VRV features a highly sophisticated crystallizer vessel for the production of paraxylene, in accordance with the CB&I Lummus and GTC Technology licenses.

It is a large size vessel (dia: 3,600 mm, lenght: 21,500 mm, weight: 20 ton) thin wall, in full stainless steel with extremely tight inside tolerances in order to accommodate a scraper mixing element and a refrigerating circulation system on the exterior surface.