CN206279231U - The system for processing iron content greasy filth - Google Patents
The system for processing iron content greasy filth Download PDFInfo
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- CN206279231U CN206279231U CN201621298364.3U CN201621298364U CN206279231U CN 206279231 U CN206279231 U CN 206279231U CN 201621298364 U CN201621298364 U CN 201621298364U CN 206279231 U CN206279231 U CN 206279231U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model discloses a kind of system for processing iron content greasy filth, the system includes：Extraction equipment, extraction equipment has iron content greasy filth entrance, colvent inlet, oil-containing solvent outlet and oil-containing solids solid discharge；Mixing arrangement, mixing arrangement has oil-containing solids residue entrance, coal powder entrance, Iron Ore Powder entrance, binding agent entrance and mixed material to export；Press ball device, press ball device has mixed material entrance and mixing pelletizing to export；Drying device, drying device has mixing pelletizing entrance and dries pelletizing outlet；Rotary hearth furnace, rotary hearth furnace dries pelletizing entrance, reduction exhanst gas outlet and reduction solid product outlet, there is burner in rotary hearth furnace；Molten point of stove of combustion gas, the molten point stove of combustion gas has solid reduction product entrance, molten point of exhanst gas outlet, molten iron outlet and solid discharge.The system can effectively reclaim the oil product and ferro element in iron content greasy filth, and coking phenomenon will not occur in smelting process, so as to realize the recycling of iron content greasy filth while system stable operation is ensured.
Description
Technical field
The utility model belongs to field of metallurgy, specifically, the system that the utility model belongs to treatment iron content greasy filth.
Background technology
Treatment iron content greasy filth method has burning method, and feature is to be burned iron content greasy filth, using the high temperature for burning generation
Flue gas drying simultaneously aoxidizes the prepared di-iron trioxide of ferroso-ferric oxide.The method does not recycle the oil in iron content greasy filth, and
The secondary pollutions such as flue dust and sewage are easily produced in burning process.
After iron content greasy filth is mixed with iron ore by a certain percentage, flow process is smelted iron using traditional " blast furnace-converter ", should
Although the advantages of flow technology maturation and huge production ability, deficiency is still present：One be to high grade coke it is strong according to
Rely and require；Two is that iron content greasy filth easily occurs coking into blast furnace is interior, easily blocks blast furnace, and it is difficult to cause burner hearth to control.
Therefore need to be improved existing smelting process, eliminate the dependence of smelting process STRENGTH ON COKE, it is to avoid burner hearth knot
The generation of burnt problem, especially to the smelting recovery utilization rate of iron ore.
Utility model content
The utility model is intended at least solve to a certain extent one of technical problem in correlation technique.Therefore, this reality
It is to propose a kind of system for processing iron content greasy filth with a new purpose, iron content greasy filth can be effectively reclaimed using the system
In oil product and ferro element, and coking phenomenon will not occur in smelting process, so as to ensure the same of system stable operation
The recycling of Shi Shixian iron content greasy filth.
In one side of the present utility model, the utility model proposes a kind of system for processing iron content greasy filth.According to this
The embodiment of utility model, the system includes：
Extraction equipment, the extraction equipment has iron content greasy filth entrance, colvent inlet, oil-containing solvent outlet and oil-containing solids
Solid discharge；
Mixing arrangement, the mixing arrangement has oil-containing solids residue entrance, coal powder entrance, Iron Ore Powder entrance, binding agent
Entrance and mixed material are exported, and the oil-containing solids residue entrance is connected with the oil-containing solids solid discharge；
There is press ball device, the press ball device mixed material entrance and mixing pelletizing to export, the mixed material entrance
It is connected with mixed material outlet；
Drying device, the drying device has mixing pelletizing entrance and dries pelletizing outlet, the mixing pelletizing entrance
It is connected with the mixing pelletizing outlet；
Rotary hearth furnace, the rotary hearth furnace is exported with pelletizing entrance, reduction exhanst gas outlet and reduction solid product is dried, and
It is disposed with burner in the rotary hearth furnace, the pelletizing entrance that dries dries pelletizing outlet and be connected with described；
Molten point of stove of combustion gas, the molten point stove of the combustion gas have solid reduction product entrance, molten point of exhanst gas outlet, molten iron outlet and
Solid discharge, the solid reduction product entrance is connected with solid reduction product outlet.
Thus, the system of the treatment iron content greasy filth according to the utility model embodiment is by oily to iron content using extraction equipment
Mud is processed, it is possible to achieve the recovery of oil product in iron content greasy filth, and by isolated iron content solid residue and coal dust, iron ore
Powder and binding agent are mixed, and iron content solid residue therein can substitute portion of binder, such that it is able to reduce cost of material,
And by adding Iron Ore Powder, the viscosity of iron content solid residue can be directly reduced, so that can be with continuing processing procedure behind
It is prevented effectively from raw material and sticks to equipment surface, while after iron content solid residue is mixed with coal dust, Iron Ore Powder and binding agent
Pelletizing supply into rotary hearth furnace and carry out reduction treatment, due to fully reclaiming iron content greasy filth in above-mentioned steps in oil product,
Therefore coking phenomenon will not be produced in the reduction process, and is managed by molten point of molten office of stove of rotary hearth furnace reduction and combustion gas, can
Effectively to reclaim the ferro element in iron content greasy filth.Thus, can be realized while system stable operation is ensured using the system
The recycling of oil product and ferro element in iron content greasy filth.
In addition, the system of the treatment iron content greasy filth according to the utility model above-described embodiment can also have what is added as follows
Technical characteristic：
Optional, the system of the treatment iron content greasy filth is further included：Oil product separator, the oil product separator
With oil-containing colvent inlet, oil product outlet and solvent outlet, the oil-containing colvent inlet is connected with the oil-containing solvent outlet, institute
Solvent outlet is stated to be connected with the colvent inlet.Thus, it is possible to significantly reduce processing cost.
