherein: 1) wind crush method adopts pressurized air or nitrogen injection melting slag liquid to form solid impurity particle, 2) revolving cup rule utilizes the revolving cup of high speed rotating or rotating disk to be granulated by the slag liquid be poured on revolving cup (dish).For many years, be that wind crush method revolving cup method all stops at type approval test, and focus on waste heat recovery more, and the pair ignoring residue product adds value utilization, or, utilize although residue product also can be realized, but abandon waste heat value.On the whole, the two incomes both technically simultaneously not realizing, the two becomes the contradictory factor conditioned each other more.
Summary of the invention
The technical problem that the present invention solves is to provide a kind of blast furnace slag processing system that can reclaim high-temperature liquid state blast furnace slag waste heat simultaneously and realize the utilization of waste residue higher-grade.
For solving the problems of the technologies described above, the technical solution used in the present invention is as follows.
Liquid blast furnace slag granulation and multiple-roll residual neat recovering system, comprise one-level vaporization drum granulation storehouse, secondary vaporization cylinder storage silo, three grades of cylinder water coolers and residual neat recovering system, the opening for feed in described one-level vaporization drum granulation storehouse be provided with is communicated with tap cinder mouth for carrying the liquid slag chute of blast furnace slag and carrying out to blast furnace slag the pelletizer that fragmentation is granulated, the discharge port in one-level vaporization drum granulation storehouse is communicated with by the vaporize opening for feed of cylinder storage silo of tremie pipe and secondary, the discharge port of secondary vaporization cylinder storage silo is communicated with by the opening for feed of tremie pipe with three grades of cylinder water coolers, the discharge port of three grades of cylinder water coolers is communicated with slag particle collection device by tremie pipe, described one-level vaporization drum granulation storehouse, secondary vaporization cylinder storage silo and three grades of cylinder water coolers are provided with carbonated drink import and export, described residual neat recovering system comprises the service pump be communicated with water source by water pipe, the water side of service pump is communicated with deoxygenator and drum by water pipe, and the water coolant exported from deoxygenator flows to drum successively behind three grades of cylinder water coolers, secondary vaporization cylinder storage silo and one-level vaporization drum granulation storehouse.
Improvement of the present invention is: described one-level vaporization drum granulation storehouse, secondary vaporization cylinder storage silo and three grades of cylinder water coolers are also respectively arranged with slag wool outlet, the cotton system of slag wool outlet exhausting collection; The cotton system of described exhausting collection comprise vaporize by air draft pipe slag wool outlet that drum granulation storehouse, secondary vaporize on cylinder storage silo and three grades of cylinder water coolers respectively with one-level catch cotton device, catch cotton device and be communicated with induced draft fan by air draft pipe.
Improvement of the present invention is: described one-level vaporization drum granulation storehouse, secondary vaporization cylinder storage silo and three grades of cylinder water coolers are and are supported and the tube structure of laterally placing by bracing frame, the wall of cylindrical shell adopts membrane type close arranging pipe arranged in series to form, and cylindrical shell drives axle centered by body centre axis to rotate by the driving mechanism being arranged on warehouse outside; The turnover water end (W.E.) of described membrane type close arranging pipe is communicated with carbonated drink import and export.
Improvement of the present invention is: between described water source and service pump, water pipe is provided with softening water tank, and every section of water pipe in described residual neat recovering system arranges a water valve respectively.
Improvement of the present invention is: described in catch between cotton device and induced draft fan every section of air draft pipe on an air-valve is set respectively.
The concrete structure in one-level vaporization drum granulation storehouse of the present invention is: described one-level vaporization drum granulation storehouse comprises the preposition storehouse be interconnected, middle storehouse and rearmounted storehouse; Described liquid slag chute and pelletizer are all arranged on the opening for feed place in preposition storehouse, the rear end in preposition storehouse adopts mechanical seal to be connected with the front end in middle storehouse, the rear end in middle storehouse adopts mechanical seal to be connected with the front end in rearmounted storehouse, and carbonated drink import and export is arranged on the distal center in rearmounted storehouse; Described middle storehouse is the rotatable tube structure adopting membrane type close arranging pipe arranged in series, and be provided with spiral conveying cooling tube in the inner chamber of middle storehouse, the turnover water end (W.E.) of membrane type close arranging pipe is imported and exported respectively by pipeline communication carbonated drink.
