METHOD OF CONTROLLING CHANGES OF PHASE COMPOSITION OF GAS MIXTURE IN CLOSED SPACE Russian patent published in 2003 - IPC

FIELD: chemical engineering. SUBSTANCE: invention relates to methods of on-line inspection of formation of superdispersed powders and coatings. Gas mixture is passed into reactor through pipe and, once in reactor, gas mixture is exposed to pulse energetic action by pulse high-current electron beam entering through a window. Emerging standing sound waves are registered by fast-response pressure sensor producing electric signal going on frequency measuring instrument. Change in phase composition of gas mixture is evaluated from the change in partial pressure of corresponding component of gas mixture found from the following expression: where f2s

is frequency of standing sound waves in closed reactor, Hz; R is universal gas constant; T gas mixture temperature, K; l reactor length, m; γ_i index of adiabat of the i_th component of gas mixture; μ_i molar masse of i_th component of gas mixture; and P_i partial pressure of i_th component of gas mixture, Torr. EFFECT: increased accuracy of control. 4 dwg, 1 tbl