Optional, the system of the treatment iron content greasy filth is further included：Heat accumulating type air preheater, the heat accumulating type air preheater
With air outlet slit, the high-temperature flue gas entry and institute after exhanst gas outlet after air intake, high-temperature flue gas entry, heat exchange and heat exchange
State reduction exhanst gas outlet to be connected with described at least one of point exhanst gas outlet that melts, air outlet slit and the burner after the heat exchange
It is molten with the combustion gas to divide at least one of stove to be connected；Smoke eliminator, the smoke eliminator have smoke inlet and
Purifying smoke is exported, and the smoke inlet is connected with exhanst gas outlet after the heat exchange.Thus, it is possible to significantly improve whole system
Heat utilization efficiency.
Optional, the reduction exhanst gas outlet and described melting divide at least one of exhanst gas outlet and the drying device phase
Even.Thus, it is possible to significantly reduce energy consumption for drying.
Additional aspect of the present utility model and advantage will be set forth in part in the description, partly by from following description
In become obvious, or by it is of the present utility model practice recognize.
Brief description of the drawings
Of the present utility model above-mentioned and/or additional aspect and advantage will from description of the accompanying drawings below to embodiment is combined
Become substantially and be readily appreciated that, wherein：
Fig. 1 is the system structure diagram of the treatment iron content greasy filth according to the utility model one embodiment；
Fig. 2 is the system structure diagram of the treatment iron content greasy filth according to the utility model further embodiment；
Fig. 3 is the system structure diagram of the treatment iron content greasy filth according to the utility model another embodiment；
Fig. 4 is the system structure diagram of the treatment iron content greasy filth according to the utility model another embodiment；
Fig. 5 is the method stream of the system treatment iron content greasy filth of the treatment iron content greasy filth according to the utility model one embodiment
Journey schematic diagram；
Fig. 6 is the method for the system treatment iron content greasy filth of the treatment iron content greasy filth according to the utility model further embodiment
Schematic flow sheet；
Fig. 7 is the system method that processes iron content greasy filth of the treatment iron content greasy filth according to the utility model another embodiment
Schematic flow sheet；
Fig. 8 is the system method that processes iron content greasy filth of the treatment iron content greasy filth according to the utility model another embodiment
Schematic flow sheet；
Fig. 9 is the system structure diagram of the treatment iron content greasy filth according to the utility model another embodiment.
Specific embodiment
Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein ad initio
Same or similar element or element with same or like function are represented to same or similar label eventually.Below by ginseng
The embodiment for examining Description of Drawings is exemplary, it is intended to for explaining the utility model, and it is not intended that to the utility model
Limitation.
In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. term should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or integrally；Can be
Mechanically connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be two
The connection of element internal or two interaction relationships of element, unless otherwise clearly restriction.For the common skill of this area
For art personnel, concrete meaning of the above-mentioned term in the utility model can be as the case may be understood.
In one side of the present utility model, the utility model proposes a kind of system for processing iron content greasy filth.According to this
The embodiment of utility model, with reference to Fig. 1, the system includes：Extraction equipment 100, mixing arrangement 200, press ball device 300, drying
Molten point of stove 600 of device 400, rotary hearth furnace 500 and combustion gas.
According to embodiment of the present utility model, extraction equipment 100 has iron content greasy filth entrance 101, colvent inlet 102, contains
Oil solvent exports 103 and oil-containing solids solid discharge 104, and is suitable to mix iron content greasy filth with solvent and carries out extraction processing, with
Just obtain containing oil solvent and oil-containing solids residue.Thus, iron content greasy filth is processed by using extraction equipment, it is possible to achieve
The recovery of oil product in iron content greasy filth, and it is possible to prevente effectively from during subsequent smelting coking phenomenon generation, such that it is able to protect
Card system stable operation.Specifically, after iron content greasy filth is mixed with a certain amount of solvent, being sufficiently stirred for making iron content greasy filth and solvent
It is fully contacted, while to certain heat (50-80 degrees Celsius of temperature) is provided in extraction equipment, oil is molten in improving iron content greasy filth
Solubility in agent, such that it is able to realize the separation of oil product and oil-containing solids residue in iron content greasy filth.It should be noted that ability
Field technique personnel can be according to actual needs to solvent particular type select, as long as can realize in iron content greasy filth
Oil is extracted.
According to embodiment of the present utility model, mixing arrangement 200 has oil-containing solids residue entrance 201, coal powder entrance
202nd, Iron Ore Powder entrance 203, binding agent entrance 204 and mixed material outlet 205, oil-containing solids residue entrance 201 is consolidated with oil-containing
Body solid discharge 104 is connected, and is suitable to the oil-containing solids residue for obtaining above-mentioned extract and separate and coal dust, Iron Ore Powder and binding agent
Mixed, to obtain mixed material.Inventor has found, by by extraction process isolated iron content solid residue and coal
Powder, Iron Ore Powder and binding agent are mixed, and iron content solid residue therein can substitute portion of binder, such that it is able to reduce original
Material cost, and by adding Iron Ore Powder, the viscosity of iron content solid residue can be directly reduced, so as to continue processing procedure behind
In it is possible to prevente effectively from raw material sticks to equipment surface.It should be noted that those skilled in the art can be according to actual needs
Particular type to binding agent is selected, for example, can use bentonite.
According to one embodiment of the present utility model, the mixing ratio of oil-containing solids residue and coal dust, Iron Ore Powder and binding agent
Example is not particularly restricted, and those skilled in the art can be selected according to actual needs, according to one of the present utility model
Specific embodiment, oil-containing solids residue and coal dust, Iron Ore Powder and binding agent is mixed according to following ratio, the addition of binding agent
It is the 3~15% of Iron Ore Powder, the addition of oil-containing solids residue is the 15~30% of Iron Ore Powder, and mixture is controlled by coal dust
C in materialmol/OmolIt is 1.1~1.3.
