⚙️ Green Petroleum Coke & Calcined Petroleum Coke: Industrial Carbon Powerhouses
Green Petroleum Coke (GPC) and its processed counterpart, Calcined Petroleum Coke (CPC), are essential carbon-based materials derived from petroleum refining. While GPC is the raw, unprocessed form, CPC is the result of a high-temperature calcination process that significantly enhances its purity and performance for industrial use.
🛢️ What is Green Petroleum Coke (GPC)?
GPC is a carbon-rich solid residue obtained during the delayed coking process of heavy petroleum residues like vacuum resid or decant oil. The term “green” refers to its unprocessed state, not to its environmental attributes.
Key Characteristics:
High carbon content (~75–85%)
Contains volatile matter, moisture, sulfur, and metals (e.g., vanadium, nickel)
Sponge-like structure with a porous surface
Used primarily as a fuel or raw material for further processing
🔥 What is Calcined Petroleum Coke (CPC)?
CPC is produced by heating GPC in rotary kilns or vertical shaft kilns at temperatures between 1,200°C and 1,400°C to remove volatile materials. This process improves the carbon purity, crystallinity, and electrical conductivity of the coke.
Key Properties:
Fixed carbon content of >97%
Low volatile matter and moisture
Increased density and thermal stability
Excellent electrical conductivity