Abstract: The present application relates to a distillation device and a distillation method, and according to the distillation device of the present application, it is possible to minimize the energy losses that occur in the refining process of the raw material containing the monomer and the solvent used in the polymerization process of the thermoplastic elastomer and to reduce the installation cost of the distillation device more than the case of refinement with two distillation columns, and thus the process economics may be improved.

Abstract: The present application relates to a distillation device. When a feedstock containing acetone and methanol is separated using a distillation device according to the present application, a methanol removal distillation column may be located at a position for easily separating methanol to solve a problem due to accumulation of methanol in the process and to lower the methanol content in the acetone product, and thus the lifetime of catalysts can be extended, and moreover, methanol can be removed with good efficiency from a flow of the lower part of the distillation column obtaining the final acetone product by using only the conventional phase separator and one methanol removal distillation column further installed, so that the acetone product obtained from the upper part of the distillation column obtaining the acetone product can be obtained in high purity and the operating cost and the equipment cost of equipments can be greatly reduced.

Abstract: Disclosed is an electronic device. The electronic device includes a first calculation unit performing one neural network operation of a plurality of neural network operations, a second calculation unit including a hardware accelerator performing a specified neural network operation, and an interface controller connected between the first calculation unit and the second calculation unit. Moreover, various embodiment found through the disclosure are possible.

Abstract: The present application relates to an apparatus for purifying cumene comprising: a first dividing wall type distillation column which takes in a stream from an alkylation reactor and comprises a first benzene output line and a benzene/cumene/polyisopropylbenzene stream output line; a second dividing wall type distillation column which takes in a stream from a transalkylation reactor and a benzene/cumene/polyisopropylbenzene stream, includes a transalkylation reactor stream input line, a benzene/cumene/polyisopropylbenzene stream input line, a second benzene output line, and a first polyisopropylbenzene stream output line; and a third distillation column which takes in a polyisopropylbenzene stream, includes a second polyisopropylbenzene output line, and a heavies output line.

Abstract: The present application relates to a distillation device. The distillation device of the present application can minimize energy loss occurring in a purification process of the olefin monomer, the solvent, and the raw material including, for example, 1-octene, iso-octene, and n-hexane, used in a polymerization process of the polyolefin elastomer, and can increase economic efficiency by isolating a high-purity product.

Abstract: A system for producing phenol and bisphenol A comprising: a first production unit for producing phenol comprising a decomposition reaction unit and a purification unit; a second production unit for producing bisphenol A comprising a reaction unit and a concentration unit; and a removal unit for removing methanol and acetone during the production of phenol and bisphenol A. The removal unit includes a removal column comprising an overhead purge part, a bottom recirculation part and a supply part. The supply part comprises a purification unit discharge part to supply methanol, acetone, and water discharged from the purification unit to the removal column and a concentration unit discharge part to supply phenol, acetone, and water discharged from the concentration unit to the removal column, and is provided to the midsection of the removal column.

Abstract: The present invention relates to an apparatus and a method for preparing bisphenol A, and provides an apparatus and a method for preparing bisphenol A that can increase the energy efficiency of the entire process by utilizing an internal heat source.

Abstract: The present invention relates to a solvent separation apparatus and a solvent separation method, and the solvent separation apparatus and the solvent separation method according to the present application can reduce the used amount of cooling water and the used amount of steam, in a process of separating a polymer and a solvent.

Abstract: Provided are an ester composition preparation system, including an integrated reactor, a gas-liquid separation column, a purification unit, an alcohol storage tank, and a mixed alcohol separation column, which is an efficient, economical, and simplified ester composition preparation system, and an ester composition preparation method using the same. The ester composition preparation system is a simplified system which can reduce facility space, drastically remove reaction equipment, and reduce transfer time through the introduction of the integrated reactor in which the reaction preparing an ester compound and the reaction preparing an ester composition are carried out in one space, the mixed alcohol separation column and the gas-liquid separation column.

Abstract: The present application relates to an apparatus and method for purifying cumene. The apparatus and method for purifying cumene according to the present application can reduce the amount of energy consumption which occurs during purification processes and can provide an apparatus and method capable of efficiently purifying cumene.

