Laboratory evaluation of FCC commercial catalysts

Passamonti, Francisco Javier; Puente, Gabriela de la; Sedrán, Ulises

doi:10.1016/j.cattod.2007.12.123

Cited by 35 publications

(16 citation statements)

References 16 publications

(14 reference statements)

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“…The contact between the gas phase and catalyst is then similar to a plug flow, and more representative of the contact between solid and feed in the industrial risertype reactor and fixed (fluid) bed reactors, especially regarding the catalyst and gas residence time [9]. A number of studies in catalysts evaluation [24], kinetic study [25], feed evaluations [26][27][28] have been carried out with this unit. Pressure monitoring during the tests also allowed for an estimation of adsorption constants of feed and products on the catalyst.…”

Section: Fixed Fluid Bed Solid Well Mixed Gas: Berty Type Reactors Rmentioning

confidence: 99%

FCC testing at bench scale: New units, new processes, new feeds

Corma

Sauvanaud

2013

Catalysis Today

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As the FCC process has evolved over decades, several laboratory scale equipment have appeared to maintain a proper assessment of catalysts activity. Several laboratory equipments are available for simulating the FCC process, from the well known fixed bed, MicroActivity Test to newer, fluid bed or transported bed units. As well, a number of units have been created to simulate other parts of the process such as regenerator or stripper, The increased pressure for treating non-conventional feeds, from reprocessing gasoline to extra-heavy feeds or oils produced from biomass containing large amounts of heteroatoms, increase the needs to have a laboratory test which is as close as possible to the process so that data extraction from the laboratory test are simplified, thus less prone to errors or misunderstanding. KeywordsLaboratory testing, catalytic cracking, naphtha cracking, coked catalyst, biooil cracking Highlights• FCC process is adapting to new feeds and new processes• Heavy resid feeds and biomass-derived feeds are being extensively tested • Significant operation and process changes are contemplated to squeeze maximum value from feeds: naphtha reprocessing, use of partially coked catalysts, several independent risers. 3

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Section: Fixed Fluid Bed Solid Well Mixed Gas: Berty Type Reactors Rmentioning

confidence: 99%

FCC testing at bench scale: New units, new processes, new feeds

Corma

Sauvanaud

2013

Catalysis Today

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“…Numerous studies reporting the effect of unit cell size on the product selectivity have been presented [1][2][3][4][5][6][7][8][9] but the performance in FCC units. Some examples are outlined below briefly:…”

Section: Introductionmentioning

confidence: 99%

Impact of rare earth concentration and matrix modification in FCC catalysts on their catalytic performance in a wide array of operational parameters

Wallenstein

Schäfer

Harding

2015

Applied Catalysis A: General

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“…The unit has a bed fluidized in a chamber and mimics, in ideal terms, the riser reactor in commercial units, following the analogy between position in the riser and reaction or residence time in the laboratory unit. It was shown in a previous paper that, in comparison to MAT-type reactors, the CREC riser simulator reactor allows the defining of catalyst rankings that are more sensitive to various test parameters and that some hydrocarbon group yields are overall closer to commercial values. Particularly, differences between reactors are notorious in the coke yields, which are very important from the operative standpoint, with much higher yields observed in MAT units.…”

Section: Introductionmentioning

confidence: 99%

Comparison between MAT Flow Fixed Bed and Batch Fluidized Bed Reactors in the Evaluation of FCC Catalysts. 2. Naphtha Composition

Passamonti¹,

Puente²,

Sedrán³

2009

Energy Fuels

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A comparison was performed between the performances of a MAT type reactor (flow fixed bed) and a CREC riser simulator reactor (batch fluidized bed) in the conversion of two VGO feedstocks (aromatic and paraffinic types) over three commercial equilibrium FCC catalysts, under similar conditions. In both units the reaction temperatures were 500 and 550 °C. The catalyst-to-oil relationships were from 2.3 to 6.2 (cumulative) and 6.2, and the times were from 15 to 40 s (time on stream) and from 5 to 30 s (reaction time) in the MAT reactor and the CREC riser simulator reactor, respectively. Results were compared in terms of the composition of the naphtha, in view of its contribution to the gasoline pool. Advantages were observed with data from the CREC riser simulator reactor, mainly derived from the fact that naphtha yields were, in general, closer to commercial values and showed a stable primary product behavior. Thus, they are easier to analyze as naphtha selectivities did not depend on the conversion reached. On the contrary, naphtha yields in the MAT reactor showed a maximum as a function of conversion. The comparison of the product distributions observed in the naphthas from each unit at the same conversion level showed that they can be very different; the naphtha obtained in the CREC riser simulator reactor was more paraffinic and less aromatic than the one obtained with the MAT reactor, and the proportions were similar to commercial values. Ranks of catalysts based on the various hydrocarbon fractions observed in the naphtha from each setup also differed in most of the cases. The differences in the results could be the consequence of notoriously different contact between reactants and catalyst and operative modes in each reactor, then impacting on the complex set of reactions occurring in FCC.

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Laboratory evaluation of FCC commercial catalysts

Cited by 35 publications

References 16 publications

FCC testing at bench scale: New units, new processes, new feeds

FCC testing at bench scale: New units, new processes, new feeds

Impact of rare earth concentration and matrix modification in FCC catalysts on their catalytic performance in a wide array of operational parameters

Comparison between MAT Flow Fixed Bed and Batch Fluidized Bed Reactors in the Evaluation of FCC Catalysts. 2. Naphtha Composition

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