Optimization And Research On The Technology Of 24 Pairs Of Rods

Today's society,solar energy industry,whether in time or in space,the development is very rapid,polycrystalline silicon solar panels to become the main raw material,the quality and cost of polysilicon products in the entire photovoltaic industry chain,the largest share of the country The demand for polysilicon is growing rapidly,and the production technology of polysilicon is also developing rapidly,and the process equipment is also developing towards large-scale and energy-saving.Now the mainstream of polysilicon production technology is to improve the Siemens reduction furnace process,from 2003 to restore the furnace from 12 pairs of rods began to gradually increase to 24 pairs of rods,and then to the 48 pairs of rods,showing that the reduction process of polysilicon production process is a very Rapid technical process.The domestic mature techno logy is used widest in china.,the largest polysilicon production,the lowest energy consumption of polysilicon reduction furnace equipment for the 24 bar reduction furnace CVD reactor,due to the use of a wide range of technology is mature,for 24 pairs of rod reduction furnace operating parameters and process curves Manufacturers have different differences.There are still more potentials and research directions in the process of operation,such as inverted furnace,higher single power consumption,unsteady growth,black leather material,quality improvement and consumption reduction,etc.There are many research directions.In this paper,the polysilicon 24 on the Siemens method for the production of rod reduction furnace,combined with polysilicon che mical vapor deposition principle,the first simulation software to sim ulate the situation of polycrystalline silicon reduction furnace to det ermine the initial operation of the program and process ideas.In the process of production test and verify,adjust the regulation and control of the reduction furnace from the perspective of feeding proportion curve,current curve,reduction appliance,inlet nozzle and chassis structure,and solve the problems of 24 pairs of rod reduction furnace exist The quality of the appearance of the product is not controllable,the inherent quality fluctuations,large-scale production equipment cost advantage has not been played and other issues,and to continue to optimize the process parameters to provide direction.Through the trial and error of production,the operating scheme and the reference system of the pressure,temperature,proportion of feed and flow parameters of the reduction furnace system are universal.Can be compared on the basis of the same type reduction furnace,and in the feed,the current curve based on the idea of this article in accordance with the optimal adjustment to reduce the large reduction furnace test cycle,continue to tap to improve productivity and reduce costs.