CN107879572A - A kind of processing method of oily sludge - Google Patents
A kind of processing method of oily sludge Download PDFInfo
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- CN107879572A CN107879572A CN201711189749.5A CN201711189749A CN107879572A CN 107879572 A CN107879572 A CN 107879572A CN 201711189749 A CN201711189749 A CN 201711189749A CN 107879572 A CN107879572 A CN 107879572A
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- 239000010802 sludge Substances 0.000 title claims abstract description 110
- 238000003672 processing method Methods 0.000 title claims abstract description 22
- 239000003607 modifier Substances 0.000 claims abstract description 41
- 239000003921 oil Substances 0.000 claims description 86
- 235000019198 oils Nutrition 0.000 claims description 83
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 51
- 238000000034 method Methods 0.000 claims description 37
- 239000007787 solid Substances 0.000 claims description 31
- 238000000926 separation method Methods 0.000 claims description 18
- 238000001035 drying Methods 0.000 claims description 15
- 239000010801 sewage sludge Substances 0.000 claims description 15
- 239000010779 crude oil Substances 0.000 claims description 14
- 239000000839 emulsion Substances 0.000 claims description 14
- 238000012545 processing Methods 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 11
- 230000000694 effects Effects 0.000 claims description 10
- 239000003814 drug Substances 0.000 claims description 8
- 238000011084 recovery Methods 0.000 claims description 8
- 239000002270 dispersing agent Substances 0.000 claims description 7
- 238000005188 flotation Methods 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 230000009514 concussion Effects 0.000 claims description 6
- 239000012024 dehydrating agents Substances 0.000 claims description 6
- 238000004945 emulsification Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 239000010865 sewage Substances 0.000 claims description 6
- 238000013019 agitation Methods 0.000 claims description 5
- 238000005119 centrifugation Methods 0.000 claims description 5
- 239000003792 electrolyte Substances 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 238000007667 floating Methods 0.000 claims description 5
- 230000005484 gravity Effects 0.000 claims description 5
- 239000011499 joint compound Substances 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 5
- 235000019476 oil-water mixture Nutrition 0.000 claims description 5
- 230000001869 rapid Effects 0.000 claims description 5
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 4
- -1 Sodium alkyl benzene Chemical class 0.000 claims description 3
- 238000007670 refining Methods 0.000 claims description 2
- 239000011734 sodium Substances 0.000 claims description 2
- 229910052708 sodium Inorganic materials 0.000 claims description 2
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims 1
- 229940077388 benzenesulfonate 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
- 239000002893 slag Substances 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 238000013461 design Methods 0.000 abstract description 3
- 238000006073 displacement reaction Methods 0.000 abstract description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 12
- 239000004115 Sodium Silicate Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 239000000377 silicon dioxide Substances 0.000 description 6
- 235000019795 sodium metasilicate Nutrition 0.000 description 6
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical group [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 6
- 229910052911 sodium silicate Inorganic materials 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 229920002401 polyacrylamide Polymers 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 239000004411 aluminium Substances 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 238000001556 precipitation Methods 0.000 description 4
- 238000009279 wet oxidation reaction Methods 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 238000000605 extraction Methods 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
- 239000002689 soil Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 238000007500 overflow downdraw method Methods 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 1
- 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
- 150000001454 anthracenes Chemical class 0.000 description 1
- 239000008346 aqueous phase Substances 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
- 230000009286 beneficial effect Effects 0.000 description 1
- LPTWEDZIPSKWDG-UHFFFAOYSA-N benzenesulfonic acid;dodecane Chemical compound OS(=O)(=O)C1=CC=CC=C1.CCCCCCCCCCCC LPTWEDZIPSKWDG-UHFFFAOYSA-N 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910001431 copper ion Inorganic materials 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
- 239000013078 crystal Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 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
- 229940060296 dodecylbenzenesulfonic acid Drugs 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- DNJIEGIFACGWOD-UHFFFAOYSA-N ethanethiol Chemical compound CCS DNJIEGIFACGWOD-UHFFFAOYSA-N 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000284 extract Substances 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
- 229910052742 iron Inorganic materials 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000010358 mechanical oscillation Effects 0.000 description 1
- 239000002207 metabolite Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 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
- 238000005457 optimization Methods 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000003208 petroleum Substances 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
- 230000000704 physical effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 238000002604 ultrasonography Methods 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
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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
-
- 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
- C02F11/14—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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- Treatment Of Sludge (AREA)
- Physical Water Treatments (AREA)
Abstract
The present invention relates to a kind of processing method of oily sludge, it is characterised in that：Comprise the following steps：(1) modifier treatment；(2) it is ultrasonically treated；(3) secondary modifier treatment；(4) centrifuge；(5) desiccation；(6) profit leafing.The design of the invention is scientific and reasonable, have it is simple to operate, be easily achieved, the advantages of energy consumption is low, small investment, displacement efficiency are high, economic benefit is big, be a kind of processing method of the oily sludge with higher innovation.
