CN206160079U - Fine material suspension magnetizing roasting powder rapid cooling cooling technology exhaust -heat boiler - Google Patents
Fine material suspension magnetizing roasting powder rapid cooling cooling technology exhaust -heat boiler Download PDFInfo
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- CN206160079U CN206160079U CN201621221868.5U CN201621221868U CN206160079U CN 206160079 U CN206160079 U CN 206160079U CN 201621221868 U CN201621221868 U CN 201621221868U CN 206160079 U CN206160079 U CN 206160079U
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Abstract
The utility model relates to a fine material suspension magnetizing roasting powder rapid cooling cooling technology exhaust -heat boiler mainly includes leading evaporimeter, flapper I, suspension bed evaporimeter, cyclone, flapper II, fluidized bed heat exchanger, fluidizing air device II, steam pocket, oxygen -eliminating device, charge device and drainage. Fine material suspension magnetizing roasting powder is through the cooling process of leading evaporimeter, suspension bed evaporimeter and fluidized bed heat exchanger syllogic cooling technology effective control powder and the cooling technology that the realization powder did not lose magnetism among the metallurgical process. Not only can effectively utilize the waste heat in the powder, reduce enterprise's production energy consumption and manufacturing cost, mainly satisfy metallurgical ore -dressing technique moreover and require with energy -conservation, lower consumption, have considerable economic value and social.
Description
Technical field
The utility model belongs to metallurgical, field of energy-saving technology, and in particular to a kind of fine ore of iron ore in metallurgical technology
Suspending magnetization roasting powder chilling temperature reduction technology waste heat boiler.
Background technology
China is the country of an iron ore deposit wretched insufficiency, and iron ore reserves more than half belong to difficulty and select iron oxide ore
Stone, for these mineral products of rational exploitation, employs the ore-dressing technique of various complexity, wherein, the choosing of fine ore suspending magnetization roasting powder
Miner's skill belongs to most economical, optimized scheme, selects the ore dressing of ferric oxide ore more to embody iron ore concentrate product especially for difficulty
The features such as taste is high, energy consumption is low, resource utilization is high.
In recent years, as energy-saving powder ore dressing metallurgical technology is widely used in metallurgical industry field, in production process first
High-temperature roasting is carried out to a large amount of superfine powders, make ferric oxide ore（2Fe2O3·3H2O）Taken off under high temperature oxidizing conditions
Water, oxidation, the ferric oxide ore when sintering temperature reaches 300-400 DEG C（2Fe2O3·3H2O）Start to remove the crystallization water, reach
Crystallization water removing when 600 DEG C is finished, ferric oxide ore（2Fe2O3·3H2O）It is changed into bloodstone（Fe2O3）.Bloodstone（Fe2O3）
Magnetic iron ore is reduced under weakly reducing atmosphere when 570 DEG C（Fe3O4）.Only magnetic iron ore（Fe3O4）Can be with selected iron essence by magnetic separation
Ore deposit, can substantially reduce smelting energy consumption and cost.But magnetic separation process is carried out at low temperature, and 570 DEG C of high temperature magnetic iron ore
（Fe3O4）Magnetic separation temperature could be reached when need to cool to 400 DEG C or so with air contact cooling.Because magnetic iron ore in pyroprocess
（Fe3O4）The bloodstone of loss of excitation can be oxidized to again in an oxidizing environment（Fe2O3）, roasting process above wastes the energy.Cause
This, needs the high temperature magnetic iron ore to 570 DEG C（Fe3O4）When under anaerobic chilling cools to 400 DEG C or so could not loss of excitation,
Meet the requirement of subsequent handling.Its concrete reaction equation is as follows：
2Fe2O3·3H2O→2Fe2O3+3H2O （The ferric oxide ore when sintering temperature reaches 300-400 DEG C（2Fe2O3·
3H2O）Crystallization water removing when starting the removing crystallization water, reaching 600 DEG C is finished, ferric oxide ore（2Fe2O3·3H2O）It is changed into red
Iron ore（Fe2O3））
3Fe2O3+C→2Fe3O4+ C O↑
3Fe2O3+ CO→2Fe3O4+ CO2↑（Iron ore（Fe2O3）Magnetic iron ore is reduced under weakly reducing atmosphere when 570 DEG C
（Fe3O4））
Traditional type of cooling is usually water jacket cooling, and the hot water of this mode output is not efficiently utilized, very
To generation secondary pollution.Also have and the high temperature inert gas containing superfine powder are passed through into heat convection using after mixing with inert gas
The mode of heat is reclaimed, the used heat of high-quality is converted into inferior used heat and is used by this mode, causes using energy source
Efficiency is substantially reduced, and causes a large amount of wastes of the energy, meanwhile, the cost of a large amount of inert gases is also very expensive, in addition, containing ultra-fine
The abrasion of the high temperature inert gas heat exchanging equipment of powder causes greatly the heat transmission equipment life-span to shorten significantly very much.Even if using tubulation
Carry out high temperature inert gas carries out heat exchange with water or other media, and due to the low reason of heat exchanger effectiveness, heat exchange area is very
Greatly, technique, equipment are all more complicated, invest larger, are unfavorable for commercial introduction.