According to embodiment of the present utility model, press ball device 300 has mixed material entrance 301 and mixing pelletizing outlet
302, mixed material entrance 301 is connected with mixed material outlet 205, and is suitable to carry out mixed material obtained above at pressure ball
Reason, to obtain mixing pelletizing.Thus, it is possible to the contact area between dramatically increasing each component, so as to improve iron reduction efficiency.
According to one embodiment of the present utility model, the particle diameter for mixing pelletizing is not particularly restricted, people in the art
Member can be selected according to actual needs, and according to a specific embodiment of the present utility model, the particle diameter for mixing pelletizing can be with
It is 5~50mm.Specifically, well mixed mixed material is carried out into mixing pressure ball treatment, the ellipsoid that particle diameter is 15-50mm is obtained
Shape material.During whole production run, when elliposoidal material particular diameter is too small, power consumption substantially increases during pressure ball, balling-up
Significant difficulties, and work as elliposoidal material particular diameter it is excessive after, back segment pretreatment and rotary hearth furnace reduction during, heat transfer effect show
Writing reduces, and the thermal efficiency is substantially deteriorated.Can realize that iron content greasy filth is fully contacted with Iron Ore Powder by pressure ball, it is pretreated by back segment
After heat treatment in journey, the organic component in oil-containing solids residue is evaporated in gaseous form, increased the charcoal and iron of residual
Miberal powder contact area, when it carries out reduction process into rotary hearth furnace, improves the reduction efficiency of iron.And it is effectively prevented from containing
There is coking problem in rotary hearth furnace in iron greasy filth.On the other hand, pressure ball is mixed with Iron Ore Powder by by oil-containing solids residue, can be with
Adhered in the reactor when being prevented effectively from oil-containing solids residue because directly processing, it is difficult to remove.Balling process is except using pressure ball
It is outer also to can select disk spin, obtain the spheroidal material that particle diameter is 5-20mm.
According to embodiment of the present utility model, drying device 400 has mixing pelletizing entrance 401 and dries pelletizing outlet
402, mixing pelletizing entrance 401 is connected with mixing pelletizing outlet 302, and is suitable to for mixing pelletizing obtained above to be dried place
Reason, to obtain drying pelletizing.
According to one embodiment of the present utility model, the condition of dried process is not particularly restricted, people in the art
Member can be selected according to actual needs, and according to a specific embodiment of the present utility model, the temperature of dried process can be with
It it is 140~300 degrees Celsius, the time can be 10~50 minutes.Thus, it is possible to significantly improve pelletizing drying efficiency.
According to further embodiment of the present utility model, the moisture content dried in pelletizing is not particularly restricted, this area
Technical staff can be selected according to actual needs, according to a specific embodiment of the present utility model, in drying pelletizing
Moisture content can be not higher than 0.5wt%.Thus, it is possible to improve the reduction efficiency of iron during sequential reduction.
Specifically, under 140-300 degrees Celsius of drying temperature, by after drying, moisture content is down to 0.5wt% in material
Hereinafter, and material is by after dried process, the removing of moisture can dredge the aperture of ball interior, while improving the machine of spheroid
Tool intensity, is conducive to material to be reduced more fully after entering rotary hearth furnace, and whole drying time can be controlled in 10-50min.
According to embodiment of the present utility model, rotary hearth furnace 500 has and dries pelletizing entrance 501, reduction exhanst gas outlet 502 and
Reduction solid product outlet 503, and burner (not shown) is disposed with rotary hearth furnace 500, dry pelletizing entrance 501 and dry ball
Group's outlet 402 is connected, and is suitable to for the pelletizing that dries obtained above to carry out reduction treatment, solid to obtain reduction flue gas and reduction
Body product.Thus, supplied to rotary hearth furnace by by the pelletizing that dries containing iron content solid residue and coal dust, Iron Ore Powder and binding agent
In carry out reduction treatment, due to the oil product in iron content greasy filth is fully reclaimed in the above-mentioned steps, therefore in the reduction process
Coking phenomenon will not be produced, the stable operation of rotary hearth furnace is thereby may be ensured that.
According to one embodiment of the present utility model, the temperature of reduction treatment is not particularly restricted, people in the art
Member can be selected according to actual needs, according to a specific embodiment of the present utility model, the temperature of burner in rotary hearth furnace
At 1000~1400 degrees Celsius, the reduction treatment time is 30~120 minutes for control.Thus, it is possible to further improve the reduction of iron
Efficiency.
According to further embodiment of the present utility model, the temperature for reducing solid product can be 900~1100 degrees Celsius.
Thus, molten office reason is carried out in the reduction solid product heat being delivered into molten point of stove of follow-up combustion gas, follow-up molten point can be significantly reduced
Process energy consumption.
Specifically, being dried obtained above during pelletizing heat delivers to rotary hearth furnace, rotary hearth furnace surrounding is disposed with many burners and is
Whole burner hearth provides heat, burn outer flame directly with dry pelletizing and contact, burner temperature control at 1000-1400 degrees Celsius,
Recovery time 30-120min, it is 900-1100 degrees Celsius to complete the pelletizing temperature after reduction.It is every burner of rotary hearth furnace heat supply
Using autonomous control system, each reaction zone temperature of precise control rotary hearth furnace is in required temperature range.Due to entering to turn to material
Before the stove reduction of bottom, oil-containing solids residue and Iron Ore Powder are premixed into pressure ball in advance, after drying, raw material reclaimed water is got to remove,
The aperture of ball interior is dredged, increases dried residual charcoal with the contact area between miberal powder, while the machinery for improving spheroid is strong
Degree, therefore enter after rotary hearth furnace the reactivity for strengthening between the two, improve the rate of recovery of metallic ore.Secondly, whole process solid
Product uses hot charging, further reduces the energy consumption in ironmaking processes.3rd, according to testing result in mixed process to raw material
Middle to add appropriate raw coal powder, between 1.2-1.5, excessive charcoal is in rotary hearth furnace reduction process to make charcoal and weight of iron ratio after destructive distillation
In appropriate heat can be provided, it is possible to decrease rotary hearth furnace gas consumption, increase economic efficiency.
