EP technology

Combustion experiment of NN OIL

Test site

Lime production plant
see the on-site pictures
To the manufacturer site for more information

To see the MAERZ KILN
The test kiln conditions
  • Combustion chamber volume : 140 m3
  • Air ratio : 0.7
  • Addition of water rate : 30 %

On site progress pictures

Test site - Lime production plant Date: 9 Feb 2013                     
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Progress report

The examination conditions are as follows.
  • Testing period : 1 Nov to 6 Dec 2012
  • Testing method :The CO, O2 measurement with the measuring instrument : "HT-1600" made in HODAKA CO., LTD.
  • Testing place :Smoke vent of test furnace and Comparison furnace in the Lime production plant
Test report The following results are the average value of December from Nov, 2012.
Classification CO(ppm)CO(%)O2(%)NOX (ppm)The air ratiogas temperature
Test furnace 65.55.813.378.52.859.8
Comparison furnace
Difference -51.5-1.2+1.5-0.6+0.5-3.4
Notice:Amount of carbon dioxide is not the absolute figures. It's the calculated value as below.
Calculating formula

air ratio(λ)

exhaust gas loss



O2 reduction CO

O2 reduction NOx

Fuel data
Type of fuel GO(Nm3)AO(Nm3)Calp(kcal/Nm3 or kg)CO2Max
Diesel Oil 11.911.1510280kcal/kg15.4
Bunker A 11.3710.6810160kcal/kg15.8
Bunker C 10.8810.259750kcal/kg16.0
GO: theoretical exhaust gas amount, AO: theoretical air capacity, Calp: low level calorific value,
CO2Max: maximum value of CO2 in each fuel
Since fuel data may have an error according to petroliferous area, therefore may the data computed by operation may influenced accordingly.


Opinion due to the measurement data as follows. The above-mentioned situation is considered to be the overoxidation and the cooling effect by excess intake air.