And as the national strategy of development and the energy-saving and emission-reduction of modern industry is required, China's metallurgy industry must eliminate high energy
Consumption, old, the old technics of metallurgy mineral dressing of high pollution, technological equipment, fine ore suspending magnetization roasting ore-dressing technique will be rapidly developed, powder
The chilling cooling under oxygen free condition again of core technology in ore deposit suspending magnetization roasting Proccessing technology --- high temperature superfine powder
Technology application also will quickly be developed, and fine ore suspending magnetization roasting powder chilling temperature reduction technology waste heat boiler will be in metallurgical row
Industry is used widely and is promoted.
Utility model content
In order to overcome the above-mentioned deficiencies of the prior art, the utility model provides fine ore in a kind of metallurgical technology and suspends and magnetizes
Roasting powder quenching cooling waste heat boiler, is lowered the temperature using three-stage technique, and wherein the first order is that front-packed evaporator is lowered the temperature, this level
Lower the temperature as quenching cooling, the waste heat that this grade first cooling can not only be in effectively utilizes powder, reduce enterprise's energy consumption and
Production cost, and be the core process part of fine ore suspending magnetization roasting ore dressing --- 570 DEG C of high-temperature powder chilling is dropped
The magnetic iron ore of temperature to 400 DEG C of not losss of excitation（Fe3O4）, the 3rd, only with very small amount indifferent gas in high-temperature powder chilling temperature-fall period
Used as the power source for making powder fluidized of augmentation of heat transfer, greatly save increases body because chilling lowers the temperature the inert gas for needing
Production cost, belongs to technique core technology and energy-conservation, consumption reduction, with considerable economic worth and social benefit.
To realize object above, employ the following technical solutions：A kind of fine ore suspending magnetization roasting powder chilling temperature reduction technology
Waste heat boiler mainly includes that front-packed evaporator, flapper I, suspension bed evaporimeter, cyclone separator, flapper II, fluid bed are changed
Hot device, drum, oxygen-eliminating device, chemicals dosing plant and drainage.Front-packed evaporator is connected with suspension bed evaporimeter by flapper I,
Suspension bed evaporimeter is connected with cyclone separator, and cyclone separator is connected with fluid-bed heat exchanger by flapper II, whirlwind point
Also it is connected with hot-air channel from device, high temperature draught fan is connected between hot-air channel and roaster, by cyclone separator point
From hot-air send into roaster use for roasting；Suspension bed evaporimeter is connected with fluid-bed heat exchanger by fluidizing wind pipeline,
Front-packed evaporator, suspension bed evaporimeter and fluid-bed heat exchanger are connected to drainage by blow-off line respectively；Described vapour
Bag is connected respectively by tedge, down-comer with front-packed evaporator and suspension bed evaporimeter, and drum is connected to by dosing pump and is added
Medicine device, drum is connected to drainage by blow-off line, and drum is connected to fluid-bed heat exchanger by boiler feedwater pipeline；
Described oxygen-eliminating device is connected respectively by preheating waterpipe, boiler feedwater pipeline and desuperheat waterpipe with fluid-bed heat exchanger, is removed
Oxygen device is connected to drainage by low-pressure saturated steam pipeline.
