纽约州布法罗地区的一家大型制造企业就空气污染控制装置联系了作者的公司。因为他们的“砂炉”废气。这些烟雾是由用于固化陶瓷材料的熔炉产生的。该炉排出的高温废气中含有氟化氢气体和极细颗粒。氟化氢气体和粉尘都需要控制，以达到国家空气污染标准。引文:德克萨斯州休斯顿ASHRAE学报第88卷第1部分研讨会

A large manufacturing concern in the Buffalo, NY area contacted the author's company concerning an air pollution control device.for their "grit furnace" exhaust fumes. These fumes are produced by a furnace used to cure a ceramic type material. The hot exhaust gases from -this furnace contain hydrogen fluoride gas as well as extremely fine particles. Both the hydrogen fluoride gas and the dust needed to be controlled to meet state air pollution standards.