UNITHERM CEMCON

The Pneumo-Deflector

For the last two decades Unitherm Cemcon has implemented several tools in the burner to influence the distribution of solid recovered fuel (SRF) particles in the flame. For the total use of the combustion energy of the SRF, the residence time of the particles in the flame has to be maximized. This cannot be achieved by increasing the velocity of the SRF, but by changing the injection angle. According to the experience gathered from numerous of Mono Airduct System (M.A.S.) burner installations, an increase of the injection speed will not increase the retention time. Whereas a change of the injection angle by 5° will theoretically extend the trajectory and increases the available time for combustion in the flame by approx. 60 % (Fig. 1).

Due to the abrasive property of solid recovered fuel, a mechanical deflection of the particles is difficult to implement. Therefore Unitherm invented the Pneumo-Deflector. As the name suggests, the deflection of the particles is done pneumatically. Therefore a certain amount of air is led to the business end of the fuel pipe. This allows deflection of the SRF particles in an unprecedented way.

The combination of variable exit speed and angle allows any setting for optimum operation with alternative f­uels. The operation of the new device can be adjusted for varying fuel qualities (Fig. 2). Results of installations with the deflector show an essential increase in the thermal substitution rate (TSR) with constant clinker quality.

The Pneumo-Deflector can be found in all new M.A.S. burners. Also existing burners for alternative fuels can be retrofitted with this patented system.

www.unitherm.co.at

x

Related articles:

Joint office opening in China

A TEC, the Austrian specialist for pyroprocess optimization and consultancy in the cement industry, Unitherm Cemcon Feuerungsanlagen GmbH, one of the leading suppliers of firing systems for the...

more
Issue 2009-11

Joint office opening in China

A TEC, the Austrian specialist for pyroprocess optimization and consultancy in the cement industry, Unitherm Cemcon Feuerungsanlagen GmbH, one of the leading suppliers of firing systems for the...

more
Issue 2022-1 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...

more
Issue 2013-7-8

Fuel system to Ciments Calcia

Due to rising fuel oil costs ­Ciments Calcia, a member of Italcementi Group, decided to change their complete fuel system on the kiln burner at their plant in Couvrot (Dep. Marne/France). In...

more
Issue 2016-6 A TEC GRECO

IKN placed order for A TEC Greco Kiln Burner

A TEC Greco will deliver its Kiln Burner to HeidelbergCement’s plant at Burg­lengenfeld/Germany. The project will be realized by the end of 2016 and is part of a complete modernization of the plant...

more