Slurry Raw materials drying, Low-temperature drying of strongly sticky and adhesive slurry raw materials that is difficult to dry / Test cases / Slurry dryer, Raw materials dryer

Summary

Low-Temperature Drying of Sticky Slurry Materials:
KENKI DRYER specializes in drying highly adhesive and sticky slurry materials that other dryers cannot handle.
Operates without clogging, even for liquid or high-moisture content materials.

Unique Drying Technology:
Uses a patented combination of conduction heat transfer and hot air for efficient and uniform drying.
Heat source: saturated steam, ensuring low-temperature drying with minimal changes in material composition.

Environmentally Friendly:
Emits no carbon dioxide when using steam or alternative clean heat sources (e.g., electric or hydrogen boilers).
Aligns with decarbonization efforts.

Efficient and Cost-Effective:
Low steam consumption and no fuel costs when utilizing surplus steam.
Minimal wear and tear due to low blade rotation speed (≤5 RPM), reducing maintenance costs.

Continuous, Unattended Operation:
Capable of 24-hour operation without manual labor, unlike batch systems.
Improves productivity and simplifies management.

International Patents and High Customer Satisfaction:
Holder of 11 patents across 8 countries (Japan, Taiwan, USA, France, Germany, UK, Switzerland, Canada).
Recognized for its high performance, durability, and uniform drying.

Versatile Applications:
Suitable for drying various materials, including organic waste, sludge, methane fermentation digestate, and materials for recycling or upcycling.

Even when drying raw material slurry, KENKI DRYER, which has already been granted an international patent, can demonstrate its full potential. Even if the material is highly adhesive or sticky, it will not clog the dryer and can be dried without problems even if it is in liquid form, allowing stable operation. Since saturated steam is used as the heat source and drying is performed at low temperatures, the components of the material being dried do not change and the material can be dried evenly, so there are no problems at all in drying the material. The heat source for drying in KENKI DRYER is only saturated steam. It uses a revolutionary drying method that combines conduction heat transfer and hot air, and is superior in terms of safety and hygiene. It is also able to dry the inside of the drying object to a sufficient degree thanks to its internationally patented technology, and after drying, it is discharged in a very stable and uniform state. It can operate unattended for 24 hours without the need for manual labor. If you replace your conventional box-type shelf drying system with KENKI DRYER, you will find that drying becomes much easier and you will be freed from the tedious task of drying.

Even if the material to be dried has strong adhesion or stickiness and is difficult to dry, KENKI DRYER can dry it easily and evenly. Depending on the type of dryer, slurry materials with strong adhesion or stickiness may become clogged during drying and may not be able to be dried. KENKI DRYER uses a unique mechanism, which is patented worldwide, to enable the smooth drying of any slurry with high adhesion or stickiness, even if it has a high moisture content, without clogging inside the dryer.

KENKI DRYER dries at low temperatures, so there is little change in the components of the material being dried, making it completely safe to use for drying raw materials. After drying, there is little change in the components of the material being dried, so it can be shipped as a finished product. In addition, after drying, the material to be dried is evenly dried, so a stable product can be produced.

KENKI DRYER, which has 11 patents in 8 countries, is an indirect steam dryer, but it is a completely unique product with a different structure from other indirect steam dryers. Direct-fired dryers, which use burners, etc., emit carbon dioxide, which is bad for the environment and goes against the trend of decarbonization. KENKI DRYER uses steam as its heat source, but because the drying heat efficiency is good, the amount of steam used is small, so you can use the steam you currently use, and if you use excess or surplus steam, there is no fuel cost, and when drying, no carbon dioxide is emitted from the dryer, so you can dry without carbon dioxide. Alternatively, by installing electric boilers or hydrogen fuel boilers, there is no generation of global warming gases or carbon dioxide CO2 at all during drying.
In addition, there are no problems after start-up, and the rotation speed of the dryer’s main body blades is very slow at 5 RPM or less, so there is little wear and tear on parts, making maintenance easy and inexpensive. The KENKI DRYER is a continuous drying system that stores the product to be dried and is not a batch system. As a result, it is easy to manage and can operate unattended 24 hours a day. No human labor is required to install KENKI DRYER.

If you have any questions or concerns, please let us know. We will be happy to suggest the best dryer for your company’s needs.
Our dryer “KENKI DRYER” has obtained 11 patents in 8 countries and is good at drying sticky materials that others cannot dry, has no problems after installation, is easy to maintain and has low operating cost. Companies that have adopted this system have been very satisfied with its uniform drying, improved productivity without manual labor, high performance, and durability.

KENKI DRYER can dry sticky and adhesive materials that others cannot dry. KENKI DRYER is a breakthrough drying device with a total of 11 patents (2 in Japan and 9 in 7 overseas countries). Please consider KENKI DRYER for your high moisture organic waste dryer, sludge dryer, slurry dryer, methane fermentation digestate dryer, and waste upcycling or recycling dryer.

KENKI DRYER has been granted 11 patents in 8 countries (Japan, Taiwan, USA, France, Germany, UK, Switzerland, Canada).

