PL-30L Double-Layer Glass Reactor

PL-30L Double-Layer Glass Reactor

A versatile performer for scale-up pilot-scale and mass production

As R&D projects transition from the laboratory to industrial-scale production, each leap in reactor volume signifies a qualitative advance in process maturity. The 30L double‑jacketed glass reactor, regarded as the “golden capacity” for pilot‑scale equipment, is becoming the workhorse of pilot plants in the pharmaceutical, fine chemical, and new materials sectors, thanks to its far‑superior batch‑processing capability, industrial‑grade structural design, and reliable round‑the‑clock continuous operation. It provides an ideal solution for companies undertaking small‑batch production and validating process scale‑up.



30L capacity: Why is it the preferred volume for pilot plants?

Compared with the 10 L pilot-scale unit and the 20 L entry-level mid‑scale reactor, the 30 L double‑jacketed glass reactor represents a qualitative leap in single‑batch throughput. It can handle batch reactions involving 5–15 kg of material, addressing the limitations of smaller pilot units—whose insufficient capacity makes it difficult to replicate industrial operating conditions—while retaining greater operational flexibility and lower safety risks than reactors of 50 L or larger. This optimal capacity makes it the most frequently used and widely applicable “all‑purpose model” in mid‑scale production facilities.



Core Advantages

The 30L model is not merely a simple enlargement of capacity; it represents a comprehensive upgrade in structural design. High‑quality equipment features high‑strength 3.3 borosilicate glass with wall thickness precisely engineered to withstand both the static pressure from larger batch volumes and the dynamic loads generated during stirring. The flanged connection between the vessel body and the lid incorporates an enlarged sealing surface, paired with a perfluoroether rubber O‑ring, ensuring sustained high vacuum levels above –0.098 MPa. Even when handling highly corrosive solvents or high‑viscosity materials, it maintains outstanding sealing performance.



Structural Upgrade: Addressing Challenges of High-Load Operation

The 30L double-jacketed glass reactor is designed with full consideration of the long-term, continuous, high-load operating conditions typical of pilot-scale production:

Heavy-duty mixing system: Equipped with a high-power explosion-proof variable-frequency motor (typically 1.5 kW or higher), delivering output torque far exceeding that of 20-L equipment. The agitator features a modular design, such as “anchor + impeller” or “frame + propeller,” allowing flexible configuration based on material viscosity. The bottom is fitted with either a self-lubricating, wear-resistant mechanical seal or a magnetic coupling seal, ensuring leak-free shaft sealing even during prolonged high-speed mixing of high-solids systems.

High-efficiency heat transfer system: The jacket volume has been appropriately increased, and the circulation paths for both hot and cold media have been optimized through fluid dynamics. A baffle‑jacket design is employed to ensure forced circulation of the heat transfer medium within the jacket without short‑circuiting. This design enables the 30 L unit to maintain high heating rates and rapid cooling response, allowing precise control of highly exothermic reactions or deep‑cryogenic processes (down to -80°C).

Intelligent control system: Equipped with a PLC‑based touch‑screen control panel, it provides centralized monitoring and data logging of temperature, stirring speed, and vacuum level. It supports multi‑stage programmed temperature control and allows pre‑setting of heating profiles, meeting the automated control requirements of complex processes. Additionally, it features multiple safety interlocks, including over‑temperature alarms, over‑pressure protection, and overload power cutoff, ensuring safe operation during pilot‑scale trials.



Convenience of Discharge and Cleaning

Due to the large volume and weight of the reactor vessel, operational convenience becomes a key consideration for 30L equipment:

Electric Lifting and Tilting: Equipped with a standard electric lifting bracket, it enables smooth raising and lowering of the reactor body and 180-degree tilting of the reactor lid. This design makes internal cleaning easy and convenient, while eliminating the safety risks associated with manually handling heavy loads.

Large-Diameter Bottom Discharge: Features a full-bore PTFE discharge valve with a discharge port diameter of at least 35 mm, ensuring smooth discharge of high-viscosity materials or slurries containing solid particles, thereby preventing material residue and blockages.



What are the types of double-jacketed glass reactors categorized by application?