Description
Technical field
The present invention relates to the process field of sludge, and in particular to a kind of processing method of oily sludge.
Background technology
As the world is continuously increased to the demand of oil and mineral products, surging oil and mineral products price, each oil 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, the mixing for the variform that oil therein can not directly reclaim and may cause environmental pollution
Thing.General oil content is 10%~50% in greasy filth, and 40%~90%, its yield is also rising moisture content year by year.Containing greasy dirt
Mud is a kind of multiphase dispersion rich in mineral oil, and composition is complicated, be by clay particle, organic matter, flco, microorganism and its
The sludge that metabolite, mineral matter etc. are mixed to form.Typically by oil-in-water (O/W), Water-In-Oil (W/O) and suspended solid impurities
Composition, due to the obstacle that aquation, one or more layers water invest particle surface and cause particle mutually to polymerize, simultaneously because
Grain charging property and mutually repel, flco 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
Particularly during well recovery production and Downhole Construction, part crude oil open flow or by oil pipe, sucker rod, pump and other wells
Lower instrument, which is carried to native oil ground or well site, these crude oil, penetrates into surface soil, forms greasy filth and is referred to as ground sludge；(2) various storages
Oil tank can also produce some greasy filth in natural subsidence and be referred to as tank bottom mud；(3) mud of oil plant three, including：Oil interceptor bed mud, molten gas
Flotation scum silica frost and residual active sludge etc., wherein using flotation scum silica frost amount as maximum, account for the 80% of three mud total amounts.
The yield of oily sludge is huge.According to statistics, medium-scale 100 tons of oil field day greasy filth amount stacks total amount at 400,000 tons
More than.The materials such as the benzene homologues that are typically contained in these sludge, phenols, anthracene class, and with stench and toxicity, if directly and natural
Environment contacts, and will cause larger pollution to soil, water body and vegetation, while also imply that the waste of petroleum resources.Therefore, nothing
By being from environmental protection or from the point of view of the recovery energy, should all harmless clean processing be carried out to oily sludge.
Oily sludge composition can be roughly divided into water, oil emulsion or adsorb oil, solid foreign materials, inorganic salts etc., and greasy filth is in water
In typically in stable suspension emulsion system, it is hydrated and charging property forms stable dispersity, is difficult to realize multiphase
Separation, so as to add the difficulty for the treatment of technology and cost.And a variety of possibilities of the matrix due to carrying oils, general designation contain
Greasy dirt composition is extremely complex, containing chemical substances such as phosphorus, arsenic, heavy metal, difficult degradation hydrocarbons, radioactive elements, and
The water such as the corrosion inhibiter that is added in a large amount of aged crude oil, wax, asphalitine, colloids, in addition to production process, flocculating agent, antisludging agent
Inorganic agent, each physical property is different, therefore treatment technology also has various requirement.
