CN100371083C - Method for treating carbonate sands polluted by overflowed oil at coastal beach - Google Patents
Method for treating carbonate sands polluted by overflowed oil at coastal beach Download PDFInfo
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- CN100371083C CN100371083C CNB2005100226259A CN200510022625A CN100371083C CN 100371083 C CN100371083 C CN 100371083C CN B2005100226259 A CNB2005100226259 A CN B2005100226259A CN 200510022625 A CN200510022625 A CN 200510022625A CN 100371083 C CN100371083 C CN 100371083C
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- 238000000034 method Methods 0.000 title claims abstract description 31
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 title claims abstract description 26
- 239000004576 sand Substances 0.000 claims abstract description 45
- 239000013535 sea water Substances 0.000 claims abstract description 36
- 239000003921 oil Substances 0.000 claims abstract description 30
- 238000000926 separation method Methods 0.000 claims abstract description 27
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 17
- 239000010779 crude oil Substances 0.000 claims abstract description 15
- 239000003814 drug Substances 0.000 claims description 23
- 239000003305 oil spill Substances 0.000 claims description 23
- 230000006872 improvement Effects 0.000 claims description 15
- 239000003112 inhibitor Substances 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000013019 agitation Methods 0.000 claims description 11
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- -1 alkyl quaternary ammonium salts Chemical class 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- 241001272567 Hominoidea Species 0.000 claims description 5
- 150000001412 amines Chemical class 0.000 claims description 5
- 239000004375 Dextrin Substances 0.000 claims description 4
- 229920001353 Dextrin Polymers 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 235000019425 dextrin Nutrition 0.000 claims description 4
- 235000019353 potassium silicate Nutrition 0.000 claims description 4
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 3
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 3
- 229920002472 Starch Polymers 0.000 claims description 3
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 3
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 3
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 3
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 3
- 239000008107 starch Substances 0.000 claims description 3
- 235000019698 starch Nutrition 0.000 claims description 3
- 229920001864 tannin Polymers 0.000 claims description 3
- 239000001648 tannin Substances 0.000 claims description 3
- 235000018553 tannin Nutrition 0.000 claims description 3
- 238000004945 emulsification Methods 0.000 claims description 2
- 239000012467 final product Substances 0.000 claims description 2
- 238000006116 polymerization reaction Methods 0.000 claims description 2
- 238000002203 pretreatment Methods 0.000 claims 1
- 239000003027 oil sand Substances 0.000 abstract description 24
- 238000010907 mechanical stirring Methods 0.000 abstract description 8
- 238000005265 energy consumption Methods 0.000 abstract description 2
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- 230000015271 coagulation Effects 0.000 abstract 1
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- 238000011017 operating method Methods 0.000 description 4
- 239000004615 ingredient Substances 0.000 description 3
- 238000007781 pre-processing Methods 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
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- 239000000047 product Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- NFAOATPOYUWEHM-UHFFFAOYSA-N 2-(6-methylheptyl)phenol Chemical compound CC(C)CCCCCC1=CC=CC=C1O NFAOATPOYUWEHM-UHFFFAOYSA-N 0.000 description 1
- CYEJMVLDXAUOPN-UHFFFAOYSA-N 2-dodecylphenol Chemical compound CCCCCCCCCCCCC1=CC=CC=C1O CYEJMVLDXAUOPN-UHFFFAOYSA-N 0.000 description 1
- 241000208340 Araliaceae Species 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 240000003793 Rhizophora mangle Species 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000009360 aquaculture Methods 0.000 description 1
- 244000144974 aquaculture Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000012043 crude product Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
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- 238000009736 wetting Methods 0.000 description 1
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Abstract
The present invention discloses a method for treating the carbonate beach-sand polluted by overflow oil. In the method, the carbonate beach-sand, a separation agent and a small amount of sea water are added to a pretreatment tank for mechanical stirring and ultrasonic pretreatment; then, the sea water is replenished to a separation tank for the mechanical stirring and separation; the oil-sand separation efficiency can be more than 90 percent. The method can be applied to the treatment of the carbonate beach-sand polluted by various kinds of crude oil (particularly the crude oil with high coagulation and high viscosity), and can be applied to the separation of the dry sand and wet beach-sand which are polluted by the oil and are above a high-tide line. The invention can realize the operation under the ambient temperature by using the sea water as a separation medium, so that the transportation cost and the energy consumption of the operation are greatly reduced. Meanwhile, the separation agent has the lower cost, and is friendly to the environment without secondary pollution. The separation method is simple and easy for operation, and has low requirements for devices and operation conditions and very high separation efficiency.
