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.
Successful Commissioning of Dual DWC Deisohexanizer Column to Produce Pharma Grade Hexane