The improvement in one-level vaporization drum granulation storehouse of the present invention is: the posterior segment of described middle storehouse inner chamber is also laid with material curtain abrasionproof and raises plate.
The improvement in one-level vaporization drum granulation storehouse of the present invention is: the cross section in described middle storehouse is circular or Polygons, and in cartridge type, the longitudinal section in storehouse is rectangle, the little olive shape broad in the middle in two or one large one small pyramidal structure.
The improvement in one-level vaporization drum granulation storehouse of the present invention is: the top in described preposition storehouse and the top in rearmounted storehouse are respectively arranged with the quick coagulator for injecting device towards preposition storehouse inner chamber and middle storehouse inner chamber.
Owing to have employed above technical scheme, the invention technological progress is as follows.
The present invention only needs a heat exchange to produce steam, be different from warm sludge and convert the traditional technology that hot blast, hot blast are converted to steam again to, the present invention adopts multiple rollers to cool blast furnace slag, achieve the cascade utilization of slag waste heat, intermitting heating is converted to continuous heat supply simultaneously, improves waste heat recovery efficiency.Water cooled membrane cylinder can direct production High Temperature High Pressure hot water, only needs flash distillation just for steam user, can improve the grade of UTILIZATION OF VESIDUAL HEAT IN.The design of three grades of cylinders, each important temperature around the chemically changed of blast furnace slag active ingredient is interval, by quickly through for the purpose of 1200 DEG C of tricalcium silicate decomposition points, about 700 DEG C β phase Dicalcium Phosphate (Feed Grade) decomposition points, remain the active ingredient of blast furnace slag to greatest extent, what improve waste residue utilizes grade.
The design of multiple rollers of the present invention, is convenient to the quantity of slag and the retention time that regulate each section of buffer memory, effectively can alleviate contradiction between operation of blast furnace intermittence and UTILIZATION OF VESIDUAL HEAT IN continuity.The cooling of high-temperature liquid state slag is airtight to be carried out, and does not directly contact with water, without explosion hazard and personal injury hidden danger.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation in one-level of the present invention vaporization drum granulation storehouse.
Wherein: 1, air compressor, 2, pelletizer, 3, liquid slag chute, 41-43, catch cotton device, 5, one-level vaporization drum granulation storehouse, 51, preposition storehouse, 52, middle storehouse, 53, rearmounted storehouse, 54, slag wool exports, 55, carbonated drink is imported and exported, 56, barrel, 57, material curtain abrasionproof raises plate, 58, spiral conveying cooling tube, 59, quick coagulator for injecting device, 6, drum, 7, steam user, 81-83, tremie pipe, 9, secondary vaporization cylinder storage silo, 10, three grades of cylinder water coolers, 11, deoxygenator, 12, softening water tank, 13, service pump, 14, induced draft fan, 15, aiutage, 161-164, air-valve, 171-175 water valve.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further elaborated.
A kind of liquid blast furnace slag granulation and multiple-roll residual neat recovering system, adopt high pressure gas to carry out fragmentation to blast furnace slag, and adopt plural serial stage roll form to carry out step cooling and waste heat recovery to slag particle.
The structure of the present embodiment as shown in Figure 1, comprises thtee-stage shiplock cylinder, the cotton system of exhausting collection and residual neat recovering system, and wherein thtee-stage shiplock cylinder comprises one-level vaporization drum granulation storehouse 5, secondary vaporization cylinder storage silo 9 and three grades of cylinder water coolers 10; The discharge port in one-level vaporization drum granulation storehouse 5 is communicated with by the vaporize opening for feed of cylinder storage silo 9 of tremie pipe and secondary; the discharge port of secondary vaporization cylinder storage silo 9 is communicated with by the opening for feed of tremie pipe with three grades of cylinder water coolers 10, and the discharge port of three grades of cylinder water coolers 10 is communicated with slag particle collection device by tremie pipe.
