Octanizing
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STATE-OF-THE-ART TECHNOLOGY Octanizing is Axens' continuous catalyst regeneration (CCR) reforming process designed expressly to make high octane reformate from naphtha. The process is firmly established in the refining industry worldwide, owing its strength to numerous features and strong product support from Axens. New advances are constantly being introduced that maintain Octanizing’s top technological position. KEY OCTANIZING FEATURES The Octanizing technology offers unrivaled product yields, low investment and operating costs and an exceptional on-stream factor. This technology exhibits the following key features: Side-by-Side Reactor Arrangement • Easy construction and maintenance access • Minimal thermal expansion problems • Short reactor-heater transfer lines • No height constraints on reactor design • Less than 1% non-flowing heel catalyst • Savings in investment and construction costs Continuous Catalyst Regeneration (CCR) • Smooth operating non pulsing lift system • Fully automated; no operator attention • Low catalyst attrition • Easy maintenance Advanced Regenerator: RegenC-2 • Latest industrially proven technology • Two distinct burning zones for complete coke burn-off with minimum dechlorination • "Dry Burn Loop" for substantially reduced catalyst aging • Optimized oxychlorination parameters with lower chloride consumption • Reduced corrosion potential due to system dryness • Substantially lower annual catalyst cost Optimum Operating Conditions • Very low pressure operation: average is below 3.5 barg (50 psig) • Flexible severity (98 to 104 + RON) • Low recycle H 2 /HC ratio resulting in low power consumption and enhanced yield • Optimized heat recovery for low thermal energy consumption Cost Effective Hydrogen Recovery • Efficient and simple recontacting system for high purity hydrogen and high reformate recovery • Low investment cost and limited utilities consumption A NEW CATALYST: ANOTHER BIG STEP FORWARD The new CR401 catalyst responds perfectly to the ultra-high severity and low pressure conditions required for maximum octane blending value reformate. This superior catalyst features outstanding selectivity because of uniform- and ultra- dispersion of active metals on the carrier. This translates to higher yields compared to competing catalysts. With a tougher carrier material comes even better mechanical resistance and lower catalyst consumption rates than its predecessors. Moreover, the improved hydrothermal stability of this carrier and its superior chloride retention impart an extended catalyst life. Octanizing ™ CCR REFORMING FOR HIGH OCTANE BLENDING STOCK
description
Octanizing
Transcript of Octanizing
STATE-OF-THE-ART TECHNOLOGY
Octanizing is Axens' continuous catalyst regeneration (CCR) reforming process designed expressly to make high octane reformate from naphtha. The process is firmly established in the refining industry worldwide, owing its strength to numerous features and strong product support from Axens. New advances are constantly being introduced that maintain Octanizing’s top technological position.
KEY OCTANIZING FEATURES
The Octanizing technology offers unrivaled product yields, low investment and operating costs and an exceptional on-stream factor. This technology exhibits the following key features: Side-by-Side Reactor Arrangement • Easy construction and maintenance access • Minimal thermal expansion problems • Short reactor-heater transfer lines • No height constraints on reactor design • Less than 1% non-flowing heel catalyst • Savings in investment and construction costs Continuous Catalyst Regeneration (CCR) • Smooth operating non pulsing lift system • Fully automated; no operator attention • Low catalyst attrition • Easy maintenance Advanced Regenerator: RegenC-2 • Latest industrially proven technology • Two distinct burning zones for complete coke burn-off with minimum dechlorination • "Dry Burn Loop" for substantially reduced catalyst aging
• Optimized oxychlorination parameters with lower chloride consumption • Reduced corrosion potential due to system dryness • Substantially lower annual catalyst cost Optimum Operating Conditions • Very low pressure operation: average is below 3.5 barg (50 psig) • Flexible severity (98 to 104+ RON) • Low recycle H2/HC ratio resulting in low power consumption and enhanced yield • Optimized heat recovery for low thermal energy consumption Cost Effective Hydrogen Recovery • Efficient and simple recontacting system for high purity hydrogen and high reformate recovery • Low investment cost and limited utilities consumption
A NEW CATALYST: ANOTHER BIG STEP FORWARD
The new CR401 catalyst responds perfectly to the ultra-high severity and low pressure conditions required for maximum octane blending value reformate. This superior catalyst features outstanding selectivity because of uniform- and ultra- dispersion of active metals on the carrier. This translates to higher yields compared to competing catalysts. With a tougher carrier material comes even better mechanical resistance and lower catalyst consumption rates than its predecessors. Moreover, the improved hydrothermal stability of this carrier and its superior chloride retention impart an extended catalyst life.
Octanizing™ CCR REFORMING FOR HIGH OCTANE BLENDING STOCK
PROCESS FLOW SCHEME
The naphtha feed is mixed with recycle hydrogen, preheated and passes through a series of adiabatic reactors and heaters where it is converted to isomers, aromatics and hydrogen. The effluent is cooled and the liquid is separated from the hydrogen-rich stream. The hydrogen gas is compressed and recontacted with a pumped liquid stream in the recovery system. A high purity hydrogen product gas and a high octane liquid are produced. The liquid is stabilized to remove light ends while the bottoms (reformate) is sent to storage for blending.
EXTENSIVE EXPERIENCE
Axens has been involved in catalytic reforming since 1964 when the first semi-regenerative reforming unit was licensed. Continued development then led to the commercialization of the CCR technologies: CCR processes such as Octanizing and Aromizing are the "workhorses" for Axens' refining and petrochemical sectors respectively. This technology has a long track record of successful performance with over 75 licenses awarded.
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