At the same time, a large amount of existing oil components contain substantial amounts of using energy source value in oily sludge, and oil component is main
Based on macromolecule hydro carbons, containing a large amount of chemical energy, though it is difficult to directly utilize as thermal source, can be by effectively handling
Isolate valuable composition.And if burned easily or landfill stabilization, greatly reduce the utilization ratio of resource.Cause
This is recycled by effective technological measure, gives full play to the surplus value of sludge, reaches the purpose of recycling.Cause
This, active and effective processing oily sludge, reaches discharge standard, it is finally reached minimizing, innoxious, recycling mark
Standard, it is the final purpose for handling oily sludge.
In the prior art, the common practices for handling oily sludge is：
(1) chemico-heating wash method
Chemico-heating wash method is to wash oily sludge repeatedly using the thermokalite aqueous solution, and water, chemical drugs are commonly incorporated into washing process
Staticly settled after the materials such as agent, greasy filth, then heated, mixing, separation of solid and liquid is realized by air supporting, in the aqueous phase isolated
Add clear water and detergent carries out repeated washing.After oil content is down to 3% in sludge, solidification can be further taken to fill or burn
Burn and generate electricity.The processing step is cumbersome, and it is more inconvenient to implement, and in China, application is less.
(2) extraction
Extraction is according to " similar to mix " principle, by adding specific reagent, extracts the oils in oily sludge
Material, and solvent is separated from solution and recycled, so as to reach the purpose for reclaiming valuable oily substance.Extraction
Agent is taken to rely on itself ability being combined with oily substance more stronger than water, and property not compatible with water, by oily substance
Rob and dispossess from the encirclement of moisture film, improve the effect of follow-up mud-water separation.But this method is above faced with two disasters in application
Topic, one is a lack of a kind of efficient, cheap extractant；Second, the problem of loss of extractant, is not yet solved well.
(3) pyrolysismethod
The pyrolysis of oily sludge is in the presence of catalyst, and in anaerobic, pressure-fired, will under conditions of 250~500 DEG C
Oil in oily sludge is converted, separated and reclaimed by the process such as distilling, thermally decomposing.
Its pyrolytic reaction is relevant with the rate of heat addition, heating-up temperature and raw material composition.In the presence of high temperature, light component with
Moisture is heated to be evaporated, and heavy constituent decomposition and inversion heated first is that light component re-evaporation comes out, evaporation cooling occur gas phase with
Liquid phase, the recyclable part energy, and the solid phase not being evaporated is silt and carbon residue, and it is substantially harmless to environment, can emission treatment.
But the shortcomings of equipment investment is big, technical requirements are high be present in this method, and technical research at present and immature,
Therefore application is also less.
(4) ultrasonic method
Ultrasonic method is in different oil emulsions, by the frequency, radiated time, the temperature that control ultrasonic wave by ul-trasonic irradiation
Degree and sedimentation time handle oily sludge of different nature, so as to reach optimization process effect.Ultrasonic wave is for oily sludge
Effect mainly have two kinds of mechanism.First, mechanical oscillation act on, powerful turbulent flow is formed by emulsion, so that in sludge
Interfacial tension is overcome because of friction between oil, water, sludge three-phase, is separated from each other, reaches dehydrating effect；Second, acoustic cavitation acts on,
Especially for the cavitation at greasy filth interface, oily and electrodeless solid can be rapidly separated.
But this method has corrosiveness to solid, the sound intensity can also produce emulsification, therefore rationally control when exceeding certain value
The sound intensity is also the emphasis of research.
(5) fusion method is freezed
Freezing fusion method is by using the moisture adiabatic condensation temperature different from oil ingredient, makes the feelings of water generation ice crystal in freezing
Oil ingredient is separated under condition, so as to improve the processing method of sludge settling performance and dewatering.When being chilled to certain temperature
When, can preferably destroy colloid stability and solid it is biological, so as to further increase the sedimentation function of sludge and
Dewatering.
But this method its technological parameter and insufficient in operation, and energy consumption is higher, so being difficult to push away on a large scale at present
Extensively.
