What is decant oil?

Decanted oil is the heaviest product from a cat cracker. It is also called slurry oil, clarified oil, and bottoms and FCC residue. Depending on the refinery location and market availability, DO is typically blended into No. 6 fuel, sold as a carbon black feedstock (CBFS) or even recycled to extinction.

What is the relation between API gravity with density of oil?

API gravity of crude oil grades A crude oil will typically have an API between 15 and 45 degrees. Higher API indicates a lighter (lower density) crude. Lower API indicates a heavier (more dense) crude.

Why API gravity is used instead of density?

API gravity is thus an inverse measure of a petroleum liquid’s density relative to that of water (also known as specific gravity). It is used to compare densities of petroleum liquids. For example, if one petroleum liquid is less dense than another, it has a greater API gravity.

What is FCC slurry oil?

Also known as: cat slurry, cat bottoms, decant oil. FCC slurry is a highly aromatic resid stream produced by the FCC. Typical uses for FCC slurry are: Fuel oil blending – Cat slurry can be blended into residual fuel oil with minimal amounts of cutter stock to achieve the required viscosity.

What is BMCI oil?

“BMCI” (Bureau of Mines Co-relation Index) effectively measures the degree yield of Carbon Black. The higher the number, the better the yield of Carbon Black. Sulphur content in CBFS reduces the effect of BMCI value.

What is crude oil density?

Crude oil has historically been referred to as conventional crude, which is generally found deep underground by drilling. This crude typically has a density range of around 800 kg/m3 to 900 kg/m3 (80 per cent to 90 per cent that of water).

How is oil density measured?

ρ=m/V where ρ=density, m=mass and V=volume. The density of most oils will range between 700 and 950 kilograms per cubic meter (kg/m3). By definition, water has a density of 1,000 kg/m3.

What is the difference between FCC and RFCC?

RFCC is an extension of conventional FCC technology, offering better selectivity to produce higher amounts of gasoline and less gas than hydro and thermal processes.

What is the API gravity of heavy oil in water?

The API gravity is often compared with water such that, the relative density of heavy oil at 60 °F is taken as 1.0, the same value as for pure water. The behavior of the crude products in water is judged based on this parameter. If the API gravity of a liquid is greater than 10° API, the liquid will float on water.

What are the properties of decanted oil?

Decanted oil properties vary greatly, depending on the feedstock quality and operating conditions. Selling the decanted oil as carbon black feedstock often yields higher pricing than getting rid of it as cutter stock.

Is there an API for specific gravity and density?

API Gravity to Specific Gravity and Density Chart: Degree API. Specific Gravity. Density (kg/m3). 14 0,973 972,509 15 0,966 965,870 16 0,959 959,322 17 0,953 952,862

What is the relative density of heavy oil at 60 °F?

The API gravity is often compared with water such that, the relative density of heavy oil at 60 °F is taken as 1.0, the same value as for pure water. The behavior of the crude products in water is judged based on this parameter.