CN106435082A - System and method for treating iron-containing oily sludge - Google Patents
System and method for treating iron-containing oily sludge Download PDFInfo
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- CN106435082A CN106435082A CN201611078598.1A CN201611078598A CN106435082A CN 106435082 A CN106435082 A CN 106435082A CN 201611078598 A CN201611078598 A CN 201611078598A CN 106435082 A CN106435082 A CN 106435082A
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- pelletizing
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/10—Making spongy iron or liquid steel, by direct processes in hearth-type furnaces
- C21B13/105—Rotary hearth-type furnaces
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/0006—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/14—Multi-stage processes processes carried out in different vessels or furnaces
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a system and a method for treating iron-containing oily sludge. The system comprises an extraction device, a mixing device, a pelletizing device, a drying device, a rotary hearth furnace and a fuel gas melting separation furnace, wherein the extraction device is provided with an iron-containing oily sludge inlet, a solvent inlet, an oily solvent outlet and an oily solid residue outlet; the mixing device is provided with an oily solid residue inlet, a pulverized coal inlet, an iron ore powder inlet, a bonder inlet and a mixed material outlet; the pelletizing device is provided with a mixed material inlet and a mixed pellet outlet; the drying device is provided with a mixed pellet inlet and a drying pellet outlet; the rotary hearth furnace is provided with a drying pellet inlet, a reduction smoke outlet and a reduction solid product outlet; a burner is arranged in the rotary hearth furnace; and the fuel gas melting separation furnace is provided with a solid reduction product inlet, a melting separation smoke outlet, a molten iron outlet and a residue outlet. By adopting the system, oil and iron in the iron-containing oily sludge can be effectively recycled; and coking does not happen during a smelting process, so that stable operation of the system is ensured, and resource utilization of the iron-containing oily sludge is realized.
Description
Technical field
The invention belongs to field of metallurgy, specifically, the invention belongs to the system and method for processing iron content greasy filth.
Background technology
Processing iron content greasy filth method has burning method, and feature is to burn iron content greasy filth, using the high temperature for burning generation
Flue gas drying simultaneously aoxidizes the prepared iron sesquioxide of ferroso-ferric oxide.The method does not recycle the oil in iron content greasy filth, and
The secondary pollution such as flue dust and sewage is easily produced in burning process.
After iron content greasy filth is mixed with iron mine by a certain percentage, flow process is smelted iron using traditional " blast furnace-converter ", should
Although the advantages of flow process technology maturation and huge production ability, yet suffer from deficiency：One be to high grade coke strong according to
Rely and require；Two is that iron content greasy filth enters easily generation coking in blast furnace, easily blocks blast furnace, and causes burner hearth control difficult.
It is thus desirable to improving to existing smelting process, the dependency of smelting process STRENGTH ON COKE is eliminated, it is to avoid burner hearth is tied
The generation of burnt problem, especially the smelting recovery utilization rate to iron mine.
Content of the invention
It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.For this purpose, the present invention
One purpose is to propose a kind of system and method for processing iron content greasy filth, adopts the system can be with efficient recovery iron content greasy filth
Oil product and ferrum element, and coking phenomenon will not occur in smelting process, so as to while system stable operation is ensured
Realize the recycling of iron content greasy filth.
In one aspect of the invention, the present invention proposes a kind of system for processing iron content greasy filth.Reality according to the present invention
Example is applied, 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 outlet, 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
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 dry, and
Burner is disposed with the rotary hearth furnace, described dry pelletizing entrance with described dry pelletizing outlet be connected；
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
Solid discharge, the solid reduction product entrance is connected with solid reduction product outlet.
Thus, the system of process iron content greasy filth according to embodiments of the present invention is by being entered to iron content greasy filth using extraction equipment
Row 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 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, can directly reduce the viscosity of iron content solid residue, can be effective in processing procedure so as to continue behind
Raw material is avoided to stick to equipment surface, while iron content solid residue is carried out mixed ball with coal dust, Iron Ore Powder and binding agent
Group's supply carries out reduction treatment to rotary hearth furnace, due to fully having reclaimed the oil product in iron content greasy filth in above-mentioned steps, therefore
Coking phenomenon will not be produced in the reduction process, and office reason, Ke Yiyou are melted by molten point of stove of rotary hearth furnace reduction and combustion gas
Effect reclaims the ferrum 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 ferrum element in greasy filth.
In addition, the system for processing iron content greasy filth according to the above embodiment of the present invention can also have following additional technology
Feature：
In some embodiments of the invention, the system for processing iron content greasy filth is further included：Oil product segregation apparatuss,
The oil product segregation apparatuss have oil-containing colvent inlet, oil product outlet and solvent outlet, and the oil-containing colvent inlet is contained with described
Oil solvent outlet is connected, and the solvent outlet is connected with the colvent inlet.Thus, it is possible to significantly reduce processing cost.
In some embodiments of the invention, the system for processing iron content greasy filth is further included：Heat accumulating type air preheater,
The heat accumulating type air preheater has air intake, high-temperature flue gas entry, air outlet slit after exhanst gas outlet and heat exchange after heat exchange, described
High-temperature flue gas entry is connected with least one of the reduction exhanst gas outlet and the molten point of exhanst gas outlet, empty after the heat exchange
At least one of molten point of stove of gas outlet and the burner and the combustion gas is connected；Smoke eliminator, the gas cleaning dress
Put and export with smoke inlet and purifying smoke, the smoke inlet is connected with exhanst gas outlet after the heat exchange.Thus, it is possible to aobvious
Write the heat utilization efficiency for improving whole system.
In some embodiments of the invention, at least one of the reduction exhanst gas outlet and the molten point of exhanst gas outlet
It is connected with the drying device.Thus, it is possible to significantly reduce energy consumption for drying.