(6) wet oxidation process
Wet oxidation process be under high-temperature and high-pressure conditions, using oxidant by oxidation operation into carbon dioxide, water and its
His small organic molecule, so as to reach the purpose for removing pollutant.Metal salt is to utilizing wet oxidation process processing oily sludge tool
There is catalytic action.Under conditions of certain temperature and partial pressure of oxygen, copper ion, iron ion and the two synergy can be carried significantly
Treatment effeciency of the high wet oxidation process to oily sludge.The technology is applied widely, and treatment effeciency is high, seldom produces secondary dirt
Dye, recoverable energy and useful material.But because the operating condition of this method is high temperature, high pressure, so energy consumption is larger, and
And it can only remove the organic matter in oily sludge, so being only suitable for the preprocess method as oily sludge.
The content of the invention
The present invention is the defects of above-mentioned technology of solution, there is provided one kind is reasonable in design, simple to operate, is easily achieved, energy consumption
Low, small investment, the processing method to the not strict oily sludge of technical requirements.
The present invention solves its technical problem and is achieved through the following technical solutions：
A kind of processing method of oily sludge, it is characterised in that：Comprise the following steps：
(1) modifier treatment, sludge, water, demulsifier, flocculant are added according to a certain ratio, it is abundant through mechanical agitation
After mixed processing, sludge is diluted as flow regime by thick；
(2) it is ultrasonically treated, the mud mixture after a modifier treatment is ultrasonically treated by ultrasonic equipment, makees
With being taken out after 30min, oily sludge is handled using the machinery concussion of ultrasonic wave and cavitation, powerful rapids is formed to emulsion
Flow, so that overcoming interfacial tension because of friction between the oil, water, mud three in sludge, be separated from each other, especially for sludge
The cavitation at interface, oil and solid can be rapidly separated；
(3) secondary modifier treatment, alkaline dispersing agent and dehydrating agent are added, to the depth not being kept completely separate in being handled in preamble
Level oil carries out secondary modifier treatment, further carries out the solid separation of oil；
(4) centrifuge, after a modifier treatment, supersound process and secondary modifier treatment, the oil in sludge
Carry out fully emulsified with water under medicament and supersound process effect and 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 used
Natural drying or solar energy desiccation method carry out drying and other treatment to it, in order to prevent the pollution to surrounding enviroment, can use temperature
Room sunlight shed carries out sludge drying processing, and the moisture percentage in sewage sludge 20%-40% after desiccation, can be filled or subsequent cure is handled；
(6) profit leafing, the liquid after centrifugation are made up of water and oil emulsion, add electrolyte or demulsifier, are destroyed
The stability of emulsification system, and then the separation of oil and water is realized, the oil water mixture after separation is stood inside gravity separator
Precipitation, it is different using profit density after profit layering, the crude oil for floating over upper strata is reclaimed, the crude oil of recovery is sent after filtering
Enter oil plant reuse, the sewage of lower floor is sent back to reclaim in a modifier treatment step and used.
Moreover, described sludge is flotation scum silica frost oily sludge, thick, black, there is peculiar smell, oil content 11.9%, contain
Water rate 62.6%, 600 DEG C of loss on ignitions of solid are 70.7%.
Moreover, the quality proportioning of each component is in a modifier treatment：
Moreover, the ratio of the sludge and water is 1:5.In muddy water ratio 1:In the case of 5, clean result is best.Work as mud
Water than it is too high when, the concentration of the demulsifier such as neopelex reduces, and causes demulsification not notable, scrubbed sludge contains
Oil cut rate rises, so 1 should be taken:5 muddy water compares ratio.
Moreover, described demulsifier is neopelex, its mass fraction is the 0.5% of sludge.Dodecyl
Benzene sulfonic acid sodium salt can be by sludge as demulsifier, and oil-in-water structure is destroyed, then is beaten by the concussion of ultrasonic vibration instrument, Cavitation
Dissipate oil-in-water structure.
Moreover, described flocculant is aluminium polychloride.Flocculant of polymeric aluminium chloride makes the water that is separated in oil-in-water quick
Flocculate into mud.
