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Safely scale‐up processes and accommodate recipe changes
Author(s) -
Theis Amy E.,
Burelbach James P.,
Askonas Charles F.
Publication year - 2009
Publication title -
process safety progress
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.378
H-Index - 40
eISSN - 1547-5913
pISSN - 1066-8527
DOI - 10.1002/prs.10287
Subject(s) - hazard and operability study , operability , recipe , process (computing) , process safety , process engineering , reliability engineering , upset , scale (ratio) , work in process , computer science , hazard , reaction calorimeter , risk analysis (engineering) , engineering , operations management , mechanical engineering , calorimetry , chemistry , medicine , physics , food science , organic chemistry , quantum mechanics , thermodynamics , operating system
Thermal hazards screening can be quickly and cost‐effectively performed to obtain the required data for the safe scale‐up of chemical processes and to accommodate changes to process recipes. Before scale‐up, it is vital to identify safe temperature and pressure operating ranges, quantify the heat generated from a reaction, and the number of moles of gas generated. It is also prudent to determine the heat and gas generation rates to safely accommodate the reaction in the given process equipment. These rate data can also be used to verify the adequacy of the existing pressure relief system design. Process Hazard Analysis (PHA) and Hazard and Operability (HAZOP) reviews identify credible upset scenarios, and data are required to address these issues. When a process recipe or batch size is changed, data are necessary to quantify the effect of the change on the above parameters. For modifications to existing processes, a management of change review should occur. Data addressing issues resulting from these reviews are readily available by performing calorimetry experiments with the Advanced Reactive System Screening Tool and similar calorimeters. Examples of these applications are included in this article. © 2008 American Institute of Chemical Engineers Process Saf Prog, 2009