CN110054393A - A kind of processing method of oily sludge - Google Patents
A kind of processing method of oily sludge Download PDFInfo
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- CN110054393A CN110054393A CN201910294716.XA CN201910294716A CN110054393A CN 110054393 A CN110054393 A CN 110054393A CN 201910294716 A CN201910294716 A CN 201910294716A CN 110054393 A CN110054393 A CN 110054393A
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- 239000010802 sludge Substances 0.000 title claims abstract description 68
- 238000003672 processing method Methods 0.000 title claims abstract description 18
- 239000003607 modifier Substances 0.000 claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 238000012545 processing Methods 0.000 claims abstract description 15
- 239000000203 mixture Substances 0.000 claims abstract description 10
- 238000000926 separation method Methods 0.000 claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- 239000002270 dispersing agent Substances 0.000 claims abstract description 8
- 239000004519 grease Substances 0.000 claims abstract description 7
- 238000009210 therapy by ultrasound Methods 0.000 claims abstract description 7
- 239000012024 dehydrating agents Substances 0.000 claims abstract description 4
- 238000010907 mechanical stirring Methods 0.000 claims abstract description 4
- 239000003921 oil Substances 0.000 claims description 52
- 235000019198 oils Nutrition 0.000 claims description 50
- 238000000034 method Methods 0.000 claims description 24
- 239000007787 solid Substances 0.000 claims description 13
- 239000010779 crude oil Substances 0.000 claims description 11
- 238000004064 recycling Methods 0.000 claims description 10
- 239000010801 sewage sludge Substances 0.000 claims description 9
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 239000010865 sewage Substances 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 4
- 238000002604 ultrasonography Methods 0.000 claims description 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 3
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 238000007667 floating Methods 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 235000019476 oil-water mixture Nutrition 0.000 claims description 3
- 239000011734 sodium Substances 0.000 claims description 3
- 229910052708 sodium Inorganic materials 0.000 claims description 3
- 239000004202 carbamide Substances 0.000 claims description 2
- 235000013877 carbamide Nutrition 0.000 claims description 2
- WBIQQQGBSDOWNP-UHFFFAOYSA-N 2-dodecylbenzenesulfonic acid Chemical compound CCCCCCCCCCCCC1=CC=CC=C1S(O)(=O)=O WBIQQQGBSDOWNP-UHFFFAOYSA-N 0.000 claims 1
- 229940060296 dodecylbenzenesulfonic acid Drugs 0.000 claims 1
- 238000006116 polymerization reaction Methods 0.000 claims 1
- ORVGYTXFUWTWDM-UHFFFAOYSA-N silicic acid;sodium Chemical group [Na].O[Si](O)(O)O ORVGYTXFUWTWDM-UHFFFAOYSA-N 0.000 claims 1
- 230000008901 benefit Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 239000003814 drug Substances 0.000 description 5
- 239000000839 emulsion Substances 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 4
- 239000003208 petroleum Substances 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 239000004115 Sodium Silicate Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 239000004615 ingredient Substances 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000005191 phase separation Methods 0.000 description 3
- 235000019795 sodium metasilicate Nutrition 0.000 description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical group [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 3
- 229910052911 sodium silicate Inorganic materials 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 230000009514 concussion Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000004945 emulsification Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 150000001454 anthracenes Chemical class 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 150000008107 benzenesulfonic acids Chemical class 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000012043 crude product Substances 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- DNJIEGIFACGWOD-UHFFFAOYSA-N ethanethiol Chemical compound CCS DNJIEGIFACGWOD-UHFFFAOYSA-N 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000002207 metabolite Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 150000003672 ureas Chemical group 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/127—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering by centrifugation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
- C02F11/131—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating using electromagnetic or ultrasonic waves
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
- C02F11/148—Combined use of inorganic and organic substances, being added in the same treatment step
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G1/00—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/10—Feedstock materials
- C10G2300/1003—Waste materials
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Electromagnetism (AREA)
- Physics & Mathematics (AREA)
- Inorganic Chemistry (AREA)
- Wood Science & Technology (AREA)
- Treatment Of Sludge (AREA)
Abstract
The present invention provides a kind of processing method of oily sludge, including the following steps: sludge, water, demulsifier, flocculant is added in a modifier treatment according to a certain ratio, and after mechanical stirring is sufficiently mixed processing, sludge is diluted as flow regime by thick；Heating ultrasonic treatment, the mud mixture after a modifier treatment is ultrasonically treated after being heated to 45-55 DEG C；Alkaline dispersing agent and dehydrating agent is added in secondary modifier treatment, carries out secondary modifier treatment to the profound oil not being kept completely separate in preamble is handled, further progress oil separates admittedly；Centrifuge separation；Desiccation；Grease leafing.
