CN106147978A - For rolling device and the using method thereof of greasy filth solid-liquid separation and resource reclaim - Google Patents
For rolling device and the using method thereof of greasy filth solid-liquid separation and resource reclaim Download PDFInfo
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- CN106147978A CN106147978A CN201510208018.5A CN201510208018A CN106147978A CN 106147978 A CN106147978 A CN 106147978A CN 201510208018 A CN201510208018 A CN 201510208018A CN 106147978 A CN106147978 A CN 106147978A
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Abstract
The invention discloses a kind of device for rolling greasy filth solid-liquid separation and resource reclaim and using method thereof, comprising: greasy filth storage tank, screw pump, filter press, medial launder, oil pump, three-in-one reactor, distillation column, condenser, edible vegetable oil tank and vacuum pump, described greasy filth storage tank bottom with screw pump and three-in-one reactor respectively connects, described screw pump connects with filter press, described filter press connects with medial launder, described medial launder connects with oil pump, described oil pump connects with the top of three-in-one reactor, the top of described three-in-one reactor is additionally provided with distillation column, described distillation column is connected by condenser with quintessence oil tank, the bottom of described quintessence oil tank is connected with vacuum pump.The invention have the benefit that simple and reliable process, easy and simple to handle, with strong points, safety and environmental protection, suitably promote.
Description
Technical field
The invention belongs to industrial dangerous waste and process the technical field with recycling, relate to rolling greasy filth solid
Liquid separates the method and apparatus with resource reclaim.
Background technology
In System on Rolling Steel, for pursuing at a high speed, efficient, high-quality, reduce power consumption, reduce roll
Abrasion, it is ensured that cooling effect, it is to avoid rust deposite is mixed into, stable rolling load, need to select proper lubrication oil.
Production capacity and the product quality of milling train are had a direct impact by the lubricating system of ROLLING OIL.
For improving the utilization rate of lubricating oil, it is ensured that rolling product quality, modern newly-built for multi-roll mill
Lubricating system all uses the filtration system with automatic back-flushing function.Sendzimir is produced not with France DMS
As a example by rust steel plate strip mill, its work principle of filter is that utilize can the filter element filtering of backwash.ROLLING OIL warp
Mill milling flows into dirty fuel tank after using, and squeezes into after main filter filters through Primary pumps and flows into absolute oil case, dirt
Staying outside filter element, absolute oil case oil pump is squeezed into milling train again and is recycled.When main filter differential pressure is excessive, enter
Become owner of filter-core back-flushing and wash state.The waste oil that backwash produces enters sump oil case natural subsidence, and its top fluid continues
And enter secondary filter.Secondary filter also has backwashing function, and after cascade filtration, dirty oil squeezed into by clear liquid
Case, dirt enters sump oil case.According to producing needs, dirty tank bottoms greasy filth (rolling greasy filth) need to periodically be arranged
Go out, ton output of steel about 2kg.At present, enterprise generally disposes as hazardous waste committee is outer, not only cost
High, and have the hidden danger that resource waste and pollution shifts.
From technological process, rolling greasy filth before discharging lubricating system, will repeatedly experience rolling, filtration,
The process such as backwash, natural subsidence, and multiple by temperature, pressure, air, dust, metal contact etc.
Effect, until forming the discarded rolling greasy filth that cannot continue reuse.Through analyzing, this part rolling greasy filth is with often
The waste lubricating oil of rule (such as used oil, power oil, hydraulic oil, gear oil, bearing oil, pumping fluid, thoroughly
Flat oil etc.) the main distinction as follows: (1) solid concentration up to 5～15%, mostly be superfine metal, white carbon black,
The impurity such as colloid, Colophonium；(2) solid phase particles is with Height of oil emulsifying, natural subsidence difficulty greatly, 1 month
Natural subsidence height less than 10%；(3) color and luster is pitch-dark, and granule carefully glues, and is not suitable for centrifugation and film divides
From；(4) the highest because of rolling temperature, oil ageing degree is less serious, and effective ingredient change is less, warp
After solid-liquid separation and fine particle are removed, supernatant fluid Returning utilization is worth big.