First step cooling for collecting the high-temperature liquid state slag particle of about 1400 DEG C of pelletizer ejection, and is carried out in described one-level vaporization drum granulation storehouse 5.Its structure as shown in Figure 2, comprise be interconnected preposition storehouse 51, middle storehouse 52 and rearmounted storehouse 53.The front end in preposition storehouse 51 is provided with opening for feed, and the bottom in rearmounted storehouse 53 is provided with discharge port, and the rear end in preposition storehouse 51 adopts mechanical seal to be connected with the front end in middle storehouse 52, and the rear end in middle storehouse adopts mechanical seal to be connected with the front end in rearmounted storehouse.Middle storehouse is rotatable equipment, and preposition storehouse and rearmounted storehouse not rotatable.
The front end in preposition storehouse 51 is provided with liquid slag chute 3 and pelletizer 2, and the top in preposition storehouse is provided with slag wool outlet 54, and the bottom in preposition storehouse is provided with slag-drip opening.Liquid slag chute 3 is communicated with the opening for feed in tap cinder mouth and preposition storehouse, sends into preposition storehouse for the blast furnace slag exported by tap cinder mouth, and preposition storehouse is also communicated with air by opening for feed simultaneously.
The input terminus of pelletizer 2, by pipeline communication air compressor 1, this pipeline is provided with air-valve 161, regulates high speed winds flow.The blast furnace slag that pelletizer 2 adopts high-speed gas liquid towards slag chute to send into preposition storehouse carries out fragmentation granulation.The setting of preposition storehouse bottom slag discharge, is mainly used in discharging the blast furnace slag dropped in preposition storehouse, is also referred to as accident slag-drip opening.
Middle storehouse 52 arranged transversely, middle storehouse is supported by the two cover bracing frames be set up in parallel, and drives rotation by the driving mechanism being arranged on warehouse outside, and middle storehouse is in rotary course, and centered by the central axis in middle storehouse, axle rotates.Middle storehouse is cartridge type enclosure, and the wall in middle storehouse adopts membrane type close arranging pipe arranged in series to form, and barrel diameter is 2 ~ 4m.In cartridge type, the cross section in storehouse is circular in the present embodiment, and in cartridge type, the longitudinal section in storehouse is rectangle, and namely in cartridge type, storehouse is cylindrical structure.In certain cartridge type, the cross section in storehouse can also be Polygons, and in cartridge type, the longitudinal section in storehouse can also be the little olive shape broad in the middle in two or one large one small pyramidal structure.Membrane type close arranging pipe is communicated with residual neat recovering system, and the heat transferring medium in membrane type close arranging pipe is the one in water, saturation water, undersaturation water or steam water interface.
In cartridge type storehouse inner chamber in be provided with spiral conveying cooling tube 58, in the turning course of middle storehouse to rearmounted storehouse conveying slag charge, play certain cooling heat transferring effect simultaneously.The posterior segment of middle storehouse inner chamber is also laid with material curtain abrasionproof and raises plate 57, and material curtain abrasionproof raises the plate hight of plate 57 higher than middle silo wall.The solid slag particle shape kicking up floating while the effect that material curtain abrasionproof raises plate is conveying becomes material curtain, both the flying distance of liquid slag can have been controlled, turn avoid larger liquid slag particle or the sticky wall effect of part semi liquid state slag particle generation, and by the high calorie indirect branch of liquid state local to solid slag; In addition, also can play interception function to the solid-state slag particle injected at a high speed, in can protecting, the bulkhead heat transfer tube of storehouse back segment is from directly washing away, and plays the effect of enhanced heat exchange.
