| OCR Text |
Show 3.1.4 Structure of regenerator When regenerator is selected ,it is necessary to consider the following respect. (1) The developed burner has the pressure drop below a current burner. (2) The structure not damaged easily and achieve the longevity extension. (3) The structure which exchanges or repairs easily. Then regenerator of various shape and materials was tested under the same temperature condition as commercial operation. As the result of the test, it has been clarified that the pressure drop for various regenerator is the following order. Honeycomb < Pipe < Ball « Raschig ring It had turned out that honeycomb was damaged only by using for about 50 hours while testing and the repair was difficult. Otherwise, it was confirmed that the ball and the pipe had longevity for three years or more by the long term use test under the same condition as a commercial operation. So, the ball or the pipe was selected as regenerator. In the developed burner the structure to pack the ball or the pipe of high alumina into the heat resistance steel case, as shown in Fig.9, was adopted and made it easy to maintenance. Relation between pressure drop of whole system and waste gas flow rate was shown in Fig. 10. From this figure, pressure drop of developed burner is larger than that of current burner. But the developed burner of the 7 5 % of a current burner gas flow rate has an equal heating ability with the current burner, because of its high heating efficiency. So, the pressure drop of developed burner is substantially equal to that of current burner. Regenerator Case Combustion Tube \ or ^ L <& \ Magnification Regenerator N^X Fig.9 Structure of regenerator Recuperator Air -r-•=£= C J J P (p\ Waste Gas £cH» Measured Points of Conventional Burner © | Regenerator (^_ D g35p> Dn •&-+ Measured Points of New Regenerative Burner CL CO o Q_ o O New Regenerative • Conventional Target Line Conventional Max. 50 100 150 200 250 300 Waste Gas Flow Rate (Nm3/Hr) Fig.10 Pressure drop of the developed R/T burner svstem |