Description
Technical field
The present invention relates to a kind of processing method of oily sludge, the advantages of combining extraction and ultrasonic method, give full play to
The surplus value of oily sludge has reached environmental protection and has recycled the double goal of the energy, realize the decrement of oily sludge less,
Innoxious and recycling.The design of the invention is scientific and reasonable, have it is easy to operate, be easily achieved, low energy consumption, small investment, washing oil effect
The advantage that rate is high, economic benefit is big, is a kind of processing method of oily sludge with higher innovation.
Background technique
Demand with the world to petroleum and mineral products is continuously increased, surging petroleum and mineral products price, and each petroleum is stimulated to provide
Source state, which tries to be the first, develops new resources, new technology, oil exploitation, transport, refining and oily waste water treatment process Crude Oil or product oil
It is mixed into soil or other media, oil therein cannot directly recycle and the mixing of the variform that may cause environmental pollution
Object.General oil content is 10%~50% in greasy filth, and 40%~90%, yield is also rising year by year moisture content.Containing greasy dirt
Mud is a kind of multiphase dispersion rich in mineral oil, complicated composition, be by clay particle, organic matter, wadding body, microorganism and its
The sludge that metabolite, minerals etc. are mixed to form.Generally by oil-in-water (O/W), Water-In-Oil (W/O) and suspended solid impurities
Composition, due to aquation, one or more layers water invests particle surface and the obstacle that causes particle mutually to polymerize, simultaneously because
Grain charging property and mutually repel, so that wadding body is in extremely stable state.
Oily sludge is primarily generated at oil field and oil plant, can by sources be divided into three kinds of different types: (1) in oil field development
In the process, part crude oil penetrates into surface soil, forms greasy filth and is known as ground sludge；(2) various oil storage tanks are in natural subsidence
Greasy filth can be generated and be known as tank bottom mud；(3) three mud of oil plant, comprising: oil separator bed mud, dissolved air floatation dross and residual active sludge
Deng.
The yield of oily sludge is huge.According to statistics, medium-scale oil field day greasy filth 100 tons of stacking total amounts of amount are at 400,000 tons
More than.The substances such as the benzene homologues, phenols, the anthracene class that are typically contained in these sludge, and with stench and toxicity, if directly and natural
Environment contact, will cause larger pollution to soil, water body and vegetation, while also implying that the waste of petroleum resources.Therefore, nothing
By be from environmental protection or from recycling the energy from the point of view of, all should to oily sludge carry out harmless clean processing.
The ingredient of oily sludge contains: water, oil emulsion or absorption oil, solid foreign materials, inorganic salts etc..Due to the water of greasy filth
It closes and charging property is in water generally in stable suspension emulsion system, multi-phase separation is difficult to realize, to increase processing skill
The difficulty and cost of art.Secondly as a variety of possibilities of the matrix of carrying oils, the oily sludge ingredient of general designation are extremely multiple
It is miscellaneous, containing chemical substances such as phosphorus, arsenic, heavy metal, hydrocarbons difficult to degrade, radioactive elements, and a large amount of aged crude oils, wax
The water treatment agents such as matter, asphalitine, colloid, or even corrosion inhibiter, flocculating agent, antisludging agent including being added in production process, each substance
Property is different, therefore, also there is the requirement of multiplicity to processing technique.
In the prior art, the common practices of oily sludge is handled are as follows:
(1) chemico-heating wash method
Such as the prior art of Patent No. CN207862145U and CN108409077A, oil-containing is realized using chemico-heating wash method
The three phase separation of sludge, still, which needs to be added various medicaments and thermokalite aqueous solution is washed repeatedly, heated, stirring,
It stands.Processing step is cumbersome, and it is more inconvenient to implement.
(2) extraction
Such as the prior art of Patent No. CN207793003U and CN108203218A, using extraction according to " phase patibhaga-nimitta
It is molten " principle realize oily sludge harmless treatment, still, this method application be above faced with two hang-ups, one is a lack of height
Effect, cheap extractant；It is well solved second is that the problem of loss of extractant is not yet received.
(3) pyrolysismethod
Such as the prior art of Patent No. CN207877560U and CN207933253U, using pyrolysismethod in catalyst and nothing
Under the action of oxygen, minute-pressure, the oil in oily sludge is converted, separated and recycled by processes such as distillation, thermal decompositions.But
Be, this method there are equipment investments it is big, technical requirements are high the disadvantages of, and technical research and immature at present.
