Question

Heavy oil recovered from reservoirs can be represented by $C_xH_{1.5x}$. Suitable processes to reduce the density of heavy oil are
 

• A. Carbon Rejection
• B. Pyrolysis
• C. Hydrogenation
• D. Filtration

Hint:

Carbon Rejection helps reduce the density of heavy oil by removing excess carbon, typically through cracking or distillation.

Answer 1

The Correct Option is A, B, C

Heavy oil is often referred to by the formula $C_xH_{1.5x}$, indicating its higher carbon content and associated high viscosity. To reduce the density and make it easier to transport, several processes can be applied:
- Carbon Rejection: This process involves removing excess carbon, which reduces the density of the heavy oil. It typically involves techniques like distillation or catalytic cracking to break down heavier hydrocarbons and reduce their molecular weight.
- Pyrolysis: This involves thermal cracking, which can break down complex hydrocarbons but does not directly reduce density.
- Hydrogenation: This involves adding hydrogen to the oil, which can reduce sulfur content and improve the quality of oil, but it does not necessarily reduce the density significantly.
- Filtration: This is a mechanical process that removes solid contaminants but does not affect the oil's density.
Thus, Carbon Rejection is the most suitable process to reduce the density of heavy oil.
Final Answer: Carbon Rejection