硒精炼车间工程设计实践

硒是一种用途非常广泛的稀散元素,本文在国内某硒精炼车间设计实践的基础上,对该硒精炼车间设计中的若干工艺参数、设备选型、厂房配置进行了归纳和总结。     

Introduction of Karamay Petrochemical Company

Established in 1959, Karamay Petrochemical Company（KPC） is an oil refining enterprise directly managed by PetroChina. It is located in Karamay Oilfield in the northwestern Xinjiang.     

Study on Laboratory Method for Refining of SR Diesel Fuel

The method for refining the straight-run diesel fuel was studied in laboratory scale in order to make the acid number of diesel fraction comply with the standard while removing the naphthenic acids contained in diesel without causing environmental pollution. After comparing the effect of refining using three solvents, the isopropyl alcohol-HOA was specified as the best solvent. Meanwhile, the relationship between the acid number of diesel fraction and the amount of solvent used and the relationship between the concentration of solvent and temperature and the stability of diesel in terms of its acid number were also investigated. Experimental results had shown that when the mass fraction of the HOA-IPA solvent was 20% at a dosage of 17 mL of the solvent and a temperature of 30℃, the acid number of the refined diesel fraction was 0.015 mg KOH/g with a good stability of acidity in the diesel fraction,     

Construction of One-Million-Ton-Class Ethylene Project Kicked off at Dushanzi

The construction of a 10-Mt/a oil refining and 1.0 Mt/a ethylene project at PetroChina Dushanzi Petrochemical Company （DPC） was kicked off in August 2005. This project includes 20 petroleum refining units and 12 chemical units with the budgeted investment amounting to 26.2 billion RMB. The construction of refining units is expected to be finished in 2007, while the construction of chemical units is slated for completion in 2008. After commissioning of the process units a production capacity of 5.5 Mt/a of finished petroleum products and 1.82 Mt/a of chemical products will be formed.     

文章摘要的写作要求

（1）用第三人称。作为一种可供阅读和检索的独立使用的文体，摘要只能用第三人称而不用其他人称来写。 （2）简短精炼，明确具体。简短，指篇幅短，一般要求50～300字（依摘要类型而定）；精炼，指摘录出原文的精华，无多余的话：明确具体，指表意明白，不含糊，无空泛、笼统的词语，应有较多而有用的定性和定量的信息。     

SGJ系列铝液精炼及变质效果检测仪

SGJ-Ⅰ型铝合金液精炼效果在线快速检测仪采用减压凝固试样、密度测试方法，定性与定量测试相结合，可广泛应用于各种铝合金的精炼效果检测，使用方便、测试数据准确、快速，在铝合金液精炼后静置的5分钟，即可得到铝合金液精炼效果，保证了铝铸件生产中精炼工序可靠性。SGJ-Ⅱ型铝合金液精炼、变质效果在线快速检测仪是在SGJ-Ⅰ铝合金液精炼效果在快速检测仪基础上研制开发的二代产品，     

应用低压低热值煤气作为竖炉熔铜的燃料

介绍了利用低压力、低热值的城市煤气作为竖护熔铜能源方面的探索，包括设置小型贮气罐的方法、管道系统的设计以及使用效果。经生产实践证明，在采取适当措施以后，城市煤气也能像天然气、石油裂化气那样用作竖炉熔铜的燃料。这对于受客观条件限制而只能使用低压、低热值燃气的大型大型生产设备来说，无疑是值得借鉴的。     

铜精炼反射炉筑炉实践

文章详细介绍了铜精炼反射炉各主要部位的砌筑方法