Roll greasy filth for this type of, do not have the relevant report of recycling both at home and abroad, and the lowest normal of solid content
The regeneration technology of rule waste lubricating oil, existing tens of kinds at present, mainly include pickling, few pickling, pickling-free,
The processes such as hydrofinishing (wear an ancient unit of weight, waste lubricant oil regeneration, 2009, Sinopec publishing house).In early days
Sulphuric acid one hargil method technique is simple, can produce qualified base oil, but hargil consumption is big, equipment corrosion is tight
Weight, acid sludge and exhaust emission environment, it has also become method (CN 102657959A, the CN that country prohibites
102295982A etc.)；The clay-filtered method of improved distillation one pickling one, decreases sulfuric acid dosage, but
Base oil yield the highest (CN 102746884A, CN 102304414A etc.)；Hargil high temperature contact anacidity
Technique quality of reclaimed is good, but hargil consumption is more than 10%, and the waste oil response rate is less than 80%, and equipment corrosion is tight
The blocking of weight, boiler tube, operating condition is harsh, therefore the suitability not strong (CN 101597541A, CN87105043
Deng)；Distilling a clay-filtered method of solvent extraction one, this technique is without sulphuric acid, and yield is higher, but to waste oil
The solvent that selectivity is good is difficult to select, and solvent recovery process more complicated (CN 101033433,
CN1044487, CN102517154A etc.)；Molecule rectification process as at present the newest technology of waste oil regenerating,
Make use of molecular still fine vacuum, low-temperature operation a little, it is to avoid oil oxidation, but can not dispose oxygen
Change the waste oil rotten, emulsifying is serious, acid number is higher, and exist abnormal flavour difficulty remove, reclaimed oil color deeper
Problem (CN 101092585A, CN 101319166A, CN 102373108A etc.)；Hydrofinishing work
Skill does not produce the pollution acid sludge of environment, sour water, has the advantages such as environmental protection, response rate height, good product quality,
But reaction condition requires harsher, regenerating unit investment is higher, is suitable only for processing on a large scale (CN
101041789A, CN 1539936, CN102433212A etc.).The above patent, to waste oil regeneration
The residue bed mud of rear generation, how disposal of resources or recovery, the clearest and the most definite concrete ways.
According to " waste mineral oil recycles pollution control technology specification " (HJ 607-2011), waste mineral oil
Regeneration Treatment preferably use sedimentation, filter, distill, refine, Deep Catalytic Cracking process, can be according to mineral waste greasy dirt
Dye degree, reconstituted product prescription select, and encourage to use anacidity waste oil regeneration technology, must not use sulphuric acid
Hargil method regeneration of waste mineral oil.
Use for reference the various regeneration technologies of conventional waste lubricating oil, the solid-liquid separation of rolling greasy filth and resource reclaim, answer
Develop towards technical process environmental protection, operating condition is gentle, the waste oil response rate high, processing cost is relatively low direction.
If physics, chemically or physically-chemical combined means can be used, strengthening rolling greasy filth solid-liquid separation process and
The removal of colloidal particles, and after being separated with bed mud by supernatant fluid, it is separately recovered utilization, this is useless for reclaiming
Oil, save the appropriate disposal of disposal costs, the closed cycle realizing the waste and old oil of cold mill complex and hazardous waste,
All there is positive effect.
Summary of the invention
Harsh, investment and operating cost height, technological process for conventional process for regeneration of waste lubricating oil operating condition
There is acid sludge alkaline residue secondary pollution problems in long, regenerative process, rolls unit waste oil sludge in conjunction with steel and iron industry
Characteristic, a kind of solid-liquid separation rolling greasy filth and its recovery method as resource and device are proposed, its technical characteristic exists
In, first take filter press to realize the biphase initial gross separation of greasy filth solid-liquid；Take again flocculating sedimentation, filter press,
The mode of decompression distillation realizes waste oil regeneration；Finally utilize existing equipment, take solvent extraction, filter press,
The mode of air-distillation realizes waste oil regeneration further and metal substrate sludge reclaims, thus finally realizes rolling greasy filth
The efficient recovery of solid-liquid separation, waste oil regeneration and metals resources.Involved equipment mainly has: greasy filth is store
Groove, screw pump, filter press, medial launder, oil pump, three-in-one reactor, edible vegetable oil filling, condenser,
Distillation column, vacuum pump, pipeline, instrument, valve etc..This set method is simple to operate, process, a line
Multipotency, a tractor serves several purposes, take up an area little, invest low, waste oil regeneration rate is high, can effectively realize rolling consolidating of greasy filth
Liquid separation, waste oil regeneration and the efficient recovery of metals resources.
To achieve these goals, technical scheme is as follows:
A kind of device for rolling greasy filth solid-liquid separation and resource reclaim, comprising: greasy filth storage tank, screw rod
Pump, filter press, medial launder, oil pump, three-in-one reactor, distillation column, condenser, edible vegetable oil tank and
Vacuum pump, described greasy filth storage tank bottom with screw pump and three-in-one reactor respectively connects, described screw pump
Connecting with filter press, described filter press connects with medial launder, and described medial launder connects with oil pump,
Described oil pump connects with the top of three-in-one reactor, and the top of described three-in-one reactor is additionally provided with distillation
Tower, described distillation column is connected by condenser with quintessence oil tank, and the bottom of described quintessence oil tank is connected with vacuum pump
Logical.
