Study On Establishment Of The Cleaner Production Index System And Evaluation Methods Of Iron And Steel Industry

Iron and steel industry is a pillar industry of national economy, but due to theproduction of steel involves a series of, a large number of resources and energysupplies of the high temperature treatment process, these substances, including coal,coke, limestone, ash, water, air, fuel, steel scrap, iron skin, as well as other recyclingmaterials. Production process such a large number of hightemperaturedust emissions,such emissions are allowed to be treated before discharge into the atmosphere. Ironand steel production are major sources of pollution sintering, coking, iron making,steelmaking and ancillary processes, including emissions of air pollutants in thepollution problems caused by particularly severe, and these dust emissions to theenvironment surrounding a major impact, but also makes iron and steel plants tocontrol air pollution is very difficult and costly. Therefore, the steel industry is anurgent need to fast and effective implementation of clean production, scientificmanagement, technological advancement as a means to achieve energy conservation,energy, the goal of reducing pollution emissions, to maintain human health andecological environment.Cleaner production, including a wide range of work procedures, including theestablishment of cleaner production methods and evaluation index system is theimplementation of cleaner production in management to quantify the most importantaspect for the benefit of cleaner production indicators of management, cleanerproduction assessment of the effects of the scale. In this paper, a structured,comprehensive, both scientific and simplicity of the design principles andsustainability, the combination of theoretical analysis, expert advice, the frequency ofpreliminary statistics and other methods to clean the iron and steel industry productionindex system. The indicator system, including two broad categories of quantitativeand qualitative .Quantitative indicators of energy indicators, resource indicators,utilization indicators, indicators of the characteristics of production technologies,pollution indicators in five areas, including the comparable energy consumption,energy consumption of EAF process, smelting electric power consumption, electricconsumption of the metal material, fireresistantsteel material consumption, fluoriteconsumption, steel consumption of the new water companies, waste heat utilization, corporateindustrial water reuse, recycling utilization of iron dust, smelting slagutilization than secondary refining,continuous casting ratio, steel (final products)integrated yield, quality and grade of steel product rate, the volume of drainage water,COD emissions, oil emissions, SO2 emissions, smoke (dust) emissions. Qualitativeindicators, including the establishment of environmental management systems andcleaner production audit, the implementation of environmental protection laws andregulations, the implementation of the state's key technology to encourage thedevelopment of three aspects of compliance, Including the establishment of specificenvironmental management system through certification, to carry out cleanerproduction audit, environmental protection projects "three at the same time" theimplementation of construction project environmental impact assessment system forthe implementation of the old pollution control deadline for completion of the project,the pollutant emission control, whether or not to optimize the use of electric powertechnology, is highly efficient continuous casting, continuous casting and hot chargingwhether or not to use hot delivery line, regenerative furnace type, whether there arehighstrengthsteel production capacity of machinery, whether or not to use variablefrequency AC motor speed control equipment, whether to adopt the whole of thesewage treatment plant (secondary), and reuse.Cleaner production as a result of the indicator value index system is aquantitative change to qualitative change from the continuous process of attribution ofgrades to describe indicators of the concept of value is ambiguous, not identified,more complex, clean production systems with multiattribute,and the multilevelnature of randomness and ambiguous characteristics,BP neural information capacityof largescaleparallel processing, and neural networks are implicit mathematicalapproach, without the establishment of mathematical models, and by the networktraining data profile from the knowledge, to multiple sets of weights and thresholds ofthe form were stored in the neurons, which constitute the knowledge network, andthen use the knowledge to evaluate or predict similar results, so as to solve the systemand evaluate the accuracy of the complexity of the conflict. BP neural networkalgorithm with a comprehensive and accurate evaluation of the impact of cleanerproduction in the quality of all the factors before and after assessment of cleanproduction enterprises in various sectors of the status quo, identify opportunities forcleaner production, to identify weaknesses, determine the level of cleaner production enterpriselevel.BP neural network algorithm for the evaluation of cleaner production, the keylies in establishing a network model of sample training study, the model will have asample that contains the expert knowledge, expert knowledge of the distribution andstorage of the weights in the network, and this training good BP network can be usedto treat the subject of the evaluation system to make a comprehensive evaluation ofthe evaluation representation of the experience and knowledge of experts.Finally, the use of Life Cycle Assessment LCA and BP neural network algorithmon clean production in the domestic advanced level in an enterprise of Jilin Provincefor example. By the terms of the enterprise in the domestic advanced level, the resultsreflected the actual data line, verify that the construction of this article and itsevaluation index system of the feasibility and effectiveness. In addition, for theevaluation of the results of analysis of cleaner production and corporate existence ofthe business reflects the drawbacks, this article from the strengthening of management,improve technology, improve energy efficiency resources to reduce pollutantemissions and so on to put forward a number of enterprises to improve the program.In summary, this paper established in the steel industry of cleaner productionmethods and evaluation index system, not only steelmakingindustry to determine thelevel of clean production, for comparison between companies to create a platform forthe eventual establishment of cleaner production magnesium industry evaluationcriteria taken an important step forward, but can also help enterprises more intuitiveunderstanding of their own production, in particular the shortage of places to practicein the production process of a targeted, selective allocation of resources, the allocationof resources to achieve the most optimization of enterprises to explore the potential ofcleaner production has played a very important role.