The distal center in rearmounted storehouse is provided with carbonated drink import and export, and the front end that carbonated drink is imported and exported is communicated with membrane type close arranging pipe, and the rear end that carbonated drink is imported and exported is communicated with residual neat recovering system by pipeline.Being provided with discharge port bottom the end in rearmounted storehouse, cooling and solid-state slag particle after pulverizing for discharging.The top in rearmounted storehouse is provided with slag wool outlet.
The top in preposition storehouse and the top in rearmounted storehouse are respectively arranged with quick coagulator for injecting device 59, the quick coagulator for injecting device in preposition storehouse is arranged in the middle part of preposition storehouse, the quick coagulator for injecting device in rearmounted storehouse is arranged towards middle storehouse inner chamber, for to preposition storehouse and middle storehouse jeting surface peptizer, micro mist release agent or related liquid medium, and can according to the quality of slag particle, regulate the flow of accelerating chemicals, to improve the availability of slag ingredient.
Secondary vaporization cylinder storage silo, for slag temperature is down to about 350 DEG C from about 900 DEG C, adopt F.F. to go out mode slowly, the intermittent slag input that drum granulation storehouse of one-level being vaporized transports changes into slags tap material continuously and completes secondary heat exchange.The vaporize middle chamber structure in drum granulation storehouse of secondary vaporization cylinder storage silo structure and one-level is identical, is rotatable equipment.Be provided with carbonated drink import and export in the middle part of the rear end of secondary vaporization cylinder storage silo, upper rear end is provided with slag wool outlet.
Three grades of vaporization cylinder water coolers, the grain slag sent here for cylinder storage silo of being vaporized by secondary is down within 200 DEG C by 350 DEG C, adopts the continuous operation mode of uniform feeding, uniform discharge.Be provided with carbonated drink import and export in the middle part of the rear end of three grades of vaporization cylinder water coolers, upper rear end is provided with slag wool outlet.
Described residual neat recovering system comprises softening water tank 12, service pump 13, deoxygenator 11 and drum 6, the water-in of softening water tank 12 is communicated with water source by water pipe, the water outlet of softening water tank 12 is communicated with by the water-in of water pipe with service pump 13, the water outlet of service pump 13 is communicated with by the water-in of water pipe with deoxygenator 11, the water outlet of deoxygenator 11 is by the carbonated drink inlet communication of water pipe and three grades of cylinder water coolers 10, the carbonated drink outlet of three grades of cylinder water coolers 10 to be vaporized by water pipe and secondary the carbonated drink inlet communication of cylinder storage silo 9, the carbonated drink outlet of secondary vaporization cylinder storage silo 9 is vaporized by water pipe and one-level the carbonated drink inlet communication in drum granulation storehouse 5, the carbonated drink outlet in one-level vaporization drum granulation storehouse 5 is communicated with by the water-in of water pipe with drum 6, the water outlet of drum 6 is communicated with steam user 7 by pipeline.
Water pipe between above-mentioned service pump 13 and deoxygenator 11 is provided with water valve 171; water pipe between deoxygenator 11 and three grades of cylinder water coolers 10 is provided with water valve 172; three grades of cylinder water coolers 10 and water pipe that secondary is vaporized between cylinder storage silo 9 is provided with water valve 173; the water pipe that secondary vaporization cylinder storage silo 9 and one-level are vaporized between drum granulation storehouse 5 is provided with water valve 174, the water pipe between one-level vaporization drum granulation storehouse 5 and drum 6 is provided with water valve 175.The setting of water valve is used for the discharge controlling corresponding water pipe respectively.
The cotton system of exhausting collection easily to produce the collection problem of slag wool in shattering process for solving low alkalinity blast furnace slag, by slag particle in the middle-chain exhausting of flight and conveying thus be separated slag tap in the slag wool that mixes, and slag wool is tackled, collect and compress packing.The cotton system of exhausting collection is configured mainly for blast furnace slag and low-basicity slag treatment system similarly, and centering high alkalinity slag, what all granulatings produced without slag wool all can configure.
