Fluid Catalytic Cracking (FCC) Back

Action Alteration
Method Catalytic
Purpose Upgrade gasoline (yield, octane)
Feedstock Gas oil, coke, distillate

Middle distillate
Petrochemical feedstock

Product(s) goes to

Gas plant
Residue treatment

In fluid-bed catalytic cracking, SR gas oils are put in contact with a catalyst at elevated temperatures and pressures to promote cracking to smaller, more valuable compounds.

FCC consists of a catalyst section and a fractionating section that work together as an integrated processing unit. The FCC process mixes the heated hydrocarbon with hot, finely-powdered catalyst. Cracking takes place in the catalyst section in which the mixture of catalyst and hydrocarbons pass through the reactor. As the mixture travels up the reactor, the hydrocarbon is cracked. This cracking continues until the oil vapors are separated from the catalyst. The product is then separated into fractions in a column.

Spent catalyst is mixed with hot air to burn off most of the coke deposits on the catalyst. Fresh catalyst is used in further cracking processes; worn out catalyst is removed.

DMA 35 Ex Petrol

The DMA 35 portable density meter measures the density, SG and °API of samples on-site within seconds. The intrinsically safe instrument (ATEX-marking II 2 G Ex ib IIC T4) has a special housing, resistant to petroleum samples. It is therefore perfectly suitable for measuring petroleum samples in hazardous areas. The integrated RFID interface enables quick sample identification (e.g. tank number) before measurement. Measured results can be stored and printed or exported to a PC wirelessly via IrDA later on. The instrument fully complies with the ASTM D7777 standard.

0.001 g/cm3

Repeatability s. d.:
0.0005 g/cm3

Measuring range:
0 g/cm3 to 3 g/cm3

Minimum sample volume:
2 mL

Benefits of DMA 35 Ex Petrol at Fluid Catalytic Cracking (FCC)

The DMA 35 Ex Petrol portable density meter measures the API gravity, API SG or API density (calculated from true density) of the different liquid fractions (product group B: refined products) directly at the sampling location for quick identification.  It automatically displays the measured value, already compensated to your reference temperature of choice.