Technical Specifications of AKU Kettle Reboiler
(Based on TEMA Naming Convention)
It should be noted that "AKU" is not an official TEMA designation. In industry practice, AKU typically refers to an Accessible Kettle-type Reboiler, which combines a removable front cover with kettle-type boiling design. Below are the technical parameters:
1. Naming Convention Analysis (Industry Practice, Non-TEMA Official)
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o A: Front Head Type (A = removable flat cover for maintenance and cleaning).
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o K: Shell Type (K = Kettle-type shell).
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o U: Rear Head Type (U may denote "Utility" or "User-friendly", emphasizing maintainability).
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o AKU is not a standard TEMA code but a customized name used by end-user for accessible kettle reboilers.
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o Its design combines features of TEMA K-type shell (kettle) and A-type front head (removable cover).
2. Key Technical Parameters (Based on Accessible Kettle Design)
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Parameter
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Typical Value/Range
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Remarks
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Design Standard
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ASME VIII Div.1 / TEMA K
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Standard for kettle reboilers
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Heat Transfer Area
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50~2000 m²
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Immersed tube bundle design
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Design Pressure (Shell Side)
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0.5~6.0 Mpa (5~60 bar)
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High-pressure models up to 10 Mpa
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Design Temperature
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-50°C to +400°C
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High-temperature models up to 450°C
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Shell Material
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Carbon Steel (Q345R) / SS304 / SS316L / Clad Plate
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Corrosion-resistant options
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Tube Bundle Material
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SS304 / SS316L / 2205 Duplex / Titanium
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Anti-cavitation design
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Tube Diameter/Length
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Φ19~Φ50 mm / 3~12 m
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U-tube/straight tube options
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Heat Source
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Steam (0.3~1.5 Mpa) / Thermal Oil / Molten Salt
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Multi-energy compatibility
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Vaporization Rate
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30%~100%
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Adjustable per column demand
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Level Control
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Auto-level gauge + control valve
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Dry-run protection
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Removable Front Cover
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A-type flat cover + bolted connection
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For tube inspection and cleaning
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Connection Standard
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ANSI / DIN / GB Flanges
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DN150~DN800
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3. Structural Features
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o Removable Front Cover (A-Type): Bolted flat cover allows tube bundle inspection and shell bottom cleaning.
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o Kettle-Type Shell (K-Type): Large-volume shell provides stable boiling space; top-mounted demister reduces liquid entrainment.
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o Immersed Tube Bundle: Tubes fully submerged for high vaporization efficiency.
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o Anti-Fouling Design: Removable structure supports mechanical cleaning, suitable for fouling-prone media.
4. Typical Applications
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o Petroleum Distillation: Atmospheric/vacuum columns, catalytic cracking units
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o Chemical Separation: High-boiling solvents (e.g., DMF, DMSO) evaporation
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o Pharmaceutical Concentration: Solvent recovery, extract evaporation
5. Data Required for Selection
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o 1.Process Requirements: Vaporization rate (kg/h), inlet/outlet temperatures, operating pressure.
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o 2.Fluid Properties: Composition, viscosity, boiling point, corrosiveness (e.g., Cl⁻, H₂S).
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o 3.Heat Source: Steam pressure or thermal oil temperature.
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o 4.Cleaning Requirements: Determines need for removable structure.
6. Comparison with Standard TEMA K-Type
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Feature
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AKU Accessible Kettle Reboiler
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Standard TEMA K Reboiler
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Front Structure
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A-type removable flat cover
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Fixed head or simple manway
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Maintainability
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Front cover removable for inspection and cleaning
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Limited access via manway
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Cost
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Higher (complex removable structure)
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Lower
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Fluid Compatibility
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Fouling-prone or inspection-needed media
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Clean or chemically cleanable media
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Note: AKU reboilers require custom design. Directly provide operational requirements to manufacturers-WUXI YITENG.
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