JP2005089503A - Method for producing low-sulfur gas oil - Google Patents
Method for producing low-sulfur gas oil Download PDFInfo
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- JP2005089503A JP2005089503A JP2003321089A JP2003321089A JP2005089503A JP 2005089503 A JP2005089503 A JP 2005089503A JP 2003321089 A JP2003321089 A JP 2003321089A JP 2003321089 A JP2003321089 A JP 2003321089A JP 2005089503 A JP2005089503 A JP 2005089503A
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- light oil
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- gas oil
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- 229910052717 sulfur Inorganic materials 0.000 title claims abstract description 36
- 239000011593 sulfur Substances 0.000 title claims abstract description 36
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 claims abstract description 54
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 31
- 238000002156 mixing Methods 0.000 claims abstract description 7
- 238000009835 boiling Methods 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 30
- 239000002283 diesel fuel Substances 0.000 claims description 3
- 229920001971 elastomer Polymers 0.000 abstract description 19
- 239000005060 rubber Substances 0.000 abstract description 19
- 125000003118 aryl group Chemical group 0.000 abstract description 13
- 238000000034 method Methods 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 65
- 235000019198 oils Nutrition 0.000 description 65
- 239000007789 gas Substances 0.000 description 16
- 238000004821 distillation Methods 0.000 description 13
- 239000003054 catalyst Substances 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 8
- 230000002522 swelling effect Effects 0.000 description 8
- 239000010779 crude oil Substances 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 239000000295 fuel oil Substances 0.000 description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 239000003350 kerosene Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 230000003197 catalytic effect Effects 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 229920003051 synthetic elastomer Polymers 0.000 description 3
- 239000005061 synthetic rubber Substances 0.000 description 3
- 230000000740 bleeding effect Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000006477 desulfuration reaction Methods 0.000 description 2
- 230000023556 desulfurization Effects 0.000 description 2
- 235000014113 dietary fatty acids Nutrition 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 229930195729 fatty acid Natural products 0.000 description 2
- 239000000194 fatty acid Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000005504 petroleum refining Methods 0.000 description 2
- 238000000197 pyrolysis Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 206010018291 Gingival swelling Diseases 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- MEGHWIAOTJPCHQ-UHFFFAOYSA-N ethenyl butanoate Chemical compound CCCC(=O)OC=C MEGHWIAOTJPCHQ-UHFFFAOYSA-N 0.000 description 1
- UIWXSTHGICQLQT-UHFFFAOYSA-N ethenyl propanoate Chemical compound CCC(=O)OC=C UIWXSTHGICQLQT-UHFFFAOYSA-N 0.000 description 1
- 229920001038 ethylene copolymer Polymers 0.000 description 1
- -1 fatty acid ester Chemical class 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000002816 fuel additive Substances 0.000 description 1
- 239000010763 heavy fuel oil Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 238000006317 isomerization reaction Methods 0.000 description 1
- 239000006078 metal deactivator Substances 0.000 description 1
- 150000004702 methyl esters Chemical class 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 150000004671 saturated fatty acids Chemical class 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000005292 vacuum distillation Methods 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
- 229920001567 vinyl ester resin Polymers 0.000 description 1
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- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
Description
本発明は、原油を原料とし石油精製により製造される軽油の製造方法に関し、特には最近のディーゼル自動車に対する環境適応性に配慮した硫黄分１０ｐｐｍ以下の低硫黄軽油の製造方法に関する。 The present invention relates to a method for producing light oil produced from crude oil as a raw material by petroleum refining, and more particularly to a method for producing low sulfur light oil having a sulfur content of 10 ppm or less in consideration of environmental adaptability to recent diesel vehicles.
昨今の環境問題から、ディーゼル自動車排気ガス中のＮＯｘ、パティキュレート対策のために、軽油中の硫黄分のさらなる低減化が盛んに検討されている。
硫黄分１０ｐｐｍ以下の超低硫黄軽油を得るためには、一般的に、軽油留分を高温高圧下で触媒と接触させる水素化脱硫法が用いられている。この脱硫工程では、脱硫に付随して芳香族分、特に多環芳香族分が核水添され、結果的に硫黄分と同時に芳香族分も減少する。しかし、ディーゼル自動車の燃料系配管などに用いられる合成ゴムなどのパッキンは、燃料である軽油による適度な膨潤を見込んで設計されている。このため、膨潤性が低下すると、締め付け力が低下して、これによる燃料油漏れ（にじみ）などが憂慮される。
Due to recent environmental problems, further reduction of the sulfur content in light oil is being actively studied for measures against NOx and particulates in diesel automobile exhaust gas.
