Petroleum Refinery Engineering - Study Mode

[#106] Absolute vapor pressure of petrofuels is found by Reid bomb which is heated in water bath to 100°F. In Reid apparatus, the ratio of the volume of air chamber to that of the liquid fuel chamber is
Correct Answer

(D) 4

[#107] Waxes present in petroleum products
Correct Answer

(C) Crystallise out at low temperature

[#108] Which of the following processes consumes hydrogen?
Correct Answer

(A) Fluid catalytic cracking

[#109] Which is almost absent in crude petroleum?
Correct Answer

(B) Mercaptans

Explanation

Solution: In petroleum refinery engineering, mercaptans are almost absent in crude petroleum (Option B). Mercaptans, also known as thiols, are sulfur-containing organic compounds with the general formula R-SH, where R represents an organic group. While mercaptans can be present in refined petroleum products as contaminants, they are typically absent or present in very low concentrations in crude petroleum. Therefore, the correct option is Option B: Mercaptans .

[#110] Vacuum maintained in the vacuum distillation column in oil refinery is in the range of about __________ mm Hg absolute.
Correct Answer

(B) 30 to 80