Application On NS Composite Co-Current Flow Trays of Tilt Strip in Ethylene Oxide Distillation

NS composite co-current flow trays of tilt strip (NS CTTS) is a new kind of stereo trays with larger throughput and high efficiency. This technology is an improvement of the New VST technology according to its flow structure, combining the co-current injection structure and structured packing effectively. Not only the structures, operation principle and characters were introduced in the passage, but also its application on renovation of ethylene oxide refining tower in Maoming petro-chemical company and Dongfang petro-chemical company was described. After 7-year industrial examination, it’s found that just renovating Ethylene Oxide Distillation with NS CCTS trays, Maoming petro-chemical company has decreased circumfluence ratio by 3 times, improved throughput by 5.5 times, indeed 7 times; made the EO product as the high quality product; saved the energy by 69% and handed in tax more than before 1.5 million a year .Its industrial application fully confirmed that with NS SCTTS, the production and separation efficiency can be improved significantly. Obviously, it is the best choice for industrial renovation and energy thrift, additionally, the potential applications of this technology has a splendid future.