Editorial Technical Reference

Jacket

This page explains how Jacket is classified within Chemical Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

A hollow enclosure surrounding a mixing reactor vessel for temperature control through fluid circulation.

Representative product image. Confirm appearance and specifications with the manufacturer.

Product Specifications

Technical details and manufacturing context for Jacket

Definition
The jacket is an integral component of a mixing reactor vessel that forms an annular space around the vessel's body. It enables precise temperature regulation by circulating heating or cooling fluids (such as steam, water, or thermal oil) through this space, facilitating heat transfer to or from the vessel's contents during mixing, reaction, or processing operations. The jacket is typically constructed from materials compatible with the process media and operating conditions, including stainless steel (e.g., 304, 316L), carbon steel, Hastelloy, or titanium. The gap width of the annular space is a critical design parameter, specified in millimeters, and must be confirmed for the specific reactor model and application. The jacket operates by pumping temperature-controlled fluid through the annular space between the jacket and the reactor vessel wall. Heat transfer occurs through conduction across the vessel wall, allowing for heating (via hot fluids) or cooling (via chilled fluids) of the vessel's contents to maintain optimal process conditions. When selecting or verifying a jacket, engineers should consider the required heat transfer rate, fluid type, pressure and temperature ratings, and compatibility with the vessel material. It is essential to verify model-specific dimensions, material grades, and any applicable standards with the legal manufacturer or supplier, as these factors influence performance and safety. The jacket's integrity is crucial for process control; signs of leakage, corrosion, or reduced heat transfer efficiency may indicate maintenance needs. Failure boundaries include excessive pressure differentials, thermal stress, or material degradation, which could compromise the jacket's structural integrity. This directory entry provides general information; always consult the manufacturer for detailed specifications and compliance requirements.
Working Principle
Temperature-controlled fluid is pumped through the annular space between the jacket and the reactor vessel wall. Heat transfer occurs through conduction across the vessel wall, allowing for heating (via hot fluids) or cooling (via chilled fluids) of the vessel's contents to maintain optimal process conditions. The flow rate and temperature of the fluid are adjusted based on the process requirements, and the jacket gap width influences heat transfer efficiency. Proper fluid circulation ensures uniform temperature distribution within the vessel, which is critical for consistent mixing and reaction outcomes.
Common Materials
Stainless Steel (e.g., 304, 316L), Carbon Steel, Hastelloy, Titanium
Technical Parameters

What to specify in your RFQ

  • Jacket gap width (annular space thickness) in mm

These are the quantities to specify to the manufacturer when sizing or requesting a quote. The manufacturer's own documentation governs the exact figures and applicable standard.

Components / BOM
  • Jacket Shell Part
    Forms the outer wall of the jacket enclosure
    Material: Stainless Steel
  • Inlet Nozzle Part
    Entry point for heating/cooling fluid into jacket
    Material: Stainless Steel
  • Outlet Nozzle Part
    Exit point for heating/cooling fluid from jacket
    Material: Stainless Steel
  • Baffles/Flow Diverters Part
    Directs fluid flow within jacket for optimal heat transfer
    Material: Stainless Steel
  • Drain Valve
    Allows complete drainage of jacket fluid for maintenance
    Material: Stainless Steel

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Up to 10 bar (standard), 15-20 bar with reinforced construction
flow rate: 10-100 m³/h (typical), depends on jacket volume and heat transfer requirements
temperature: -20°C to 200°C (typical), up to 300°C with specialized materials
slurry concentration: Up to 40% solids by weight, particle size <500 μm recommended
Media Compatibility
✓ Thermal oil (e.g., Dowtherm) ✓ Water/glycol mixtures ✓ Steam (saturated or superheated)
Unsuitable: Highly corrosive acids (e.g., concentrated sulfuric acid) due to material degradation risks
Sizing Data Required
  • Reactor heat transfer duty (kW)
  • Jacket volume and surface area requirements
  • Available utility pressure and temperature

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Thermal fatigue cracking
Cause: Cyclic thermal stresses from process temperature fluctuations, leading to crack initiation and propagation in the jacket material, often exacerbated by poor design or material selection.
Corrosion under insulation (CUI)
Cause: Moisture ingress and accumulation beneath insulation, causing localized corrosion of the jacket material, typically due to damaged insulation, improper sealing, or inadequate drainage.
Maintenance Indicators
  • Visible cracks, bulges, or discoloration on the jacket surface
  • Audible hissing or whistling sounds indicating insulation failure or pressure leaks
Engineering Tips
  • Implement regular thermal imaging inspections to detect hot spots or cold spots that indicate insulation degradation or moisture ingress.
  • Ensure proper sealing and drainage of insulation systems to prevent moisture accumulation and reduce corrosion risk.

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ISO 13688:2013 - Protective clothing - General requirements EN 342:2017 - Protective clothing - Ensembles and garments for protection against cold ASTM D4157-13 - Standard Test Method for Abrasion Resistance of Textile Fabrics (Rotary Platform, Double-Head Method)

Quoted from the published standard.

Manufacturing Precision
  • Seam allowance: +/- 2mm
  • Zipper alignment: +/- 1.5mm
Quality Inspection
  • Colorfastness test (ISO 105-B02:2014)
  • Tensile strength test of seams (ISO 13935-2:2014)

Manufacturers of Jacket

Manufacturer profiles associated with Jacket.

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Technical documentation
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Manufacturing capability
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Frequently Asked Questions

What is the purpose of a reactor jacket?

The jacket provides a means to control the temperature of the vessel's contents by circulating heating or cooling fluids through an annular space around the vessel, enabling heat transfer to or from the process.

What materials are commonly used for reactor jackets?

Common materials include stainless steel (e.g., 304, 316L), carbon steel, Hastelloy, and titanium. The choice depends on process compatibility and operating conditions.

How is the jacket gap width specified?

The gap width is specified in millimeters and is a critical parameter for heat transfer performance. It must be confirmed for the specific reactor model and application.

What should be verified before purchasing a reactor jacket?

Verify model-specific dimensions, material grades, pressure and temperature ratings, and any applicable standards with the legal manufacturer or supplier to ensure suitability for your process.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
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