CN104071964B - Steel rolling oil sludge drying method and device - Google Patents
Steel rolling oil sludge drying method and device Download PDFInfo
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- CN104071964B CN104071964B CN201310103096.XA CN201310103096A CN104071964B CN 104071964 B CN104071964 B CN 104071964B CN 201310103096 A CN201310103096 A CN 201310103096A CN 104071964 B CN104071964 B CN 104071964B
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- greasy filth
- oil sludge
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Abstract
A steel rolling oil sludge drying method and a device are disclosed. According to the method and the device, the steel rolling oil sludge is installed into an oil sludge storage bin, the oil sludge in the storage bin is fed into a screw conveyer through a feeder and is fed to a material inlet of an intensive mixer through the screw conveyer, the adhesive oil sludge is pushed to move along the inner barrel wall of the intensive mixer by scraper type blades of the intensive mixer, the outer barrel wall of the intensive mixer is heated by external heat, the heated outer barrel wall transfers heat to the inner barrel wall, the oil sludge that is dug by the scraper type blades, falls and is pushed to the discharging end is heated by the inner barrel wall, the temperature of the inner barrel wall is controlled to be 280-300 DEG C that is lower than the boiling point of oil in the oil sludge, the temperature of a steam outlet is controlled to be 120-130 DEG C, and a condenser is disposed at the steam outlet to recover water. The steel rolling oil sludge is dried by the method and the device, and therefore problems of secondary pollution, nonuniform drying, discontinuous production, long oil sludge treatment process for dehydration firstly and oil removal secondly, and high production cost, which are common in oil sludge drying technologies at present, are overcome.
Description
Technical field
The invention belongs to Metallurgical Solid Wastes recycling field, more particularly, to a kind of drying device of steel rolling greasy filth and side
Method.
Background technology
Iron and steel enterprise produces every year substantial amounts of ion dust mud contaning, according to pertinent literature report often produce one ton of steel will produce 10 ~
The dirt mud of 15kg, wherein part recycle in enterprises, and some could profit after processing because of the needs that contain harmful ingredients
With or store up discarded, not only waste of resource but also to environment.If the iron scale of billet surface when steel rolling and continuous casting is in machine
Can peel off in the presence of tool power and impact of water, import whirling well after pouring trench, thinner iron scale is finally washed into advection sedimentation
Pond.Iron scale in sedimentation basin is because being mixed into milling train oil, gear oil, hydraulic oil and roller-way oil and the greasy filth that is otherwise known as.Oil after drying
Mud all iron content reaches 70% ~ 72%, and a such as higher greasy filth annual production of Large Steel ironworks Iron grade reaches 30,000 tons.But contain to this
There are about 25% ~ 33% water and the greasy filth of about 1% ~ 3% oil to be difficult to harmless resource utilization utilization, how to reclaim the iron resource in greasy filth
With avoiding greasy filth, the attention of manufacturing enterprise is caused to the pollution of environment.
There is presently no preferable greasy filth Application way, traditional oil-sludge treatment method is as follows：（1）Roasting method：In shaft furnace
Or in rotary kiln, carry out roasting, although the method can obtain the iron scale that can use, the substantial amounts of energy, production process to be consumed
The oil smoke of middle generation can cause heavier secondary pollution to air；（2）The way of distillation：The Chinese patent of Application No. 03206650.3
" a kind of device systems processing steel rolling oil-containing iron scale ", the method with distillation will be evaporated to the moisture in greasy filth and oil content, returns
Receive iron scale and oil content, but the method will consume the substantial amounts of energy, processing cost is higher；（3）Extraction：The method adopts chemical drugs
Oil in iron scale is extracted and separates and recovers by agent, and the major defect of this method is to need outer adding medicine, increases cost,
And it is also easy to produce new water pollution；（4）Recycle method as raw materials for sintering：The less greasy filth of part oil-containing will be placed in greasy filth
Rickyard simultaneously drenches part moisture, allocates sintering deposit into improve the grade of sintering deposit, but the method can cause rickyard environment dirty
Dye, can not make again greasy filth obtain all of, more exist greasy filth in loose sinter mixture during exhausting oil smoke condensation hang wind
Machine impeller and make blower fan lose dynamic balancing and low-flash oil hidden danger leading to fire incident on fire.
Make steel rolling greasy filth as ironmaking or steelmaking feed, typically the greasy filth of moisture content up to 25% ~ 33% will be done
Dry process, because water content is too high will be unable to make it mix with other raw materials；In greasy filth in production process also to be avoided
Oily pollution environment.Because containing oil content in greasy filth, greasy filth is piled up several days and will be produced unpleasant peculiar smell, and greasy filth is pulled out from sedimentation basin
After must process in time.
