In December 21st, "China Science News" reports, pilot production project of Shanghai Jiao Tong University professor Xiao Wende led research and development with independent intellectual property rights of silane mass production 600 tons / year of new technology, successfully in Henan coal leveling what group test, and has a continuous and stable production of high quality products and more than 99.9999% purity of silane. The success of the project marks the high purity silane mass production technology breakthrough.
It is understood, the total amount of China's import of electronic chips and large scale integrated circuit industry $230000000000 last year. Among them, an important reason is the lack of high purity crystalline silicon materials, and production of high purity crystalline silicon must be of high purity silane based. China's electronic industry for decades has been looking for a method of high purity silane mass production, hope clear obstacles to the development of information industry China. But the production of high purity crystalline silicon material is must be of high purity silane based.
A very long time in the past, the domestic enterprise mainly adopts magnesium silicide as raw materials, small size, high cost, low product purity; there are two large state-owned enterprises to spend heavily in the introduction of the Usa Inc's technology. With fluosilicic acid as raw material, large investment, high cost, the purity is not high, the survival difficult position.
Professor Xiao Wende with his long-term solid chemical foundation of theory and practice, skilled use of a hot and frontier technology of chemical reaction engineering, with multifunctional reactor as the foundation, putting forward a silane based on production technology of trichlorosilane. The unlikely reaction (conversion rate 0.1%) can achieve close to 100% conversion.
In 2010 December, what Chinese Pingmei Group and the Shanghai Jiao Tong University signed a strategic cooperation agreement, the joint development of silane method polysilicon technology. According to the agreement, what Ping Coal Group has invested 200000000 yuan, through the joint development and construction of three and a half years time, the smooth progress of the project. The pilot plant was established in September this year in the one-off test successful.
Professor Xiao Wende said, the project put into operation, marking the industrialized production technology has complete sets of silane completely independent intellectual property rights of the first in China to make a breakthrough, ending the monopoly of foreign technology and domestic products all rely on imports of history.
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Shanghai Jiao Tong University Professor, "Yangtze River scholars", Dr. Xiao Wende
In the newly completed Shoushan coking company an annual output of 600 tons of silane project filling workshop, many customers come to order products. Silane is an important material in the process of manufacturing solar cells, is widely used in flat panel display, semiconductor, coating glass manufacturing enterprises. In recent years, the domestic market demand of silane years growth rate reached 15% to 20%.
The main raw materials for the production of silica silane and hydrogen. Shoushan coking company of Pingdingshan Coal Group is what the largest coking coal production enterprises. The company adhere to the road of the development of coking simultaneously, in addition to the production of high quality coke by-product, also extended the industrial chain, refine hydrogen from coke oven gas, hydrogen yield up to 30000 cubic meters per hour.
In 2013 April, Shoushan coking company in cooperation with Shanghai Jiao Tong University research and development, production of silane. After the technical innovation, more than a year of October 26th this year, the project put into operation the silane Shoushan coking company, the purity of the product can reach 99.99999%. It is reported, at present the import of foreign products with high purity silane is 99.9999%, the national standard is 99.9999%.
Preparation device
The project of silane device manager Li Hongbin said, the project adopts silane method realization of industrialized production of silane in the production process, raw materials can be converted, no waste emissions, broke the Japanese magnesium silicon method, USA silicon chloride method and other traditional silane technology is difficult to mass production and high cost, waste discharge multi bottleneck.