In order to obtain an ultra-low sulfur gas oil having a sulfur content of 10 ppm or less, a hydrodesulfurization method is generally used in which a gas oil fraction is brought into contact with a catalyst under high temperature and pressure. In this desulfurization step, aromatic components, particularly polycyclic aromatic components, are nuclear hydrogenated accompanying desulfurization, and as a result, the aromatic components are reduced simultaneously with the sulfur component. However, a packing made of synthetic rubber or the like used for a fuel system pipe of a diesel vehicle is designed with an appropriate swelling due to light oil as a fuel. For this reason, if swelling property falls, fastening force will fall and there will be concern about fuel oil leakage (bleeding) by this.
なお、工業用燃料油であるＡ重油において、アニリン点を４０℃以上とすることにより、ゴム膨潤性を少なくできることが知られている（例えば、特許文献１参照）が、この燃料はディーゼル自動車に用いられるものではない。
ディーゼル自動車の燃料系配管などに用いられる合成ゴム（ＮＢＲ、Ｈ−ＮＢＲなど）の膨潤性については、従来、軽油に含まれる芳香族分量と相関すると考えられていた。しかし、本発明者らが超低硫黄軽油を検討したところ、芳香族分の減少に伴ってゴム膨潤性が低下する傾向が見られたが、ほぼ同じ芳香族分においてもゴム膨潤性に大きく差があることが明らかになった。このため、ほぼ同じ芳香族分であってもゴム膨潤性が大きくばらつくこととなり、適度なゴム膨潤性を有する硫黄分１０ｐｐｍ以下の超低硫黄軽油を安定に製造する製造方法が必要となる。 Conventionally, the swelling property of synthetic rubber (NBR, H-NBR, etc.) used for fuel system piping of diesel vehicles has been considered to correlate with the aromatic content contained in light oil. However, when the present inventors examined ultra-low sulfur gas oil, there was a tendency that the rubber swellability decreased as the aromatic content decreased, but there was a large difference in rubber swellability even with almost the same aromatic content. It became clear that there is. For this reason, even if it is substantially the same aromatic content, rubber swellability varies greatly, and a production method for stably producing an ultra-low sulfur gas oil having an appropriate rubber swellability and a sulfur content of 10 ppm or less is required.
そこで、本発明は、適度なゴム膨潤性を有する硫黄分１０ｐｐｍ以下の超低硫黄軽油を安定に製造する製造方法を提供することを課題とする。 Then, this invention makes it a subject to provide the manufacturing method which manufactures the ultra-low-sulfur light oil which has moderate rubber swelling property and whose sulfur content is 10 ppm or less stably.
本発明者らは、軽油の性状と、該軽油に浸せきさせた時のゴム物理特性との相関を鋭意研究した結果、特定の性状、特にアニリン点が合成ゴムの膨潤性と相関関係を有することを見出し、本発明を完成するに至った。 As a result of intensive studies on the correlation between the properties of light oil and the physical properties of rubber when immersed in the light oil, the inventors have found that specific properties, particularly aniline points, have a correlation with the swelling property of synthetic rubber. As a result, the present invention has been completed.
すなわち、本発明による硫黄分１０ｐｐｍ以下の低硫黄軽油の製造方法は、軽油第１基材のアニリン点を測定して、そのアニリン点が７７.０℃以上の場合には、アニリン点が５０.０〜７６.０℃である軽油第２基材を、製造される軽油のアニリン点が６０.０〜７６.０℃となるような配合比で前記軽油第１基材と軽油第２基材を配合するものである。製造される軽油の初留点が１５０〜２０２℃であり、芳香族分が１０〜２７容量％、動粘度が１.８〜５.５ｍｍ２／ｓであることが好ましい。 That is, the method for producing a low sulfur gas oil having a sulfur content of 10 ppm or less according to the present invention measures the aniline point of the first base material of light oil, and when the aniline point is 77.0 ° C. or higher, the aniline point is 50. The light oil second base material and the light oil second base material are mixed at a blending ratio such that the aniline point of the light oil produced is 60.0-76.0 ° C. Is blended. It is preferable that the initial boiling point of the produced light oil is 150 to 202 ° C., the aromatic content is 10 to 27% by volume, and the kinematic viscosity is 1.8 to 5.5 mm 2 / s.
