英语翻译求翻译一篇学术摘要,请不要用翻译工具逐字翻译,摘 要常减压塔蒸馏装置作为原油的一次加工工艺,在原油加工的总流程中

英语翻译
求翻译一篇学术摘要,请不要用翻译工具逐字翻译,
摘 要
常减压塔蒸馏装置作为原油的一次加工工艺,在原油加工的总流程中占有重要作用,在炼厂具有举足轻重的地位.它的操作平稳是保证石油产品质量的关键.本次设计主要是设计原油年处理能力为 万吨的常压塔,其次为塔板的设计.
设计的基本方案是：初馏塔拔出石脑油,常压塔采取三侧线,常压塔塔顶生产汽油,三侧线分别生产煤油,轻柴油,重柴油.塔底重油作催化裂化或加氢裂化装置的原料.常压塔的设计主要是依据所给的原油实沸点蒸馏数据及产品的恩氏蒸馏数据,计算产品的各物性数据确定切割方案、计算产品收率.参考同类装置确定塔板数、进料及侧线抽出位置,在假设各主要部位的操作温度及操作压力,进行全塔热平衡计算,采取塔顶二级冷凝冷却和两个中段回流.塔顶取热：第一中段回流取热：第二中段回流取热为5：2：3,最后校核各主要部位温度都在允许的误差范围内.
塔板形式选用浮阀塔板,依据常压塔内最大汽、液相负荷处算得塔径为4.2m,板间距取0.8m.这部分最主要的是核算塔板流体力学性能及操作性能,使塔板在适宜的操作范围内操作.
关键词：常压塔,节能,浮阀塔板,流体力学

摘 要 Abstract：
常减压塔蒸馏装置作为原油的一次加工工艺,在原油加工的总流程中占有重要作用,在炼厂具有举足轻重的地位.它的操作平稳是保证石油产品质量的关键.本次设计主要是设计原油年处理能力为 万吨的常压塔,其次为塔板的设计.
As a part of the crude oil processing technology, the atmospheric-vacuum distillation unit plays an important function in the overall technological procedure of crude oil processing. Its smooth operation is critical to the quality assurance of petroleum products. The primary objective of this design is for the atmospheric- vacuum tower with an annual crude oil processing capacity of xx tons; the second design is for the tower trays.
设计的基本方案是：初馏塔拔出石脑油,常压塔采取三侧线,常压塔塔顶生产汽油,三侧线分别生产煤油,轻柴油,重柴油.塔底重油作催化裂化或加氢裂化装置的原料.常压塔的设计主要是依据所给的原油实沸点蒸馏数据及产品的恩氏蒸馏数据,计算产品的各物性数据确定切割方案、计算产品收率.
The basic design is: primary tower extracts the naphtha, the atmospheric-vacuum tower adopts three lateral lines; petroleum is produced at the top of the tower, the three lateral lines separately produce kerosene, light diesel and heavy diesel. The heavy oil at the bottom of the tower will be used as raw material for catalytic cracking unit or hydrocracking unit. The design of the atmospheric-vacuum tower is to calculate the various physical data of products to determine the cutting plan, as well as calculate the product yield basing mainly on the provided true boiling point distillation data of crude oil and the Engler distillation data of products.
参考同类装置确定塔板数、进料及侧线抽出位置,在假设各主要部位的操作温度及操作压力,进行全塔热平衡计算,采取塔顶二级冷凝冷却和两个中段回流.塔顶取热：第一中段回流取热：第二中段回流取热为5：2：3,最后校核各主要部位温度都在允许的误差范围内.
塔板形式选用浮阀塔板,依据常压塔内最大汽、液相负荷处算得塔径为4.2m,板间距取0.8m.这部分最主要的是核算塔板流体力学性能及操作性能,使塔板在适宜的操作范围内操作.
Refer to similar unit to decide on the number of tower trays, feed inlet and lateral line extraction positions. Conduct the heat balance calculation of the tower with the hypothesis of the operating temperature and pressure of the various key positions; adopt tower top two-stage condensing and cooling and two middle-stage reflux. The arrangement of taking temperatures at the tower top, first middle-stage reflux and second middle-stage reflux is 5:3:2. Finally check the temperatures at various key positions are within the permissible deviations.
The type of tray used is the float valve trays; based on the maximum gas-liquid load in the tower, the tower diameter is 4.2 meters, the distance between the trays is 0.8 meter. The most important in this section is to calculate the hydrodynamic and operating performance of the tower trays, so that the tower trays are operating within the suitable operation scope.
关键词：常压塔,节能,浮阀塔板,流体力学
Key words: atmospheric-vacuum tower, energy saving, floating valve tower tray, hydrodynamic.
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