Abstract:
The invention relates to a process for the production of thermoplastic moulding compounds, in particular for the production of acrylonitrile-butadiene-styrene (ABS), wherein at least a first reagent (11) and a second reagent (12) of the thermoplastic moulding compounds are fed to a loop conduit (29) which comprises a static mixer (36), wherein the reagents (11, 12) are pressed in loops through the loop conduit (29) and passing the static mixer (36), whereby the reagents (11, 12) are dispersed to form a dispersion (15) in the static mixer (36). The invention also relates to a thermoplastic moulding compound that is produced by the inventive process.
Abstract:
Disclosed herein are a method and systems for cumene hydroperoxide cleavage with an improved configuration for online instrumentation. The systems comprise a first fluid loop comprising one or more reactors and a fluid pump and a second fluid loop in fluid communication with the first fluid loop. This second fluid loop comprises an instrument configured to measure a characteristic of a fluid flowing through the second loop, wherein an input of the second fluid loop is disposed downstream of said fluid pump and an output of the second fluid loop is disposed upstream of said fluid pump. The method comprises causing fluid to flow within a first stage comprising one or more reactors and a fluid pump, wherein the first stage is configured to decompose a cumene hydroperoxide in the presence of a catalyst mixture to form a dicumyl peroxide mixture. The method also comprises causing at least a portion of the fluid to flow through a instrumentation line in open fluid communication with the first stage. This instrumentation line comprises an instrument configured to measure a characteristic of the fluid flowing through the instrumentation line and an input of the instrument line is disposed downstream of said fluid pump.
Abstract:
Die vorliegende Erfindung betrifft ein Verfahren zur kontinuierlichen Herstellung von Nitrobenzol durch Nitrierung von Benzol mit einem Gemisch aus Salpetersäure und Schwefelsäure unter adiabaten Bedingungen, bei dem während eines Produktions Stillstandes nicht die ganze Produktionsanlage abgefahren wird, sondern die Produktionsanlage ganz oder zumindest teilweise „im Kreis" gefahren wird. Des Weiteren betrifft die vorliegende Erfindung eine Anlage zur Herstellung von Nitrobenzol und ein Verfahren zum Betrieb einer Anlage zur Herstellung von Nitrobenzol.
Abstract:
The invention relates to a multi-zone reactor suitable for the continuous fluidized bed polymerization of one or more α-olefin monomers of which at least one is ethylene or propylene, which multi-zone reactor is operable in condensed mode, which multi-zone reactor comprises a first zone, a second zone, a third zone, a fourth zone and a distribution plate, wherein the first zone is separated from the second zone by the distribution plate, wherein the multi-zone reactor is extended in the vertical direction wherein the second zone of the multi-zone reactor is located above the first zone and wherein the third zone of the multi-zone reactor is located above the second zone, and wherein the fourth zone of the multi-zone reactor is located above the third zone wherein the second zone contains an inner wall, wherein at least part of the inner wall of the second zone is either in the form of a gradually increasing inner diameter or a continuously opening cone, wherein the diameter or the opening increases in the vertical direction towards the top of the multi-zone reactor wherein the third zone contains an inner wall, wherein at least part of the inner wall of the third zone is either in the form of a gradually increasing inner diameter or a continuously opening cone, wherein the diameter or the opening increases in the vertical direction towards the top of the multi-zone reactor wherein the largest diameter of the inner wall of the third zone is larger than the largest diameter of the inner wall of the second zone.
Abstract:
A polyolefin production system including: a first reactor configured to produce a first discharge slurry having a first polyolefin; a second reactor configured to produce a second discharge slurry having a second polyolefin; and a post-reactor treatment zone having at least a separation vessel configured to receive the second discharge slurry or both the first discharge slurry and the second discharge slurry.
