Thermodynamic modeling and exergy analysis of a heat recovery. This thorough and highly relevant volume examines exergy, energy, and the environment in the context of energy systems and applications, and as a potential tool for design, analysis, and optimization. Exergy analysis is carried out using actual plant operational data. In the current work, thermodynamic and thermoeconomic derivatives in combination with all available constraints have been determined for high temperature shorttime cream pasteurisation plant. The birla cement plant requires 8760 h per year of the total operating hours to produce 1. This paper presents an analysis of energy and exergy based on the clinker. The major goal of the modern cement and concrete production industry is the. Pdf grate coolers which represent one of the pyroprocessing units are extensively used in cement industries. The work performed an energy and exergy analysis of a raw mill and raw materials preparation. Exergy analysis of an igcc plant with co2 separation. An approach to analyse energy and exergy analysis of. Madlool summarized the exergy analysis of cement industry and concluded that the exergy losses of kiln are higher than other units in cement production plant due to its irreversibility.
The plant, powered by two boilers and a 500 kva generator, refines 100 tonnes of crude palm kernel oil cpko into edible vegetable oil per day. In the present paper, cement production in greece has been examined using the exergy analysis methodology. The aim of this analysis is to determine and analyze exergy utilization and their irreversibility in malabar cement plant. Energy, exergy efficiency, cement industry, co 2 emissions, exergy destruction. Dec 01, 2006 cement production has been one of the most energy intensive industries in the world. In order to produce raw materials preparation, clinker and rotary kilns are widely used in cement plants. Exergy calculation this chapter is intended to give the user a better knowledge of exergy calculations in cycletempo. Exergy analysis of combined cycle cogeneration systems colpan, can ozgur m. Comparative energy and exergy analysis for the utilization of. Energy and exergy analyses of egyptian cement kiln plant. Demolition of concrete made constructions and transportation of rubble for landfilling. Energy and exergy analyses of a parallel flow, four stage. For these reasons and others, exergy analysis has been increasingly applied during the past several decades.
Energy and exergy analysis was conducted for a vegetable oil refinery in the southwest of nigeria. In this paper exergy analysis, exergy balance and exergy efficiency birla cement plant satna. Heat recovery from industrial process exergy radial outflow turbine for power conversion processes for all the energy intensive industries exergy can deliver a product with a payback in the range from 3 to 5 years making them more competitive and sustainable in the market. Pdf exergy analysis of cement production christopher. Exergy analysis of thermal processes and systems with. The exergy analysis identifies the area where and how much the loss are occurring, and area of improvements are discussed to improve the efficiency of the power plant. Energy and exergy analyses in a rotary burner with pre. Exergy is not an absolute quantity but a relative one. Progress in exergy, energy, and the environment springerlink. This site is like a library, use search box in the widget to get ebook that you want. Energy and exergy analyses of egyptian cement kiln plant with. This paper deals with an energy audit analysis in a cement plant different strategies are offered to reduce energy losses.
Energy and exergy analysis of coal fired power plant. Energy and exergy analyses of a raw mill in a cement. Concrete and water are chosen as the substance to store energy and heat transfer fluid, respectively, owing to. Dear colleagues, exergy analysis is a powerful thermodynamic technique for assessing and improving the efficiency of processes, devices and systems, as well as for enhancing environmental and economic performance. Thermodynamic modeling and exergy analysis of a heat recovery system in meshkinshahr geothermal power plant, iran behnam radmehr1, sajjad radmehr 2, khosrow bakhtari1 and hooman farzaneh1 1 science and research branch of islamic azad university, environment and energy faculty, tehran, iran. Exergy analyses in cement production applying waste fuel. This document is the 3rd version of the introduction to exergy and energy. Exergy analysis and parametric optimization are carried out to achieve the maximum efficiency. Energy and exergy analyses of a raw mill in a cement production. The exergy efficiency for waste heat recovery system in cement plant can be expressed by 1. Energy and exergy analyses of egyptian cement kiln plant with complete kiln gas diversion through by pass corresponding author.
Exergoeconomics is a unique combination of exergy analysis and cost analysis conducted at the component level to provide the designer or operator of an energy conversion system with information crucial to the design or operation of a costeffective system. In this study, the applications of energy and exergy analyses are examined for a dry system rotary burner rb with precalcinations in a cement plant of an important cement producer in turkey. Heat recovery from industrial process exergy radial. A case study morteza gholipour khajeh a masoud iranmanesh a. Energetic and exergetic analysis of waste heat recovery systems in the cement industry s. According to their study, the energy and exergy efficiencies are determined to be 84. However, the exergy analysis assesses the energy on quantity as well as the quality 14. Exergy and thermoeconomic analysis of cream pasteurisation. Pdf energy and exergy analysis of clinker cooler in the. The energy and exergy efficiency of cream pasteurisation plant was determined to be 86.
