CN208613051U - A kind of steel slag micro mist using steel plant's waste heat flue gas selects powder system - Google Patents

A kind of steel slag micro mist using steel plant's waste heat flue gas selects powder system Download PDF

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CN208613051U
CN208613051U CN201821194342.1U CN201821194342U CN208613051U CN 208613051 U CN208613051 U CN 208613051U CN 201821194342 U CN201821194342 U CN 201821194342U CN 208613051 U CN208613051 U CN 208613051U
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waste heat
gas
flue gas
outlet
heat flue
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李勋
杨勇
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Zhengzhou Voight Energy Saving Polytron Technologies Inc
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Zhengzhou Voight Energy Saving Polytron Technologies Inc
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Abstract

The utility model discloses a kind of steel slag micro mists using steel plant's waste heat flue gas to select powder system, including waste heat flue gas gas source, residual heat flue mechanism, waste heat flue gas booster body, gas source, compensation combustion type hot-blast stove, static powder separating machine, feeding mechanism, coarse fodder stocking mechanism, cyclone cylinder, dedusting mechanism, fines stocking mechanism and exhaust gear;Waste heat flue gas in waste heat flue gas gas source enters compensation combustion type hot-blast stove using waste heat flue gas booster body and is heated according to residual heat flue mechanism is entered;Compensation combustion type hot-blast stove enters static powder separating machine, coarse fodder in static powder separating machine stores coarse fodder stocking mechanism again, fines is stored in fines stocking mechanism after cyclone cylinder Conveyance, the outlet air of cyclone cylinder is filtered through dedusting mechanism and is discharged, it is heated using the waste heat flue gas of steel plant's waste heat as the hot wind in hot-blast stove, not only the recycling of the waste heat flue gas of steel plant's waste heat had been realized, but also has greatly reduced the fuel cost in hot-blast stove.

Description

A kind of steel slag micro mist using steel plant's waste heat flue gas selects powder system
Technical field
The utility model relates to steel slag micro mist manufacturing technology fields more particularly to a kind of using steel plant's waste heat flue gas Steel slag micro mist selects powder system.
Background technique
Currently, steel slag and slag are steel industry discharge amount maximum metallurgical slags, according to relevant iron-making and steel-making technique, steel slag Quantum of output be crude steel yield 12-15%, slag is the 25%-35% of crude steel yield.Have after the slag water quenching that blast furnace process generates There is very big activity, after being fabricated to micro mist, as the admixture of cement mixture and mixed mud, comprehensive utilization ratio is up to 90% or more. The steel slag generated is made steel since there are the calcium oxide of free state and magnesia, causes stability bad, utilization rate is less than 20%.Mesh One, the preceding steel slag application with good prospect is that steel slag tailings production that is heat is stewing and being crushed after selecting iron becomes specific surface area The slag micro powder of 400m2/kg.Become double-doped powder after above-mentioned slag micro powder and slag micropowder are mixed according to a certain percentage, as The substitute of clinker.Current this application method graduallys mature.
As patent 201621266637.6 produces using slag micro powder and slag micropowder mention in the equipment of double-doped powder one Sample needs to use hot-blast stove in the production process of slag micropowder or slag micro powder, the purpose is to material dried with Meet subsequent technique requirement.Hot-blast stove used at present is all to enter heating furnace burning, furnace outlet temperature using normal temperature air Degree is usually at 300-400 DEG C according to process requirement.It is usually used in hot-blast stove for heating the fuel of normal temperature air at present The surplus gas of steel mill.General steel mill's blast furnace gas more than needed is calculated according to the electricity price of power generation, the valence of blast furnace gas for generating electricity Lattice are about 0.2 yuan/Nm3, and calculating to the blast furnace gas consumption of micro mist per ton is about 70-100Nm3/ tons, then fuel per ton at This is 14-20 yuan/ton, and the fuel cost in hot-blast stove accounts between the 30-40% of totle drilling cost.
