Terry A. Ring Chemical Engineering University of Utah

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Presentation transcript:

Terry A. Ring Chemical Engineering University of Utah AIChE Project Week 1 Terry A. Ring Chemical Engineering University of Utah

Consequences Analysis http://www.che.utah.edu/~ring/Design%20II/Excel%20Files/ConsequenceAnalyser.xls Excel Sheets Release Rate Gas Flammability Test Consequence Input Down Wind Concentrations Bursting Vessel Fireball Damage Explosion Blast Damage Internal Calculation Pages Input Cells Output Cells

Consequences Analysis http://www.che.utah.edu/~ring/Design%20II/Excel%20Files/ConsequenceAnalyser.xls Gas/Liquid Chemistry – Composition Flammability Lower Explosion Limit (LEL) O2 requirement for combustion P&T & Chemistry Vapor Pressure Viscosity Release Rate Hole size Pipe size Consequence Input – Choose Distances Release Rate At elevation Into wind Downwind concentration Exphixiant Poison Vessel Burst Energy Release Damage to surroundings Projectiles Fireball Thermal Radiation Damage Vapor Cloud Explosion Explosion Damage

ERPG-Levels The three ERPG tiers are defined as follows: Odor Detectible The three ERPG tiers are defined as follows: ERPG-3 is the maximum airborne concentration below which nearly all individuals could be exposed for up to 1 hour without experiencing or developing life-threatening health effects. ERPG-2 is the maximum airborne concentration below which nearly all individuals could be exposed for up to 1 hour without experiencing or developing irreversible or other serious health effects or symptoms which could impair an individual's ability to take protective action. ERPG-1 is the maximum airborne concentration below which nearly all individuals could be exposed for up to 1 hour without experiencing more than mild, transient adverse health effects or without perceiving a clearly defined objectionable odor. 10-49% of LEL https://www.aiha.org/get-involved/AIHAGuidelineFoundation/EmergencyResponsePlanningGuidelines/Documents/2016%20ERPG%20Table.pdf

Questions Answered Last Week How to determine Tie lines for Triangular Diagram. Aspen Choose Correct Thermo Package Exercise 02 Powerpoint Choose components You will vary the composition for different Tie lines Set up a 3 phase flash With a small amount of vapor produced Light Liquid Comp One end of tie line Heavy Liquid Comp Other end of tie line

Questions Answered Last Week Since the problem statement gives Hysis screen shots, should we use Hysis for the simulation? You can use any simulator for this problem. For Kinetics in Aspen Aspen Units For Kinetics in ProMax Chose correct units from pull down menu.

Questions?