Fossil Fuels

Hybrid Membrane Absorption Process for Post Combustion CO2 Capture

Mar 23, 2010
S. James Zhou
Gas Technology Institute (GTI) and PoroGen Corporation are jointly developing a novel hybrid membrane – absorption process for pre- and post-combustion CO2 capture (Carbo-Lock™ process). The novel Carbo-Lock™ process combines advantageous features of both absorption and membrane processes to...

Fouling by Asphaltenes After and During Conversion

Mar 23, 2010
Irv Wiehe
During resid conversion processes, such as visbreaking or hydroconversion, more saturated pendant groups are cracked off asphaltenes, making them less soluble. Meanwhile, the more saturated volatile liquids formed during the conversion are often nonsolvents for asphaltenes. As a result, these...

Possible Solutions for Reducing NOx and SOx Emissions from Large Cargo Ships

Mar 23, 2010
Reggie Zhan
In an attempt to curb air pollution from the shipping industry, the U.S. Environmental Protection Agency (EPA) proposed two new sets of standards in July 2009, which requires ships that have compression-ignition engines with a capacity of 30 liters or more per cylinder in U.S. waters to cut...

Stripper Configurations for CO2 Capture by Aqueous Amines

Mar 23, 2010
David H. Van Wagener
A monumental task for improving the feasibility of carbon capture from the flue gas of coal-fired power plants is reducing the total energy cost. A generic absorption/stripping process using an aqueous amine solvent would reduce the net power production of a coal-fired power plant by roughly 30%,...

Full Potential Conversion of Vacuum Resids

Mar 23, 2010
Irv Wiehe
Present vacuum resid conversion processes, either coking or hydroconversion, are far from achieving their maximum conversion. With the remaining petroleum resources, on average, having a greater fraction of the vacuum resid fraction, it is imperative that new resid conversion processes or schemes...

Fuel Performance Parameters for Marine Engines

Mar 23, 2010
The regulations for sulfur reduction in marine fuels are impacting the whole spectrum beginning from the production of the fuel in the refineries to the end use in Marine diesel engines. To start with, from 1/1/2010, the European Union regulations call for use of fuel with a maximum of 0.1% sulfur...

Integrated Refinery Cracker, the New Paradigm

Mar 23, 2010
Osman Aboul-Nasr
The new trends in crackers are higher capacity and heavier feedstock. This makes the integration between refineries and crackers significantly more beneficial. The importance of integration becomes a more paramount issue. Since several new refineries and cracker / derivatives complexes are...

Uncertainties in Modeling LNG Vapor Dispersion with CFD Codes

Mar 23, 2010
Ruifeng Qi
Computational fluid dynamics (CFD) models have been widely proposed and developed to predict LNG vapor dispersion behavior and to determine safe separation distances around LNG production storage and transportation facilities. This is largely due to the ability of CFD codes to describe fully the...

Design Feature of Large Full Containment LNG Storage Tank

Mar 23, 2010
Se-Jin Jeon
A number of notable features are addressed that may be encountered in designing a large aboveground full containment LNG storage tank. The size and thickness of the inner tank, which is made of 9% Ni, is closely related to the specifications of design codes. The recent revisions of the relevant...

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