| Execution Time |
from: 03/2008
to: 10/2009 |
| Execution Stage |
Basic Design
Engineering, Procurement
|
| Client | SHELL Moerdijk |
Design and procurement of a filtration unit for the quench oil loop. The filtration unit removes solid coke particles without any necessity for shutdown of the ethylene plant (EP), with no negative impact to the environment and to health and safety. The principle of the process is the continuous removal of solid particles in hydrocyclones with subsequent filtration and washing procedure to obtain a dry solid phase. The process is designed and owned by Intecha.
The inlet stream is divided into two streams by hydrocyclones, the main stream of clean quench oil, which goes to steam evaporators, and a considerably smaller stream with concentrated solid coke particles, which goes to subsequent separation of coke from quench oil. The separation is carried out inside special coke process filters periodically. Filtered coke is dried and after washing procedure is sent as a dry solid material to incineration.
Installation of the coke removal unit increases EP efficiency and significantly saves operational costs, increases operational life of the equipment and it also reduces contamination of the environment. Incorporation of this process enables ethylene units to prolong operational cycles between shutdowns.