The cotton system of exhausting collection comprises catches cotton device, induced draft fan 14 and aiutage 15.Catch cotton device and arrange three altogether, arrange for the slag wool outlet on one-level vaporization drum granulation storehouse 5, secondary vaporization cylinder storage silo 9 and three grades of cylinder water coolers 10 respectively.Wherein, the slag wool outlet in one-level vaporization preposition storehouse, drum granulation storehouse 5 and the slag wool outlet in rearmounted storehouse are communicated with by air draft pipe catches cotton device 41; the slag wool outlet of secondary vaporization cylinder storage silo 9 is communicated with by air draft pipe catches cotton device 42; slag wool outlet on three grades of cylinder water coolers 10 is communicated with by air draft pipe catches cotton device 43; catch cotton device for three to be communicated with induced draft fan 14 respectively by air draft pipe, induced draft fan is communicated with aiutage 15 by air draft pipe.
Above-mentioned three three air draft pipes of catching between cotton device and induced draft fan 14 arrange an air-valve 162 ~ 164, respectively for controlling exhausting amount.
Working process of the present invention is as described below:
In the course of the work, the middle storehouse in one-level vaporization drum granulation storehouse 5, secondary vaporization cylinder storage silo 9 and three grades of cylinder water coolers 10 rotate around central axis respectively under the driving of respective drive mechanism in the present invention.
High-temperature liquid state blast furnace slag is sent into after the preposition storehouse in one-level vaporization drum granulation storehouse 5 from liquid slag chute, air compressor 1 provides the air of about more than 0.6Mpa (can also be nitrogen or steam etc.) pressurized gas to pelletizer, high-temperature liquid state blast furnace slag be granulated under the winding-up of pelletizer the solid-state of about mean diameter 2mm or semi-solid state particle become scattered about within storehouse, liquid and semi liquid state slag particle encounter soon in middle storehouse in storehouse heat exchange cooling barrel 56 on condense rapidly and peel off, part slag particle is directly raised material curtain that plate 12 formed and is bumped against and fall with material curtain abrasionproof, and in turning motion, complete the heat exchange with barrel 56, complete temperature from the quick process of cooling of about 1400 DEG C to about 900 DEG C, subsequently, slag particle sends into rearmounted storehouse under the effect of spiral conveying cooling tube, the slag particle in rearmounted storehouse enters through tremie pipe 81 cooling that secondary vaporization cylinder storage silo carries out subordinate phase, and temperature is that the slag particle of about 900 DEG C cools to about 350 DEG C by secondary vaporization cylinder storage silo employing conventional chilling mode, enter finally by tremie pipe 82 cooling heat transferring that three grades of cylinder water coolers carry out the phase III, discharge below heat exchange to 200 DEG C, the cold slag of output can be used as cement and adds raw material.
High-temperature liquid state blast furnace slag is in granulating; the slag heat adopting pump circulation to absorb in cylinder by hot water in the membrane wall pipe of one-level vaporization drum granulation storehouse, secondary vaporization cylinder storage silo and three grades of cylinder water coolers produces saturation steam, and pressure can reach more than 1.0Mpa.
The slag wool produced in granulating completes to collect be separated by catching cotton device under the effect of induced draft fan, is discharged (determining whether add fly-ash separator according to dust-laden situation) from induced draft fan hot blast out finally by after induced draft fan 14 by aiutage 15.
In synchronous granulating; the cold water exported from water source is after softening water tank is softening; under the acting of service pump 13, enter deoxygenator 11 form deaerated water; deaerated water enters three grades of cylinder water coolers 10, secondary vaporization cylinder storage silo 9 and one-level vaporization drum granulation storehouse 5 successively and carries out heat exchange intensification; the High Temperature High Pressure hot water finally generated enters drum 6, flashes to saturation steam for steam user 7.
