Carbon Black Feed Stock (CBFS) is a type of petroleum-based feedstock used in the production of carbon black, a reinforcing filler used in various industrial applications.

Definition:

CBFS is a residual fuel oil, derived from crude oil refining, used as a feedstock for carbon black production.

Characteristics:

1. Density: 0.95-1.04 g/cm³

2. Viscosity: 100-500 mm²/s (at 50°C)

3. Sulphur content: 1-3.5% (max)

4. Flash point: 66-93°C

5. Cetane number: 20-40

6. Aromatic content: High

Uses:

1. Carbon black production (tires, rubber, plastics, coatings)

2. Industrial applications (ink, paint, batteries)

3. Aerospace and defense (rocket propellants)

Production process:

CBFS is thermally cracked to produce carbon black and other by-products.

Types of CBFS:

1. High-Aromatic CBFS (HACBFS)

2. Low-Aromatic CBFS (LACBFS)

3. Ultra-Low Sulphur CBFS (ULSCBFS)

Specifications:

CBFS meets various international standards, including:

1. ASTM D396 (USA)

2. EN 589 (Europe)

3. IS 1593 (India)

Comparison with other feedstocks:

1. Coal Tar: higher aromatic content

2. Petroleum Coke: higher sulphur content

3. Natural Gas: cleaner, lower emissions

Environmental impact:

CBFS production and use contribute to:

1. Air pollution (particulate matter, SOx, NOx)

2. Climate change (CO2 emissions)

3. Water pollution (oil spills)

Industry trends:

1. Increasing demand for carbon black in emerging markets

2. Shift towards cleaner, more sustainable feedstocks

3. Advancements in CBFS production technologies