Fluorinated back into the crux of photovoltaic products must confront pollution risks

Recently, the National Energy Board website announced the "National Energy Board on further strengthening the PV power plant construction and operation management notice" (hereinafter referred to as the "Notice"). In strengthening the construction quality management, "notice" standard for the delivery of PV modules made strict demands, involving cells, Silver, packaging materials, glass, backplane, junction boxes, connectors and other key components and raw materials origin, specifications and grades. Insiders pointed out that, due to China in the manufacture of photovoltaic modules more use of fluoropolymers back, has resulted in a threat to the environment, business updates, research and development of new environmentally friendly components without delay.

The crux: fluorinated Backplane

Test data from the national environmental protection department show that the distribution of endemic fluorosis in our country is very wide, Yunnan, Hubei, Inner Mongolia, Gansu, Jilin and other places existing disease counties 1296, accounting for 46.8% of the total number of counties. According to the general manager of Shanghai Giant Electronics Technology Company Luo Zigui, at present our country in the manufacture of photovoltaic modules more use of fluoropolymers backplane, since the polymer containing halogen element, after the assembly scrap, recycling may fluoropolymer will face some difficulties, and the resulting environmental pollution problems in the future will be highlighted. Given the industry is currently no effective recycling programs and technologies, combined with a solid fluorocarbon abnormal chemical structure, usually buried processing method in the year 1000 can not degrade the ingredients. Also, because the fluoride in the combustion will release toxic and harmful gases, so it can not be treated with incineration methods. In accordance with this situation continues, the PV modules caused by environmental pollution problems in the near future will become increasingly severe.

Industry data show that the total installed capacity of fluorinated back on the domestic market has exceeded 10GW, terms of the amount of 1MW installed backplane 7200 sq m, the country has used fluorinated backplane with a capacity of 72 million square meters. Such a large number of backplane security deal scrapped after urgent need of attention. In this regard, the backplane manufacturers Coveme responsible person, the whole PET film backplane or solve the above problems present rise, to maintain stable performance for a long time, do not require special handling when recycled.

The whole industry chain of environmental protection

For the security issues of PV modules in the industry as well as the national level have attracted attention. National Energy Board in the above-mentioned "notice" that the photovoltaic power plant project and network operation shall be adopted by the state commission approved certification body accredited photovoltaic modules, inverters and other key equipment. Units when the project equipment procurement tender, should clearly require the use of certified and meet the national targets of products. Key components of photovoltaic modules suppliers shall provide testing and certification consistent with cells, Silver, packaging materials, glass, backplane, junction boxes, connectors and other sources and raw and auxiliary materials, specifications and rating information.

Anticipating fluoropolymer film will cause environmental pollution, so open up the non-fluorinated backplane production, these backplanes will also be sold in China and other markets. The person in charge said, all products and production waste generated in the process are recyclable. Backplane production waste polyethylene terephthalate (PET) will be recovered by a professional company, specialized companies share these materials other supplies, such as textile fibers and nonwovens. Byproduct of the production process, such as volatile organic compounds will adhesive Coveme Zhangjiagang as fuel to provide heat to other devices. For the recovery of the backplane, the use of renewable thermal combustion, does not substantially cause pollution.