In another aspect of the invention, the present invention proposes a kind of method for processing iron content greasy filth.According to the present invention's
Embodiment, methods described includes：
(1) mixing in supplying iron content greasy filth and solvent to the extraction equipment carries out extraction processing, to obtain oil-containing
Solvent and oil-containing solids residue；
(2) mixed in supplying the oil-containing solids residue to the mixing arrangement with coal dust, Iron Ore Powder and binding agent
Close, to obtain mixed material；
(3) in supplying the mixed material to press ball device, pressure ball process is carried out, to obtain mixing pelletizing；
(4) in supplying the mixing pelletizing to the drying device, process is dried, to obtain drying pelletizing；
(5) described drying during pelletizing is supplied to the rotary hearth furnace is carried out reduction treatment, to obtain reducing flue gas and to go back
Former solid product；
(6) carry out melting office reason in supplying the reduction solid product to molten point of stove of the combustion gas, to obtain molten point
Flue gas, molten iron and residue.
Thus, the method for process iron content greasy filth according to embodiments of the present invention by carrying out extraction processing to iron content greasy filth,
Can realize 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
Mixed, iron content solid residue therein can substitute portion of binder, such that it is able to reduce cost of material, and by adding
Plus Iron Ore Powder, can directly reduce the viscosity of iron content solid residue, original can be prevented effectively from so as to continue in processing procedure behind
Material sticks to equipment surface, while iron content solid residue and coal dust, Iron Ore Powder and binding agent are carried out mixed pelletizing supply
Reduction treatment is carried out to rotary hearth furnace, due to fully having reclaimed the oil product in iron content greasy filth in above-mentioned steps, therefore at this also
Coking phenomenon will not be produced during original, and office reason is melted by molten point of stove of rotary hearth furnace reduction and combustion gas, can be with efficient recovery
Ferrum element in iron content greasy filth.Thus, can be realized in iron content greasy filth while system stable operation is ensured using the method
Oil product and the recycling of ferrum element.
In addition, the system for processing iron content greasy filth according to the above embodiment of the present invention can also have following additional technology
Feature：
In some embodiments of the invention, the method for processing iron content greasy filth is further included：(7) by the oil-containing
Solvent carries out separating treatment in supplying to the oil product segregation apparatuss, to obtain oil product and solvent, and the solvent is returned
Step (1) carries out the extraction processing.Thus, it is possible to significantly reduce processing cost.
In some embodiments of the invention, the method for processing iron content greasy filth is further included：(8) by the reduction
At least one of flue gas and the molten point of flue gas carry out heat exchange in supplying to the heat accumulating type air preheater with air, to obtain
Flue gas after air and heat exchange after heat exchange, and by air after the heat exchange be back to the burner described in step (5) in rotary hearth furnace and
At least one of molten point of stove of the combustion gas in step (6) is used as combustion-supporting gas；(9) by flue gas after the heat exchange supply to
Purified treatment is carried out in the smoke eliminator, in order to it is purified flue gas.Thus, it is possible to significantly improve the heat of whole system
Utilization rate.
In some embodiments of the invention, the method for processing iron content greasy filth is further included：(10) described will go back
At least one of former flue gas and the molten point of flue gas are back to drying device described in step (4) and use as dried medium.
Thus, it is possible to significantly reduce energy consumption for drying.
In some embodiments of the invention, in step (2), by the oil-containing solids residue and the coal dust, described
Iron Ore Powder and the binding agent mix according to following ratio, and the addition of the binding agent is the 3～15% of the Iron Ore Powder, institute
The addition for stating oil-containing solids residue is the 15～30% of the Iron Ore Powder, and the addition of the coal dust is to control the mixture
C in materialmol/OmolFor 1.1～1.3；Optional, in step (3), the particle diameter of the mixing pelletizing is 5～50mm；Optional,
In step (4), the temperature of the dried is 140～300 degrees Celsius, and the time is 10～50 minutes；Optional, in step
(4), in, the moisture content for drying in pelletizing is not higher than 0.5wt%.
In some embodiments of the invention, in step (5), in the rotary hearth furnace temperature control of burner 1000～
1400 degrees Celsius, the reduction treatment time is 30～120 minutes；Optional, in step (5), the temperature of the reduction solid product
Spend for 900～1100 degrees Celsius；Optional, in step (6), molten point of stove interior temperature of the combustion gas is controlled using regenerator burner
Spend for 1300～1600 degrees Celsius；Optional, in step (8), not higher than 650 degrees Celsius of the temperature of air after the heat exchange.
The additional aspect and advantage of the present invention will be set forth in part in the description, and partly will become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become from the description with reference to accompanying drawings below to embodiment
Substantially and easy to understand, wherein：
Fig. 1 is the system structure diagram for processing iron content greasy filth according to an embodiment of the invention；
Fig. 2 is the system structure diagram of the process iron content greasy filth according to further embodiment of the present invention；
Fig. 3 is the system structure diagram of the process iron content greasy filth according to another embodiment of the present invention；
Fig. 4 is the system structure diagram of the process iron content greasy filth according to another embodiment of the present invention；
Fig. 5 is the method flow schematic diagram of the process iron content greasy filth according to another embodiment of the present invention；
Fig. 6 is the method flow schematic diagram of the process iron content greasy filth according to another embodiment of the present invention；
Fig. 7 is the method flow schematic diagram of the process iron content greasy filth according to another embodiment of the present invention；
Fig. 8 is the method flow schematic diagram of the process iron content greasy filth according to another embodiment of the present invention；
Fig. 9 is the system structure diagram of the process iron content greasy filth according to another embodiment of the present invention.
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from start to finish
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and be not considered as limiting the invention.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or integral；Can be that machinery connects
Connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be in two elements
The connection in portion or the interaction relationship of two elements, unless otherwise clearly restriction.For one of ordinary skill in the art
For, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In one aspect of the invention, the present invention proposes a kind of system for processing iron content greasy filth.Reality according to the present invention
Example is applied, with reference to Fig. 1, the system includes：Extraction equipment 100, mixing arrangement 200, press ball device 300, drying device 400, turn bottom
Molten point of stove 600 of stove 500 and combustion gas.
