CN1579969A - Oil-containing sludge treating process - Google Patents
Oil-containing sludge treating process Download PDFInfo
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- CN1579969A CN1579969A CN 03133696 CN03133696A CN1579969A CN 1579969 A CN1579969 A CN 1579969A CN 03133696 CN03133696 CN 03133696 CN 03133696 A CN03133696 A CN 03133696A CN 1579969 A CN1579969 A CN 1579969A
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- oily sludge
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Abstract
The invention relates to sludge treatment, concretely, a new technics of oil-containing sludge treatment. Firstly add hot water (70-80deg.C) into oil-containing sludge according to ratio between 1:3 and 1:1. Stir to make them intensive mixing and let oil reach balance between solid phase and liquid phase. Introduce clean water to conduct circular oil removal and make oil separate from mixing phase. After the separation, it is finished that oil-containing sludge is washed in reactor. Finally, conduct circulation and acentric separation. It adapts to process oil fallen on ground, sludge at tank bottom and sludge after oil refining with simpleness, high efficiency and low cost. It has a large applied value and extending prospect.
Description
Technical field
The present invention relates to the sludge treatment technology, specifically a kind of new oily sludge treatment process.
Background technology
For the processing of oily sludge, all carried out a large amount of research practices at present both at home and abroad, adopt methods such as concentrating in, flotation oil removing, extraction, burning usually, but there are the following problems mostly:
(1) energy consumption height, the processing costs costliness;
(2) complex process, the operational condition harshness;
(3) resource recovery is low.As oily sludge (jar bed mud and land oil), oleaginousness have up to 20～30%, the oil in the oily sludge is reclaimed, make the oily sludge resource utilization.But also do not develop method suitable, high-recovery at present technically;
(4) the oily sludge treatment technology is not thorough, easily causes secondary pollution.Separating of oil not thorough in the oily sludge, though oleaginousness descends in the greasy filth, do not reach greasy filth so fully and separate purpose, the greasy filth after the separation will pollute; Also may impact and endanger as chemical agent separating of oil in the oily sludge environment.
Summary of the invention
The present invention is intended to provide a kind of economy for the processing of oily sludge, and is simple, efficient, the oily sludge treatment process of environmental protection.
To achieve these goals, technical scheme of the present invention is: add earlier temperature at 70～85 ℃ hot water in oily sludge, its add-on is to make the ratio of oily sludge and hot water between 1: 3～1: 1; Through stirring, greasy filth and water are fully mixed to oilyly reach balance in solid phase and liquid phase, feed the clear water oil removal that circulates again, oil is separated from mixed phase; After oil slick in the mixed phase was separated by oil removal, oily sludge was finished the cleaning in the reactor, mud was revolved jet separation and centrifugation again and got final product.
Described stirring (generally by mechanical means) is answered interior high-speed stirring prior to reactor, and speed is 250r/min～300r/min, makes water and oily sludge thorough mixing, accelerates to separate desorption rate; When oil when solid phase and liquid phase reach balance, the stirring velocity that reduces reactor again is to 20r/min～150r/min, and feed clear water circulate oil removal, oil slick is separated by oil removal to the liquid phase; When the liquid level of the mixed phase of clear water that feeds and oily sludge arrives the reactor overflow weir, control the effusive water yield maintenance of its water yield (fresh water pump is squeezed into the water yield of reactor) and overflow groove balance; Wherein said oily sludge and hot water mixed phase volume account for 70%～90% of reactor volume; Finish cleaning in the reactor when oily sludge, after oil slick was separated by oil removal in the mixed phase, mud revolves jet and centrifugation gets final product.The jet separator that revolves of the present invention is with common cyclone separator difference: be the top enclosuring structure, sample is all discharged by the bottom.
Compared with prior art, the present invention has more following beneficial effect:
1. technology of the present invention is simple, easy to operate.
2. have environmental protection effect and economic benefit preferably.The present invention adopts pure physical method for separation, does not add any chemical agent, is difficult for causing secondary pollution.Adopt the present invention to make resource obtain reclaiming in the antipollution while, and rate of recovery height (oil recovery rate is more than 90%).
3. Pollutant Treatment is more thorough.Treatment technologies such as the present invention utilized high temperature, mechanical stirring, circulation oil removal, revolves jet, centrifugal are handled oily sludge and are reached ideal effect, and the dry sample oil length is lower than 2%.
