NOx emissions from cement manufacture and evaluation of various possibilities for NOx reduction in the cement industry

Objective

To study NOX emission reduction by use of low NOX burners, by the introduction of NH3 or ammonia water in the preheater/precalciner (SNCR process) and by staged combustion in the precalciner where the utilization of primary and secondary fuels will be tested.


The research project can be divided into the following subsectors :

1. Evaluation of the differences in NOX emission from selected cement plants;

2. primary NOX reduction methods;

3. SNCR Process (Selective Non-Catalytic Reduction);

4. staged combustion in the precalciner.


The investigations on the SNCR processes will be carried out at a normal rotary kiln with cyclone preheater and at a kiln system with cyclone preheater, precalciner and tertiary air duct.

Programme(s)

• FP3-ENV 1C - Specific research and technological development programme (EEC) in the field of the environment, 1990-1994

Topic(s)

• 0202 - Technologies for protecting and rehabilitating the environment

Funding Scheme

CSC - Cost-sharing contracts

Coordinator

VEREIN DEUTSCHER ZEMENTWERKE E.V.

Address

Tannenstrasse 2
40476 Duesseldorf
Germany

Participants (3)

Centro Tecnico di Gruppo

Italy

Address

Via G. Camozzi 124
24121 Bergamo

Italcementi SpA

Italy

Address

Via Camozzi 124
24121 Bergamo

Norcem AS

Norway

Address

3950 Brevik