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Goch GmbH & Co. KG Zum Ihnedieck 18 D - 44265 Dortmund Tel. +49 (0)231 - 46 50 50 Fax. +49 (0)231 - 46 50 588 E-Mail: [email protected] Internet: www.gogas.com Porous Burner RADIMAX for Paper Industry - June 2001 Page: 1 POROUS BURNER RADIMAX - for the Use in the Paper Industry 1. Problem In paper industry most of the paper machines use infrared burners for the drying of the coatings. However many machines run at their production limit, i.e. a slow drying process impedes an increase of production and efficiency. How can this problem be eliminated? 2. Solution In cooperation with the University Erlangen GoGaS developed a completely new concept for gas infrared burners. The combustion of the gas does not take place at the burner surface, as for conventional combustion, but in the centre of the burner. The principle is shown in fig. 1. Fresh gas mixture Combustion region Heat removal out of the reaction zone by radiation and conduction of the solid body as well as by convective heat transfer and dispersion Heat trasport for stabilization of the reaction zone Porous medium with large pore size (Region C) Exhaust gases Ignition temperature Preheating region Porous medium with small pore size (Region A) Heat transport in axial direction by radiation, conduction, dispersion, and convection Region A Region C Figure 1

GoGaS Expertise in infrared Paper drying Pourus burners

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Brochure about the usage of gas-infrared pourus burners in industrial drying processes.

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Page 1: GoGaS Expertise in infrared Paper drying Pourus burners

Goch GmbH & Co. KGZum Ihnedieck 18D - 44265 Dortmund

Tel. +49 (0)231 - 46 50 50Fax. +49 (0)231 - 46 50 588E-Mail: [email protected]: www.gogas.com

Porous Burner RADIMAX for Paper Industry - June 2001

Page: 1

POROUS BURNER RADIMAX - for the Use in the Paper Industry

1. Problem

In paper industry most of the paper machines use infrared burners for the drying of thecoatings. However many machines run at their production limit, i.e. a slow drying processimpedes an increase of production and efficiency. How can this problem be eliminated?

2. Solution

In cooperation with the University Erlangen GoGaS developed a completely new conceptfor gas infrared burners. The combustion of the gas does not take place at the burner surface,as for conventional combustion, but in the centre of the burner. The principle is shown in fig.1.

Fresh gas mixture

Combustion region

Heat removal out of the reaction zoneby radiation and conduction of thesolid body as well as by convectiveheat transfer and dispersion

Heat trasport for stabilizationof the reaction zone

Porous medium withlarge pore size

(Region C)

Exhaust gases

Ignitiontemperature

Preheating regionPorous medium withsmall pore size

(Region A)

Heat transport in axialdirection by radiation,conduction, dispersion,and convection

Region A

Region C

Figure 1

Page 2: GoGaS Expertise in infrared Paper drying Pourus burners

Goch GmbH & Co. KGZum Ihnedieck 18D - 44265 Dortmund

Tel. +49 (0)231 - 46 50 50Fax. +49 (0)231 - 46 50 588E-Mail: [email protected]: www.gogas.com

Porous Burner RADIMAX for Paper Industry - June 2001

Page: 2

By using this new combustion principle GoGaS could realize the manufacture of a burnerwith an extreme high thermal surface load. Compared to the conventional burners with athermal surface load of approx. 350 kW/m² and a constant temperature of 1100 °C theporous burner RADIMAX reaches a temperature of 1450 °C at a thermal surface load ofmore than 1000 kW/m².

RADIMAX at max. load on the testing stand

The mounting situation is shown in fig. 2.

A

Detail A

Figure 2

Page 3: GoGaS Expertise in infrared Paper drying Pourus burners

Goch GmbH & Co. KGZum Ihnedieck 18D - 44265 Dortmund

Tel. +49 (0)231 - 46 50 50Fax. +49 (0)231 - 46 50 588E-Mail: [email protected]: www.gogas.com

Porous Burner RADIMAX for Paper Industry - June 2001

Page: 3

3. Advantages

The porous burner RADIMAX stands out against comparable products of our competitorsdue to the following characteristics:

• Thermal surface load 1000 kW/m²

• Temperature 1450 °C

• Wide range of control (1:6)

• Combustion with low emission

• Constant λ for complete range of control

• Compatible to all systems, i.e. quick and simple exchange

• Safe ignition and control system

4. Benefits

The use of the porous burner RADIMAX shows the following profits:

• Increase of evaporation capacity of existing lines without modification

• Low spare parts costs

• Increased production

• Smaller space requirement for new plants