Below for the engineering design of certain test subject, the processing requirement of cylinder at different levels is described in detail:
1, the processing requirement in one-level vaporization drum granulation storehouse 5
One-level vaporization drum granulation storehouse 5 belongs to high temperature section, drops to 900 DEG C between whole cooling area from 1400 DEG C.Blast furnace slag sprays in middle storehouse with small droplets form from preposition storehouse fragmentation granulation; preposition storehouse is semiclosed; the free flight distance about 8 ~ 10m of slag particle in middle storehouse; by the feeding of spiral conveying cooling tube; the material curtain abrasionproof of postmedian is raised plate and is arranged as required and can form material curtain; to control flying distance and to realize the antiseized function of abrasionproof
Each treatment cycle is 1.5h, moves in circles, 16 cycles of every day.Wherein, slag input only continues 30min, slag flow 1.2t/min, and slag enters in middle storehouse with molten state small droplets (solidifying rear 1-5mm) form; Slag particle discharged by last slag notch.In the whole cycle, adopt the mode of being interrupted slag input, slagging tap continuously; Slag inlet temperature is about 1400 DEG C, tapping temperature about 900 DEG C; Flow of slagging tap is 0.4t/min; Cooling water flow is 12.8t/h, and cooling water inlet temperature is 220 DEG C (steam water interfaces), and cooling water outlet temperature is 220 DEG C (steam water interfaces), and water coolant operating pressure is 2.5Mpa (G), and steam is interrupted generation, and drum exports steam continuously.Steam water interface is saturation water and saturation steam composition, and importing and exporting steam temperature identical be all temperature of saturation, but enthalpy is different, therefore can realize heat exchange, because steam-water mixing ratio difference and evaporation of water latent heat numerical value is much higher than saturation water enthalpy.
2, the processing requirement of secondary vaporization cylinder storage silo
Secondary vaporization cylinder storage silo belongs to middle-temperature section, and drop to 350 DEG C from 900 DEG C between whole cooling area, this equipment is conventional continuously feeding mode, but should take into full account blast furnace slag materialization heat transfer characteristic, to the mass transport characteristic under the wearing and tearing of equipment and rolling condition.
In secondary vaporization cylinder storage silo working process, F.F. is adopted to go out mode slowly; Slag treatment amount is 24t/h, and slag inlet temperature is 900 DEG C, and slag temperature out is 350 DEG C; Cooling water flow is 12.8t/h; Cooling water inlet temperature is 150 DEG C, and cooling water outlet temperature is 220 DEG C (steam water interfaces), and water coolant operating pressure is 2.5Mpa (G).
3, the processing requirement of three grades of vaporization cylinder water coolers
Three grades of vaporization cylinder water coolers belong to low-temperature zone, and drop to 250 DEG C from 350 DEG C between whole cooling area, this equipment is conventional continuously feeding mode, but should take into full account blast furnace slag materialization heat transfer characteristic, to the mass transport characteristic under the wearing and tearing of equipment and rolling condition.
In three grades of vaporization cylinder water cooler working process, adopt the continuous operation mode of uniform feeding, uniform discharge; Slag treatment amount is 24t/h, and slag inlet temperature is 350 DEG C, and slag temperature out is 250 DEG C; Cooling water flow is 12.8t/h; Cooling water inlet temperature is 104 DEG C, and cooling water outlet temperature is 150 DEG C, and water coolant operating pressure is 1.5Mpa (G).