Described drainage includes continuous blowdown expander, periodical blowdown expander and blowdown heat exchanger, continuous blowdown
Expander and periodical blowdown expander are connected respectively by blow-off line with blowdown heat exchanger.
Described front-packed evaporator includes distributing device, Natural Circulation evaporating heating surface, forced-circulation evaporation heating surface and stream
Wind transmission device I.
The air distribution structure of the described curved Venturi tube structure of suspension bed evaporimeter lower disposed " L ".
The chamber design of described suspension bed evaporimeter adopts all-sealed structure, whole burner hearth to be welded by seamless steel pipe and band steel
Help film water cold wall structure.
Some chambers are separated into by dividing plate inside described fluid-bed heat exchanger, except first chamber and last chamber
Low temperature superheater, high temperature superheater, evaporimeter I, evaporimeter II, high-temperature economizer, low-level (stack-gas) economizer and deoxygenation are sequentially arranged outward
Device heating surface, between the front end low temperature superheater and high temperature superheater connecting tube of fluid-bed heat exchanger attemperator, fluid bed are arranged
The bottom of heat exchanger arranges fluidisation wind apparatus II.
Described Natural Circulation evaporating heating surface and the heat exchanger tube of forced-circulation evaporation heating surface using being staggered in arrangement and
Front two rows heat exchanger tube has Antiwear casing.
Described fluidisation wind apparatus II（9-9）By roots blower（19）With air main（21）, main bellows（22）, distribution air-dry
Pipe（23）, regulating valve（24）, distribution bellows（25）, reallocation wind connecting leg（26）, cloth wind arm（27）, broadcast wind nozzle（28）Successively
Connect and compose.
Three-stage temperature reduction technology explanation：1）Front-packed evaporator powder temperature control can be realized by following three kinds of measures：
1. front-packed evaporator is divided into Natural Circulation convection heating surface and forced circulation convection heating surface, forced circulation convection heating surface side
It is connected with drum air space by tedge, opposite side is first connected with circulating pump, then is connected with drum hydrospace by down-comer,
Form closed loop.Circulating pump is fed back to according to front-packed evaporator outlet temperature signal, circulating pump is by changing recirculated water
Amount changes water side heat transfer coefficient, and so as to change powder side thermal discharge, powder temperature is adjusted；2. front-packed evaporator evaporation heating
Face lower disposed fluidized wind, fluidized wind adopts compressed inert, and according to front-packed evaporator outlet temperature signal compression is fed back to
Inert gas duct regulating valve, regulating valve changes powder state of disturbance by changing compressed inert amount, so as to change powder
Side thermal discharge, powder temperature is adjusted；3. take forced circulation to extract saturation water from boiler-steam dome to pump by hot water circuit
Enter forced-circulation evaporation heating surface to be exchanged heat with high-temperature powder, steam water interface sends boiler vapour back to by pipeline again after heat exchange
Bag.Below 1. 2. 3. three kinds of modes can be used in combination with reference to powder Jing monitorings front-packed evaporator outlet temperature, these three measures
The important measures method of powder cooling not loss of excitation is to ensure that, is also adjustable important measures.2）The purpose of suspension bed evaporimeter
It is by with powder, in suspension bed evaporimeter mass transfer mixed heat transfer to 405 DEG C or so, to go out cold air by suspension bed evaporimeter
The cyclone separator of mouth is separated, and the high temperature air isolated is sent into into roaster with energy-conservation.Suspension bed evaporimeter powder temperature control
System：Powder mixes rapidly, reacts with cold air in suspension bed evaporimeter bottom, and temperature is 405 DEG C or so after mixing, technological requirement
Suspension bed evaporator outlet temperature is 400 DEG C, and the heat exchange amount in suspension bed evaporimeter by suspension bed evaporimeter is less, substantial amounts of
Heat mixes with cold air, heating cold air.Suspension bed evaporimeter is made up of fin panel casing.Whole water-cooling wall surrounding is welded with
Wear-resistant castable furnace lining is laid in pin, building site when installing in this region, to mitigate the mill of air, powder mixture to water-cooling wall
