Yuav Ua Li Cas Xaiv Cov Khoom Siv Denitrification

The selection of denitrification equipment requires comprehensive consideration of flue gas characteristics, emission standards, and economic efficiency. High-temperature flue gas (850~1100℃) is suitable for SNCR technology, with an efficiency of 30%~70% and lower cost (1/3~1/2 of SCR). Medium-temperature flue gas (300~450℃) is recommended for SCR technology, with an efficiency >90%, suitable for ultra-low emission requirements (NOx≤50mg/m³). Low-temperature flue gas (50~300℃) can use low-temperature SCR or PNCR technology, with an efficiency of 85%~95% and no risk of ammonia escape. High-sulfur flue gas (SO₂>500mg/m³) is recommended to use PNCR or sulfur-resistant SCR catalysts. For high-dust environments (>20g / m³), ​​PNCR qhuav hmoov txhaj los yog SCR nrog ultrasonic soot tu yog pom zoo. Ultra- emissions qis (NOx Tsawg dua lossis sib npaug li 30 mg / m³) xav tau SCR lossis kev sib xyaw ntawm cov thev naus laus zis, thaum cov pa tawm nruab nrab (NOx Tsawg dua lossis sib npaug li 200 mg / m³) tuaj yeem ua tiav nrog SNCR lossis PNCR, uas yog 40% -50% pheej yig dua SCR. Hais txog kev lag luam, SNCR muaj qhov peev nyiaj qis tshaj plaws (kwv yees li 200,000-350,000 RMB rau 10 t / h boiler), thaum SCR muaj cov nqi khiav lag luam ntau dua (cov nqi tu txhua xyoo tuaj yeem ncav cuag 14 lab RMB), thiab PNCR reagent nqi tsuas yog 2,000-3,000 RMB / ton. SNCR/PNCR yog qhov kev xaiv zoo tshaj plaws rau cov haujlwm me thiab nruab nrab{19}}cov haujlwm loj, nrog rau tag nrho cov nqi ntawm lub neej 40% -70% qis dua SCR.