Concept

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Publications associées (144)

Dynamic optimization of batch emulsion polymerization using simulated annealing

The aim of this paper is to present a global approach to dynamic optimization of batch emulsion polymerization reactors using a stochastic optimizer. The objective is to minimize the final batch time with constraints on the final conversion and molecular w ...

2004

Novel monolithic electrochemically promoted catalytic reactor for environmentally important reactions

Christos Comninellis, György Foti

A novel dismantlable monolithic-type electrochem. promoted catalytic reactor and "smart" sensor-catalytic reactor unit has been constructed and tested for hydrocarbon oxidn. and NO redn. by C2H4 in presence of O2. In this novel reactor, thin (.apprx.20-4 ...

2004

BWR stability and bifurcation analysis using a novel reduced order model and the system code RAMONA

Abdelhamid Dokhane

Boiling water reactor (BWR) stability analysis is usually carried out using large system codes. However, because of the large computational efforts required, such codes cannot in practice be employed for the detailed investigation of the complete manifold ...

EPFL2004

Plutonium management in the medium term

Rakesh Chawla

For many years various countries with access to commercial reprocessing services have been routinely recycling plutonium as UO2/PuO 2 mixed oxide (MOX) fuel in light water reactors (LWRs). This LWR MOX recycle strategy is still widely regarded as an interi ...

American Nuclear Society2004

Cermet sphere-pac concept for inert matrix fuel

Manuel Alexandre Pouchon

In the inert matrix fuel concept, plutonium reprocessed from spent fuel is burned in an inert matrix, e.g. yttria-stabilized zirconia. Coming from wet reprocessing, the internal gelation can perform an easy micro-spheres production. Utilization of these pa ...

Elsevier2003

Quantitative calorimetric investigation of fed-batch cultures of Bacillus sphaericus 1593M

Urs von Stockar, Ian William Marison

For many years, calorimetry has been recognized as a powerful and universal tool for monitoring chem. and biol. processes. A lab.-scale reaction calorimeter (RC1, Mettler-Toledo), initially developed for chem. reaction studies with a sensitivity of 100-150 ...

2002

Neoclassical transport and alpha particle confinement in novel 3-D reactor systems

Laurent Villard, Wilfred Anthony Cooper

Neoclassical transport and a particle confinement are analysed for three 3-D reactor designs-the QAS3, the ST/sphellamak hybrid and the sphellamak-using the VENUS code. It is observed that neither the QAS3 nor the ST/sphellamak is truly aquasi-axisymmetric ...

2002

Structured multiphase reactors based on fibrous catalysts: nitrite hydrogenation as a case study

Albert Renken, Lioubov Kiwi, Volker Höller

A reactor concept designed as a bubble column staged with fibrous catalytic layers is tested on pilot-scale for the redn. of nitrite to N by H. CO2 is used to neutralize the hydroxide ions produced during hydrogenation of nitrite. The effective reaction ra ...

Elsevier2001

Synchrotron radiation total reflection X-ray fluorescence and energy dispersive X-ray fluorescence analysis on AP1 (TM) films applied to the analysis of trace elements in metal alloys for the construction of nuclear reactor core components: a comparison

Synchrotron radiation induced total reflection X-ray fluorescence (TXRF) and conventional 45 degrees energy dispersive X-ray fluorescence analysis (EDXRF) using a 150-nm-thick AP1 (TM) film as sample carrier have been exploited for the elemental analysis o ...

2001

Reduction of nitrite-ions in water over Pd-supported on structured fibrous materials

Albert Renken, Lioubov Kiwi, Volker Höller

Catalytic hydrogenation of NO2- in water to N2 over Pd-supported on different woven fibrous materials was studied. Low porosity C fiber, low porosity D-type glass fiber, and composite (glass covered by g-Al2O3) fiber were used. Pd dispersion was compared f ...

2001

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