首页>
外国专利>
Systems and methods to treat flue gas desulfurization waste to produce ammonium sulfate and calcium carbonate products
Systems and methods to treat flue gas desulfurization waste to produce ammonium sulfate and calcium carbonate products
展开▼
机译:治疗烟道气脱硫废料的系统和方法,生产硫酸铵和碳酸钙产物
展开▼
页面导航
摘要
著录项
相似文献
摘要
Disclosed herein are system and methods for producing a high purity ammonium sulfate product as well as either a lower or a high purity calcium carbonate product by reacting flue gas desulfurization (FGD) gypsum feedstock in batch or continuous mode using synthesized ammonium carbonate from ammonia and carbon dioxide gases. The high purity calcium carbonate is obtained by using a precipitation catalyst, filtering out the impurities, then precipitating a high purity calcium carbonate. Alternatively, the lower purity calcium carbonate may be dissolved in acid, impurities filtered out, then a high purity calcium carbonate is precipitated out using a soluble carbonate salt.
展开▼