TFD dispenser is a calcite dispenser, its primary task is to prevent explosion in the filter. The secondary task is to protect cartridges from rapid clogging in sticky and oil-saturated areas of application. The dispenser is placed on a flat pipe in front of the filter. At certain intervals calcite is inserted into the pipe and sprayed on the cartridges in the filter so that sticky fumes and particles do not stick to the cartridges but bind to calcite, which means longer life.