The present disclosure relates to a stripping device and a stripping method, and more particularly, to a stripping device including: a distillation column of which at least a part or the entirety of a lower portion is perforated; a stripping vessel integrally connected to the lower portion of the distillation column; and one or more spray nozzles provided at an upper portion of the stripping vessel, and a stripping method using the same.

The present disclosure relates to a stripping device and a stripping method, and more particularly, to a stripping device including: a distillation column of which at least a part or the entirety of a lower portion is perforated; a stripping vessel integrally connected to the lower portion of the distillation column; and one or more spray nozzles provided at an upper portion of the stripping vessel, and a stripping method using the same.

The invention relates to a field of polymer preparation and discloses a method for promoting phase-separation of polymer solution. The phase-separation method of polymer solution of the invention comprises: at least a portion of the polymer solution is subjected to a heat treatment under flowing so that the polymer solution is divided into a clear liquid phase and a concentrated liquid phase, wherein the Reynolds number of the polymer solution flowing is 0.2-30. By performing the heat treatment under specific Reynolds number conditions, the invention permits to reduce the temperature of phase-separation of solution, reduce the time of phase-separation of solution, and significantly reduce the material consumption and energy consumption of the entire process, compared with the existing technology that only performs phase-separation through heat treatment.

The invention relates to a field of polymer preparation and discloses a method for promoting phase-separation of polymer solution. The phase-separation method of polymer solution of the invention comprises: at least a portion of the polymer solution is subjected to a heat treatment under flowing so that the polymer solution is divided into a clear liquid phase and a concentrated liquid phase, wherein the Reynolds number of the polymer solution flowing is 0.2-30. By performing the heat treatment under specific Reynolds number conditions, the invention permits to reduce the temperature of phase-separation of solution, reduce the time of phase-separation of solution, and significantly reduce the material consumption and energy consumption of the entire process, compared with the existing technology that only performs phase-separation through heat treatment.

The present invention relates to a process for treating an effluent obtained from an oligomerization step in a vaporization step. In particular, the oligomerization step is a step for dimerization of ethylene to 1-butene with a nickel-based catalytic system.

Provided is a brush forming composition used to cause phase separation of a block copolymer of a layer containing the block copolymer formed on a substrate, the brush forming composition containing: a brush polymer, an organic base, and a solvent.

Provided is a brush forming composition used to cause phase separation of a block copolymer of a layer containing the block copolymer formed on a substrate, the brush forming composition containing: a brush polymer, an organic base, and a solvent.

The present invention provides polymer particles capable of being dissolved in a dissolving medium without generating an unmixed lump and capable of uniformly improving the viscosity of a composition, and a thickener using the polymer particles. The polymer particles of the present invention have a number average particle diameter of 1 to 50 m and a coefficient of variation in a number-based particle size distribution of 30% or more, wherein where the weight average molecular weight of the whole polymer particles is defined as A, the weight average molecular weight of small particles having a cumulative number percentage of 5% or less counted from the smaller diameter side in the number-based particle size distribution of the polymer particles is defined as B, and the weight average molecular weight of large particles having a particle diameter of 5 times or more the number average particle diameter of the polymer particles is defined as C, polymer particles satisfy the following formulas (1) and (2).
0.90(B/A)<1.0Formula (1)
(C/B)<1.25Formula (2)

The present invention provides polymer particles capable of being dissolved in a dissolving medium without generating an unmixed lump and capable of uniformly improving the viscosity of a composition, and a thickener using the polymer particles. The polymer particles of the present invention have a number average particle diameter of 1 to 50 m and a coefficient of variation in a number-based particle size distribution of 30% or more, wherein where the weight average molecular weight of the whole polymer particles is defined as A, the weight average molecular weight of small particles having a cumulative number percentage of 5% or less counted from the smaller diameter side in the number-based particle size distribution of the polymer particles is defined as B, and the weight average molecular weight of large particles having a particle diameter of 5 times or more the number average particle diameter of the polymer particles is defined as C, polymer particles satisfy the following formulas (1) and (2).
0.90(B/A)<1.0Formula (1)
(C/B)<1.25Formula (2)