Description
Technical field
The invention belongs to the prevention and cure of pollution field, relate to a kind of improvement method that is subjected to the carbonate matter seabeach sand grains of oil spill.
Background technology
China's rapid development of economy makes China to the energy, especially the demand rapid growth of crude oil and product oil.The crude oil import amount of China in 2004 surpasses 1.2 hundred million tons, and the product oil import volume of the same period also reaches nearly 4,000 ten thousand tons.The imported crude oil of China is many from the Middle East and Africa, and these crude oil adopt the ocean tanker transportation more.Marine transportation is subjected to the influence of natural conditions very big, in case large-scale oil spill accident takes place, will be to the harm of marine ecology, fishery, bringing on a disaster property of aquaculture.As " prestige number " oil spill accident, leak crude oil and reach more than 20,000 ton, 500 kilometers marine site, 183 seabeaches are subjected to severe contamination.
Improvement to the seabeach that is subjected to oil spill only limits to some simple processing methods, at present as biological restoration, mechanical means, chemical method and original position burning etc.These methods are existing in practice to be used, and has shown certain effect.But because the processing time that needs is long, or weak effect, or, still lack desirable treatment technology at present to reasons such as bio-toxicity are too big.Though the biological restoration treatment effect is good and environmentally friendly, its required cycle is longer, and owing to be subjected to the restriction of biological tolerance, so be used for the improvement that low concentration pollutes more.The machinery means often need great amount of manpower and material resources, and the staff works under the high density pollution condition for a long time, and are serious to the harm of health, need take strict safe precaution measure.Simultaneously, this method needs that contaminated sand is carried out dystopy and handles, and as burning, landfill etc., otherwise can cause secondary pollution.Toxicity such as the detergent that adds in the chemical Treatment process, buck are very big, and to the biology at seabeach, especially the intertidal zone biology often causes fatal harm.The limitation that original position is burned is very big, generally only is applied to be subjected to the processing of the shrub, mangrove etc. of oil spilling severe contamination.Above treatment technology is used for being subjected to the improvement of the sand waste that light oil pollutes more.For the pollution that high pour point and viscous crude oil causes, has only the method for manually rooting out at present.Artificial eradicant eating not only needs to consume great amount of manpower, and labour intensity is big, and condition of work is abominable, and greasy dirt thoroughly can not be removed by rooting out, and treatment effect is also very undesirable.
In addition, from the wetting adhesiveness analysis of mineral to oil product, compare with quartziferous beach sand grains, the lipophile of carbonate matter beach sand grains is higher, has therefore also increased the difficulty of repairing the carbonate matter beach sand grains that is subjected to oil spill.
In sum, carbonate matter beach sand grains, the especially pollution that causes for high pour point and viscous crude oil for being subjected to oil spill still lack good separating effect, improvement technology easy and simple to handle, environment amenable at present.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, good separating effect is provided, isolation technics easy and simple to handle, environment amenable can be used for being subjected to the improvement method of the carbonate matter seabeach sand grains that various crude oil (especially high pour point and viscous crude oil) pollute.
