Ultrasonic inspection of boiler tubes: Materials Evaluation, Vol 26, No 6 (June 1968) pp 106–108, 119

Abstract

In recent decades, the production of solar cells, along with the associated technologies has become important research topics in the field of chemical engineering, due to the increasing application of solar energy. The solar cell manufacturing is based on solar grade silicon, which can be obtained by decomposition of silane to trichlorosilane. The production cost of this component is highly dependent on the required purity. Proposing a conceptual design of a reactive distillation column (RD) multitasking for producing high purity silane is presented as well as monochlorosilane and dichlorosilane. The latter also being products of great commercial and industrial interest in the energy sector. It also set the objective of scheduling the operating conditions to ensure optimum dynamic performance. It has been shown that it is feasible to obtain a single multitasking design, in which the three products of interest are obtained in the dome of the column, this varying operating conditions such as reflux ratio and reboiler heat duty so that it remains the system under stable conditions. It was possible to obtain purities of 99.5% for all three products and the complete conversion to trichlorosilane silane through a reactive distillation column. In this paper, the properties of said column control were also evaluated. In order to observe the dynamic behavior of the multitasking reactive distillation column, this system is tested under various control strategies: temperature, composition and cascade (temperature/composition). Monitoring results shows that the composition and temperature control structures are the best configurations, as it provides dynamic advantages, but in general with those three control strategies a good dynamic behavior could be observed.