Bruce Hook

Particle Shape plays a consideration in tumble mixing. For flat or disc shaped particles, understanding when the mechanism of particles sliding dominates over rolling has an impact on flow regime and the mixing time of the segregated mixture. Data and models will be presented.

... Titre du document / Document title. Analysis of data from trickle bed reactors. Auteur(s) / Author(s). HOOK BD ; COLLINS GM ; AKGERMAN A. ; Affiliation(s) du ou des auteurs / Author(s) Affiliation(s). ... Mots-clés français / French Keywords. Réacteur catalytique lit fixe. ; Gaz ...

The Dow Chemical Company is currently the world's largest producer of epichlorohydrin, a key building block in the synthesis of liquid epoxy resins. In 2006, Dow announced its intent to manufacture epichlorohydrin in China (150 kTpa) via a novel, acid-catalyzed hydrochlorination process using glycerin. The increased availability of glycerin stems from the production of biodiesel. The process not only utilizes a renewable feedstock, but it allows for an economically attractive alternative to the incumbent process. This paper will discuss the advantages of the Dow glycerin-to-epichlorohydrin process (GTE) over that of existing process routes. These include much faster reaction kinetics, the ability to produce a more concentrated dichlorohydrin stream, high regioselectivity to 1,3-dichloro-2-propanol, formation of very low levels of RCl byproducts, and the fact that this process, run in either batch or continuous operation, may operate without a solvent. All of these advantages mak...