Unit+3

Unit 3 Gas Treatment __**Unit 3 Reading Assignment **__ Please read Chapter 4-5, pgs 51-71 in the textbook (Plant Processing of Natural Gas) to familiarize yourself with gas treatment. This unit will be centered on the Amine Sweetening Process and the Sulfer Recovery process.

Reasons for Removing CO2 and H2S
Carbon dioxide, hydrogen sulfide, and other contaminants are often found in natural gas streams. CO2 when combined with water creates carbonic acid which is corrosive. CO2 also reduces the BTU value of gas and in concentrations of more that 2% or 3 % the gas is unmarketable. H2S is an extremely toxic gas that is also tremendously corrosive to equipment. Amine sweetening processes remove these contaminants so that the gas is marketable and suitable for transportation.

Amine Sweetening: Our Discussion will be focused on your diagram of a typical Amine Sweetening System.

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Amine Gas Sweetening Solutions
Amine gas sweetening is a proven technology that removes H2S and CO2 from natural gas and liquid hydrocarbon streams through absorption and chemical reaction. Each of the amines offers distinct advantages to specific treating problems.
 * MEA (Monoethanolamine)
 * Used in low pressure natural gas treatment applications requiring stringent outlet gas specifications


 * MDEA (Methyldiethanolamine)
 * Has a higher affinity for H2S than CO2 which allows some CO2 “slip” while retaining H2S removal capabilities.


 * DEA (Diethanolamine)
 * Used in medium to high pressure treating
 * does not require reclaiming, as do MEA and DGA systems.


 * FORMULATED (SPECIALTY) SOLVENTS
 * A variety of blended or specialty solvents are available on the market.

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Sulfur is an extremely useful element. Its largest application is for the manufacture of fertilizers with other principal users including rubber industries, cosmetics, and pharmaceuticals. Sulfur is present in many raw industrial gases and in natural gas in the form of hydrogen sulfide.

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[|H2S Safety Video]

[|Confined Space Video]

[|While we are talking about Safety...]

*__**Assignment**__- please type a paper describing how the Amine Unit and Sulfur Recovery Unit work in conjunction with each other for the removal of H2S/Sulfur (sour) from the inlet gas. Your description should include a detailed summary of what components are involved and what their responsibilities are within the Sulfur Removal Process. 1 page MINIMUM Times Roman Font, size 12, standard margins and headings. This is assignment is worth 20 points.