Fluidized-bed reactor for methanol synthesis. A theoretical investigation

Simulation and experiment study of dimethyl ether synthesis from syngas in a fluidized-bed reactor

“…Wagialla et al (1991) adopted P-M model for the simulation of methanol synthesis, but Fernandes and Lona (2001) adopted P-P model for the simulation of polyethylene production. Levenspiel (1969, 1991) conclude that the increase of the ratio of bed height-to-diameter (L f /d t ), especially over 10, leads to plug flow in dense phase, and that there is also a general principle to judge the flow type in dense phase: if u 0 /u mf > 3-11, the reverse flow of gas in dense phase may happen, because the increase of gas velocity leads to more back-mixing of solid particles in dense phase.…”

A novel water perm-selective membrane dual-type reactor concept for Fischer–Tropsch synthesis of GTL (gas to liquid) technology

“…The calculated value for the efficiency of the fixed-bed reactor is 0.9 [48]. In the case of the fluidized-bed reactor, the effectiveness factor is taken into consideration as one due to the elimination of diffusive limitations [49].…”

Dynamic simulation of a cascade fluidized-bed membrane reactor in the presence of long-term catalyst deactivation for methanol synthesis

“…Velardi and Barresi (2002) proposed a multi-stage methanol reactor network with autothermal behavior to promote reactor performance. To improve the performance of the methanol reactor, a number of configurations have been proposed including conventional dual-type reactor (Rahimpour, 2008;Rahimpour and Lotfinejad, 2008a), fixed bed with hydrogen permselective membrane reactors Rahimpour and Ghader, 2004), membrane dual-type reactor (Rahimpour andLotfinejad, 2007, 2008b; Rahimpour and Alizadehhesari, 2009), fluidized-bed reactor (Wagialla and Elnashaie, 1991), fluidized-bed membrane dual-type reactors (Rahimpour and Alizadehhesari, 2008;Rahimpour and Elekaei, 2009; and cascade fluidized-bed membrane reactor .…”

“…As stated before, Wagialla and Elnashaie (1991) mathematically studied a fluidized-bed configuration for methanol synthesis and presented a steady state model based on two phase theory of fluidization. In Table 3, the results of Wagialla's model and plant data are compared with the consequences of our suggested model of fluidized-bed and packed-bed reactor, respectively.…”