This work was involved in the low NOx combustion technology for the large capacity utility boilers, a set of low NOx pulverized coal combustion approaches have been developed in this work by the means of experiments, numerical simulation and field tests.

Working mechanism of drum water level measuring device for large capacity utility boiler is introduced, and reason for different indicated values in local water gage, electrode water column gage and differential pressure water level meter are analyzed.

On the basis of the analysis on the various calculation methods of flue gas temperature deviation and steam temperature deviation in large capacity utility boilers, a new calculation method of flue gas temperature deviation and steam temperature deviation is proposed.

In this article the method of calculation of flow deviation in the complex superheater connection systems frequently used in conventional large capacity utility boilers is given.

In this article the method of calculation of flow deviation in the complex superheater connection systems frequently used in conventional large capacity utility boilers is given. The said complex systems include: (1 )the superheater arrangement in which the entire superheater system is divided into two paths and the superheated steam leaves at one end of the main header of the two paths, and ( 2 ) those in which the method of lead-in and lead-out of the superheater tube banks does not belong to the typical...

In this article the method of calculation of flow deviation in the complex superheater connection systems frequently used in conventional large capacity utility boilers is given. The said complex systems include: (1 )the superheater arrangement in which the entire superheater system is divided into two paths and the superheated steam leaves at one end of the main header of the two paths, and ( 2 ) those in which the method of lead-in and lead-out of the superheater tube banks does not belong to the typical "Z", "U" or "L" arrangement, but instead several steam leads are arranged for lead-in and lead-out at the middle of the headers. Finally a simplified nornogram for the calculation of flow d2\'iation in typical systems of header arrangement is obtained with the help of a digital computor and presented in the paper.

Working mechanism of drum water level measuring device for large capacity utility boiler is introduced, and reason for different indicated values in local water gage, electrode water column gage and differential pressure water level meter are analyzed. The authors determine the indication deviatons for each type of water gag by measuring drum water level, which provides basis for safe operation of boiler.

On the basis of the analysis on the various calculation methods of flue gas temperature deviation and steam temperature deviation in large capacity utility boilers, a new calculation method of flue gas temperature deviation and steam temperature deviation is proposed. The comparison between the calculating results and thermal experimental results shows that the calculation methods have enough accuracy and can be applied in the practical design and operation of superh-eater and reheater systems in large...

On the basis of the analysis on the various calculation methods of flue gas temperature deviation and steam temperature deviation in large capacity utility boilers, a new calculation method of flue gas temperature deviation and steam temperature deviation is proposed. The comparison between the calculating results and thermal experimental results shows that the calculation methods have enough accuracy and can be applied in the practical design and operation of superh-eater and reheater systems in large capacity utility boilers.