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我国“全封闭移动式碳化硅冶炼炉窑技术”达领先水平

2017-09-15 17:46:42   央广网

央广网北京9月15日消息(记者刘天思)9月14日,由中国高科技产业化研究会科技成果转化协作工作委员会董永生主任和中国机械工业联合会马敬坤处长主持的鸡东宝鑫碳化硅有限公司自主研发的“全封闭移动式碳化硅冶炼炉窑技术”通过了中国机械工业联合会的科技成果鉴定,技术水平达到国际领先。

该项目是国内首个实现碳化硅封闭冶炼解决了碳化硅在冶炼过程中炉气不能回收的难题,通过回收炉气送至电站做功发电降低碳化硅生产成本。解决了原始冶炼过程中炉气点燃外排不环保、不节能、对从业人员危害大等难题。该技术中,利用氮气置换封闭空间内的氧气,通过各种仪表随时监测炉气从产生、输送、燃烧全过程,确保各环节的安全性,形成了独特的技术体系,适合工业化连续生产。

在国内首次将碳化硅冶炼炉密闭在封闭的窑体内,利用氮气首先排除窑体内的氧气,通电后产生的炉气经过洗涤塔洗涤净化,利用罗茨风机正压输送到自备电站做功发电。供电铝排设置在地下通廊内,避免高空管线维护困难,影响行车运行。该项技术简单易行,特别是冬季时,原始裸烧工艺受室外气温影响,保温效果差,炉产相对降低,在使用了全封闭移动式碳化硅冶炼炉窑后可减少热损失,产量相对提高。通过反复实践,生产出的绿碳化硅纯度达到98.5%以上,黑碳化硅一级品达到97.5%以上,符合国家相关标准,技术先进,工艺合理。

目前人工冶炼碳化硅已有100余年历史,长期以来,炉气回收问题一直是困扰众多学者和生产厂家的难题部分学者只是在实验室取得了相关数据,距离工业化生产还有一段距离。随着国家在环保方面的法制强化和人们对环保认知的增强,原始的冶炼方法已经不能适应当前市场的发展要求,碳化硅行业如果不进行产业升级,必将会退出历史的舞台。本公司突破了炉气回收的壁垒,开发出高稳定性的全封闭移动式碳化硅冶炼炉窑该项技术在总结前人的基础上,对碳化硅冶炼炉气回收做出了革命性的创造和发明,不仅可以冶炼绿碳化硅、黑碳化硅,还可以进行石墨化石油焦的冶炼。

本项目技术成果预期产业规模将达到数十亿元人民币,能够带动如碳化硅、石墨化石油焦等相关高耗能、高污染行业健康发展。通过其原创性技术研发将扩大产品的应用范围,降低产品生产成本,具有极大的社会效益和经济效益。

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