Sub-Product

Hydrotreated atmospheric residuum is a heavy petroleum fraction produced through high-pressure catalytic hydrotreating of atmospheric residue. The process achieves:

Key Features

• Up to 95% sulfur removal through hydrodesulfurization reactions
• Reduction of up to 65% in residual carbon content
• Partial removal of metals, nitrogen, and other contaminants
• Conversion of some heavy molecules to lighter products through mild hydrocracking

Process Details

The hydrotreating is conducted in fixed-bed reactors using:

• Catalysts containing combinations of Cobalt, Nickel, Molybdenum, or Tungsten supported on alumina
• Guard reactor beds to remove metals and protect main catalysts
• Severe operating conditions requiring high hydrogen partial pressures
• Multiple reactor stages for different treatment objectives

Applications

The hydrotreated product serves as:

• Feedstock for FCC/RFCC units
• Feed for hydrocracking or delayed coking units
• Component in low sulfur fuel oil production