Using a three-stage hydrogenation process, high-quality 150 bright stock (150BS) was produced from light DAO (LDAO, light deasphalted oil), which was obtained from vacuum residue of heavy naphthenic crude oil of Zo...Using a three-stage hydrogenation process, high-quality 150 bright stock (150BS) was produced from light DAO (LDAO, light deasphalted oil), which was obtained from vacuum residue of heavy naphthenic crude oil of Zone No.9 in Xinjiang. The 150BS product, whose viscosity index is greater than 90, is colorless and has good viscosity-temperature characteristics. This product turns out to be an excellent blending component of high-grade engine oil. And with the 150BS as a feed, very high-viscosity white oil was also produced by a further hydrofining step to substantially reduce the amount of polyaromatics contained in the feed.展开更多
随着海洋石油开采的不断深入,海洋石油固定平台作为重要的生产设施,对安全性和可靠性的需求日益增加。应急电源作为固定平台的重要组成部分,在应对突发事件和断电情况时提供电力支持方面具有至关重要的作用。因此,针对海洋石油固定平台...随着海洋石油开采的不断深入,海洋石油固定平台作为重要的生产设施,对安全性和可靠性的需求日益增加。应急电源作为固定平台的重要组成部分,在应对突发事件和断电情况时提供电力支持方面具有至关重要的作用。因此,针对海洋石油固定平台应急电源的设计问题进行深入研究和分析。通过介绍海洋石油固定平台的特点,分析现有海洋石油固定平台应急电源的设计方案及其优缺点,结合实际需求提出一种基于多目标白鲨优化(Multi-Objective White Shark Optimizer,MOWSO)算法的柴油发电机组与储能系统相结合的方案。经过实验模拟和数据分析,该方案具备较高的可靠性和稳定性,能够满足海洋石油固定平台关键设备的电力需求。展开更多
Crude and used engine oil degrading ability of two white rot fungi Pleurotus ostreatus and P. pulmonarius were investigated for six months. One hundred grams of sterilized soil moistened with 75% distilled water (w/v)...Crude and used engine oil degrading ability of two white rot fungi Pleurotus ostreatus and P. pulmonarius were investigated for six months. One hundred grams of sterilized soil moistened with 75% distilled water (w/v) were weighed into 9 × 9 × 4 cm (350 cm3) jam bottles and mixed thoroughly with bonny light crude oil and used engine oil at different concentrations (0%, 5%, 10%, 15%, 25% and 30%), separately. Each bottle was then inoculated with two agar plugs of a vigorously grown mycelium of P. ostreatus and P. pulmonarius using a sterile cork borer. The bottles were incubated at room temperature for 6 months. The mycelia-ramified waste was separated from soils and analysed for physicochemical parameters such as organic matter, carbon, nitrogen, phosphorus, potassium, pH and total hydrocarbon content, (THC) after drying. The organic carbon, nitrogen and phosphorus contents in contaminated and inoculated soils were increased after six months. However, decrease in potassium, pH and THC occurred in these soils after the period of investigation. P. ostreatus reduced the initial THC to 8% and 9% in soils contaminated with 20% of crude and engine oils, respectively, which was lower than that of P. pulmonarius. The two white rot fungi could be exploited in bioremediation of soils contaminated with bonny light crude and used engine oils.展开更多
文摘Using a three-stage hydrogenation process, high-quality 150 bright stock (150BS) was produced from light DAO (LDAO, light deasphalted oil), which was obtained from vacuum residue of heavy naphthenic crude oil of Zone No.9 in Xinjiang. The 150BS product, whose viscosity index is greater than 90, is colorless and has good viscosity-temperature characteristics. This product turns out to be an excellent blending component of high-grade engine oil. And with the 150BS as a feed, very high-viscosity white oil was also produced by a further hydrofining step to substantially reduce the amount of polyaromatics contained in the feed.
文摘随着海洋石油开采的不断深入,海洋石油固定平台作为重要的生产设施,对安全性和可靠性的需求日益增加。应急电源作为固定平台的重要组成部分,在应对突发事件和断电情况时提供电力支持方面具有至关重要的作用。因此,针对海洋石油固定平台应急电源的设计问题进行深入研究和分析。通过介绍海洋石油固定平台的特点,分析现有海洋石油固定平台应急电源的设计方案及其优缺点,结合实际需求提出一种基于多目标白鲨优化(Multi-Objective White Shark Optimizer,MOWSO)算法的柴油发电机组与储能系统相结合的方案。经过实验模拟和数据分析,该方案具备较高的可靠性和稳定性,能够满足海洋石油固定平台关键设备的电力需求。
文摘Crude and used engine oil degrading ability of two white rot fungi Pleurotus ostreatus and P. pulmonarius were investigated for six months. One hundred grams of sterilized soil moistened with 75% distilled water (w/v) were weighed into 9 × 9 × 4 cm (350 cm3) jam bottles and mixed thoroughly with bonny light crude oil and used engine oil at different concentrations (0%, 5%, 10%, 15%, 25% and 30%), separately. Each bottle was then inoculated with two agar plugs of a vigorously grown mycelium of P. ostreatus and P. pulmonarius using a sterile cork borer. The bottles were incubated at room temperature for 6 months. The mycelia-ramified waste was separated from soils and analysed for physicochemical parameters such as organic matter, carbon, nitrogen, phosphorus, potassium, pH and total hydrocarbon content, (THC) after drying. The organic carbon, nitrogen and phosphorus contents in contaminated and inoculated soils were increased after six months. However, decrease in potassium, pH and THC occurred in these soils after the period of investigation. P. ostreatus reduced the initial THC to 8% and 9% in soils contaminated with 20% of crude and engine oils, respectively, which was lower than that of P. pulmonarius. The two white rot fungi could be exploited in bioremediation of soils contaminated with bonny light crude and used engine oils.
