Apparatus for injecting a chemical upstream of an inline mixer

An inline mixer and process pipe combination having an inline mixer with a casing and a rotor arranged therein, the casing having one or more stationary vanes and an inlet connected to a process pipe configuration, the rotor having one or more rotary vanes that rotate on an axis of rotation in the casing, characterized in that

• the process pipe configuration includes a slotted injection pipe arranged therein having a connection for receiving a chemical to be injected into a process flow media, and having an outer surface with a long narrow slot therein oriented substantially parallel to the axis of rotation of the rotor for injecting the chemical into the process flow media flowing in the process pipe configuration, the slotted injection pipe protruding through the process pipe configuration with the connection at either or both ends for receiving the chemical.