【摘 要】
：
Crude oil is a kind of water/oil emulsion,which the oil phase consists of organic molecules with different molecular weights such as alkanes,paraffin,asphaltene,and resins.Due to the change in physicochemical conditions during the production,transportatio
【机 构】
：
Chemical Process Design Research Group, ACECR, Faculty of Engineering, University of Tehran, Tehran,
论文部分内容阅读
Crude oil is a kind of water/oil emulsion,which the oil phase consists of organic molecules with different molecular weights such as alkanes,paraffin,asphaltene,and resins.Due to the change in physicochemical conditions during the production,transportation,storage,and refining,heavier molecules can precipitate from crude oil.Thus,viscous sludge formed at the bottom of storage tanks can cause many problems including reduction of storage capacity of tank,oil contamination,corrosion,repair costs,environmental pollution,etc.The reduction of sludge viscosity can be achieved by reduction of its interfacial tension.In this study,different chemical and physical factors,influencing prepared emulsions (made of sludge,water and surfactant),such as surfactants,solvents,temperature,pressure,and mixing conditions were investigated.Results showed that non-ionic surfactants (like bitumen emulsifier),and solvents (such as mixed xylene,AW-400,and AW-402),injection of additives,applying pressure,and mixing operations had a positive effect on reduction of emulsion viscosity.All experiments were carried out with sludge obtained from crude oil storage tanks at Kharg Island,Iran.
其他文献
An experimental study was performed to investigate the impact of low salinity water on wettability alteration in carbonate core samples from southern Iranian reservoirs by spontaneous imbibition.In this paper,the effect of temperature,salinity,permeabilit
In-depth understanding of interactions between crude oil and CO2 provides insight into the CO2-based enhanced oil recovery (EOR) process design and simulation.When CO2 contacts crude oil,the dissolution process takes place.This phenomenon results in the o
With shale oil reservoir pressure depletion and recovery of hydrocarbons from formations,the fracture apertures and conductivity are subject to reduction due to the interaction between stress effects and proppants.Suppose most of the proppants were concen
The present study investigated the wax deposition tendencies of a light Malaysian crude oil (42.4° API),and the wax inhibiting potential of some surfactants and their blends with nanoparticles.With the knowledge that the majority of the wax inhibition res
This paper investigates the relationship between China\'s fuel ethanol promotion plan and food security based on the interactions between the crude oil market,the fuel ethanol market and the grain market.Based on the US West Texas Intermediate (WTI) cru
Seven types of activated carbon were used to investigate the effect of their structure on separation of CO2 from (H2 + CO2) gas mixture by the adsorption method at ambient temperature and higher pressures.The results showed that the limiting factors for s
Oil-soluble catalysts could be of special significance for reducing the viscosity of heavy crude oil,because of their good dispersion in crude oil and high catalytic efficiency toward aquathermolysis.Ferric oleate was synthesized and applied as catalyst i
This study develops a bottom-up model to quantitatively assess the comprehensive effects of replacing traditional petroleum-powered vehicles with natural gas vehicles (NGVs) in China based on an investigation of the direct energy consumption and critical
Ultrastable Y zeolite (USY)-supported Pt catalyst was prepared by gas-bubbling-assisted membrane reduction.The influence of reaction conditions and the metal and acid sites of catalysts on the catalytic performance of catalyst in hydrogenation and selecti
This paper examines the relationships between natural resource dependence,public education investment,and human capital accumulation.It addresses why the “blessing” of abundant natural resources often turns into a “curse” in many countries and regions,foc