Damage, meanwhile, wear-resistant castable furnace lining is applied to the size of suspension bed evaporator heat exchange area and can adjust powder in suspension bed steaming
Send out the thermal discharge in device, it is ensured that the temperature of technological requirement hot-air and the energy supply of follow-up equipment.3）Fluid-bed heat exchanger powder
Temperature is controlled：Reasonable Arrangement heating surface in fluid-bed heat exchanger, Temperature of Working is reduced step by step in heating surfaces at different levels, by fluidisation
The fluidized wind of bed heat exchanger inner bottom part arrangement causes powder in fluid-bed heat exchanger in flow regime, and powder is with the motion of " ∽ " type
Pass sequentially through high temperature superheater, low temperature superheater, evaporimeter I, evaporimeter II, high-temperature economizer, low-level (stack-gas) economizer and oxygen-eliminating device
Heating surface, most at last powder temperature drops to less than 80 DEG C and uses for ore concentrate.
The bottom of described fluid-bed heat exchanger arranges fluidisation wind apparatus II and provides hp fluid air using roots blower, high
Pressure fluidized wind sends into main bellows by air main, and main bellows both sides are equipped with many distribution and air-dry pipe, and air-dry pipe distributing per root
Upper installing control valve, for adjusting fluid-bed heat exchanger in each section of different air quantity and equipment go into operation startup when fluidized bed heat exchanger
Adjustment is closed down and started to each section of air quantity in device, with distribution air-dries pipe, the other end of regulating valve is connected is changed according to fluid bed
Multiple distribution bellows that each section uses in hot device air quantity is equipped with, distribute bellows according to fluid-bed heat exchanger structure both sides it is left,
It is right external, by being evenly arranged the distribution that branched distribution wind connecting leg connects arranged on left and right sides according to fluid-bed heat exchanger bottom area
Bellows, on per a distribution wind connecting leg according to the installing of fluid-bed heat exchanger bottom area it is multipair be in 90 ° or 60 ° angles the spray of cloth wind
Mouth, fluid-bed heat exchanger bottom surface is blowed to by cloth wind nozzle by the hp fluid air that roots blower is provided, by fluidized wind and stream
The bounce of heat exchanger of fluidized bed bottom surface enhances powder flowing and disturbance, flowing and disturbance of the powder in fluid-bed heat exchanger
Powder and the heat exchange of fluid-bed heat exchanger heating surface tube, realize the purpose of Waste Heat Recovery, while it is further to also achieve powder
The purpose of cooling.
The utility model beneficial effect：The utility model adopts the temperature-fall period of three-stage temperature reduction technology effective control powder,
Powder chilling cooling in the case of isolation air, will not make powder loss of excitation in front-packed evaporator；Powder in suspension bed evaporimeter
Mix rapidly with air, react, lower the temperature, effective control powder loss of excitation rate and needed for air needed for roasting is heated to
The condition of high temperature sends into roaster；In fluid-bed heat exchanger powder in the presence of fluidized wind in " ↑, ↓ " state disturbances, and with " ∽ "
Type forms of motion passes sequentially through heating surfaces at different levels, makes high-temperature powder be exchanged heat with heating surfaces at different levels, high-temperature powder Jing heat exchange drops
Overflowed by powder overfall after temperature cooling, used for next step operation ore concentrate, the heat that fluid-bed heat exchanger middle and upper part is overflowed
Air is collected remittance " L " curved venturi of feeding suspension bed base of evaporator in main of calling prisoners in after letting them out for exercise and is matched somebody with somebody by branched arm of calling prisoners in after letting them out for exercise
The middle part of wind structure.To sum up, powder can produce high-quality product in cooling procedure.Meanwhile, powder is in cooling procedure
In also create high-temperature hot air and superheated steam, hyperthermia and superheating air can deliver to roasting system as combustion air, reduce
Enterprise energy consumption, superheated steam can directly carry out industrial production or generate electricity for the acting of steam turbine turbine, reduce production cost, increase
Business Economic Benefit.
