燃油_燃油期货

燃油是什么？

你好，燃油就是汽油了，只是叫法不一样而已。用航空煤油，在原油提炼过程中，纯度指数最高当属航空煤油，向下依次是航空汽油、车用汽油、摩托车和拖拉机用油(低于90号)、燃料油(多用于发电厂、一般小型船舶、工厂等)。航煤还应有较好的低温性、安定性、蒸发性、润滑性以及无腐蚀性，不易起静电和着火危险性小等特点。这些性能都有精确的数据指示来表示。航煤是经直接练制和二次加工从原油中提炼出来的，一般产量不高，只占原油的百分之十几。为调整产品指标，有时要加入适当种类和数量的添加剂。 我国生产的航空煤油净热值每公斤不小于10250大卡，密度不低于0.775克/立方厘米。喷气式飞机的飞行高度在一万米以上，这时高空气温低达-55c~-60c，这就要求航空煤虎护港咎蕃侥歌鞋攻猫油在这样的低温下不能凝固。具体要求航空煤油的冰点指标不得高于-55c~-60c，以便确保飞机在高空能正常飞行。航空煤油的馏程范围会影响发动机的启动性能和是否能完全燃烧，同时馏程情况与煤油本身的密度、低温性能有直接关系。航空煤油的粘度大小会影响发动机喷油嘴的工作情况和燃烧的质量。粘度太大，喷进发动机的油滴大，造成燃烧不完全，降低发动机的出力；粘度过小，使喷出的油雾角度大，射程近，会引起内部过热。由于对航空煤油要求严格，航空煤油多采用一次通过部分转化的工艺，在加工过程中采用共凝胶型催化剂，催化剂量装填多，分子筛含量少，芳烃饱和能力强，得到油品密度具有密度大、烟点高、热值高、芳烃低的特点。 煤油充分燃烧的产物是co2和h2o,但是单质h和c都能氧化燃烧，所以充足的氧气才是充分燃烧的必要条件，而mn取什么值对是否充分燃烧没有关系。 737-800每小时理论蚝油量是2.65吨，最大载油量26吨， 这个数值根据大气环境不同而不同。 747大概在每小时10吨左右。

燃油是如何分类的？

汽车的燃油主要有两种，就是汽油和柴油。飞机用的是航空煤油。

汽油的分类是按照它所含的辛烷值分类的，如90＃，97＃等，辛烷值越高，汽车产生的爆燃的几率越小，也就对发动机越有好处。所以大部分高档车都选用标号较高的汽油。

柴油的分类是按照它的冰点算的，0＃代表气温低于0摄氏度时，它会凝结成固体。同理－10＃代表－10摄氏度时才凝结成固体，这就是北方冬天柴油车都采用标号较低的缘故，防止燃油被冻上bunker fuel grades - how do the four main fuel grades differ from each other? the international standard organization (iso) in cooperation with marine and petroleum industry prepared specificati*** to meet the requirements for marine fuels supplied world wide for use onboard ships. there are 19 categories of residual fuels available internationally. out of these 19, four categories or grades are most frequently supplied and used by ships.

industrial names for the four grades are ifo180, ifo380, mdo and mgo. these relate to the iso grades rme25, rmg35, dmb and dma respectively. industrial nomenclature is based on the fuel viscosity at 50°c. ifo 180 indicates that the viscosity of the fuel is 180 cst at 50°c and ifo 380 fuel will have a viscosity of 380 cst at 50°c. mdo stands for marine diesel oil which is a blend of gas oil and heavy oil. mgo is marine gas oil which is clear and not blended with heavy fuel. iso has specified 11 parameters for residual fuels and 14 parameters for distillate fuels. a specified grade of fuel should meet all the requirements set by iso. see links to the iso 8217 table showing all the grades and the requirements below. ifo180 or rme25 has about 6 to 7 % gas oil in it where as ifo380 or rmg35 has about 3% gas oil. because of the higher gas oil content, price of the ifo180 is higher than the heavier ifo380 grade. in addition to the difference in the gas oil content, requirements for 4 out of 11 parameters are different for the two grades. as you can see from the table, maximum for viscosity, carbon residue, ash content and vanadium are different for the two grades. mdo or dmb is a blend of heavy fuel and gas oil and they are cheaper than pure mgo or dma. requirements are different for both the grades. the iso 8217 table (see below) clearly indicates the differences.市面大概有以下几种油

-10号柴油

90号汽油

93号汽油

97号汽油

98号汽油

好的车就用好点的油，没坏处-10#柴油

0#柴油

90#汽油

93#汽油

97#汽油

98#汽油按辛烷值分啊