Zhanghua - Custom Rotary Double Cone Vacuum Dryer For Pharmaceutical Industry

What is a Rotary Cone Vacuum Dryer?

  A double cone rotary vacuum dryer is a specialized industrial drying system designed for efficient, low-temperature drying of powder, granular, and fibrous materials. It operates under vacuum conditions, reducing boiling points and minimizing thermal degradation, making it ideal for heat-sensitive products like pharmaceuticals, biochemicals, and fine chemicals. Unlike conventional dryers, its double-cone structure ensures uniform mixing and drying, eliminating hotspots and ensuring consistent product quality.

Double Cone Rotary Vacuum Dryer Working Principle

  The dryer operates through a combination of vacuum suction, heat transfer, and mechanical rotation:

       Vacuum Environment: Reduces atmospheric pressure, lowering the boiling point of solvents and enabling efficient evaporation at lower temperatures.

       Heat Transfer: A jacketed design circulates hot water, steam, or thermal oil through the outer layer, heating the material indirectly.

       Rotary Motion: The double-cone vessel rotates slowly (typically 6–10 RPM), ensuring uniform mixing and exposing all particles to heat and vacuum.

       Solvent Recovery: Vaporized moisture or solvents are drawn out via vacuum lines and condensed for reuse or disposal.

  This process ensures rapid, uniform drying while preserving product integrity, making it ideal for aseptic and high-purity applications.

Double Cone Dryers Specification & Operation

Key Specifications of double cone dryers

· Capacity: 20L–18,000L (customizable for batch sizes from pilot-scale to industrial production).

· Materials: SS304, SS316L, Titanium, Hastelloy, or PTFE-lined for corrosion resistance.

· Vacuum Level: ≤0.30 Pa (advanced sealing technology ensures ultra-low leakage).

· Temperature Range: Up to 150°C (adjustable via jacketed heating).

· Rotation Speed: 6–10 RPM (variable for different materials).

· Power: Customizable voltage and motor power (0.55kW–30kW).

· Certifications: GMP, CE, PED, ASME, GB150 (compliant with global standards).

Operational Features

1.High Efficiency: The 60° cone angle prevents material clogging and ensures smooth discharge.

   2.CIP/SIP Ready: Optional Clean-in-Place (CIP) and Sterilize-in-Place (SIP) systems reduce downtime and contamination risks.

   3.Low Labor Intensity: Automated controls and easy-clean design minimize manual intervention.

   4.Safety: Pressure vessels and vacuum filters ensure reliable operation under vacuum.

   6.Customization: Function (e.g., online weighing, polishing), material, and dimensions tailored to client needs.

Technical Parameters (Example for 100L Model)

Why Choose Zhanghua’s Double Cone Rotary Vacuum Dryers?

· Precision Engineering: High concentricity (≤0.16mm for 20L–3,000L models) ensures stable operation and longevity.

· Aseptic-Grade Production: Advanced vacuum technology and SIP/CIP options support sterile manufacturing.

· Energy Efficiency: Optimized heat transfer and vacuum systems reduce energy consumption.

· Global Compliance: Certifications (GMP, CE, ASME) guarantee quality and safety.

· 40+ Years of Expertise: As pioneers since 1978, Zhanghua delivers reliable, innovative solutions.

Applications

· Pharmaceuticals: Drying of antibiotics, APIs, and biochemicals.

· Chemicals: Crystallization and drying of fine chemicals.

· Food & Beverage: Low-temperature dehydration of spices, herbs, and extracts.

· Energy & Mining: Drying of catalysts and mineral powders.

Custom Services & Support

· Tailored Designs: Customize capacity, material, and functionality (e.g., online weighing, knife-edge cones for sticky materials).

· After-Sales Support: Field installation, training, maintenance, and 24/7 technical assistance.

· Spare Parts: Quick supply of genuine components to minimize downtime.

Zhanghua Pharmaceutical Equipment Co.,Ltd has been manufacturing, exporting and supplying excellent quality Customized Rotary Double Cone Vacuum Drying Equipment For Pharmaceutical Industry. Topsale Product indeed plays an essential role in our everyday activities.The Best product are undeniably beautiful, legendary in their own way and yet timeless enough to remain popular throughout a brief period of time. Wuxi Zhanghua Pharmaceutical Equipment Co.,Ltd will continue to gather more industry elites and improve our technology to upgrade ourselves. We hope to achieve the goal of realizing independent production without relying on others' technologies.