Description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the fluidisation schematic diagram of wind apparatus II.
As shown in the figure：Front-packed evaporator 1, distributing device 1-1, Natural Circulation evaporating heating surface 1-2, forced-circulation evaporation are heated
Face 1-3, the fluidisation 1-4 of wind apparatus I, flapper I 2, expansion joint I 3, suspension bed evaporimeter 4, expansion joint II 5, cyclone separator 6, lock
Gas device II 7, expansion joint III 8, fluid-bed heat exchanger 9, low temperature superheater 9-1, attemperator 9-2, high temperature superheater 9-3, evaporimeter I
9-4, the 9-5 of evaporimeter II, high-temperature economizer 9-6, low-level (stack-gas) economizer 9-7, oxygen-eliminating device heating surface 9-8, fluidisation the 9-9 of wind apparatus II,
It is drum 10, oxygen-eliminating device 11, boiler feed pump 12, desuperheat water pump 13, grug feeding jar 14, dosing pump 15, continuous blowdown expander 16, fixed
Phase blowdown expander 17, blowdown heat exchanger 18, roots blower 19, water circulating pump 20, air main 21, main bellows 22, distribution are air-dried
Pipe 23, regulating valve 24, distribution bellows 25, reallocation wind connecting leg 26, cloth wind arm 27, broadcast wind nozzle 28, arm 29 of calling prisoners in after letting them out for exercise, call prisoners in after letting them out for exercise
Main 30, " L " curved venturi blast pipe 31, hot-flow flue 32, air-introduced machine 33.
Specific embodiment
Embodiment
Below in conjunction with the accompanying drawings to the utility model to further illustrating, the boiler includes front-packed evaporator（1）, flapper I
（2）, suspension bed evaporimeter（4）, cyclone separator（6）, flapper II（7）, fluid-bed heat exchanger（9）, drum（10）, oxygen-eliminating device
（11）, chemicals dosing plant（14）And drainage.Drainage includes continuous blowdown expander（16）, periodical blowdown expander（17）
And blowdown heat exchanger（18）, continuous blowdown expander（16）With periodical blowdown expander（17）Respectively by blow-off line and blowdown
Heat exchanger（18）It is connected.Front-packed evaporator（1）Including distributing device（1-1）, Natural Circulation evaporating heating surface（1-2）, forced circulation
Evaporating heating surface（1-3）With fluidisation wind apparatus I（1-4）, Natural Circulation evaporating heating surface（1-2）With forced-circulation evaporation heating surface
（1-3）Heat exchanger tube using being staggered in arrangement and front two rows heat exchanger tube has Antiwear casing.Suspension bed evaporimeter（4）Lower disposed
Air intake, air intake is Venturi tube structure, suspension bed evaporimeter（4）Chamber design adopt all-sealed structure, whole stove
Thorax is welded into full film water cold wall structure by seamless steel pipe and band steel.Fluid-bed heat exchanger（9）Inside is separated into some chambers by dividing plate
Room, in addition to first chamber and last chamber low temperature superheater is sequentially arranged（9-1）, high temperature superheater（9-3）, evaporimeter
Ⅰ（9-4）, evaporimeter II（9-5）, high-temperature economizer（9-6）, low-level (stack-gas) economizer（9-7）With oxygen-eliminating device heating surface（9-8）, fluidisation
Bed heat exchanger（9）Low temperature superheater（9-1）With high temperature superheater（9-3）Attemperator is set between connecting tube（9-2）It is placed in stream
Heat exchanger of fluidized bed（9）Outside, fluid-bed heat exchanger（9）Bottom arrange fluidisation wind apparatus II（9-9）.