1. Industry Applications

Pharmaceutical Field: pharmaceutical double-jacketed glass reactors, drug synthesis reactors, biopharmaceutical reactors, low-temperature crystallization reactors

Chemical Engineering Field: organic synthesis reactors, fine chemical reactors, catalytic hydrogenation reactors, vacuum distillation reactors

Materials Field: Nanomaterial Synthesis Reactors, Polymer Material Reactors, Glass Transition Experiment Reactors

Research and Education: Laboratory Double-Jacketed Glass Reactors, University Teaching Reactors, Research Pilot-Scale Reactors

2. Capacity and Specification Classification

Small Capacity: 1L double-jacketed glass reactor, 5L double-jacketed glass reactor, 10L double-jacketed glass reactor

Pilot/Production:20L double-jacketed glass reactor、50L double-jacketed glass reactor, 100L double-jacketed glass reactor, 150L double-jacketed glass reactor, 200L double-jacketed glass reactor

Special Specifications: Explosion-proof double-jacketed glass reactor, lift-and-tilt reactor, vacuum double-jacketed glass reactor

Parameter Table for Double-Jacketed Glass Reactors

Real-World Photos of a Double-Layer Glass Reactor

Detailed images of each component of the double-layer glass reactor

30L double-layer glass reactor, 30L integrated high- and low-temperature unit and low-temperature circulator used in tandem

Application scenario: Scale-up from small-scale trials to small-batch production

The 30L double-jacketed glass reactor demonstrates unique value in the following areas:

1. Pilot-scale scale-up of pharmaceutical intermediates

During the process validation phase for active pharmaceutical ingredients (APIs), the 30L equipment can fully replicate the small-scale process route, with a single batch yield sufficient to support formulation development, stability studies, and the preparation of clinical trial samples.

2. Batch preparation of fine chemicals

Applicable to small-batch customized production of high-end fine chemicals such as liquid crystal materials, photoinitiators, and surfactants, meeting market order demands for multiple product varieties in small quantities.

3. Polymerization and Synthesis of New Materials

With its powerful stirring capability and precise temperature control system, it can effectively handle operating conditions in polymerization reactions—such as those involving polyester, polyurethane, and silicone—where viscosity increases sharply, ensuring a uniform molecular weight distribution.

4. Pilot-scale production of new energy materials

In the kilogram-scale synthesis of new energy materials, such as lithium-ion battery electrolyte additives and sodium-ion battery cathode material precursors, the 30L reactor is an ideal choice for validating process stability and batch-to-batch consistency.



30L Double-Layer Glass ReactorPurchasing Tips

When selecting a 30L double-jacketed glass reactor, the following parameters should be given priority:

Vacuum retention capability: Suppliers are required to provide a vacuum pressure‑holding test report, ensuring that the vacuum level does not ｄｒｏｐ by more than 0.01 MPa during 24 hours of continuous operation.

Agitation system reliability: Pay attention to the cooling circulation design of the mechanical seal and the concentricity accuracy of the agitator shaft. High concentricity can effectively extend the service life of the seals and reduce maintenance frequency.

Material compliance: Confirm that all parts in contact with the process materials (including the impeller, discharge valve, and seals) comply with FDA or Good Manufacturing Practice (GMP) requirements, meeting pharmaceutical‑grade application standards.

Maintenance strategy: Ensuring continuous and stable operation

The 30L double-layer glass reactor typically undertakes core production tasks in pilot-scale workshops, making scientific maintenance essential:

Regularly ｒｅｐｌａｃｅ seals: In mechanical seals, the rotating and stationary rings are wear parts; it is recommended to inspect and ｒｅｐｌａｃｅ them every six months to one year to prevent production interruptions caused by seal failure.

Scale prevention in the jacket: With long-term use of heat-transfer oil or circulating water, scale may form on the inner walls of the jacket, reducing heat-exchange efficiency. It is advisable to perform regular chemical cleaning or use deionized water as the circulating medium.

Electrical system inspection: The explosion-proof electrical control cabinet should be regularly checked for loose wiring terminals and proper operation of the variable-frequency drive fan to ensure electrical safety.

Summary

The 30L double-jacketed glass reactor, with its large-scale processing capacity, industrial‑grade structural design, and intelligent control interface, successfully bridges the gap between laboratory R&D and industrial production. It is not merely a reaction vessel; it serves as a core platform for pilot‑scale process validation and a critical tool for companies to translate scientific and technological advances into productive capacity. Whether handling small‑batch production orders or gathering essential process data in preparation for full‑scale manufacturing, the 30L model’s exceptional versatility makes it the ideal choice for pilot plants.



If you are planning to build a pilot plant or need to upgrade your reaction equipment, please contact us at Pulley for detailed technical solutions for the 30L double‑jacketed glass reactor. Let us help you confidently tackle every challenge of scale‑up.