Category Archives: Uncategorized

Non-Refluxed Split-Feed Condensate Stabilizer Column – Part 4

Written on January 12, 2017 at 9:48 am, by

This tip is the follow up of December 2016 tip of the month (TOTM) [2] which investigated the benefits of having a water-draw and its optimum location in a non-refluxed condensate stabilizer column. That tip simulated the performance of an operating condensate stabilizer column equipped with a side water-draw tray to remove liquid water andContinue Reading

Water-Draw in a Non-Refluxed Condensate Stabilizer Column – Part 3

Written on December 5, 2016 at 3:12 pm, by

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

Charts and Correlation for Estimating Methanol Removal in TEG Gas Dehydration Process

Written on November 11, 2016 at 10:25 am, by

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

Estimating Methanol Removal in the Gas Sweeting Process

Written on October 4, 2016 at 3:56 pm, by

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

Estimating Methanol Removal in the NGL Sweetening Process

Written on September 2, 2016 at 11:19 am, by

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

Determining Traces of Methanol in the NGL Sweetening Process

Written on August 1, 2016 at 10:47 am, by

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

Determining Traces of Methanol in the Gas Sweetening Process

Written on July 15, 2016 at 8:28 am, by

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

Projecting the Performance of Adsorption Dehydration Process

Written on June 6, 2016 at 4:13 pm, by

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

Benefits of Having Side Water-Draw in a Condensate Stabilizer Column – Part 2

Written on May 2, 2016 at 10:59 am, by

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

What is the Impact of Light Hydrocarbons on the Natural Gas Hydrate Formation Conditions?

Written on March 1, 2016 at 12:56 pm, by

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