According to embodiment of the present utility model, molten point of stove 600 of combustion gas has solid reduction product entrance 601, molten point of flue gas
Outlet 602, molten iron exports 603 and solid discharge 604, and solid reduction product entrance 601 exports 503 phases with solid reduction product
Connect, and be suitable to for reduction solid product obtained above to carry out molten office reason, flue gas, molten iron and a residue are divided to obtain melting.By
This, it is possible to achieve the recycling of ferro element in iron content greasy filth.
According to one embodiment of the present utility model, the molten point in-furnace temperature of combustion gas is not particularly restricted, art technology
Personnel can be selected according to actual needs, according to a specific embodiment of the present utility model, can be fired using regenerator
It is 1300~1600 degrees Celsius that burner controls molten point of in-furnace temperature of combustion gas.Thus, it is possible to significantly improve molten iron be separated with slag
Efficiency.
Specifically, above-mentioned rotary hearth furnace reduction is obtained during solid product heat delivers to molten point of stove of combustion gas, one can be entered using hot charging
Step reduces the energy consumption of whole ironmaking processes.It is burner hearth heat supply to use heat-storage type burner mode of heating, and control in-furnace temperature exists
Between 1300-1600 degrees Celsius.Combustion gas melt point stove both sides be provided with to spray burner, using reversing combustion realize heat accumulating type fire
Burn, each burner can independent control.
The system of the treatment iron content greasy filth according to the utility model embodiment is entered by using extraction equipment to iron content greasy filth
Row treatment, it is possible to achieve the recovery of oil product in iron content greasy filth, and by isolated iron content solid residue and coal dust, Iron Ore Powder and
Binding agent is mixed, and iron content solid residue therein can substitute portion of binder, such that it is able to reduce cost of material, and
By adding Iron Ore Powder, the viscosity of iron content solid residue can be directly reduced, so that can be effective in continuing processing procedure behind
Raw material is avoided to stick to equipment surface, while iron content solid residue and coal dust, Iron Ore Powder and binding agent are carried out into mixed ball
Group's supply to carrying out reduction treatment in rotary hearth furnace, due to the oil product in the above-mentioned steps fully in recovery iron content greasy filth, therefore
Coking phenomenon will not be produced in the reduction process, and is managed by molten point of molten office of stove of rotary hearth furnace reduction and combustion gas, Ke Yiyou
Effect reclaims the ferro element in iron content greasy filth.Thus, iron content can be realized while system stable operation is ensured using the system
The recycling of oil product and ferro element in greasy filth.
With reference to Fig. 2, the system of the treatment iron content greasy filth according to the utility model embodiment is further included：Oil product separates dress
Put 700.
According to embodiment of the present utility model, oil product separator 700 has oil-containing colvent inlet 701, oil product outlet 702
With solvent outlet 703, oil-containing colvent inlet 701 is connected with oil-containing solvent outlet 103, solvent outlet 703 and the phase of colvent inlet 102
Connect, and be suitable to be obtained in extraction equipment containing separating treatment is carried out in oil solvent, to obtain oil product and solvent, and will separate
The solvent for obtaining carries out extraction processing in returning to extraction equipment.Thus, by the way that separating treatment will be carried out containing solvent, it is possible to achieve
Solvent is recycled, so as to significantly reducing cost of material.
With reference to Fig. 3, the system of the treatment iron content greasy filth according to the utility model embodiment is further included：Heat accumulating type is empty pre-
Device 800 and smoke eliminator 900.
According to embodiment of the present utility model, heat accumulating type air preheater 800 has air intake 801, high-temperature flue gas entry
802nd, exchange heat after exhanst gas outlet 803 and heat exchange after air outlet slit 804, high-temperature flue gas entry 802 with reduction exhanst gas outlet 502 and melt
At least one of point exhanst gas outlet 602 is connected, and air outlet slit 804 and burner and combustion gas are melted in point stove 600 at least after heat exchange
One of be connected, and be suitable to melt the reduction flue gas obtained in rotary hearth furnace and combustion gas melting of obtaining in point stove divide in flue gas at least it
One and air exchanged heat, so as to flue gas after air after being exchanged heat and heat exchange, and air after heat exchange is back in rotary hearth furnace
At least one of molten point of stove of burner and combustion gas used as combustion-supporting gas.Thus, by reclaiming the reduction flue gas in rotary hearth furnace
Or/and the molten point of waste heat of flue gas in point stove is melted in combustion gas, and the waste heat of recovery is used to carry out air the pre-heat treatment, and will changed
Air is supplied to the burner of rotary hearth furnace and/or the molten point stove of combustion gas and used as combustion-supporting gas after heat, whole such that it is able to effectively improve
The heat utilization efficiency of individual process, and reduce molten point of stove energy consumption of rotary hearth furnace and/or combustion gas.Specifically, heat exchange after air temperature not
Higher than 650 degrees Celsius.
According to embodiment of the present utility model, there is smoke eliminator 900 smoke inlet 901 and purifying smoke to export
902, smoke inlet 901 is connected with exhanst gas outlet 803 after heat exchange, and is suitable to carry out flue gas after heat exchange obtained above at purification
Reason, to be purified flue gas.Specifically, flue gas removes row up to standard after nitrogen sulfide after smoke eliminator after exchanging heat
Put.It should be noted that those skilled in the art can be according to actual needs to smoke eliminator particular type select
Select.