低硫黄軽油基材において、ゴム膨潤性はアニリン点と高い負の相関を持つため、高いアニリン点の軽油第１基材に対して、所定のアニリン点を持つ軽油が得られるように所定の軽油第２基材を配合する、簡単な操作により、ゴム膨潤性の良好な硫黄分１０ｐｐｍ以下の低硫黄軽油の安定に製造することが可能となる。 In the low sulfur gas oil base material, the rubber swelling property has a high negative correlation with the aniline point, so that the light oil having a predetermined aniline point is obtained with respect to the light oil first base material having a high aniline point. By a simple operation of blending the second base material, it becomes possible to stably produce a low-sulfur gas oil having a sulfur content of 10 ppm or less with good rubber swellability.
〔軽油第１基材〕
本発明に用いる軽油第１基材の好ましいアニリン点は、７７.０〜８０.０℃である。また、好ましい密度は０.８２〜０.８５ｇ／ｃｍ３、好ましい３０℃における動粘度は３.５〜６.０ｍｍ２／ｓ、好ましい硫黄分は２０ｐｐｍ、特には１０ｐｐｍ以下、好ましい芳香族分は２７容量％以下、特には１０〜２５容量％である。好ましい蒸留性状は、初留点が１７０〜２３０℃、５０％留出温度が２７０〜３２０℃、９５％が３３０〜３６５℃である。
[Light oil first base material]
The preferable aniline point of the light oil first base material used in the present invention is 77.0 to 80.0 ° C. The preferred density is 0.82 to 0.85 g / cm 3 , the kinematic viscosity at 30 ° C. is preferably 3.5 to 6.0 mm 2 / s, the preferred sulfur content is 20 ppm, particularly 10 ppm or less, and the preferred aromatic content is 27% by volume or less, particularly 10 to 25% by volume. Preferred distillation properties are an initial boiling point of 170 to 230 ° C, a 50% distillation temperature of 270 to 320 ° C, and 95% of 330 to 365 ° C.
〔軽油第２基材〕
本発明に用いる軽油第２基材のアニリン点は５０.０〜７６.０℃、好ましくは６０.０〜７５.０℃であり、好ましい密度は０.７８〜０.８４ｇ／ｃｍ３、好ましい３０℃における動粘度は１.０〜４.０ｍｍ２／ｓ、好ましい硫黄分は１５ｐｐｍ以下、特には８ｐｐｍ以下、好ましい芳香族分は２７容量％以下、特には１０〜２５容量％である。好ましい蒸留性状は、初留点が１５０〜２００℃、５０％留出温度が１９０〜３００℃、９５％が２４０〜３７０℃である。通常、灯油留分の範疇に含まれるような留分でも、上記物性の範囲内のものであれば、本発明に用いる軽油第２基材として用いることができる。
[Light oil second base material]
The light oil second base material used in the present invention has an aniline point of 50.0 to 76.0 ° C, preferably 60.0 to 75.0 ° C, and a preferable density of 0.78 to 0.84 g / cm 3 , preferably. The kinematic viscosity at 30 ° C. is 1.0 to 4.0 mm 2 / s, the preferable sulfur content is 15 ppm or less, particularly 8 ppm or less, and the preferable aromatic content is 27 volume% or less, particularly 10 to 25 volume%. Preferred distillation properties are an initial boiling point of 150 to 200 ° C, a 50% distillation temperature of 190 to 300 ° C, and 95% of 240 to 370 ° C. Usually, even a fraction contained in the category of kerosene fraction can be used as the second base material for light oil used in the present invention as long as it falls within the above-mentioned physical properties.
軽油第１基材、軽油第２基材として用いられる基材は、原油の常圧蒸留装置から得られる直留軽油、減圧蒸留装置から得られる減圧軽油の他、これらに原油の常圧蒸留装置から得られる直留灯油、接触分解装置から得られる接触分解軽油、重油間接脱硫装置から得られる間脱軽油、重油直接脱硫装置から得られる直脱軽油など、またこれらの基材をさらに水素化脱硫、異性化、脱ろうなどの精製処理した基材が挙げられる。軽油第１基材または、軽油第２基材として、石油精製工程から得られた複数の基材を混合してもちいることもできる。さらに、基材として、天然ガス、石炭などを原料としてFischer-Tropsch法により合成された炭化水素に由来する基材を用いることもできる。 The base materials used as the first base material for light oil and the second base material for light oil include straight-run gas oil obtained from a crude oil pressure distillation apparatus, vacuum gas oil obtained from a vacuum distillation apparatus, and crude oil atmospheric distillation apparatus. Straight-run kerosene obtained from a catalytic cracker, catalytic cracked light oil obtained from a catalytic cracker, degasified oil obtained from a heavy oil indirect desulfurizer, direct degasified diesel oil obtained from a heavy oil direct desulfurizer, etc. , Isomerization, dewaxing and the like. As the light oil first base material or the light oil second base material, a plurality of base materials obtained from the petroleum refining process may be mixed. Furthermore, as a base material, a base material derived from a hydrocarbon synthesized by Fischer-Tropsch method using natural gas, coal or the like as a raw material can be used.