There are many waste heat flue gases in another aspect steel plant, for example at least there are several types of waste heats: 1) row of blast funnace hot blast stove Smoke temperature degree is between 120-160 DEG C;2) the cold third section exhaust of the ring of sintering process is also at 150-230 DEG C or more;3) steel rolling is heated Furnace exhaust gas temperature is also at 150 DEG C or more;4) for the exhaust gas temperature of gas fired-boiler also at 140 degrees Celsius or more.Existing technology In, the waste heat direct emission generated in these steel plant's distinct devices, technique causes the very big wasting of resources.
Utility model content
The purpose of the utility model is to provide a kind of steel slag micro mists using steel plant's waste heat flue gas to select powder system, can It makes full use of the waste heat flue gas of steel plant's waste heat to be heated for the hot wind in hot-blast stove, realizes the waste heat cigarette of steel plant's waste heat The recycling of gas, and greatly reduce the fuel cost in hot-blast stove.
The technical solution adopted in the utility model are as follows:
A kind of steel slag micro mist using steel plant's waste heat flue gas selects powder system, including waste heat flue gas gas source, residual heat flue Mechanism, waste heat flue gas booster body, gas source, compensation combustion type hot-blast stove, static powder separating machine, feeding mechanism, coarse fodder stocking mechanism, Cyclone cylinder, dedusting mechanism, fines stocking mechanism and exhaust gear;
The waste heat gas inlet of the waste heat exhanst gas outlet connection residual heat flue mechanism of the waste heat flue gas gas source, waste heat cigarette The waste heat exhanst gas outlet of road mechanism connects the waste heat gas inlet of waste heat flue gas booster body by waste heat smoke regulating valve, described Waste heat flue gas booster body waste heat exhanst gas outlet by combustion-supporting smoke regulating valve connect compensation combustion type hot-blast stove combustion-supporting flue gas Import, and the waste heat exhanst gas outlet of waste heat flue gas booster body connects the air distribution of compensation combustion type hot-blast stove by air distribution smoke regulating valve Gas inlet;The gas exit of gas source connects the gas inlet of compensation combustion type hot-blast stove by gas regulator;
The static powder separating machine air inlet connection compensation combustion type hot-blast stove air outlet, the static powder separating machine into Material mouth connects feeding mechanism, the coarse fodder outlet connection coarse fodder stocking mechanism of static powder separating machine, and the fine material outlet of static powder separating machine connects The feed inlet of cyclone cylinder is connect, the hot wind inlet of cyclone cylinder connects the outlet air of compensation combustion type hot-blast stove by cyclone cylinder hot wind regulating valve Mouthful, the discharge port of cyclone cylinder connects fines stocking mechanism;The air outlet of the air inlet connection cyclone cylinder of dedusting mechanism, dedusting mechanism Clout outlet connection fines stocking mechanism, the exhaust outlet of dedusting mechanism passes through exhaust regulating valve connection exhaust gear, dust removal machine The waste heat flue gas reuse outlet of structure connects the waste heat flue gas reuse import of compensation combustion type hot-blast stove by waste heat flue gas reuse regulating valve.
The dedusting mechanism includes bag-type dust machine and dedusting fan, and the air inlet of the bag-type dust machine connects rotation The clout outlet connection fines stocking mechanism of the air outlet bag-type dust machine of air duct, the gas vent of bag-type dust machine connect dedusting The exhaust outlet of the gas feed of blower, dedusting fan connects exhaust gear, the waste heat flue gas of dedusting fan by exhaust regulating valve Reuse outlet connects the waste heat flue gas reuse import of compensation combustion type hot-blast stove by waste heat flue gas reuse regulating valve.
It further includes temperature monitoring mechanism that the steel slag micro mist using steel plant's waste heat flue gas, which selects powder system, described Temperature monitoring mechanism includes temperature sensor, analog-to-digital conversion module, microprocessor and display module;The temperature sensor is set It is placed in the gas vent of bag-type dust machine;The temperature signal output end of the temperature sensor connects the defeated of analog-to-digital conversion module Enter end, the input terminal of the output end connection microprocessor of analog-to-digital conversion module, the output end of microprocessor connects display module Input terminal.
