The pylorisis section contained the pylorisis furnace
In steam cracking, the carbon-to-carbon bonds were broken when the heat was applied. The cracking rate was determined and depended on the temperature factor and catalytic activity. Alkanes were broken down into smaller alkanes and alkenes. The process of steam cracking involved 3 subsections and they were pylorisis unit, fractionation and compression units and finally the separation sector.
The pylorisis section contained the pylorisis furnace which produced steam and cracked gas. The energy requirement in this unit was high with approximately 61% of the total energy input with variables experienced with temperature change. In some cases, pyrolisis would operate under extremely elevated temperatures of between 7500Cto 9000C or even more. In this case, more ethylene was produced. This kind of pylorisis was referred to as destructive distillation. In some cases, pylorisis would operate under a reduced temperature of about 5000C commonly known as delayed cracking. This aspect would produce needle coke due to delayed heat and low temperature.
In the fractionation and compression sector, the energy requirement would amount to almost 65% of the total energy input, slightly higher than in the pyloric unit. In this unit, the pressure build-up was experienced due to compression and fractionation resulting in partitioning and segmentation. In the separation unit, a lower energy input was experienced about 25% of the total.
