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1972年勃拉齐(Brazi)电厂二台配有辅助循环锅炉的20万瓩机组投入运行。辅助循环(或称强制循环)锅炉是为了消除自然循环蒸发系统中的故障而发展起来的。发展具有循环泵锅炉的另一个原因,是使锅炉在自然循环下能达到最高的压力,如要求压力为165公斤/厘米~2,此时的汽包压力最大将达185公斤/厘米~2,这就要求增大蒸发管径和增加锅炉高度。而大容量锅炉上提高蒸汽压力又是提高机组经
In 1972, two 200,000 units with auxiliary circulation boilers were put into operation at the Brazi plant. Auxiliary (or forced circulation) boilers are developed to eliminate problems in natural circulation evaporation systems. Another reason for the development of a circulating pump boiler is that the boiler can reach the highest pressure under natural circulation. If the required pressure is 165 kg / cm ~ 2, the maximum drum pressure will reach 185 kg / cm ~ 2 at this time, This requires increasing the evaporation pipe diameter and increasing the boiler height. The large-capacity boiler to improve steam pressure is to improve the unit by