4. have low-cost characteristics.It is low that the present invention reclaims in the resource process energy consumption, compares with other greasy filth treatment process, greatly reduces processing cost.
Description of drawings
Fig. 1 is a treatment process equipment therefor structural representation of the present invention.
Embodiment
Below in conjunction with embodiment the present invention is described in further detail.
Embodiment 1
The present invention is by adding hot water (70～85 ℃), make oily sludge Central Plains oil liquify, viscosity and surface tension reduce, and oil is constantly separated desorb from greasy filth, when the middle mutually oily concentration of water and mud reaches balance, in reactor, progressively add clear water, reduce stirring velocity, viscosity of crude raises gradually, in churned mechanically centrifugal field, little oil droplet is assembled the little oil clot of formation gradually, and bubble through the water column, enter in the oil removal groove oil droplet that meanwhile suspends in water by overflow weir, continuous circulation injection at water has strengthened ascent rate, finishes repeatedly oil removal process.After initial gross separation, profit mud three-phase mixture is again through the overwinding jet separator, and the tiny oil droplets that is suspended from the mud is further separated, and final slurry is by the centrifugal treating oil removing of further dewatering.Specifically referring to Fig. 1.
Technical process equipment used main part of the present invention comprises: greasy filth purge tank 1, contain mud jar A2, contain mud jar B4, revolve jet separator 3, controller 5, whizzer 6, Rinsing Area 7, ring-type overflow weir 12 is established in purge tank 1 top, and forms groove type oil removal groove 13 between purge tank 1 wall, communicates with Rinsing Area 7 by water discharge valve 14, establish agitator 11 and temperature sensor 51 (temperature in the reflection purge tank 1) in the purge tank 1, temperature sensor 51 is electrically connected with controller 5; Purge tank 1 below is installed and is contained mud jar A2, contains mud jar A2 and revolves jet separator 3 pipelines and link to each other, revolves jet separator 3 belows and establishes Sheng mud jar B4, communicates with whizzer 6 pipelines; In described Sheng mud jar A2, the Rinsing Area 7 slush pump 21, fresh water pump 71 are installed respectively.
In the purge tank 1 of mud mixture adding as reactor, the temperature of hot water is at 70～85 ℃, the ratio of mud and water is (present embodiment is 1: 3) between 1: 3～1: 1, in preceding 30～60min (present embodiment is 60min), propeller agitator 11 high-speed stirring (250r/min～300r/min in the reactor, present embodiment is 300r/min), logical agitator motor 16 controls of stirring velocity (present embodiment used be ys6414 for agitator motor model), controller 5 (temperature controller is a TDW series temperature controller), be connected to temperature sensor 51, can reflect temperature in the purge tank 1 at any time, when the desorb of oil in the purge tank 1 reaches balance, reduce stirring velocity to 20r/min～150r/min (present embodiment is 50r/min), and in purge tank 1, add clear water (circulation water filling) by fresh water pumps 71 in the Rinsing Area 7, reduction along with temperature, the little oil droplet that is scattered in the water is progressively assembled the little oil clot of formation, along with the circulation water filling is constantly floated, when liquid level is higher than overflow weir 12 in the purge tank 1, oil-water mixture overflows in the oil removal groove 13 together, on oil swims on water the face, cast aside oil slick, open simultaneously that water flows in the Rinsing Area 7 in the water discharge valve 14 oil removal grooves 13 of oil removal groove 13 bottoms, return in the middle of the purge tank 1 by fresh water pump 71 again, finish the oil removal process of reciprocation cycle.Open the mud valve 15 of purge tank 1 bottom then, mud is flowed into contain among the mud jar A2, open the slush pump of containing among the mud jar A2 21, mud squeezed into revolve jet separator 3, make mud separate to enter by jet and contain mud jar B4, skim the upper strata oil slick, mud enters whizzer 6 and carries out centrifugation.
Wherein: described greasy dirt and hot water mixed phase volume account for 70%～90% of reactor volume, as 90%; Described mud slurry is revolved jet separator is the top enclosuring structure, and sample is all discharged by the bottom.
Principle of the present invention:
(1) temperature control
Under the comparatively high temps, the viscosity and the surface tension of crude oil are all very little, and the thermal motion of oil molecule is more violent, help oily desorb on particulate matter such as silt particle.When desorb reached balance, oil viscosity and surface tension increased, and helped the mutual adsorpting aggregation of oil droplet.Take controlled temperature change procedure purpose to be not influence under the prerequisite of treatment effect, shorten the treatment time, reduce processing cost.