Preferably, described greasy filth storage tank is provided with greasy filth storage tank agitator and greasy filth storage tank liquid level
Meter.
Preferably, sidewall and the bottom of described medial launder is installed with medial launder liquidometer and centre respectively
Groove blow-off valve.
Preferably, kettle top, inside, lateral wall and the bottom of described three-in-one reactor is divided
It is not provided with thermometer, reactor agitator, heat exchanging interlayer and reactor drain valve.
Preferably, the top of described distillation column is provided with distillation column thermometer and column pressure meter.
Preferably, top, inside and the sidewall of described quintessence oil tank is respectively equipped with quintessence oil pressure tank
Table, essence liquid level meter for oil tank and quintessence oil tank blow-off valve.
A kind of rolling greasy filth solid-liquid separation based on device of the present invention and its recovery method as resource, it includes
Following steps:
A, collection rolling greasy filth, be placed in greasy filth storage tank, be slowly stirred under 5～20r/min stir speed (S.S.)s,
Greasy filth is made to keep Uniform Flow state；
B, after the liquid level that described greasy filth is raised above the effective liquid storing heights of greasy filth storage tank 1/3rd, start
Screw pump, is delivered to greasy filth in filter press, carries out the initial gross separation that solid-liquid is biphase, obtains solid phase
Greasy filth cake and the waste oil of liquid phase, take out described greasy filth cake, reinstall filter press, by institute after clearing up
State after waste oil enters medial launder, squeeze in three-in-one reactor with oil pump；
C, in three-in-one reactor, described waste oil successively adds flocculation under the stirring of 5～20r/min speed
After agent and alkali liquor, stir speed (S.S.) is improved to 20～40r/min, continuously stirred 20～50min；
D, open screw pump the flocculate obtained in three-in-one reactor is delivered to filter press, filter pressing
After flocculated after supernatant and and flocculation mud cake, open filter press and flocculation mud cake taken out, carry out specially
Door processes；
E, the supernatant after described flocculation is delivered to medial launder, after standing, isolates waste water and fluid,
Open the bottom valve of medial launder, waste water is released；
F, with oil pump, described fluid is squeezed in three-in-one reactor, in kettle heat exchanging interlayer, be passed through condensation
Water, after carrying out decompression distillation 1～3h, obtain residual oil and after " filter pressing-flocculation-decompression distill " process again
Oil generation；
G, described greasy filth cake is mixed homogeneously in medial launder with extractant after, be delivered in filter press,
Obtain solid metallic powder and liquid phase solvent after filter pressing, described liquid phase solvent is entered by medial launder three-in-one
Reactor carries out air-distillation, reclaims extractant and reclaimed oil.
Preferably, during described flocculant is inorganic flocculating agent, organic flocculant and composite flocculation agent
At least one, described inorganic flocculating agent is ferric chloride, iron sulfate, bodied ferric sulfate, Melanteritum, polymerization chlorine
Change at least one in aluminum, aluminum sulfate, Alumen, PAFS；Described organic flocculant is polypropylene
Amide.
Preferably, the addition of described alkali liquor accounts for described process according to the soda material in alkali liquor
Waste oil quality 1～20% calculate, described alkali liquor is sodium hydroxide or the potassium hydroxide solution of 5～30wt%.
Preferably, in the decompression distillation described in step f, collection column bottom temperature 160～320 DEG C,
Tower top temperature 180～280 DEG C, the component of vacuum 5mmHg；In step g, described extractant and oil
It is 1～5:1 that the mass ratio of mud cake controls, and described extractant includes petroleum ether, normal hexane, octane, four chlorinations
One in carbon, acetone, toluene, the component of 60～90 DEG C is collected in air-distillation.
The beneficial effects are mainly as follows:
(1) simple and reliable process: by means of filter press, flocculating sedimentation with subtract/three kinds of routines of air-distillation
Physical chemistry-means, by a line multipotency, a tractor serves several purposes, achieve in waste oil sludge with relatively low cost
Liquid phase oil, the recovery of solid metallic material；Reclaimed oil can return to workshop and reuses, and solid metal powder can
Produce high value added product.
(2) easy and simple to handle: the device that the present invention relates to is all conventional chemical industry equipment, easily operation and dimension
Protect.
(3) with strong points: to be directed to the spy rolling unit waste oil sludge intermittent discharge, periodic collection is disposed
Point, this covering device of exploitation, is designed by function switching intermittent feeding, had both reduced equipment investment and operation
Cost, has fully excavated the potentiality of equipment, has saved again occupation of land.