Patent（US5964045）Propose to be passed through 250 DEG C of heat smoke in rotary kiln and dehydration is dried to greasy filth, then adopt
Under the conditions of 300 DEG C, vacuum de-oiling is carried out to greasy filth with two sections of vacuum dryers.The method easily makes waste oil and water steam simultaneously
Send out, cause waste oil bonding deduster, impact deduster runs and reduces dust removing effects；The oil-containing iron scale after dehydration can not be made direct
It is obtained by, vacuum de-oiling makes production cost increase.
The Chinese patent of Publication No. CN1579972A, " processing method of steel rolling oil-containing iron scale and device systems " report will
The disk dryer that external heat sent into by greasy filth is dehydrated, and the oil-containing iron scale after dehydration is admitted to distilling apparatus again and is taken off
Oil.The method it cannot be guaranteed that greasy filth uniform drying, also will to dried greasy filth further de-oiling, complex process, greasy filth is located in advance
Reason is relatively costly.
The Chinese patent of Application No. 200920179132.X：" realize steel rolling greasy filth three phase separation and reclaim brown iron oxide
Equipment with recycle oil " describes and with the interior external heat rotating cylinder having fixing scraper plate, steel rolling greasy filth is dried, dried oil
Mud enters de-oiling tower and continues de-oiling.Although the method make use of the heat smoke of sintering plant as thermal source, need to prepare special outer
Heated drums, the transmission of greasy filth in dry run is also had any problem, but also need to be equipped with de-oiling tower it is impossible to make dried greasy filth straight
Connect and be obtained by, production cost is higher.For the presence secondary pollution generally created in existing steel rolling greasy filth patented technology and elder generation
Problem that again de-oiling could utilize steel rolling greasy filth is dried.
Content of the invention
The present invention is directed to above-mentioned iron and steel enterprise and produces substantial amounts of ion dust mud contaning every year it is impossible to directly process utilizes or heap reservation or revocation
Abandon, not only waste of resource but also the problems such as to environment, propose a kind of new steel rolling greasy filth drying means and its device, it
It is by the viscosity greasy filth in exothermic heating strong screw conveyer, greasy filth is heated evenly, conveys the traditional greasy filth of smooth solution
Drying means has that greasy filth is difficult to uniformly be dried and convey.By controlling baking temperature simply to slough water in greasy filth
Do not slough the oil in greasy filth, the greasy filth direct utilization after dehydration.So avoid conventional distillation and go oil removing respectively
Water in mud and the oil complicated technology to greasy filth utilization again.Three it is that this method production process is continuous, drying process is short, be dried to
This low, greasy filth dry run environmental protection, after being dried, the greasy filth of not de-oiling is easy to be mixed with other raw materials and is used directly, such as
Prepare the compound of the cooling agent of pelletizing or steel-making with it.
Steel rolling greasy filth in conveying worm by heated sealed, heating-up temperature more than the boiling point of water, oil boiling point below.
Concrete drying means is as follows：
Steel rolling greasy filth is loaded into greasy filth feed bin, and the greasy filth in feed bin sends into conveying worm through blanking device, by helical feed
The feeding mouth of intensive mixer sent into by machine, and viscosity greasy filth is pushed away along intensive mixer inner tube wall by the scraper type blade of intensive mixer
Enter, exothermic heating intensive mixer outer tube wall, heat is passed to inner tube wall by the outer tube wall being heated, inner tube wall heats by scraper type oar
Leaf digs the greasy filth falling and being advanced to discharge end, controls inner core wall temperature to be 280 ~ 300 DEG C, this temperature is less than in greasy filth
The boiling point of oil, steam exit temperature controls at 120 ~ 130 DEG C, and steam outlet has condenser to reclaim moisture.
Steel rolling greasy filth drying device structure of the present invention is, the feeding mouth phase of the feed opening of greasy filth feed bin and conveying worm
Even, the feeding mouth of the discharging opening of the conveying worm strong screw conveyer indoor with being sealed in flue gas is connected, and strong spiral is defeated
The discharging opening sending machine is connected with the feeding mouth that greasy filth conveying worm is dried, smoke chamber bottom and top set respectively smoke inlet and
Exhanst gas outlet, the discharge end top of conveying worm is connected with condenser by steam pipe.
