公开(公告)号：US20200207661A1

公开(公告)日：2020-07-02

申请号：US16643190

申请日：2018-08-29

Applicant: FLSmidth A/S

Inventor： Damien Grévain ,  Mads Nielsen

IPC: C04B7/36 ,  C04B7/44 ,  F27B1/00 ,  B01D53/56 ,  B01D53/79

Abstract: A system for reducing NOx emission levels during the manufacture of cement clinker having a calciner unit with the following features: an upper portion; a lower portion; a NOx reduction zone in the lower portion; a tertiary air inlet in the upper portion for introducing tertiary air into the upper portion; a main calciner meal inlet located above the NOx reduction zone for introducing a main calciner meal portion into the upper portion; a first cooling calciner meal inlet located in the NOx reduction zone for introducing a first cooling calciner meal portion into a periphery of the NOx reduction zone; and a fuel inlet located in or below the NOx reduction zone for introducing fuel into the reduction zone.

公开(公告)号：US10974992B2

公开(公告)日：2021-04-13

申请号：US16643190

申请日：2018-08-29

Applicant: FLSmidth A/S

Inventor： Damien Grévain ,  Mads Nielsen

IPC: C04B7/36 ,  B01D53/56 ,  B01D53/79 ,  C04B7/44 ,  F27B1/00

Abstract: A system for reducing NOx emission levels during the manufacture of cement clinker having a calciner unit with the following features: an upper portion; a lower portion; a NOx reduction zone in the lower portion; a tertiary air inlet in the upper portion for introducing tertiary air into the upper portion; a main calciner meal inlet located above the NOx reduction zone for introducing a main calciner meal portion into the upper portion; a first cooling calciner meal inlet located in the NOx reduction zone for introducing a first cooling calciner meal portion into a periphery of the NOx reduction zone; and a fuel inlet located in or below the NOx reduction zone for introducing fuel into the reduction zone.