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Polymerization Back

Action Polymerize
Method Catalytic
Purpose Unite two or more olefins
Feedstock Olefins from cracking process
Product(s)

High-octane naphtha
Petrochemical feedstocks
LPG

Product(s) goes to

Gasoline blending
Petrochemical
Storage

Polymerization is a process in which two or more unsaturated organic molecules (olefins) are combined to produce heavier molecules. It converts gaseous olefins, such as ethylene, propylene and butylene (coming from thermal and fluid cracking units) into heavier compounds with higher octane number, including naphtha and petrochemical feedstocks. The olefin feedstock is pretreated to remove undesirable compounds (like sulfur) and then passed over a catalyst (usually a solid catalyst or liquid phosphoric acid), at which point a polymeric reaction happens. This reaction is exothermic (=releases heat) and therefore requires the use of cooling water and cold feedstock in the reactor to control the temperature. Acid in the liquid is neutralized by caustic wash and the liquid products are sent to a fractionator.

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.

Accuracy:
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 Polymerization

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 final products and byproducts resulting from polymerization (product grup 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.