Moreover, the quality proportioning of each component is in the secondary modifier treatment：
Dispersant 0.8-1.5g 1-1.7g 1.1-1.9g
Dehydrating agent 1.2-2.4g 1.26-2.52g 1.32-2.64g
Moreover, described dispersant is sodium metasilicate, its mass fraction is the 1.0% of sludge.Sodium metasilicate as dispersant,
It is interfered in ultrasound, the effect of water-oil separating can not be played, therefore to be added after ultrasonic step.
Moreover, described dehydrating agent is polyacrylamide.Polyacrylamide contributes to water-oil separating as dehydrating agent.
0.5% neopelex and 1.0% sodium metasilicate are best in quality fraction.The two mass fraction is relatively low
Suction-operated occurs for Shi Rongyi, but when the concentration of neopelex reaches the critical concentration of micella, will in solution
Micella occurs, if now neopelex concentration increases again, it will form substantial amounts of micella, dissociate in solution
Neopelex molecular concentration will decline, and decline so as to cause to wash de-oiling efficiency.
Beneficial effects of the present invention are：
1. the processing method of an oily sludge, for oily property in sludge, using adding of agent mode stage by stage, more
Efficiently, displacement efficiency is higher, and medicament utilization rate is high；Using ultrasonic processing method, more quickly, efficiently；At this method
Sewage fully recovering after reason, process system do not have wastewater disposition, reduce water resources consumption, save medicament；Because oil content is increased,
The oil of technique recovery can produce certain economic benefit.
2. the design of the invention is scientific and reasonable, have it is simple to operate, be easily achieved, energy consumption is low, small investment, displacement efficiency are high,
The advantages of economic benefit is big, it is a kind of processing method of the oily sludge with higher innovation.
Brief description of the drawings
Fig. 1 is the process chart of the present invention；
Fig. 2 is the schematic diagram that muddy water of the present invention compares that oil content influences in sludge；
Fig. 3 is the schematic diagram that demulsifier adding proportion of the present invention and dispersant adding proportion influence on sludge oil content.
Embodiment
Below by specific embodiment, the invention will be further described, and following examples are descriptive, is not limit
Qualitatively, it is impossible to which protection scope of the present invention is limited with this.
Embodiment 1
A kind of processing method of oily sludge, its innovation are：Comprise the following steps：
(1) modifier treatment, by sludge 100g, water 500g, neopelex 0.5g, aluminium polychloride
0.9g, after mechanical agitation is sufficiently mixed processing, sludge is diluted as flow regime by thick；
(2) it is ultrasonically treated, the mud mixture after a modifier treatment is ultrasonically treated by ultrasonic equipment, makees
With being taken out after 30min, oily sludge is handled using the machinery concussion of ultrasonic wave and cavitation, powerful rapids is formed to emulsion
Flow, so that overcoming interfacial tension because of friction between the oil, water, mud three in sludge, be separated from each other, especially for sludge
The cavitation at interface, oil and solid can be rapidly separated；
(3) secondary modifier treatment, sodium metasilicate 1g and polyacrylamide 1.8g is added, to not dividing completely in being handled in preamble
From profound oil carry out secondary modifier treatment, further carry out the solid separation of oil；
(4) centrifuge, after a modifier treatment, supersound process and secondary modifier treatment, the oil in sludge
Carry out fully emulsified with water under medicament and supersound process effect and 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 used
Natural drying or solar energy desiccation method carry out drying and other treatment to it, in order to prevent the pollution to surrounding enviroment, can use temperature
Room sunlight shed carries out sludge drying processing, and the moisture percentage in sewage sludge 20%-40% after desiccation, can be filled or subsequent cure is handled；
(6) profit leafing, the liquid after centrifugation are made up of water and oil emulsion, add electrolyte or demulsifier, are destroyed
The stability of emulsification system, and then the separation of oil and water is realized, the oil water mixture after separation is stood inside gravity separator
Precipitation, it is different using profit density after profit layering, the crude oil for floating over upper strata is reclaimed, the crude oil of recovery is sent after filtering
Enter oil plant reuse, the sewage of lower floor is sent back to reclaim in a modifier treatment step and used.
