Ionic liquids can replace conventional solvents in aromatic/aliphatic extractions, if they have higher aromatic distribution coef- ficients and higher or similar aromatic/aliphatic selectivities. Also physical propert...Ionic liquids can replace conventional solvents in aromatic/aliphatic extractions, if they have higher aromatic distribution coef- ficients and higher or similar aromatic/aliphatic selectivities. Also physical properties, such as density and viscosity, must be taken into account if a solvent is applied in an industrial extraction process. Cyano-containing ionic liquids have a lower den- sity than the benchmark solvent sulfolane and a higher viscosity. Sulfolane is from a hydrodynamic point of view a better sol- vent than ionic liquids for the aromatic/aliphatic extraction. The most suitable ionic liquids for the extraction of aromatic hy- drocarbons from a mixture of aromatic and aliphatic hydrocarbons are [bmim]C(CN)3, [3-mebupy]N(CN)2, [3-mebupy]C(CN)3, [3-mebupy]B(CN)4 and [mebupyrr]B(CN)4. They have factors of 1.2-2.3 higher mass-based distribution coefficients than sul- folane and a similar or higher, up to a factor of 1.9 higher, aromatic/aliphatic selectivity than sulfolane. The IL [3-mebupy]N(CN)2 is a better extractant for the separation of toluene from a mixture of toluene/n-heptane in a pilot plant Ro- tating Disc Contactor (RDC) than sulfolane.展开更多
介绍一种用于永磁同步电机控制的转子磁极位置检测方法,提出了一种应用软件算法实现的全数字的RDC(轴角变换器)。将传统的RDC重构为龙伯格(Luenberger)观测器的形式,应用这种重构软件算法实现的RDC具有高精度、较小的相位滞后、高可靠...介绍一种用于永磁同步电机控制的转子磁极位置检测方法,提出了一种应用软件算法实现的全数字的RDC(轴角变换器)。将传统的RDC重构为龙伯格(Luenberger)观测器的形式,应用这种重构软件算法实现的RDC具有高精度、较小的相位滞后、高可靠性和稳定性的特点。并利用Visual Model Q软件实现了整个系统的仿真,仿真结果验证基于龙伯格观测器的RDC磁极位置检测算法的正确性。展开更多
文摘Ionic liquids can replace conventional solvents in aromatic/aliphatic extractions, if they have higher aromatic distribution coef- ficients and higher or similar aromatic/aliphatic selectivities. Also physical properties, such as density and viscosity, must be taken into account if a solvent is applied in an industrial extraction process. Cyano-containing ionic liquids have a lower den- sity than the benchmark solvent sulfolane and a higher viscosity. Sulfolane is from a hydrodynamic point of view a better sol- vent than ionic liquids for the aromatic/aliphatic extraction. The most suitable ionic liquids for the extraction of aromatic hy- drocarbons from a mixture of aromatic and aliphatic hydrocarbons are [bmim]C(CN)3, [3-mebupy]N(CN)2, [3-mebupy]C(CN)3, [3-mebupy]B(CN)4 and [mebupyrr]B(CN)4. They have factors of 1.2-2.3 higher mass-based distribution coefficients than sul- folane and a similar or higher, up to a factor of 1.9 higher, aromatic/aliphatic selectivity than sulfolane. The IL [3-mebupy]N(CN)2 is a better extractant for the separation of toluene from a mixture of toluene/n-heptane in a pilot plant Ro- tating Disc Contactor (RDC) than sulfolane.
文摘介绍一种用于永磁同步电机控制的转子磁极位置检测方法,提出了一种应用软件算法实现的全数字的RDC(轴角变换器)。将传统的RDC重构为龙伯格(Luenberger)观测器的形式,应用这种重构软件算法实现的RDC具有高精度、较小的相位滞后、高可靠性和稳定性的特点。并利用Visual Model Q软件实现了整个系统的仿真,仿真结果验证基于龙伯格观测器的RDC磁极位置检测算法的正确性。