(4) safety and environmental protection: compared with tradition sulphuric acid-hargil technique, the invention belongs to anacidity operation, without harmful
Gas disengages, and the impact on environment is little.
(5) suitably promoting: the present invention is simple to operate, small investment, low cost, the base oil response rate is high,
Can direct reuse, it is adaptable to the Regeneration Treatment of other kinds waste lubricating oil, there is promotional value.
Accompanying drawing explanation
Fig. 1 is the structural representation for rolling greasy filth solid-liquid separation and the device of resource reclaim of the present invention.
Fig. 2 is the material balance figure of rolling greasy filth solid-liquid separation and resource reclaim；
Fig. 3 is the material balance figure of rolling greasy filth solid-liquid separation and resource reclaim；
Fig. 4 is the material balance figure of rolling greasy filth solid-liquid separation and resource reclaim；
Fig. 5 is the material balance figure of rolling greasy filth solid-liquid separation and resource reclaim；
In Fig. 1: 1, greasy filth storage tank；11, greasy filth storage tank agitator；12, greasy filth storage tank liquidometer；2、
Screw pump；3, filter press；4, medial launder；41, medial launder liquidometer；42, medial launder blow-off valve；
5, oil pump；6, three-in-one reactor；61 kettlies；62, heat exchanging interlayer；63, reactor agitator；64、
Reactor drain valve；65, thermometer；7, distillation column；71, distillation column thermometer；72, distillation column pressure
Power meter；8, condenser；9, edible vegetable oil tank；91, clear liquid level meter for oil tank；92, clear tank pressure gauge；93、
Edible vegetable oil tank blow-off valve；10, vacuum pump.
Detailed description of the invention
A kind of structure such as Fig. 1 for rolling greasy filth solid-liquid separation and the device of resource reclaim that the present invention provides
Shown in, comprising: greasy filth storage tank 1, screw pump 2, filter press 3, medial launder 4, oil pump 5, three
Unification reactor 6, distillation column 7, condenser 8, edible vegetable oil tank 9 and vacuum pump 10, greasy filth storage tank 1 is respectively
Connecting with the bottom of screw pump 2 and three-in-one reactor 6, screw pump 2 connects with filter press 3, plate
Frame pressure filter 3 connects with medial launder 4, and medial launder 4 connects with oil pump 5, oil pump 5 and three-in-one reactor
The top connection of 6, the top of three-in-one reactor 6 is additionally provided with distillation column 7, distillation column 7 and quintessence oil tank 9
Being connected by condenser 8, the bottom of quintessence oil tank 9 is connected with vacuum pump 10.The top of greasy filth storage tank 1
Portion and sidewall are respectively equipped with greasy filth storage tank agitator 11 and greasy filth storage tank liquidometer 12.The side of medial launder 4
Wall and bottom are installed with medial launder liquidometer 41 and medial launder blow-off valve 42 respectively.Three-in-one reactor 6
Kettle 61 top, inside, lateral wall and bottom be respectively equipped with thermometer 65, reactor agitator 63,
Heat exchanging interlayer and 62 reactor drain valves 64.The top of distillation column 7 is provided with distillation column thermometer 71 and distillation
Pressure tower meter 72.The top of quintessence oil tank 9, sidewall and bottom are respectively equipped with essence tank pressure gauge 92, essence
Liquid level meter for oil tank 91 and quintessence oil tank blow-off valve 93.
Greasy filth storage tank 1 is the device of intermittent harvest greasy filth, by the rotation of greasy filth storage tank agitator 11, keeps away
Exempt from sludge deposition；Control its store oil height by liquidometer 12, after store oil rises to certain altitude, enter
Greasy filth solid-liquid separation and resource reclaim program.
Screw pump 2 is greasy filth/fluid conveyer device.In solid-liquid separation operates, with greasy filth before screw pump 2
Storage tank 1, after be connected with filter press 3；In flocculating sedimentation+filter pressing operation, with three before screw pump 2
Unification reactor 6, after be connected with filter press 3.
The function of filter press 3 is to realize solid-liquid separation, and its critical component is filter cloth, the selection of concrete model,
Install and change, and filter press operation, belong to logical and know technology and equipment.
Medial launder 4 accepts the supernatant fluid after filter press, ready for entering three-in-one reactor 6.
Medial launder is equiped with liquidometer 41, indicates liquid level；Bottom arranges blow-off valve 42, to discharge oil-water separation product
Raw waste water, this effluent part can be recycled utilization in preparation alkali liquor.Oil pump 5 is fluid conveyer device.
