China Jiangsu Shengman Drying Equipment Engineering Co., Ltd Company News

A Complete Comparison for Food Powder Processing 1. Introduction In the food processing industry, powder handling plays a critical role in product quality, stability, and manufacturing efficiency. Two widely used methods for powder granulation are dry granulation and wet granulation. Both techniques are used to improve powder flowability, reduce dust, enhance compressibility, and ensure uniform mixing. However, they differ significantly in process, equipment, cost, and application. This article provides a detailed comparison of dry granulation vs wet granulation in food industry applications, helping manufacturers choose the right solution for their production needs. 2. What is Dry Granulation? Dry granulation is a process that compacts powder materials without using any liquid binder. It typically uses mechanical pressure, such as a roller compactor or slugging system, to form dense flakes or briquettes, which are then milled into granules. Key Characteristics: No liquid or solvent required Uses high pressure compaction Suitable for heat- or moisture-sensitive materials Simple and energy-efficient process Common Food Applications: Milk powder reprocessing Cocoa powder agglomeration Seasoning and spice powders Instant beverage powders Protein and nutritional powders 3. What is Wet Granulation? Wet granulation involves adding a liquid binder (such as water or food-grade solutions) to powder materials to form agglomerates. The wet mass is then dried and sized into granules. Key Characteristics: Requires liquid binder Includes mixing, wet massing, and drying steps Produces strong and uniform granules More time and energy consuming Common Food Applications: Instant drink mixes Baking ingredient premixes Flavored powder blends Food additives requiring high uniformity 4. Dry Granulation vs Wet Granulation: Key Differences Feature Dry Granulation Wet Granulation Liquid usage No liquid required Requires binder solution Process steps Simple (compaction + milling) Complex (mixing + drying) Energy consumption Low High Equipment cost Moderate Higher (includes dryer) Suitable materials Heat/moisture-sensitive powders Stable powders Production speed Faster Slower Dust control Good Excellent Granule strength Medium High 5. Advantages of Dry Granulation in Food Industry Dry granulation is increasingly preferred in modern food manufacturing due to its simplicity and efficiency. Key Advantages: No need for drying process Suitable for heat-sensitive food ingredients Lower production cost and energy consumption Reduced processing time Environmentally friendly (no liquid waste) Easy integration into continuous production lines Especially in industries like milk powder, cocoa processing, seasoning, and nutritional supplements, dry granulation is widely adopted. 6. Advantages of Wet Granulation Wet granulation still plays an important role in certain food applications where strong binding and uniform particle structure are required. Key Advantages: Produces very strong and stable granules Excellent content uniformity Suitable for complex formulations Better control over granule size distribution However, it requires more equipment, energy, and processing time. 7. When to Choose Dry Granulation? Dry granulation is the preferred option when: The material is sensitive to heat or moisture A simple and cost-efficient process is required Continuous production is preferred Dust reduction and flowability improvement are needed Reprocessing of fine food powders is required 8. When to Choose Wet Granulation? Wet granulation is more suitable when: Strong granule formation is required The formulation allows moisture and drying High uniformity is critical Complex ingredient binding is needed 9. Industry Trend: Why Dry Granulation is Growing in Food Manufacturing In recent years, food manufacturers are increasingly shifting toward dry granulation technology because it offers: Lower operational cost Cleaner production process Better energy efficiency Continuous manufacturing compatibility Reduced environmental impact With the growth of instant food products and nutritional powders, demand for roller compaction dry granulation systems continues to increase globally. 10. Conclusion Both dry granulation and wet granulation are important technologies in food powder processing. However, their applications differ based on material properties and production requirements. Dry granulation is ideal for efficient, low-cost, and moisture-sensitive food processing. Wet granulation is suitable for high-strength and highly uniform granule production. For modern food manufacturing, dry granulation is becoming the preferred solution due to its simplicity, efficiency, and sustainability.

