OCR Text |
Show 280 '260 ······- .. ······i:··-··············I··· .. ····1¢10.tebU~ ............ ~ .................. . - : - - - - - - 240 Ecc.... 220 0z ···N~r··L.········L ............................... , ..................................... . 3, gas : : : : i NH3; a~. ! . ! . . 200 . ~- ' ~ Ure~ aq. ~ 180 160 0 0.05 0.1 0.15 0.2 0.25 0.3 Delay time of N-agent injection, S Figure 9. BSF experimental results: NO removal by 10% rebuming and with injections of N-agents (ammonia and urea, NSR=1.5) into the reburning zone at various delay times from 0 to 0.25 s. OFA was added at 1422 K. Initial NO concentration is 530 ppm. 350 300 250 ccE.... 200 0z 150 100/0 rebumingl ... :--1--:--' ...................... ,.. ...................... ~ ........................ ~ ....................... 'f' ..................... . ············ .. ········t······ .. ············ .. ·~···· .. ·· .. ·· ............ j ........................ ; ...................... . I .. JrealNa, N$R=1.5 ~ .;. ~ ; 100 50 : ................... -.~ ....................... ~ .-...... -............. ...................... . u ~ea/Na, NSf=2.5 l i ········· ·····T······ ·u· ···T······· · ·······u .. uu...... ......... 0 0.1 0.2 0.3 0.4 0.5 0.6 Delay time of N-agent injection, S Figure 10. BSF experimental results: NO removal by 10% rebuming and with injections of urea (NSR=1.5 and 2.5) and 100 ppm Na into the reburning zone at various delay times. OFA was added at 1422 K. Initial NO concentration is 530 ppm. 20 |