Three-in-one reactor 6, by kettle 61, external heat exchanging interlayer 62, agitator 63, drain valve 64,
Thermometer 65 parts such as grade form, and can realize waste oil flocculating-sedimentation, oil product decompression distillation, solid formation in still
Three kinds of functions of extraction-air-distillation, three functions can switch use.The function of distillation column 7 is to realize oil
Product atmospheric and vacuum distillation, for saving space, this distillation column is placed in the top of three-in-one reactor 6, for integral type
Design, is equipped with reading instument thermometer 71, piezometer 72 simultaneously.The function of condenser 8 is oil after distillation
The condensation of product is reclaimed.Edible vegetable oil tank 9 reclaims edible vegetable oil in decompression distillation, reclaims extractant in air-distillation.
It is equipped with liquidometer 91, piezometer 92 and blow-off valve 93 simultaneously.The function of vacuum pump 10 be assisted reaction still 6,
Distillation column 7, condenser 8, edible vegetable oil tank 9, it is achieved decompression distillation function.
A kind of rolling greasy filth solid-liquid separation based on device of the present invention and its recovery method as resource, it includes
Following steps:
A, collection rolling greasy filth, be placed in greasy filth storage tank, be slowly stirred under 5～20r/min stir speed (S.S.)s,
Greasy filth is made to keep Uniform Flow state；
B, after the liquid level that described greasy filth is raised above the effective liquid storing heights of greasy filth storage tank 1/3rd, start
Screw pump, is delivered to greasy filth in filter press, carries out the initial gross separation that solid-liquid is biphase, obtains solid phase
Greasy filth cake and the waste oil of liquid phase, take out described greasy filth cake, reinstall filter press, by institute after clearing up
State after waste oil enters medial launder, squeeze in three-in-one reactor with oil pump；
C, in three-in-one reactor, described waste oil successively adds flocculation under the stirring of 5～20r/min speed
After agent and alkali liquor, stir speed (S.S.) is improved to 20～40r/min, continuously stirred 20～50min；
D, open screw pump the flocculate obtained in three-in-one reactor is delivered to filter press, filter pressing
After flocculated after supernatant and and flocculation mud cake, open filter press and flocculation mud cake taken out, carry out specially
Door processes；
E, the supernatant after described flocculation is delivered to medial launder, after standing, isolates waste water and fluid,
Open the bottom valve of medial launder, waste water is released；
F, with oil pump, described fluid is squeezed in three-in-one reactor, in kettle heat exchanging interlayer, be passed through condensation
Water, after carrying out decompression distillation 1～3h, obtain residual oil and after " filter pressing-flocculation-decompression distill " process again
Oil generation；
G, described greasy filth cake is mixed homogeneously in medial launder with extractant after, be delivered in filter press,
Obtain solid metallic powder and liquid phase solvent after filter pressing, described liquid phase solvent is entered by medial launder three-in-one
Reactor carries out air-distillation, reclaims extractant and reclaimed oil.
Preferably, during described flocculant is inorganic flocculating agent, organic flocculant and composite flocculation agent
At least one, described inorganic flocculating agent is ferric chloride, iron sulfate, bodied ferric sulfate, Melanteritum, polymerization chlorine
Change at least one in aluminum, aluminum sulfate, Alumen, PAFS；Described organic flocculant is polypropylene
Amide.
Preferably, the addition of described alkali liquor accounts for described process according to the soda material in alkali liquor
Waste oil quality 1～20% calculate, described alkali liquor is sodium hydroxide or the potassium hydroxide solution of 5～30wt%.
Preferably, in the decompression distillation described in step f, collection column bottom temperature 160～320 DEG C,
Tower top temperature 180～280 DEG C, the component of vacuum 5mmHg；In step g, described extractant and oil
It is 1～5:1 that the mass ratio of mud cake controls, and described extractant includes petroleum ether, normal hexane, octane, four chlorinations
One in carbon, acetone, toluene, the component of 60～90 DEG C is collected in air-distillation.
Embodiment 1
Certain steel enterprise cold rolling mill DMS20 roller reversible cold-rolling mill group taken from by rolling greasy filth, and color and luster is pitch-dark, bed mud
Thickness, through analyzing, mainly contains two parts material: the oil of liquid and the mud of solid-state, wherein liquid phase 80%,
Solid phase 20%, greasy filth, through mummification, finds that butt composition (contains based on Fe, Cr, Ni, Mn, Si, Ca
Amount and about 60%), and containing micro Mg, Zn, Pb, P etc. (content sum be less than 1%).Additionally,
Finding in preliminary experiment, rolling greasy filth is poor from settleability, and the natural subsidence height of 1 month is only 10%, and
" solid phase " emulsifying " liquid phase " performance of bottom is good, and solid-liquid separation is the most difficult.