(2) mechanical stirring
Mechanical stirring makes greasy filth and water thorough mixing, under the high speed rotating state, produces stronger hydraulic shear, and the oily sludge particle produces high-intensity surface friction under the hydraulic shear effect, and the adsorbed oil of solid surface constantly obtains desorb.In addition, the agitator of high speed rotating 11 drives fluids and is rotated in and produces centrifugal field in the reactor, encloses in like this to have formed innage density distribution district, helps the piece that is gathered into of oil droplet.
(3) circulation oil removal
When the reactor liquid level is higher than overflow weir 12, the upper strata oil-water mixture flows into oil removal groove 13 through overflow weir 12, cast aside on oil swims on water in oil removal groove 13 layer, the overflow water outlet is returned in the reactor again from reactor, water rises through filling level in the reactor, overflow once more when reaching overflow weir 12, reciprocation cycle reaches the purpose of multistage oil removal like this.
(4) revolving jet separates
Revolve jet separator 3 sides and establish the oil-cut mud inlet, oil-cut mud revolves jet separator 3 through tangentially entering, for the helical movement downwards along wall, the changing conditions of revolving the pressure in the jet separator 3 is the static pressure maximum of wall, more little to center pressure more, less than normal atmosphere, this just makes air enter in the separator by revolving jet separator 3 outlet at bottoms at the eddy flow center pressure, forms the air vortex post that distributes along axis.
Be involved in its inside at the interface air by the mud of high speed rotating, conic section constantly shrinks in addition, under the effect of wall uplift pressure, upwards do the secondary spiral motion near the fluid of central part at cone base by the awl end, mix mutually with air, so just form mud and Air mixing system, after spraying, form oil and bubble absorption, assemble processes such as come-up.
Get certain oil field oil-containing mud (land oil, jar bed mud), after art breading of the present invention, the result is as shown in table 1.
Table 1 embodiment of the invention art breading result
| Sample number into spectrum | Sample is formed | Add hot water temperature ℃ | Overall treatment time min | Dry sample oil length % | ||
| Water ratio | Oil length | Mud containing rate | ||||
| ??1 | ??20.51 | ??10.86 | ??68.63 | ????70 | ????80 | ??1.82 |
| ??2 | ??20.87 | ??10.96 | ??68.17 | ????75 | ????80 | ??1.71 |
| ??3 | ??20.21 | ??11.01 | ??68.85 | ????80 | ????90 | ??1.96 |
| ??4 | ??20.45 | ??13.23 | ??66.32 | ????85 | ????90 | ??1.98 |
| ??5 | ??20.62 | ??13.67 | ??65.71 | ????78 | ????85 | ??1.75 |
| ??6 | ??20.14 | ??13.91 | ??65.95 | ????83 | ????90 | ??2.00 |
*Annotate: the dry sample oil length refers to dry the mud sample oil length after anhydrating.
Claims (6)
1. oily sludge treatment process is characterized in that: add temperature earlier at 70～85 ℃ hot water in oily sludge, its add-on is to make the ratio of oily sludge and hot water between 1: 3～1: 1; Through stirring, oily sludge and water are fully mixed to oilyly reach balance in solid phase and liquid phase, feed the clear water oil removal that circulates again, oil is separated from mixed phase; After oil slick in the mixed phase was separated by oil removal, oily sludge was finished the cleaning in the reactor, mud was revolved jet separation and centrifugation again and got final product.
2. by the described oily sludge treatment process of claim 1, it is characterized in that: high-speed stirring in described stirring is answered prior to reactor, speed is 250r/min～300r/min, makes water and oily sludge thorough mixing, accelerates to separate desorption rate; When oil when solid phase and liquid phase reach balance, the stirring velocity that reduces reactor again is to 20r/min～150r/min, and feeds the clear water oil removal that circulates, oil slick is separated by oil removal to the mixed phase.
3. by the described oily sludge treatment process of claim 1, it is characterized in that: when the liquid level of the mixed phase of clear water that feeds and oily sludge arrives the reactor overflow weir, control the effusive water yield of its water yield and overflow groove and keep balance.
4. by the described oily sludge treatment process of claim 1, it is characterized in that: wherein said oily sludge and hot water mixed phase volume account for 70%～90% of reactor volume.