〔低硫黄軽油〕
本発明により製造される低硫黄軽油のアニリン点は６０.０〜７６.０℃、好ましくは６３.０〜７５.０℃であり、好ましい密度は０.７８〜０.８４ｇ／ｃｍ３、好ましい３０℃における動粘度は１.８〜５.５ｍｍ２／ｓ、特には２.５〜５.０ｍｍ２／ｓ、硫黄分は１０ｐｐｍ以下、好ましくは８ｐｐｍ以下、好ましい芳香族分は２７容量％以下、特には１０〜２７容量％である。好ましい蒸留性状は、初留点が１５０〜２００℃、５０％留出温度が２１０〜３２０℃、９５％が２４０〜３７０℃である。
高いアニリン点の軽油第１基材は、極めてゴム膨潤性が低く、燃料油漏れ（にじみ）などが懸念されるが、上記のような軽油第２基材と配合して、上記物性の低硫黄軽油を調製することにより、優れたゴム膨潤性を得ることができる。すなわち、ゴム膨潤性における体積変化率が５〜１５容量％、特には６〜１２容量％である低硫黄軽油を調製することができる。
軽油第１基材と軽油第２基材の配合割合は、それぞれの基材を予備的に配合して、そのアニリン点などを測定することにより決めることができる。
[Low sulfur gas oil]
The aniline point of the low sulfur gas oil produced according to the present invention is 60.0-76.0 ° C, preferably 63.0-75.0 ° C, and the preferred density is 0.78-0.84 g / cm 3 , preferred. The kinematic viscosity at 30 ° C. is 1.8 to 5.5 mm 2 / s, particularly 2.5 to 5.0 mm 2 / s, the sulfur content is 10 ppm or less, preferably 8 ppm or less, and the preferred aromatic content is 27 volume% or less. In particular, it is 10 to 27% by volume. Preferred distillation properties are an initial boiling point of 150 to 200 ° C, a 50% distillation temperature of 210 to 320 ° C, and 95% of 240 to 370 ° C.
The light aniline first base material with a high aniline point has a very low rubber swellability, and there is a concern about fuel oil leakage (bleeding). By preparing light oil, excellent rubber swellability can be obtained. That is, a low sulfur gas oil having a volume change rate in rubber swellability of 5 to 15% by volume, particularly 6 to 12% by volume can be prepared.
The blending ratio of the light oil first base material and the light oil second base material can be determined by preliminarily blending each base material and measuring its aniline point and the like.
本発明の低硫黄軽油を調製するために、他の軽油基材として、さらに植物油メチルエステルなども用いることができる。また、軽油への添加剤としては、低温流動性向上剤、耐摩耗性向上剤、セタン価向上剤、酸化防止剤、金属不活性剤、腐食防止剤等の公知の燃料添加剤を添加してもよい。低温流動性向上剤としては、エチレン共重合体などを用いることができるが、特には、酢酸ビニル、プロピオン酸ビニル、酪酸ビニルなどの飽和脂肪酸のビニルエステルが好ましく用いられる。耐摩耗性向上剤としては、長鎖（例えば、炭素数１２〜２４）脂肪酸または脂肪酸エステルが好ましく用いられる。１０〜５００ｐｐｍ、好ましくは５０〜１５０ｐｐｍの添加量で十分に耐摩耗性が向上する。 In order to prepare the low sulfur gas oil of the present invention, vegetable oil methyl ester or the like can be further used as another gas oil base. Additives to diesel oil include known fuel additives such as low-temperature fluidity improvers, wear resistance improvers, cetane improvers, antioxidants, metal deactivators, and corrosion inhibitors. Also good. As the low temperature fluidity improver, an ethylene copolymer or the like can be used. In particular, a vinyl ester of a saturated fatty acid such as vinyl acetate, vinyl propionate or vinyl butyrate is preferably used. As the wear resistance improver, a long chain (for example, having 12 to 24 carbon atoms) fatty acid or fatty acid ester is preferably used. The wear resistance is sufficiently improved by the addition amount of 10 to 500 ppm, preferably 50 to 150 ppm.