Take this rolling greasy filth 2t, by aforesaid separation method, carry out solid-liquid separation and the resource reclaim of greasy filth,
Mainly comprise the processes of and first take filter press to realize preliminary solid-liquid separation；Take again flocculating sedimentation, filter press,
The mode of decompression distillation realizes waste oil regeneration；Finally utilize existing equipment, take solvent extraction, filter press,
The mode of air-distillation realizes waste oil regeneration further and metal substrate sludge reclaims, thus finally realizes rolling greasy filth
The efficient recovery of solid-liquid separation, waste oil regeneration and metals resources.
Particularly as follows: 1, rolling greasy filth solid-liquid separation
Collect rolling greasy filth 2t, be placed in greasy filth storage tank 1, under the slowly effect of agitator 11, keep
Inner homogeneous flow regime；When greasy filth rises to certain liquidometer 12 limit value, start screw pump 2, by greasy filth
It is delivered to filter press 3, it is achieved solid-liquid separation, obtains greasy filth cake about 0.4t and the waste oil of liquid phase of solid phase
(filtrate) about 1.6t；Opening filter press 3, to take out 0.4t greasy filth cake standby, 1.6t waste oil (filtrate)
Enter medial launder 4.
2, waste oil regeneration
Waste oil (filtrate) oil pump 5 in medial launder 3 is squeezed in three-in-one reactor 6, starts reactor
6 agitator 6-3 are slowly stirred (speed 10r/min), and being initially charged about 0.32t mass fraction is 0.05% sun
Ion PAM flocculant solution (PAM be the mass percent of waste oil be 1%), adds in whipping process
0.4t mass fraction be 20% sodium hydroxide solution (sodium hydroxide be waste oil mass percent 5%),
Variable frequency adjustment stir speed (S.S.) rises to 20r/min, continuously stirred 30min and stops stirring；Opening screw pump 2 will
Flocculate is delivered to filter press 3, obtains about 2.15t flocculation treatment thing and about 0.17t wadding after filter pressing
Solidifying bed mud, opens filter press and is taken out by bed mud, carry out special disposal.
The flocculation treatment thing of 2.15t is entered medial launder 4, opens medial launder bottom drain valve 4-2 and waste water is put
Go out, obtain about 1.4t flocculation treatment oil；With oil pump 5, flocculation treatment oil squeezed into three-in-one reactor 6,
Open kettle heat exchanging interlayer 62, successively start distillation column 7, condenser 8, vacuum pump 10, carry out decompression and steam
Evaporate, collection column bottom temperature 160～320 DEG C, tower top temperature 180～280 DEG C, the component of vacuum 5mmHg,
Distill complete after about 2h；Open edible vegetable oil bottom valve, release edible vegetable oil after distillation processes, i.e. obtain through " filter pressing-
Flocculation-decompression distillation " process after reclaimed oil about 1t；Open reactor 6 bottom drain valve, bottom releasing
Residual oil, carries out special disposal；
3, solid phase components reclaims
The 0.4t greasy filth obtained in step " 1, rolling greasy filth solid-liquid separation " is added three with 0.8t petroleum ether
In unification reactor 6, starting agitator 63, regulation stir speed (S.S.) is 85r/min, stirs 30min, beats
Open screw pump 2,1.2t greasy filth is squeezed into medial launder 4 with extractant mixture by filter press 3,
Medial launder 4 obtains about 0.9t agent oil mixture, opens filter press, i.e. obtain about 0.3t metal
Pressed powder；Opening oil pump 5 and 0.9t agent oil mixture is squeezed into three-in-one reactor 6, air-distillation is collected
The fraction of 60～80 DEG C about 0.72t, is the petroleum ether (response rate 75%) of recovery, edible vegetable oil tank 9 discharges
Valve 93 is released；Open three-in-one reactor 6 bottom drain valve 64, reclaim waste oil about 0.1t, with reference to useless
It is processed by oil regeneration.
To sum up, 2t rolls greasy filth, through solid-liquid separation, waste oil regeneration and greasy filth extract after, recyclable obtain to
Few 1.1t reclaimed oil (waste oil Distillation recovery 1t+ greasy filth extraction and recovery 0.1t), 0.3t metal solid powder,
Consume petroleum ether about 0.04t, consumes cationic PAM flocculant 160g, consumes liquid caustic soda 0.21t, consumes water
About 0.063t, produces remaining residual oil about 0.35t and flocculation residue about 0.5t.Material balance is as shown in Figure 2.
