Research on LCA Data and Environmental Impact of Industrial Silicon Smelting and High Purity Crystal Silicon Purification
Source abstract
Abstract
High purity polysilicon is the core raw material of solar cell, which is considered as environmental protection product. Due to the high energy consumption and environmental pollution in the course of its life cycle, the life cycle assessment (LCA) method is used to quantitatively calculate its environmental impact and summarize its emission reduction. Firstly, the LCA models of 1t industrial silicon and 1t high-purity polysilicon produced by modified Siemens process are established, and then the life cycle data of resource input, energy consumption, emission and comprehensive impact on the environment obtained from actual industrial production are analyzed. The main environmental impacts in its life cycle are divided into 1 ~ 10 impact categories to find the key factors that determine the environmental load. Results The LCA model was established and the environmental effects of the newly designed and modified Siemens process route on high purity polysilicon were compared. The environmental impacts of industrial silicon production and modified Siemens process for high-purity polysilicon production are 4.53 and 4.99, respectively. According to the quantitative results, the improvement focuses on reducing the power consumption of high-purity polysilicon in the production stage and optimizing the recycling of waste in the production process.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Photovoltaic Systems and Sustainability · Environmental Impact and Sustainability · Recycling and Waste Management Techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (43)
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