Chemical

🧪 Chemical Reactor Internals & Agitators

Shaft with impeller blades, support baffles, dip tubes, spargers — often as welded assemblies

8 Components 1 Materials 3 Processes 8 Standards

What is Chemical Reactor Internals & Agitators?

🧪 Chemical Reactor Internals & Agitators represents a complete system of precision titanium components engineered for Chemical applications. Shaft with impeller blades, support baffles, dip tubes, spargers — often as welded assemblies The system integrates 8 distinct component types manufactured through 3 specialized processes.

Key manufacturing processes for this system include Hot forming plate rolling for reactor hardware geometry, CNC corrosion allowance at 200W fiber laser, TIG welding Grade 2 at 200W fiber laser, Hydrostatic shell test at 200W fiber laser, CNC corrosion allowance with Class 6g gauge, each selected and qualified to meet component-specific requirements.

Engineering & Design Principles

Material: Grade 12 (Ti-0.3Mo-0.8Ni) offers superior corrosion resistance in reducing acid environments at lower cost than Grade 7. High strength and good weldability.

Form: Plate and tube construction is standard for agitator assemblies. Shaft uses bar or tube depending on torque requirements.

Standards & Material Specifications

Standards: ASTM B265 Grade 12 plate, stress-relieved, 100% weld inspection (PT/UT), material cert 3.1, vacuum heat treated per AMS 2750

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Engineering Solution Blueprint

Chemical Reactor Internals & Agitators

Chemical Processing · Pharmaceutical · Energy

1 Part Feature Analysis

Complex weldment assemblies — agitator shafts with impeller blades, baffle plates, dip pipes, sparge rings, distillation column trays, crystallizer scrapers, paddle dryers with ribbon flighting

  • ⚠️ General corrosion from process acids (HCl, H2SO4, HNO3)
  • ⚠️ Crevice corrosion under gaskets and deposits
  • ⚠️ Erosion-corrosion from catalyst particles in slurry
  • ⚠️ Galvanic corrosion at bi-metal weld joints
  • ⚠️ Thermal cycling fatigue of thin linings

2 Material Selection Rationale

Grade 7 Ti-0.15Pd — Pd modified, strong acid resistant

Grade 7 (Ti-0.15Pd) is the preferred alloy for chemical reactor internals — the Pd addition (0.12-0.25%) shifts the corrosion potential anodically, providing resistance in reducing acid environments where Grade 2 fails. Grade 12 for higher strength in oxidizing media. Grade 5 for agitator shafts under torsion.

3 Form Selection Rationale

Seamless Tube — for fluid systems, heat exchangers

Seamless tube for dip pipes and sparge rings. Plate welding for agitator blades, baffles, and trays. Forged bar for agitator shafts.

4 Manufacturing Process & Services

Core Processes:

Plate cutting + forming of impeller bladesTIG/MIG welding of weldmentsCNC machining of shaft couplings and flangesStress relief annealing of weldments

Toll Processing Services:

Ferrite testing of Ti weldsHydrostatic/pneumatic testingDye penetrant inspection (PT)Pickling & passivation per ASTM B600

Process Pitfalls:

  • ⚠️ Ti weld discoloration (blue/purple) indicates oxidation >250ppm O2 — requires argon back-purge at >20L/min
  • ⚠️ Agitator shaft straightness must be <0.5mm/m to prevent bearing overload at operating RPM

5 Procurement Specifications

ASTM B265 Grade 7 / Grade 12, annealed, 100% PT of welds, hydrostatic tested, MTC per EN 10204 3.1

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Manufacturing Process Flow

1
CNC profiling of impeller blades

5-axis CNC milling centers provide simultaneous multi-axis interpolation for complex titanium components. The ability to tilt the tool relative to the

2
Dynamic balancing

Professional manufacturing process for titanium components. Dynamic balancing is performed by certified technicians following approved procedures and

3
TIG welding of assemblies

Gas Tungsten Arc Welding (GTAW/TIG) for titanium uses a non-consumable tungsten electrode with argon shielding at the torch face, trailing shield, and

Components in This System

Component Material
Titanium Catalyst Basket Mesh Liner Grade 12 Ti-0.3Mo-0.8Ni
Titanium Chlorine Compressor Impeller Grade 12 Ti-0.3Mo-0.8Ni
Titanium Heat Exchanger Tube Bundle Grade 12 Ti-0.3Mo-0.8Ni
Titanium Heat Exchanger Tube Sheet Grade 12 Ti-0.3Mo-0.8Ni
Titanium Reactor Agitator Shaft Grade 12 Ti-0.3Mo-0.8Ni
Titanium Reactor Impeller Blade Grade 12 Ti-0.3Mo-0.8Ni

Frequently Asked Questions

What titanium grades are used in Chemical Reactor Internals & Agitators systems?
Chemical Reactor Internals & Agitators components are manufactured from Grade 12 Ti-0.3Mo-0.8Ni. The specific grade is selected based on mechanical property requirements, corrosion resistance needs, and Chemical industry regulations.
What manufacturing processes are used for Chemical Reactor Internals & Agitators?
The Chemical Reactor Internals & Agitators system components are produced using Hot forming plate rolling for reactor hardware geometry, CNC corrosion allowance at 200W fiber laser, TIG welding Grade 2 at 200W fiber laser, Hydrostatic shell test at 200W fiber laser, CNC corrosion allowance with Class 6g gauge, TIG welding Grade 2 with Class 6g gauge. Each process is selected and qualified to meet the specific dimensional, metallurgical, and surface requirements of each component within the system.
What quality standards apply to Chemical Reactor Internals & Agitators components?
Chemical Reactor Internals & Agitators components are manufactured to ASME B31.3 (woven mesh applied), ASME B31.3 (wet chlorine applied), ASME B31.3 (seamless tube applied), ASME B31.3 (tube sheet applied), ASME B31.3 (autoclave agitator applied) and other applicable specifications. Full material traceability, dimensional inspection reports, and certificates of conformance are provided with each shipment.
What industries use Chemical Reactor Internals & Agitators?
Chemical Reactor Internals & Agitators systems are deployed in Chemical, Chemical Processing applications. Each industry has specific regulatory and performance requirements that drive material selection and process qualification.
Can you provide DFM feedback for Chemical Reactor Internals & Agitators designs?
Yes. Our engineering team provides free Design for Manufacturability (DFM) analysis for Chemical Reactor Internals & Agitators projects. Upload your CAD file (STEP, DXF, or DWG format) and our team will review your design within 24 hours.

Engineering Trends

  • ▸ Process: CNC profiling of impeller blades
  • ▸ Process: TIG welding of assemblies
  • ▸ Process: Dynamic balancing

Related Manufacturing Capabilities

These specialized processes support Chemical Reactor Internals & Agitators component manufacturing.

CNC profiling of impeller blades Dynamic balancing TIG welding of assemblies
About Boze Titanium Manufacturing Center

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Boze CNC Ti is the dedicated titanium manufacturing center of Baoji Boze Metal Products Co., Ltd.

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