Drying process KENKI DRYER / Sludge dryer, Slurry dryer, Heat pump sludge dryer

KENKI DRYER which can dry sticky and adhesive materials that no other dryer can is an innovative drying apparatus having unique technologies with 2 patents in Japan, 9 patens in 7 abroad countries, 11 patents in total.  Please consider about KENKI DRYER as dryer for organic waste with high moisture content, sludge dryer, slurry dryer, dryer for digestive fluid from the methane fermentation and waste recycling dryer.
It has 11 patents in 8 countries which are Japan, Taiwan, the Unites States, France, Germany, the United Kingdom, Swiss and Canada.
Since amount of saturated steam used as heat source of KENKI DRYER is small, there is no need for installing new boilers, and decarbonization and fuel cost reduction is possible by using redundant steam from the plants.

KENKI DRYER is a continuous type low temperature drying device using saturated steam as its heat source.
Saturated steam is supplied to KENKI DRYER from boiler which is steam generating apparatus.
Steam is supplied to each part of the dryer and materials to be dried are heated and dried by the steam indirectly. Steam is condensed into water by steam traps after it heats and dried the materials.
The condensed water is used in boiler after being collected and cost of fuel and water can be reduced.

The materials are fed by feeding device and they are crashed and heated while being conveyed to dryer’s main body.
Inside of dryer’s body, the materials move forward as they are being agitated, crashed, heated and dried.

Blade attached inside of the dryer is patented and even the materials adhere to the blades, the materials are peeled off by the blade set in the opposite side while the blades rotate and clogging never occurred.

Air inside the dryer is drawn out by circulating blower and returned to the dryer’s body as being heated by heat exchanger. Air inside the dryer is in cyclic heating flow and drying process is improved by hitting the heated air on the materials.
Since no air from outside is mixed, temperature inside of dryer is kept constant and not affected by temperature outside.
This hot-air heating is an innovative structure and patented together with the indirect drying.

Wet air in the dryer’s body is discharged to outside by exhaust blower.

Structure is simple and rarely broke, and operation is easy.
Continuous operation is possible for 24 hours and no staff need to attend there.

Four drying mechanisms KENKI DRYER / Sludge dryer, Slurry dryer, Heat pump sludge dryer

Why do we dry sludge which is difficult to be treated? / Sludge dryer, Slurry dryer, Heat pump sludge dryer

The unique and original drying mechanism of KENKI DRYER is also International Patented Technology. Because 4 drying mechanisms which are crashing drying, agitation drying, circulation drying and indirect drying work simultaneously and add heat to material being dried repeatedly and continuously, inner part of the material is dried thoroughly and quality of discharged material after drying is stable. This series of drying mechanisms prevents agglomeration which causes insufficient drying from feeding process of the material into the dryer until discharging process after drying completed. Various ingenuities to conduct heat surely into inner part of the materials are exercised and stable heating and drying are proceeded continuously.

Methods

One of the International Patented Technology that KENKI DRYER has is a self-cleaning structure called Steam Heated Twin Screw technology (SHTS technology). No matter how materials are sticky, adhesive and viscous is, they can be dried without clogging inside of the dryer because of this unique structure that no other products has.
For example, even materials stuck to the blades of one screw, blades of the other screw in the dryer’s body forcibly peels the materials off as they rotate. Since the blades rotate by peeling the material off each other, any sticky, adhesive and viscous material does not adhere to the blade, and the blades continue rotating, peeling, agitating and heating material without stopping while they carries material further. Also, since surface of blades are always renewed and kept clean, heat near the blades is not blocked and it is conducted directly into the materials.

Self-cleaning screw

Even KENKI DRYER uses only saturated steam as its heat source, it is outstanding in safety and hygiene point of view with its unique drying mechanism based on combined use of conductive heat transfer method and heated air method. Since steam is a stable heat source, quality of discharged material after drying is also stable and equable. Maximum allowed steam pressure is 0.7Mpa and adjustment of steam pressure, adjustment of drying temperature in other words, can be easily done. Saturated steam is commonly used in many factories so that it can be said as a familiar and handy heat source. In comparison with drying methods using burner or hot blasts, saturated steam method is an indirect drying applying heat exchange via pipes that steam is passing through, therefore, it hardly burns the materials and is outstanding in safety and hygiene point of view.

Heat source, Steam

No matter how sticky, adhesive and viscous the material is, KENKI DRYER of International Patent can dry it without clogging inside of dryer and with stable operation that no operational trouble occurs because of its unique mechanism. For example, even materials stuck to the blades of one screw, blades of the other screw in the dryer’s body forcibly peels the materials off as they rotate. Since the blades rotate by peeling the material off each other, any sticky, adhesive and viscous material does not adhere to the blade, and the blades continue rotating, peeling, agitating and heating material without stopping while they carries material further. Also, since surface of blades are always renewed and kept clean, heat near the blades is not blocked and it is conducted directly into the materials.

Sludge drying