Advantages of the present invention and effect are（1）Using controlling baking temperature so that the water in greasy filth is separated with oil, without right
The further de-oiling of greasy filth just can be used to dried greasy filth；（2）Passed using strong screw conveyer scraper type blade
Defeated viscosity greasy filth, makes viscosity greasy filth not bonding barrel, and the transmission of viscosity greasy filth is smooth, and greasy filth is back and forth dug to be done while falling
Dry, greasy filth uniform drying, produce continuous；（3）Using heat smoke external heat conveying worm outer tube wall, make use of waste heat, significantly
Degree reduces drying cost；（4）Condensed with condenser and reclaim dry steam, make steam free from environmental pollution, so that water resource is obtained again
Reclaim.By the inventive method and its device, steel rolling greasy filth is dried, solves in existing greasy filth dry technology and generally deposit
Secondary pollution, uneven drying, produce discontinuous, be first dehydrated that de-oiling again, greasy filth pretreatment process are long, production cost is high
Problem.
Brief description
Accompanying drawing is the structural representation of the present invention.
Wherein 1 greasy filth feed bin, 2 feed bin lower part helical conveyers, 3 smoke chambers, semi-finals wrench of a force system conveyer, 5 dry oil
Mud conveying worm, 6 smoke inlets, 7 exhanst gas outlets, 8 steam condensers
Specific embodiment
Below in conjunction with the accompanying drawings the present invention is elaborated：
As illustrated, the entering of the feed opening of steel rolling greasy filth drying device structure greasy filth feed bin 1 of the present invention and conveying worm 2
Material mouth is connected, and the discharging opening of conveying worm 2 is connected with the feeding mouth of the strong screw conveyer 4 being sealed in smoke chamber 3, by force
The discharging opening of wrench of a force system conveyer 4 is connected with the feeding mouth that greasy filth conveying worm 5 is dried, and smoke chamber 3 bottom and top are respectively
If smoke inlet 6 and exhanst gas outlet 7, the discharge end top of conveying worm 4 is connected with condenser 8 by steam pipe.
Concrete technology flow process is：Steel rolling greasy filth is loaded into greasy filth feed bin, and the greasy filth in feed bin sends into spiral transferring through blanking device
Send machine, sent into the feeding mouth of intensive mixer by conveying worm, viscosity greasy filth is by the scraper type blade of strong screw conveyer
Along the propulsion of intensive mixer inner tube wall, exothermic heating strong screw conveyer outer tube wall, heat is passed to interior by the outer tube wall being heated
Barrel, the greasy filth falling and being advanced to discharge end is dug in inner tube wall heating by scraper type blade, controls inner core wall temperature to be 280
~ 300 DEG C, the boiling point of oil that this temperature is less than in greasy filth, make it substantially non-volatile, and moisture is formed by evaporation to steam, this temperature
Less than the boiling point of the oil in greasy filth, steam exit temperature controls at 120 ~ 130 DEG C, and steam outlet has condenser to reclaim moisture,
Do not affect environment；Greasy filth is made to be dried by uniformly continuous by above procedure.
Embodiment 1
Greasy filth is pulled out with grab bucket from sedimentation basin, drenches and remove surface moisture, reinstall in the means of transport of leakproof facility,
Greasy filth is discharged in feed bin 1, the greasy filth in feed bin 1 sends into the feeding mouth of strong screw conveyer 4 through conveying worm 2.Greasy filth
By the scraper type propeller blade of strong screw conveyer 4, it is advanced into discharging opening along strong screw conveyer inner tube wall.Strong spiral
The heat smoke that conveyer inner tube wall is sprayed by heat smoke entrance 6 heats, and at 300 DEG C, this temperature is less than oil to inner tube wall temperature control
The boiling point of oil in mud.Heat smoke after heating is by heat smoke outlet 7 discharge.The vapor (steam) temperature of discharging opening controls at 130 DEG C, greasy filth
The steam evaporating is condensed by steam condenser 8 and collects moisture.Strong screw conveyer 4 is sealed in smoke chamber 3, in case
Only flue gas or peculiar smell leak.Dried greasy filth is discharged into by the discharging opening of strong screw conveyer 4 and greasy filth conveying worm 5 is dried
Feeding mouth, then be discharged to emptying point by greasy filth conveying worm 5 is dried.Greasy filth natural cooling after drying, as preparing blast furnace oxygen
The raw material of pellet.
