Q: G.K. Gautam, IFFCO India
Whether reformers balancing have taken into consideration the gas distribution pattern in
furnace box?
A: The furnace balancing effort discussed in the paper was undertaken by identifying hot and
cold areas of the furnace through Reformer Imager temperature measurement. Operations
then made slight burner and fuel gas adjustments to decrease or increase temperatures in
certain regions or rows. No additional modeling was done to determine gas distribution
within the furnace box and how it might be affecting the temperatures in these regions.
Q: Peter Tait, Methanex, New Zealand
Do you compensate for the cooling effect of the air entering the sightport?
A: When utilizing the Reformer Imager to take tube measurements, the temperature
measurements can be captured within a 10 second or less time frame. This time includes
opening the peep door, taking the measurements, and closing the peep door; therefore
minimizing the amount of air entering the sightport and the need to account for any cooling
effects.
Q: Nabil Al-Naimi, SAFCO, Saudi Arabia
Was there compression done between this new measuring device and cup measurement?
A: The Reformer Imager temperature measurements require correction to determine true tube
wall temperature, therefore a comparison of temperatures with Gold Cup Thermocouple
measurements cannot be done until after temperature corrections are made to the
temperatures measured with the Reformer Imager. With that being said, field comparisons
have been done between the two devices and it has been found that after temperature
correction, the tube temperatures measured with the Reformer Imager do compare well
against those measured with the Gold Cup Thermocouple.
Q: Omar M. Takrouri, SABIC, Saudi Arabia
What is the time span required to do reformer thermal imaging?
A: The time span required to take a full set of temperature measurements for a furnace will be dependent on furnace size, but overall can be accomplished very quickly. For example a full temperature survey can be completed in an hour or less for a 400 tube furnace with measurements taken at all top and bottom level peep doors.
Whether reformers balancing have taken into consideration the gas distribution pattern in
furnace box?
A: The furnace balancing effort discussed in the paper was undertaken by identifying hot and
cold areas of the furnace through Reformer Imager temperature measurement. Operations
then made slight burner and fuel gas adjustments to decrease or increase temperatures in
certain regions or rows. No additional modeling was done to determine gas distribution
within the furnace box and how it might be affecting the temperatures in these regions.
Q: Peter Tait, Methanex, New Zealand
Do you compensate for the cooling effect of the air entering the sightport?
A: When utilizing the Reformer Imager to take tube measurements, the temperature
measurements can be captured within a 10 second or less time frame. This time includes
opening the peep door, taking the measurements, and closing the peep door; therefore
minimizing the amount of air entering the sightport and the need to account for any cooling
effects.
Q: Nabil Al-Naimi, SAFCO, Saudi Arabia
Was there compression done between this new measuring device and cup measurement?
A: The Reformer Imager temperature measurements require correction to determine true tube
wall temperature, therefore a comparison of temperatures with Gold Cup Thermocouple
measurements cannot be done until after temperature corrections are made to the
temperatures measured with the Reformer Imager. With that being said, field comparisons
have been done between the two devices and it has been found that after temperature
correction, the tube temperatures measured with the Reformer Imager do compare well
against those measured with the Gold Cup Thermocouple.
Q: Omar M. Takrouri, SABIC, Saudi Arabia
What is the time span required to do reformer thermal imaging?
A: The time span required to take a full set of temperature measurements for a furnace will be dependent on furnace size, but overall can be accomplished very quickly. For example a full temperature survey can be completed in an hour or less for a 400 tube furnace with measurements taken at all top and bottom level peep doors.
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