The present invention relates to an apparatus and a method for preparation of quantum dots capable of continuously preparing quantum dots having uniform luminous properties using Taylor vortices. The apparatus for preparing quantum dots according to the present invention includes a first Couette-Taylor reactor for forming a core, core precursor sources each connected to the first Couette-Taylor reactor to supply a core precursor, a second Couette-Taylor reactor for forming a shell, and a shell precursor source connected to the second Couette-Taylor reactor to supply a shell precursor. In this case, the first and second Couette-Taylor reactors are connected to each other so that a core generated in the first Couette-Taylor reactor is supplied to the second Couette-Taylor reactor, and the apparatus further includes a temperature control means for keeping the internal temperature of each of the first and second Couette-Taylor reactors constant.

The present invention relates to a device for carrying out continuous-flow chemical reactions under pressure or high pressure using a cascade of perfectly stirred Gas-Liquid-Solid reactors, and to the use of these devices for the implementation of such reactions. The device comprises a cascade of interconnected autoclave reactors. The reactors of the cascade are of different volumes and are provided with means allowing them to be controlled individually in a completely independent manner. The cascade of reactors comprises at least two reactors of different volumes, increasing or decreasing in the fluid flow direction.

In a method for the precipitation of particles of a metal carbonate material comprising nickel and manganese in an atomic ratio of 0?Ni:Mn?1:3, aqueous solutions comprising sulfates or nitrates of nickel and manganese are mixed with aqueous solutions of carbonates or mixtures of carbonates and hydroxides of sodium or potassium in a stirred reactor at pH>7.5 without the use of a chelating agent. Thereby agglomerated particles are formed without any subsequent process steps, in particular no subsequent process at temperatures higher than the precipitation temperature.

A chemical reaction method having steps of preparing a chemical reaction apparatus by partitioning an inside of a horizontal flow reactor into multiple chambers by multiple partition plates, and flowing a liquid horizontally with an unfilled space being provided thereabove, generating microwaves with a microwave generator, and transmiting the microwaves, with at least one waveguide, to the unfilled space in the reactor. Also forming a top portion of the partition plates act as a weir, inclining the reactor such that, in each of the chambers, a weir height on the inlet side is higher than a weir height on the outlet side by at least an overflow depth at the partition plate on the outlet side, flowing content over each of the partition plates inside the reactor, and configuring the weir heights of the partition plates in the reactor are the same in a state where the reactor is not inclined.

The present invention relates to a continuous olefin polymerization process comprising polymerization of at least one olefin monomer in at least two serial vapor phase polymerization reactors containing an agitated bed of forming polymer particles, comprising a polymer particles transfer step wherein forming polymer particles are transferred from an upstream reactor to a downstream reactor comprising in a repeating sequence the steps of discharging at least one charge of polymer powder and reactive gases from the upstream reactor into a gas-solid separator, collecting the polymer powder separated in the gas-solid separator in a pressure transfer chamber; increasing the pressure in the pressure transfer chamber with a pressurizing gas to a pressure that is higher than the operating pressure of the downstream reactor, and discharging the polymer powder from the pressure transfer chamber into the downstream reactor, wherein said process reduces the carry-over of reactive gases from the upstream reactor to the downstream reactor. The present invention further relates to a system suitable for the present continuous vapor phase olefin polymerization process. The present invention further relates to the use of the present process and system for producing heterophasic polypropylene copolymers.

The present invention provides continuous flow processes for the preparation of the compound of Formula (1), an intermediate in the preparation of Vilazodone.

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Apparatuses, devices and methods for creating a high level disinfectant, comprising peracetic acid for disinfecting medical devices are disclosed. The peracetic acid solution is made from a reaction of tetraacetylethylenecUamine powder, sodium percarbonate, and citric acid moHohydrate in water.

The present invention relates to an industrial process for the preparation of (5S,10S)-10-benzyl-16-methyl-11,14,18-trioxo-15,17,19-trioxa-2,7,8-trithia-12-azahenicosan-5-aminium (E)-3-carboxyacrylate salt of following formula (I): wherein X is fumarate. This process comprises the following successive key steps: a kinetic resolution, formation of disulfide compound, peptide coupling, and anion exchange reaction to obtain the desired product of formula (I). ##STR00001##

The present invention relates to a multistage stirred reactor, comprising a multiplicity of mutually adjacent reaction chambers and stirring elements for mixing the contents of at least one of the reaction chambers, wherein, between adjacent reaction chambers, there is in each case provided at least one opening that can be closed by means of closure means, such that in the open state there is a fluidic connection between the adjacent reaction chambers and in the closed state the adjacent reaction chambers are separated from one another. At least one of the closure means (300, 310, 320) is connected to an actuation rod (500, 510, 520) that is guided out of the stirred reactor. The actuation rod (500, 510, 520) can be moved back and forth between at least one first position and a second position, by rotation and/or displacement, wherein in the first position closure means (300, 310, 320) that are connected to the actuation rod (500, 510, 520) effect an open state of the opening assigned to them and in the second position closure means (300, 310, 320) that are connected to the actuation rod (500, 510, 520) effect a closed state of the opening assigned to them.

A continuous chemical reactor may include a primary reaction unit and at least one secondary reaction unit. The primary reaction unit has a stirring device and a first temperature regulating device, and a feed inlet provided at an upper portion thereof. The secondary reaction unit is sleeved outside the primary reaction unit, and a reaction chamber is formed therebetween. By adding reaction materials to the primary reaction unit via the feed inlet and adjusting the temperature of the reaction materials by the first temperature regulating device, the reacted materials enter the reaction chamber, and the heat generated in the reaction chamber can be used to adjust the temperature of the materials in the primary reaction unit to more effectively use the heat, and the product after reaction can be discharged from a discharge hole at the lower end of the secondary reaction unit, thereby achieving continuous production.