During natural gas processing and gathering and transportation, water dew point and hydrocarbon dew point as two of control parameters in natural gas because of safety, economy and efficiency etc. In the field chilled mirror manual visual method…
Catalytic fast pyrolysis (CFP) is an advanced controlled process of biomass thermal decomposition designed to produce high volumes of ready-to-use transportation biofuels or to provide improved quality bio-oil for subsequent refining or upgrading.…
It is very important to predict the condensation of liquid hydrocarbons when transporting natural gas with pipelines in industry. Using a high-pressure transparent sapphire cell, the hydrocarbon dew points of eight synthetic natural gas mixtures were…
Abstract: The paper reports the results of the fractional extraction of petroleumasphaltenes using a toluene/acetone mixture. This method was shown to beeffective in extracting polyaromatic structures with various properties and inpredicting a number…
The reduction of pour point of waxy crude oil by pyrolysis under high pressure N2 or supercritical methanol (SCMeOH) environment was experimentally studied at the temperatures ranging from 370 to 400 C. During the pyrolysis under N2 environment, only…
The existence of back pressure will cause shock wave in the Laval nozzle of the supersonic separator, which will lead to the condensed droplets to evaporate and reduce the separation efficiency of the separator. It is of great significance to…
Condensation of steam vapor is an important mode of energy removal from the reactor containment. The presence of noncondensable gas complicates the process and makes it difficult to model. MELCOR, one of the more widely used system codes for…
A diffusion layer model was developed for condensation heat transfer of a vapor with noncondensable gases. The model predicts the heat transfer coefficient for free convection condensation over a vertical surface in the presence of air with…
The paper focuses on an operational gas expander beingused in a natural gas plant for over 10 years, whose recent realtime monitoring shows that the impeller back-side gap pressureis excessively low. To ensure the safe operation, an insight intothe…
Coil-wound heat exchangers (CWHEs) have been widely used in natural gas liquefaction plants nowadays. But few studies on the condensation heat transfer and frictional pressure drop of mixed hydrocarbon refrigerants inside the tubes of CWHEs have been…
The flow modes of a vapor-drop mixture in a regasifier-heater of liquefied natural gas are numerically studied on the basis of the model that takes into account polydispersity, power, and thermal interaction of phases, processes of breakup,…
A new method to removal carbon dioxide from natural gas was proposed in this paper. Combining the nucleation and growth model, the droplet surface tension of carbon dioxide, models of methanecarbon dioxide mixture gas in the supersonic nozzle was…
The NHR-200 reactor in China adopts the noncondensable gas self-stabilizing control and the noncondensable gas used for pressure stabilization control can weaken steam condensation heat transfer in the integrated steam-gas pressurizer. A condensation…
The separation technology of carbon dioxide (CO2) is a key step to achieve high efficient carbon capture and storage targets. In the present study, we propose a new concept to remove CO2 from the offshore natural gas industry, which utilises the…
Pressure energy recovery is one of the main advantages of a supersonic separator. However, the pressure energy recovery process can cause droplet evaporation in the divergent section, which will reduce the liquefaction efficiency of the nozzle. This…
Exact knowledge of natural gas composition is essential in custody transfer to determine the energy content of the delivery. However, for liquefied natural gas (LNG), a reliable composition determination is difficult. Here, we describe the design of…
The results of a study of thermal fractionation in columns having vortex contact stages and stages made of plates are presented. The dependencies of the efficiency of adiabatic and thermal fractionation columns on the equilibrium curve slope for…
Abstract: The condensation and fractionation unit design affects the quantity and quality of the liquid products derived from the waste plastics pyrolysis. The oil products, if meet the standards requirements, can be used as an alternative fuel.…
Laval nozzle is the critical part of supersonic separator to provide refrigeration environment. Due to the back pressure at the outlet of supersonic separator in dehydration process, the condensation characteristics of water vapor and the…
A new method was proposed for hydrogen sulfide removal from natural gas through the utilization of supersonic flow in a Laval nozzle. For this purpose, a mathematical model was established for the supersonic non-equilibrium condensation flow of the…
The present study evaluates the potential of clean natural gas dehydration using nonequilibrium condensations in high-pressure supersonic flows. A computational fluid dynamics model is developed to study the formation of massive nanodroplets due to…
A new method to removal carbon dioxide from natural gas was proposed in this paper. Combining the nucleation and growth model, the droplet surface tension of carbon dioxide, models of methanecarbon dioxide mixture gas in the supersonic nozzle was…
During natural gas processing and gathering and transportation, water dew point and hydrocarbon dew point as two of control parameters in natural gas because of safety, economy and efficiency etc. In the field chilled mirror manual visual method…
The study is devoted to various structures of the temperature control loop in the outlet pipe of the cooling unit. The control loop structures are built on the basis of the well-known mathematical model of the condenser. The results of the…
The separation technology of carbon dioxide (CO2) is a key step to achieve high efficient carbon capture and storage targets. In the present study, we propose a new concept to remove CO2 from the offshore natural gas industry, which utilises the…
A study was conducted to investigate the void fraction and pressure drop characteristics of methane/propane under different mass flux, saturation pressure and heat flux in a helically coiled tube, and the effects of distribution ratio…
Pressure energy recovery is one of the main advantages of a supersonic separator. However, the pressure energy recovery process can cause droplet evaporation in the divergent section, which will reduce the liquefaction efficiency of the nozzle. This…
The present study evaluates the potential of clean natural gas dehydration using nonequilibrium condensations in high-pressure supersonic flows. A computational fluid dynamics model is developed to study the formation of massive nanodroplets due to…
The visbreaking of Canadian oil sands bitumen (OSB) and Tahe atmospheric residue (AR) with high metal and asphaltene content was studied to deepen the understanding of the utilization of ultra-inferior heavy oil. The total content of nickel and…