Embodiments in accordance with the present invention, extraction equipment 100 is with iron content greasy filth entrance 101, colvent inlet 102, containing oil soluble
Agent outlet 103 and oil-containing solids solid discharge 104, and be suitable to mix iron content greasy filth with solvent and carry out extraction processing, so as to must
Arrive containing oil solvent and oil-containing solids residue.Thus, by being processed to iron content greasy filth using extraction equipment, it is possible to achieve iron content
The recovery of oil product in greasy filth, and can be prevented effectively from the generation of coking phenomenon during subsequent smelting, thereby may be ensured that and be
System stable operation.Specifically, after iron content greasy filth being mixed with a certain amount of solvent, it is sufficiently stirred for making iron content greasy filth abundant with solvent
Contact, while provide certain heat (temperature 50-80 degree Celsius) in extraction equipment, improves in iron content greasy filth oil in a solvent
Dissolubility, 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 this area skill
Art personnel can be selected to the particular type of solvent according to actual needs, as long as can realize the oil extraction in iron content greasy filth
Take out.
Embodiments in accordance with the present invention, mixing arrangement 200 is with oil-containing solids residue entrance 201, coal powder entrance 202, ferrum
Breeze entrance 203, binding agent entrance 204 and mixed material outlet 205, oil-containing solids residue entrance 201 and oil-containing solids residue
Outlet 104 is connected, and the oil-containing solids residue for being suitable to obtain above-mentioned extract and separate is mixed with coal dust, Iron Ore Powder and binding agent
Close, to obtain mixed material.Inventor has found, by by iron content solid residue isolated for extraction process and coal dust, ferrum
Breeze and binding agent are mixed, and iron content solid residue therein can substitute portion of binder, become such that it is able to reduce raw material
This, and by adding Iron Ore Powder, can directly reduce the viscosity of iron content solid residue, can in processing procedure so as to continue behind
Equipment surface is sticked to be prevented effectively from raw material.It should be noted that those skilled in the art can be according to actual needs to viscous
The particular type of knot agent is selected, for example, can adopt bentonite.
According to one embodiment of present invention, the mixed proportion of oil-containing solids residue and coal dust, Iron Ore Powder and binding agent is simultaneously
It is not particularly limited, those skilled in the art can be selected according to actual needs, according to the present invention is embodied as
Example, oil-containing solids residue and coal dust, Iron Ore Powder and binding agent are mixed according to following ratio, and the addition of binding agent is Iron Ore Powder
3～15%, the addition of oil-containing solids residue is the 15～30% of Iron Ore Powder, controls C in mixed material by coal dustmol/
OmolFor 1.1～1.3.
Embodiments in accordance with the present invention, press ball device 300 is mixed with mixed material entrance 301 and mixing pelletizing outlet 302
Close material inlet 301 to be connected with mixed material outlet 205, and be suitable to for mixed material obtained above pressure ball process be carried out, with
Just obtain mixing pelletizing.Thus, it is possible to the contact area between each component is dramatically increased, so as to improve ferrum reduction efficiency.
According to one embodiment of present invention, the particle diameter of mixing pelletizing is not particularly restricted, and those skilled in the art can
To be selected according to actual needs, according to a specific embodiment of the present invention, the particle diameter that mixes pelletizing can be 5～
50mm.Specifically, the mixed material of mix homogeneously is carried out mixing pressure ball process, obtains elliposoidal thing of the particle diameter for 15-50mm
Material.During whole production run, when elliposoidal material particular diameter is too small, during pressure ball, power consumption substantially increases, and balling-up is obvious
Difficulty, and work as elliposoidal material particular diameter excessive after, during back segment pretreatment and rotary hearth furnace reduction, heat transfer effect significantly drops
Low, the thermal efficiency is substantially deteriorated.Iron content greasy filth be can achieve by pressure ball to be fully contacted with Iron Ore Powder, in back segment preprocessing process
Heat treatment after, the organic component in oil-containing solids residue is evaporated in gaseous form, increased charcoal and the Iron Ore Powder of residual
Contact area, when its entrance rotary hearth furnace carries out reduction process, improves the reduction efficiency of ferrum.And it is effectively prevented from iron content oil
Mud occurs coking problem in rotary hearth furnace.On the other hand, by oil-containing solids residue is mixed pressure ball with Iron Ore Powder, can be effective
Adhere in the reactor when avoiding oil-containing solids residue because directly processing, it is difficult to remove.Balling process is in addition to using pressure ball
Optional disk spin, obtains spheroidal material of the particle diameter for 5-20mm.
Embodiments in accordance with the present invention, drying device 400 has mixing pelletizing entrance 401 and dries pelletizing outlet 402, mixes
Close pelletizing entrance 401 to be connected with mixing pelletizing outlet 302, and be suitable to for mixing pelletizing obtained above process is dried, with
Just obtain drying pelletizing.
According to one embodiment of present invention, the condition of dried is not particularly restricted, and those skilled in the art can
To be selected according to actual needs, according to a specific embodiment of the present invention, the temperature of dried can be 140～
300 degrees Celsius, the time can be 10～50 minutes.Thus, it is possible to significantly improve pelletizing drying efficiency.
According to still a further embodiment, the moisture content for drying in pelletizing is not particularly restricted, art technology
Personnel can be selected according to actual needs, and according to a specific embodiment of the present invention, the moisture content for drying in pelletizing can
To be not higher than 0.5wt%.Thus, it is possible to improve the reduction efficiency of ferrum during sequential reduction.
Specifically, under 140-300 degree Celsius of baking temperature, after drying, in material, moisture content is down to 0.5wt%
Hereinafter, and material is after dried, the removing of moisture can dredge the aperture of ball interior, while improving the machine of spheroid
Tool intensity, is conducive to material to reduce after entering rotary hearth furnace more abundant, and whole drying time can be controlled in 10-50min.
