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Figure 10  Sequences of distillation columns to separate products in the manufac-
            ture of ethylene and propylene.


            13.5  NGL PRODUCTS AND THEIR STABILIZATION
            Listed are some commercial finished products that are obtained by
            fractionation of NGL stream and sold in a gas plant:
                 1. Ethane product
                 2. Propane product
                 3. Butanes product
                 4. Pentanes and heavier (natural gasoline) product.






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