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Cleaner production is a new concept of environmental management, cleaner production audit is an important way for enterprises to achieve cleaner production. In recent years, statistical methods, material balance methods in cleaner production audits have been gradual application of clean production standard system are continuously improved, clean production audit has been gradually institutionalized management in iron and steel, chemical, mining, cement, etc. extensive industrial enterprises, as well as hotels and other service industries and agriculture industries. Life cycle assessment is the life cycle of a product system input, output and its potential environmental impacts of the compilation and evaluation of its focus on the quantitative analysis of the environmental impact, is an important tool for environmental management. Life cycle assessment is divided into the determination of the purpose and scope, inventory analysis, impact assessment and interpretation of the results of four steps. Their complexity, can be divided into the concept of type, life cycle assessment of the type of quick and detailed three types, concepts and quick-clean production audit tool suitable for use as a single enterprise. Carbon industry as one of the heavy polluting industries, the production process generates a lot of dust, the bitumen fume characterized pollutants phenylpropanoid [α] pyrene is a carcinogenic substance. Use of life cycle assessment of the environmental impact of a carbon production process analysis to define, based on cleaner production audits and take the initiative to control the generation of pollutants, reduce the burden on the end of the treatment, in order to achieve energy energy, pollution reduction, and efficiency of the overall goal. The main results of the study are as follows: (1) A Carbon Works carbon anode production process is divided into calcined, molding, the three roasting process, the main raw material is petroleum coke, asphalt, the main source of energy is electricity and natural gas. Calcining stage conversion rate of 75.22%, roasting the conversion rate of 87.7%, general domestic level. The main waste dust, waste water and solid waste. (2) A the Carbon Factory product life cycle environmental impact quantified in ten categories of environmental impact, the carbon anode production process is the most significant environmental impact is the impact of global warming potential, followed by chronic occupational health effects. In the three step the greatest impact to the environment of the roasting stage, calcining, followed by molding step with minimal environmental impact. (3) According to the results of the evaluation of the life cycle, to determine the roasting plant for the audit focused workshop. Roasting plant production sewage analysis, combined with actual production, 11 cleaner production program, arrangements for the implementation of the economic conditions. (4) after the implementation of cleaner production program, the environmental load than the carbon production process prior to the implementation of the different degrees of reduction. Chronic occupational health effects, the effects of global warming, the impact of aerosols, ozone depletion effects were reduced by 8.9%, 10%, 13.1% and 9%, respectively. At the same time, after the implementation of the program, the enterprise has also made considerable economic benefits, accumulated 211 million return. The employees operating environment have been greatly improved and enhanced. (5) The focus of the life cycle assessment method to quantify the environmental impact of the production process more in line with the concept of cleaner production, convenient Accelerated Life cycle assessment is a good tool for enterprises to develop clean production audit.
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