以下に本発明を実施例及び比較例により具体的に説明するが、本発明はこれらの例によって何ら限定されるものではない。 The present invention will be specifically described below with reference to examples and comparative examples, but the present invention is not limited to these examples.
軽油基材１〜４
以下の実施例及び比較例において、表１に示す性状の軽油基材１〜４を用いた。
軽油基材１は、中東系原油を常圧蒸留して得た直留軽油留分を、触媒としてＮｉ、Ｍｏ及びＰを担持した市販触媒ＨＯＰ−４１４（登録商標、オリエントキャタリスト社製）を用い、反応温度３２０℃、反応圧力６.５ＭＰａ、水素／オイル比３５０ＮＬ／Ｌ、ＬＨＳＶ ０.５ｈｒ-1で水素化精製を行い、軽油留分を分留したものである。
Light oil base 1-4
In the following examples and comparative examples, light oil bases 1 to 4 having properties shown in Table 1 were used.
The light oil base 1 is a straight-run gas oil fraction obtained by atmospheric distillation of Middle Eastern crude oil, and a commercially available catalyst HOP-414 (registered trademark, manufactured by Orient Catalyst Co.) carrying Ni, Mo and P as a catalyst. Used, hydrorefining was performed at a reaction temperature of 320 ° C., a reaction pressure of 6.5 MPa, a hydrogen / oil ratio of 350 NL / L, and an LHSV of 0.5 hr −1 to fractionate a light oil fraction.
軽油基材２は、中東系原油を常圧蒸留して得た直留軽油留分と熱分解軽油留分との混合油を、触媒としてＮｉ、Ｍｏ及びＰを担持した市販触媒ＨＯＰ−４１４を用い、反応温度３６０℃、反応圧力６.５ＭＰａ、水素／オイル比３５０ＮＬ／Ｌ、ＬＨＳＶ ０.５ｈｒ-1で水素化精製を行い、軽油留分を分留したものである。 The light oil base material 2 is a mixture of a straight-run light oil fraction obtained by atmospheric distillation of Middle Eastern crude oil and a pyrolysis light oil fraction, and a commercial catalyst HOP-414 carrying Ni, Mo and P as a catalyst. Used, hydrorefining was performed at a reaction temperature of 360 ° C., a reaction pressure of 6.5 MPa, a hydrogen / oil ratio of 350 NL / L, and LHSV of 0.5 hr −1 to fractionate a light oil fraction.
軽油基材３は、中東系原油を常圧蒸留して得た直留軽油留分と熱分解軽油留分との混合油を、触媒としてＮｉ、Ｍｏ及びＰを担持した市販触媒ＨＯＰ−４１４を用い、反応温度３５０℃、反応圧力６.５ＭＰａ、水素／オイル比３５０ＮＬ／Ｌ、ＬＨＳＶ １.０ｈｒ-1で水素化精製を行い、軽油留分を分留したものである。 The light oil base material 3 is a mixture of a straight-run light oil fraction obtained by atmospheric distillation of Middle Eastern crude oil and a pyrolysis light oil fraction, and a commercial catalyst HOP-414 carrying Ni, Mo and P as a catalyst. Used, hydrorefining was performed at a reaction temperature of 350 ° C., a reaction pressure of 6.5 MPa, a hydrogen / oil ratio of 350 NL / L, and LHSV of 1.0 hr −1 , and a light oil fraction was fractionated.
軽油基材４は、中東系原油を常圧蒸留して得た直留灯油留分を、触媒としてＮｉ、Ｍｏ及びＰを担持した市販触媒ＨＯＰ−４１２（登録商標、オリエントキャタリスト社製）を用い、反応温度３００℃、反応圧力３ＭＰａ、水素／オイル比２００Ｎｌ／Ｌ、ＬＨＳＶ ３.０ｈｒ-1で水素化精製を行い、灯油留分を分留したものである。 The light oil base 4 is a straight-run kerosene fraction obtained by atmospheric distillation of Middle Eastern crude oil, and a commercial catalyst HOP-412 (registered trademark, manufactured by Orient Catalyst Co.) carrying Ni, Mo and P as a catalyst. The kerosene fraction was fractionated by hydrorefining at a reaction temperature of 300 ° C., a reaction pressure of 3 MPa, a hydrogen / oil ratio of 200 Nl / L, and LHSV of 3.0 hr −1 .