The waste heat flue gas gas source includes that the first pressure charging system and the first regulating valve, the second pressure charging system and second are adjusted Valve, third pressure charging system and third regulating valve, the 4th pressure charging system and the 4th regulating valve;The waste heat of first pressure charging system Gas inlet by the first regulating valve connect blast funnace hot blast stove exhanst gas outlet, the first pressure charging system waste heat exhanst gas outlet connection more than First waste heat gas inlet of heating flue mechanism;The waste heat gas inlet of second pressure charging system is connected by the second regulating valve Sintering circular-cooler third section exhanst gas outlet is connect, the waste heat exhanst gas outlet of the second pressure charging system connects more than the second of residual heat flue mechanism Hot fume import;The waste heat gas inlet of the third pressure charging system connects heater for rolling steel flue gas by third regulating valve and goes out Mouthful, the third waste heat gas inlet of the waste heat exhanst gas outlet connection residual heat flue mechanism of third pressure charging system;Described the 4th increases The waste heat gas inlet of pressure system connects the exhanst gas outlet of gas fired-boiler smoke evacuation system, the 4th pressure charging system by the 4th regulating valve Waste heat exhanst gas outlet connection residual heat flue mechanism the 4th waste heat gas inlet.
The hot-blast stove includes heat accumulation room, multiple heat storages, multiple burners, multiple burners fixed setting In on heat accumulation chamber enclosure, and multiple burners are successively arranged from top to bottom;Each burner include combustion-supporting flue gas into Mouth and gas inlet, and the waste heat exhanst gas outlet of the combustion-supporting gas inlet connection waste heat flue gas booster body of burner, burner Gas inlet connection gas source gas exit, the hot-blast outlet of burner is connected to heat accumulation room;Multiple accumulation of heats Between body is top-down to be fixedly installed on heat accumulation chamber interior, and each heat storage respectively corresponds between a pair of of adjacent burners Every;Air distribution flue gas extension tube attached is further fixedly arranged on the heat accumulation room, the entrance of the air distribution flue gas extension tube attached is air distribution The outlet of gas inlet, air distribution flue gas extension tube attached is connected to heat accumulation room.
The air distribution flue gas extension tube attached is obliquely installed, and the oblique burner side of air distribution gas inlet of air distribution flue gas extension tube attached To the center line of air distribution flue gas extension tube attached and the angle of heat accumulation room center line are less than or equal to 45o
The number of the air distribution flue gas extension tube attached is multiple.
A kind of steel slag micro mist using steel plant's waste heat flue gas of providing of the utility model selects powder system, can be abundant Using the waste heat flue gas of steel plant's waste heat, the waste heat flue gas in steel plant everywhere is converged in residual heat flue mechanism, is entered back into It is heated to be high-temperature hot-air in hot-blast stove, realizes the recycling of the waste heat flue gas of steel plant's waste heat, and waste heat flue-gas temperature sheet Body is much higher than normal temperature air, therefore greatly reduces the fuel cost in hot-blast stove.
Further, by the way that burner is successively arranged from top to bottom, the leveled heating of hot wind in hot-blast stove is realized, is made It obtains gas-fired in hot-blast stove to stablize, hot-wind heated is uniform, and heating speed is fast, the heat for avoiding burner combustion coal gas from obtaining Loss, has saved resource.
Detailed description of the invention
Fig. 1 is the structural scheme of mechanism of the utility model;
Fig. 2 is the waste heat flue gas air source structure schematic diagram of the utility model;
Fig. 3 is the compensation combustion type hot-blast stove structural schematic diagram of the utility model.
Specific embodiment
As shown in Figure 1, a kind of steel slag micro mist using steel plant's waste heat flue gas selects powder system, the waste heat including steel plant Flue gas gas source 22, the residual heat flue mechanism 1 for converging steel plant's many places waste heat flue gas, waste heat flue gas booster body 3, coal gas gas Source 2, compensation combustion type hot-blast stove 4, static powder separating machine 5, feeding mechanism 6, coarse fodder stocking mechanism 8, cyclone cylinder 7, dedusting mechanism, fines storage Deposit mechanism 11 and exhaust gear 12;
The dedusting mechanism includes bag-type dust machine 9 and dedusting fan 10, and the gas vent connection of bag-type dust machine 9 removes The gas feed of dirt blower 10, bag-type dust machine 9 and dedusting fan 10 form two-stage dedusting mechanism, are further reduced in exhaust gas Particulate matter prevents Particulate Pollution environment.
