Material Selection for Construction in Chemical Industry

Jul 19, 2024

Material Selection for Construction in Chemical Industry

Opening Remarks

  • Greetings and opening prayer.
  • Importance of the topic for the final lecture at YPC.
  • Discussion on Material Selection for construction materials in the chemical process industry.

Reference Book

  • Reference: Hansen book on material selection.
  • Handout will be shared at the end with additional resources and reference material.

Material Selection Overview

  • Objective: Selecting materials for the construction of process equipment in the chemical industry.
  • Reference Material: Summary from Hansen and Poyer focusing on selection examples for typical equipment.
  • Content: Covers steel, polymer, ceramics, and composite materials.

Key Factors in Material Selection

  1. Material Type: Examples include metals (steel), polymers, ceramics, and composites.
  2. Properties: Including mechanical, thermal, electrical, optical, and crystallinity of materials.
    • Mechanical: Elastic modulus, strength, etc.
    • Thermal: Conductivity, expansion, etc.
    • Electrical: Voltage, current, resistivity, etc.
    • Optical and crystallinity properties.
  3. Processing Methods: Examples include drawing, welding, metallurgy, casting for metals; extrusion, blow molding for polymers, etc.
  4. Performance: Application-specific requirements and suitability.

Selection Workflow (Algorithm)

  1. Determine Purpose: Example - storing water at 30°C.
  2. Check Properties: Relevant properties like elasticity, corrosion resistance, etc.
  3. Narrow Down Choices: Based on materials (e.g., stainless steel, HDPE, ceramic, etc.).
  4. Select Manufacturing Process: E.g., casting, extrusion based on cost and suitability.
  5. Assess Costs: Relative cost of materials and feasibility.
  6. Finalize Material: Best fit considering all factors - cost, properties, and processing.

Factors Impacting Selection

  • Cost and Energy Required for production.

Example: Pipes for Sulfur Water Service

  • Context: Hydrocarbon industry, high sulfur content.
  • Materials: Carbon Steel recommended (five chrome, 12 chrome), withstands H2S at 65 psi pressure.

Material Properties in Context

  • Example properties for carbon steel, including corrosion resistance.

Practical Exercise and Review

  • Group exercise to analyze examples provided by Hansen.
  • Use Google Docs for submission and detailed analysis.

Advanced Considerations in Material Selection

  1. Material Cost Index and Performance Index (P), considering material strength, weight, corrosion resistance.
  2. Low-Temperature Performance and High-Temperature Stability considerations.
  3. Reliability and Longevity of materials in various operating conditions.

Hansen’s Selection Templates

  • Templates for analyzing and selecting materials for specific needs, including temperature, pressure, composition considerations.

Closing Remarks

  • Overview of key lectures and materials discussed throughout the semester.
  • Encouragement to review and understand Hansen’s methods as presented.
  • Final remarks and prayer.