Abstract
Environmental protection pressures and green energy strategies have created major challenges for a cleaner production of China’s coal-fired power generation. Although China’s electric power dispatching department has tried to prioritize clean energy, the current dispatching models lack environmental indicators related to coal-fired power generation. The main purpose of this paper is to provide a comprehensive environmental indicator for the cleanliness evaluation of coal-fired power plants. In this paper, the (Emergy-based Life Cycle Assessment) Em-LCA method is used to measure and analyze environmental related resource consumption, socio-economic investment, and emissions in the whole life cycle of coal-fired power plants. At the same time, based on the above three environmental impacts in the whole life cycle, this paper constructs the (Em-LCA based Cleaner Production Comprehensive Evaluation) ECPCE index to guide a green dispatching plan. By comparing the calculation results of the index, this paper finds that there are differences in the environmental advantages of different generating units in green dispatching, which are closely related to the process management of coal-fired power plants in production and the environment.
Highlights
China has always been an active participant in the global response to green development and cleaner production
The main purpose of this study is to provide a process-based environmental decision-making reference for clean power dispatching by enabling a cleaner production evaluation of coal-fired power generation
The main contributions of this paper are as follows: (i) This paper extends the life cycle boundary of coal-fired power generation
Summary
China has always been an active participant in the global response to green development and cleaner production. Coal-fired power generation is the single largest emitter, accounting for 30% of all energy-related carbon dioxide emissions. India and the United States accounted for 85% of the net increase in emissions. Sulfur dioxide, nitrogen oxides, and soot produced by coal-fired power generation are the main sources of atmospheric pollutants. We selected the Cangdong Power Plant as a research target, located in Hebei Province, China. The Cangdong Power Plant is a coal-fired combined heat and power (CHP) power plant, mainly supplying electricity for heating in North China and Southern Hebei. The Cangdong power plant has two 600 MW subcritical units and two 660 MW supercritical units. The power plant uses Shenfu low-sulfur coal and has a high-efficiency electrostatic precipitator, and synchronously uses a flue gas desulfurization device to reduce its impacts on the environment.
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