Embodiments in accordance with the present invention, rotary hearth furnace 500 have dry 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 go out with pelletizing is dry
Mouth 402 is connected, and is suitable to for the pelletizing that dries obtained above to carry out reduction treatment, to obtain reducing flue gas and reducing solid producing
Thing.Thus, by drying during pelletizing is supplied to rotary hearth furnace containing iron content solid residue and coal dust, Iron Ore Powder and binding agent
Row reduction treatment, due to fully having reclaimed the oil product in iron content greasy filth in above-mentioned steps, therefore will not in the reduction process
Coking phenomenon is produced, thereby may be ensured that the stable operation of rotary hearth furnace.
According to one embodiment of present invention, the temperature of reduction treatment is not particularly restricted, and those skilled in the art can
To be selected according to actual needs, according to a specific embodiment of the present invention, in rotary hearth furnace, the temperature control of burner exists
1000～1400 degrees Celsius, the reduction treatment time is 30～120 minutes.Thus, it is possible to improve the reduction efficiency of ferrum further.
According to still a further embodiment, the temperature of reduction solid product can be 900～1100 degrees Celsius.By
This, the reduction solid product heat is delivered to be carried out melting office reason in molten point of stove of follow-up combustion gas, can significantly reduce subsequently molten dividing
Journey energy consumption.
Specifically, the pelletizing heat that dries obtained above is delivered in 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 degree Celsius,
Recovery time 30-120min, the pelletizing temperature after completing to reduce is 900-1100 degree Celsius.For rotary hearth furnace heat supply per root burner
Using autonomous control system, each reaction zone temperature of precise control rotary hearth furnace is in temperature required scope.Due to entering to turn to material
Before the stove reduction of bottom, in advance oil-containing solids residue is premixed pressure ball with Iron Ore Powder, after drying, in raw material, moisture is removed,
The aperture of dredging ball interior, increases dried residual charcoal with the contact area between breeze, while the machinery for improving spheroid is strong
Degree, strengthens reactivity between the two after therefore entering rotary hearth furnace, improve the response rate of metallic ore.Secondly, whole process solid
Product reduces the energy consumption in ironmaking processes further all using hot charging.3rd, according to testing result to raw material in mixed process
The appropriate raw coal powder of middle addition, after making dry distilling, charcoal is with weight of iron ratio between 1.2-1.5, and excessive charcoal is in rotary hearth furnace reduction process
In appropriate heat can be provided, it is possible to decrease rotary hearth furnace gas consumption, increase economic efficiency.
Embodiments in accordance with the present invention, molten point of stove 600 of combustion gas is with solid reduction product entrance 601, molten point of exhanst gas outlet
602nd, molten iron outlet 603 and solid discharge 604, solid reduction product entrance 601 is connected with solid reduction product outlet 503, and
It is suitable to carry out melting office reason by reduction solid product obtained above, to obtain molten point of flue gas, molten iron and residue.Thus, may be used
To realize the recycling of ferrum element in iron content greasy filth.
According to one embodiment of present invention, the molten point in-furnace temperature of combustion gas is not particularly restricted, those skilled in the art
Can be selected according to actual needs, according to a specific embodiment of the present invention, can be controlled using regenerator burner
Molten point of in-furnace temperature of combustion gas is 1300～1600 degrees Celsius.Thus, it is possible to significantly improve the separation efficiency of molten iron and slag.
Specifically, above-mentioned rotary hearth furnace reduction is obtained solid product heat to deliver in 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 using heat-storage type burner mode of heating, control in-furnace temperature exists
Between 1300-1600 degree Celsius.Point stove both sides being melted in combustion gas and being provided with the burner to spraying, heat accumulating type combustion is realized using reversing combustion
Burn, each burner can independent control.
The system of process iron content greasy filth according to embodiments of the present invention by using extraction equipment to iron content greasy filth at
Reason, 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 bonding
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 pass through
Add Iron Ore Powder, can directly reduce the viscosity of iron content solid residue, can be prevented effectively from processing procedure so as to continue behind
Raw material sticks to equipment surface, while iron content solid residue and coal dust, Iron Ore Powder and binding agent are carried out mixed pelletizing confession
To reduction treatment is carried out to rotary hearth furnace, due to fully having reclaimed the oil product in iron content greasy filth in above-mentioned steps, therefore at this
Coking phenomenon will not be produced in reduction process, and office reason is melted by molten point of stove of rotary hearth furnace reduction and combustion gas, effectively can return
Receive the ferrum element in iron content greasy filth.Thus, iron content greasy filth can be realized while system stable operation is ensured using the system
Middle oil product and the recycling of ferrum element.
With reference to Fig. 2, the system of process iron content greasy filth according to embodiments of the present invention is further included：Oil product segregation apparatuss
700.
Embodiments in accordance with the present invention, oil product segregation apparatuss 700 are with oil-containing colvent inlet 701, oil product outlet 702 and molten
Agent outlet 703, oil-containing colvent inlet 701 is connected with oil-containing solvent outlet 103, and solvent outlet 703 is connected with colvent inlet 102,
And be suitable to obtain in extraction equipment carrying out separating treatment containing in oil solvent, to obtain oil product and solvent, and will separate
To solvent return extraction equipment in carry out extraction processing.Thus, by separating treatment will be carried out containing solvent, it is possible to achieve molten
The recycling of agent, so as to significantly reduce cost of material.
With reference to Fig. 3, the system of process iron content greasy filth according to embodiments of the present invention is further included：Heat accumulating type air preheater
800 and smoke eliminator 900.