The waste heat gas inlet of the waste heat exhanst gas outlet connection residual heat flue mechanism 1 of the waste heat flue gas gas source 22, it is remaining The waste heat exhanst gas outlet of heating flue mechanism 1 passes through the waste heat flue gas of waste heat smoke regulating valve V1 connection waste heat flue gas booster body 3 The waste heat exhanst gas outlet of import, the waste heat flue gas booster body 3 passes through combustion-supporting smoke regulating valve V3 connection compensation combustion type hot wind The combustion-supporting gas inlet of furnace 4, and the waste heat exhanst gas outlet of waste heat flue gas booster body 3 is mended by air distribution smoke regulating valve V2 connection The air distribution gas inlet of burning type hot-air furnace 4;The gas exit of gas source 2 passes through gas regulator V7 connection compensation combustion type hot-blast stove 4 gas inlet;
The air outlet of the air inlet connection compensation combustion type hot-blast stove 4 of the static powder separating machine 5, the static powder separating machine 5 Feed inlet connect feeding mechanism 6, static powder separating machine 5 coarse fodder outlet connection coarse fodder stocking mechanism 8, static powder separating machine 5 it is thin The hot wind inlet of the feed inlet of material outlet connection cyclone cylinder 7, cyclone cylinder 7 passes through cyclone cylinder hot wind regulating valve V4 connection compensation combustion type heat The discharge port of the air outlet of wind furnace 4, cyclone cylinder 7 connects fines stocking mechanism 11;The air inlet of bag-type dust machine 9 connects cyclone cylinder 7 air outlet, the clout outlet connection fines stocking mechanism 11 of bag-type dust machine 9, the exhaust outlet of dedusting fan 10 pass through exhaust The waste heat flue gas reuse outlet of regulating valve V6 connection exhaust gear 12, dedusting fan 10 is connected by waste heat flue gas reuse regulating valve V5 Connect the waste heat flue gas reuse import of compensation combustion type hot-blast stove 4.
As shown in Fig. 2, the waste heat flue gas in the waste heat flue gas gas source 22 mostlys come from steel plant in the present embodiment It is discharged in this four equipment of middle blast funnace hot blast stove 13, sintering circular-cooler third section 15, heater for rolling steel 17 and gas fired-boiler 18 Waste heat flue gas.The waste heat flue gas gas source 22 includes the first pressure charging system 14 and the first regulating valve V8, the second pressure charging system 16 With the second regulating valve V9, third pressure charging system 17 and third regulating valve V10, the 4th pressure charging system 20 and the 4th regulating valve V11;Institute The waste heat gas inlet for the first pressure charging system 14 stated is by 13 exhanst gas outlet of the first regulating valve V8 connection blast funnace hot blast stove, and first First waste heat gas inlet of the waste heat exhanst gas outlet connection residual heat flue mechanism 1 of pressure charging system 14;The second pressurization system The waste heat gas inlet of system 16 passes through 15 exhanst gas outlet of the second regulating valve V9 connection sintering circular-cooler third section, the second pressure charging system Second waste heat gas inlet of 16 waste heat exhanst gas outlet connection residual heat flue mechanism 1;The third pressure charging system 17 it is remaining Hot fume import passes through 17 exhanst gas outlet of third regulating valve V10 connection heater for rolling steel, the waste heat flue gas of third pressure charging system 17 The third waste heat gas inlet of outlet connection residual heat flue mechanism 1;The waste heat gas inlet of 4th pressure charging system 20 is logical Cross the exhanst gas outlet of 18 smoke evacuation system of the 4th regulating valve V11 connection gas fired-boiler, the waste heat exhanst gas outlet of the 4th pressure charging system 20 Connect the 4th waste heat gas inlet of residual heat flue mechanism 1.According to blast funnace hot blast stove 13, sintering circular-cooler third section in steel plant 15, the operating condition of heater for rolling steel 17 and gas fired-boiler 18 adjusts first regulating valve V8 corresponding with equipment, the second regulating valve V9, third regulating valve V10 and the 4th regulating valve V11 are adjusted and select to the waste heat flue gas entered in residual heat flue mechanism 1 It selects.
