Guideline specification for procurement of an economizer for a recovery boiler, Technical Information Paper TIP 0416-21 (2009

The economizer installed on a Kraft recovery boiler is the component responsible for the greatest number of tube leaks that result in lost production for the pulp and paper industry. This technical information paper provides the engineer with a guideline specification and supporting information for economizer procurement. The TIP is based on reports from a comprehensive study initiated by the AF&PA Recovery Boiler Committee (1). The study was presented at a TAPPI Conference in 2006 (2). The guideline specification addresses design, materials of construction, manufacturing and shipping recommendations for vertical tube economizers. It is formatted as a procurement specification that can be used as a basis for discussion with suppliers and obtaining quotations. The guidelines are not intended to be applied for a horizontal tube economizer, although there is some information that has merit when applied to a horizontal tube design.