Front-packed evaporator（1）With suspension bed evaporimeter（4）By flapper I（2）Connection, flapper I（2）Steam with suspension bed
Send out device（4）Between arrange expansion joint I（3）.Suspension bed evaporimeter（4）With cyclone separator（6）Connection, and arrange therebetween
Expansion joint II（5）.Cyclone separator（6）With fluid-bed heat exchanger（9）By flapper II（7）Connection, and flapper II（7）
With fluid-bed heat exchanger（9）Between arrange expansion joint III（8）.Cyclone separator（6）Also it is connected with hot-air flue.Suspension bed steams
Send out device（4）With fluid-bed heat exchanger（9）It is connected by fluidizing wind pipeline.
Front-packed evaporator（1）Natural Circulation evaporating heating surface（1-2）Determining for drainage is connected to by blow-off line
Phase blowdown expander（17）, suspension bed evaporimeter（4）The periodical blowdown expander of drainage is connected to by blow-off line
（17）, fluid-bed heat exchanger（9）Evaporimeter I（9-4）, evaporimeter II（9-5）, high-temperature economizer（9-6）, low-level (stack-gas) economizer
（9-7）With oxygen-eliminating device heating surface（9-8）It is connected to the periodical blowdown expander of drainage by blow-off line respectively（17）.
Drum（10）By tedge and front-packed evaporator（1）Natural Circulation evaporating heating surface（1-2）And forced circulation
Evaporating heating surface（1-3）It is connected, drum（10）With forced-circulation evaporation heating surface（1-3）Between water circulating pump is set（20）；Vapour
Bag（10）By down-comer and suspension bed evaporimeter（4）It is connected；Drum（10）By drug feeding pipeline and chemicals dosing plant（14）It is connected,
And dosing pump is installed in drug feeding pipeline（15）；Drum（10）The continuous blowdown expansion of drainage is connected to by blow-off line
Device（16）；Drum（10）Fluid-bed heat exchanger is connected to by boiler feedwater pipeline（9）High-temperature economizer（9-6）.
Oxygen-eliminating device（11）By preheating waterpipe and fluid-bed heat exchanger（9）Oxygen-eliminating device heating surface（9-8）It is connected；Deoxygenation
Device（11）By desuperheat waterpipe and fluid-bed heat exchanger（9）Attemperator（9-2）It is connected, and oxygen-eliminating device（11）Attemperator（9-
2）Between desuperheat waterpipe on arrange desuperheat water pump（13）；Oxygen-eliminating device（11）By boiler feedwater pipeline and fluid-bed heat exchanger
（9）Low-level (stack-gas) economizer（9-7）It is connected, and oxygen-eliminating device（11）With low-level (stack-gas) economizer（9-7）Between boiler feedwater pipeline on set
Put boiler feed pump（12）；Oxygen-eliminating device（11）The continuous blowdown expander of drainage is connected to by low-pressure saturated steam pipeline
（16）With periodical blowdown expander（17）.
Fluid-bed heat exchanger（9）Bottom arrange fluidisation wind apparatus II（9-9）.Fluidisation wind apparatus II are by roots blower（19）
Successively with air main（21）, main bellows（22）, distribution air-dry pipe（23）, regulating valve（24）, distribution bellows（25）, reallocation wind connect
Pipe（26）, cloth wind arm（27）, broadcast wind nozzle（28）Connect and compose.