Described sludge is flotation scum silica frost oily sludge, thick, black, there is peculiar smell, oil content 11.9%, moisture content
62.6%, 600 DEG C of loss on ignitions of solid are 70.7%.
Embodiment 2
(1) modifier treatment, by sludge 105g, water 525g, neopelex 0.525g, aluminium polychloride
1.4g, after mechanical agitation is sufficiently mixed processing, sludge is diluted as flow regime by thick；
(2) it is ultrasonically treated, the mud mixture after a modifier treatment is ultrasonically treated by ultrasonic equipment, makees
With being taken out after 30min, oily sludge is handled using the machinery concussion of ultrasonic wave and cavitation, powerful rapids is formed to emulsion
Flow, so that overcoming interfacial tension because of friction between the oil, water, mud three in sludge, be separated from each other, especially for sludge
The cavitation at interface, oil and solid can be rapidly separated；
(3) secondary modifier treatment, sodium metasilicate 1.05g and polyacrylamide 1.26g is added, to not complete in being handled in preamble
Fully separating profound oil carries out secondary modifier treatment, further carries out the solid separation of oil；
(4) centrifuge, after a modifier treatment, supersound process and secondary modifier treatment, the oil in sludge
Carry out fully emulsified with water under medicament and supersound process effect and 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 used
Natural drying or solar energy desiccation method carry out drying and other treatment to it, in order to prevent the pollution to surrounding enviroment, can use temperature
Room sunlight shed carries out sludge drying processing, and the moisture percentage in sewage sludge 20%-40% after desiccation, can be filled or subsequent cure is handled；
(6) profit leafing, the liquid after centrifugation are made up of water and oil emulsion, add electrolyte or demulsifier, are destroyed
The stability of emulsification system, and then the separation of oil and water is realized, the oil water mixture after separation is stood inside gravity separator
Precipitation, it is different using profit density after profit layering, the crude oil for floating over upper strata is reclaimed, the crude oil of recovery is sent after filtering
Enter oil plant reuse, the sewage of lower floor is sent back to reclaim in a modifier treatment step and used.
Described sludge is flotation scum silica frost oily sludge, thick, black, there is peculiar smell, oil content 11.9%, moisture content
62.6%, 600 DEG C of loss on ignitions of solid are 70.7%.
Embodiment 3
A kind of processing method of oily sludge, its innovation are：Comprise the following steps：
(1) modifier treatment, by sludge 110g, water 550g, neopelex 0.55g, aluminium polychloride
1.3g, after mechanical agitation is sufficiently mixed processing, sludge is diluted as flow regime by thick；
(2) it is ultrasonically treated, the mud mixture after a modifier treatment is ultrasonically treated by ultrasonic equipment, makees
With being taken out after 30min, oily sludge is handled using the machinery concussion of ultrasonic wave and cavitation, powerful rapids is formed to emulsion
Flow, so that overcoming interfacial tension because of friction between the oil, water, mud three in sludge, be separated from each other, especially for sludge
The cavitation at interface, oil and solid can be rapidly separated；
(3) secondary modifier treatment, sodium metasilicate 1.1g and polyacrylamide 1.32g is added, to not complete in being handled in preamble
Fully separating profound oil carries out secondary modifier treatment, further carries out the solid separation of oil；
(4) centrifuge, after a modifier treatment, supersound process and secondary modifier treatment, the oil in sludge
Carry out fully emulsified with water under medicament and supersound process effect and 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 used
Natural drying or solar energy desiccation method carry out drying and other treatment to it, in order to prevent the pollution to surrounding enviroment, can use temperature
Room sunlight shed carries out sludge drying processing, and the moisture percentage in sewage sludge 20%-40% after desiccation, can be filled or subsequent cure is handled；
(6) profit leafing, the liquid after centrifugation are made up of water and oil emulsion, add electrolyte or demulsifier, are destroyed
The stability of emulsification system, and then the separation of oil and water is realized, the oil water mixture after separation is stood inside gravity separator
Precipitation, it is different using profit density after profit layering, the crude oil for floating over upper strata is reclaimed, the crude oil of recovery is sent after filtering
Enter oil plant reuse, the sewage of lower floor is sent back to reclaim in a modifier treatment step and used.
