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Comment Processing & Handling

Feed injector lowers energy consumption of FCC units

By Scott Jenkins |

A newly launched feed injector for fluid catalytic cracking (FCC) units at petroleum refineries reduces the oil-side pressure drop and lowers the steam required, enabling facilities to achieve the same performance with lower energy consumption, according to developer Lummus Technology (Houston; www.lummustechnology.com). Known as the Micro-Jet Flex, the new feed injector is a next-generation version of the company’s Micro-Jet product line. Lummus’ development engineers have re-designed the injector’s internals to maximize surface-area contact between the liquid oil feed and the circulating solid-catalyst particles. To achieve this, the injector reduces droplet sizes, narrows the droplet size distribution and optimizes the spray pattern into the catalyst stream.

“The reduced droplet size and narrow size distribution allowed by the new injector ultimately translates into less coke formation and more conversion of heavier feeds into olefins,” says Rama Rao Marri, senior director of FCC technology at Lummus Technology.

The Micro-Jet Flex can be easily retrofitted into any existing FCC unit, and is a simple drop-in replacement for plants that are already using other Micro-Jet products, remarks Todd Vogt, vice president and managing director for refining and gas processing at Lummus. With the Micro-Jet Flex, “we’ve built on the same principles at play in previous injectors, but to a much greater effect,” says Vogt. “The introduction of the Micro-Jet Flex is part of a wider effort by Lummus to support refineries seeking to increase production of petrochemical feedstocks, such as light olefins, in their FCC units.”

The injector has been tested at Lummus’ R&D facilities and is currently undergoing engineering design for the first installation in a commercial facility, notes Vogt.

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