Embodiments in accordance with the present invention, heat accumulating type air preheater 800 with air intake 801, high-temperature flue gas entry 802, change
Air outlet slit 804 after exhanst gas outlet 803 and heat exchange after heat, high-temperature flue gas entry 802 and reduction exhanst gas outlet 502 and molten divides a flue gas
At least one of outlet 602 is connected, at least one of molten point of stove 600 of air outlet slit 804 and burner and combustion gas phase after heat exchange
Even, and it is suitable to melt the reduction flue gas for obtaining in rotary hearth furnace and combustion gas at least one of molten point of flue gas obtaining in point stove and sky
Gas carries out heat exchange, in order to flue gas after air and heat exchange is obtained after heat exchange, and burner air after heat exchange being back in rotary hearth furnace
Melt at least one of point stove with combustion gas to use as combustion-supporting gas.Thus, by reclaiming reduction flue gas or/and combustion in rotary hearth furnace
Gas melts the waste heat of molten point of flue gas in point stove, and the waste heat of recovery is used for carrying out air the pre-heat treatment, and will be empty after heat exchange
Gas is supplied and is used as combustion-supporting gas to the burner of rotary hearth furnace and/or the molten point stove of combustion gas, such that it is able to effectively improve whole process
Heat utilization efficiency, and reduce molten point of stove energy consumption of rotary hearth furnace and/or combustion gas.Specifically, after heat exchange, the temperature of air is not higher than 650
Degree Celsius.
Embodiments in accordance with the present invention, smoke eliminator 900 is with smoke inlet 901 and purifying smoke outlet 902, cigarette
Gas entrance 901 is connected with exhanst gas outlet after heat exchange 803, and is suitable to for flue gas after heat exchange obtained above to carry out purified treatment, with
Just flue gas is purified.Specifically, flue gas after heat exchange is removed after smoke eliminator qualified discharge after nitrogen sulfide.Need
Illustrate, those skilled in the art can be selected to the particular type of smoke eliminator according to actual needs.
With reference to Fig. 4, embodiments in accordance with the present invention, reduce in exhanst gas outlet 502 and molten point of exhanst gas outlet 602 at least it
One is connected with drying device 400, and is suitable to the reduction flue gas for obtaining in rotary hearth furnace and combustion gas are melted the molten point of cigarette for obtaining in point stove
At least one of gas returns drying device and uses as dried medium.Thus, it is possible to significantly reduce the throwing of dry run energy consumption
Enter.
As described above, the system of process iron content greasy filth according to embodiments of the present invention can have selected from following at least
One of：
The system of process iron content greasy filth according to embodiments of the present invention can thoroughly be realized iron content greasy filth resource and reclaim which
The oil product that middle high added value is worth, while reclaiming the metallic element in iron content greasy filth, in addition the system adopts solvent extraction iron content
Carried out again in greasy filth after oil processing coking problem during effectively solving iron content oil-sludge treatment.
The system of process iron content greasy filth according to embodiments of the present invention is directly mixed with breeze using the iron content greasy filth after extraction
Combined pressure ball, makes full use of iron content greasy filth and replaces portion of binder, realize balling-up requirement.Meanwhile, directly reduce the viscous of iron content greasy filth
Property, be not in adhesive reaction device cosmetic issue during iron content greasy filth is processed.In addition, the oil of iron content greasy filth directly can be made
Reduce, for breeze, the heat for needing, the ferrum in iron content greasy filth can also be reduced into molten iron and be reclaimed.
The system of process iron content greasy filth according to embodiments of the present invention directly mixes pressure ball refining using iron content greasy filth and breeze
Ferrum, can be prevented effectively from iron content greasy filth blast furnace ironmaking process and coking problem occur.
By rotary hearth furnace and combustion gas are melted what point stove was produced in the system of process iron content greasy filth according to embodiments of the present invention
After high-temperature flue gas and air direct heat transfer, can abundant recovered flue gas heat preheated air, effectively improve the diarrhea of heat type of whole process
With rate.
In another aspect of the invention, the present invention proposes a kind of system using above-mentioned process iron content greasy filth and processes and contains
The method of ferrum greasy filth.Embodiments in accordance with the present invention, with reference to Fig. 5, the method includes：
S100：Mixing during iron content greasy filth is supplied to extraction equipment with solvent carries out extraction processing
In the step, mixing during iron content greasy filth is supplied to extraction equipment with solvent carries out extraction processing, to be contained
Oil solvent and oil-containing solids residue.Thus, by being processed to iron content greasy filth using extraction equipment, it is possible to achieve iron content greasy filth
The recovery of middle oil product, and the generation of coking phenomenon during subsequent smelting can be prevented effectively from, thereby may be ensured that system is steady
Fixed operation.Specifically, after iron content greasy filth being mixed with a certain amount of solvent, it is sufficiently stirred for making iron content greasy filth fully connect with solvent
Touching, while certain heat (temperature 50-80 degree Celsius) is provided in extraction equipment, improves oil in iron content greasy filth in a solvent
Dissolubility, 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 selected to the particular type of solvent according to actual needs, as long as can realize the oil extraction in iron content greasy filth
Out.
S200：Mixed during oil-containing solids residue is supplied to mixing arrangement with coal dust, Iron Ore Powder and binding agent
In the step, oil-containing solids residue and coal dust, Iron Ore Powder and binding agent that above-mentioned extract and separate is obtained supply to
Mixed in mixing arrangement, to obtain mixed material.Inventor has found, by iron content isolated for extraction process is solid
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 as to
Cost of material can be reduced, and by adding Iron Ore Powder, can directly reduce the viscosity of iron content solid residue, so as to behind
Raw material can be prevented effectively from continuous processing procedure sticks to equipment surface.It should be noted that those skilled in the art can root
Select according to the particular type being actually needed to binding agent, for example, can adopt bentonite.
According to one embodiment of present invention, the mixed proportion of oil-containing solids residue and coal dust, Iron Ore Powder and binding agent is simultaneously
It is not particularly limited, those skilled in the art can be selected according to actual needs, according to the present invention is embodied as
Example, oil-containing solids residue and coal dust, Iron Ore Powder and binding agent are mixed according to following ratio, and the addition of binding agent is Iron Ore Powder
3～15%, the addition of oil-containing solids residue is the 15～30% of Iron Ore Powder, controls C in mixed material by coal dustmol/
OmolFor 1.1～1.3.
