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In work explored effect of mixed metallic fuel on the thermodynamic and ballistic characteristics of High-Energy Materials (HEMs). Efficiency of mixed metallic fuel estimated in relation to the characteristics of HEMs, containing conventional metallic fuel - aluminum. The main criteria of comparison are the specific impulse and the composition of the combustion products HEMs.

The polyvinylchloride (PVC) differs from other polymer materials by low thermostability. The process of dehydrochlorination takes place even at low temperatures. The purpose of this investigation was todetermine the influence of different PVC additives on formation of hydrogen chloride (HCl) from thermal degradation in different gaseous fluids. It has been established that the HCl formation takes place more innitrogen as a medium than in air medium at a given temperature, especially for the high temperature region. Dibutyl phthalate (as a plasticizer) in 25 mass % w.r.t. PVC, reduces the mass loss due to HClformation by about 5%, which is the result of two interaction processes - between HCl and plastifier degradation products. It has been found that the addition of 5 mass % of stabilizer in PVC slows down theprocess of dehydrochlorination and as a result the loss of mass is 2-5% less, compared to non-stabilized samples. Calcium carbonate as a filler was found to be active above 400-500 °C and reduction in mass losswas found to be up to 15% at a temperature range of 800-900 °C. Calculation of kinetic parameters shows that the rate of dehydrochlorination depends on the composition of PVC. The activation energy of formation of HCl in air, in a temperature range of 400-600°C has been found to be 12.7, 13.3, 16.1 kJ/mol for pure, plasticized and stabilized PVC, respectively. The results reported here shall be useful for development of methods for waste utilization and their influence on the environment.

The data on mathematical modeling of simultaneous chlorine and hydrogen chloride absorption by alkaline solutions are given in the paper. The purpose of the paper is to analyze the sanitary column operation and develop the mathematical model of exhaust gas purification from chlorine and hydrogen chloride. The exhaust gas neutralization process proceeds in countercurrent absorption columns, which are irrigated by the alkaline solution. Mathematical model of the process includes a system of differential equations of component-wise material balance. The material balance equation system describes the change in the component concentration according to the column height. The equation system is written taking into account the assumptions that the process is isothermal, proceeds in the full displacement in both phases; only hydrogen chloride and chlorine are absorbed from the gas flow and chemisorption reaction in the liquid phase runs immediately. The reaction surface in this case coincides with the interface, the reaction proceeds in the external diffusion region. The process rate is determined only by the diffusion rate of the components from the gas flow to the reaction surface. The actual kinetics is not taken into account. The equations of the mathematical model allow to calculate the concentration profiles of the components according to the column height. Using the mathematical model of chemisorption of two gases allows to make calculations of similar columns at the design stage and the stage of production process investigation., В работе приводятся данные по математическому моделированию одновременной абсорбции хлора и хлористого водорода растворами щелочи. При моделировании предположено, что реакции в жидкой фазе являются мгновенными и протекают в области внешней диффузии., У роботі наводяться дані з математичного моделювання одночасної абсорбції хлору і хлористого водню розчинами лугу. При моделюванні припущено, що реакції в рідкій фазі є миттєвими і протікають в області зовнішньої дифузії.

The paper gives the data on mathematical modeling of simultaneous absorption of chlorine and hydrogen chloride by alkaline solutions. The mathematical model of the process includes the system of differential equations of component-wise material balance and the system of kinetic equations. The system of material balance equations describes the change in concentrations of components along the column height. For its solving it is necessary to know the numerical values of chemisorption acceleration coefficients. They are determined from the system of equations describing the inetics of chemisorption. The gradients of components oncentrations create various conditions of mass transfer processes along the height of the column. This leads to the fact that in one unit there can be various zones of hemisorption process along the height of the packed layer. Each zone is characterized by its reaction order for absorbing component and its kinetic constants. Various zones of the course of binary absorption with chemical reaction were considered. Taking into account the zones, the mathematical model of chemisorption was designed for the countercurrent packed absorber. The peculiarity of the developed mathematical model is the lack of iterative algorithm for calculation. The use of band mathematical model of chemisorption of two gases allows calculation of similar columns at the stages of design and research of industrial processes. The results can be used for calculation and optimization of existing columns of gas emission neutralization in organochlorine production., В работе приводятся данные по математическому моделированию одновременной абсорбции хлора и хлористого водорода растворами щелочи. В основу математического описания процесса положена модель вытеснения. Рассмотрены различные области протекания двухкомпонентной абсорбции с химической реакцией по высоте колонны., У роботі наводяться дані з математичного моделювання одночасної абсорбції хлору і хлористого водню розчинами лугу. В основу математичного опису процесу покладена модель витіснення. Розглянуто різні області протікання двокомпонентної абсорбції з хімічною реакцією по висоті колони.

Показано, что промышленный ванадиевый катализатор окисления диоксида серы ИК-1-6 активен в процессе окисления хлористого водорода в молекулярный хлор (производительность до 180 грамм хлора на килограмм катализатора в час при 400 оС). Показано, что катализатор стабилен в течение 6 часов и предложены пути создания стабильно работающей каталитической установки для производства хлора., Industrial vanadia catalyst for SO2 oxidation, IK-1-6, was shown to be efficient in a process of hydrogen chloride oxidation into molecular chlorine. The productivity of the catalyst attains values of 180 grams of chlorine per kilogram of catalyst per hour at 400 oC. The catalyst was shown to be stable for 6 hours. A way to create a stable-operating catalytic system for chlorine production is suggested.