| 摘要 |
To cool and moisten dust- containing gases, such as waste gases from furnaces and boilers, water is sprayed into the gas from a spray nozzle opening (2), an enveloping jet of compressed dust-free gas being formed around the water droplets issuing from the nozzle opening (2) by the supply of compressed air or gas to outer duct (6'), whereby the droplets can evaporate before coming into contact with the dust-containing gas, and whereby the tendency for sludge formation is reduced. A spraying agent such as steam or compressed gas may be supplied through an intermediate duct (3'), both gas supplies being caused to swirl by means (4, 8). The water spray nozzle may be of the return-flow type. <IMAGE> |
