Catalyst stripping

Catalyst circulation coke is a hydrogen-rich coke from the reactor-stripper. Efficiency of catalyst stripping and catalyst pore size distribution affect the amount of hydrocarbons carried over into the regenerator. 

Figure 3.23 Photograph of the catalyst structure inserted in the ceramic support. Close-up of the holes in the platinum catalyst strip [63],...

Catalyst stripping the introduction of steam at a point where spent catalyst leaves the reactor in order to strip (i.e., remove) deposits retained on the catalyst. 

Wilcox J. Optimizing Spent Catalyst Stripping to Enhance ECC Unit Performance. Albemarle Catalysts Courier, Issue 71, 2008. 

Figure 9 Catalyst strips Hastelloy strips coated with Pt/Ti02 or Fe203 catalyst...

Overall, evaluation of catalysts on resid feedstocks requires sophisticated and well integrated catalyst deactivation, catalyst stripping and cracking systems. It is important to determine not only the coke yield, but each of its components (Catalytic coke, contaminant coke, CCR coke and stripper (soft) coke). This paper provides details on how each of the components of the coke yield may be experimentally determined using catalyst metallation by cyclic deactivation, catalyst strippability measurements and modified catalytic cracking techniques. 

Flwex . [Fioridin] Attapulgiiecby td)-sorbent and adsorbent for jet fuel treating, catalyst stripping, transformer oil purification, oil r amation, min. and veg. oil pu cation absorbent carrier for pesticides. 

UOP Stack Stacked configuration Improved air compression for smaller vessels Gravity flow of spent catalyst to regenerator Catalyst stripping introduced... 

Excessive carbon formed in cracker] cracker operating intensity above usual for FCCU excess aromatics in feed/changes in feed/poor catalyst stripping/heavier recycle/leakage of fractionator bottoms into the feed/[sintered catalyst] /[feed contaminated svith metals] /[feed contaminated with heavy hydrocarbons, especially aromatics]. ... 

Poor catalyst stripping] insufHcient steam stripping flowrate/faulty flow controller on steam flow/faulty design of stripper/reactor temperature too low/faulty contacting between steam and catalyst/circulation rate too high/coarse particles. 

Spirocyclic phosphoric acid catalyst STRIP (6) turned out to be crucial in the development of the kinetic resolution of homoaldols. The SPINOL backbone outperformed a variety of other previously described phosphoric acids based on BINOL (3 and 2), H8-B1NOL (9), VAPOL (1), and TADDOL (10) backbones (Table 2). 

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