5. by the described oily sludge treatment process of claim 1, it is characterized in that: finish cleaning in the reactor when oily oily sludge, after oil slick was separated by oil removal in the mixed phase, mud revolves jet to be separated.
6. by the described oily sludge treatment process of claim 1, it is characterized in that: described the mud slurry is revolved jet separator is the top enclosuring structure, and sample is all discharged by the bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031336965A CN100404443C (en) | 2003-08-15 | 2003-08-15 | Oil-containing sludge treating process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031336965A CN100404443C (en) | 2003-08-15 | 2003-08-15 | Oil-containing sludge treating process |
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| CN1579969A true CN1579969A (en) | 2005-02-16 |
| CN100404443C CN100404443C (en) | 2008-07-23 |
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| CNB031336965A Expired - Fee Related CN100404443C (en) | 2003-08-15 | 2003-08-15 | Oil-containing sludge treating process |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101190808B (en) * | 2006-11-28 | 2011-02-09 | 第一美洲科学公司 | The treatment method and device for recycle sludge from sewage |
| CN102698816A (en) * | 2012-06-21 | 2012-10-03 | 上海华畅环保设备发展有限公司 | Post-processing method and post-processing device for hydrothermal desorption of residue hydrotreating excretion catalyst in ebullated bed |
| CN103449689A (en) * | 2012-05-30 | 2013-12-18 | 青海大地环境工程技术有限公司 | Oil sludge sand separation method and oil sludge sand separator |
| CN105217902A (en) * | 2014-06-23 | 2016-01-06 | 侯向明 | Oily sludge stores chemical oil pool and treatment process thereof |
| CN105441102A (en) * | 2015-04-01 | 2016-03-30 | 艾特克控股集团有限公司 | Oil-containing mortar purification device |
| CN108218167A (en) * | 2018-04-13 | 2018-06-29 | 胜利油田胜兴集团有限责任公司 | A kind of novel greasy filth Separation process arrangements |
| CN109574140A (en) * | 2019-01-14 | 2019-04-05 | 华东理工大学 | The two-stage waterpower oil removal method of oil refining waste water |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106630512A (en) * | 2016-12-14 | 2017-05-10 | 桐乡市搏腾贸易有限公司 | Oily sludge treatment agent and preparation method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1085193A (en) * | 1993-09-10 | 1994-04-13 | 石油大学(北京) | The method and apparatus of refiltered oil from oily sludge |
| CN1178777A (en) * | 1997-10-16 | 1998-04-15 | 河南石油勘探局炼油厂 | Process for treating oil containing sludge |
-
2003
- 2003-08-15 CN CNB031336965A patent/CN100404443C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101190808B (en) * | 2006-11-28 | 2011-02-09 | 第一美洲科学公司 | The treatment method and device for recycle sludge from sewage |
| CN103449689A (en) * | 2012-05-30 | 2013-12-18 | 青海大地环境工程技术有限公司 | Oil sludge sand separation method and oil sludge sand separator |
| CN102698816A (en) * | 2012-06-21 | 2012-10-03 | 上海华畅环保设备发展有限公司 | Post-processing method and post-processing device for hydrothermal desorption of residue hydrotreating excretion catalyst in ebullated bed |
| CN102698816B (en) * | 2012-06-21 | 2014-03-26 | 上海华畅环保设备发展有限公司 | Post-processing method and post-processing device for hydrothermal desorption of residue hydrotreating excretion catalyst in ebullated bed |
| CN105217902A (en) * | 2014-06-23 | 2016-01-06 | 侯向明 | Oily sludge stores chemical oil pool and treatment process thereof |
| CN105441102A (en) * | 2015-04-01 | 2016-03-30 | 艾特克控股集团有限公司 | Oil-containing mortar purification device |
| CN108218167A (en) * | 2018-04-13 | 2018-06-29 | 胜利油田胜兴集团有限责任公司 | A kind of novel greasy filth Separation process arrangements |
| CN108218167B (en) * | 2018-04-13 | 2024-04-26 | 胜利油田胜兴集团有限责任公司 | Oil sludge separation process equipment |
| CN109574140A (en) * | 2019-01-14 | 2019-04-05 | 华东理工大学 | The two-stage waterpower oil removal method of oil refining waste water |
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| Publication number | Publication date |
|---|---|
| CN100404443C (en) | 2008-07-23 |
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