Question #b53c9

1 Answer
May 13, 2017

Answer:

See below.

Explanation:

Various industrial processes produce gases that contain #"CO"_2# and #"H"_2"S"#.

In amine gas treating, these gases are passed through aqueous solutions of amines to remove the #"CO"_2# and #"H"_2"S"#.

The term lean amine refers to the amines used in these reactions.

Once the lean amine has absorbed all the sour gas constituents, it becomes rich amine, which can be collected in an absorber unit during the treating process.

Amine system

The reactions are

#underbrace("RNH"_2)_color(red)("lean amine") + "CO"_2 → underbrace("R" stackrelcolor(blue)("+")("N")"H"_2"COO"^"-")_color(red)("rich amine")#

#"RNH"_2 + "H"_2"S" → underbrace("R" stackrelcolor(blue)("+")("N")"H"_3color(white)(l)"SH"^"-")_color(red)("rich amine")#