(4) ultrasonic method
Such as the prior art of Patent No. CN108191205A and CN208136066U, using the frequency of control ultrasonic wave,
Radiated time, temperature and sedimentation time handle oily sludge of different nature, to reach separating treatment effect.But it should
Method has a corrosiveness to solid, and the sound intensity also can produce emulsification when being more than certain value, and current sound intensity control technology research not at
It is ripe.
Oily sludge yield is huge, wherein exist largely with using energy source value based on macromolecule hydro carbons oil at
Point, valuable ingredient can be isolated by effectively handling.If burned easily or landfill stabilization, not only drop significantly
The low utilization efficiency of resource, also can cause environmental pollution.It is recycled, is given full play to by effective technological measure
The surplus value of oily sludge, achievees the purpose that recycling.Active and effective processing oily sludge, reaches discharge standard, makes it
It is finally reached minimizing, innoxious, recycling standard, is the final purpose for handling oily sludge.
Summary of the invention
The object of the present invention is to provide it is a kind of it is easy to operate, be easily achieved, low energy consumption, small investment, to technical equipment requirement
The processing method of not stringent oily sludge.Technical solution is as follows:
A kind of processing method of oily sludge, including the following steps:
Sludge, water, demulsifier, flocculant is added in (1) modifier treatment according to a certain ratio, abundant through mechanical stirring
After mixed processing, sludge is diluted as flow regime by thick；
(2) mud mixture after a modifier treatment, is carried out ultrasound by heating ultrasonic treatment after being heated to 45-55 DEG C
Processing；
(3) alkaline dispersing agent and dehydrating agent is added, to the depth not being kept completely separate in preamble is handled in secondary modifier treatment
Level oil carries out secondary modifier treatment, and further progress oil separates admittedly；
(4) it is centrifugated, will be mechanically decoupled through Horizontal helical type centrifuge by (3) step treated mixture, so that dirty
Oil in mud is separated with sewage sludge solid together with moisture；
(5) desiccation, by the sewage sludge solid after centrifuge separation using natural drying or solar energy desiccation method to its into
Row drying and other treatment, so that the moisture percentage in sewage sludge 20%-40% after desiccation；
(6) grease leafing staticly settles the oil water mixture after centrifuge separation, to oil inside gravity separator
After water stratification, the crude oil for floating on upper layer is recycled, the crude oil of recycling is sent into oil plant reuse after filtering, and the sewage of lower layer is sent back to
It recycles and uses in modifier treatment step.
The present invention be directed to oily sludge processing method, provide it is a kind of design it is reasonable, easy to operate, be easily achieved, energy
The processing method for consuming low, small investment, requiring technical equipment not stringent oily sludge.The invention has the benefit that
1. the present invention is for oily property in sludge, using adding of agent mode stage by stage, more efficiently, displacement efficiency is more
Height, medicament utilization rate are high；Using ultrasonic processing method, more quickly, efficiently；By this method, treated sewage whole times
With process system does not have wastewater disposition, reduces water resources consumption, saves medicament；Because oil content is increased, the oil of technique recycling can
To generate certain economic benefit.
2. the design of the invention is scientific and reasonable, have it is easy to operate, be easily achieved, low energy consumption, small investment, displacement efficiency are high,
The big advantage of economic benefit is a kind of processing method of oily sludge with higher innovation.
Detailed description of the invention
Fig. 1 process for treating oil-containing sludge flow chart
Specific embodiment
The present invention relates to a kind of processing methods of oily sludge, firstly, using first time modifier treatment by oily sludge by
It is thick to be diluted to flow regime, then carry out heating ultrasonic treatment, to water, oil, the preliminary three phase separation of mud, obtain separation oil and
Then solid carries out the solid separation of profound oil using second of modifier treatment, finally, oil is separated through Horizontal helical type centrifuge tool,
Dewatered sludge solid, staticly settles, oil-water-layer point, and the processing of oily sludge is completed in crude oil recycling.Whole process contains for sludge
There is characteristic to carry out modifier treatment twice, displacement efficiency is higher, and medicament utilization rate is higher.Additionally use ultrasonic wave and mechanical centrifugal
Method accelerate process, further increase the displacement efficiency of oily sludge, easy to operate, low energy consumption, realizes oily sludge
Minimizing, innoxious, recycling processing intent.
Son is described in further details the present invention in the following with reference to the drawings and specific embodiments, to be clearly understood that the present invention
Technical method.
