Sour Crude refers to crude oil that contains a relatively high amount of sulfur (usually more than 0.5% by weight). This sulfur content makes it “sour,” as opposed to “sweet” crude, which has lower sulfur content. The sulfur compounds present ...
Operator Zone – Oil & Gas Interview Questions Latest Questions
✔ Arsenic, vanadium, and nickel in the feed cause poisoning.✔ Water or oxygen exposure deactivates the catalyst.
Low hydrogen purity can lead to coking, catalyst deactivation, and incomplete desulfurization. To fix this, operators check H₂ supply pressure, recycle gas compressor efficiency, and remove contaminants.
🔹 How to Ensure All Instruments Are OK Before Unit Startup? Before starting up any unit in oil & gas, power plants, or industrial facilities, it is critical to verify that all instruments are functioning properly to ensure safety, efficiency, and ...
Follow Emergency Shutdown Procedures (ESD): 1️⃣ Stop the feed pump. 2️⃣ Close reactor inlet valves. 3️⃣ Maintain nitrogen purging. 4️⃣ Monitor hydrogen venting to prevent pressure buildup.
The FCC (Fluid Catalytic Cracking) unit is one of the most important and widely used processes in petroleum refineries. It is used to convert heavy, high-boiling-point hydrocarbons from crude oil into lighter, more valuable products such as gasoline, diesel, propane, ...
Step-by-step process flow:1️⃣ Feed Preheating – Raw naphtha is heated using heat exchangers.2️⃣ Mixing with Hydrogen – Hydrogen is added to the feed.3️⃣