新型鑄錠爐制造技術研究
[Abstract]:Polycrystalline silicon ingot is the basic process in the whole photovoltaic industry chain, and the ingot furnace is the equipment used in the silicon ingot casting, and it is also a very important equipment in the production of solar cells. The manufacture of polysilicon is to use casting or directionally solidified casting technology to obtain molten silicon liquid, through the adjustment of a specific process, the impurities are separated out, and the oxygen and carbon content required for solar power generation is reached. The melt is finally solidified into a silicon ingot. In this way, it can be sliced for use by solar cells. In this paper, according to the advanced ingot technology and market demand, a G6 type polysilicon ingot furnace with international advanced loading capacity of 800Kg-1000Kg has been developed. At the same time, it can produce common polysilicon ingot, high efficiency polysilicon ingot and quasicrystalline silicon ingot. Master the key technology of equipment and ingot technology, and realize the industrialization of equipment. In the development of ingot furnace, the mechanical part, electrical control part, graphite thermal field part and process part of ingot furnace are analyzed and designed to meet the preset target. The manufacture of the new ingot furnace is referred to the GT furnace mold. The mechanical part, electrical control part, graphite thermal field part and ingot process of the ingot furnace are studied and improved, and a new type of G6 ingot furnace is manufactured. In the aspect of thermal field design, the thermal field of graphite is designed by using thermal field simulation software. Through the installation and commissioning of the equipment and process, constantly adjust the process to meet the technical requirements. Through research and design, achieve the target of setting. The polycrystalline silicon ingot furnace with international advanced level has been successfully manufactured, which can produce 800Kg-900Kg silicon ingot, and the ingot furnace has the upgrade space and the output can reach 1000Kg-1200Kg. For the polycrystalline silicon ingot furnace, the production rate is 1.0-1.2 cm / h, the unit energy consumption is less than 7 degrees / Kg, ingot yield is more than 70 and the conversion efficiency is more than 17.2%. The successful development of the device reduces the purchase price of the equipment and reduces the cost of the equipment purchase for the expansion project of each base of the company.
【學位授予單位】:華北電力大學
【學位級別】:碩士
【學位授予年份】:2015
【分類號】:TN304.12
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