Littleford Dryers Go Beyond One Function

The versatility and economies of a Littleford Ploughshare Dryer result from its ability to do more than just effectively dry materials. For example, when specific process needs dictate, a Littleford Ploughshare Dryer can perform efficient homogeneous mixing prior to, during, or after the drying process.

Optionally available add-ons can increase its versatility and economy even further. These include:

The Littleford patented Filtorr® liquids-solids separator, which facilitates washing the extracting prior to the drying process. The internally mounted Filtorr® allows the consecutive processing steps of mixing, reacting, filtering, washing, and drying – all carried out in a single process vessel instead of in the several process vessels previously required.

Pulse Back Filters can be added to effectively handle the vapor stream created during drying. In a typical application, a Pulse Back Filter is used to filter the vapor stream from the dryer in order to prevent product carry-over into the condenser. The filter is heated slightly higher than the dew point of the vapor, thus preventing condensation. The filter housing is constructed of material to meet customers’ specifications and is equipped with a removable head and an ASME code constructed jacket. Filter bags of proper porosity are mounted over stainless steel cages and can easily be removed through the top section of the filter housing. A pneumatic pulse jet system provides continuous automatic bag cleaning down through a venture at the top of the bag. Since this pneumatic shock wave clears only one row of bags at a time, there is no interruption of vapor flow through the filter. This provides a smoothly operating dust control system.