Written on February 1, 2013 at 6:30 am, by Clyde Young and Keith Hodges
What is Mentoring? In this Tip of the Month, we explore how process safety competency can be enhanced through mentoring programs. This TOTM is the paper that was developed by JMC Instructor/Consultants Clyde Young and Keith Hodges presentation at the Center for Chemical Process Safety (CCPS) 8th Global Conference on Process Safety in April, 2012. Continue Reading
Written on October 1, 2008 at 8:25 pm, by Dr. Mahmood Moshfeghian
Gas density estimates are of fundamental importance for process simulation, equipment design, and process safety engineering. In the previous Tip of the Month (TOTM), two shortcut methods for predicting sour and acid gas density were evaluated. We showed that Katz correlation gives accurate results for lean sweet gases and it is the most accurate inContinue Reading
Written on September 1, 2008 at 8:10 pm, by Dr. Mahmood Moshfeghian
Gas density is needed for process simulation and equipment design. For example, accurate predictions of gas density are needed for calculation of pressure drop in piping/pipeline and for vessel sizing. Accurate gas density is also essential for custody transfer metering. Gas density, , is calculated by: (1) Where: &Gas density, kg/m3 (lbm/ft3) Absolute temperature, KContinue Reading
Written on December 1, 2007 at 10:51 pm, by Dr. Mahmood Moshfeghian
In the last Tips of the Month, we discussed the phase behavior of water-sweet natural gas and water-sour natural gas mixtures. In this tip, we will demonstrate the acid gas–water phase behavior. The water content of a gas depends on the system temperature, pressure and composition of the gas. The phase equilibria in the system H2SContinue Reading
Written on November 1, 2007 at 10:38 pm, by Dr. Mahmood Moshfeghian
In the last Tip of the Month, we discussed the phase behavior of water-sweet natural gas mixtures. In this tip, we will demonstrate the water-sour natural gas phase behavior. In a future tip, we will address water content of acid gases. Water is produced with oil and gas. A question that comes to mind is: “WhyContinue Reading
Written on May 1, 2006 at 4:59 pm, by Dr. Mahmood Moshfeghian
In this Tip of the Month, we will study two alternatives for removal of H2S and CO2 from natural gas. The process objective is to produce a sweet gas with less than 4 PPM H2S and the near total removal of CO2 due to the presence of a downstream nitrogen rejection unit (NRU). Each alternativeContinue Reading
