Gas Generator Research and Development, BI-GAS Process. On-Stream Gas Analysis

摘要

The BI-GAS Pilot Plant, located in Homer City, Pennsylvania, is designed to study a new process for the conversion of coal into pipeline quality gas. The most tangible result and the most important objective of the BI-GAS Pilot Plant has been to build a data base from which economic, process and environmental evaluations can be made. Commercialization is based on those evaluations. It is therefore, necessary to attain a reliable and accurate on-stream gas analysis because it plays a big part in building that data base. Efforts to do that required solving several problems in sampling techniques and analyzing procedures. Five major problems surfaced as a result of the development work in on-stream gas analysis. Three that were solved successfully were accurate and reliable hydrogen and water concentration determinations, and high pressure and temperature sampling of a dirty gas. One of the problems that still needs work is in the area of chromatographic analysis of ammonia and hydrogen sulfide. Separation of the gasification products is not yet clean and therefore an accurate concentration determination not yet possible. The other problem still unresolved is in the sampling of the gas washer overhead line. Except for analyzing for ammonia in the presence of hydrogen sulfide, the analysis of all streams are accurate enough for use in material and energy balances and for control of plant operation. (ERA citation 05:011056)