Discussion
A deodoriser is being run at atmospheric pressure to save on vacuum equipment.
What is the likely consequence?
Answer: C
Correct answer: The temperature needed will damage the oil
Deodorisation strips compounds that are only sparingly volatile. Without the vacuum their boiling points are far higher, so the oil would have to be taken well above the 240 to 260 degrees Celsius it can tolerate.
At those temperatures the triglycerides decompose, the oil darkens badly and trans isomers are formed - the oil is damaged rather than refined, and the volatiles are removed less completely, not more. The vacuum is not an economy measure; it is the condition that makes stripping possible at a survivable temperature.
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development