With reference to Fig. 4, according to embodiment of the present utility model, in reduction exhanst gas outlet 502 and molten point of exhanst gas outlet 602 extremely
It is one of few to be connected with drying device 400, and it is suitable to melt the reduction flue gas obtained in rotary hearth furnace and combustion gas melting of obtaining in point stove
Divide at least one of flue gas to return to drying device to be used as dried medium.Thus, it is possible to significantly reduce drying process energy consumption
Input.
As described above, the system of the treatment iron content greasy filth according to the utility model embodiment can have the advantages that selected from following
At least one：
The system of the treatment iron content greasy filth according to the utility model embodiment can thoroughly realize that iron content greasy filth resource is returned
The oil product of wherein high added value value is received, while reclaiming the metallic element in iron content greasy filth, the system uses solvent extraction in addition
Carry out processing again after oil in iron content greasy filth and effectively solve coking problem during iron content oil-sludge treatment.
The system of the treatment iron content greasy filth according to the utility model embodiment is straight with miberal powder using the iron content greasy filth after extraction
Mixing pressure ball is connect, makes full use of iron content greasy filth to replace portion of binder, realize balling-up requirement.Meanwhile, directly reduce iron content greasy filth
Viscosity, process iron content greasy filth during be not in adhesive reaction device cosmetic issue.In addition, the oil of iron content greasy filth can be straight
The heat needed as miberal powder reduction is connect, the iron in iron content greasy filth can also be reduced into molten iron and be reclaimed.
The system of the treatment iron content greasy filth according to the utility model embodiment directly mixes pressure with miberal powder using iron content greasy filth
Ball is smelted iron, and can be prevented effectively from iron content greasy filth blast furnace ironmaking process and coking problem is occurred.
Produced by by molten point of stove of rotary hearth furnace and combustion gas in the system of the treatment iron content greasy filth according to the utility model embodiment
After raw high-temperature flue gas and air direct heat transfer, can abundant recovered flue gas heat preheated air, effectively improve whole process
Heat utilization efficiency.
Understand for convenience, below with reference to Fig. 5-8 pairs of system using the treatment iron content greasy filth of the utility model embodiment
The method for processing iron content greasy filth is described in detail.According to embodiment of the present utility model, with reference to Fig. 5, the method includes：
S100：Iron content greasy filth and solvent are supplied to mix into extraction equipment and carries out extraction processing
In the step, iron content greasy filth and solvent are supplied to mix into extraction equipment carries out extraction processing, to be contained
Oil solvent and oil-containing solids residue.Thus, iron content greasy filth is processed by using extraction equipment, it is possible to achieve iron content greasy filth
The recovery of middle oil product, and it is possible to prevente effectively from during subsequent smelting coking phenomenon generation, thereby may be ensured that system is steady
Fixed operation.Specifically, after iron content greasy filth is mixed with a certain amount of solvent, being sufficiently stirred for making iron content greasy filth fully be connect with solvent
Touch, while to certain heat (50-80 degrees Celsius of temperature) is provided in extraction equipment, improve oil in iron content greasy filth in a solvent
Solubility, such that it is able to realize the separation of oil product and oil-containing solids residue in iron content greasy filth.It should be noted that art technology
Personnel can be according to actual needs to solvent particular type select, as long as can realize by iron content greasy filth oil extraction
Out.
S200：Oil-containing solids residue is supplied with coal dust, Iron Ore Powder and binding agent and is mixed into mixing arrangement
In the step, oil-containing solids residue that above-mentioned extract and separate is obtained and coal dust, Iron Ore Powder and binding agent supply to
Mixed in mixing arrangement, to obtain mixed material.Inventor has found, consolidates by by the isolated iron content of extraction process
Body residue is mixed with coal dust, Iron Ore Powder and binding agent, and iron content solid residue therein can substitute portion of binder, so that
Cost of material can be reduced, and by adding Iron Ore Powder, the viscosity of iron content solid residue can be directly reduced, so that behind
It is possible to prevente effectively from raw material sticks to equipment surface in continuous processing procedure.It should be noted that those skilled in the art can be with root
Selected according to the particular type being actually needed to binding agent, for example, can use bentonite.
According to one embodiment of the present utility model, the mixing ratio of oil-containing solids residue and coal dust, Iron Ore Powder and binding agent
Example is not particularly restricted, and those skilled in the art can be selected according to actual needs, according to one of the present utility model
Specific embodiment, oil-containing solids residue and coal dust, Iron Ore Powder and binding agent is mixed according to following ratio, the addition of binding agent
It is the 3~15% of Iron Ore Powder, the addition of oil-containing solids residue is the 15~30% of Iron Ore Powder, and mixture is controlled by coal dust
C in materialmol/OmolIt is 1.1~1.3.
S300：Mixed material is supplied into press ball device carries out pressure ball treatment
In the step, mixed material obtained above is supplied into press ball device carries out pressure ball treatment, to be mixed
Close pelletizing.Thus, it is possible to the contact area between dramatically increasing each component, so as to improve iron reduction efficiency.
According to one embodiment of the present utility model, the particle diameter for mixing pelletizing is not particularly restricted, people in the art
Member can be selected according to actual needs, and according to a specific embodiment of the present utility model, the particle diameter for mixing pelletizing can be with
It is 5~50mm.Specifically, well mixed mixed material is carried out into mixing pressure ball treatment, the ellipsoid that particle diameter is 15-50mm is obtained
Shape material.During whole production run, when elliposoidal material particular diameter is too small, power consumption substantially increases during pressure ball, balling-up
Significant difficulties, and work as elliposoidal material particular diameter it is excessive after, back segment pretreatment and rotary hearth furnace reduction during, heat transfer effect show
Writing reduces, and the thermal efficiency is substantially deteriorated.Can realize that iron content greasy filth is fully contacted with Iron Ore Powder by pressure ball, it is pretreated by back segment
After heat treatment in journey, the organic component in oil-containing solids residue is evaporated in gaseous form, increased the charcoal and iron of residual
Miberal powder contact area, when it carries out reduction process into rotary hearth furnace, improves the reduction efficiency of iron.And it is effectively prevented from containing
There is coking problem in rotary hearth furnace in iron greasy filth.On the other hand, pressure ball is mixed with Iron Ore Powder by by oil-containing solids residue, can be with
Adhered in the reactor when being prevented effectively from oil-containing solids residue because directly processing, it is difficult to remove.Balling process is except using pressure ball
It is outer also to can select disk spin, obtain the spheroidal material that particle diameter is 5-20mm.