Abstract: Provided are a divided wall distillation column and a separating method. According to the divided wall distillation column and the separating method, when a mixture having three or more components is separated, a material to be separated, for example, 2-ethyl hexyl acrylate can be separated with high purity, and energy reduction in a separation and refinement process of 2-ethyl hexyl acrylate can be promoted.

Abstract: A system for producing phenol and bisphenol A comprising: a first production unit for producing phenol comprising a decomposition reaction unit and a purification unit; a second production unit for producing bisphenol A comprising a reaction unit and a concentration unit; and a removal unit for removing methanol and acetone during the production of phenol and bisphenol A. The removal unit includes a removal column comprising an overhead purge part, a bottom recirculation part and a supply part. The supply part comprises a purification unit discharge part to supply methanol, acetone, and water discharged from the purification unit to the removal column and a concentration unit discharge part to supply phenol, acetone, and water discharged from the concentration unit to the removal column, and is provided to the midsection of the removal column.

Abstract: The present application relates to an apparatus and method for purifying cumene. The apparatus and method for purifying cumene according to the present application can reduce the amount of energy consumption which occurs during purification processes and can provide an apparatus and method capable of efficiently purifying cumene.

Abstract: The present application relates to a heat recovery apparatus and method. According to the heat recovery apparatus and method, low-level heat sources at a temperature less than 100° C. discharged from industrial settings or various chemical processes, for example, a petrochemicals manufacturing process are not wasted but used to generate steam and the generated steam is used for various processes to reduce an amount of consumed high-temperature steam that is an external heat source to be used for a reactor or distillation column, thereby not only maximizing energy reduction efficiency but also autonomously producing power consumed by a compressor. Also, an evaporation phenomenon of a part of a refrigerant flow which passes through the compressor may be reduced, thereby recovering heat with excellent efficiency.

Abstract: Provided is a method for preparing ethylene with improved energy efficiency which can reduce energy due to direct heat exchange between processes.

Abstract: Provided is a method for preparing ethylene with improved energy efficiency which can reduce energy due to direct heat exchange between processes.

Abstract: An ophthalmic device includes an optic including an optic axis and a closed-loop haptic structure coupled to the optic via a frame surrounding the optic, the closed-loop haptic structure including a closed loop extending from first and second attachment points to the frame. The closed loop includes a first hinge and a second hinge. The first hinge has a first section having a first component extending in a first angular direction, a second section having a second component extending in a second angular direction opposite to the first angular direction, and a first connecting section between the first section and the second section. The second hinge has a third section having a third component extending in the second angular direction, a fourth section having a fourth component extending in the first angular direction, the fourth section being connected to the second section to form the closed loop.

Abstract: The present application relates to an apparatus and method for purifying cumene. The apparatus and method for purifying cumene according to the present application can reduce the amount of energy consumption which occurs during purification processes and can provide an apparatus and method capable of efficiently purifying cumene.

Abstract: An imprint apparatus including a stage supporting a stamp master on which a master pattern for forming a stamping pattern on a flexible substrate is formed, or a substrate on which a pattern corresponding to the stamping pattern is formed by contact with the stamping pattern; a roll-to-roll mover to move the flexible substrate along a path adjacent to the stage; a clamp including a front clamp that secures a first portion of the flexible substrate, and a rear clamp that secures a second portion of the flexible substrate spaced apart from the first portion; a pressure roller to press the flexible substrate so that the flexible substrate secured by the clamp is brought into contact with the substrate or the stamp master; and a clamp driving controller to drive the clamp to adjust tension between the first portion and the second portion.

Abstract: The present invention relates to a method for purifying phenol, which comprises: supplying a feed comprising phenol, acetone, hydroxyacetone and water to a distillation column at 60° C. to 95° C.; separating the feed into a first fraction, which comprises the acetone, and separates to the upper part of the distillation column and a second fraction, which comprises the phenol, and separates to the lower part of the distillation column; and recovering the first fraction and the second fraction, respectively.