Embodiment 2
Greasy filth is pulled out with grab bucket from sedimentation basin, drenches and remove surface moisture, reinstall in the means of transport of leakproof facility,
Greasy filth is discharged in feed bin 1, the greasy filth in feed bin 1 sends into the feeding mouth of strong screw conveyer 4 through conveying worm 2.Greasy filth
By the scraper type propeller blade of strong screw conveyer 4, it is advanced into discharging opening along strong screw conveyer inner tube wall.Strong spiral
The heat smoke that conveyer inner tube wall is sprayed by heat smoke entrance 6 heats, and at 280 DEG C, this temperature is less than oil to inner tube wall temperature control
The boiling point of oil in mud.Heat smoke after heating is by heat smoke outlet 7 discharge.The vapor (steam) temperature of discharging opening controls at 120 DEG C, greasy filth
The steam evaporating is condensed by steam condenser 8 and collects moisture.Strong screw conveyer 4 is sealed in smoke chamber 3, in case
Only flue gas or peculiar smell leak.Dried greasy filth is discharged into by the discharging opening of strong screw conveyer 4 and greasy filth conveying worm 5 is dried
Feeding mouth, then be discharged to emptying point by greasy filth conveying worm 5 is dried.Greasy filth natural cooling after drying, cold as preparation steel-making
But the raw material of agent.
Claims (2)
1. a kind of steel rolling greasy filth drying means it is characterised in that steel rolling greasy filth in strong screw conveyer by heated sealed, plus
Hot temperature more than the boiling point of water, oil boiling point below；
Concrete drying means is as follows：
Steel rolling greasy filth is loaded into greasy filth feed bin, and the greasy filth in feed bin sends into conveying worm through blanking device, is sent by conveying worm
Enter the feeding mouth of intensive mixer, viscosity greasy filth is pushed away along intensive mixer inner tube wall by the scraper type blade of strong screw conveyer
Enter, exothermic heating strong screw conveyer outer tube wall, heat is passed to inner tube wall by the outer tube wall being heated, inner tube wall heats by scraper
Formula blade digs the greasy filth falling and being advanced to discharge end, controls inner core wall temperature to be 280～300 DEG C, this temperature is less than oil
The boiling point of the oil in mud, steam exit temperature controls at 120 DEG C～130 DEG C, and steam outlet has condenser to reclaim moisture.
2. the device used by a kind of a kind of as claimed in claim 1 steel rolling greasy filth drying means is it is characterised in that greasy filth feed bin
(1) feed opening is connected with the feeding mouth of conveying worm (2), the discharging opening of conveying worm (2) be sealed in smoke chamber (3)
The feeding mouth of interior strong screw conveyer (4) is connected, the discharging opening of strong screw conveyer (4) with greasy filth helical feed is dried
The feeding mouth of machine (5) is connected, and smoke chamber (3) bottom and top set smoke inlet (6) and exhanst gas outlet (7), strong spiral respectively
The discharge end top of conveyer (4) is connected with condenser (8) by steam pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310103096.XA CN104071964B (en) | 2013-03-27 | 2013-03-27 | Steel rolling oil sludge drying method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310103096.XA CN104071964B (en) | 2013-03-27 | 2013-03-27 | Steel rolling oil sludge drying method and device |
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| Publication Number | Publication Date |
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| CN104071964A CN104071964A (en) | 2014-10-01 |
| CN104071964B true CN104071964B (en) | 2017-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310103096.XA Active CN104071964B (en) | 2013-03-27 | 2013-03-27 | Steel rolling oil sludge drying method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115183554B (en) * | 2022-09-09 | 2022-11-29 | 江苏先锋干燥工程有限公司 | Drum-type conveyor and dryer using same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1488591A (en) * | 2002-10-10 | 2004-04-14 | 中国石油化工股份有限公司 | Oil-containing sludge treating method |
| CN1579972A (en) * | 2003-08-01 | 2005-02-16 | 首钢总公司 | Method and equipment system for treating oil-containing iron scale for steel rolling |
| CN102840587A (en) * | 2012-09-03 | 2012-12-26 | 林秀梅 | Compound method and system for directly recovering heat inside and outside rotary kiln |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101759344B (en) * | 2010-01-22 | 2012-02-29 | 西安长庆科技工程有限责任公司 | Oil field oil sludge drying treatment combined device and oil sludge drying treatment technique |
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- 2013-03-27 CN CN201310103096.XA patent/CN104071964B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1488591A (en) * | 2002-10-10 | 2004-04-14 | 中国石油化工股份有限公司 | Oil-containing sludge treating method |
| CN1579972A (en) * | 2003-08-01 | 2005-02-16 | 首钢总公司 | Method and equipment system for treating oil-containing iron scale for steel rolling |
| CN102840587A (en) * | 2012-09-03 | 2012-12-26 | 林秀梅 | Compound method and system for directly recovering heat inside and outside rotary kiln |
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| CN104071964A (en) | 2014-10-01 |
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