KENKI DRYER is chosen for slurry raw materials dryers because of its ability to efficiently handle highly adhesive and sticky materials that other dryers cannot process without clogging.
Its internationally patented design ensures smooth and uninterrupted drying, even for slurry with high moisture content. The system operates at low temperatures using saturated steam, which preserves the quality of the material by minimizing changes to its components. This results in a uniform and stable final product.
KENKI DRYER is an eco-friendly solution, as it emits no CO2 during operation and optimizes energy consumption by efficiently utilizing steam.
Its continuous operation allows for 24-hour, unattended use, significantly reducing labor requirements and improving productivity.
The dryer is durable and easy to maintain, with minimal wear and tear due to its low rotational speed.
These features make KENKI DRYER a reliable and cost-effective choice for drying slurry raw materials.

Capability to Handle Sticky and Adhesive Materials:
KENKI DRYER can efficiently dry highly adhesive and sticky slurry materials that are difficult for conventional dryers.
It prevents clogging and ensures smooth drying even for high-moisture content or liquid materials.

Low-Temperature Drying:
Uses saturated steam as a heat source, allowing low-temperature drying that preserves the material’s components.
Ensures that the dried material retains its quality and composition, suitable for use as a finished product.

Environmentally Friendly:
No carbon dioxide emissions during drying when using steam or alternative clean energy sources (e.g., electric or hydrogen boilers).
Aligns with sustainability goals and decarbonization efforts.

Innovative and Patented Technology:
Features a unique mechanism combining conduction heat transfer and hot air, patented internationally in 8 countries.
Provides uniform and thorough drying, even for challenging materials.

High Efficiency and Low Operating Costs:
Consumes less steam due to high drying efficiency, reducing energy costs.
Minimal wear and tear due to slow blade rotation speed (≤5 RPM), leading to low maintenance requirements.

Continuous, Unattended Operation:
Capable of 24-hour continuous operation without human intervention, boosting productivity and reducing labor costs.
Easy to manage, unlike batch systems that require frequent monitoring.

Durability and Long Lifespan:
Designed for long-term use with minimal maintenance, ensuring reliability and cost savings over time.

Versatile Applications:
Suitable for various types of slurry, including those from organic waste, sludge, methane fermentation digestate, and materials for recycling or upcycling.

Proven Track Record and Customer Satisfaction:
Companies adopting KENKI DRYER report improved drying performance, uniform product quality, and operational efficiency.

• Material to be dry: Slurry raw materials 
• Purpose of drying: Product Manufacturing
• Moisture content: 52.8％W.B. before drying, 10.2％W.B. after drying
• Requirements for dryer: To prevent clogging inside the dryer caused by the stickiness and adhesiveness. Automated continuous operation with no operator attended.
  Machine cost can be recovered in short term.
• Test result: OK

Slurry drying

Competitive comparison

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

KENKI DRYER has three main characteristics. They are 1) Any materials can be dried as expected including sticky, adhesive and viscous materials and raw material slurry that no other company can deal with, 2) dried material can by recycled or utilized as raw materials because of its low-temperature drying method, and 3) there is no need to assign operator since its continuous operating system makes 24 hours unattended operation possible.

Products

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

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

Slurry is a semi-liquid mixture, typically composed of fine solid particles suspended in a liquid. The composition and consistency of a slurry can vary depending on its intended use, but it generally resembles a thick, muddy substance.

Common Types and Uses of Slurry:

1. Construction and Engineering:
   • Concrete Slurry: A mixture of cement, water, and fine aggregate, used as a binding agent in construction.
   • Drilling Slurry: A fluid used in drilling operations to cool and lubricate the drill bit, as well as to carry the cuttings to the surface.
2. Agriculture:
   • Animal Waste Slurry: A mixture of animal manure, water, and sometimes bedding materials, used as a fertilizer in farming.
3. Mining and Mineral Processing:
   • Ore Slurry: A mixture of crushed ore and water used in the extraction and processing of minerals.
4. Food Processing:
   • Food Slurries: Mixtures of food ingredients and water or other liquids, used in the production of various food products, such as soups, sauces, and beverages.

Slurry is a versatile substance used across multiple industries, and its characteristics can be adjusted by altering the ratio of solids to liquids or by adding other materials.

Source：ChatGPT

Drying raw material slurry can be challenging due to several reasons:

1. Viscosity and Stickiness: Slurries, especially those with high moisture content, can be highly viscous and sticky. This makes them difficult to handle and process, as they can clog drying equipment and require specialized machinery to prevent such issues.
2. Moisture Content: High moisture content in slurries means that a significant amount of water needs to be removed, which can be energy-intensive and time-consuming. The process must be carefully managed to avoid overheating or under-drying, which can affect the quality of the final product.
3. Feedstock Characteristics: The properties of the slurry, such as its solids content, surface tension, and viscosity, can affect the drying process. For example, higher solids content can make the slurry more difficult to pump and atomize, while higher viscosity can increase droplet size during spray drying.
4. Equipment Requirements: Specialized drying equipment, such as centrifugal dewatering machines or advanced dryers like the KENKI DRYER, may be necessary to handle the unique challenges of slurry drying. These machines must be designed to handle sticky and adhesive materials without clogging.
5. Operational Conditions: The drying conditions, including temperature, air flow, and drying time, need to be precisely controlled to ensure the desired outcome. Incorrect conditions can lead to poor quality or incomplete drying.
6. Energy Consumption: Drying slurries often requires significant energy, particularly if the moisture content is high. This can make the process costly and may necessitate careful optimization to minimize energy consumption.

These factors highlight the complexities involved in drying raw material slurries and the need for tailored solutions to overcome these challenges.

Source：Perpexity