S300：Pressure ball process is carried out during mixed material is supplied to press ball device
In the step, during mixed material obtained above is supplied to press ball device, pressure ball process is carried out, to be mixed
Close pelletizing.Thus, it is possible to the contact area between each component is dramatically increased, so as to improve ferrum reduction efficiency.
According to one embodiment of present invention, the particle diameter of mixing pelletizing is not particularly restricted, and those skilled in the art can
To be selected according to actual needs, according to a specific embodiment of the present invention, the particle diameter that mixes pelletizing can be 5～
50mm.Specifically, the mixed material of mix homogeneously is carried out mixing pressure ball process, obtains elliposoidal thing of the particle diameter for 15-50mm
Material.During whole production run, when elliposoidal material particular diameter is too small, during pressure ball, power consumption substantially increases, and balling-up is obvious
Difficulty, and work as elliposoidal material particular diameter excessive after, during back segment pretreatment and rotary hearth furnace reduction, heat transfer effect significantly drops
Low, the thermal efficiency is substantially deteriorated.Iron content greasy filth be can achieve by pressure ball to be fully contacted with Iron Ore Powder, in back segment preprocessing process
Heat treatment after, the organic component in oil-containing solids residue is evaporated in gaseous form, increased charcoal and the Iron Ore Powder of residual
Contact area, when its entrance rotary hearth furnace carries out reduction process, improves the reduction efficiency of ferrum.And it is effectively prevented from iron content oil
Mud occurs coking problem in rotary hearth furnace.On the other hand, by oil-containing solids residue is mixed pressure ball with Iron Ore Powder, can be effective
Adhere in the reactor when avoiding oil-containing solids residue because directly processing, it is difficult to remove.Balling process is in addition to using pressure ball
Optional disk spin, obtains spheroidal material of the particle diameter for 5-20mm.
S400：Process is dried during mixing pelletizing is supplied to drying device
In the step, during mixing pelletizing obtained above is supplied to drying device, process is dried, to be done
Dry pelletizing.Thus, it is possible to significantly improve the reduction efficiency of ferrum during sequential reduction.
According to still a further embodiment, the moisture content for drying in pelletizing is not particularly restricted, art technology
Personnel can be selected according to actual needs, and according to a specific embodiment of the present invention, the moisture content for drying in pelletizing can
To be not higher than 0.5wt%.Thus, it is possible to improve the reduction efficiency of ferrum during sequential reduction.Specifically, Celsius in 140-300
Under the baking temperature of degree, after drying, in material, moisture content is down to below 0.5wt%, and material is after dried,
The removing of moisture can dredge the aperture of ball interior, while improving the mechanical strength of spheroid, be conducive to material to enter rotary hearth furnace
After reduce more abundant, whole drying time can be controlled in 10-50min.
S500：To dry during pelletizing is supplied to rotary hearth furnace carries out reduction treatment
In the step, obtained above drying during pelletizing is supplied to rotary hearth furnace is carried out reduction treatment, to be reduced
Flue gas and reduction solid product.Thus, by pelletizing will be dry containing iron content solid residue and coal dust, Iron Ore Powder and binding agent
Reduction treatment is carried out in supplying to rotary hearth furnace, due to fully having reclaimed the oil product in iron content greasy filth in above-mentioned steps, is therefore existed
Coking phenomenon will not be produced in the reduction process, thereby may be ensured that the stable operation of rotary hearth furnace.
According to one embodiment of present invention, the temperature of reduction treatment is not particularly restricted, and those skilled in the art can
To be selected according to actual needs, according to a specific embodiment of the present invention, in rotary hearth furnace, the temperature control of burner exists
1000～1400 degrees Celsius, the reduction treatment time is 30～120 minutes.Thus, it is possible to improve the reduction efficiency of ferrum further.
According to still a further embodiment, the temperature of reduction solid product can be 900～1100 degrees Celsius.By
This, the reduction solid product heat is delivered to be carried out melting office reason in molten point of stove of follow-up combustion gas, can significantly reduce subsequently molten dividing
Journey energy consumption.Specifically, the pelletizing heat that dries obtained above is delivered in rotary hearth furnace, it is whole that rotary hearth furnace surrounding is disposed with many burners
Individual burner hearth provides heat, burn outer flame directly with dry pelletizing and contact, burner temperature control at 1000-1400 degree Celsius, and also
Former time 30-120min, the pelletizing temperature after completing to reduce is 900-1100 degree Celsius.Adopt per root burner for rotary hearth furnace heat supply
With autonomous control system, each reaction zone temperature of precise control rotary hearth furnace is in temperature required scope.Due to entering to turn bottom to material
Before stove reduction, in advance oil-containing solids residue is premixed pressure ball with Iron Ore Powder, after drying, in raw material, moisture is removed, dredge
The aperture of logical ball interior, increases dried residual charcoal with the contact area between breeze, while the mechanical strength of spheroid is improved,
Therefore strengthen reactivity between the two after entering rotary hearth furnace, improve the response rate of metallic ore.Secondly, whole process solid product
All using hot charging, reduce the energy consumption in ironmaking processes further.3rd, added in raw material in mixed process according to testing result
Enter appropriate raw coal powder, after making dry distilling, charcoal is with weight of iron ratio between 1.2-1.5, and excessive charcoal can during rotary hearth furnace reduction
There is provided appropriate heat, it is possible to decrease rotary hearth furnace gas consumption, increase economic efficiency.
S600：Carry out melting office reason during reduction solid product is supplied to molten point of stove of combustion gas
In the step, carry out melting office reason during above-mentioned obtained reduction solid product is supplied to 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 ferrum element in iron content greasy filth.
According to one embodiment of present invention, the molten point in-furnace temperature of combustion gas is not particularly restricted, those skilled in the art
Can be selected according to actual needs, according to a specific embodiment of the present invention, can be controlled using regenerator burner
Molten point of in-furnace temperature of combustion gas is 1300～1600 degrees Celsius.Thus, it is possible to significantly improve the separation efficiency of molten iron and slag.
