CN101139030A - Method for controlling evaporating loss of light fuel oil in oil tank - Google Patents
Method for controlling evaporating loss of light fuel oil in oil tank Download PDFInfo
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- CN101139030A CN101139030A CNA200710132598XA CN200710132598A CN101139030A CN 101139030 A CN101139030 A CN 101139030A CN A200710132598X A CNA200710132598X A CN A200710132598XA CN 200710132598 A CN200710132598 A CN 200710132598A CN 101139030 A CN101139030 A CN 101139030A
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- fuel oil
- light fuel
- oil tank
- evaporation loss
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Abstract
The present invention discloses a method to control evaporation loss of light fuel oil in oil tank. The main technical proposal is that a fluoride-treated oil resistance plastic product is filled with phase change material; at last, treated plastic product can be put into an oil storage tank, evaporation loss of light fuel oil can be further inhibited as phase change endothermic of phase change material can reduce temperature on the evaporation surface of oil product. The positive effect of the present invention means that evaporation loss of light fuel oil can be greatly reduced. The present invention is suitable for the oil tank of various shapes; the oil tank needs no modification and processing, with convenient and reliable applying processing; the coating surface of light fuel oil has corrosion resistance, oxidation resistance and long service life; recycling is convenient and do not affect normal repairing and maintenance of the oil tank.
Description
Technical field
The present invention relates to a kind of technology of controlling evaporating loss of light fuel oil, specifically a kind of method by the phase transformation cooling is controlled the method for evaporation loss of light fuel oil in oil tank.The evaporation loss that is applicable to light-weight fuel oil in the storage oil tank of different shape suppresses.
Background technology
Oil and products thereof occupies important status as the irreproducibility energy in economic construction and national defense construction.The evaporation loss of oil product accounts for 76% of storing and transporting system overall loss, not only causes economic waste, and influences the quality of oil product and cause environmental pollution.For reducing the loss of oil product in storage process, the patent documentation of the application number of having announced 200610040981.8 discloses a kind of soft floater technology of controlling evaporating loss of light fuel oil, this technology is the oil resistant hollow plastic articles of different size and shape to be carried out surface fluorination handle, and then the plastic product after will handling renders to and stores in the oil tank, reduces the evaporation loss that the free evaporation surface of oil product suppresses light-weight fuel oil above the oil product by floating the covering of hollow plastic articles.Though this technology can significantly reduce the evaporation loss of oil product, and is perfect not enough.Given this, the present invention has carried out improving to the soft floater technology of control evaporating loss of light fuel oil.
Summary of the invention
The purpose of this invention is to provide a kind of method of controlling evaporation loss of light fuel oil in oil tank, by the method control evaporation loss of light fuel oil in oil tank of phase transformation cooling, to obtain the effect that reduces oil product evaporating loss to greatest extent.
Technical scheme of the present invention is as follows: a kind of method of controlling evaporation loss of light fuel oil in oil tank, be to carry out fluorination treatment with the oil resistant hollow plastic articles that oil resistant plastics is made, combine firmly with plastic substrate in the formation of hollow plastic articles surface, the fluorinated layer of surface compact, in the cavity of hollow oil resistant plastics goods, also be perfused with phase-change material, the plastic product that will be perfused with phase-change material is then rendered in the storage oil tank, covers the free evaporation surface of minimizing oil product above the oil product and reduces the evaporation loss that the oil evaporation surface temperature suppresses light-weight fuel oil by the heat absorption of phase transformation material phase transformation by hollow plastic articles is floating.
The described floating quantity of the lip-deep plastic product of oil product that covers is can be paved with pasta one deck at least.
Described phase-change material is meant any one in four water potassium fluorides, Copper nitrate hexahydrate, six water ferric bromides, washing soda, two water lithium bromides, dimethyl sulfoxide (DMSO), butyl stearate, paraffin, dimethyl sebacate, carbowax E600, ethene stearic acid and the capric acid.Its concrete hot rerum natura can be as shown in table 1:
The hot rerum natura of table 1 phase-change material
| Phase-change material | Fusing point (℃) | Heat of fusion (kJ/kg) | Density (kg/m 3) |
| Four water potassium fluorides | 18.5 | 231 | 1447 |
| Copper nitrate hexahydrate | 26.4 | 154 | 2074 |
| Six water ferric bromides | 27 | 105 | |
| Washing soda | 32 | 267 | 1442 |
| Two water lithium bromides | 34 | 124 | |
| Dimethyl sulfoxide (DMSO) | 16.5 | 85.7 | 1009 (solid-state or liquid) |
| Butyl stearate | .19 | 140，123-200 | |
| Paraffin | 28，27.5 | 244，243.5 | 774(70℃)，814(20℃) |
| Dimethyl sebacate | 21 | 120-135 | |
| Carbowax E600 | 22 | 127.2 | 1126(25℃)，1232(4℃) |
| The ethene stearic acid | 27-29 | 122 | |
| Capric acid | 36 | 148 |
The amount of described phase-change material perfusion is advisable with the 1/4-3/4 of filled plastics product volume.
