Fixed-fluid-bed reactor

More recently, Sasol commercialized a new type of fluidized-bed reactor and was also operating a higher pressure commercial fixed-bed reactor (38). In 1989, a commercial scale fixed fluid-bed reactor was commissioned having a capacity similar to existing commercial reactors at Sasol One (39). This effort is aimed at expanded production of higher value chemicals, in particular waxes (qv) and linear olefins. 

Figure 1. Selectivity for coke and gasoline octane as a function of unit cell. Gasoline octane curve obtained in a fixed fluid bed reactor at 657e conversion, 4 C/0, 30 WHSV, 510°C.

Test Methods. Since its inception, the Mitchell Method (MM) or slight variations (often referred to as the Modified Mitchell Method) have been en )loyed by researchers evaluating FCC catalyst as a sin )le, inexpensive, and fast procedure by which to simulate the effect of contaminant metals on catalyst performance. As a fallout of more sophisticated catalytic testing in fixed fluid bed reactors, the method of cycUc metals deposition (CMD) has also emerged as a useful method for introducing metal contaminants. 

---