论文部分内容阅读
详述了高梯度磁选技术的最新进展和几种先进的物料提纯及分离磁选工艺 ,并介绍了它们在石油化工、除杂质、生物技术等方面的应用。重点阐述了高梯度磁选的理论基础及其在FCC废催化剂中的应用原理 ,并详尽介绍了其工艺流程。该磁分离方法主要是利用镍、铁等重金属元素在催化剂上沉积量的不同导致它们在磁场中所受的磁力大小不同 ,可从非磁性或弱磁性催化剂颗粒中选出吸附了较多金属的磁性催化剂颗粒。多余 50 % (质量比 )的高磁性催化剂被排弃掉 ,余下 30 % (质量比 )高活性的催化剂返回FCC装置中 ,该技术最终达到充分利用催化剂 ,提高汽、柴油产率 ,节省购买新鲜催化剂资金的目的。并且将为各炼油厂创造巨大的经济效益和社会效益。
The latest progress of high gradient magnetic separation technology and several advanced materials purification and separation magnetic separation processes are described in detail, and their application in petrochemical industry, impurity removal, biotechnology and so on are introduced. The theoretical basis of high gradient magnetic separation and its application principle in FCC spent catalyst are expounded emphatically, and the process flow is introduced in detail. The magnetic separation method is mainly the use of nickel, iron and other heavy metal elements deposited on the catalyst lead to their different magnetic fields in the magnetic force suffered by different sizes, from non-magnetic or weak magnetic catalyst particles selected more metal adsorption Magnetic catalyst particles. The excess 50% (mass ratio) of high magnetic catalyst is discarded, and the remaining 30% (mass ratio) high activity catalyst is returned to the FCC unit. The technology finally achieves full use of catalyst, improves gasoline and diesel yield, and saves fresh The purpose of catalyst funds. And for the refinery to create huge economic and social benefits.