Specifically, above-mentioned rotary hearth furnace reduction is obtained solid product heat to deliver in 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 using heat-storage type burner mode of heating, control in-furnace temperature exists
Between 1300-1600 degree Celsius.Point stove both sides being melted in combustion gas and being provided with the burner to spraying, heat accumulating type combustion is realized using reversing combustion
Burn, each burner can independent control.
The system of process iron content greasy filth according to embodiments of the present invention by using extraction equipment to iron content greasy filth at
Reason, 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 bonding
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 pass through
Add Iron Ore Powder, can directly reduce the viscosity of iron content solid residue, can be prevented effectively from processing procedure so as to continue behind
Raw material sticks to equipment surface, while iron content solid residue and coal dust, Iron Ore Powder and binding agent are carried out mixed pelletizing confession
To reduction treatment is carried out to rotary hearth furnace, due to fully having reclaimed the oil product in iron content greasy filth in above-mentioned steps, therefore at this
Coking phenomenon will not be produced in reduction process, and office reason is melted by molten point of stove of rotary hearth furnace reduction and combustion gas, effectively can return
Receive the ferrum element in iron content greasy filth.Thus, iron content greasy filth can be realized while system stable operation is ensured using the system
Middle oil product and the recycling of ferrum element.
With reference to Fig. 6, the method for process iron content greasy filth according to embodiments of the present invention is further included：
S700：To contain during oil solvent is supplied to oil product segregation apparatuss carries out separating treatment
In the step, will contain during oil solvent is supplied to oil product segregation apparatuss carries out separating treatment, to obtain oil product and molten
Agent, and solvent return S100 is carried out extraction processing.Thus, by 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 process iron content greasy filth according to embodiments of the present invention is further included：
S800：Changed by least one of reduction flue gas and molten point of flue gas and during air is supplied to heat accumulating type air preheater
Heat
In the step, enter by least one of reduction flue gas and molten point of flue gas and during air is supplied to heat accumulating type air preheater
Row heat exchange, in order to flue gas after air and heat exchange is obtained after heat exchange, and burning air after heat exchange being back 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 waste heat of molten point of flue gas in point stove is melted in flue gas or/and combustion gas, and the waste heat of recovery is used for carrying out air the pre-heat treatment, and
Air after heat exchange is supplied and is used as combustion-supporting gas to the burner of rotary hearth furnace and/or the molten point stove of combustion gas, such that it is able to effectively carry
The heat utilization efficiency of high whole process, and reduce rotary hearth furnace and/or molten point of stove energy consumption of combustion gas.Specifically, after heat exchange air temperature
Not higher than 650 degrees Celsius of degree.
S900：Purified treatment is carried out during flue gas after heat exchange is supplied to smoke eliminator
In the step, during flue gas after heat exchange is supplied to the smoke eliminator, purified treatment is carried out, to obtain net
Change flue gas.Specifically, flue gas after heat exchange is removed after smoke eliminator qualified discharge after nitrogen sulfide.
With reference to Fig. 8, the method for process iron content greasy filth according to embodiments of the present invention is further included：
S1000：At least one of reduction flue gas and molten point of flue gas are back to drying device in S400 be situated between 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 dry run energy consumption.
Below with reference to specific embodiment, present invention is described, it should be noted that these embodiments are only to describe
Property, and limit the present invention never in any form.
Embodiment
The iron content greasy filth for being provided by Anshan iron and steel plant, measure which to fix carbon content by Industrial Analysis is 10 ± 1wt%, and volatile matters contain
Amount is more than 50wt%, and lime-ash (with ferrum component based on) content is as 39 ± 0.8wt%.With reference to Fig. 9, by lighter hydrocarbons solvent and iron content greasy filth
It is 8 according to mass ratio:1 supply to extraction equipment in mixed, control temperature be 75 degrees Celsius, at such a temperature, stir molten
Agent cleans 30 ± 5min with iron content greasy filth to clean iron content greasy filth, and the oil-containing for obtaining containing oil solvent and oil content less than 4wt% is solid
Body residue；Separating treatment is carried out in obtaining supplying to oil product segregation apparatuss containing oil solvent, oil product and lighter hydrocarbons solvent is obtained, and
It is continuing with during isolated solvent is supplied to extraction equipment；Then by the oil-containing solids residue for obtaining 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 breeze amount, the interpolation of coal dust
Amount is to control C in mixed materialmol/OmolFor 1.2, the addition of methylcellulose is the 5 ± 0.5% of mixed material, and this is mixed
Compound supply to mixing arrangement in mix homogeneously, obtain mixed material, in then mixed material being supplied to press ball device suppress
Become particle diameter for the elliposoidal mixing pelletizing of 25 ± 2mm；The mixing pelletizing for suppressing is delivered to drying device by induction system and is carried out
Dried, mixing pelletizing is dried under 200 ± 10 degrees Celsius, and drying time controls in 10min；By gained dry mixed
Pelletizing is sent in rotary hearth furnace, controls the temperature of burner hearth, rotary hearth furnace entrance fire box temperature by controlling the flow of each burner
Control is at 1000 degrees Celsius, and centre is often separated by a burner, and corresponding temperature increases by 60 ± 20 degrees Celsius, and it is nearer to separate out mouth
Five burner temperature reduce successively, reduce by 50 ± 30 degrees Celsius successively per an adjacent burner temperature.Pelletizing is finally dry
There is reduction reaction at 1000～1100 degrees Celsius, obtain solid product and reduction flue gas is reduced, then that the reduction for obtaining is solid
Body product heat is sent in molten point of stove of combustion gas, and under 1550 ± 15 degrees Celsius, ferrum is fused into molten iron, at the same obtain molten point of flue gas and
Residue, the reduction flue gas for then obtaining rotary hearth furnace and combustion gas are melted the molten point flue gas for obtaining in point stove and are supplied to heat accumulating type air preheater
In carry out heat exchange, obtain after heat exchange flue gas after air and heat exchange, and air after heat exchange be back to the burner in rotary hearth furnace and combustion
