The present application relates to a selective distillation apparatus and a distillation method, which provides a distillation apparatus capable of switching between a serial connection mode and a parallel connection mode on the situation, thereby enabling selective operation of high-efficiency operation and high-capacity operation.

Provided is a method of separating and purifying a mixture of components having small difference in boiling point, and the method may maximize an energy collecting amount and collect a product to be desired in high purity and high yield.

The present invention relates to a solvent recovery apparatus and a solvent recovery method, and the solvent recovery apparatus and method according to the present application can reduce the used amount of steam in a synthetic rubber production process, and can reduce the used amount of energy by recovering the waste heat discarded through a condenser.

Method and apparatus for processing pyrolysis oil from vehicular tires and effecting a steam distillation for separation of the pyrolysis oil to create a lighter fraction which may be subjected to fractional distillation and a heavy fraction which is usable as a fuel oil.

Provided is a method for purifying a waste solvent by removing carbon dioxide contained in a waste solvent derived from supercritical waste liquid generated after supercritical drying by a decompression process, and removing ammonia by a multi-stage distillation process to obtain a solvent of high purity, which can be reused in producing silica aerogel or a silica aerogel blanket.

Systems and methods are provided for improving process control of separation systems that include one or more dividing walls within a single column. It has been discovered that improved process control can be achieved by controlling the dividing wall columns based on energy balance instead of mass balance. The energy balancing can be performed in part based on controlling temperature at a plurality of locations on the feed side within a first divided portion of the column. Using energy balancing based on temperature control at a plurality of locations on the feed side can facilitate maintaining the operation of the dividing wall columns within a single region of phase space that can be suitably approximated by linear models. This can allow conventional process controllers to manage the manipulated and controlled variables. In addition to controlling the temperature at a plurality of locations on the feed side, a plurality of other characteristics can be used as manipulated or controlled variables. Optionally, a multivariable controller can be used to provide further improved control of the column.

Method and apparatus for processing pyrolysis oil from vehicular tires and effecting a steam distillation for separation of the pyrolysis oil to create a lighter fraction which may be subjected to fractional distillation and a heavy fraction which is usable as a fuel oil.

Method and apparatus for processing pyrolysis oil from vehicular tires and effecting a steam distillation for separation of the pyrolysis oil to create a lighter fraction which may be subjected to fractional distillation and a heavy fraction which is usable as a fuel oil.

Systems and methods for improved column operation in offshore environments by using a co-current contactor system in floating production, storage and offloading (FPSO) systems.

The subject process enhances catalytic activity for demetallization and desulfurization of a residue feed stream by splitting a recycle hydrogen stream and feeding each of the split hydrogen streams to the first and second stages of demetallation and desulfurization, respectively, with interstage separation. The recycle hydrogen stream may first undergo scrubbing to remove acid gases and compression before recycle. The recycle hydrogen stream is taken from a first hot vapor stream from the first hydrotreating unit and a second hot vapor stream from the second hydrotreating unit.