How high can the flue gas temperature at the inlet of the air preheater be
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How high can the flue gas temperature at the inlet of the air preheater be, and what maximum temperature can the preheater withstand? *e*e
The hot air temperature in the tube-type air preheater of our company is 450 degrees
Ours is 160 degrees. It might be higher
Generally, single-stage air can be heated to 280-300 degrees, and air and flue gas should not intersect more than 4 times.
It depends on what type of air preheater you are using. You can refer to the second edition of the book \"Tubular Heating Furnaces\", which provides detailed descriptions of the air preheaters commonly used in refineries, such as hot oil-type, rotary-type (less common), steel tube-type, glass tube-type, and heat pipe-type air preheaters. Go and take a look
The maximum temperature varies depending on the type of air preheater
This post was last edited by zgj2405 on 2011-8-16 at 12:41. The flue gas inlet temperature varies depending on the material used, the type, and the structure. The inlet temperature of the plate-type air preheater in U.S. OCAP can reach up to 870 degrees; those who wish to know more detailed technical specifications are invited to send an email.
Reply to 2# linweihua6: I was wondering what is the service life of the tubular air preheater in your company?
Reply to 8# zxltj999: It has been in use for 6 years with no problems; the material is 321
Reply to 9# linweihua6: A lifespan of six years is considered long; the flue gas outlet temperature shouldn’t be lower than 160 degrees, right?
Reply to 10# zxltj999: The air preheater of this device has three stages – the first stage is of the tubular type, the second stage is of the heat pipe type, and the third stage is of the finned tube type. The flue gas emission temperature is around 155 degrees in summer and around 135 degrees in winter, with the sulfur content in the fuel gas being less than 10 ppm