4, waste oil regeneration effect and recovery solid metallic material component
As shown in table 1, for greasy filth purify before, purify after and rolling fresh oil key index contrast.It is visible,
After this technique purifies, the impurity such as oil product physical and chemical index has bigger improvement, solid phase particles are almost removed, color and luster
Yellowish by pitch-dark turn, substantially achieve or close to this rank base oil standard, can return to rolling line and continue
Use.
As shown in table 2, for solid metallic material through extraction after component analysis.Visible, except remained on surface
Outside part oil product, ROLLING OIL Sediment Composition with ferrum, chromium, nickel, the elemental metals element of manganese and oxide thereof is
Main, these four essential element content is aggregated in more than 70%, and remaining impurity is silicon, sodium, Calcium Magnesium Sulphur etc.
Micro constitutent.By high-temperature oxydation, in loose metal powder material, organic principle can effectively be removed, solid constituent
Metallized pellet can be oxidized to.This type of pelletizing degree of metalization is high, impurity content is few, can be in the long flow process of iron and steel
Recycling (as returned steel-making etc.) in operation.
Table 1 roll greasy filth purify before, purify after and rolling fresh oil key index contrast (mg/L)
Table 2 ROLLING OIL bed mud solid-phase material chemical composition
| Project | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 |
| Pb | <0.05 | <0.05 | <0.05 | <0.05 |
| Zn | <0.05 | <0.05 | <0.05 | 0.1 |
| SiO2 | 0.6 | 1.2 | 0.6 | 0.7 |
| Al2O3 | <0.1 | <0.1 | <0.1 | <0.1 |
| CaO | <0.1 | <0.1 | 0.1 | 0.1 |
| MgO | <0.1 | <0.1 | <0.1 | <0.1 |
| MnO | 3.0 | 4.1 | 2.5 | 4.2 |
| Na2O | 2.0 | 2.5 | 2.5 | 1.2 |
| T.Fe | 49.4 | 50.5 | 51.2 | 49.8 |
| Cr2O3 | 17.6 | 16.5 | 18.1 | 14.5 |
| NiO | 5.0 | 4.2 | 3.6 | 6.1 |
| Co3O4 | 0.2 | <0.1 | <0.1 | <0.1 |
| CuO | 0.5 | <0.1 | <0.1 | 0.1 |
Embodiment 2
Rolling greasy filth solid-liquid separation and resource recovery device, method and implementation process are same as in Example 1.Institute
Difference is the addition difference of rolling greasy filth treating capacity, flocculant, liquid caustic soda, petroleum ether.Material balance is such as
Shown in Fig. 3.
Embodiment 3
Rolling greasy filth solid-liquid separation and resource recovery device, method and implementation process are same as in Example 1.Institute
Difference is the addition difference of rolling greasy filth treating capacity, flocculant, liquid caustic soda, petroleum ether.Material balance is such as
Shown in Fig. 4.
Embodiment 4
Rolling greasy filth solid-liquid separation and resource recovery device, method and implementation process are same as in Example 1.Institute
Difference is the addition difference of rolling greasy filth treating capacity, flocculant, liquid caustic soda, petroleum ether.Material balance is such as
Shown in Fig. 5.
Enumerate example 2 below～embodiment 4 the most again to further illustrate the said method of the present invention, tool
Body technology parameter is as shown in table 3:
Table 3 embodiment 1～the technological parameter of embodiment 4
In sum, only presently preferred embodiments of the present invention, not it is used for limiting the model that the present invention implements
Enclose, all impartial changes done according to the shape described in scope of the invention as claimed, structure, feature and spirit
With modification, all should be included in scope of the presently claimed invention.
Claims (10)
1. one kind is used for the device rolling greasy filth solid-liquid separation with resource reclaim, it is characterised in that including: oil
Mud storage tank, screw pump, filter press, medial launder, oil pump, three-in-one reactor, distillation column, condensation
Device, edible vegetable oil tank and vacuum pump, described greasy filth storage tank bottom with screw pump and three-in-one reactor respectively connects,
Described screw pump connects with filter press, and described filter press connects with medial launder, described medial launder with
Oil pump connects, and described oil pump connects with the top of three-in-one reactor, and the top of described three-in-one reactor is also
Being provided with distillation column, described distillation column is connected by condenser with quintessence oil tank, and the bottom of described quintessence oil tank is with true
Empty pump is connected.
2. the device for rolling greasy filth solid-liquid separation and resource reclaim as claimed in claim 1, its feature
It is, described greasy filth storage tank is provided with greasy filth storage tank agitator and greasy filth storage tank liquidometer.
