大家帮忙看看我的英文摘要有没有错误？ 首先，对楼主的翻译水平高度认可，本科英语水平能达到这种水平令人佩服！ 译文根据本人的翻译习惯而为，仅供参考，有以下几点说明： 1. 第一、 2 段中的两处标红是我根据自己的理解在翻译中加上的，否则没有主语，当然中文可以不加。 2. “剂油比” the ratio of catalyst/s olvent/agent to oil ，“剂”是指“溶剂 s olvent ” 还是“催化剂 catalyst ”？抑或统称“ agent ”，请楼主自定。 3. 第 3 段中的“ 轻柴油中的硫含量”应该是指“量”吧，不然含量如何有“摩尔比”？另外，“在超声波作用下” under ultrasonic conditions， 放在离主句较近的位置，因为前面都是讲具体反应条件。 4. 其它改动地方请楼主自行斟酌。 直馏柴油萃取脱硫工艺研究 study on extraction desulfurization of straight-run diesel 摘要：随着柴油硫含量标准的日趋严格，柴油深度脱硫已成为当今炼油企业迫切而重要的任务。柴油氧化 — 萃取脱硫技术以其反应条件温和、脱硫率高等成为研究热点。 （本工艺） 以燕山石化直馏轻柴油为研究对象，以过氧化氢为氧化剂，甲酸为催化剂，无机硫酸为助催化剂，将柴油中的硫化物 物 氧化成砜类物质，然后再用 nmp （ n- 甲基吡咯烷酮）等强极性萃取剂，通过离心萃取法脱除。重点考察了不同萃取剂、萃取方式、剂油比和萃取级数等萃取条件对柴油脱硫效果的影响，确定了柴油氧化与萃取脱硫的最佳工艺条件。 abstract: the deep desulfurization of diesel has become an urgent task for refineries at present due to the increasingly stringent sulfur content specifications of diesel. featured with its mild reaction conditions and high sulfur removal efficiency,oxidation-extraction desulfurization of diesel(ods) has become an important research hotspot. with yanshan light straight-run(lsr) diesel as the target, the ods process oxidizes the sulfur compounds in diesel to sulfones with hydrogen peroxide as oxidant, formic acid as catalyst and inorganic sulfuric acid as cocatalyst, and then remove the resulted sulfones by centrifugal extraction with certain strong polar solvents(such as nmp, etc.) as extractants . this paper focuses on the effects of different extraction agents, extraction modes, the ratios of agent to oil and extraction stages on sulfur removal to determine the optimum process conditions for diesel oxidation and extraction desulfurization. 实验结果表明，离心萃取脱硫效果、萃取收率均明显优于振荡萃取； nmp 的萃取效果优于 dmf （ n,n- 二甲基甲酰胺）；以 95% 的 nmp 为萃取剂、结合离心萃取技术 （， ods ） 能够有效的萃取出柴油的氧化产物砜，且收率在 87~97% 之间。柴油硫含量随离心萃取器转速增大、萃取级数增大而降低，剂油比减小硫含量增大。 the test results indicate that centrifugal extraction effect of desulfurization and extraction yield are significantly better than that of oscillation extraction,nmp extraction effect is better than dmf(n ,n-dimethylformamide ). combined with centrifugal extraction, ods can effectively extract the oxidized sulfone from diesel with 95% nmp as extractant and obtain a yield ranges from 87 to 97%. besides, sulfur content of diesel decreases as centrifugal extractor rotational speed increases or extraction stages increases, but increases as the ratio of agent to oil decreases. 当过氧化氢、甲酸、硫酸和轻柴油中的硫含量摩尔比为 14 ： 14 ： 1 ： 1 ，超声波作用下，反应温度为 50 ℃ ，反应时间 60min ，剂油比 1 ： 1 ，三级离心萃取后，直馏轻柴油硫含量从 3570ppm 降到 47.62ppm ，脱硫率达到 98.67%。 with the molar ratio of hydrogen peroxide, formic acid, sulfuric acid and sulfur of diesel of 14:14:1:1, reaction temperature of 50 ℃ ,reaction time of 60 minutes, the ratio of agent to oil of 1:1, under ultrasonic conditions, the sulfur content of lsr diesel can be reduced from 3570ppm to 47.62ppm through three stage centrifugal extraction with sulfur removal efficiency of 98.7%. 关键词 ：直馏柴油，脱硫，离心萃取 key words: straight-run diesel ,d esulfurization, centrifugal extraction -----------------------------------------------------------------------------------------fyi ————————— 共同学习 共同提高 ——————————— 查看更多
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