WO 2021/198571 A1

A method for reducing combustion
temperature and thermal radiation within a lime kiln

(22) 05.04.2021

(43) 07.10.2021

(57) A method for reducing combustion temperature and/or thermal radiation within a lime kiln of a pulp production plant, which kiln is a rotary kiln having a kiln tube (1) internally covered with refractory tiles (13) and having a burner (2) supplied by fuel for heating of the rotary kiln by a flame (3). The effects are achieved by supplying calcium carbonate containing particles to the flame (3) and/or to surrounding area around the flame (3). Preferably the particles are supplied into the rotary kiln by at least one lance (9) to the upper part of the flame (3). Calcium oxide containing particles may be supplied to the rotary kiln to areas surrounding the flame (3) for reducing the thermal radiation, preferably to area over the flame (3) and/or to the area at the side of the flame (3), where the refractory tiles (13) of the kiln are rotating downwards.

(71) Andritz Oy, Tammasaarenkatu 1, 00180 Helsinki (FI)

x

Related articles:

Issue 2019-4 PL2681170 (T3)

Method and arrangement for burning lime mud

(22) 23.02.2012 (43) 31.01.2019 (57) Summary of the corresponding patent WO2012117159 (A1): The present invention relates to a method and an arrangement for burning lime mud into lime in a lime kiln....

more
Issue 2017-10 PL1957423 (T3)

Method and apparatus for treating lime mud

(22) 21.11.2006 (43) 30.06.2017 (57) Summary of corresponding patent WO2007057512 (A2): A method for feeding lime mud into a lime kiln including a rotary kiln shell having an interior between a first...

more
Issue 2017-12 US2017291851 (A1)

Method and arrangement for burning lime mud

(22) 09.05.2017 (43) 12.10.2017 (57) An arrangement for burning lime mud into lime in a lime kiln. The lime mud flows counter-currently to flue gases from a feed end to a firing end and the fuel used...

more
Issue 2018-7-8 WO 2018/076403 A1

One-dimensional simulation method for predicting quality of clinker in rotary cement kiln

(22) 11.11.2016 (43) 03.05.2018 (57) A one-dimensional simulation method for predicting calcination quality of clinker in a rotary cement kiln, the method comprising: (1) acquiring relevant...

more
Issue 2022-6 WO 2022/148906 A1

Method and system for flame monitoring and control

(22) 04.01.2021 (43) 14.07.2022 (57) A method for monitoring a flame of a burner of a lime kiln, comprising imaging a video stream showing the burner end of the lime kiln; extracting at least one...

more