Abstract:
Digestion units for processing cellulosic biomass can comprise a chamber having a height that is greater than its width, the chamber having an opening suitable for solids introduction located within the upper 20% of its height; one or more first fluid conduits connected to the chamber within the lower 20% of its height, at least one of the first fluid conduits extending into the chamber and being elevated above the bottom of the chamber; one or more second fluid conduits connected to the chamber within the upper 20% of its height, at least one of the first fluid conduits being fluidly coupled to at least one of the second fluid conduits; a porous medium located in the chamber within the lower 20% of its height; and a movable pressure isolation device covering the opening; wherein the digestion unit is operable to maintain a pressure of at least 30 bar.
Abstract:
본 발명에 따른 액체금속을 이용한 열분해 장치는 액체금속이 수용되는 중공의 반응로, 상기 반응로에 연결되는 순환 펌프, 상기 반응로 상부에 배치되며, 상기 순환 펌프로부터 상기 액체금속을 전송받는 버퍼 탱크, 상기 버퍼탱크에 결합되고, 상기 버퍼 탱크 내의 액체금속을 상기 반응로 내부로 분사하는 노즐, 및 상기 반응로 내의 상기 액체금속으로 공기를 공급하는 공기 공급원을 포함하며, 상기 반응로에 투입된 연료로부터 발생한 챠(char)는 상기 공기 공급원을 통해 상기 반응로의 하부로 유입된 공기와 반응하여 연소하고, 상기 노즐로부터 분사된 상기 액체금속의 입자는 상기 반응로에서 발생된 가스와 반응하여 상기 가스를 정제하는 것을 특징으로 한다.
Abstract:
The present invention provides a one-step urea synthesis system. In one embodiment, the system comprises a magnetic induction zone, a reaction chamber being disposed in and between the magnetic induction zone, a plurality of platforms being disposed inside the reaction chamber, catalyst/catalyst support micro-reactors grown on the bottom part of the plurality of platforms, a reactant gases inlet positioned at the bottom part of the reaction chamber for taking in reactant gases, wherein after the reactant gases enter the reaction chamber, they flow upward and reacts with the catalyst/catalyst support micro- reactors to form molten urea; and an outlet positioned at the bottom part of the reaction chamber for discharging the molten urea. The present invention also provides a method for one-step synthesis of urea.
Abstract:
A system and/or process for alkylating hydrocarbons which includes an improved method of safely handling alkylation catalyst is disclosed. The process includes passing the alkylation catalyst from a settler vessel to a catalyst receiving vessel, via a catalyst cooler, for containment therein in the presence of a condensible gas. Also disclosed is a method for controlling the pressure in the catalyst receiving vessel by controlling the rate of removal of vapors.
Abstract:
Apparatus (202) for olefin polymerization includes a plurality of shell and tube olefin polymerization reactors (202a, 202b), each of which has an olefin polymerization reaction mixture inlet connection and a crude polyolefin product outlet connection (55a, 55b). Each reactor (202a, 202b) is equipped with a recirculation system including a pump (25a, 25b) arranged to circulate a reaction mixture through the tube side of the reactor (202a, 202b) independently of the introduction of olefin polymerization reaction mixture into the reactor (202a, 202b). The apparatus (202) also includes an inlet reaction mixture distribution manifold (215, 15a, 15b) and an outlet polymerization reaction mixture collection manifold (255, 55a, 55b) interconnecting the reactors (202a, 202b) for operation in parallel. The apparatus (202) also includes catalyst composition and catalyst modifier inlets (16a, 16b, 30a, 30b) for each reactor (202a, 202b) arranged such that a catalyst modifier to may be introduced into each reactor (202a, 202b) at a rate which is independent of the introduction of catalyst composition. The apparatus (202) further incorporates a crude polyolefin product catalyst removal and wash system including a plurality of settler vessels (302, 306, 308), associated piping and an inlet (318) for a catalyst killing agent. This crude polyolefin product catalyst removal and wash system operates to receive crude polyolefin product from the crude polyolefin product outlet (255) and remove residual catalyst therefrom.