Quantification of flow hydrodynamics in pulse thermogravimetric analysis systems

✍ Scribed by D. B. Dadyburjor; J. W. Dean

• Publisher: American Institute of Chemical Engineers
• Year: 1987
• Tongue: English
• Weight: 524 KB
• Volume: 33
• Category: Article
• ISSN: 0001-1541
• DOI: 10.1002/aic.690331109

✦ Synopsis

A test has been designed and used to compare flow hydrodynamics in different thermogravimetric analysis (TGA) systems used as pulse microreactors. The ,test involves passing a pulse of injectant over the sample pan containing an adsorbent. Water and zeolite are used in the present case. The technique is easily performed and is insensitive to variations in temperature. A model is developed by which the fraction of gas pulse bypassing the sample pan within the TGA can be obtained. In gas/ solid reactions, either catalytic or noncatalytic, the test should prove useful for comparing TGA extent-of-conversion data to similar measurements taken from other reactor configurations, carrier flow rates, and flow geometries.