PreFEED corporation solution for R&D to Design

Tips to Scale-up & Design


New Method of Analysis of Plant Data (1402)
Methods such as modeling and multivariate analysis are widely used to analyze experimental data and plant data. However, within the large amounts of data collected by DCS and the like, temporal variation factors also increase, and it is often impossible to clearly identify correlations due to the influence of many factors. In such cases, it is often useful to index the data to several levels in terms of "abnormal or normal" and the like, and to examine the relationships between the indexes. This method (discretized data analysis) is introduced here. (Y. Kumagae)
Introduction to Rules of Thumb (4) - Pressure Vessels - (1507)
The design of a chemical plant must be carried out strictly on the basis of theory and data, but in the initial examination stage where F/S and the process purposes are to be determined, promptness is required rather than accuracy, and in this regard simple rough calculation methods and common sense design values are very effective. Such methods and design values are given names such as “Conceptual Process Design” or “Rules of Thumb”. They are kept by individuals or at a company level and are often published as documents. In this report, based on “Rules of Thumb: Selecting and Designing Equipment” by S. M. Walas (Chemical Engineering, March 16, 1987), the introduction of Rules of Thumb is compared with the contents described in handbooks and the like. (Document no. 4: Pressure Vessels). (Y. Kawai)
Differences between Batch and Continuous Operations (1002)
Batch operation and continuous operation are often selected according to production rates, but equipment performances may differ depending on the unit operations. Laboratory experiments are conducted in batches, and when plants are made continuous, it is necessary to fully consider how the results obtained in batches will change when operations are made continuous. In this presentation, we will discuss reaction and evaporation operations, which often lead to different results in batch and continuous operations. (Y. Kumagae)