The carbonate matter seabeach sand grains (abbreviation oil-sand) that is subjected to oil spill described in the technical program comprises the sand grains that is subjected to the sand grains fresh or crude oil pollution of weathering and polluted by water-in-oil emulsification.
The objective of the invention is to realize by following technical measures:
A, preliminary treatment: will be subjected to carbonate matter seabeach sand grains, separation medicament and a small amount of seawater of oil spill to add the preliminary treatment jar, and adopt mechanical agitation and ultrasonic wave to handle appropriate time;
B, separation: will be through pretreated seawater, separate medicament and be subjected to the carbonate matter seabeach sand grains mixture of oil spill to be transferred to knockout drum; In knockout drum, add an amount of seawater, stir appropriate time with suitable rotating speed; Discharge clean sand self-separation jar bottom, and the mixture of isolated oil and water is sent into gun barrel and done further water-oil separating and get final product.
Detailed method is as follows:
In conjunction with Figure of description, with oil-sand 1, separate in medicament 2 and a small amount of seawater 3 adding preliminary treatment jars 4, preliminary treatment jar 4 places processor for ultrasonic wave 5.Mechanical stirring device 6 is arranged in preliminary treatment jar 4, with the seawater that adds, separating medicament and oil-sand, to carry out mechanical agitation suitably long-time, and utilize the ultrasonic wave of certain frequency to handle appropriate time.Be transferred in the knockout drum 7 through pretreated seawater, separation medicament and oil-sand mixture, in knockout drum, replenish an amount of seawater, stir appropriate time by mechanical stirring device 8 with certain rotating speed, the oil skimmer 9 at knockout drum top scrapes the mixture 10 of isolated oil and water, send into gun barrel 11, do further processed realize oil-moisture from; And clean sand 12 is discharged from the knockout drum bottom.The water 13 that gun barrel 11 is deviate from can recycle (deviate from water and recycle the treating capacity that can reduce waste water) with fresh seawater 3 merging.
Described separation medicament is by fatty amine (or alkyl quaternary ammonium salts), APES, and inhibitor and base agent are formed.Wherein: the alkyl carbon number of described fatty amine (or alkyl quaternary ammonium salts) is 8-18, and consumption is the 0.01-2% of oil-sand quality; The alkyl carbon number of described APES is 8-12, and the degree of polymerization is 3-20, and consumption is the 0.01-2% of oil-sand quality; Described inhibitor is selected from one or more in starch, dextrin, carboxymethyl cellulose, tannin extract and the waterglass, and the consumption of inhibitor is the 0.1-5% of oil-sand quality; Described base agent is selected from one or more in MEA, triethanolamine, NaOH, potassium hydroxide, sodium carbonate and the sodium acid carbonate, and the consumption of base agent is the 0.001-0.05% of oil-sand quality.
Preliminary treatment is carried out at ambient temperature, and the seawater that adds in the preliminary treatment jar is 0.5-2 a times of oil-sand quality; Mixing speed is 100-200rpm, and mixing time is 2-20min.The frequency that ultrasonic wave is handled is 20-50kHz, and ultrasonic treatment time is 5-100min.
The seawater that adds in knockout drum is 2-10 a times of oil-sand quality, and mixing speed is 100-200rpm, and mixing time is 5-30min, separates and carries out at ambient temperature.
The oil-sand that this method adopted is to be subjected to the above dry sand of high-water mark that greasy dirt dyes or the damp sand at seabeach.
Gao Ning of the present invention, highly viscous crude standard are: height refers to that with fixed attention condensation point is higher than 20 ℃; The high sticking viscosity that refers to is greater than 50mpa.s.
The present invention carries out at ambient temperature, certainly, can suitably heat (suitable heating was to prevent seawater icing when winter, environment temperature was very low as the north) according to polluting on-the-spot weather, but preferred scheme is to avoid heating, because need increase equipment and running cost; Can separate at ambient temperature is the advantage of present technique.
