A new method of upgrading 6# solvent oils using different ionic liquids as catalysts in a continuous apparatus is studied in this paper.The results show that aromatics,olefins and small quantity of sulfurs can be remo...A new method of upgrading 6# solvent oils using different ionic liquids as catalysts in a continuous apparatus is studied in this paper.The results show that aromatics,olefins and small quantity of sulfurs can be removed simultaneously.Using complex ionic liquid modified with CuCl as catalyst,olefins are removed completely,the mass concentrations of aromatics and sulfurs in solvent oil are 0.36% and 0.0058%,respectively,and the bromic index is zero.The sulfur removal rate decreases gradually with increasing of running time.The refined 6# solvent oil is corresponded to the quality standards of GB16629-1996,which request that the mass concentrations of aromatics,sulfurs and bromic index are 1%,0.012% and 1000,respectively.The loss of solvent oil is less than 3%.展开更多
Heavy crude oil(HCO)production,processing,and transportation forms several practical challenges to the oil and gas industry,due to its higher viscosity.Understanding the shear rheology of this HCO is highly important ...Heavy crude oil(HCO)production,processing,and transportation forms several practical challenges to the oil and gas industry,due to its higher viscosity.Understanding the shear rheology of this HCO is highly important to tackle production and flow assurance.The environmental and economic viability of the conventional methods(thermal or dilution with organic solvents),force the industry to find an alternative.The present study was constructed to investigate the effect of eco-friendly ionic liquids(ILs)on the HCO's rheology,at high temperature and high pressure.Eight different alkyl ammonium ILs were screened for HCO's shear rheology at the temperatures of 25-100℃ and for pressures 0.1e10 MPa.The addition of ILs reduced the HCO's viscosity substantially from 25 to 33%from their original HCO viscosity.Also,it aids to reduce the yield stress to about 15-20%at all the studied experimental conditions.Furthermore,the viscoelastic property of the HCO was studied for both strain-sweep and frequencysweep and noticed the ILs helps to increase HCO's loss modulus(G00)by reducing storage modulus(G0),it leads to the reduction of the crossover point around 25-32%than the standard HCO.Mean the ILs addition with HCO converts its solid-like nature into liquid-like material.Besides,the effect ILs chain length was also studied and found the ILs which has lengthier chain length shows better efficiency on the flow-ability.Finally,the microscopic investigation of the HCO sample was analyzed with and without ILs and witnessed that these ILs help to fragment the flocculated HCO into smaller fractions.These findings indicate that the ILs could be considered as the better alternative for efficient oil production,processing,and transportation.展开更多
基金Supported by the National Natural Science Foundation of China （20676150）, the Natural Science Foundation of Beijing （2052010）, and the Science and Technology Venture Foundation of the Petro China Company Limited （2005[68]）.
文摘A new method of upgrading 6# solvent oils using different ionic liquids as catalysts in a continuous apparatus is studied in this paper.The results show that aromatics,olefins and small quantity of sulfurs can be removed simultaneously.Using complex ionic liquid modified with CuCl as catalyst,olefins are removed completely,the mass concentrations of aromatics and sulfurs in solvent oil are 0.36% and 0.0058%,respectively,and the bromic index is zero.The sulfur removal rate decreases gradually with increasing of running time.The refined 6# solvent oil is corresponded to the quality standards of GB16629-1996,which request that the mass concentrations of aromatics,sulfurs and bromic index are 1%,0.012% and 1000,respectively.The loss of solvent oil is less than 3%.
文摘Heavy crude oil(HCO)production,processing,and transportation forms several practical challenges to the oil and gas industry,due to its higher viscosity.Understanding the shear rheology of this HCO is highly important to tackle production and flow assurance.The environmental and economic viability of the conventional methods(thermal or dilution with organic solvents),force the industry to find an alternative.The present study was constructed to investigate the effect of eco-friendly ionic liquids(ILs)on the HCO's rheology,at high temperature and high pressure.Eight different alkyl ammonium ILs were screened for HCO's shear rheology at the temperatures of 25-100℃ and for pressures 0.1e10 MPa.The addition of ILs reduced the HCO's viscosity substantially from 25 to 33%from their original HCO viscosity.Also,it aids to reduce the yield stress to about 15-20%at all the studied experimental conditions.Furthermore,the viscoelastic property of the HCO was studied for both strain-sweep and frequencysweep and noticed the ILs helps to increase HCO's loss modulus(G00)by reducing storage modulus(G0),it leads to the reduction of the crossover point around 25-32%than the standard HCO.Mean the ILs addition with HCO converts its solid-like nature into liquid-like material.Besides,the effect ILs chain length was also studied and found the ILs which has lengthier chain length shows better efficiency on the flow-ability.Finally,the microscopic investigation of the HCO sample was analyzed with and without ILs and witnessed that these ILs help to fragment the flocculated HCO into smaller fractions.These findings indicate that the ILs could be considered as the better alternative for efficient oil production,processing,and transportation.