  1. Industry Challenges Heat-sensitive food additives such as vitamins, enzyme powders, and flavorings are prone to degradation or evaporation during processing. Traditional wet granulation or high-temperature methods may reduce active components, affecting functionality and flavor. 2. Dry Granulation Technology Principle Roller Compactor dry granulation mechanically compresses powder into high-density sheets, then cuts them into uniform granules. No water or high-temperature treatment is required, preserving heat-sensitive components. Adjustable roller gaps and hydraulic systems allow precise control of granule density and hardness. 3. Technical Advantages Activity Preservation: Maximizes retention of heat-sensitive ingredient activity, ensuring functional integrity. Uniform Granules: Cutting and secondary milling ensure consistent particle size, improving flowability and mixing uniformity. Energy Efficient: No water or drying needed, reducing energy consumption and production cost. Operational Safety: Excellent sealing prevents dust leakage, ensuring operator safety. 4. Application Examples Dry granulation is suitable for nutritional powders, functional beverage premixes, and flavor blends. Optimized granules improve solubility, uniformity, and downstream processing performance, enabling efficient and stable production lines. 5. Conclusion For food manufacturers, using dry granulation for heat-sensitive additives ensures activity and flavor preservation while increasing production efficiency—a key technique for achieving high-quality, controllable processing in the food industry

Here's a clear comparison table between a conventional spray dryer and a vacuum spray dryer: Feature Conventional Spray Dryer Vacuum Spray Dryer Operating Pressure Atmospheric pressure Reduced pressure (vacuum) Drying Temperature High (150–300°C typical) Low (50–100°C typical) Suitable for Heat-stable materials Heat-sensitive materials (proteins, enzymes, pharmaceuticals, flavors) Drying Speed Fast Slower Thermal Degradation Risk Higher Lower Equipment Complexity Simple More complex Cost Lower Higher Applications Milk powder, coffee, detergents Pharmaceuticals, bioactive compounds, sensitive food powders      

Spray drying for lithium battery production is a technique typically used to create specific types of powders or materials required in battery manufacturing, particularly for the production of electrode materials or electrolytes. In the context of lithium batteries, spray dryers are commonly used to produce.   How Spray Drying Works in Lithium Battery Production: Preparation of Slurry: The materials (such as lithium salts, metals, or polymers) are mixed into a liquid slurry, typically with solvents. Atomization: The slurry is atomized using a nozzle or rotary atomizer inside the spray dryer. The tiny droplets are created and sprayed into a drying chamber. Drying: Hot air is injected into the chamber, which evaporates the solvent, leaving behind solid particles. Collection of Powder: The solid particles are collected at the bottom of the chamber. These powders are then further processed to ensure they meet the desired specifications for battery production.   Main Configuration No. Item Parameter 1 Raw material Lithium slurry 2 Model DGLP5D900 spray drying test machine 3 Drying chamber Ø900×H1600mm 4 Dimension of dryer (L*W*H) 3000×1500×2400mm 5 Working temp. Inlet air temp. t1=150～300℃ Outlet air temp. t2=80～130℃ 6 Water evaporation W水=5kgH2O/h 7 Compressed air consumption P=0.2～0.6MPa,Q=0.3m3/min 8 Installed power 380V/60Hz, N=30KW 9 Workshop roughness 3/1000～5/1000

Primary Heat Source Options A. Electric Heating Best for: Pharma/food (clean energy, precise control ±0.5°C) 2025 Tech: Infrared-assisted drying (30% faster than convection) Limitation: High OPEX in regions with >$0.18/kWh electricity B. Natural Gas Best for: Large-scale mineral/chemical processing Advantage: Lowest cost per BTU in North America/Middle East Emission Solution: Integrated SCR systems (NOx

"Spray Dryer vs. Freeze Dryer: Cost & Quality Comparison" Data-Driven Analysis: Parameter Spray Drying Freeze Drying Capital Cost 150