The operation principle and process of the utility model is as follows: distinct device in steel plant, the waste heat flue gas generated in technique Direct emission causes the wasting of resources of thermal energy carried in flue gas, and steel plant produce the hot wind of steel slag micro mist important equipment Furnace, and need the air of room temperature being heated to 300-400 DEG C.
In steel plant blast funnace hot blast stove 13, sintering circular-cooler third section 15, heater for rolling steel 17 and gas fired-boiler 18 this four The waste heat flue gas being discharged in a equipment respectively enters in residual heat flue mechanism 1, and mixing, and different temperatures are collected in residual heat flue Waste heat flue gas exchange heat, open subsequent waste heat flue gas enter waste heat flue gas booster body 3 pressurization, waste heat flue gas booster body 3 guarantee waste heat flue gases can overcome the resistance in entire steel slag micro mist production system, successfully complete flue gas recirculation or discharge.
After the pressurization of waste heat flue gas booster body 3, waste heat flue gas a part in waste heat flue gas booster body 3 is as to be added The hot-air of heat, is entered in hot-blast stove by the air distribution gas inlet of the self-complementary burning type hot-air furnace 4 of pipeline;Waste heat flue gas booster body Waste heat flue gas another part in 3 enters hot wind by the combustion-supporting gas inlet of the self-complementary burning type hot-air furnace 4 of pipeline as combustion air In furnace;Due to waste heat flue gas
Self-temperature is higher, therefore, the combustion-supporting smoke pre-heating the step in, saved the energy, simplified hot-blast stove dress It sets, while also assuring hot blast temperature and efficient burning.
Coal gas in gas source 2, which enters in hot-blast stove, to burn, and further heating enters the waste heat flue gas in hot-blast stove.Add The hot wind of heat to suitable temperature enters in static powder separating machine 5.Feeding mechanism 6 specifically includes raw material stocking mechanism and raw material conveyance Structure is the mixing iron and steel slag micro mist of roller press grinding system production in raw material stocking mechanism.Raw material transshipment acitivity is by mixing iron and steel Into static powder separating machine 5, steel slag micro powder screen is selected as coarse fodder steel slag micro mist and fines by static powder separating machine 5 for the transport of slag micro mist Steel slag micro mist, fines steel slag micro mist is directly from the outlet of the coarse fodder of static powder separating machine 5 enters in coarse fodder stocking mechanism 8 and stores Come, in actual production, the coarse fodder stored in coarse fodder stocking mechanism 8 is added into roller press grinding system again wears into micro mist, real Existing steel slag resource makes full use of.
Fines steel slag micro mist then enters cyclone cylinder 7, fines steel slag micro mist and heat from the fine material outlet of static powder separating machine 5 Wind separation, the discharge port of fines steel slag micro mist from cyclone cylinder 7 enter fines stocking mechanism 11 and store.
High-temperature hot-air in hot-blast stove enters cyclone cylinder 7, in the mistake that cyclone cylinder 7 separates fines steel slag micro mist with hot wind Cheng Zhong adjusts the high-temperature hot-air being directly entered in cyclone cylinder 7 in self-heating wind furnace by adjusting cyclone cylinder hot wind regulating valve V4 Amount increases the aperture of cyclone cylinder hot wind regulating valve V4, is directly entered rotation in self-heating wind furnace if fines steel slag micro mist humidity is high The amount of high-temperature hot-air in air duct 7 increases, and takes away more vapor, reduces fines steel slag micro mist humidity.Conversely, if fines Steel slag micro mist humidity is low, then reduces the aperture of cyclone cylinder hot wind regulating valve V4, be directly entered in cyclone cylinder 7 in self-heating wind furnace The amount of high-temperature hot-air is reduced, and is taken away vapor and is just reduced, and guarantees that fines steel slag micro mist humidity meets the requirements.
