The possibility of developing a apparatus based on the results of kinetic calculations of the processes, occurring in it, is considered. The studies were carried out with the system solid-liquid-vapor-gas medium with a continuous increase in vacuum above the surface of a layer of the dispersed material. The presence of the liquid phase and the vapor-gas phase in equilibrium with it makes it possible to provide a change in concentration, structure, or cooling in the system due to artificial disturbance of the dynamic equilibrium of the system. To develop a mathematical model of the liquid removal process, a model of ideal mixing in the vapor-gas phase and a layer of the dispersed material was adopted. The calculation results are presented in the form of kinetic dependences of the main process parameters. Calculation of the apparatus is carried out at the highest load in the vapor-gas phase during the period of removal of the free moisture. In this case, the influence of rarefaction on the physical characteristics of the removed fluids and the design features of the apparatus being calculated was taken into account.
The thermal method of increasing the efficiency of high-viscosity fluid transportation is considered, using the example of M100 fuel oil. The graphical dependences of the dynamic fluid viscosity on the temperature, the kinematic viscosity on the consumption of a heating steam and on the power of heating pads provided that high-viscosity fluid is heated, as well as the Prandtl number on the heat output of a heater, are obtained.
The work considers corrosion of the metal elements of the filtration system as an electrochemical process, and also presents the results of the analysis of the swimming pool water using the modern gas chromatographic equipment with a flame ionization detector and highly efficient quartz capillary columns. It was found that the swimming pool water is contaminated with the low-boiling organochlorine compounds and by-products, what is associated with the formation of the hydroxyl radical FeOOH, which occurs as a result of corrosion of elements of the mechanical system.
The paper considers the problem of reducing heat losses in the heat supply systems of the FEC facilities (fuel and energy complex) due to the the use of heat insulation of the pipelines. A comparative analysis of heat insulation of the heat lines: PUF (polyurethane foam), mineral wool, foam rubber, ultrathin heat insulation of the mark “Corund”. The graphical dependences of heat losses and the efficiency factor of heat insulation on a diameter the pipelines are obtained.
This article discusses the use of modified molecular sieves in mechanical filters of water treatment plants and the separation of the gas mixture, as they have sorbing properties to all heavy metals. The main indicators of the quality of separation is the adsorption isotherm, which demonstrates the structure of the adsorbent, the thermal effect of separation and a number of other physical,chemical and technological characteristics. System analysis of technological parameters of mechanical filters increases the operational period of equipment.
The paper deals with the solution of problems to assess the technical condition of thermal mechanical equipment, on the example of boilers by thermography. As a result of the study of the brickwork of the steam hot-water boiler, thermal imaging images were obtained, from which it can be concluded that the brickwork of the boiler does not perform its direct functions, the insulation is outdated. Thus, constant monitoring allows making current repair of machinery, reducing wear and heating loss to maintain efficiency at the project level.
Analysis of the literature revealed a lack of filtering centrifuges, which include the difficulty of regenerating the filtering surface. The presented constructive solutions for its elimination provide only local, but not complete regeneration of the filtering surface. The authors investigated the regeneration of filter elements when the blades rotate around the axis as a result of the engagement of parts of the rotary device. In order to exclude shock loads in the process of turning, various cam designs are considered, the best of which is a fork cam.
The paper describes a method for purification of waste water in a hydrocyclone by solid phase particles. To achieve more efficient cleaning, a technique is proposed for calculating the separation processes in hydrocyclones based on the equation for the radial motion of a particle associated with an air bubble.
The paper presents a theoretical one-dimensional model of the dynamics of adsorption in a fixed layer, taking into account the first-order chemical reaction. The general case is considered when the resistance to mass transfer is concentrated both in the external and internal phases.