毕业设计(论文)年产300万吨原油常压塔工艺设计与计算.doc

摘 要 本设计为300万吨/年常压塔工艺设计与计算。本设计的主要工作为常压塔工艺设计、塔设备尺寸确定及水利学校核。 设计中，为了使塔内各段热负荷均匀，设置可二个中段回流。对常压塔的闪蒸段温度，塔底汽提用量及取热分配等诸项操作条件进行了优化。塔顶回流、一中、二中回流分配比分别为40%、25%、35%。第一中段回流取热17.685GJ/h，第二中段回流取热24.759GJ/h，进料为365625KG/h，塔底汽提蒸汽5233.56KJ/h，塔顶轻石脑油5813.44KJ/h，塔顶冷回流7072.11kg/h，常一线11992.5KJ/h，常二线为63947.81KJ/h，常三线16197.19KJ/h，塔底重油261677.8KJ/h。 此常压塔分为46层塔板，进料段以下为条型浮阀，塔盘42层，进料段以下为浮阀塔盘，塔盘4层，一线抽出板为第36层，一中抽出板为第32层，二线抽出板为第22层，二中抽出板为第18层，三线抽出板第10层。 关键词：常减压装置；蒸馏；设计 Abstract These design for 300t/y crude oil unit processing-air distillation part. The design basis data supply from petroleum refining station of the luoyang petrifaction engineering 《The appreciate of the Liaohe commingled crude》. The major word of these designing is process design of atmospheric the distillation tower, determining the tower equipment size and proofing of water conservation. In this designing, in order to uniform each segment hot-load in this tower, as a result of reclaim the whole oil vapour internal latent heat of the top of tower nistead of set up circulating reflux of the atmospheric distillation. Because of flash section temperature of atmostpheric distillation, it process the optimization of the steam stripping volume in tower bottomand heat distribution. The partition ratio of top of tower circumfluence、one media circumfluence, two media circumfluence partingly is 40%、25%、35%. Taken hot by the first intermediate reflux is 17.685GJ/h. Taken hot by the second intermediate reflux is 24.759GJ/h. Input is 365625kg/h. It is the stripping steam of the tower bottom 5233.56KJ/h. It is the light naphtha of thet op of tower 5813.44KJ/h. It is 7072.11kg/h to the cold reflux of the top of tower. It is 11992.5KJ/h to atmospheric distillation tower the first siding. It is 11992.5KJ/h to atmospheric distillation tower the 2nd siding. It is 11992.5KJ/h to atmospheric distillation tower the 3rd siding. It is 261677.8KJ/h to tower bottom heavy naphtha. This atmospheric distillation tower split into forty-six layer tower tray. F