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The Impact of State-of-the-Art FCC Technology

IP.com Disclosure Number: IPCOM000217211D
Publication Date: 2012-May-04

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The IP.com Prior Art Database

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Mobil

The Impact of State-of-the-Art FCC Technology

Chris R. Santner

The M.W. Kellogg Company

Presented at:

 
The M.W. Kellogg Company Refining Technologies Seminar

9-10 February 1995 Houston, Texas


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KELLOGG The Impact of State-of-the-Art FCC Technology j Mobil


1. INTRODUCTION

Over the years, the refining industry has experienced numerous changes in the market environment. Early processes were no more complex than crude distillation. However, today's demand for products has advanced
refining technology into integratedcomplex-
es to process a wide range of feedstocks that
are becoming more challenging. The inher-
ent flexibility of the fluid catalytic cracking
process (FCC) allows the evolution neces-
sary to address the constantly changing
demands placed on today's refineries.

Increasingly competitive markets often require frequent shifts in refined product distributions to satisfy consumer demand.
In rapidly changing markets, it may be necessary to operate for maximum gasoline yield during one period, then rapidly shift to maximum dist i

         I late yieId. AdditionalIy, refiners need the flexibility to opportun- istically change the feed slate when needed to maximize operating margins. An FCC unit with state-of-the-art technology has the flexibility to optimally achieve each of these desired performance goals.

The challenges facing resid FCC technology have always related to the contaminants in

PIPE GRIDAIR

DISTRIBUTOR

  A T W FEEDNOZZLES

CLOSED CYCLONES

STAGEDCATALYST STRIPPER

COUNTER-CURRENT REGENERATOR

DENSE PHASE CATALYSTCOOLER

Figure 1: M.W. Kellogg Orthoflow RFCC

the feedstock: i.e., metals poisons which reduce catalyst selectivity and activity, and carbon residue which acts as a coke precursor. Therefore, the focus of resid FCC technology development is in areas which will reduce coke and gas yield and improve catalyst activity.

As important as new ideas and developments are, successful long-term commercialization of these developments is vital prior to widespread implementation. The mechanical integrity and reliability of technology features are the primary ways an operating company captures the expected benefits for their bottom line profitability. Refinementof mechanical and operations detail is finalized in commercial scale testing.

This paper reviews commercialized Kellogg/MobiI FCC reactor technologies developed to meet the requirements of today's refining market. The following features are discussed, all of which are available in the Orthoflow FCC converter licensed by M.W. Kellogg (Figure


1): These features have been tested in commercial applications.

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The Impact of State-of-the-Art FCC Technology

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J
J
Two-stage catalyst stripping

KELLOGG

Advanced ATOMAXTMfeed injection system


Short contact time reaction system (Closed Cyclones)

A companion paper extends the discussion to include regeneration and catalyst cooling technology.


II. HIGH PERFORMANCE FEED INJECTION

The feed injection system of a ca...