Results of Processing Data from the Automated Seismometric Monitoring System of the Zeya HPP

Power Technology and Engineering - The results of processing annual data of the automated seismometric monitoring system (ASMS) of the Zeya HPP are presented. They are compared with the results of...     

Optimizing the catalyst circulation ratio in a reformer with a moving bed via a combination of real and computational experiments

During the operation of continuous catalyst regeneration reformers, the problem of optimizing the catalyst circulation ratio in the reactor-regenerator system arises. This problem is solved by a combination of real and computational experiments to investigate the regularities of coking on a catalyst’s surface. Based on TGA results for industrial Pt-Sn/γ-Al₂O₃ catalyst, it is concluded that amorphous coke is formed on the catalyst’s surface during reforming, its quantity at the reactor block outlet being 4–6%, depending on the feed composition and technological parameters of the process. The specific surface of samples is 152 m²/g for the fresh catalyst, 140 m²/g after regeneration, and 118 m²/g at the reactor outlet, which correlates with the quantity of coke on the surface of samples. Mathematical analysis of the coking processes in a reformer with a moving bed show that the catalyst circulation ratio must be maintained in the range of 0.008–0.010 m³/m³ to increase the operating efficiency of an industrial unit. Maintaining optimal conditions enables us to control the coking process, keeping coke concentration as low as possible and the catalyst specific surface as high as possible.     

The detection of periodically located isotropic point sources of ionizing radiation

The possibility of derecting isotropic sources of ionizing radiation, located periodically along a line (not necessarily a straigh line) is investigated by computer modelling. Numerical relations which impose limitations on the possibility of detecting these sources are obtained. Translated from Izmeritel'naya Tekhnika, No. 4, pp. 70–71, April, 2000.     

Dependence of the probability of detecting a moving source of ionizing radiation on various parameters

The dependence of the probability of detecting a moving source of ionizing radiation on various parameters is investigated by computer modeling. A modeling procedure is developed, and graphs of the resulting dependences and the optimum values of the parameters are given. Translated from Izmeritel'naya Tekhnika, No. 11, pp. 52–54, November, 1999.