S400：Mixing pelletizing is supplied treatment is dried into drying device
In the step, mixing pelletizing obtained above is supplied treatment is dried into drying device, to be done
Dry pelletizing.Thus, it is possible to significantly improve the reduction efficiency of iron during sequential reduction.
According to further embodiment of the present utility model, the moisture content dried in pelletizing is not particularly restricted, this area
Technical staff can be selected according to actual needs, according to a specific embodiment of the present utility model, in drying pelletizing
Moisture content can be not higher than 0.5wt%.Thus, it is possible to improve the reduction efficiency of iron during sequential reduction.Specifically, in 140-
Under 300 degrees Celsius of drying temperature, by after drying, moisture content is down to below 0.5wt%, and material by drying in material
After treatment, the removing of moisture can dredge the aperture of ball interior, while improving the mechanical strength of spheroid, be conducive to material to enter
Reduced after rotary hearth furnace more fully, whole drying time can be controlled in 10-50min.
S500：Pelletizing will be dried supplying into rotary hearth furnace carries out reduction treatment
In the step, by it is obtained above dry pelletizing and supply into rotary hearth furnace carry out reduction treatment, to be reduced
Flue gas and reduction solid product.Thus, by the way that pelletizing will be dried containing iron content solid residue and coal dust, Iron Ore Powder and binding agent
Supply to carrying out reduction treatment in rotary hearth furnace, due to the oil product in the above-mentioned steps fully in recovery iron content greasy filth, thus
Coking phenomenon will not be produced in the reduction process, the stable operation of rotary hearth furnace is thereby may be ensured that.
According to one embodiment of the present utility model, the temperature of reduction treatment is not particularly restricted, people in the art
Member can be selected according to actual needs, according to a specific embodiment of the present utility model, the temperature of burner in rotary hearth furnace
At 1000~1400 degrees Celsius, the reduction treatment time is 30~120 minutes for control.Thus, it is possible to further improve the reduction of iron
Efficiency.
According to further embodiment of the present utility model, the temperature for reducing solid product can be 900~1100 degrees Celsius.
Thus, molten office reason is carried out in the reduction solid product heat being delivered into molten point of stove of follow-up combustion gas, follow-up molten point can be significantly reduced
Process energy consumption.Specifically, being dried obtained above during pelletizing heat delivers to rotary hearth furnace, rotary hearth furnace surrounding is disposed with many burners and is
Whole burner hearth provides heat, burn outer flame directly with dry pelletizing and contact, burner temperature control at 1000-1400 degrees Celsius,
Recovery time 30-120min, it is 900-1100 degrees Celsius to complete the pelletizing temperature after reduction.It is every burner of rotary hearth furnace heat supply
Using autonomous control system, each reaction zone temperature of precise control rotary hearth furnace is in required temperature range.Due to entering to turn to material
Before the stove reduction of bottom, oil-containing solids residue and Iron Ore Powder are premixed into pressure ball in advance, after drying, raw material reclaimed water is got to remove,
The aperture of ball interior is dredged, increases dried residual charcoal with the contact area between miberal powder, while the machinery for improving spheroid is strong
Degree, therefore enter after rotary hearth furnace the reactivity for strengthening between the two, improve the rate of recovery of metallic ore.Secondly, whole process solid
Product uses hot charging, further reduces the energy consumption in ironmaking processes.3rd, according to testing result in mixed process to raw material
Middle to add appropriate raw coal powder, between 1.2-1.5, excessive charcoal is in rotary hearth furnace reduction process to make charcoal and weight of iron ratio after destructive distillation
In appropriate heat can be provided, it is possible to decrease rotary hearth furnace gas consumption, increase economic efficiency.
S600：Reduction solid product is supplied carries out molten office reason into molten point of stove of combustion gas
In the step, above-mentioned resulting reduction solid product is supplied carries out molten office reason into molten point of stove of combustion gas, with
Just molten point of flue gas, molten iron and residue are obtained.Thus, it is possible to realize the recycling of ferro element in iron content greasy filth.
According to one embodiment of the present utility model, the molten point in-furnace temperature of combustion gas is not particularly restricted, art technology
Personnel can be selected according to actual needs, according to a specific embodiment of the present utility model, can be fired using regenerator
It is 1300~1600 degrees Celsius that burner controls molten point of in-furnace temperature of combustion gas.Thus, it is possible to significantly improve molten iron be separated with slag
Efficiency.
Specifically, above-mentioned rotary hearth furnace reduction is obtained during solid product heat delivers to molten point of stove of combustion gas, one can be entered using hot charging
Step reduces the energy consumption of whole ironmaking processes.It is burner hearth heat supply to use heat-storage type burner mode of heating, and control in-furnace temperature exists
Between 1300-1600 degrees Celsius.Combustion gas melt point stove both sides be provided with to spray burner, using reversing combustion realize heat accumulating type fire
Burn, each burner can independent control.
