21121956
Mechanical
- Jul 29, 2005
- 420
Hello everybody:
This is a continuation of thread481-133409 of September 2005.
Approximately four months ago, two fuel mills were installed in one of the two sections of our power plant.
The performance of these equipments is still under observation, but so far, we can see several interesting results like these:
1. Large particles, a mixture of brownish, non-metallic crusty material and a few fiberous material, are in the 200-250 micron range at the inlet of the fuel mill and, in a sample taken in the outlet of the fuel mill shows particles with a size of around 30 microns. We say particles because we do not know, certainly, if they are asphaltenes, or a combination of free carbon and contaminants.
2. If we call section A to the machine hall supplied by the fuel mills and section B the other one (without fuel mills), some failures during January and February 2006 were, for section A: cylinder heads 2, fuel injection pumps 10 and fuel injectors 16. For section B the values were 9, 16 and 17 respectively.
3. From emissions tests achieved at the end of April 2006, for section A: Stack temperature 253ºC, oxygen 12.0 %,CO 75 ppm, CO2 7.1%, HC 47 ppm, NO 706.5 ppm, NO2 89.8 ppm, NOx 796 ppm and SO2 201 ppm. Oxygen reference 15%.
For section B the results were: stack temperature 193ºC, oxygen 12.6%, CO 260 ppm, CO2 6.9%, HC 187 ppm, NO 552.2 ppm, NO2 39.7 ppm, NOx 592 ppm and SO2 198 ppm. Oxygen reference 15%.
As stated above, these equipments are almost a new acquisition, so, there is a lot we got to know about them.
I will be in contact with the forum.
This is a continuation of thread481-133409 of September 2005.
Approximately four months ago, two fuel mills were installed in one of the two sections of our power plant.
The performance of these equipments is still under observation, but so far, we can see several interesting results like these:
1. Large particles, a mixture of brownish, non-metallic crusty material and a few fiberous material, are in the 200-250 micron range at the inlet of the fuel mill and, in a sample taken in the outlet of the fuel mill shows particles with a size of around 30 microns. We say particles because we do not know, certainly, if they are asphaltenes, or a combination of free carbon and contaminants.
2. If we call section A to the machine hall supplied by the fuel mills and section B the other one (without fuel mills), some failures during January and February 2006 were, for section A: cylinder heads 2, fuel injection pumps 10 and fuel injectors 16. For section B the values were 9, 16 and 17 respectively.
3. From emissions tests achieved at the end of April 2006, for section A: Stack temperature 253ºC, oxygen 12.0 %,CO 75 ppm, CO2 7.1%, HC 47 ppm, NO 706.5 ppm, NO2 89.8 ppm, NOx 796 ppm and SO2 201 ppm. Oxygen reference 15%.
For section B the results were: stack temperature 193ºC, oxygen 12.6%, CO 260 ppm, CO2 6.9%, HC 187 ppm, NO 552.2 ppm, NO2 39.7 ppm, NOx 592 ppm and SO2 198 ppm. Oxygen reference 15%.
As stated above, these equipments are almost a new acquisition, so, there is a lot we got to know about them.
I will be in contact with the forum.