Beneficial effect of the present invention:
The present invention is directed to the carbonate matter seabeach sand grains (as shell sand etc.) that is subjected to oil spill, adopt seawater as separating medium, under ambient temperature conditions, (this medicament can anti-high salinity for separation medicament by adding certain proportioning, the ion of anti-the high contents of calcium and magnesium, and have good low temperature active), after mechanical agitation and ultrasonic pretreatment, can separate the carbonate matter beach sand grains that is subjected to oil spill effectively, separative efficiency can reach more than 90% and (see the disclosed effect of embodiment for details).
The greasy dirt that this technology is suitable for various character dyes, and comprises the pollution of light crude oil and Gao Ning, highly viscous crude etc.This method does not have specific (special) requirements to operationlocation, can directly operate near contaminated place, and can gather materials on the spot, and adopts the seawater that needs to administer the region, administers required cost of transportation thereby save greatly.Simultaneously, because separation process can be carried out at ambient temperature, reduced energy consumption effectively.The employed reagent cost of this method is lower, and environmentally friendly, can not cause secondary pollution.This method is simple, and is lower to equipment and operating condition requirement, and can reach very high separative efficiency.
Description of drawings
Fig. 1 is a separation process schematic diagram of the present invention.
Among the figure: 1 for being subjected to the carbonate matter beach sand grains of oil spill, is called for short oil-sand, and 2 for separating medicament, 3 is seawater, and 4 are the preliminary treatment jar, and 5 is processor for ultrasonic wave, 6 are mechanical stirring device in the preliminary treatment jar, 7 is knockout drum, and 8 is mechanical stirring device in the knockout drum, and 9 is oil skimmer, 10 are the oil told in the knockout drum and the mixture of water, 11 is gun barrel, and 12 is clean sand, and 13 deviate from water for water-oil separating.
The specific embodiment
The invention will be further elaborated by the following examples.
General explanation:
Operating procedure: as shown in Figure 1, with oil-sand 1, separate in medicament 2 and a small amount of seawater 3 adding preliminary treatment jars 4, preliminary treatment jar 4 places processor for ultrasonic wave 5.Mechanical stirring device 6 is arranged in preliminary treatment jar 4, with the seawater that adds, separating medicament and oil-sand, to carry out mechanical agitation suitably long-time, and utilize the ultrasonic wave of certain frequency to handle appropriate time.Be transferred in the knockout drum 7 through pretreated seawater, separation medicament and oil-sand mixture, in knockout drum, replenish an amount of seawater, stir appropriate time by mechanical stirring device 8 with certain rotating speed, the oil skimmer 9 at knockout drum top scrapes the mixture 10 of isolated oil and water, send into gun barrel 11, do further processed make oil with moisture from; And clean sand 12 is discharged from the knockout drum bottom.The water 13 that gun barrel 11 is deviate from can recycle with fresh seawater 3 merging.
Among the embodiment, the oil content of oil-sand refers to that the oil spilling quality accounts for the ratio of oil-sand quality.
Embodiment 1
Carry out according to the operating parameter in the operating procedure associative list 1 in the generality explanation, effect sees Table the separative efficiency in 1.
Table 1
| Condition | Embodiment 1 | |
| Oil spilling | Type | Light oil (＜200 ℃ of cut quality account for 57.5%) |
| The |
3 days | |
| Oil-sand | Water saturation | 90％ |
| Oil content | 14.3％ | |
| Separate medicament | C 12TAB | 0.5％ |
| NPE (3) | 0.01％ | |
| Inhibitor (carboxymethyl cellulose 40%, dextrin 60%) | 0.1％ | |
| Base agent (MEA 35%, NaOH 65%) | 0.001％ | |
| Preprocessing process | Temperature | Environment temperature: 25 ℃ |
| Add seawater amount (doubly) | 0.8 | |
| Mechanical agitation | 100rpm，5min | |
| Ultrasonic wave is handled | 20kHz，5min | |
| Separation process | Temperature | Environment temperature: 25 ℃ |
| Add seawater amount (doubly) | 3 | |
| Mechanical agitation | 100rpm，5min | |
| Separative efficiency | 99％ | |
(annotate: separate medicament and seawater addition and be all itself and the ratio of the oil-sand quality of handling; The ratio of each component all refers to the mass percent of each ingredients constitute inhibitor or base agent gross mass in inhibitor and the base agent.)
