Alta pressione chimica reattore per granulare policristallino silicio

Shaanxi Nonferrous Tianhong Ruike Silicon Materials Co., Ltd. (hereinafter referred to as "Tianrui Silicon Materials") is a Sino foreign joint venture high-tech enterprise that integrates the manufacturing, sales, service, and research and development of ultra-pure silicon materials. It has the world's leading production technology for electronic grade silane gas, granular polysilicon, and ultra-pure polysilicon. The first phase has completed an annual production of 18000 tons of granular polysilicon, 300 tons of ultra-pure polysilicon The industrialization project of electronic and photovoltaic new materials with a loading capacity of 2000 tons of high-purity silane gas, which produces ultra-pure polycrystalline silicon and high-purity silane gas, fills the domestic gap and significantly improves the supporting level of upstream and downstream industries in Shaanxi Province.

The Tianrui Silicon Materials Phase I project has significant features such as continuous production, closed circuit circulation, clean production, energy conservation and consumption reduction. Since the construction of the project, Tianrui Silicon Materials has always made technology implementation, absorption, and independent research and development a top priority for the company. In August 2020, a number of technicians were organized to go to the United States for process operation training, and the exploration and research and development of new processes and technologies were continuously deepened. On the basis of the first generation silane fluidized bed technology of REC silicon materials, a development model combining imported technology and independent research and development has been adopted to successfully achieve the first comprehensive iteration and upgrading of silane fluidized bed process technology. The FBR-B (second generation silane fluidized bed process) production process technology, which has been developed and put into operation, has a longer actual operating time, higher product quality, and faster purification rate compared to the design value, Its core advantages include reducing the reduction power consumption to 1/10 of the Siemens method, reducing the comprehensive power consumption to 1/3, shortening the purification time of the fluidized bed reactor unit to about 7 days, breaking through the continuous operation time of a single chemical reactor equipment by 800 days, reaching 4 times the design time, and having a single production line feed rate exceeding the design value by 30 percent . At the same time, it has achieved a 60 percent equipment localization rate, improving the level of independent and controllable industry. At the same time, Tianrui Silicon Materials is also strengthening independent research and development on core equipment and key spare parts, overcoming the "bottleneck" issues such as domestic ceramic lining, filling the domestic gap, and reducing production and operation costs.

Il iterativo aggiornamento di tecnologia ha guidato a significativo salto in il produzione e qualità di granulare policristallino silicio prodotti. il produzione capacità è stato aumentato da 10000 tonnellate/anno in il prima generazione tecnologia a 20000 tonnellate/year in il seconda generazione tecnologia, con il qualità raggiungere il fotovoltaico speciale livello. Tra loro, più di 30 percento di il prodotti hanno raggiunto il elettronico livello, e it è il primo in il industria a raggiungere efficiente singolo cristallo diretto massa applicazione con a prodotto proporzione di su a 95 percento , Stabilire a notevole industria strategica posizione e mercato influenza di Tianhong Ruike brand for granulare polisilicio prodotti.

Entering the "14th Five Year Plan" period, Tianrui Silicon Materials closely follows the "dual carbon" goal, seizes development strategic opportunities, and timely plans and organizes the implementation of an 80000 ton electronic grade granular polycrystalline silicon industry upgrade project. It is reported that the project has achieved a comprehensive iterative upgrade of the overall operating system through the second iteration of process technology, forming a 100000 ton production and operation system. The equipment localization rate has reached 80 percent , the reactor purification time has solidified to less than 7 days, and the product quality has all reached electronic level, with some reaching electronic level 2 to 1. After the new project is put into operation, the reduction in unit consumption and the effect of scale efficiency are evident. Under the condition of a production capacity of 100000 tons, the manufacturing cost has significantly decreased by 33 percent compared to the current production capacity of 18000 tons/year, reaching a global leading level.

As one of the main products of Tianrui silicon materials, granular polysilicon products have application advantages such as low Carbon footprint, no need of crushing, good fluidity, and strong filling ability, and are ideal for downstream RCZ (Recharged Czochralski multi loading and crystal pulling technology) and CCZ (Continuous Czochalski continuous direct drawing technology) re feeding. With the continuous improvement of the quality and stability of the company's products, the proportion of high-quality plasmid like polycrystalline silicon used in the single crystal field by Tianrui Silicon Materials has increased from 5 percent in initial testing to 20 percent in current batch applications, and has passed 30 percent of the crystal pulling test. With the increase in production and supply, it will bring higher gains to the industrial chain in the future. At the same time, Tianrui Silicon actively expanded the application field of granular polysilicon, reached a cooperative relationship with ACHIEVE CHEM, and took the lead in realizing the diversified application of a full range of granular polysilicon products by silane fluidized bed method.

Il preparazione di granulare polisilicio prodotti solitamente coinvolge il seguente chimico macchinari attrezzature:

Reattore: A contenitore usato per chimica reazione, quale può essere a alta pressione inossidabile acciaio reattore contenitore oppure a incamiciato vetro reattore.

Riscaldamento apparecchiature: Such as elettrico forno, riscaldamento piastra, riscaldamento mantello, riscaldamento circolatore, etc., used to provide the temperature required for the reaction.

digitale elettrico agitatore oppure magnetico agitazione, usato a mix and stir reagenti.

Filtrazione apparecchiatura: Usato a separato solido e liquido fasi, tale come vuoto filtro imbuto, filtro carta, filtro membrana, ecc.

Essiccazione attrezzature: Such as sottovuoto asciugatura forno, or granigliatura asciugatura forno, etc., usato a rimuovere solvente o umidità.

Centrifuga: Usato a separare solido da liquido e raccogliere solido prodotti.

La purezza di Tianrui silicio materiale alta purezza silano gas prodotti è 99,9999 percentuale , e la qualità ha raggiunto il internazionale avanzato livello. In aggiunta a essere ampiamente riconosciuto in i campi di fotovoltaico celle , piatto pannello display, e semiconduttore produzione% 2c scoperte sono stati fatti in l'applicazione di nuovo energia batteria materiali. il purezza di ultra puro zona fusione policristallino silicio raggiunge 13N, e il impurità contenuto è as basso as ppt (ppt parte per trilione) livello. It è ampiamente usato in nuovo energia veicoli, nuovo energia energia generazione, industriale automazione, ferrovia transito, 5G e altro campi.

In recent years, Tianrui Silicon Materials has fully implemented the new development concept, promoted the deep integration of industry chain, talent chain, and innovation chain, fully utilized Qinchuang's original new driving platform, combined with the company's own talent advantages, and collaborated with domestic and foreign research institutes to target cutting-edge fields and forward-looking technologies in the industry. Through technological innovation, Tianrui Silicon Materials has empowered the company to develop high-quality, and has won 5 scientific and technological awards, There are 4 awards for the "Three New and Three Small" (new technology, new process, new materials and small inventions, small creations, and small transformations) innovation competition, 10 technology patents have been applied for, 7 science and technology projects have been successfully applied for, and 5 standards have been included in the national industry standard plan for 2022. Currently, there are 72 technology patents. It has been successively awarded the titles of "National High tech Enterprise", "National Intellectual Property Enterprise", "Shaanxi Province Intellectual Property Advantage Enterprise", "Shaanxi Province Gazelle Enterprise", "Shaanxi Province 2021 Famous Brand Enterprise", and "Third Batch of Intelligent Photovoltaic Pilot Demonstration Enterprises". The produced granular polysilicon, ultra-pure electronic grade silane gas, and electronic grade polysilicon products have been recognized as key new products in Shaanxi Province.