Described sludge is flotation scum silica frost oily sludge, thick, black, there is peculiar smell, oil content 11.9%, moisture content
62.6%, 600 DEG C of loss on ignitions of solid are 70.7%.
Although above in conjunction with accompanying drawing, invention has been described, and the invention is not limited in above-mentioned specific implementation
Mode, above-mentioned embodiment is only schematical, is not restricted, one of ordinary skill in the art is at this
Under the enlightenment of invention, in the case of present inventive concept and scope of the claimed protection is not departed from, many shapes can also be made
Formula, these are belonged within protection scope of the present invention.
Claims (9)
- A kind of 1. processing method of oily sludge, it is characterised in that：Comprise the following steps：(1) modifier treatment, sludge, water, demulsifier, flocculant are added according to a certain ratio, is sufficiently mixed through mechanical agitation After processing, sludge is diluted as flow regime by thick；(2) it is ultrasonically treated, the mud mixture after a modifier treatment is ultrasonically treated by ultrasonic equipment, acts on Taken out after 30min, handle oily sludge using the machinery concussion of ultrasonic wave and cavitation, powerful rapids is formed to emulsion Flow, so that overcoming interfacial tension because of friction between the oil, water, mud three in sludge, be separated from each other, especially for sludge The cavitation at interface, oil and solid can be rapidly separated；(3) secondary modifier treatment, alkaline dispersing agent and dehydrating agent are added, to the profound level not being kept completely separate in being handled in preamble Oil carries out secondary modifier treatment, further carries out the solid separation of oil；(4) centrifuge, after a modifier treatment, supersound process and secondary modifier treatment, the oil in sludge is in medicine Carry out fully emulsified with water and mixed under agent and supersound process effect, it is mechanically decoupled through Horizontal helical type centrifuge, 3000r/min's Under the conditions of centrifuge 15min, 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 nature Drying or solar energy desiccation method carry out drying and other treatment to it, in order to prevent the pollution to surrounding enviroment, can use greenhouse sun Light canopy carries out sludge drying processing, and the moisture percentage in sewage sludge 20%-40% after desiccation, can be filled or subsequent cure is handled；(6) profit leafing, the liquid after centrifugation are made up of water and oil emulsion, add electrolyte or demulsifier, destroy emulsification The stability of system, and then the separation of oil and water is realized, the oil water mixture after separation staticly settles inside gravity separator, It is different using profit density after profit layering, the crude oil for floating over upper strata is reclaimed, the crude oil of recovery is sent into oil refining after filtering Factory's reuse, the sewage of lower floor are sent back to reclaim in a modifier treatment step and used.
- A kind of 2. processing method of oily sludge according to claim 1, it is characterised in that：Described sludge floats for flotation Slag oily sludge, thick, black have a peculiar smell, oil content 11.9%, moisture content 62.6%, and 600 DEG C of loss on ignitions of solid are 70.7%.
- A kind of 3. processing method of oily sludge according to claim 1, it is characterised in that：In modifier treatment The quality proportioning of each component is：。
- A kind of 4. processing method of oily sludge according to claim 1, it is characterised in that：The ratio of the sludge and water For 1:5.
- A kind of 5. processing method of oily sludge according to claim 1, it is characterised in that：Described demulsifier is 12 Sodium alkyl benzene sulfonate, its mass fraction are the 0.5% of sludge.
- A kind of 6. processing method of oily sludge according to claim 1, it is characterised in that：Described flocculant is polymerization Aluminium chloride.
- A kind of 7. processing method of oily sludge according to claim 1, it is characterised in that：In the secondary modifier treatment The quality proportioning of each component is：。
- A kind of 8. processing method of oily sludge according to claim 1, it is characterised in that：Described dispersant is silicic acid Sodium, its mass fraction are the 1.0% of sludge.
- A kind of 9. processing method of oily sludge according to claim 1, it is characterised in that：Described dehydrating agent is poly- third Acrylamide.
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