Process for removing a small-molecule contaminant from a chlorine compound stream

The invention pertains to a process for removing a small-molecule contaminant from a chlorine-compound stream, the process comprising an adsorption sequence comprising the steps of (i) an adsorption sequence comprising the steps of - contacting a chlorine compound stream comprising a small- molecule contaminant with an adsorbent for the small- molecule contaminant, the chlorine compound being chlorine or chloromethane, said chlorine compound stream being in the liquid phase, and - withdrawing a purified chlorine compound stream from which small- molecule contaminant has been removed from the adsorbent, and (ii) a desorption sequence comprising the steps of - contacting the adsorbent containing small-molecule contaminant with a chlorine compound stream in the gaseous phase, and - withdrawing a chlorine compound stream comprising small molecule contaminant in the gaseous phase from the adsorbent, wherein the chlorine compound stream used in the desorption sequence is derived from the purified chlorine compound stream obtained in the adsorption section. The chlorine compound steam preferably is a chlorine stream or a monochloromethane stream. The small-molecule contaminant preferably is water. The process according to the invention allows the use of less equipment and gas streams, is flexible and avoids the introduction of additional contaminants

Residence time distribution in a rotor-stator spinning disc reactor

This paper describes the residence time distribution in a rotor-stator spinning disc reactor. This reactor consists of a disc with high rotation speed (up to 2000 rpm), between two stators with a small rotor-stator gap (0.5 to 3 mm). Residence time distribution experiments, at flow rates of 0.45 to 1.8 L/min, show that the flow in the rotor-stator spinning disc reactor can be described by a plug flow – mixer model. Predicted hydrodynamic velocity profiles confirm plug flow conditions in the center, and well mixed behavi

Electronic controlled multi stage counter-current micro extractor in the flow range of 1 to 10 ml min-1

Abstract onl

Process for preparing monodispersed emulsions

A process for preparing an emulsion is disclosed comprising: injecting a first liquid as dispersed phase liquid through a central inlet of a microchannel (15) system with a cross junction geometry chip and injecting a second liquid as continuous phase liquid through the outer cross inlet (16), which continuous phase liquid does not instantly mix with said injected first liquid prior to the cross junction, wherein the flow rate Qc of the continuous phase in cubic meters per second is given by (I) where A is the exit area of the microchannel (17) in square meters, y the interfacial tension between the first liquid and the second liquid in Newtons per meter and [mu]d the viscosity of the dispersed phase in Pascal-seconds, characterized in that f is in the range from 0.04 to 0.25

Process for preparing monodispersed emulsions

A process for preparing an emulsion is disclosed comprising: injecting a first liquid as dispersed phase liquid through a central inlet of a microchannel (15) system with a cross junction geometry chip and injecting a second liquid as continuous phase liquid through the outer cross inlet (16), which continuous phase liquid does not instantly mix with said injected first liquid prior to the cross junction, wherein the flow rate Qc of the continuous phase in cubic meters per second is given by (I) where A is the exit area of the microchannel (17) in square meters, y the interfacial tension between the first liquid and the second liquid in Newtons per meter and [mu]d the viscosity of the dispersed phase in Pascal-seconds, characterized in that f is in the range from 0.04 to 0.25

Hydrodynamics of high gas-liquid ratio flows in a rotor-stator spinning disc reactor

The rotor-stator Spinning Disc Reactor (rs-SDR) is a versatile continuous flow reactor aiming at intensification of (micro)mixing and intensification of mass and heat transfer rates for both single and multiphase processes [e.g. 1,2]. For such transfer processes the hydrodynamics of the fluids govern the performance of the reactor. While for a single liquid flow the hydrodynamics in the rs-SDR are relatively well understood [3], for gas-liquid flows only low gas-liquid volumetric flow ratios (φv,G/φv,L≤1) have been described [2]. However, in many applications (such as boiling/condensing fluids, gas absorption) much higher gas-liquid flow ratios are encountered. To be able to perform (and more important, to control) such processes using a rs-SDR, the current work presents gas-liquid hydrodynamics (using high-speed image analysis), and the accompanying pressure drop, for high gas-liquid flow ratios (φv,G/φv,L = 120)