I D
× COMMENTARYEDITOR'S PAGECOVER STORYIN THE NEWSNEWSFRONTSCHEMENTATOR + Show More
Chemical Engineering MagazineChementator Briefs
Nanofiltration Toray Industries, Inc. (Tokyo, Japan; www.toray.com) has created what…
BUSINESS NEWSTECHNICAL & PRACTICALFEATURE REPORTFACTS AT YOUR FINGERTIPSTECHNOLOGY PROFILEEQUIPMENT & SERVICESFOCUSNEW PRODUCTS + Show More SHOW PREVIEWS

Comment

This solvent-extraction process can monetize tough refinery sludges

By Scott Jenkins |

Construction has begun on a commercial prototype of a low-boiling-point solvent-extraction process for recovering used catalyst powder and slurry oil from a recalcitrant sludge produced in the fluid catalytic cracking units (FCCUs) of petroleum refineries. The process allows refiners to isolate two valuable materials — powdered catalyst material that can be used as an equilibrium catalyst in FCCUs, as well as slurry oil that can be used as premium-grade feedstock for the manufacture of carbon black and needle coke — that would otherwise be wasted, according to developer Cat’ Fine Management Technologies LLC (CFMT; Liberty, Tex.; www.cfmtllc.com). When catalyst powder (fines) escapes through the FCCU cyclones and accumulates in the slurry oil stream, a sludge forms that CFMT CEO Larry Weber likens to “talcum powder in molasses.” The sludge is classified as an Environmental Protection Agency (EPA) Resource Recovery and Conservation Act (RCRA)-listed K-170 hazardous waste, and makes for the “toughest tank-cleaning job in the business,” he says. The current treatment approach for this sludge material involves diluting the slurry-oil storage-tank bottom sludge with light-cycle oil (LCO) and then centrifuging the mixture,…
Related Content
A less expensive way to make graphene
A team from RMIT University (Melbourne, Australia; www.rmit.edu.au) and the National Institute of Technology, Warangal (Warangal, India; www.nitw.ac.in) has developed…

Chemical Engineering publishes FREE eletters that bring our original content to our readers in an easily accessible email format about once a week.
Subscribe Now
How separation processes profit from Industrial Internet of Things (IIoT) solutions
Up to 80% increased production rates in plastic recycling
Higher throughput and purity in sodium bicarbonate production with up to 15% less energy consumption
Help feeding nations with chemical filtering technologies
Not at the forefront of Industry 4.0?

View More

Live chat by BoldChat