Catalyst basket, reactor development

The RR developed by the author at UCC was the only one that had a high recycle rate with a reasonably known internal flow (Berty, 1969). This original reactor was named later after the author as the Berty Reactor . Over five hundred of these have been in use around the world over the last 30 years. The use of Berty reactors for ethylene oxide process improvement alone has resulted in 300 million pounds per year increase in production, without addition of new facilities (Mason, 1966). Similar improvements are possible with many other catalytic processes. In recent years a new blower design, a labyrinth seal between the blower and catalyst basket, and a better drive resulted in an even better reactor that has the registered trade name of ROTOBERTY . ... 

The falling-basket reactor was developed to meet these requirements. With this device, the catalyst is suspended in the gas phase during the initial stages of the run, then lowered into the liquid for the catalytic reaction portion. Catalyst (25 cc) is loaded in the four arms of the basket assembly, which moves... 

Modified types of rotating basket reactors of similar basic principles have been developed [51,52], The spinning basket reactor apparently can be a good mixer under nonreaction conditions but its effectiveness in reducing interface temperature and concentration differences under reaction conditions is doubted. In this reactor, the true gas velocity relative to the pellets is unknown, because the gas tends to spin along with the basket. Therefore, despite the baffles, an increased speed of rotation does not necessarily reduce the interface temperature and concentration differences to any great extent. This is especially true for smaller catalyst particles and fast reactions. 

Reactor Development—Catalyst Basket. The reactor internals and flow scheme were designed at Amoco Oil Research and Development. Two types of spinning baskets were designed and built, the initial design used a cross-shaped paddle, while a later one adopted an annular shape. The latter improved design was used in all test work. 

A spinning basket reactor has been developed for studying multiphase reactions at high pressure. Studies have been performed on the hydrodesulfurization of various petroleum fractions and a model sulfur compound. Hydrogen and liquid feed are continuously fed to the reactor and contacted with the catalyst which is held in a rotating annular basket. The... 

Tajbl, Simons, and Carberry lnd. Eng. Chem. Fundamentals, 5 (171), 1966] have developed a stirred tank reactor for studies of catalytic reactions. Baskets containing catalyst pellets are mounted on a drive shaft that can be rotated at different speeds. The unit is designed for continuous flow operation. In order to determine if... 

The fluidized bed reactor can also handle fast, complex reactions, with mixing and temperature control being especially good when stirring is provided. Unfortunately, the extent of back mixing is difficult to assess so that the residence time distribution of the reactants in the reactor is uncertain. In addition, only small catalyst particles can be used, and attrition, with the consequent breakdown and loss of catalyst, is a problem. Finally, a catalyst bed is adequately fluidized over only a comparatively narrow range of flow rates. More information about kinetic reactors can be found in reviews [33,34,50], Applications of the basket-type mixed reactor to liquid-solid systems are discussed by Suzuki and Kawazo [62] and by Teshima and Ohashi [63], and the development of a laminar flow, liquid-solid reactor by Schmalzer et al. [64], In the latter reactor the wall is coated with a catalyst layer. 

Recently a rather unique concept was developed by a Fast Engineering Ltd. in Russia [859], The catalyst bed of the radial flow reactor is subdivided by cooling elements into several sections in a spiral-like configuration, as shown in Figure 84. In a revamp operation the existing converter of a 600 t/d ammonia plant in the Cherkassy production complex was equipped with a new basket having the innovative design filled with... 

The reactor s optimization lead to the development of sampling methods which in turn ended in the implementation of a system by which a set of previously identified baskets containing samples of catalysts, are introduced into different spots during the loading process of the reactor. 

A batch reactor with a cooling jacket has been chosen for the comparative studies performed in this paper. The catalyst pellets are located in a special basket. Ideal mixing of the liquid phase and a good development of the gas-liquid interface can be assumed due to the installation of a turbine stirrer and baffles. The following mass balance equations have been denved for the hydrogenation of 2,4-DNT over a palladium on alumina catalyst and performed in the batch reactor with the methanol as an evaporating solvent ... 

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