The course of work of the boiler：570 DEG C of powders enter front-packed evaporator by entrance（1）, Jing distributing devices（1-1）Distribution is equal
Natural Circulation evaporating heating surface is passed sequentially through after even in bulk by gravity（1-2）With forced-circulation evaporation heating surface（1-3）, powder
Body is in front-packed evaporator（1）Interior fast cooling is to less than 450 DEG C.Powder after cooling enters flapper I（2）, in the pressure being passed through
Used as under loose metal wind and feeding wind action, powder enters suspension bed evaporimeter to contracting inert gas（4）.In suspension bed evaporimeter
（4）After bottom powder mixes with air, mixture is flowed up, by suspension bed evaporimeter（4）Outlet is discharged into cyclonic separation
Device（6）.Mixture is in cyclone separator（6）It is interior it is separated after 400 DEG C of high temperature air Jing hot-flow flues（32）, air-introduced machine（33）Draw
Roasting system is delivered to, mixture is in cyclone separator（6）It is interior it is separated after 400 DEG C of powders enter flapper II（7）, it is being passed through
Compressed air as under loose metal wind and feeding wind action, powder enters fluid-bed heat exchanger（9）.In fluid-bed heat exchanger
（9）It is interior, roots blower（19）The Jing fluidisation wind apparatus II of the hp fluid air of generation（9-9）Cloth wind sends into fluid-bed heat exchanger
（9）It is interior to mix with powder, disturb, powder is made in " ↑, ↓ " state disturbances, and hyperthermia and superheating is passed sequentially through with " ∽ " type forms of motion
Device（9-3）, low temperature superheater（9-1）, evaporimeter I（9-4）, evaporimeter II（9-5）, high-temperature economizer（9-6）, low-level (stack-gas) economizer
（9-7）With oxygen-eliminating device heating surface（9-8）, finally, 80 DEG C of powder is cooled to from fluid-bed heat exchanger（9）The overfall row of afterbody
Put, into subsequent handling system.In fluid-bed heat exchanger（9）It is interior be heated after fluidized wind from fluid-bed heat exchanger（9）Top
Many arms of calling prisoners in after letting them out for exercise（29）Collect remittance to call prisoners in after letting them out for exercise main（30）, Jing calls prisoners in after letting them out for exercise main（30）Deliver to suspension bed evaporimeter（4）Bottom
" L " curved venturi blast pipe（31）Aditus laryngis at.Fluidized wind, loose metal wind and feeding wind adopt inert gas.
Claims (8)
1. a kind of fine ore suspending magnetization roasting powder chilling temperature reduction technology waste heat boiler, including front-packed evaporator（1）, flapper I
（2）, suspension bed evaporimeter（4）, cyclone separator（6）, flapper II（7）, fluid-bed heat exchanger（9）, drum（10）, oxygen-eliminating device
（11）, chemicals dosing plant and drainage, it is characterised in that front-packed evaporator（1）With suspension bed evaporimeter（4）By flapper I
（2）Connection, suspension bed evaporimeter（4）With cyclone separator（6）Connection, cyclone separator（6）With fluid-bed heat exchanger（9）Pass through
Flapper II（7）Connection, cyclone separator（6）Also it is connected with hot-air flue；Suspension bed evaporimeter（4）With fluid-bed heat exchanger
（9）It is connected by fluidizing wind pipeline, front-packed evaporator（1）, suspension bed evaporimeter（4）And fluid-bed heat exchanger（9）Pass through respectively
Blow-off line is connected to drainage；Described drum（10）By tedge, down-comer respectively with front-packed evaporator（1）With it is outstanding
Floating bed evaporimeter（4）It is connected, drum（10）By dosing pump（15）It is connected to chemicals dosing plant（14）, drum（10）By blow-off pipe
Road is connected to drainage, drum（10）Fluid-bed heat exchanger is connected to by boiler feedwater pipeline（9）；Described oxygen-eliminating device
（11）Respectively by preheating waterpipe, boiler feedwater pipeline and desuperheat waterpipe and fluid-bed heat exchanger（9）It is connected, oxygen-eliminating device
（11）Drainage is connected to by low-pressure saturated steam pipeline.
2. fine ore suspending magnetization roasting powder chilling temperature reduction technology waste heat boiler according to claim 1, it is characterised in that
Described drainage includes continuous blowdown expander（16）, periodical blowdown expander（17）And blowdown heat exchanger（18）, continuously
Blowdown expander（16）With periodical blowdown expander（17）Respectively by blow-off line and blowdown heat exchanger（18）It is connected.
