Cracking and continuous processes in petrochemistry
The most important petrochemical process is steam cracking, in which ethane, LPG, naphtha, Hydrowax, gasoil, and additional carbons are cracked in the presence of steam at extremely short retention times and temperatures of +800 °C … +850 °C (+1,472 °F … +1,562 °F).
The gaseous phase of steam cracker products contains ethylene, propylene, the C4-fraction (butane, iso-butene, and 1,3-butadiene), as well as isoprene. The liquid phase consists of aromatic compounds (benzene, toluene, xylene), and is also used as pyrolysis gasoline.
These are basic chemical raw materials for numerous plastics, and other end products. Very large production volumes are processed in suitably-sized plants. Absorption, adsorption, rectification and distillation are part of the steam cracking procedure.
The decisive criterion here is maximum reliability and availability of the plant components involved. The system components must be able to run for long periods without interruptions. Steam cracking is dominated by extremely high temperatures and pressures. During the subsequent processes hazardous, aggressive and corrosive media must be controlled securely.
“Cool” sealing technology for “hot” areas
EagleBurgmann supplies perfectly designed dual mechanical seals for sealing different hydrogen sulfide (H2S) concentrations in pumped media and high-end metal expansion joints for cracking facilities.
Well-engineered and robust Cartex, SH, H75 and HR mechanical seals have proven to be the best for the frequently applied process pumps. We fit compressors with DGS seals, and employ Espey carbon floating ring seals in centrifuges. For pipe and duct systems we supply resistant gaskets, sealing sets for flanges and valves, as well as expansion joints.