US 2021/0339192 A1
A method and apparatus for reduction of HCl emission from cement plants using cement raw meal as absorber
(22) 29.08.2019
(43) 04.11.2021
(57) The invention relates to a method for reduction of HCl emission from a cement plant based on a treatment of a preheater (1) and/or bypass gas stream, characterized in that a cement raw meal, as a HCl absorber, is dispersed in the gas stream(s) from which HCl is to be removed; the cement raw meal is introduced from a raw mill (6) and/or a silo (8) into a pipe with a up going gas flow; the pipe being arranged in fluid communication at a point after a gas conditioning tower (7) and/or before a particle filter unit (5) and/or in a by-pass line before particle filter (4).
(71) FLSmidth A/S, Valby (DK)