3. fine ore suspending magnetization roasting powder chilling temperature reduction technology waste heat boiler according to claim 2, it is characterised in that
Described front-packed evaporator（1）Including distributing device（1-1）, Natural Circulation evaporating heating surface（1-2）, forced-circulation evaporation heating surface
（1-3）With fluidisation wind apparatus I（1-4）.
4. fine ore suspending magnetization roasting powder chilling temperature reduction technology waste heat boiler according to claim 3, it is characterised in that
Described suspension bed evaporimeter（4）The air distribution structure of the curved Venturi tube structure of lower disposed " L ".
5. fine ore suspending magnetization roasting powder chilling temperature reduction technology waste heat boiler according to claim 4, it is characterised in that
Described suspension bed evaporimeter（4）Chamber design adopt all-sealed structure, whole burner hearth is welded into entirely by seamless steel pipe and band steel
Film water cold wall structure.
6. fine ore suspending magnetization roasting powder chilling temperature reduction technology waste heat boiler according to claim 5, it is characterised in that
Described fluid-bed heat exchanger（9）Inside some chambers are separated into by dividing plate, in addition to first chamber and last chamber according to
Secondary arrangement low temperature superheater（9-1）, high temperature superheater（9-3）, evaporimeter I（9-4）, evaporimeter II（9-5）, high-temperature economizer
（9-6）, low-level (stack-gas) economizer（9-7）With oxygen-eliminating device heating surface（9-8）, fluid-bed heat exchanger（9）Low temperature superheater（9-1）With height
Warm superheater（9-3）Attemperator is set between connecting tube（9-2）It is placed in fluid-bed heat exchanger（9）Outside, fluid-bed heat exchanger（9）
Bottom arrange fluidisation wind apparatus II（9-9）.
7. fine ore suspending magnetization roasting powder chilling temperature reduction technology waste heat boiler according to claim 6, it is characterised in that
Described fluidisation wind apparatus II（9-9）By roots blower（19）With air main（21）, main bellows（22）, distribution air-dry pipe（23）、
Regulating valve（24）, distribution bellows（25）, reallocation wind connecting leg（26）, cloth wind arm（27）, broadcast wind nozzle（28）It is sequentially connected structure
Into.
8. fine ore suspending magnetization roasting powder chilling temperature reduction technology waste heat boiler according to claim 3, it is characterised in that
Described Natural Circulation evaporating heating surface（1-2）With forced-circulation evaporation heating surface（1-3）Heat exchanger tube using being staggered in arrangement
And front two rows heat exchanger tube has Antiwear casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621221868.5U CN206160079U (en) | 2016-11-14 | 2016-11-14 | Fine material suspension magnetizing roasting powder rapid cooling cooling technology exhaust -heat boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621221868.5U CN206160079U (en) | 2016-11-14 | 2016-11-14 | Fine material suspension magnetizing roasting powder rapid cooling cooling technology exhaust -heat boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206160079U true CN206160079U (en) | 2017-05-10 |
Family
ID=58658626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621221868.5U Withdrawn - After Issue CN206160079U (en) | 2016-11-14 | 2016-11-14 | Fine material suspension magnetizing roasting powder rapid cooling cooling technology exhaust -heat boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206160079U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106402820A (en) * | 2016-11-14 | 2017-02-15 | 大连科林能源工程技术开发有限公司 | Waste heat boiler for quenching and cooling process of suspended magnetization roasting powder of mine powder |
| CN110564951A (en) * | 2018-06-05 | 2019-12-13 | 中国科学院过程工程研究所 | Iron ore fluidization magnetizing roasting method |
-
2016
- 2016-11-14 CN CN201621221868.5U patent/CN206160079U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106402820A (en) * | 2016-11-14 | 2017-02-15 | 大连科林能源工程技术开发有限公司 | Waste heat boiler for quenching and cooling process of suspended magnetization roasting powder of mine powder |
| CN110564951A (en) * | 2018-06-05 | 2019-12-13 | 中国科学院过程工程研究所 | Iron ore fluidization magnetizing roasting method |
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