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In distillation columns, why are trays more widely used than packings for vapour-liquid contact? What are the advantages of using trays over packings?
 
Answers
02/06/2018 A: Sridhar Balakrishnan, Bharat Oman Refineries Limited , laksrid@yahoo.com
Advantages of tray over packings , they are cost efficient , can handle higher liquid flow rates, better at handling any source of fouling and trays allows upward moving vapors and downward moving liquids to have good contact.
01/06/2018 A: Sudhakara Babu Marpudi, Oman Refineries and Petroleum Industries Company, m_sudhakarababu@yahoo.com
in Simple terms, Trays are used where finer separation of products are the requirement. One can produce finished products (pretreatment level products) from tray towers. Packings are used where bulk separation (intermediate products that need further processing to produce finished products) are the requirement.
31/05/2018 A: Ralph Ragsdale, Ragsdale Refining Courses, ralph.ragsdale@att.net
Trays were more reliable in predicting fractionation capability. It is easier to inspect a trayed column, often requiring dumping packing for inspection.