Carry out according to the operating parameter in the operating procedure associative list 2 in the generality explanation, effect sees Table the separative efficiency in 2.
Table 2
| | Embodiment | 2 | |
| Oil spilling | Type | Crude oil with high solidifying point (32 ℃ of condensation points) | |
| The weathering time | 15 days | ||
| Oil-sand | Water saturation | 20％ | |
| Oil content | 9.6％ | ||
| Separate medicament | C 16TAB | 0.01％ | |
| Isooctylphenol APEO (10) | 0.5％ | ||
| Inhibitor (starch 80%, waterglass 20%) | 0.8％ | ||
| Base agent ( |
0.005％ | ||
| Preprocessing process | Temperature | Environment temperature: 10 ℃ | |
| Add seawater amount (doubly) | 0.6 | ||
| Mechanical agitation | 150rpm，10min | ||
| Ultrasonic wave is handled | 40kHz，10min | ||
| Separation process | Temperature | Environment temperature: 10 ℃ | |
| Add seawater amount (doubly) | 5 | ||
| Mechanical agitation | 200rpm，15min | ||
| Separative efficiency | 95％ | ||
(annotate: separate medicament and seawater addition and be all itself and the ratio of the oil-sand quality of handling; The ratio of each component all refers to the mass percent of each ingredients constitute inhibitor or base agent gross mass in inhibitor and the base agent.)
Carry out according to the operating parameter in the operating procedure associative list 3 in the generality explanation, effect sees Table the separative efficiency in 3.
Table 3
| | Embodiment | 3 | |
| Oil spilling | Type | Highly viscous crude (4000mpa.s, 25 ℃) | |
| The weathering time | 9 days | ||
| Oil-sand | Water saturation | ＜1% (dry sand) | |
| Oil content | 8.1％ | ||
| Separate medicament | R-N(CH 3) 3Cl(R：C 8-C 18) | 0.8％ | |
| Dodecyl phenol polyethenoxy ether (10) | 1％ | ||
| Inhibitor (tannin extract 20%, waterglass 30%, dextrin 50%) | 1.5％ | ||
| Base agent (sodium carbonate 60%, sodium acid carbonate 40%) | 0.01％ | ||
| The preprocessing process parameter | Temperature | Environment temperature: 5 ℃ | |
| Add seawater amount (doubly) | 2 | ||
| Mechanical agitation | 100rpm，20min | ||
| Ultrasonic wave is handled | 40kHz，50min | ||
| Separation number process ginseng | Temperature | Environment temperature: 5 ℃ | |
| Add seawater amount (doubly) | 10 | ||
| Mechanical agitation | 100rpm，20min | ||
| Separative efficiency | 92％ | ||
(annotate: separate medicament and seawater addition and be all itself and the ratio of the oil-sand quality of handling; The ratio of each component all refers to the mass percent of each ingredients constitute inhibitor or base agent gross mass in inhibitor and the base agent.)
