Specify packaged steam generators properly

Journal Article · Wed Sep 01 04:00:00 EDT 1993 · Chemical Engineering Progress; (United States)

OSTI ID:5598238

Ganapathy, V

Packages steam generators firing natural gas and fuel oils are widely used in chemical process industries (CPI) plants, petroleum refineries, and cogeneration systems to generate steam for process use or for power. These units are generally shop-assembled and can generate saturated or superheated steam at capacities up to 200,000 lb/h, pressures ranging from 100 to 1,200 psig, and steam temperatures from saturated conditions to 900F. In the past, manufacturers and customers did not concern themselves much with the implications of variations in excess air, gas recirculation, staged combustion, and so on. However, these factors influence emissions of nitrogen oxides (NO[sub x]) and carbon monoxide and affect the boiler size and performance--and they are becoming more and more important in boiler selection and design. (The implications of emissions on boiler design and the need for customized design will be discussed later in the article.) Of course, a standard off-the-shelf design is less expensive than a custom-designed unit, which considers each requirement on a case-by-case basis. This article explains what packaged steam generators are, discusses various aspects of design, and outlines what information the user needs to provide to the supplier when specifying packaged steam generators.

• OSTI ID: 5598238
• Journal Information: Chemical Engineering Progress; (United States), Journal Name: Chemical Engineering Progress; (United States) Vol. 89:9; ISSN 0360-7275; ISSN CEPRA8
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
421000* -- Engineering-- Combustion Systems
AIR POLLUTION
BOILERS
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
DESIGN
MEDIUM PRESSURE
NITROGEN COMPOUNDS
NITROGEN OXIDES
OXIDES
OXYGEN COMPOUNDS
POLLUTION
SPECIFICATIONS
STEAM GENERATORS
TEMPERATURE RANGE
TEMPERATURE RANGE 0400-1000 K
VAPOR GENERATORS