A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
VERFAHREN ZUR ENTSTICKUNG VON BYPASSABGASEN IN EINER ANLAGE ZUR HERSTELLUNG VON ZEMENTKLINKER
Denitrifying bypass exhaust gases in a cement clinker producing plant. The plant comprises a rotary kiln connected to a calciner for the deacidification of raw material or to a rotary kiln riser shaft via a rotary kiln inlet chamber, and the bypass exhaust gas being drawn off in the region of the rotary kiln inlet chamber. The method comprises: cooling the bypass gas to between 260 C and 400 C in a cooling device, injecting an ammonia-, urea-, and/or ammonium-containing substance into the cooled bypass gas, introducing the cooled and mixed bypass gas into a ceramic filter system to filter out any halide and sulfate of the alkali metals and alkaline-earth metals precipitated during cooling the gas, and any nitrogen not reacted by the injected substances is chemically selectively reduced over a catalytic converter which is located in or directly downstream of the ceramic filter system.
VERFAHREN ZUR ENTSTICKUNG VON BYPASSABGASEN IN EINER ANLAGE ZUR HERSTELLUNG VON ZEMENTKLINKER
Denitrifying bypass exhaust gases in a cement clinker producing plant. The plant comprises a rotary kiln connected to a calciner for the deacidification of raw material or to a rotary kiln riser shaft via a rotary kiln inlet chamber, and the bypass exhaust gas being drawn off in the region of the rotary kiln inlet chamber. The method comprises: cooling the bypass gas to between 260 C and 400 C in a cooling device, injecting an ammonia-, urea-, and/or ammonium-containing substance into the cooled bypass gas, introducing the cooled and mixed bypass gas into a ceramic filter system to filter out any halide and sulfate of the alkali metals and alkaline-earth metals precipitated during cooling the gas, and any nitrogen not reacted by the injected substances is chemically selectively reduced over a catalytic converter which is located in or directly downstream of the ceramic filter system.
VERFAHREN ZUR ENTSTICKUNG VON BYPASSABGASEN IN EINER ANLAGE ZUR HERSTELLUNG VON ZEMENTKLINKER
METHOD FOR THE DENITRIFICATION OF BYPASS EXHAUST GASES IN A PLANT FOR PRODUCING CEMENT CLINKER
PROCÉDÉ DE DÉNITRIFICATION D'EFFLUENTS GAZEUX DE DÉRIVATION DANS UNE INSTALLATION DE PRODUCTION DE CLINKER DE CIMENT
SCHÜRMANN HEIKO (author)
2019-08-21
Patent
Electronic Resource
German
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