As shown in Figure 1, a kind of processing method of oily sludge of the invention includes modifier treatment part, at heating ultrasound
Reason part and centrifuging treatment part, obtained sewage transport to sewage treatment plant, viscous crude (crude oil) return to oil plant and dirt
Mud, which carries out desiccation landfill, prevents its welding, and specific implementation steps are as follows:
Sludge, water, demulsifier, flocculant is added in (1) modifier treatment according to a certain ratio, abundant through mechanical stirring
After mixed processing, sludge is diluted as flow regime by thick；
(2) mud mixture after a modifier treatment is passed through the heat ultrasonic equipment of customization by heating ultrasonic treatment
It is ultrasonically treated, is taken out after being heated to 50 DEG C of effect 100min, contained using the mechanical concussion and cavitation processing of ultrasonic wave
Greasy dirt forms powerful turbulent flow to emulsion, to make the oil in sludge, water, because of friction overcome interface between mud three
Tension is separated from each other, and especially for the cavitation of sludge interface, can be rapidly separated oil and solid；
(3) alkaline dispersing agent and dehydrating agent is added, to the depth not being kept completely separate in preamble is handled in secondary modifier treatment
Level oil carries out secondary modifier treatment, and further progress oil separates admittedly；
(4) it is centrifugated, the oil after a modifier treatment, ultrasonic treatment and secondary modifier treatment, in sludge
It has carried out fully emulsified with water under medicament and ultrasonic treatment effect and has mixed, 3000r/ mechanically decoupled through Horizontal helical type centrifuge
15min is centrifuged under conditions of min, by the oil in sludge as moisture is separated with sewage sludge solid together；
(5) desiccation, the sewage sludge solid after centrifugal treating, which is presented, plays moulding state, and moisture content is still higher than 60%, can use
Natural drying or solar energy desiccation method carry out drying and other treatment to it, can be using temperature in order to prevent to the pollution of surrounding enviroment
Room sunlight shed carries out sludge drying processing, and the moisture percentage in sewage sludge 20%-40% after desiccation, can fill or subsequent cure is handled；
(6) grease leafing, the liquid after centrifuge separation are made of water and oil emulsion, and electrolyte or demulsifier is added, and are destroyed
The stability of emulsification system, and then realize the separation of oil with water, the oil water mixture after separation is stood inside gravity separator
Precipitating, it is different using grease density after grease layering, the crude oil for floating on upper layer is recycled, the crude oil of recycling is sent after filtering
Enter oil plant reuse, the sewage of lower layer is sent back to recycle in a modifier treatment step and be used.
Moreover, the sludge is heavy crude oily sludge.Oily sludge, thick, black have peculiar smell, oil content 26%.
Moreover, in a modifier treatment each component quality proportioning are as follows:
Moreover, the ratio of the sludge and water is 1:5.In muddy water ratio in the case where 1:5, washing effect is best.Work as mud
Water than it is excessively high when, the concentration of the demulsifiers such as neopelex reduces, and causes demulsification not significant, washed sludge contains
Oil cut rate rises, so the muddy water of 1:5 should be taken to compare ratio.
Moreover, heating temperature is 50 DEG C
Moreover, the demulsifier is neopelex, mass fraction is the 2% of sludge.Detergent alkylate
Sodium sulfonate can be by sludge as demulsifier, and oil-in-water structure is destroyed, then is broken up by the concussion of ultrasonic vibration instrument, Cavitation
Oil-in-water structure.
Moreover, the flocculant is aluminium polychloride.Flocculant of polymeric aluminium chloride keeps the water separated in oil-in-water quick
It flocculates into mud.
Moreover, the oil displacement agent is carbamide.
Moreover, in the secondary modifier treatment each component quality proportioning are as follows:
Dispersing agent 0.8-1.5g 1-1.7g 1.1-1.9g
Moreover, the dispersing agent is sodium metasilicate, mass fraction is the 1.0% of sludge.Sodium metasilicate as dispersing agent,
It is interfered in ultrasound, the effect of water-oil separating can not be played, therefore to add after ultrasonic step.
2% neopelex and 1.0% sodium metasilicate are best in quality score.When the two mass fraction is lower
It is easy to happen suction-operated, but when the concentration of neopelex reaches the critical concentration of micella, it will in solution
There is micella, if neopelex concentration increases again at this time, it will form a large amount of micella, ten to dissociate in solution
Dialkyl benzene sulfonic acids sodium molecule concentration will decline, to will lead to washing de-oiling efficiency decline.
