Press Release

Houston, TX: DWC Innovations LLC announces the successful start-up, commissioning of Dual dividing-wall Deisohexanizer (DIH) Column in the Isomerization Unit of Chennai Petroleum Corporation Limited (CPCL) refinery at Manali, Chennai, India.

The project involved conversion of existing Deisohexanizer Column into a four-cut dual dividing-wall-column (DDWC) producing Light Isomerate, Heavy Isomerate, Recycle stream and Pharma / Food Grade Hexane (PGH/FGH) as a new product. The project also involved a grassroots Benzene Saturation Unit – also designed and licensed by DWC Innovations.

The design of revamped DWC included multiple feed and product scenarios, including operating the DIH column as before – with no hexane product drawn from the column. The revamp was achieved with increase in Isomerization unit throughput, and with no impact to product RON.

This DIH column revamp is world’s first application of Dual dividing-wall-column technology in an ISOM unit.

Houston, TX: DWC Innovations announces the successful start-up of its DAS Splitter Dual Dividing-Wall-Column (DDWC) at BPCL’s Mumbai refinery.

This is a grassroot Dividing wall column project done at BPCL, Mumbai as part of revamp of their Lube Oil Base Stock (LOBS) unit.

The DAS (Dearomatized Solvent) Splitter DDWC is capable of producing different grades of lubricants: D40, D80, D110, D130 & MBL which would typically be produced in a sequence of three columns. The wide operational flexibility makes the DWC Prime handle a variety of feed and product scenarios justifying its benefits of lower equipment count, lesser plot space along with savings in OPEX and CAPEX

This column is also the world’s first commercial application of dividing wall column with multiple walls.

Previously, DWC innovations had successfully commissioned dividing wall column revamp of a series of naphtha splitting columns producing feed for isomerization and CCR units at BPCL, Mumbai.