Transcription of Introduction to Safety in Chemical Process Industry
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Introduction to Safety in Chemical Process Industry
Introduction to Safety in Chemical Process Industry - Chemical Process , Chemical Engineering, Safety /Risk/Hazard/Loss - Kyoshik PARK Department of Chemical Engineering Middle East Technical University - NCC 9/26/2011 METU-NCC 2 9/26/2011 METU-NCC 3 9/26/2011 METU-NCC 4 9/26/2011 5 METU-NCC Rev. Processes Involving Ideal Gas oSummary 9/26/2011 6 METU-NCC Isentropic Expansion dP F C12dP Incorporate friction term: C12dP PoP u 22 gc 0 Ideal gas, isentropic expansion: P = a, Cp/CvIntegrate and solve for u Mass flow rate: Qm CoAPo2gcMRgTo 1 PPo 2/ PPo ( 1)/ 9/26/2011 7 METU-NCC Exposure to Release , Diffusion 3. Gravity 4. Transition 6. Turbulence Predict effects of exposure near the surface. Predict % affected by the exposure. Stages 3 4 5 6 1 2 9/26/2011 8 METU-NCC Gaussian Dispersion Pattern A: stack height B: effective height x y z (0,0,0) Cmax at center Isopleth Cmax Along X u9/26/2011 9 METU-NCC 9/26/2011 10 METU-NCC eeeeaozzzzppObjective How can it be prevented?
Chemical Industry: History I Early to 5,000 BC •First industrial chemical process: fire •Burning wood for heat, cooking food •Firing pottery, bricks History adapted from: R.E. Sanders, Chemical Process Safety, Butterworth-Heinemann (1999) 9/26/2011 METU-NCC 18
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