最近美国的Kaldait公司设计出一种新型火炬——Stedair火炬。与传统的火炬相比,其燃烧具有安全、经济、无烟、噪音低等优点。其火炬头的设计巧妙地利用了Coanda效应(即附壁效应),可以使大量空气充分地预混入瓦斯气流,从而使火炬燃烧完全。它主要是在火炬囱口处的外围设计了一同轴环形夹套,蒸汽通入环形夹套内,从其上沿的环形缝口沿囱壁向上喷入焰区,借其抽力,可使混入瓦斯流的空气 Recently, the United States, Kaldait company designed a new torch - Stedair torch. Compared with the traditional torch, the combustion is safe, economical, smoke-free, low noise and other advantages. The design of the flare tip cleverly exploits the Coanda effect (ie, the Coanda effect), which allows a large amount of air to be thoroughly premixed into the gas stream, thereby burning the torch completely. The utility model mainly designs a coaxial annular jacket at the periphery of the torch chimney. The steam passes into the annular jacket and is sprayed into the flame zone along the chimney from the annular slit along the chimney. By means of pumping, Air mixed into the gas stream