Fines steel slag micro mist is separated with hot wind in cyclone cylinder 7, it is still micro- with a small amount of fines steel slag in hot wind Therefore dedusting mechanism is arranged in the air outlet of cyclone cylinder 7, the fines steel slag in the hot wind that further cyclone cylinder 7 is discharged in powder Micro mist is filtered and is collected, and the fines steel slag micro mist of collection enters in fines stocking mechanism 11 from the clout outlet of dedusting mechanism to be stored up It deposits, to guarantee that fines steel slag micro mist is not wasted, is also prevented from micro- containing fines steel slag in the hot wind being discharged by cyclone cylinder 7 Powder causes environmental pollution.
By the exhaust gas that dedusting mechanism is discharged, still contains heat, therefore, a part of exhaust gas is connected to the benefit of air-heater The waste heat flue gas reuse import of burning type hot-air furnace 4 is back in hot-blast stove, and waste gas circulation is utilized, further saves energy, separately It is a part of then be discharged from exhaust gear 12.The aperture of waste heat flue gas reuse regulating valve V5 and exhaust regulating valve V6 are adjusted respectively, The ratio for neutralizing the exhaust gas entered in exhaust gear 12 into hot-blast stove can be adjusted according to the actual situation, guarantee the conjunction of waste heat flue gas Manage reuse.
A kind of steel slag micro mist using steel plant's waste heat flue gas of providing of the utility model selects powder system, can be abundant Using the waste heat flue gas of steel plant's waste heat, the waste heat flue gas in steel plant everywhere is converged in residual heat flue mechanism 1, is entered back into It is heated to be high-temperature hot-air in hot-blast stove, realizes the recycling of the waste heat flue gas of steel plant's waste heat, and waste heat flue-gas temperature sheet Body is much higher than normal temperature air, therefore greatly reduces the fuel cost in hot-blast stove.
The steel slag micro mist using steel plant's waste heat flue gas selects powder system, further includes temperature monitoring mechanism, described Temperature monitoring mechanism include temperature sensor, analog-to-digital conversion module, microprocessor and display module;The temperature sensor It is set to the gas vent of bag-type dust machine 9, acquires the temperature signal in 9 exit of bag-type dust machine;The temperature sensor Temperature signal output end connection analog-to-digital conversion module input terminal, by temperature sensor acquire temperature signal be converted to number Value, the input terminal of the output end connection microprocessor of analog-to-digital conversion module, the temperature signal that temperature sensor acquires is divided Analysis combing, the input terminal of the output end connection display module of microprocessor, after microprocessor analysis is handled, in disappearance module The gas temperature of 9 temperature point of real-time display bag-type dust machine.The microprocessor is single-chip microcontroller, and the display module is Charactron.
According to the gas temperature of 9 temperature point of bag-type dust machine, air distribution smoke regulating valve V2 and gas regulator V7 is adjusted Aperture, guarantee hot-blast stove discharge hot blast temperature meet the requirements.
As shown in figure 3, the steel slag micro mist using steel plant's waste heat flue gas selects powder system, the hot-blast stove packet Heat accumulation room 24, multiple heat storages 25, multiple burners 23 are included, multiple burners 23 are fixedly installed on 24 shell of heat accumulation room On, and multiple burners 23 are successively arranged from top to bottom, so that 4 stratified combustion of compensation combustion type hot-blast stove, by what need to be heated Waste heat flue gas breaks the whole up into parts, avoid because flue gas volume it is excessive caused by conduct heat slow, the even problem of uneven heating, guarantee compensation combustion type heat Wind furnace flameholding improves the heating efficiency of waste heat flue gas;In the present embodiment, the burner 23 is all set in heat accumulation room Left side.