The largest fraction of fuel exergy is exported as work, while the largest exergy destruction takes place in the gas turbines combustor. Thermodynamic energy exergy analysis of combined cycle gas turbine power plant ccgt for improving its thermal performances. It is a public sector company fully owned by the govt of kerala. It further considers their role in minimizing andor eliminating environmental impacts and. The heat sources are available in high temperature ht and low temperature lt. Cement is mixed with water, sand, stones and gravel with the right proportions in order to produce concrete with the desired properties for a given application. In order to produce raw material preparation, clinker, preheater, rotary kiln and rotary cooler are widely used in cement plant. The exergy analysis and air pollutants emission estimation from the kiln system of a major cement manufacturing plant located in nigeria were conducted with a view to improve the level of performance of the production unit and minimize environmental effects. It is based upon the analysis of cumulative exergy consumption and of partial exergy losses appearing in all the links of the system. Feb 23, 2015 with the exergy analysis of power plants, we can detect causes to irreversibilities. It is found that the exergy efficiency for cement production units ranges from 18% to 49% as well as the exergy losses due to the irreversibility from kiln are higher than other units in cement production plant. Energy and exergy analysis of the kiln system in the cement plant 109 the fig. With the exergy analysis of power plants, we can detect causes to irreversibilities. The exergy method is a useful tool for furthering the goal of more efficient energyresource use, for it enables the locations, types, and magnitudes of wastes and losses to be identified and meaningful efficiencies to be determined.
Energy and exergy analyses for a cement ball mill of a new. The results obtained for the energy and exergy efficiency of the raw mill were 84. The major goal of the modern cement and concrete production industry is the minimisation. Click download or read online button to get the exergy method of thermal plant analysis book now. Energy and exergy analysis in an asphalt plants rotary dryer. An approach to analyse energy and exergy analysis of thermal. The production system consists of four main group operations. The cumulative consumption of nonrenewable natural exergy resources has. Pdf the exergy method of thermal plant analysis by t. Exergy analysis of energy systems pdf free download. Exergy analysis for greener gas turbine engine arrangements. The feed that enters the kiln inlet gradually travel towers the outlet end due to rotation and slope of kiln.
Pdf energy and exergy analyses of egyptian cement kiln. First, exergy and its use as a tool through exergy analysis are briefly described. Request pdf exergy analyses and parametric optimizations for different cogeneration power plants in cement industry the cement production is an energy intensive industry with energy typically. A p l i e d m e c h an e ournal of pplie j mechanical. Exergy and thermoeconomic analysis of cream pasteurisation plant. Traditionally exergy analysis has been applied mainly to single processes or applications. This research conducts exergy analysis in one unit of a coalfired power plant in central queensland, australia as a case study. The growing demand of the power has made the power plants of scientific interest, but most of the power plants are designed by the. This destruction of exergy in a process is proportional to the entropy generation in it, which accounts for the inefficiencies due to irreversibility. The results obtained show that the kalina cycle has a better performance in a cement plant 17. Tang established the exergy balance model of the system. Exergy analysis of operating lignite fired thermal power plant.
An overview cement production has been one of the most energy intensive industries in the world with energy typically accounting about 30. Besides, real figures of the cement factory have been used in this work. Abstract in the present work, exergy analysis of a coal. Request pdf an exergy analysis for cement industries. Such diversion is necessary to break the intense cycles of secondary constituents cl, alkalis and sulfur that may arise between precaciner preheater and kiln due to the high content of. They concluded the kalina cycle leads to the highest ef.
Exergy analyses and parametric optimizations for different. Energy and exergy analysis of a concretebased thermal. Thermal energy storage system became an answer to store the intermittent solar energy in the recent time. Pdf thermodynamic energyexergy analysis of combined. Efficiency in lng processing through exergy analysis myles hollingworth eric may. Exergy and carbon maps a mapping of humanmanaged exergy flow on a global scale was completed this year. Abstractin the last decades, heat recovery systems have received much attention due to the increase in fuel cost and the increase in environmental issues. Therefore, to say something about it, it must be known to which exergy level the calculation must be compared with. The objective of this study is to perform energy and exergy analysis of a raw mill rm and raw materials preparation unit in a cement plant in turkey using the actual operational data. In this study, regeneratortype sensible energy storage ses of 1 mj capacity is developed for its application in the lowtemperature region and hilly region like meghalaya. In this work, the energy and exergy analyses of a cement ball mill cbm were performed and some measurements were carried out in an existing cbm in a cement plant to improve the efficiency of the grinding process.
