METHOD AND APPARATUS FOR FEEDING CHEMICAL INTO A LIQUID FLOW

摘要

The present invention relates to a method and apparatus for feeding chemical into a liquid flow by means of a feeding device (34) including a nozzle casing (80) and apparatus (84, 88, 144) disposed in connection therewith, having means (162) for feeding chemical and means (142) for feeding mixing liquid to an isolated space (154) disposed in connection with the nozzle casing. The method and apparatus according to the invention are especially suitable for applications where very small volumes of chemical must be fed in precise amounts in large process liquid flows.