Claims (8)

1. liquid blast furnace slag granulation and multiple-roll residual neat recovering system, it is characterized in that: comprise one-level vaporization drum granulation storehouse (5), secondary vaporization cylinder storage silo (9), three grades of cylinder water coolers (10) and residual neat recovering system, the opening for feed of described one-level vaporization drum granulation storehouse (5) be provided with is communicated with tap cinder mouth for carrying the liquid slag chute (3) of blast furnace slag and carrying out to blast furnace slag the pelletizer (2) that fragmentation is granulated, one-level vaporization drum granulation storehouse (5) and secondary are vaporized cylinder storage silo (9), respectively by tremie pipe serial communication between secondary vaporization cylinder storage silo (9) and three grades of cylinder water coolers (10), the discharge port of three grades of cylinder water coolers (10) is communicated with slag particle collection device by tremie pipe,
Described one-level vaporization drum granulation storehouse (5), secondary vaporization cylinder storage silo (9) and three grades of cylinder water coolers (10) are provided with carbonated drink import and export;
Described residual neat recovering system comprises the service pump (13) be communicated with water source by water pipe, the water side of service pump is communicated with deoxygenator (11) and drum (6) by water pipe, and the water coolant exported from deoxygenator flows to drum (6) successively after three grades of cylinder water coolers (10), secondary vaporization cylinder storage silo (9) and one-level vaporization drum granulation storehouse (5);
Described one-level vaporization drum granulation storehouse (5), secondary vaporization cylinder storage silo (9) and three grades of cylinder water coolers (10) are and are supported and the tube structure of laterally placing by bracing frame, the wall of cylindrical shell adopts membrane type close arranging pipe arranged in series to form, and cylindrical shell drives axle centered by body centre axis to rotate by the driving mechanism being arranged on warehouse outside; The turnover water end (W.E.) of described membrane type close arranging pipe is communicated with carbonated drink import and export.
2. liquid blast furnace slag granulation according to claim 1 and multiple-roll residual neat recovering system, it is characterized in that: described one-level vaporization drum granulation storehouse (5), secondary vaporization cylinder storage silo (9) and three grades of cylinder water coolers (10) are also respectively arranged with slag wool outlet, the cotton system of slag wool outlet exhausting collection; The cotton system of described exhausting collection comprise vaporize by air draft pipe slag wool outlet that drum granulation storehouse (5), secondary vaporize on cylinder storage silo (9) and three grades of cylinder water coolers (10) respectively with one-level catch cotton device, catch cotton device and be communicated with induced draft fan (14) by air draft pipe.
3. liquid blast furnace slag granulation according to claim 2 and multiple-roll residual neat recovering system; it is characterized in that: between described water source and service pump, water pipe is provided with softening water tank (12), every section of water pipe in described residual neat recovering system arranges a water valve respectively.
4. liquid blast furnace slag granulation according to claim 3 and multiple-roll residual neat recovering system, is characterized in that: described in catch between cotton device and induced draft fan every section of air draft pipe on an air-valve is set respectively.
5. the liquid blast furnace slag granulation according to any one of claim 2 to 4 and multiple-roll residual neat recovering system, is characterized in that: described one-level vaporization drum granulation storehouse (5) comprises the preposition storehouse (51) be interconnected, middle storehouse (52) and rearmounted storehouse (53); Described liquid slag chute (3) and pelletizer (2) are all arranged on the opening for feed place in preposition storehouse, the rear end in preposition storehouse (51) adopts mechanical seal to be connected with the front end of Zhong Cang (52), the rear end in middle storehouse (52) adopts mechanical seal to be connected with the front end of rearmounted storehouse (53), and carbonated drink import and export is arranged on the distal center in rearmounted storehouse;
Described middle storehouse (52) is the rotatable tube structure adopting membrane type close arranging pipe arranged in series, and be provided with spiral conveying cooling tube (58) in the inner chamber of middle storehouse, the turnover water end (W.E.) of membrane type close arranging pipe is imported and exported respectively by pipeline communication carbonated drink.
6. liquid blast furnace slag granulation according to claim 5 and multiple-roll residual neat recovering system, is characterized in that: the posterior segment of described middle storehouse inner chamber is also laid with material curtain abrasionproof and raises plate (57).
7. liquid blast furnace slag granulation according to claim 5 and multiple-roll residual neat recovering system; it is characterized in that: the cross section in described middle storehouse is circular or Polygons, and in cartridge type, the longitudinal section in storehouse is rectangle, the little olive shape broad in the middle in two or one large one small pyramidal structure.
8. liquid blast furnace slag granulation according to claim 5 and multiple-roll residual neat recovering system, is characterized in that: the top in described preposition storehouse and the top in rearmounted storehouse are respectively arranged with the quick coagulator for injecting device (59) towards preposition storehouse inner chamber and middle storehouse inner chamber.
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