3. the device for rolling greasy filth solid-liquid separation and resource reclaim as claimed in claim 1, its feature
Being, the sidewall of described medial launder and bottom are installed with medial launder liquidometer and medial launder blow-off valve respectively.
4. the device for rolling greasy filth solid-liquid separation and resource reclaim as claimed in claim 1, its feature
Be, kettle top, inside, lateral wall and the bottom of described three-in-one reactor be respectively equipped with thermometer,
Reactor agitator, heat exchanging interlayer and reactor drain valve.
5. the device for rolling greasy filth solid-liquid separation and resource reclaim as claimed in claim 1, its feature
Being, the top of described distillation column is provided with distillation column thermometer and column pressure meter.
6. the device for rolling greasy filth solid-liquid separation and resource reclaim as claimed in claim 1, its feature
It is, top, inside and the sidewall of described quintessence oil tank is respectively equipped with essence tank pressure gauge, quintessence oil tank liquid
Position meter and quintessence oil tank blow-off valve.
7. a rolling greasy filth solid-liquid separation based on described device arbitrary in claim 1～6 is returned with resource
Receiving method, it is characterised in that comprise the steps:
A, collection rolling greasy filth, be placed in greasy filth storage tank, be slowly stirred under 5～20r/min stir speed (S.S.)s,
Greasy filth is made to keep Uniform Flow state；
B, after the liquid level that described greasy filth is raised above the effective liquid storing heights of greasy filth storage tank 1/3rd, start spiral shell
Bar pump, is delivered to greasy filth in filter press, carries out the initial gross separation that solid-liquid is biphase, obtains the oil of solid phase
Mud cake and the waste oil of liquid phase, take out described greasy filth cake, reinstall filter press, by described after clearing up
After waste oil enters medial launder, squeeze in three-in-one reactor with oil pump；
C, in three-in-one reactor, described waste oil successively adds flocculation under the stirring of 5～20r/min speed
After agent and alkali liquor, stir speed (S.S.) is improved to 20～40r/min, continuously stirred 20～50min；
D, open screw pump the flocculate obtained in three-in-one reactor is delivered to filter press, after filter pressing
After being flocculated supernatant and and flocculation mud cake, open filter press and flocculation mud cake taken out, carry out special
Process；
E, the supernatant after described flocculation is delivered to medial launder, after standing, isolates waste water and fluid, beat
Drive the bottom valve of medial launder, waste water is released；
F, with oil pump, described fluid is squeezed in three-in-one reactor, in kettle heat exchanging interlayer, is passed through condensed water,
After carrying out decompression distillation 1～3h, obtain residual oil and the reclaimed oil after " filter pressing-flocculation-decompression distillation " processes；
G, described greasy filth cake is mixed homogeneously in medial launder with extractant after, be delivered in filter press,
Obtain solid metallic powder and liquid phase solvent after filter pressing, described liquid phase solvent is entered by medial launder three-in-one
Reactor carries out air-distillation, reclaims extractant and reclaimed oil.
8. rolling greasy filth solid-liquid separation as claimed in claim 7 and its recovery method as resource, it is characterised in that institute
Stating flocculant is at least one in inorganic flocculating agent, organic flocculant and composite flocculation agent, described inorganic wadding
Solidifying agent be ferric chloride, iron sulfate, bodied ferric sulfate, Melanteritum, aluminium polychlorid, aluminum sulfate, Alumen,
At least one in PAFS；Described organic flocculant is polyacrylamide.
9. rolling greasy filth solid-liquid separation as claimed in claim 7 and its recovery method as resource, it is characterised in that institute
State the addition of alkali liquor and account for 1～20% the calculating of waste oil quality of described process according to the soda material in alkali liquor,
Described alkali liquor is sodium hydroxide or the potassium hydroxide solution of 5～30wt%.
10. rolling greasy filth solid-liquid separation as claimed in claim 7 and its recovery method as resource, it is characterised in that
In decompression distillation described in step f, collection column bottom temperature 160～320 DEG C, tower top temperature 180～280 DEG C,
The component of vacuum 5mmHg；In step g, described extractant controls to be 1～5:1 with the mass ratio of greasy filth cake,
Described extractant includes the one in petroleum ether, normal hexane, octane, carbon tetrachloride, acetone, toluene, often
The component of 60～90 DEG C is collected in pressure distillation.
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| CN201510208018.5A CN106147978A (en) | 2015-04-27 | 2015-04-27 | For rolling device and the using method thereof of greasy filth solid-liquid separation and resource reclaim |
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| CN201510208018.5A CN106147978A (en) | 2015-04-27 | 2015-04-27 | For rolling device and the using method thereof of greasy filth solid-liquid separation and resource reclaim |
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