July 2000

Heat Transfer

Eliminate air preheater corrosion

Consider these design options to improve reliability and efficiency

Nayek, S. K., Dingankar, S., Reliance Industries Ltd.

Waste heat recovery from fired heater flue gases is one of the important factors that influences overall efficiency of industrial heaters. In any conventional design, heat available in the flue gas is recovered in economizers and/or air preheaters before allowing it to go to the heater stack. While combustion air is a very good recipient of low value flue gas heat, the presence of acidic gases in the flue (from impurities like sulfur in fuel) has caused exchanger design, operation and maintenance to be a challenge. About 10% of the heat released by the fuel normally has potential for heat recovery in an air preheater. A cross-flow heat exchanger is commonly used in air preheater design.

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 J'Nette Davis-Nichols at Jnette.Davis-Nichols@GulfEnergyInfo.com or +1 713.520.4426*.

*Access will be granted the next business day.

Related Articles

From the Archive

Comments

Comments

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