なお、各物性について、密度はＪＩＳ Ｋ ２２４９、硫黄分はＪＩＳ Ｋ ２５４１、動粘度（３０℃）は、ＪＩＳ Ｋ ２２８３、蒸留性状はＪＩＳ Ｋ ２２５４、芳香族分は石油学会法ＪＰＩ−５Ｓ−４９−９７、アニリン点はＪＩＳ Ｋ ２２５６、ゴム膨潤特性である体積変化率は、ゴムとしてＮＢＲを用いＪＩＳ Ｋ ６２５８により測定した。 As for each physical property, the density is JIS K 2249, the sulfur content is JIS K 2541, the kinematic viscosity (30 ° C.) is JIS K 2283, the distillation property is JIS K 2254, and the aromatic content is JIS K-5S-49. -97, the aniline point was measured according to JIS K 2256, and the volume change rate, which is a rubber swelling property, was measured according to JIS K 6258 using NBR as the rubber.
実施例１〜３、比較例１〜２
これらの軽油基材１〜４を表２の上部に示す配合量で配合し、実施例１〜３、比較例１〜２の軽油を調製した。調製された軽油の性状を表２に併せて示す。実施例１〜３のようにアニリン点が６５.０〜７５.０℃となるように配合することにより、ゴム膨潤性における体積変化率を６〜１２容量％とすることができることがわかる。比較例１では、アニリン点が７７.０℃を超えると、ゴム膨潤性が悪化し、比較例２では、芳香族分が実施例１とほぼ同じであってもアニリン点が７７.０℃を超えると、ゴム膨潤性が悪化することがわかる。
Examples 1-3, Comparative Examples 1-2
These light oil base materials 1-4 were mix | blended with the compounding quantity shown to the upper part of Table 2, and the light oil of Examples 1-3 and Comparative Examples 1-2 was prepared. The properties of the prepared light oil are shown together in Table 2. It turns out that the volume change rate in rubber swellability can be 6-12 volume% by mix | blending so that an aniline point may be 65.0-75.0 degreeC like Examples 1-3. In Comparative Example 1, when the aniline point exceeds 77.0 ° C., the rubber swellability deteriorates. In Comparative Example 2, even if the aromatic content is almost the same as in Example 1, the aniline point is 77.0 ° C. When it exceeds, it turns out that rubber swelling property deteriorates.
本発明によれば、硫黄分１０ｐｐｍ以下と超低硫黄分でありながら、適度なゴム膨潤性を有する低硫黄軽油を安定に製造する製造方法が提供される。
ADVANTAGE OF THE INVENTION According to this invention, the manufacturing method which manufactures the low sulfur light oil which has moderate rubber | gum swelling property stably while having a sulfur content of 10 ppm or less and an ultra-low sulfur content is provided.
Claims (2)
Initial boiling point of the gas oil produced is the one hundred and fifty to two hundred and two ° C., aromatics content of 10 to 27 volume%, kinematic viscosity of the low sulfur diesel fuel of claim 1 wherein the 1.8~5.5mm 2 / s Production method.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2006016541A (en) * | 2004-07-02 | 2006-01-19 | Idemitsu Kosan Co Ltd | Fuel oil composition |
| JP2009102559A (en) * | 2007-10-25 | 2009-05-14 | Cosmo Oil Co Ltd | Fuel oil composition for diesel engine |
| JP2012197456A (en) * | 2012-07-25 | 2012-10-18 | Cosmo Oil Co Ltd | Fuel oil composition for diesel engine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2006016541A (en) * | 2004-07-02 | 2006-01-19 | Idemitsu Kosan Co Ltd | Fuel oil composition |
| JP4615913B2 (en) * | 2004-07-02 | 2011-01-19 | 出光興産株式会社 | Fuel oil composition |
| JP2009102559A (en) * | 2007-10-25 | 2009-05-14 | Cosmo Oil Co Ltd | Fuel oil composition for diesel engine |
| JP2012197456A (en) * | 2012-07-25 | 2012-10-18 | Cosmo Oil Co Ltd | Fuel oil composition for diesel engine |
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