Written on December 5, 2016 at 3:12 pm, by admin
This tip is the follow up of the previous tips (April and May 2016) [1-2], which investigated the benefits of having a water-draw and its optimum location in a condensate stabilizer column [see chapter 16 of reference 3]. It will simulate the performance of an operating condensate stabilizer column equipped with side water-draw tray toContinue Reading
Written on November 11, 2016 at 10:25 am, by admin
The TEG (triethylene glycol) gas dehydration process removes a considerable amount of methanol from a wet gas stream. if the methanol content of the wet gas is high, the dry gas may still retain high methanol content and can cause operational troubles in the downstream processes. Continuing the October 2010 tip of the monthContinue Reading
Written on October 4, 2016 at 3:56 pm, by admin
Charts and Correlations for Estimating Methanol Removal in the Gas Sweetening Process The gas-sweetening process by amines like methyldiethanolamine (MDEA) removes a considerable amount of methanol from a sour gas stream. Moreover, if the methanol content of the sour gas is high, the sweet gas may still retain high methanol content and can causeContinue Reading
Written on September 2, 2016 at 11:19 am, by admin
Similar to the gas-sweetening process, the methyldiethanolamine (MDEA) liquid-sweetening process removes a considerable amount of methanol from a sour NGL (Natural Gas Liquid) stream. Moreover, if the methanol content of the sour NGL is high, the sweetened NGL may still retain high methanol content and can cause operational troubles in the downstream processes. Provisions ofContinue Reading
Written on August 1, 2016 at 10:47 am, by admin
Many materials may be added to water to depress both the hydrate and freezing temperatures. For many practical reasons, a thermodynamic hydrate inhibitor such as methanol or one of the glycols is injected, usually monoethylene glycol (MEG or EG). Solubility loss of MEG in the gas phase is negligible and loss to the liquid hydrocarbonContinue Reading
Written on July 15, 2016 at 8:28 am, by admin
The best way to prevent hydrate formation (and corrosion) is to keep pipelines, tubing and equipment free of liquid water. There are occasions, right or wrong, when the decision is made to operate a line or process containing liquid water. If this decision is made, and the process temperature is below the hydrate point, inhibitionContinue Reading
Written on June 6, 2016 at 4:13 pm, by admin
The May 2015 tip of the month (TOTM) [1] presented a method which allows the users to estimate the decline of their adsorbent based on only one performance test run (PTR) for molecular sieve dehydrators using low pressure regeneration. This permits early formulation of a credible action plan. Site-specific factors will determines an adsorption unit’sContinue Reading
Written on May 2, 2016 at 10:59 am, by admin
This tip is the follow up to the April 2016 Tip of the Month (TOTM) which investigated the benefits of having a water-draw in a condensate stabilizer column. It will use a commercial simulation software to simulate the performance of an operating stabilizer. In order to take into account the non-ideality of water, the tip will performContinue Reading
Written on March 1, 2016 at 12:56 pm, by Dr. Mahmood Moshfeghian
The December 2012 [1] and January 2016 [2] Tips of the Month (TOTM) discussed the hydrate phase behavior of natural gas mixtures containing high content hydrogen sulfide, carbon dioxide, or nitrogen. Specifically, it showed nitrogen and carbon dioxide inhibit the hydrate formation slightly while hydrogen sulfide enhances hydrate formation considerably. This tip will extend theContinue Reading
Written on January 1, 2014 at 8:00 am, by Clyde Young
A pillar of Risk Based Process Safety (RBPS) is Learn from Experience. The work we do and the processes we use to analyze our work provide significant learning opportunities to enhance process safety competency. This is a derivative of Kolb’s experiential learning cycle [1], but many times we fail to take advantage of the learningContinue Reading
