Key factors to minimise emissions from parallel flow regenerative lime kilns

Emission reduction is a significant topic in the lime industry. This article concentrates on NOx formation in PFR lime kilns, as these kilns provide the highest thermal efficiency of all kiln types. It goes on to share with its readers the conclusions drawn from years of research and development by Maerz Ofenbau AG, on how to reduce NOx formation, thereby minimising emissions and contributing to a healthier environment.

1 Introduction

Directive 2010/75/EU of the European Parliament, adopted on November 24th, 2010, lays down rules for EU member states on the integrated prevention and control of pollution arising from industrial activities. Member states are obliged to take the necessary measures to ensure that no installation, in this case no lime kiln, is operated without a permit. Germany incorporated the IED (Industrial Emissions Directive) 2010/75/EU into national law (BlmSchG) in May 2013. Other EU member states have reached an equivalent status and are currently implementing the IED into their respective...

Related articles:

Issue 2019-3 WO 2018/231043 A1

Pressurised kiln for calcinating limestone sands using an underground internal combustion chamber

(22) 12.06.2018 (43) 20.12.2018 (57) The present invention relates to a kiln for calcinating limestone and dolomitic sands to obtain quicklime (CaO). The invention also relates to a system for...


A single shaft Maerz HPS kiln for Schaefer Kalk Malaysia

Schaefer Kalk GmbH & Co. KG, the renowned German lime manufacturer, has been operating a major lime plant in Kuala Ketil, a small town in North Malaysia’s Kedah province since 1997. As is typical for...


The Maerz hybrid kiln for variable lime reactivity

1 Introduction The development of modern lime kilns to date has been focusing on the optimisation of the specific heat consumption as well as on the flexibility to use a wide variety of fuels. Little...

Issue 2016-1-2 GEBR. PFEIFFER SE

MPS mill for quicklime grinding

Nirma Ltd., a manufacturer of soap, detergents and dishwasher tabs for the consumer sector and of primary products for the industry, has a chemical factory installed at Bhavnagar/India producing soda....

Issue 2019-4 RU 2 677 724 (C1)

Method of obtaining lime

(22) 06.04.2018 (45) 21.01.2019 (57) Field: construction. Substance: invention relates to the construction industry and can be used in the production of lime by burning limestone in special kilns....