February 2002

Special Report: Clean Fuels

Manage refinery spent caustic efficiently

A small Brazilian refiner uses an oxidation process to treat caustic from gasoline-sweetening efforts

Carlos, T. M. S., Refinaria de Petroleos de Manguinhos; Maugans, C. B., USFilter, Zimpro Products

Processing low-sulfur fuels will require refiners to use more polishing and sweetening processes to strip out sulfidic and acidic compounds. Caustic pre-washings and gasoline sweetening processes effectively remove mercaptans and disulfides from hydrocarbon streams. However, the spent caustic is considered a hazardous stream and must be handled as such. It cannot be directly managed by biological wastewater treatment processes. Thus, refiners must dispose of this product offsite or use other treatment methodologies. Consequently, as refiners use more polishing and caustic-washing applications to produce cleaner fuels, disposal/treatment of spent caustic is more crucial. Case

Log in to view this article.

Not Yet A Subscriber? Here are Your Options.

1) Start a FREE TRIAL SUBSCRIPTION and gain access to all articles in the current issue of Hydrocarbon Processing magazine.

2) SUBSCRIBE to Hydrocarbon Processing magazine in print or digital format and gain ACCESS to the current issue as well as to 3 articles from the HP archives per month. $409 for an annual subscription*.

3) Start a FULL ACCESS PLAN SUBSCRIPTION and regain ACCESS to this article, the current issue, all past issues in the HP Archive, the HP Process Handbooks, HP Market Data, and more. $1,995 for an annual subscription.  For information about group rates or multi-year terms, contact email Peter Ramsay or call +44 20 3409 2240*.

*Access will be granted the next business day.

From the Archive



{{ error }}
{{ comment.comment.Name }} • {{ comment.timeAgo }}
{{ comment.comment.Text }}