Vacuum evaporator with the electrochemical generator on oxyhydrogen cell

The article deals with the improvement of the food and pharmaceutical industry heat-exchange equipment. Moreover, the article shows a problem of relevance of evaporation improvement in the technology of biologically active additives (BAA) from wild-growing vegetable. The possible usage of the electrochemical generator on oxyhydrogen cell for power supply is highlighted. It presents the results of experiments on the device with infrared heating of liquid through a free surface with the vortex for mated from the impeller rotation. The relations between size and form of vortex and a heating rate are shown. The flow sheet containing the generator on oxyhydrogen cell as thermal and electric energy resource for evaporation has been suggested.     

Studying the Chemical and Energy Engineering Process of the Strengthening Calcination of Phosphorite Pellets Containing Free Carbon

The chemical and energy engineering processes of sintering and calcination, which are of practical importance in the chemical and energy engineering system of the thermal treatment of phosphorite pellets containing free carbon, have been studied. They are thermally activated processes that occur in phosphate raw materials during heating. Some results of thermogravimetric, thermomechanical, structural, and microray analyses have been presented. The multifactor dependence of the sintering and calcination of coke-containing phosphorite pellets has been revealed. The dependence of the strength of phosphorite pellets and the degree of coke burnup on the temperature and the coke content in different heating regimes and the change in the weight and relative expansion of the material of pellets in oxidative and neutral media depending on the coke content and the heating rate have been established.     

Generalized Model for Engineering and Controlling a Complex Multistage Chemical Energotechnological System for Processing Apatite-Nepheline Ore Wastes

Theoretical Foundations of Chemical Engineering - A comprehensive formulation for the problem of engineering applied to a multistage chemical energotechnological system for the production of...     

Multicomponent Fuzzy Model for Evaluating the Energy Efficiency of Chemical and Power Engineering Processes of Drying of the Multilayer Mass of Phosphorite Pellets

A multicomponent fuzzy model was proposed for evaluating the energy efficiency of the chemical and power engineering processes of the drying of a dynamic multilayer mass of phosphorite pellets in a complex multistage chemical and power engineering system (roasting conveyor machine). The developed model includes a set of fuzzy component models for analyzing the chemical and power engineering processes of pellet drying corresponding to the results of the decomposition of these processes, a set of neuro-fuzzy production models for evaluating the energy efficiency of the individual stages of the chemical and power engineering processes of pellet drying, and a neuro-fuzzy production model of generalized evaluation of the energy efficiency of the chemical and power engineering process of pellet drying. The use of the proposed model makes it possible to evaluate the energy efficiency of both the individual stages and, in general, the chemical and power engineering process of phosphorite pellet drying under conditions of uncertainty of their thermophysical characteristics and the processes themselves; to perform online structural adjustment and parametric adaptation of the model when the mode and chemical and power engineering process of pellet drying are changed; to perform online evaluation of the energy efficiency of the chemical and power engineering process of pellet drying; and to provide quality improvement and speed of decision making on optimization of the chemical and power engineering process of pellet drying to increase the energy efficiency of these processes.     

Principles of project management in the field of nanoindustry

Prerequisites of the transfer to integrated project control in the field of nanoindustry, which comprises all stages of the life cycle of innovative nanoproduction, have been considered. Structural relationships between the directions of nanoindustry have been demonstrated and a management statement that assumes the complex character of these relationships has been considered. Principles of project management in the field of nanotechnologies that reflect the character of these projects, their structure, the composition of participants, and other factors that determine the features of the solution of management problems have been suggested.     

Study of the thermal characteristics of phosphate raw materials in the annealing temperature range

In this paper, the thermal characteristics of phosphate raw materials have been studied, including thermal conductivity and volumetric heat capacity in the temperature range that has practical significance in the chemical and technological system of thermal preparation of raw materials. The method of the regular regime of the third kind and the method for solving the inverse heat-conduction problem have been used based on the joint solution of the equations of heat transfer and the kinetics of chemical reactions taking into account the most important accompanying phenomena. A dilatometric analysis of the studied samples of phosphate raw material has been presented.     

Project management in the nanotechnology industry: Specifics and possibilities of taking them into account

The characteristics of projects in the nanotechnology industry are considered from the viewpoint of resource provision and conditions of realization, and the specifics of project management problems in the nanotechnology industry are shown. The advantages and disadvantages of the most widespread project management methods are shown, and the possibilities of their application to project management problems in the subject area are evaluated. A project simulation approach based on the use of temporal logic tools is proposed. The advisability of developing branching point-interval time methods for the simulation of nanotechnology projects is substantiated.     

Scientific basis of effective energy resource use and environmentally safe processing of phosphorus-containing manufacturing waste of ore-dressing barrows and processing enterprises

Waste barrows of ore-dressing and processing enterprises have a special role among anthropogenic deposits where fine finders are stored, intensifying their amenability to wind and water erosion. Rock barrows occupy much larger territories than factory lands, leading to environmental pollution. Herein, we create a fundamental physical and chemical basis for the effective use of energy resources and environmentally safe processing of ore-dressing waste products, which allows for transformation of raw fine finders stored in tailing dumps into competitive products and decreases the amount of resources aimed toward ground disposal. It will also assure the extermination of tailing dumps and grounds. This can also minimize negative environmental impact and stabilize further development. For this purpose, a mathematical model of a complex chemical energy technological system (CETS) aimed at manufacturing phosphorite pellets has been developed. Large-scale models of multistage chemical energy technological processes of baking and coking moving dense multilayer masses of phosphorite pellets, which differ in their raw material physical, chemical, and granulometric characteristics, have also been developed. Additionally, special multilayer algorithms for formulating making decisions concerning optimal energy resource effectiveness management of CETS manufacturing phosphorite pellets have been developed. They differ in the quality ratings of the prepared pellets in the characteristics of raw phosphate materials. These calculations also consider the impact of controlling the actions of temperature and speed of gas supply for the exchange of having a dynamic dense multilayer pellets mass, which allows for using an available potential of increased effectiveness to maximize energy resources of CETS.

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Analysis of the Thermophysical Processes and Operating Modes of Electrothermic Reactor Using a Computer Model

Based on the proposed algorithm for the computer simulation of thermophysical processes in an electrothermal ore-reduction reactor, the finite element method was used to analyze the regime parameters of the working volume. In this case, the computer calculation of the interconnected thermal-hydraulic fields has been carried out for the entire volume of the reactor. A comparison of the results of the computational experiment with the experimental data on the reactor survey and physical modeling data has shown quite satisfactory agreement. Based on an analysis of the reactor operation modes, regime maps have been presented that provide an idea of the change in technical and economic indicators depending on the control parameters. This information allows operators to know the trends in the behavior of the reactor when the regime changes.