Claims (8)
1. improvement method that is subjected to the carbonate matter seabeach sand grains of oil spill is characterized in that adopting following steps:
A, preliminary treatment: will be subjected to carbonate matter seabeach sand grains, separation medicament and a small amount of seawater of oil spill to add the preliminary treatment jar, and adopt mechanical agitation and ultrasonic wave to handle appropriate time;
B, separation: will be through pretreated seawater, separate medicament and be subjected to the carbonate matter seabeach sand grains mixture of oil spill to be transferred to knockout drum; In knockout drum, add an amount of seawater, stir appropriate time with suitable rotating speed; Discharge clean sand self-separation jar bottom, and the mixed platform thing of isolated oil and water is sent into gun barrel and done further water-oil separating and get final product;
Described separation medicament is by fatty amine or alkyl quaternary ammonium salts, APES, and inhibitor and base agent are formed; Wherein inhibitor is selected from one or more in starch, dextrin, carboxymethyl cellulose, tannin extract and the waterglass, and base agent is selected from one or more in MEA, triethanolamine, NaOH, potassium hydroxide, sodium carbonate and the sodium acid carbonate.
2. require described improvement method according to right 1, the consumption that it is characterized in that fatty amine or alkyl quaternary ammonium salts is the 0.01-2% that is subjected to the carbonate matter seabeach sand quality of oil spill, the consumption of APES is the 0.01-2% that is subjected to the carbonate matter seabeach sand quality of oil spill, the consumption of inhibitor is the 0.1-5% that is subjected to the carbonate matter seabeach sand quality of oil spill, and the consumption of base agent is the 0.001-0.05% that is subjected to the carbonate matter seabeach sand quality of oil spill.
3. improvement method according to claim 2 is characterized in that the alkyl carbon number of fatty amine in the described separation medicament or alkyl quaternary ammonium salts is 8-18.
4. improvement method according to claim 2, the alkyl carbon number that it is characterized in that APES in the described separation medicament is 8-12, the degree of polymerization is 3-20.
5. improvement method according to claim 1 is characterized in that this method carries out at ambient temperature.
6. improvement method according to claim 1 is characterized in that the frequency that ultrasonic wave is handled in the preliminary treatment is 20-50kHz, and the processing time is 5-100min.
7. improvement method according to claim 1, it is characterized in that the seawater that adds in the pre-treatment step be subjected to oil spill carbonate matter seabeach sand quality 0.5-2 doubly, mixing speed is 100-200rpm, mixing time is 2-20min; The seawater that in separating step, adds be subjected to oil spill carbonate matter seabeach sand quality 2-10 doubly, mixing speed is 100-200rpm, mixing time is 5-30min.
8. improvement method according to claim 1, it is characterized in that being subjected to the carbonate matter seabeach sand grains of oil spill to comprise the sand grains that is subjected to the sand grains fresh or crude oil pollution of weathering, polluted by water-in-oil emulsification, these sand grains are the above dry sand of the high-water mark that dyed by greasy dirt or the damp sand at seabeach.
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| CNB2005100226259A CN100371083C (en) | 2005-12-26 | 2005-12-26 | Method for treating carbonate sands polluted by overflowed oil at coastal beach |
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| CNB2005100226259A CN100371083C (en) | 2005-12-26 | 2005-12-26 | Method for treating carbonate sands polluted by overflowed oil at coastal beach |
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| CN105885910B (en) * | 2016-05-09 | 2018-04-13 | 天津大学 | A kind of efficient separation method rich in carbonate heavy oil field |
| CN113333170B (en) * | 2021-05-13 | 2022-05-03 | 西北矿冶研究院 | Method for improving main grade of zinc concentrate after copper-zinc separation |
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|---|---|---|---|---|
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-
2005
- 2005-12-26 CN CNB2005100226259A patent/CN100371083C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2049871C1 (en) * | 1992-04-24 | 1995-12-10 | Научно-внедренческое предприятие "Эгтех" | Method for sand cleaning from oil and oil products |
| JPH11179229A (en) * | 1997-12-22 | 1999-07-06 | Shimizu Corp | Method of washing treatment of oil-contaminated sand and device therefor |
| DE19930515A1 (en) * | 1999-07-05 | 2001-02-08 | Horst Chmiel | Separating oil-containing materials from pourable material, e.g. sand especially on coasts and beaches, comprises separating oil-containing materials from pourable material using a hydrophobic cloth or fleece |
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