This article analyzes the existing water treatment technologies and consider aspects of the effectiveness of implementation of reverse osmosis on TPP.
Introduction of new technologies for water treatment TPР
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This article analyzes the existing water treatment technologies and consider aspects of the effectiveness of implementation of reverse osmosis on TPP.
The article provides the analysis of the existing heatinsulating materials and the experience of using modern heatinsulating materials for a thermal protection of power boilers.
The article considers the methods of rationalizing the process of heating the refractory materials of aluminum electrolyzers up in relation to thermal stresses arising in the hearth lining. The functional goals of the refractory materials are listed. The operational characteristics of the refractory materials are presented. During thermal influence on a hearth lining, the physical effects called thermal expansion occur. The materials which save their properties under high temperature are known as refractory materials. The thermostability is described in more detail. The scientific test bench was used to investigate ultimate strength. The method of temperature and pressure measurement when conducting the experiments is cited. In order to choose the potlining it is necessary to know the peculiarities of refractory materials and actual industrial loadings as precisely as possible.
One of the directions of energy saving is the application of heat pumps by means of which it is possible to use low-potential, usually waste heat. The question of the possibility of using heat pumps in thermal power plants is considered in the present article. Also a diagram of possible use in thermal power stations of low-grade waste heat with heat pump installation is presented in the article.
This article discusses the use of ash and slag waste such as ash or slag boilers and thermal power plants of Pavlodar region. We describe the main source of energy today. Produced by laboratory analysis of the composition of the ash. A basic installation for the processing of the ash. It presents the possibility of using fly ash in building materials industry.
The paper presents the thermal design of the building heating system of a four educational building № 1 Eurasian innovative university.Data are presented for the period from 1 December to 28 February for three seasons: 2013–2014, 2014–2015, 2015–2016 years. On the basis of the actual thermal design graphics and design of heat were built in the period from 1.12. at 28.02 for three seasons (2013-2014,2014-2015, 2015-2016 years). In these graphs clearly visible difference between the two values. According to calculation, the average difference was 13.02 % of the actual heat consumption.
Different diagrams of thermal pumps operation at thermal power plants are considered in the article. Thus, installation diagrams are considered for thermal pump based on the use of low -grade heat of turbo-unit lubricating system oil and blow-down water of a steam generator.
One of the agent modern tasks is to ensure the cleanliness of the air basin. To ensure this, it is necessary to clean the combustion products of the fuel removed from the boilers after their cooling into the atmosphere from harmful substances, including nitrogen oxide.
Main problem: The use of waste heat is most often solved by installing heat exchangers, but this is not effective when the temperature of this heat does not exceed 10-15 0 C, in which case this heat can be used using a heat pump. Where can I get this heat? Almost any enterprise needs cooling of any equipment elements or substances – working fluids; the heat received from them can be sent to a heat pump and used here at the enterprise. Purpose: Consideration of the possibility of using the heat of cooling water from the pump CNS 60-165 and the proposal of a new scheme with the installation of a heat pump that uses this heat. Methods: This is achieved due to the fact that it is proposed not to discard the heat, but after its use in the heat pump evaporator, transfer it to the heated medium - water, which is then sent to the shower cabins of the enterprise. Since the showers are located in the same room, the cost of transporting heat and losses will be minimal. Methods: In the course of the research, the possibility of using the waste heat of an industrial enterprise for using it here at the enterprise for the purposes of hot water supply was considered. For these purposes, it is proposed to install a heat pump, thanks to which the thermal potential increases, which makes it possible to fully use the received heat. Results and their significance: As the experience of foreign countries has shown, heat pumps can be widely used in many industrial enterprises, and in conditions of increased competitiveness, in order to reduce energy costs and the cost of manufactured products, install heat pumps to utilize excess heat, for example, process water, which is available in many production allows you to have a significant economic effect.
Main problem: recently, much attention has been paid to energy saving in production, especially when it comes to industrial units that burn fuel. There are several ways to maximize the use of the heat released during the combustion process, for example, to reduce the temperature of the flue gases at the outlet of the unit, by maximizing its use, both in the technological process itself and by installing additional heat-receiving units, for example, air heaters or other heaters. Another way to save money is to reduce heat losses through the lining of these high-temperature units. Metallurgical units that consume a large amount of energy and fuel require an analysis of their consumption, and ways to save their consumption based on the results of the analysis. Purpose: this article considers the possibility of replacing the existing inner insulation layer of the second and third sections of a high-temperature unit - a metallurgical furnace, with a new one with better technical and economic indicators. Methods: the possibility of replacing the existing inner insulation layer of the second and third sections of the high-temperature unit with a new one, with the best technical and economic indicators, was considered. The calculation of heat losses by thermal conductivity through the side surfaces and the roof with new insulation was performed, and the economic efficiency of the proposed solution was proved. Results and their significance: replacing the existing inner layer of insulation - refractory concrete PHLOCAST M30 (thermal conductivity coefficient from 1,4 to 1,45) with the proposed CERALIT GUN HK 70070 (thermal conductivity coefficient from 1,03 to 1,12) will reduce heat loss to the environment, and thus to reduce fuel consumption for the furnace.
The article is devoted to the study of the main types of retort packaging, as well as polymer and combined materials used for its manufacture. The authors have compiled a classification of retort packaging presented on the modern market, investigated the technological properties of packaging materials, and also determined the requirements for modern retort packaging: resistance to sterilization at a temperature of at least 120°C, steam and moisture resistance, chemical inertia to canned products, tightness, low gas permeability. It has been established that in order to give the retort packaging the required properties, it is made of multilayer polymer or combined materials, each of the layers of which performs certain functions. It is determined that due to the barrier properties of polymer and combined materials with respect to oxygen, retort packaging provides shelf life of canned products up to 5 years, which allows the use of retort packaging made of polymer and combined materials as an alternative to glass and metal packaging. In experimental studies, the composition of the outer layers of modern retort packaging was analyzed and it was concluded that polypropylene or polyethylene terephthalate are most often used, since these polymer materials are thermally and chemically resistant, vapor- and moisture-proof. It is established that materials that are barriers to gases are used as the middle layer – aluminum foil, metallized films, ethylene vinyl alcohol, polyamide. It is proved that polymer co-extrusion, multilayer injection molding or lamination is used for the manufacture of such materials and packaging. The data obtained indicate the high barrier properties of combined packaging materials, therefore, the thermal and chemical stability of the polymer and combined materials used makes it possible to use retort packaging for packing almost all groups of canned products.