Each burner 23 includes combustion-supporting gas inlet 23-1 and gas inlet 23-2, and the combustion-supporting flue gas of burner 23 The waste heat exhanst gas outlet of import 23-1 connection waste heat flue gas booster body 3, the gas inlet 23-2 connection coal gas gas of burner 23 The hot-blast outlet of the gas exit in source 2, burner 23 is connected to heat accumulation room 24;Multiple heat storages 25 are top-down solid Surely it is set to inside heat accumulation room 24, and each heat storage 25 respectively corresponds the interval between a pair of of adjacent burners 23, guarantees combustion 23 flameholding of burner;Air distribution flue gas extension tube attached 26 is further fixedly arranged on the heat accumulation room 24, outside the air distribution flue gas The entrance of adapter tube 26 is air distribution gas inlet, and the outlet of air distribution flue gas extension tube attached 26 is connected to heat accumulation room 24.The pressurization of waste heat flue gas The pressurized waste heat flue gas air self-distribution flue gas extension tube attached 26 of mechanism 3 enters in hot-blast stove by leveled heating.
The steel slag micro mist using steel plant's waste heat flue gas selects powder system, and the air distribution flue gas extension tube attached 26 tilts Setting, and the air distribution flue gas extension tube attached 26 is tilted to the left, the outlet and 24 right part of heat accumulation room of air distribution flue gas extension tube attached 26 Connection, and the angle of the center line of the air distribution flue gas extension tube attached 26 and 24 center line of heat accumulation room is less than or equal to 45o, thus Guarantee the flue gas entered in compensation combustion type hot-blast stove 4 far from burner 23, the waste heat flue gas avoided enter into compensation combustion type hot-blast stove 4 is dry The burning of burner 23 is disturbed, the stability that burner 23 burns is reduced.
The steel slag micro mist using steel plant's waste heat flue gas selects air distribution flue gas extension tube attached 26 described in powder system Number be it is multiple, the waste heat flue gas air intake efficiency in compensation combustion type hot-blast stove 4 is improved, to guarantee the heat that burner 23 distributes It is fully utilized.

Claims (7)

1. a kind of steel slag micro mist using steel plant's waste heat flue gas selects powder system, it is characterised in that: including waste heat flue gas gas source, Residual heat flue mechanism, waste heat flue gas booster body, gas source, compensation combustion type hot-blast stove, static powder separating machine, feeding mechanism, coarse fodder Stocking mechanism, cyclone cylinder, dedusting mechanism, fines stocking mechanism and exhaust gear;
The waste heat gas inlet of the waste heat exhanst gas outlet connection residual heat flue mechanism of the waste heat flue gas gas source, residual heat flue machine The waste heat exhanst gas outlet of structure connects the waste heat gas inlet of waste heat flue gas booster body by waste heat smoke regulating valve, and described is remaining The waste heat exhanst gas outlet of hot fume booster body connects the combustion-supporting gas inlet of compensation combustion type hot-blast stove by combustion-supporting smoke regulating valve, And the waste heat exhanst gas outlet of waste heat flue gas booster body connects the air distribution flue gas of compensation combustion type hot-blast stove by air distribution smoke regulating valve Import;The gas exit of gas source connects the gas inlet of compensation combustion type hot-blast stove by gas regulator;
The air outlet of the air inlet connection compensation combustion type hot-blast stove of the static powder separating machine, the feed inlet of the static powder separating machine Feeding mechanism, the coarse fodder outlet connection coarse fodder stocking mechanism of static powder separating machine are connected, the fine material outlet of static powder separating machine connects rotation The feed inlet of air duct, the hot wind inlet of cyclone cylinder connect the air outlet of compensation combustion type hot-blast stove by cyclone cylinder hot wind regulating valve, rotation The discharge port of air duct connects fines stocking mechanism;Dedusting mechanism air inlet connection cyclone cylinder air outlet, dedusting mechanism it is remaining Material outlet connection fines stocking mechanism, the exhaust outlet of dedusting mechanism connect exhaust gear by exhaust regulating valve, dedusting mechanism Waste heat flue gas reuse outlet connects the waste heat flue gas reuse import of compensation combustion type hot-blast stove by waste heat flue gas reuse regulating valve.
