论文部分内容阅读
原油精馏塔是通过常压蒸馏能把原油切割成汽油、煤油、轻柴油、重柴油和重油等几种产品馏分,为进一步深度炼化做好准备的复合塔,而且能量消耗达到炼油厂能量消耗的20%~25%。在复合塔内,汽油、煤油、柴油等馏分之间只有精馏段而没有提馏段,侧线馏分中会含有相当数量的轻馏分,这样不仅影响本侧线产品的质量,增加能量消耗,而且降低了较轻馏分的收率。所以通常在常压塔的旁边需要设置若干个进行气-液相变化的冷凝器,通过相变化来取走多余的热量,同时控制产品质量。本文通过实际操作和理论计算相结合,拟合了经验算法和公式,以期望找到产品质量与回流取热的关系,对原油分馏回流操作提供一定的理论支撑,从而达到节能减排的作用。
Crude oil distillation column is crude oil can be cut by atmospheric distillation into gasoline, kerosene, light diesel oil, heavy diesel and heavy oil and other product fractions, to further depth refining prepared complex tower, and energy consumption to refinery energy Consumption of 20% to 25%. In the complex, only gasoline and kerosene, diesel and other distillates between the rectification section without stripping section, the sidestream will contain a considerable amount of light fractions, which not only affect the quality of the sideline products, increase energy consumption, but also reduce The yield of lighter fractions. Therefore, usually in the atmospheric tower next to the need to set up a number of gas-liquid phase change of the condenser, phase change to remove excess heat, while controlling product quality. In this paper, the actual operation and theoretical calculation are combined, and the empirical algorithms and formulas are fitted in order to find the relationship between product quality and reflux heat removal, and to provide theoretical support for the fractional refluxing operation of crude oil so as to achieve the function of energy conservation and emission reduction.