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- Evaluation result showed that the catalyst decreasing olefin content in gasoline was ideal after RFG-DMR in the system catalyst inventory reached 83%. 该催化剂占系统藏量83%25时进行的标定结果表明:该剂降低汽油烯烃含量效果比较明显。
- Based on the trends of development technology in decreasing olefin of FCC gasoline,the further refinement technology of etherification,aromatization and hydrogenation refinement,were reviewed. 针对近期的发展动态,从芳构化改质技术、加氢精制改质技术及醚化技术等方面介绍了降低催化裂化汽油烯烃含量的后加工技术的进展。
- Based on the trends of developing technologies in decreasing olefin of FCC gasoline, the technologies such as FCC technology, etherification, aromatization and alkylation are reviewed in this paper. 随着环保意识的加强,对汽油中的烯烃含量限制越来越严格,针对近期的发展动态,从催化裂化(简称FCC)技术、醚化技术、芳构化技术和烷基化技术等方面介绍了FCC汽油降烯烃生产技术的进展。
- The birthrate is on the decrease. 人口出生率正在下降。
- The decrease in unemployment was 30 percent. 失业人数减少了百分之三十。
- The government projected a tax decrease. 政府计划降低税收。
- There has been a decrease in our imports. 我们的进口减少了。
- Is your production on the decrease? 你们的产量在减少吗?
- A decrease in signal power as measured between two points. 信号能量在两点间测量出来的减小量。参阅signal。
- Decrease olefin 降烯烃
- A decrease, especially a small or incremental one. 减少尤指小规模或逐步增加者的减少
- A local newspaper remarks that crime is on the decrease. 一家地方报纸评论说犯罪案件在减少。
- There has been a steady decrease in population in this city. 这个城市的人口在持续下降。
- They are making further efforts to decrease military spending. 他们正在做进一步的努力来减少军费开支。
- Olefin gas closely approximates air. 烯空气跟空气十分近似。
- A local newspaper remarked that crime was on the decrease. 一家地方报纸评论说犯罪案件在减少。
- They are making every effort to decrease the production cost. 他们正尽力减少生产成本。
- There has been a decrease in the number of murders on the city. 城里凶杀案件有所减少。
- These measures will help decrease the cost of production. 这些措施有助於降低生产成本。
- Application of Catalyst for Decreasing Olefin Content and MGD Process in the Low Olefin Gasoline Production 低烯烃汽油生产中降烯烃催化剂和MGD工艺的应用