Definition of exergy exergy is the amount of work obtainable when some matter is brought to a state of thermodynamic equilibrium with the common components of the natural surroundings by means of reversible processes, involving interaction only with the above mentioned components of. The production process of a major wet process cement manufacturing plant in nigeria was studied and data collected for a five year period 2001 2005, from them enabled the estimation of the embodied energy intensity, exergy efficiency and the environmental impact of the raw material preparation process was assessed the cement plant accounts for over 40% of total local production of cement in. The problems of exergy analysis of thermal systems have been discussed. In the last decades, heat recovery systems have received much attention due to the increase in fuel cost and the increase in environmental issues. It is found that the exergy efficiency for cement production units ranges from 18 to 49 as well as the exergy losses due to the irreversibility from kiln are higher than other units in cement production plant. In this article, the role of exergy analysis in the assessment and improvement of energy systems is discussed. The results of the present work may be used for the optimal design and operation of cement kilns. Exergetic analysis and pollutants emission from a rotary. Energy and exergy assessment of a new heat recovery method in. The energy and exergy analysis has been studies for the different components of both power plants.
Efficiency in lng processing through exergy analysis. The paper analyses the information available in the open literature regarding energy and exergy analysis on high temperature power plant has been included. Pdf energy and exergy analysis of a vegetable oil refinery. The raw mill in a cement production plant has also been investigated in relation to exergy analysis.
This document is the 4th version of the introduction to exergy and energy. This work provides an in depth analysis of the material efficiency, main energy losses and the exergy destruction of the process. Read energy and exergy analysis of a rotary kiln used for plaster production, applied thermal engineering on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. For the analysis, mass, energy and exergy balances of the rotary kiln are constituted and using actual. In the cogeneration system for cement industry, the exergy input comes from the preheater exhaust and clinker cooler exhaust gases. The study proposed the use of insulating materials to reduce heat losses from the surface of the burner. Cement production is one of the most energy intensive industries all around the world. Three exergy efficiencies of a cement kiln plant are defined as follows. In this paper, a thermodynamic analysis of a coal based thermal power plant and gas based cogeneration power plant has been carried out. Introduction one of the most important problems for industries is the reduction of energy consumption.
In order to produce clinker, preheater, rotary kiln and rotary cooler are widely used in cement plant. The present article deals with evaluation of energy and exergy efficiences of an egyptian dry process cement kiln plant with precalciner characterized by that the whole kiln gas is diverted through by pass. The major heat loss sources have been determined as preheater and cooler. The exergy analysis of twoshaft gas turbine arrangements is presented and discussed in this paper. Tulay yesin may 2005, 120 pages in this thesis, several configurations of combined cycle cogeneration systems proposed by the author and an existing system, the bilkent combined cycle. Energy and exergy analysis of the raw mill in the cement plant 51 raw mill unit of the plant is conducted by using the actual plant operational data. Extended exergy accounting for energy consumption and co2. Kakaras national technical university of athens, laboratory of steam boilers and thermal plants, heroon polytechniou 9, 15780 zografou, athens, greece.
Energetic and exergetic analysis of waste heat recovery. Energy and exergy analysis of raw material preparation in. Energy and exergy analysis of a steam power plant in jordan, applied thermal engineering, vol. The exergy method of thermal plant analysis download. Recoverable loss which can be rectified by water washing or, more thoroughly, by mechanically cleaning the compressor blades and vanes after opening the unit. Their utilization in the current kiln reduces co2 emissions.
Nowadays, ball mills are used widely in cement plants to grind clinker and gypsum to produce cement. In this study, energy and exergy analyses of a raw mill rm and raw materials preparation unit in a cement plant in balikesir, turkey were performed for evaluating the performance of the plant using the actual plant operational data. In this study, thermodynamic assessment of the rotary kiln unit of a cement plant is carried. Exergy analysis of combined heat and power chp plants. In this study, different heat recovery systems for a cement plant are compared in terms of electricity generation and exergy analysis. In this paper exergy analysis, exergy balance and exergy efficiency birla cement plant. Exergy analysis and optimisation of waste heat recovery. The partly calcined material enters the kiln where temperature is maintained at 850c.