Function – Uses ‘cp’ files on process streams (feedstocks and products) to assist in determining the cause of poor process performance.

Method –Off-spec products are manifestations of composition. Correspondingly, Troubleshoot surveys composition and compares these results with on-spec compositions. ‘cp’ files are generated on feedstocks and products by taking a sample and processing through the ‘cp’ file generator. Alternatively, files from Monitor can be input to the program. Troubleshoot has a composition reporter that can be used to import files to a spreadsheet for custom data processing. If a Z-model or Z-simulator is available, the feedstock 'cp' file can be fed to the model/simulator and conditions adjusted (catalyst activity, T, P_t, P_H2, contact times, etc.) until the product files match. Leaks in feed/effluent exchangers can be detected by using the Blend application to match results.

Use – Troubleshoot is a tool to elicit compositional information from the process system that is normally difficult to obtain. As conceived, Troubleshoot is not a solution, but is a tool to be used by an experienced engineer.