The system of the treatment iron content greasy filth according to the utility model embodiment is entered by using extraction equipment to iron content greasy filth
Row treatment, it is possible to achieve the recovery of oil product in iron content greasy filth, and by isolated iron content solid residue and coal dust, Iron Ore Powder and
Binding agent is mixed, and iron content solid residue therein can substitute portion of binder, such that it is able to reduce cost of material, and
By adding Iron Ore Powder, the viscosity of iron content solid residue can be directly reduced, so that can be effective in continuing processing procedure behind
Raw material is avoided to stick to equipment surface, while iron content solid residue and coal dust, Iron Ore Powder and binding agent are carried out into mixed ball
Group's supply to carrying out reduction treatment in rotary hearth furnace, due to the oil product in the above-mentioned steps fully in recovery iron content greasy filth, therefore
Coking phenomenon will not be produced in the reduction process, and is managed by molten point of molten office of stove of rotary hearth furnace reduction and combustion gas, Ke Yiyou
Effect reclaims the ferro element in iron content greasy filth.Thus, iron content can be realized while system stable operation is ensured using the system
The recycling of oil product and ferro element in greasy filth.
With reference to Fig. 6, the method for the treatment iron content greasy filth according to the utility model embodiment is further included：
S700：Oil solvent will be contained supply carries out separating treatment into oil product separator
In the step, will contain oil solvent and supply carries out separating treatment into oil product separator, to obtain oil product and molten
Agent, and solvent return S100 is carried out into extraction processing.Thus, by the way that separating treatment will be carried out containing solvent, it is possible to achieve solvent
Recycle, so as to significantly reduce cost of material.
With reference to Fig. 7, the method for the treatment iron content greasy filth according to the utility model embodiment is further included：
S800：At least one of reduction flue gas and molten point of flue gas and air are supplied into heat accumulating type air preheater and changed
Heat
In the step, at least one of flue gas and air is divided to supply into heat accumulating type air preheater with molten reduction flue gas
Row heat exchange, flue gas so as to air after exchange heat and after exchanging heat, and air after heat exchange is back to the burning in S500 in rotary hearth furnace
At least one of molten point of stove of combustion gas in mouth and S600 is used as combustion-supporting gas.Thus, by reclaiming the reduction in rotary hearth furnace
The molten point of waste heat of flue gas in point stove is melted in flue gas or/and combustion gas, and the waste heat of recovery is used to carry out air the pre-heat treatment, and
Air after heat exchange is supplied to the burner of rotary hearth furnace and/or the molten point stove of combustion gas and used as combustion-supporting gas, such that it is able to effectively carry
The heat utilization efficiency of whole process high, and reduce molten point of stove energy consumption of rotary hearth furnace and/or combustion gas.Specifically, heat exchange after air temperature
Not higher than 650 degrees Celsius of degree.
S900：Flue gas after heat exchange is supplied into smoke eliminator carries out purified treatment
In the step, flue gas after heat exchange is supplied carries out purified treatment into the smoke eliminator, net to obtain
Change flue gas.Specifically, flue gas removes qualified discharge after nitrogen sulfide after smoke eliminator after exchanging heat.
With reference to Fig. 8, the method for the treatment iron content greasy filth according to the utility model embodiment is further included：
S1000：Reduction flue gas is situated between with drying device during at least one of point flue gas is back to S400 is melted as dry
Matter is used.
In the step, at least one of reduction flue gas and molten point of flue gas are back in S400 drying device as drying
Medium is used.Thus, it is possible to significantly reduce the input of drying process energy consumption.
Below with reference to specific embodiment, the utility model is described, it is necessary to explanation is, these embodiments are only
Descriptive, and the utility model is limited never in any form.
Embodiment
The iron content greasy filth provided by Anshan iron and steel plant, measure it to fix carbon content by Industrial Analysis is 10 ± 1wt%, and volatile matter contains
Amount is more than 50wt%, and lime-ash (based on iron component) content is 39 ± 0.8wt%.With reference to Fig. 9, by lighter hydrocarbons solvent and iron content greasy filth
It is 8 according to mass ratio:Mixed in 1 supply to extraction equipment, controlled temperature for 75 degrees Celsius, at such a temperature, stirred molten
Agent, to clean iron content greasy filth, cleans 30 ± 5min with iron content greasy filth, obtains the oil-containing containing oil solvent and oil content less than 4wt% and consolidates
Body residue；To obtain being supplied containing oil solvent and separating treatment is carried out into oil product separator, obtain oil product and lighter hydrocarbons solvent, and
Isolated solvent is supplied and is continuing with into extraction equipment；Then the oil-containing solids residue that will be obtained and Iron Ore Powder, first
Base cellulose and coal dust mix according to following mass ratio, and the addition of iron content greasy filth is the 20 ± 2% of miberal powder amount, the addition of coal dust
Amount is controlling C in mixed materialmol/OmolIt is 1.2, the addition of methylcellulose is the 5 ± 0.5% of mixed material, and this is mixed
Compound is supplied into mixing arrangement and is well mixed, and obtains mixed material, and mixed material is then supplied into press ball device into compacting
Into particle diameter for the elliposoidal of 25 ± 2mm mixes pelletizing；The mixing pelletizing for suppressing is delivered to drying device and is carried out by induction system
Dried process, mixing pelletizing is dried under 200 ± 10 degrees Celsius, and drying time is controlled in 10min；By gained dry mixed
In pelletizing feeding rotary hearth furnace, by the temperature for controlling the flow of each burner to control burner hearth, rotary hearth furnace entrance fire box temperature
At 1000 degrees Celsius, centre is often separated by a burner, and corresponding temperature increases by 60 ± 20 degrees Celsius, and it is nearer to separate out mouth for control
Five burner temperatures are reduced successively, and 50 ± 30 degrees Celsius are reduced successively per an adjacent burner temperature.Finally dry pelletizing
There is reduction reaction at 1000~1100 degrees Celsius, obtain reduction solid product and reduction flue gas, the reduction that then will be obtained is consolidated
Body product heat is sent in molten point of stove of combustion gas, and under 1550 ± 15 degrees Celsius, iron is fused into molten iron, at the same obtain molten point of flue gas and
Residue, the reduction flue gas and combustion gas for then obtaining rotary hearth furnace melts the molten point flue gas obtained in point stove and supplies to heat accumulating type air preheater
In exchanged heat, flue gas after air and heat exchange, and air after heat exchange is back to burner and combustion in rotary hearth furnace after being exchanged heat
Used as combustion-supporting gas in molten point of stove of gas；The reduction flue gas obtained in rotary hearth furnace and combustion gas are melted the molten point of flue gas obtained in point stove
At least one of return drying device used as dried medium.And supply to enter into smoke eliminator by flue gas after heat exchange
Row purified treatment, to be purified flue gas.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or spy that the embodiment or example are described
Point is contained at least one embodiment of the present utility model or example.In this manual, to the schematic table of above-mentioned term
State and be necessarily directed to identical embodiment or example.And, the specific features of description, structure, material or feature can be with
Combined in an appropriate manner in any one or more embodiments or example.Additionally, in the case of not conflicting, this area
Technical staff the feature of the different embodiments or example described in this specification and different embodiment or example can be entered
Row is combined and combined.
