An alkanolamine gas treatment unit system that may comprise an absorber column, a regenerator column, and a once-through natural circulation vertical thermosyphon reboiler comprising a reboiler tube and a shell. The reboiler may be a steam driven one having a process side and a shell side, wherein the process side is inside the reboiler tube, the process side of the reboiler and the regenerator column are in fluid communication with one another, an inner surface of the reboiler tube, on the process side, has a surface roughness of 0.06 .Math.m or greater, the shell side of the reboiler is in fluid communication to a steam source, and the regenerator column and the absorber column are in fluid communication with one another. An absorbent regenerator system that may comprise the regenerator column and the once-through natural circulation vertical thermosyphon reboiler.

An alkanolamine gas treatment unit system that may comprise an absorber column, a regenerator column, and a once-through natural circulation vertical thermosyphon reboiler comprising a reboiler tube and a shell. The reboiler may be a steam driven one having a process side and a shell side, wherein the process side is inside the reboiler tube, the process side of the reboiler and the regenerator column are in fluid communication with one another, an inner surface of the reboiler tube, on the process side, has a surface roughness of 0.06 .Math.m or greater, the shell side of the reboiler is in fluid communication to a steam source, and the regenerator column and the absorber column are in fluid communication with one another. An absorbent regenerator system that may comprise the regenerator column and the once-through natural circulation vertical thermosyphon reboiler.

The present disclosure relates to an apparatus for removing residual monomers and, more specifically, to an apparatus for removing residual monomers, the apparatus being capable of preventing, during the removal of volatile materials by supplying a gas to a flowing distillation material, the formation of dead zones in which the distillation material does not flow or the flow rate thereof decreases. The apparatus for removing residual monomers, of the present disclosure, comprises: a main body capable of supplying a gas to a distillation material accommodated therein; distillation material supply part which is provided at the upper part of the main body and through which the distillation material is injected; a gas inflow part which is provided at the lower part of the main body and through which the gas is injected; a discharge part which is provided at the upper part of the main body, and which discharges volatile materials separated, by means of the gas, from the distillation material; a recovery part, which is provided at the lower part of the main body and recovers the distillation material from which the volatile materials have been removed; a plurality of trays which are provided inside the main body, and each of which has through-holes and a spiral channel; and a downcomer which is provided between the trays, and which is a moving passage through which the distillation material moves downward from the upper part of the main body.

The present disclosure relates to an apparatus for removing residual monomers and, more specifically, to an apparatus for removing residual monomers, the apparatus being capable of preventing, during the removal of volatile materials by supplying a gas to a flowing distillation material, the formation of dead zones in which the distillation material does not flow or the flow rate thereof decreases. The apparatus for removing residual monomers, of the present disclosure, comprises: a main body capable of supplying a gas to a distillation material accommodated therein; distillation material supply part which is provided at the upper part of the main body and through which the distillation material is injected; a gas inflow part which is provided at the lower part of the main body and through which the gas is injected; a discharge part which is provided at the upper part of the main body, and which discharges volatile materials separated, by means of the gas, from the distillation material; a recovery part, which is provided at the lower part of the main body and recovers the distillation material from which the volatile materials have been removed; a plurality of trays which are provided inside the main body, and each of which has through-holes and a spiral channel; and a downcomer which is provided between the trays, and which is a moving passage through which the distillation material moves downward from the upper part of the main body.

Processes and reaction systems for olefin metathesis by reactive distillation, utilizing liquid phase metathesis of reactant olefins in the presence of a homogeneous metathesis catalyst system, where the light metathesis product is produced and leaves the liquid phase as vapor phase and the heavy metathesis product is produced in liquid phase. Separation can be performed on the light metathesis product and a distinct other separation can be performed on the heavy metathesis product.

Processes and reaction systems for olefin metathesis by reactive distillation, utilizing liquid phase metathesis of reactant olefins in the presence of a homogeneous metathesis catalyst system, where the light metathesis product is produced and leaves the liquid phase as vapor phase and the heavy metathesis product is produced in liquid phase. Separation can be performed on the light metathesis product and a distinct other separation can be performed on the heavy metathesis product.

Methods, systems, and techniques for desalinating a saltwater using a humidifier unit. The humidifier unit has a housing, which has a carrier gas inlet and a saltwater inlet. The humidifier unit also includes a packing, within the housing, having a surface with a critical surface tension of less than 25 mN/m according to the Zisman method. The packing is arranged to facilitate a saltwater that enters the housing through the saltwater inlet and a carrier gas that enters the housing through the carrier gas inlet to contact each other. The contact facilitates evaporation of the saltwater, which produces salt solids on at least a surface of the packing, a humidified gas and a concentrated brine.

Methods and systems for converting ammonium waste streams into certifiably Organic ammonium salts having a variety of uses in greenhouse gas-reducing activities are herein described. The resulting ammonium salt compositions can be used to enhance crop yield.

Methods and systems for converting ammonium waste streams into certifiably Organic ammonium salts having a variety of uses in greenhouse gas-reducing activities are herein described. The resulting ammonium salt compositions can be used to enhance crop yield.

A plant for the absorption of individual components, such as pollutants or recyclable materials, in gases, in which an absorption solution is brought into contact with the gas in an absorption chamber, where the absorption solution is fed into the absorption chamber through spray nozzles and the gas can be fed into the absorption chamber from below through a vertical inlet duct, where the inlet duct is covered by a roof structure. The roof structure is made up of a large number of lamellae placed one on top of one another and with spaces in between.