Question

Which of the following statement(s) is/are CORRECT about the chemicals used for the processing of sour crude oil and natural gas?

• A. Amine solutions cannot be regenerated after removal of H\(_2\)S from natural gas.
• B. Amine solutions in liquid form absorb H\(_2\)S from natural gas.
• C. Glycols become corrosive in the presence of oxygen.
• D. Iron sponges cannot be used for H\(_2\)S removal.

Hint:

When dealing with natural gas treatment, remember that different chemicals like amines and glycols are used to remove impurities such as H\(_2\)S and water. Understanding the behavior and limitations of these chemicals is crucial for efficient operation.

Answer 1

The Correct Option is B, C

- Option (A) is incorrect because amine solutions can be regenerated after removal of H\(_2\)S through a process involving heating, where the H\(_2\)S is released, and the amine solution can be reused.
- Option (B) is correct because amine solutions, especially in liquid form, are commonly used in natural gas treatment to absorb H\(_2\)S, a toxic impurity that needs to be removed.
- Option (C) is also correct because glycols, used in natural gas dehydration, can become corrosive when exposed to oxygen, leading to degradation and potential damage to equipment.
- Option (D) is incorrect because iron sponges are indeed used for H\(_2\)S removal in some systems, particularly in smaller-scale applications. Thus, the correct answers are options (B) and (C).