日本サムソソ有限公司开发了一种高效率、低 NO_x 型多管式无汽包燃气锅炉。这种锅炉主体的热效率达到90%,NO_x 下降率可达到50%以上。一、构造1、本体构造锅炉本体是由带状排列的带圆弧形突起的特殊水管组成。如图1所示,在环状的上、下联箱间分内外两层排列了许多根水管。内侧水管与外侧水管用鳍片连在一起。燃烧产生的高温烟气沿着由水管和鳍片 Japan’s Sousam Soto Co., Ltd. has developed a high efficiency, low NO_x multi-tube steam-free gas boiler. The main thermal efficiency of the boiler reached 90%, NO_x rate of decline can reach more than 50%. First, the structure 1, the body structure The boiler body is composed of a strip of special arrangement with a circular arc-shaped protrusions. As shown in Fig. 1, a number of water pipes are arranged between the inner and outer layers of the annular upper and lower headers. The inner water pipe and the outer water pipe with the fin together. The high temperature flue gas generated by the combustion is followed by water pipes and fins