2. the steel slag micro mist according to claim 1 using steel plant's waste heat flue gas selects powder system, it is characterised in that: institute The dedusting mechanism stated includes bag-type dust machine and dedusting fan, the outlet air of the air inlet connection cyclone cylinder of the bag-type dust machine The clout outlet connection fines stocking mechanism of mouth bag-type dust machine, the gas of the gas vent connection dedusting fan of bag-type dust machine The exhaust outlet of import, dedusting fan connects exhaust gear by exhaust regulating valve, and the waste heat flue gas reuse outlet of dedusting fan is logical Excess enthalpy thermal flue gas back connects the waste heat flue gas reuse import of compensation combustion type hot-blast stove with regulating valve.
3. the steel slag micro mist according to claim 2 using steel plant's waste heat flue gas selects powder system, it is characterised in that: also Including temperature monitoring mechanism, the temperature monitoring mechanism includes temperature sensor, analog-to-digital conversion module, microprocessor and display Module;The temperature sensor is set to the gas vent of bag-type dust machine;The temperature signal of the temperature sensor is defeated Outlet connects the input terminal of analog-to-digital conversion module, the input terminal of the output end connection microprocessor of analog-to-digital conversion module, micro process The input terminal of the output end connection display module of device.
4. the steel slag micro mist according to claim 1 using steel plant's waste heat flue gas selects powder system, it is characterised in that: institute The waste heat flue gas gas source stated includes that the first pressure charging system and the first regulating valve, the second pressure charging system and the second regulating valve, third increase Pressure system and third regulating valve, the 4th pressure charging system and the 4th regulating valve;The waste heat gas inlet of first pressure charging system Blast funnace hot blast stove exhanst gas outlet is connected by the first regulating valve, the waste heat exhanst gas outlet of the first pressure charging system connects residual heat flue machine First waste heat gas inlet of structure;The waste heat gas inlet of second pressure charging system connects sintered ring by the second regulating valve Cold third section exhanst gas outlet, the second pressure charging system waste heat exhanst gas outlet connection residual heat flue mechanism the second waste heat flue gas into Mouthful;The waste heat gas inlet of the third pressure charging system connects heater for rolling steel exhanst gas outlet, third by third regulating valve The third waste heat gas inlet of the waste heat exhanst gas outlet connection residual heat flue mechanism of pressure charging system;4th pressure charging system Waste heat gas inlet connects the exhanst gas outlet of gas fired-boiler smoke evacuation system, the waste heat cigarette of the 4th pressure charging system by the 4th regulating valve 4th waste heat gas inlet of gas outlet connection residual heat flue mechanism.
5. the steel slag micro mist according to claim 1 using steel plant's waste heat flue gas selects powder system, it is characterised in that: institute The hot-blast stove stated includes heat accumulation room, multiple heat storages, multiple burners, and multiple burners are fixedly installed on outside heat accumulation room On shell, and multiple burners are successively arranged from top to bottom;Each burner include combustion-supporting gas inlet and coal gas into Mouthful, and the waste heat exhanst gas outlet of the combustion-supporting gas inlet connection waste heat flue gas booster body of burner, the gas inlet of burner The gas exit of gas source is connected, the hot-blast outlet of burner is connected to heat accumulation room;Multiple heat storages are from top to bottom Be fixedly installed on heat accumulation chamber interior, and each heat storage respectively corresponds the interval between a pair of of adjacent burners;The storage Air distribution flue gas extension tube attached is further fixedly arranged on hot cell, the entrance of the air distribution flue gas extension tube attached is air distribution gas inlet, is matched The outlet of wind and smoke gas extension tube attached is connected to heat accumulation room.
6. the steel slag micro mist according to claim 5 using steel plant's waste heat flue gas selects powder system, it is characterised in that: institute It states air distribution flue gas extension tube attached to be obliquely installed, and the oblique burner direction of air distribution gas inlet of air distribution flue gas extension tube attached, matches wind and smoke The center line of gas extension tube attached and the angle of heat accumulation room center line are less than or equal to 45o
7. the steel slag micro mist according to claim 6 using steel plant's waste heat flue gas selects powder system, it is characterised in that: institute The number for the air distribution flue gas extension tube attached stated is multiple.
CN201821194342.1U 2018-07-26 2018-07-26 A kind of steel slag micro mist using steel plant's waste heat flue gas selects powder system Active CN208613051U (en)

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