نتایج جستجو برای: vacuum distillation

تعداد نتایج: 54964  

Journal: :IOP Conference Series: Materials Science and Engineering 2019

Journal: :International journal of toxicology 2014
Walden E Dalbey Richard H McKee Katy Olsavsky Goyak Robert W Biles Jay Murray Russell White

Lubricating oil base stocks (LOBs) are substances used in the manufacture of finished lubricants and greases. They are produced from residue remaining after atmospheric distillation of crude oil that is subsequently fractionated by vacuum distillation and additional refining steps. Initial LOB streams that have been produced by vacuum distillation but not further refined may contain polycyclic ...

Journal: :Separations 2023

The flexibility of membrane contactors (MCs) is highlighted for a reverse osmosis (RO) desalination plant. MCs are applied as pre-treatment the oxygen removal and pH reduction seawater, also post-treatment increase RO permeate brine volume. A decrease seawater down to neutral values, needed when coagulation used in line RO, together with an up 7.58, matching target produced water, can be obtain...

2004
David Greene

Vacuum distillation may be used to enhance the separation of hydrocarbons because of the improvement in relative volatility at the lower pressure. Vacuum may also be employed to break azeotropes by using two columns in series that operate at different pressures. And, it may be required to reduce the boiling point of the bottom composition so conventional heat-transfer fluids can be used for hea...

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