This process for treating oil-containing sludge has carried out following specific example three times, to thick, black, has peculiar smell, oil content
26% oily sludge is handled, and wherein the material mixture ratio of modifier treatment is as shown in the table.
The material mixture ratio of 1 modifier treatment of table
The above mentioned embodiment is only schematical, is not restrictive, those skilled in the art
Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very
It is multi-form, within these are all belonged to the scope of protection of the present invention.
Claims (5)
1. a kind of processing method of oily sludge, including the following steps:
Sludge, water, demulsifier, flocculant are added according to a certain ratio, is sufficiently mixed through mechanical stirring for (1) modifier treatment
After processing, sludge is diluted as flow regime by thick.
(2) heating ultrasonic treatment, the mud mixture after a modifier treatment is carried out at ultrasound after being heated to 45-55 DEG C
Reason；
(3) alkaline dispersing agent and dehydrating agent is added, to the profound level not being kept completely separate in preamble is handled in secondary modifier treatment
Oil carries out secondary modifier treatment, and further progress oil separates admittedly；
(4) it is centrifugated, will be mechanically decoupled through Horizontal helical type centrifuge by (3) step treated mixture, so that in sludge
Oil separated with sewage sludge solid together with moisture；
(5) desiccation does the sewage sludge solid after centrifuge separation using natural drying or solar energy desiccation method to it
Change processing, so that the moisture percentage in sewage sludge 20%-40% after desiccation；
(6) grease leafing staticly settles the oil water mixture after centrifuge separation inside gravity separator, to grease point
After layer, the crude oil for floating on upper layer is recycled, the crude oil of recycling is sent into oil plant reuse after filtering, and the sewage of lower layer is sent back to once
It recycles and uses in modifier treatment step.
2. processing method according to claim 1, which is characterized in that the ratio of sludge and water is 1 in a modifier treatment:
4.5-5.5。
3. processing method according to claim 1, which is characterized in that use dodecyl benzene sulfonic acid in a modifier treatment
For sodium as demulsifier, mass fraction is the 2% of oily sludge.
4. processing method according to claim 1, which is characterized in that the flocculant used in a modifier treatment is polymerization
Aluminium chloride, the oil displacement agent used is carbamide.
5. processing method according to claim 1, which is characterized in that the dispersing agent used in a modifier treatment is silicic acid
Sodium, mass fraction are the 1.0% of sludge.
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| CN111170542A (en) * | 2020-01-16 | 2020-05-19 | 海积(北京)科技有限公司 | Normal-pressure electric desalting backwashing wastewater treatment device |
| CN111186975A (en) * | 2020-03-11 | 2020-05-22 | 金碳环境科技（天津）有限公司 | Ultrasonic oil stain treatment process |
| CN112551838A (en) * | 2020-12-03 | 2021-03-26 | 深圳市科拉达精细化工有限公司 | Treatment method of high-water-content oil sludge |
| CN112661384A (en) * | 2020-12-03 | 2021-04-16 | 深圳市科拉达精细化工有限公司 | Method for reconstructing high-water-content oil sludge |
| CN113045152A (en) * | 2021-03-29 | 2021-06-29 | 辽宁石油化工大学 | Drying method for sludge containing oil and device adopted by drying method |
| CN114538746A (en) * | 2022-03-01 | 2022-05-27 | 陕西化工研究院有限公司 | Treatment method for separating oil sludge and sewage |
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| CN111170542A (en) * | 2020-01-16 | 2020-05-19 | 海积(北京)科技有限公司 | Normal-pressure electric desalting backwashing wastewater treatment device |
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| CN113045152A (en) * | 2021-03-29 | 2021-06-29 | 辽宁石油化工大学 | Drying method for sludge containing oil and device adopted by drying method |
| CN114538746A (en) * | 2022-03-01 | 2022-05-27 | 陕西化工研究院有限公司 | Treatment method for separating oil sludge and sewage |
| CN114538746B (en) * | 2022-03-01 | 2024-05-14 | 陕西化工研究院有限公司 | Treatment method for separating oil sludge and sewage |
| CN114702977A (en) * | 2022-03-28 | 2022-07-05 | 江苏天鹏龙辉环境科技有限公司 | Method for treating oil sludge difficult to treat in electric desalting tank of petrochemical enterprise |
| CN114702977B (en) * | 2022-03-28 | 2024-03-19 | 江苏天鹏龙辉环境科技有限公司 | Method for treating difficult-to-treat oil sludge in petrochemical enterprise electric desalting tank |
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