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Saint Petersburg, Russia

Vasiliev Y.V.,Gipronikel Institute | Platonov O.I.,Gipronikel Institute | Tsemekhman L.S.,Gipronikel Institute
Chemical and Petroleum Engineering | Year: 2011

On the example of modernizing an SRU catalytic reactor of the elemental sulfur production workshop of the Copper Plant of Norilsk Nikel Mining and Metallurgical Company, the possibility is demonstrated of temperature regime optimization for a Claus industrial reactor. Data are presented for two years of inspection before and after catalytic reactor modernization, indicating that due to a change in the scheme for introducing processing gas there is a reduction by an order of magnitude of the temperature gradient within the catalytic reactor and an almost twofold reduction in its overall gas dynamic resistance. © 2011 Springer Science+Business Media, Inc. Source


Vasil'Ev Yu.V.,Gipronikel Institute | Platonov O.I.,Gipronikel Institute | Tsemekhman L.Sh.,Gipronikel Institute
Russian Journal of Applied Chemistry | Year: 2015

Variation of the performance of AOK-78-59 industrial catalyst in the course of 1-year operation in the reactor for conversion of reduced sulfurous gas in the sulfur production line of the Copper Plant of the Polar Branch of the Norilsk Nickel Mining and Metallurgical Company under the conditions of sulfur dioxide excess was studied. Essential differences were revealed in the character and rate of catalyst deactivation in conversion of hydrogen sulfide and carbonyl sulfide, corresponding to the mechanism of hydrothermal aging of alumina catalysts. The results obtained show that it is appropriate to choose catalysts individually for Claus reactors and for hydrolysis of organic sulfur compounds in sulfur recovery units. © 2015 Pleiades Publishing, Ltd. Source


Vasiliev Y.V.,Gipronikel Institute | Platonov O.I.,Gipronikel Institute | Zotikov O.V.,Gipronikel Institute | Tsemekhman L.S.,Gipronikel Institute
Chemical and Petroleum Engineering | Year: 2013

Experience gained from the use of the ADA-900 photometric analyzer at sections for the production of elemental sulfur of the Copper Plant of the Arctic Division of the Norilsk Nikel Mining and Metallurgical Company is analyzed and generalized from the point of view of its reliability and correspondence to the frequency characteristics of the gas that is being diagnosed. A correlation comparison of the concentration of the sulfur-containing components of the process gas following the sulfur collector and a comparison with the data of chromatographic analysis have demonstrated the low reliability of the determination by the ADA-900 analyzer of the concentration of hydrogen sulfide and of the ratio [H2S/SO2] in analyzed gas. Regular and independent calibration of the ADA-900 analyzer is required to achieve reliable monitoring of the Claus ratio in gases. Because of the dynamic characteristics of the sampling system and the optical vessel of the analyzer itself the ADA-900 analyzer may be used in a production process automatic control system TP only where there are no disturbances in the parameters of the process with periods less than ~10 min. © 2013 Springer Science+Business Media New York. Source

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