Use as combustion-supporting gas in molten point of stove of gas；The reduction flue gas for obtaining in rotary hearth furnace and combustion gas are melted the molten point of flue gas for obtaining in point stove
At least one of return drying device use as dried medium.And enter in supplying flue gas after heat exchange to smoke eliminator
Row purified treatment, in order to it is 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 specific features, structure, material or the spy for describing with reference to the embodiment or example
Point is contained at least one embodiment or the example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be in office
Combined in one or more embodiments or example in an appropriate manner.Additionally, in the case of not conflicting, the skill of this area
The feature of the different embodiments described in this specification or example and different embodiments or example can be tied by art personnel
Close and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (10)
1. a kind of process iron content greasy filth system, it is characterised in that include：
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
Export 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
State mixed material outlet to be connected；
Drying device, the drying device has mixing pelletizing entrance and dries pelletizing outlet, the mixing pelletizing entrance and institute
State mixing pelletizing outlet to be connected；
Rotary hearth furnace, the rotary hearth furnace is exported with pelletizing entrance, reduction exhanst gas outlet and reduction solid product is dry, and described
Burner is disposed with rotary hearth furnace, described dry pelletizing entrance with described dry pelletizing outlet be connected；
Molten point of stove of combustion gas, the molten point stove of the combustion gas has solid reduction product entrance, melts a point 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 segregation apparatuss, the oil product segregation apparatuss have 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 air intake, high-temperature flue gas entry, exhanst gas outlet and changes after heat exchange
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, after the heat exchange, at least one of molten point of stove of air outlet slit and the burner and the combustion gas is connected；
Smoke eliminator, the smoke eliminator has smoke inlet and purifying smoke outlet, the smoke inlet and institute
After stating heat exchange, exhanst gas outlet is connected.
4. the system according to any one of claim 1-3, it is characterised in that the reduction exhanst gas outlet and described molten point
At least one of exhanst gas outlet is connected with the drying device.
5. the method that the system any one of a kind of employing claim 1-4 processes iron content greasy filth, it is characterised in that bag
Include：
(1) mixing in supplying iron content greasy filth and solvent to the extraction equipment carries out extraction processing, to obtain containing oil solvent
With oil-containing solids residue；
(2) mixed in supplying the oil-containing solids residue to the mixing arrangement with coal dust, Iron Ore Powder and binding agent, with
Just mixed material is obtained；
(3) in supplying the mixed material to press ball device, pressure ball process is carried out, to obtain mixing pelletizing；
(4) in supplying the mixing pelletizing to the drying device, process is dried, to obtain drying pelletizing；
(5) described drying during pelletizing is supplied to the rotary hearth furnace is carried out reduction treatment, to obtain reducing flue gas and to reduce solid
Body product；
(6) carry out melting office reason in supplying the reduction solid product to molten point of stove of the combustion gas, so as to obtain molten divide a flue gas,
Molten iron and residue.
6. method according to claim 5, it is characterised in that further include：
(7) by described supply to the oil product segregation apparatuss containing oil solvent in carry out separating treatment, to obtain oil product and solvent,
And solvent return to step (1) is carried out the extraction processing.
7. the method according to claim 5 or 6, it is characterised in that further include：
(8) at least one of the reduction flue gas and the molten point of flue gas being supplied to the heat accumulating type air preheater with air
Heat exchange is carried out, in order to flue gas after air and heat exchange is obtained after heat exchange, and air after the heat exchange is back to described in step (5)
At least one of molten point of stove of the combustion gas in burner and step (6) in rotary hearth furnace is used as combustion-supporting gas；
(9) in supplying flue gas after the heat exchange to the smoke eliminator, purified treatment is carried out, in order to it is purified flue gas.
8. the method according to any one of claim 5-7, it is characterised in that further include：
(10) at least one of the reduction flue gas and the molten point of flue gas are back to the work of drying device described in step (4)
Use for dried medium.
9. the method according to any one of claim 5-8, it is characterised in that in step (2), by the oil-containing solids
Residue and the coal dust, the Iron Ore Powder and the binding agent mix according to following ratio, and the addition of the binding agent is institute
The 3～15% of Iron Ore Powder are stated, the addition of the oil-containing solids residue is the 15～30% of the Iron Ore Powder, the coal dust adds
Amount is to control C in the mixed materialmol/OmolFor 1.1～1.3；
Optional, in step (3), the particle diameter of the mixing pelletizing is 5～50mm；
Optional, in step (4), the temperature of the dried is 140～300 degrees Celsius, and the time is 10～50 minutes；
Optional, in step (4), the moisture content for drying in pelletizing is not higher than 0.5wt%.
10. the method according to any one of claim 5-9, it is characterised in that in step (5), in the rotary hearth furnace
The temperature control of burner is at 1000～1400 degrees Celsius, and the reduction treatment time is 30～120 minutes；
Optional, in step (5), the temperature of the reduction solid product is 900～1100 degrees Celsius；
Optional, in step (6), control the molten point in-furnace temperature of the combustion gas to take the photograph for 1300～1600 using regenerator burner
Family name's degree；
Optional, in step (8), not higher than 650 degrees Celsius of the temperature of air after the heat exchange.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611078598.1A CN106435082A (en) | 2016-11-29 | 2016-11-29 | System and method for treating iron-containing oily sludge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611078598.1A CN106435082A (en) | 2016-11-29 | 2016-11-29 | System and method for treating iron-containing oily sludge |
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Cited By (1)
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| 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 |
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| CN206279231U (en) * | 2016-11-29 | 2017-06-27 | 北京神雾环境能源科技集团股份有限公司 | The system for processing iron content greasy filth |
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| CN103468939A (en) * | 2013-09-06 | 2013-12-25 | 鞍钢股份有限公司 | Cold press palletizing bonding agent and preparation method thereof |
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