Effects of co-disposal of sludge based on TTF-type precalciner on NOx emissions

• Autorzy: Liang Ruru , Yuan Guanglei , Liu Renping , Duan Erhong , Song Jiale

Identyfikatory

DOI

10.37190/epe230305

• Języki publikacji: EN

Abstrakty

EN

To reduce the emission of nitrogen oxides (NOx) during the co-disposal of sludge in a TTF-type precalciner, an optimized co-disposal process of a TTF-type precalciner has been implemented in a cement plant in Hebei. The model was built using ANSYS FLUENT software. The effects of three single-factor perspectives (sludge input ratio, gas flow rate, and tertiary air temperature on NO concentration) were investigated. The response surface method of Box–Behnken design was used. When the sludge ratio increased from 0 to 25%, the NO concentration at the outlet was 122–297 mg/m³. Meanwhile, it increased from 192 mg/ m³ to 241 mg/ m³ since the airflow increased from 95 m³/s to 122 m³/s. The maximum NO concentration was 192 mg/ m³ when the tertiary air temperature was 1170 K. The inter-action between airflow and sludge ratio was more significant than any other interaction between other conditions (P < 0.05). Finally, the optimum conditions were a sludge ratio of 5%, airflow 109 m³/s, and tertiary air temperature 1280 K. NO concentration was 166.9 mg/m³ under this condition.

Słowa kluczowe

EN

nitric oxide; cement production; ANSYS FLUENT; precalciner

PL

tlenek azotu; produkcja cementu; ANSYS FLUENT; prekalcynator

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Environment Protection Engineering
• Rocznik: 2023
• Tom: Vol. 49, nr 3
• Strony: 53--68
• Opis fizyczny: Bibliogr. 25 poz., rys., tab.

Twórcy

autor

Liang Ruru

• College of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China

autor

Yuan Guanglei

• College of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China

autor

Liu Renping

• College of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China

autor

Duan Erhong

• College of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China
• National Joint Local Engineering Research Center for Volatile Organic Compounds and Odorous Pollution Control, Shijiazhuang 050018, China

autor

Song Jiale

• College of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China

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