Jacketed Agitated Reactor

Description

In the realm of chemical engineering and process industries, the jacketed agitated reactor (frequently referred to as a jacketed stirred tank reactor or double-walled vessel) serves as a foundational asset. Designed to handle complex chemical transformations under strict operational parameters, this specialized equipment ensures that reactions proceed safely, efficiently, and with high product yields. 

 

Core Structural Architecture

 

The engineering design of a jacketed agitated reactor relies on two primary systems working in tandem: thermal regulation through the outer shell and mechanical homogenization via internal stirring.

 

  • The Jacketed Shell (Thermal Control): The inner core vessel—which holds the active chemical reactants—is completely or partially surrounded by an outer cavity known as a jacket. Heat transfer fluids such as cooling water, synthetic thermal oils, steam, or glycol are actively circulated through this space. This thermal framework is critical for managing exothermic reactions (safely removing excess heat to prevent dangerous thermal runaways) and endothermic reactions (supplying continuous thermal energy to drive conversions).

 

  • The Agitation Mechanism (Mass Transfer & Mixing): Driven by an external motor, the internal mechanical stirrer utilizes precision impellers, pitched blades, or turbines to achieve uniform molecular dispersion. Effective agitation drastically improves system homogeneity, accelerates reaction rates, and optimizes overall heat transfer coefficients. Furthermore, internal baffles are commonly welded or fitted inside the vessel to disrupt laminar flow, enhance local turbulence, and eliminate undesirable vortex formation.

Types of Jacketed Agitated Reactor

Applications of Other Machines

Key Components of Jacketed Agitated Reactor

Inner vessel holding reactants

Outer jacket for thermal fluid circulation

Agitator shaft with impeller

Inlet/outlet nozzles, vents, thermowells, and condensers

Internal coils for additional heat transfer, vacuum insulation, or scraper blades for viscous materials

Key Features of Jacketed Agitated Reactor

  • Constructed with SS 304 / SS 316 / SS 316L contact parts for corrosion resistance and hygiene

 

  • Capacity range from 5 liters to 50,000 liters (custom sizes available)

 

  • Jacketed or limpet coil design for precise heating and cooling

 

  • Fully compatible with vacuum and pressurized operations

 

  • Provision for inert gas blanketing

 

  • Designed as per ASME standards

 

  • Variable Frequency Drive (VFD) option for adjustable speed control

 

  • Mechanical seal option instead of traditional gland packing

 

  • Rupture disc provision for enhanced safety

 

  • Dual temperature monitoring (jacket and product at multiple levels)

 

  • Available in standard and vacuum-rated versions

 

  • Flush bottom valve option to minimize product hold-up

 

  • Flameproof / explosion-proof motor options

 

  • PLC-based automatic controls available

FAQ for Jacketed Agitated Reactor

The system operates through two integrated functions: thermal control and mechanical agitation. Heat transfer fluids (such as steam, cooling water, thermal oil, or glycol) circulate through the outer jacket to manage exothermic or endothermic reactions. Simultaneously, a motor-driven agitator with impellers, pitched blades, or turbines provides uniform mixing, improves mass transfer, accelerates reaction rates, and enhances heat transfer efficiency. Internal baffles prevent vortex formation and promote turbulence.

All product-contact parts are fabricated from high-grade stainless steel — SS 304, SS 316, or SS 316L — ensuring excellent corrosion resistance, hygiene, and compliance with industry standards. The design follows ASME guidelines for pressure and vacuum applications.

These reactors are offered in a wide range of capacities, from laboratory-scale 5 liters up to 50,000 liters. Larger industrial models can also be supplied in the 10–100 KL range, with fully customized sizes available based on process requirements.

The reactor features a jacketed or limpet coil design that allows efficient circulation of heating or cooling media such as steam, thermal oil, hot/cold water, or glycol. This enables precise temperature control for both exothermic and endothermic reactions.

Yes. The reactors are designed to be fully compatible with both vacuum and pressurized operations. They typically withstand vacuum levels of 650–700 mm Hg and pressures up to 3 bar above atmospheric, making them suitable for a wide range of process conditions.

Key safety and control options include provision for a rupture disc, inert gas blanketing, dual temperature measurement (jacket and product at multiple levels), mechanical seals, Variable Frequency Drive (VFD) for speed control, flameproof/explosion-proof motors, and optional PLC-based automatic controls.

The primary components include the inner vessel (holds reactants), outer jacket (for thermal fluid circulation), agitator shaft with impeller, inlet/outlet nozzles, vents, thermowells, condensers, and optional internal coils, vacuum insulation, or scraper blades for handling viscous materials.

It is widely used across the pharmaceutical, nutraceutical, herbal, Ayurvedic, biotech, cosmetic, and chemical industries for processes that require precise temperature control, uniform mixing, and safe handling of chemical reactions or formulations.

Major advantages include precise thermal management, excellent mixing and homogeneity, high reaction efficiency and product yields, compatibility with vacuum/pressure/inert gas operations, robust ASME-compliant construction, low residual product hold-up (with flush bottom valve option), and flexibility for both standard and vacuum-rated applications.

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