Boreskov Institute of Catalysis of the Siberian Branch of Russian ...

PP-II-9A REACTOR FOR DYNAMIC HIGH PRESSURE-TEMPERATUREREACTIONS IN GAS PHASEA. Nikiforov a , U-Hyon Paek b , V. Fedorov aa Nikolaev Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences,Novosibirsk, 630090, Russia; Fax: 7-383-3309489; e-mail: fed@che.nsk.sub Department of Chemistry, Gyeongsang National University, Chinju,660-701, Korea;Fax: +82-55-757-6504; e-mail: uhpaek@nongae.gsnu.ac.krConstruction of reactor for gas reactions at high pressures and temperatures in dynamicregime is proposed. Novelty of the construction consists in several items. The reactorrepresents a system «cylinder-piston» made from aluminium alloys, work surfaces of whichcovered by chemically, mechanically and thermally stable aluminium oxide Al 2 O 3 preparedby thermo-electrochemical oxidation technology. The piston remains static whereas thecylinder is a moving part; this allows to control the technological regimes easily by means ofregulation of pressure in reaction chamber. Necessary air-tightness of system is reachedthanks to size and surface fitting of cylinder and piston without a use of traditional sealingrings. High antifriction characteristics of work surfaces from aluminium oxide allow to refuseoiling of system «cylinder-piston»; this not only prevents a contamination of reactionproducts but also allows to raise the temperature of process without a fear of carbon smut.The design makes provision for efficient system of maintenance of steady-state conditions bymeans of control of basic parameters of process. The simplicity of the construction may be anadvantage in the case of use of similar reactors in the processes of petrochemical synthesis,especially in «field» conditions, for example, at processing of casing-head gas on oil well.289