CB&I is the exclusive worldwide licensor of BP’s paraxylene technology, a unique process employing single stage crystallization for paraxylene (pX) recovery. This innovative configuration, paired with high feed impurity tolerance and low overall unit fuel consumption, makes the CB&I/BP pX crystallization technology the most energy-efficient paraxylene recovery method. The CB&I/BP paraxylene process is highly-reliable, low-cost and is capable of accepting a wide-range of feed compositions. Paraxylene yield is further increased via isomerization over a non-noble metal catalyst. Optimized fractionation reduces reboiler duty, leading to lower energy requirement as well as lower emissions.
By producing paraxylene at purities of 99.8%+ via a single stage of crystallization with double reslurry technology, the CB&I/BP paraxylene process has surpassed earlier crystallization technologies by exhibiting the lowest energy consumption and lowest capital cost.