EP 2984054 A1 20160217 - METHOD FOR OPERATING A PLANT FOR PRODUCING CEMENT
Title (en)
METHOD FOR OPERATING A PLANT FOR PRODUCING CEMENT
Title (de)
VERFAHREN ZUM BETRIEB EINER ANLAGE ZUR HERSTELLUNG VON ZEMENT
Title (fr)
PROCÉDÉ POUR FAIRE FONCTIONNER UNE INSTALLATION SERVANT À FABRIQUER DU CIMENT
Publication
Application
Priority
- DE 102013006237 A 20130411
- EP 2014056777 W 20140404
Abstract (en)
[origin: WO2014166822A1] The invention relates to a method for operating a plant (1) for producing cement clinker from raw meal (2) having, as viewed in the materials flow direction, at least one calciner (3) for deacidifying the raw meal (2), and at least one rotary kiln (4) for sintering the deacidified raw meal (2) to form cement clinker (5), where the deacidified raw meal (2), after passing through the calciner (3), flows via a cyclone preheating stage (1.4) into the rotary kiln (4). The method according to the invention is distinguished by guiding of exhaust gases (6) from the rotary kiln (4) into a reactor (7), which is arranged between rotary kiln (4) and calciner (3), with fuel (8) being fed into the reactor (7) superstoichiometrically in relation to the dwell time of the exhaust gases (6) in the reactor (7), so that carbon dioxide (CO2) contained in the exhaust gases (6) is reduced to form carbon monoxide (CO). The carbon monoxide (C=) is used as a reducing agent for nitrogen oxides (NOx), which are chemically reduced in the reactor (7) independently of the short dwell time in the calciner (3).
IPC 8 full level
CPC (source: EP US)
C04B 7/364 (2013.01 - EP US); C04B 7/365 (2013.01 - US); C04B 7/432 (2013.01 - US); C04B 7/4446 (2013.01 - EP US)
Citation (search report)
See references of WO 2014166822A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DE 102013006237 A1 20141016; DE 102013006237 B4 20160616; CN 104350022 A 20150211; CN 109516702 A 20190326; EP 2984054 A1 20160217; JP 2016522133 A 20160728; JP 6366679 B2 20180801; US 10479727 B2 20191119; US 2016039714 A1 20160211; WO 2014166822 A1 20141016
DOCDB simple family (application)
DE 102013006237 A 20130411; CN 201480001142 A 20140404; CN 201811538602 A 20140404; EP 14716778 A 20140404; EP 2014056777 W 20140404; JP 2016506856 A 20140404; US 201414782400 A 20140404