  In modern food processing, the uniformity, flowability, and granule stability of powder ingredients directly affect product texture, mixing performance, and production efficiency. While traditional wet granulation can enhance particle appearance, it poses risks for heat-sensitive ingredients, volatile flavors, or moisture-sensitive food powders. In this context, Roller Compactor dry granulation technology offers the food industry an efficient, safe, and controllable solution. Dry granulation mechanically compacts powder into high-density sheets, which are then cut and milled into uniform granules. The process requires no water or heat treatment, preserving active components and flavor characteristics. Adjustable roller gaps and hydraulic systems allow precise control over granule density and hardness, accommodating the processing needs of various food powders. Practically, dry granulation is suitable for food additives, functional nutrition powders, instant coffee powders, and seasonings. By optimizing particle size and density distribution, it significantly improves flowability, enhances mixing uniformity, and reduces segregation or caking, ensuring stable processing. Moreover, the compact design and easy assembly/disassembly of Roller Compactors allow fast batch changeovers on production lines, increasing operational efficiency. For food manufacturers, adopting dry granulation maintains ingredient activity, reduces energy consumption, and improves yield and product consistency. This technology is particularly advantageous for heat-sensitive or low-moisture food powders, providing reliable support for high-quality food production

The drying industry is constantly evolving, driven by technological advancements, energy efficiency demands, and the need for more sustainable practices. Among the many drying technologies, spray dryers have proven to be one of the most versatile and efficient methods for producing fine powders, especially in industries such as food processing, pharmaceuticals, chemicals, and more. As industries continue to demand higher performance and energy efficiency, it’s essential to look ahead and understand the emerging trends in spray drying technology. Here are the key trends shaping the future of spray dryers:   1. Energy Efficiency and Sustainability With increasing environmental concerns and rising energy costs, there’s a growing emphasis on reducing energy consumption in drying processes. The future of spray drying technology will focus heavily on: Heat Recovery Systems: Modern spray dryers are being equipped with advanced heat recovery systems that recycle the heat from exhaust gases, reducing energy usage significantly. Low-Energy Spray Drying: Innovations are focused on creating systems that operate at lower temperatures, which are not only energy-efficient but also help preserve sensitive compounds, particularly in food and pharmaceuticals. Sustainable Materials and Processes: Spray dryers are also evolving to support eco-friendly production, including using alternative fuels, greener coatings, and recyclable materials for their construction. Impact: These changes help industries lower their carbon footprint and reduce operating costs while maintaining product quality.   2. Automation and Smart Control Systems In the era of Industry 4.0, automation is playing an increasingly significant role in spray drying processes: IoT Integration: Spray dryers will become smarter with the integration of Internet of Things (IoT) sensors that monitor variables such as temperature, humidity, and pressure in real-time. This ensures more precise control over the drying process. AI and Machine Learning: Artificial intelligence (AI) and machine learning (ML) are being applied to optimize drying parameters. These technologies enable predictive maintenance, real-time monitoring, and even process optimization based on data collected during production. Remote Monitoring and Control: With smart control systems, manufacturers can monitor and adjust spray dryer settings remotely, improving efficiency and troubleshooting potential issues without being physically present. Impact: Automation leads to more consistent product quality, reduced downtime, and better predictive maintenance, all of which enhance overall production efficiency.   3. Customization for Industry-Specific Applications Spray drying is increasingly being tailored to meet the specific needs of different industries. Customization is becoming a key trend, with manufacturers providing bespoke solutions for diverse applications: Pharmaceuticals: Spray dryers designed for pharmaceutical products will be more specialized, featuring more precise control of particle size and moisture content to meet stringent regulatory standards. Food & Beverages: Spray dryers in the food industry will continue to evolve, particularly for sensitive products like dairy powders, fruit concentrates, and probiotics, with a focus on preserving flavor, nutrients, and texture. Cosmetics: For the cosmetics industry, spray dryers will focus on producing ultra-fine powders that are easy to incorporate into formulations and maintain the stability of active ingredients. Impact: Custom solutions allow industries to meet the unique challenges of their product types, resulting in higher quality, more consistent results, and improved market competitiveness.   