Although embodiment of the present utility model has been shown and described above, it is to be understood that above-described embodiment is
Exemplary, it is impossible to it is interpreted as to limitation of the present utility model, one of ordinary skill in the art is in scope of the present utility model
It is interior above-described embodiment to be changed, changed, replaced and modification.
Claims (4)
1. it is a kind of process iron content greasy filth system, it is characterised in that including：
Extraction equipment, the extraction equipment has iron content greasy filth entrance, colvent inlet, oil-containing solvent outlet and oil-containing solids residue
Outlet；
Mixing arrangement, the mixing arrangement has oil-containing solids residue entrance, coal powder entrance, Iron Ore Powder entrance, binding agent entrance
Exported with mixed material, the oil-containing solids residue entrance is connected with the oil-containing solids solid discharge；
Press ball device, the press ball device has mixed material entrance and mixing pelletizing outlet, the mixed material entrance and institute
Mixed material outlet is stated to be connected；
Drying device, the drying device has mixing pelletizing entrance and dries pelletizing outlet, mixing pelletizing entrance and the institute
Mixing pelletizing outlet is stated to be connected；
Rotary hearth furnace, the rotary hearth furnace is exported with pelletizing entrance, reduction exhanst gas outlet and reduction solid product is dried, and described
It is disposed with burner in rotary hearth furnace, the pelletizing entrance that dries dries pelletizing outlet and be connected with described；
Molten point of stove of combustion gas, the molten point stove of the combustion gas has solid reduction product entrance, molten point of exhanst gas outlet, molten iron outlet and residue
Outlet, the solid reduction product entrance is connected with solid reduction product outlet.
2. system according to claim 1, it is characterised in that further include：
Oil product separator, the oil product separator has oil-containing colvent inlet, oil product outlet and solvent outlet, the oil-containing
Colvent inlet is connected with the oil-containing solvent outlet, and the solvent outlet is connected with the colvent inlet.
3. system according to claim 1 and 2, it is characterised in that further include：
Heat accumulating type air preheater, the heat accumulating type air preheater has after air intake, high-temperature flue gas entry, heat exchange exhanst gas outlet and changes
Air outlet slit after heat, the high-temperature flue gas entry and at least one of the reduction exhanst gas outlet and the molten point of exhanst gas outlet
It is connected, at least one of molten point of stove of air outlet slit and the burner and the combustion gas is connected after the heat exchange；
Smoke eliminator, the smoke eliminator has smoke inlet and purifying smoke outlet, the smoke inlet and institute
Exhanst gas outlet is connected after stating heat exchange.
4. system according to claim 1, it is characterised in that in the reduction exhanst gas outlet and the molten point of exhanst gas outlet
At least one of be connected with the drying device.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621298364.3U CN206279231U (en) | 2016-11-29 | 2016-11-29 | The system for processing iron content greasy filth |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621298364.3U CN206279231U (en) | 2016-11-29 | 2016-11-29 | The system for processing iron content greasy filth |
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| CN206279231U true CN206279231U (en) | 2017-06-27 |
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| CN201621298364.3U Expired - Fee Related CN206279231U (en) | 2016-11-29 | 2016-11-29 | The system for processing iron content greasy filth |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106435082A (en) * | 2016-11-29 | 2017-02-22 | 北京神雾环境能源科技集团股份有限公司 | System and method for treating iron-containing oily sludge |
| CN108341570A (en) * | 2018-04-23 | 2018-07-31 | 鞍山缘友诚技术有限公司 | A kind of nuisanceless recovery and treatment method and system of iron content greasy filth |
| CN112479529A (en) * | 2020-12-04 | 2021-03-12 | 湖北爱国环保技术开发有限公司 | Process for treating oil sludge by dry distillation method |
-
2016
- 2016-11-29 CN CN201621298364.3U patent/CN206279231U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106435082A (en) * | 2016-11-29 | 2017-02-22 | 北京神雾环境能源科技集团股份有限公司 | System and method for treating iron-containing oily sludge |
| CN108341570A (en) * | 2018-04-23 | 2018-07-31 | 鞍山缘友诚技术有限公司 | A kind of nuisanceless recovery and treatment method and system of iron content greasy filth |
| CN108341570B (en) * | 2018-04-23 | 2023-12-05 | 鞍山缘友诚技术有限公司 | Pollution-free recycling treatment method and system for iron-containing oil sludge |
| CN112479529A (en) * | 2020-12-04 | 2021-03-12 | 湖北爱国环保技术开发有限公司 | Process for treating oil sludge by dry distillation method |
| CN112479529B (en) * | 2020-12-04 | 2023-12-05 | 湖北爱国环保技术开发有限公司 | Dry distillation process for treating oil sludge |
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Denomination of utility model: System and method for treating iron-contained oil sludge Effective date of registration: 20180322 Granted publication date: 20170627 Pledgee: The Bank of Beijing Limited by Share Ltd. Anwar Road Branch Pledgor: Shenwu Technology Group Co.,Ltd. Registration number: 2018990000210 |
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