A considerable amount of oil contamination is caused by the presence of the trailing oil. This paper aims to simulate and analyze the influences of trailing oil on the quality of oil products in undulating sections. By studying the formation…
Presented here is experimental and theoretical work on phase transitions and separation time scales for CO2-crude oil mixtures with CO2 content ranging from pure to 79 mol %. The experimental work was performed using the wheel flow loop located at…
Emulsification behaviors of crude oil-water system has significant effects on flow pattern and pressure drop of crude oil-water two phase flow. The degree of emulsification, which is greatly affected by shearing intensity, water volume fraction and…
The viscoelastic characteristics of unstable heavy crude-oil-water dispersed mixtures are investigated to improve pipeline transportation. The effects of temperature, dispersed phase volume fraction, and droplet size distribution are considered on…
The rheological characteristics of unstable heavy crude oil-water dispersed mixtures were investigated to improve pipeline transportation. The viscosity of heavy crude oil is 5439 mPa s, and density is 955 kg/m3 at 30 °C. A series of factors,…
To study the influence law between pressure loss of conveyor system and parameters of hydraulic transmission system for cutter-suction mining in submarine natural gas hydrate exploitation, such as diameter, velocity, volume fraction and particle…
The emulsification characteristic of crude oil-water system is greatly related to the physical properties of the crude oil. The emulsified water volume fraction under flowing conditions was used to characterize the emulsification characteristic of…
The present work is an experimental investigation that aims at studying the effects of different fuel additives on the soot volume fraction and temperature in a well-defined vertical laminar diffusion flame configuration, and these additives include…
An in-situ spiral separator was designed to sand removal and purification NGH to solve the problems of equipment wear, reservoir collapse and so on, based on the solid fluidization method and combined with the physical properties of mixed slurry.…
One of the important challenges in city gate gas pressure reduction stations is the heating of the natural gas prior to pressure reduction. Regarding the low efficiency of the common water bath heaters in these stations another type of double…
This paper examines the hydrogen production from the combustion of rich natural gas-air mixtures in a porous medium composed of aleatoric algae biomass particles and alumina spheres. Combustion wave temperature, propagation rate and products (H2, CO,…
Focusing on the state of explosion overpressure field, a number of pressure transducers were installed in the axial and radial directions in the large-scale space. The explosion overpressure fields at different volume fractions of natural gas were…
The aim of this study is to investigate the detailed soot formation characteristics of crude Jatropha oil (CJO) and heavy fuel oil (HFO) blends (lower heating value (LHV) basis: 50%/50%) in a 550 kW-class combustion test furnace equipped with an…
GT-Power based closed-loop model of a liquefied natural gas(LNG)engine with a reformer was built to explore the effect of reformed exhaust gas recirculation(REGR) rate and n(the volume fraction ratio of CH4 to O2)on performances of the engine and the…
The coulometric method of measuring humidity and oxygen on the basis of an electrolytic cell with a film of phosphorus oxide for continuous analysis of natural gas in pipelines of its transportation is considered. On the basis of the method the…
The spiral separator is an important tool for desanding in natural gas hydrate production, and the change of hydrate reservoir parameters has a great impact on spiral separator behavior. Mastering the influence law is helpful to improve the…
CO2 removal is imperative in the sweetening of natural gas. In this work, a hybrid method combining membrane separation and chemical absorption is proposed and applied to test its performances in CH4 refinement and CO2 separation from natural gas.…
Soot study is a fundamental issue for the combustion process of hydrocarbon fuels. Losses in combustion efficiency, health risks, environmental loosestrife, and damage in furnaces may appear as a result of soot existence. This present paper aims at…
The purpose of the study is to accurately predict the erosion wear rate and service life of screen pipe protective sleeve in natural gas mining. Firstly, according to the reservoir and completion characteristics, the flow channel model of the screen…
The effect of hydrogen on the mechanical properties of X70 welded joint was investigated in simulated natural gas/hydrogen mixtures at 10MPa. The hydrogen volume fraction was set as 0, 5.0 and 10.0vol.%. The slow strain rate tensile test showed that…
Presented here is experimental and theoretical work on phase transitions and separation time scales for CO2-crude oil mixtures with CO2 content ranging from pure to 79 mol %. The experimental work was performed using the wheel flow loop located at…
An emulsion may be classified as a colloidal system depending on the scale analyzed. State parameters (e.g.temperature, volume fraction and osmotic pressure) determine whether the system is regarded as in a liquid-like, liquid/solid-like or…
The present work aims to provide theoretical support to prevent LPG explosion accidents and reduce its hazardous effect. The explosion of LPG-air mixtures (4.0 % – 9.0 % in volume) under N2 and CO2 dilution (0.0%–30.0% in volume) was experimentally…
In this study, the soot formation behavior of hydro-processed renewable jet and petroleum jet fuels (Jet-A1, and JP-5) was investigated using a laminar counter-flow diffusion flame. Laser-induced incandescence was utilized to measure the soot volume…
The creation of oil emulsions due to mechanical strength and natural surfactants during production is undesirable. The challenges associated with transporting and refining oil have led researchers to probe into practical demulsification methods. An…
Emulsification behaviors of crude oil-water system has significant effects on flow pattern and pressure drop of crude oil-water two phase flow. The degree of emulsification, which is greatly affected by shearing intensity, water volume fraction and…
This paper proposes a microwave non-destructive testing (NDT) method to detect and estimate the volume fraction of fresh or saline water in natural gas pipelines. The gas pipe is modelled as a waveguide that is filled with gas and different…
The viscoelastic characteristics of unstable heavy crude-oil-water dispersed mixtures are investigated to improve pipeline transportation. The effects of temperature, dispersed phase volume fraction, and droplet size distribution are considered on…
The rheological characteristics of unstable heavy crude oil-water dispersed mixtures were investigated to improve pipeline transportation. The viscosity of heavy crude oil is 5439 mPa s, and density is 955 kg/m3 at 30 °C. A series of factors,…
The boil-off gas (BOG) produced from liquefied natural gas (LNG) mixtures in cryogenic storage tanks must be predicted reliably as a function of tank shape, heat ingress, thermal stratification, pressure, and liquid volume fraction. However, current…
Focusing on the state of explosion overpressure field, a number of pressure transducers were installed in the axial and radial directions in the large-scale space. The explosion overpressure fields at different volume fractions of natural gas were…
The supercritical water fluidized bed (SCWFB) is a recently introduced reactor for biomass gasification that does not release pollutants. Four groups of Geldart B-type quartz sands with different particle sizes were fluidized at a system pressure of…
The boil-off gas (BOG) produced from liquefied natural gas (LNG) mixtures in cryogenic storage tanks must be predicted reliably as a function of tank shape, heat ingress, thermal stratification, pressure, and liquid volume fraction. However, current…
The rheological characteristics of unstable heavy crude oil-water dispersed mixtures were investigated to improve pipeline transportation. The viscosity of heavy crude oil is 5439 mPa s, and density is 955 kg/m3 at 30 °C. A series of factors,…
The viscoelastic characteristics of unstable heavy crude-oil-water dispersed mixtures are investigated to improve pipeline transportation. The effects of temperature, dispersed phase volume fraction, and droplet size distribution are considered on…
The problem of wastewater pollution with oil and oil products is currently highly acute. The paper presents a numerical simulation of the separation process of a water-oil emulsion in an element of a separation device with inserts of a porous medium.…