Products Description

Double-Cone Vacuum Dryer

Material: SS304, SS316L, Titanium, Hastelloy, PTFE lined

Application: mainly applicable for drying all kinds of granular materials, such as antibiotics,crystal, in the pharmaceutical, chemical and other industries.

Main Characteristics

➤Good sealing performance: concentric degree of shaft are controlled well, both ends use mechanical sealing.

➤ Good rigidity: Both ends of the cone are welded together with the cone vessel as a whole. It is not easy to be deformed.
➤Steady transmission: The whole unit is driven by the electrical motor, reducer, big and small gears, which enables the unit run
more stably and reliably.
➤Mounted with CIP and SIP device.
➤ Design with SIP, CIP dedicated device

➤The cone angle is designed as 60° which prevents materials from pilling during rotary process, and avoids powder retention
during discharging.

➤The special design of vacuum pipes and vacuum filter increase the loading coefficient, which can even reach 65%.

➤The device includes three layers. The parts touching with materials Jacket in the middle is for hot water circulation. To prevent stainless steel and carbon steel from producing static corrosion, the jacket must be made from stainless steel, and the outer layer uses fiberglass cotton for heat preservation.

Customer Site

Pharmaceutical Industry

Technical Parameter

Specification （L）	Capacity （L）	Drive power （kw）	Rotate speed （rpm/min）	Host weight （kg）	Diathermanous area of  condensator （㎡）
20	≤10	0.55	6	300	3
50	≤25	0.55	6	450	3
100	≤50	0.75	6	820	3
...	...	...	...	...	...
18000	≤9000	30	2.2	20150	200

Our Advantage

Zhanghua VS Other	High concentricity of two axes of equipment， 20L-3000L with the concentric degree ≤ 0.16mm, 3000L-5000Lconcentricity ≤ 0.20mm,5000L - 18000L concentricity ≤0.25 mm. More stable operation, better sealing performance, longer service life
	Zhanghua VS Other	New advanced airtight technology, vacuum ≤ 030Pa, improve product quality, can be used for aseptic grade product production
	Zhanghua VS Other	Clean CIP online (if configured) to reduce labor and equipment pollution
	Zhanghua VS Other	Online sterilized SIP (if configured), capable of producing sterile products
		Online weighing system (if configured) eliminates the need for weighing after secondary material transfer to reduce labor force and improve measuring accuracy
		Polishing precision up to 0.014μm, (if configured), easy to clean equipment, prevent material sticking to the wall
		Double taper with knife (if available) to prevent pilling of sticky materials during drying
		The first in China, the double cone produced in 1978, is still in use by users, with reliable performance. With nearly 40 years of experience, it has produced no less than 1000 sets

Design / Calculation Software

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Custom Service

➤Our Products for pharmaceutical and chemical industries
1. Multifunctional “Three in One” (filtering, washing and drying)

2. Crystallizing Tank, Reaction Kettle
3. Sterile double cone dryer
4. Rake Vacuum Dryer/Paddle Dryer
5. Plate-fin Heat Exchanger
➤Our advantage
1. Special Equipment: Pressure Equipment, Equipment made of anti-corrosion materials, Sterile Equipment
Equipment made of anti-corrosion materials includes: anti-corrosion lining plastic/ PTFE/ enamel,

Ti/HC22/Mone11
2.Customized Design: Double-Cone in 20L-20m³
Rake Dryer (with mechanical seal) in 16 m³
DN300-DN600 “Three in One”
3.Design/Calculation Software
➤scope of business
1. On-site Inspection
2. Technical Innovation Plan for Equipment Technical Improvement Plan for Equipment’s Structure Optimization Fast and Effective Solution to Equipment Malfunctions Highly Efficient and Precise On-site Construction Service Commitment to a Deadline in Customization A Full Range of long-term on-site technical maintenance service
3. Maintenance
4. Technical Solutions
5.On-site Testing and Training
6. Spare Parts

Company Profile