Described oil resistant plastics is meant polyethylene (PE), polyvinylchloride (PVC), polyvinyl alcohol (PVA), polypropylene (PP), polystyrene (PS), polyphenylene oxide (PPO), polyphenylene sulfide (PPS) and polyamide (PA), and its specific performance requires as follows:
| The plastics title | Weight average molecular weight (ten thousand) | Density (Gcm -3) | Water absorption rate (%) | Resistance to heat (℃) | Specific inductance capacity (60Hz) |
| Polyethylene and polyvinyl chloride polyvinyl alcohol polypropylene polystyrene polyphenylene oxide polyphenylene sulfide polyamide | 4.8～35 3～25 7～22 6～25 5～20 2～5 7～16 1.5～8 | 0.94～0.965 1.35～1.45 1.26～1.35 0.90～0.915 1.05～1.09 1.06 1.15～1.26 1.00～1.15 | ＜0.01 0.15～0.75 1 0.03～0.04 0.03～0.05 0.07 0.009 1～2.5 | 108 70 100 120 75 190 101 140 | 2.35 5.0～9.0 1.5～1.8 2.1 2.45～2.65 2.85 3.26 3.5～4.4. |
Described fluorination treatment material comprises fluorine gas, and the cation of solid or liquid is fluoridized thing, anion fluoride or both sexes fluoride, and fluorine coating, fluorocarbon resin.The thickness of fluorinated layer is 5～20 μ m.
Described hollow plastic articles is that length is that 5mm～20mm, wall thickness are hollow square or the cuboid of 0.5mm～2mm; Or diameter is that Φ 5mm～Φ 20mm, wall thickness are the hollow ball of 0.5mm～2mm.
Beneficial effect of the present invention is: the present invention controls the soft floater technology of evaporating loss of light fuel oil when suppressing the evaporation loss of light-weight fuel oil by the free evaporation surface of minimizing oil product, reduce the temperature on oil evaporation surface by adding phase-change material, thereby significantly reduce the evaporation loss of light-weight fuel oil.The present invention is applicable to the oil tank of different shape; Need not oil tank is transformed and handled, implementing process is convenient and reliable; Light Fuel oil overlay withstanding corrosion, antioxidant, tenure of use is long; It is convenient to reclaim, and does not influence the normal maintenance and the maintenance of oil tank.
The specific embodiment
The present invention is described in more detail below in conjunction with embodiment.
Embodiment 1:
Under 125 ℃～135 ℃, be 10～120,000 with weight average molecular weight, density is 0.94～0.965Kg/m
3High density polyethylene (HDPE) is made the hollow plastic beads of Φ 15mm * 1.5mm.Be that 15～180,000 perfluoro alkoxy benzoic acid utilizes vacuum evaporation gas phase lamination method to handle hollow plastic beads surface then with weight average molecular weight, form the perfluoro alkoxy benzoic acid molecule film of fine and close flawless 5～10 μ m of one deck on the bead surface.The inner perfusion of hollow plastic beads phase-change material ethene stearic acid (fusing point is that 27 ℃, heat of fusion are 122kJ/kg), the amount of perfusion is 1/2 of a plastic beads volume at last.Bead after handling is thrown in into oil tank by certain thickness, covered the evaporation loss that the light-weight fuel oil surface can suppress oil product, compare with the holding vessel of not implementing soft floater technology, this technology can make the evaporation loss of light-weight fuel oil reduce by 80%.
Implement the phase transformation cool-down method and compare, can make the evaporation loss of light-weight fuel oil reduce by 20% again with the soft floater technology of not implementing cool-down method.