4. Enhanced Particle Control and Product Quality In the future, manufacturers will continue to innovate in terms of particle control and product quality: Particle Size and Uniformity: With advancements in nozzle and atomization technology, spray dryers are becoming capable of producing more uniform particle sizes, which is crucial in industries like pharmaceuticals and food processing where consistency is key. Controlled Moisture Content: Enhanced monitoring systems allow for better control over moisture levels in the final product, ensuring the desired quality, solubility, and storage stability. Microencapsulation: One of the most promising developments in spray drying is the microencapsulation of sensitive ingredients like vitamins, enzymes, and probiotics, which protects them from degradation and extends their shelf life. Impact: These improvements result in higher-quality products that meet increasingly demanding customer specifications, whether it's in food preservation, drug formulation, or cosmetics.   5. Compact and Modular Designs Space optimization is becoming increasingly important, especially in industries that require high-throughput but have limited floor space for equipment. Modular Spray Dryers: Future spray dryers will be designed to be more modular, allowing for easy scaling and customization based on production needs. This is especially useful for smaller or growing companies that need flexible production lines. Compact Systems: As industries look to reduce their operational footprint, compact spray drying systems that deliver high performance in a smaller package are gaining popularity. Impact: Modular and compact systems provide greater flexibility for manufacturers, enabling them to scale production up or down as needed without sacrificing performance.   6. Advanced Materials for Spray Dryer Construction The materials used in spray dryer construction will continue to evolve to withstand harsher operating conditions and improve product quality: Corrosion-Resistant Coatings: To extend the lifespan of spray dryers, advanced coatings that resist corrosion from acids, alkalis, and other aggressive substances are becoming more common. Heat-Resistant Materials: New materials that can withstand higher temperatures without degrading will enhance the durability and efficiency of spray dryers, especially in high-temperature drying applications. Impact: These advanced materials increase the operational lifespan of spray dryers, reduce maintenance costs, and improve the overall reliability of the equipment.   7. Integration with Other Drying Technologies As industries require more tailored drying solutions, the integration of spray dryers with other drying technologies is on the rise: Hybrid Systems: For specific applications, hybrid drying systems that combine spray drying with other methods like freeze drying or fluidized bed drying are becoming more popular. These systems provide enhanced control over drying processes and can achieve desired results that would be challenging for standalone systems. Process Integration: Spray dryers are also being integrated into larger production lines, where drying is just one part of a multi-step manufacturing process. This integration allows for more streamlined operations, reducing handling and improving overall system efficiency. Impact: Hybrid and integrated systems provide more flexible, efficient, and effective solutions for industries with diverse and complex drying needs.   Conclusion: The Future of Spray Drying The spray drying industry is poised for exciting developments in the coming years, driven by trends in energy efficiency, automation, industry-specific customization, and product quality enhancement. Companies that invest in these emerging technologies will gain a competitive edge by improving operational efficiency, reducing energy consumption, and meeting the increasingly complex demands of their customers. At the forefront of these innovations are manufacturers who can integrate smarter, more sustainable, and more flexible spray drying solutions into their operations. The future of spray drying is not only about enhancing performance but also about delivering high-quality, cost-effective, and sustainable products that meet the evolving needs of global industries. This content will help your website stay relevant in the rapidly advancing drying technology sector, and it demonstrates your company's awareness of and alignment with emerging trends.

Last month, we finished the production of large scale LPG-100 Series spray dryer for our local customer. After the careful inspection by customer, they are very satisfied with the quality of our machine and the service of our company. Now the whole unit of spray dryer has been arrived in our customer's factory and will start assembly & commissioning work soon. Hope this machine will put into the production as soon as possible & bring high efficient return to customer in the near future.   Shengman company has more than good experience of spray dryer, if you are interested in this product and want to know more information, Welcome to our website: www.spraydryingmachine.com. You can also email: xiaoyang6600@126.com or add my whatsapp or wechat +86 13401338459

We attend the China International Pharmaceutical Machinery Exposition 2025 from  Apr 23rd to 25th. Welcome to visit our booth.