Fossil Fuels

Plasma Assisted De-NOx In Diesel Engine

Mar 14, 2011
Dae Hoon Lee
Plasma assisted De-NOx systems in mobile application are introduced. In general, de-NOx process requires reductant for reducing catalyst. NH3(Urea) fueling, post injection of diesel fuel are representative of method for supplying reductant. Here, using synthesis gas by on board reforming as...

Study on Energy Consumption for Natural Gas Liquefaction

Mar 14, 2011
Qiang Xu
The main purpose of this work is to optimize natural gas liquefaction process by reducing energy consumption. At first, a rigorous simulation of natural gas liquefaction is conducted. Based on the simulation results, the refrigerants and natural gas thermodynamic states along with whole process are...

The Destruction of Dioxins In Fly Ash by Using Gliding Arc In Tornado

Mar 14, 2011
Liang Yu
The characteristic of gliding arc in tornado was investigated under different experimental conditions and the destruction of PCDD/Fs (polychlorinated dibenzo-p-dioxins/polychlorinated dibenzofurans) in medical waste incinerator fly ash by using a dc gliding arc in tornado reactor was studied in the...

Exploitation of Low-Grade Heat In Site Utility Systems

Mar 14, 2011
Ankur Kapil
The site utility system provides the heating, cooling load along with power production for the processes on the total site. Low-grade heat is available in large amount across the process industry from temperatures of 30 o C to 250 o C as gases (e.g. flue gas) and/or liquids (e.g. cooling water)...

Synthesis Gas Cleanup with Nonthermal Plasma

Mar 14, 2011
Maoqi Feng
Plasma processes are very useful in industry because plasma has the unique characteristic of producing active species in large numbers of energetic species than conventional chemical processes. Nonthermal plasma (NTP), such as corona or glow discharge plasmas, is widely used for generating such...

Novel Additives to Improve Resid Quality

Mar 14, 2011
Parag Shah
With an increasing focus on resid upgrade and bottom of the barrel conversion over the years due to economic advantages, refiners are increasingly processing heavy crudes that yield higher residue content. These crudes are also higher in salt, metal and sulfur content. Often in these cases, there...

Chemical Insights Indicate Process Opportunities for Residue Processing

Mar 14, 2011
Murray R. Gray
The vacuum residue fraction of petroleum is one of the most complex mixtures of compounds known, one which continues to defy comprehensive analysis. The combination of complexity, diversity, and aggregation of the asphaltenes has enormous implications for upgrading reactions and phase behaviour...

In-Detail Chemistry of Hydrocarbon Partial Oxidation Reaction by Plasma

Mar 14, 2011
Dae Hoon Lee
In the plasma reforming of hydrocarbon fuels, especially in a partial oxidation process, characteristic parameters of the reaction can be sorted as plasma parameter and reactant condition parameter. Plasma parameter or electric power and voltage-current characteristic determines density of active...

Resin Wafer Electrodeionization for Flue Gas Carbon Dioxide Capture

Mar 14, 2011
Rebecca L. Stiles
Energy efficient capture of CO 2 from coal-fired power plants is one of the grand challenges for the U.S. both to end dependence on imported energy and to reduce greenhouse gas emissions. Nalco Company and Argonne National Laboratory received a Department of Energy ARPA-E award to develop Resin...

Fundamentals of Alarm Management

Mar 13, 2011
Peter G. Herena
When the information era began thirty years ago, the focus for the refinery control specialist was placing as much data as possible into the hands of engineers and operators. The philosophy remained prevalent though the volume of transferred data leaped by orders of magnitude every decade...

Designing for an LNG Loading Arm Failure

Mar 24, 2010
Dennis Taylor
Over the last few decades, LNG has vaulted onto the world stage as a viable candidate for future energy needs. Scores of studies have been done to illustrate the potential consequences of an accidental release of LNG. Some excellent studies have been reported, but uncertainties still exist because...

The Effect of Turbulence on the Evaporation of LNG Spills on Water

Mar 24, 2010
An important element of the overall risk of near-shore and offshore LNG operations is the behavior of spills on water: how the spill first interacts with the water at the point of entry, how the liquid pool first forms and spreads and how the emanating vapors disperse. Several models exist for...

Cooldown of Large Pipes During the Commissioning Phase of Cryogenic Facilities

Mar 23, 2010
Harri Kytomaa
Cryogenic facilities such as LNG receiving terminals operate at temperatures as low as -260F. During day to day operations, the temperature in the pipes of the facility is relatively uniform, leading to low material stresses in the pipes. However, during exceptional operations, such as the initial...

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