Embodiment 2:
Under 150 ℃～160 ℃, be 5～200,000 with weight average molecular weight, density is 1.35～1.45Kg/m
3Polyvinylchloride (PVC) to make the length of side be 20mm, thickness is the square hollow plastic product of 0.5mm.Be 38 with relative molecular weight then, density is 1.696Kg/m
3, purity is higher than 99% high-purity fluorine gas and slowly feeds and fluoridize stove hollow plastic articles is carried out fluorination treatment, and the reaction time was controlled at 48～72 hours, and feeding the fluorine gas amount is 15～25Kg/m by handling frosting long-pending
2The amount of being equipped with is finally at the surperficial fluorine-containing molecular film that forms fine and close flawless 5～20 μ m of one deck of hollow plastic articles.(fusing point is that 28 ℃, heat of fusion are that 244kJ/kg, density are 814kg/m at the inner perfusion of hollow plastic beads phase-change material paraffin then
3), the amount of perfusion is 1/2 of a plastic beads volume.Hollow plastic articles after the fluorination treatment is thrown in into oil tank by certain thickness, covered the evaporation loss that the light-weight fuel oil surface can suppress oil product, compare with the holding vessel of not implementing soft floater technology, the light-weight fuel oil evaporation loss can reduce by 82%.
Implement the phase transformation cool-down method and compare, can make the evaporation loss of light-weight fuel oil reduce by 20% again with the soft floater technology of not implementing cool-down method.
Claims (3)
1. method of controlling evaporation loss of light fuel oil in oil tank, it is characterized in that and to carry out fluorination treatment with the oil resistant hollow plastic articles that oil resistant plastics is made, combine firmly with plastic substrate in the formation of hollow plastic articles surface, the fluorinated layer of surface compact, in the cavity of hollow oil resistant plastics goods, also be perfused with phase-change material, the plastic product that will be perfused with phase-change material is then rendered in the storage oil tank, covers the free evaporation surface of minimizing oil product above the oil product and reduces the evaporation loss that the oil evaporation surface temperature suppresses light-weight fuel oil by the heat absorption of phase transformation material phase transformation by hollow plastic articles is floating.
2. the method for control evaporation loss of light fuel oil in oil tank according to claim 1, it is characterized in that described phase-change material is that fusing point is any one in 10 ℃-40 ℃ material four water potassium fluorides, Copper nitrate hexahydrate, six water ferric bromides, washing soda, two water lithium bromides, dimethyl sulfoxide (DMSO), butyl stearate, paraffin, dimethyl sebacate, carbowax E600, ethene stearic acid and the capric acid.
3. the method for control evaporation loss of light fuel oil in oil tank according to claim 1 is characterized in that, the amount of described phase-change material perfusion is the 1/4-3/4 of hollow plastic articles cavity volume.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200710132598XA CN101139030A (en) | 2007-09-20 | 2007-09-20 | Method for controlling evaporating loss of light fuel oil in oil tank |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200710132598XA CN101139030A (en) | 2007-09-20 | 2007-09-20 | Method for controlling evaporating loss of light fuel oil in oil tank |
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| CN101139030A true CN101139030A (en) | 2008-03-12 |
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| CNA200710132598XA Pending CN101139030A (en) | 2007-09-20 | 2007-09-20 | Method for controlling evaporating loss of light fuel oil in oil tank |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287214A (en) * | 2011-06-29 | 2011-12-21 | 李光武 | Phase-change cooling device for rescue capsule and refuge chamber |
| CN102305467A (en) * | 2011-09-16 | 2012-01-04 | 广东纽恩泰新能源科技发展有限公司 | Heat-storage heat pump water heater device |
| CN103612833A (en) * | 2013-12-06 | 2014-03-05 | 上海应用技术学院 | Device containing phase change materials and used for heat insulation of solution in open system |
| CN106586300A (en) * | 2016-07-19 | 2017-04-26 | 北京众信远新能源技术有限公司 | Soft floating roof method for reducing evaporation of liquid fuel storage tank through hollow plastic product |
-
2007
- 2007-09-20 CN CNA200710132598XA patent/CN101139030A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287214A (en) * | 2011-06-29 | 2011-12-21 | 李光武 | Phase-change cooling device for rescue capsule and refuge chamber |
| CN102305467A (en) * | 2011-09-16 | 2012-01-04 | 广东纽恩泰新能源科技发展有限公司 | Heat-storage heat pump water heater device |
| CN103612833A (en) * | 2013-12-06 | 2014-03-05 | 上海应用技术学院 | Device containing phase change materials and used for heat insulation of solution in open system |
| CN106586300A (en) * | 2016-07-19 | 2017-04-26 | 北京众信远新能源技术有限公司 | Soft floating roof method for reducing evaporation of liquid fuel storage tank through hollow plastic product |
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