Jet pulverization process and explosion prevention Taicang Jinxi

气流粉碎 艺及爆炸防护 Jet pulverization process and explosion prevention 太仓金溪粉碎设备有限公司 Taicang Jinxi Pulverization Equipment Co, Ltd. 吴琴秀 Wu Qinxiu Tel: 139 0622 8290 http: //www. tcjinxi. com/ 昆山花桥 业爆炸防护论坛 2016年 9月7日 Kunshan Huaqiao Industrial Explosion Prevention Forum, Sept. 7, 2016

内容 Agenda v 1 气流粉碎及其优势 Jet pulverization and its advantages v 2 开路气流粉碎 艺 Open circuit jet pulverization process v 3 惰性气体保护闭路防爆气流粉碎 艺 Inert gas protected closed-loop explosion proof jet pulverization process v 4 气流粉碎 艺粉尘防爆 Explosion prevention of jet pulverization processes 国家精品课程网上资源的可用性研究/***

1、气流粉碎及其优势 Jet pulverization and its advantages v 1. 1 气流粉碎机发展简史 The brief history of jet mill v 1. 2 气流粉碎原理 The principle of jet pulverization v 1. 3 流化床气流粉碎机 Fluid bed jet mill v 1. 4 气流粉碎的优势 The advantages of jet pulverization process 国家精品课程网上资源的可用性研究/***

1. 1气流粉碎机发展简史 The brief history of jet mill v 1882年，美国戈斯林首次提出利用气流动能进行粉碎的专利。 Gosling (US) first proposed the patent to use kinetic energy of air flow for pulverization. v 在 1917年和1927年，威洛比提出了对喷式气流粉碎机专利。 In 1917 and 1927, Willoughby presented opposite jet mill patent. v 在 1936年，依据安德鲁的专利，第一台扁平式气流粉碎机在美国被造出。 In 1936, according to Andrew's patent, the first flat jet mill was made in the US. v 在 20世纪 40年代出现了循环管式气流粉碎机。In the 1940 s, circulating tube jet mills were developed. v 在 20世纪 70年代，德国Alpine（阿尔派因）公司开发了流化床式气流粉 碎机。 In the 1970 s, the German Alpine (Alpine) developed the first fluidized bed jet mill 国家精品课程网上资源的可用性研究/***

1. 2 气流粉碎原理 The principle of jet pulverization 圆盘式气流粉碎 Disk jet pulverization 流化床式气流粉碎 Fluid bed jet pulverization 气流粉碎的基本原理是颗粒在高速气流的作用下，互相碰撞而自破碎。 The principle of jet pulverization is that the particles are coground by collision with each other. 国家精品课程网上资源的可用性研究/***

1. 2 气流粉碎原理 The principle of jet pulverization 圆盘式气流粉碎机原理 Schematic of disk jet mill 国家精品课程网上资源的可用性研究/***

1. 3 流化床气流粉碎机 Fluid bed jet mill v 流化床气流粉碎机由粉碎腔体、粉碎喷嘴、分级叶轮、进料装置等组成。 The fluid bed jet mill consists of pulverization chamber, jet nozzles, classification wheel (blades), and feeding device. v 物料通过进料装置进入粉碎室，由压缩空气通过粉碎喷嘴向粉碎室高速喷射， 物料在超音速喷射气流中加速，并在喷射气流交会处反复冲击、碰撞而粉碎。 The raw material enters the mill by a feeding device, and the particles are to be accelerated by supersonic flow of air. In the intersection, the particles are impacted and collide with each other, and are pulverized. v 粉碎室的上部为可控制转速的分级叶轮，粉碎后的产品达到细度的通过分级叶 轮进行收集，没达到的细度，沿着腔体回到粉碎室再次粉碎，如此反复。There is a classification wheel (blades) at the top of the pulverization chamber, whose rotary speed can be controlled. The fine particles that meet the size requirement pass the blades and to be collected, while the coarse particles return to the pulverization zone along the chamber wall. 国家精品课程网上资源的可用性研究/***

1. 4 气流粉碎的优势 The advantages of jet pulverization v (1) 可实现超微粉碎，细至 0. 5μm Superfine pulverization (as fine as 0. 5μm) can be achieved. v (2) 产品粒度均匀（粒度分布窄） The particle size is uniform (particle size distribution is narrow). v (3) 因为喷嘴内气流压力降低产生膨胀冷却效应，粉碎过程物料无温升 There is no temperature rise during pulverization， because of the cooling effect of the jet expansion. v (4) 产品无介质污染 There is no pollution in the product from pulverization media. v (5) 粉碎不依赖运动部件，内部不易产生点火源 The likelihood of ignition sources occurrence is low. 国家精品课程网上资源的可用性研究/***

1. 4 气流粉碎的优势 The advantages of jet pulverization v (6) 结构简单，易于拆装清洗，特别适合要求GMP标准的医药行业。 Simple structure, easy to be disassembled and assembled, especially suitable to pharmaceutical industry which need GMP standard. v (7) 易于密封，环境友好，适用于农药行业 Easy to be sealed, environmental friendly, and suitable to pesticide industry. v (8) 更换粉碎介质为惰性气体，易于实现防爆 If the jet media is changed to inert gas, the jet mill is easy to be explosion proof. 国家精品课程网上资源的可用性研究/***

2 开路气流粉碎 艺 Open circuit jet pulverization process v (1) 智能环保连续生产垂直布局 艺流程 Intelligent green continuous vertical process v (2) 智能环保连续生产水平布局 艺流程 Intelligent green continuous horizontal process v (3) 智能环保间歇性 艺流程 Intelligent green batch process v (3) 智能环保混合、粉碎、造粒、干燥组合 艺流程 Intelligent green combined process with mixing, pulverization, granulation and drying. 国家精品课程网上资源的可用性研究/***

2 开路气流粉碎 艺 Open circuit jet pulverization process (1) 智能环保连续生产垂直布局 艺流程 Intelligent green continuous vertical process 国家精品课程网上资源的可用性研究/***

2 开路气流粉碎 艺 Open circuit jet pulverization process (2) 智能环保连续生产水平布局 艺流程 Intelligent green continuous horizontal process 国家精品课程网上资源的可用性研究/***

2 开路气流粉碎 艺 Open circuit jet pulverization process (3) 智能环保间隙性 艺流程 Intelligent green batch process 国家精品课程网上资源的可用性研究/***

2 开路气流粉碎 艺 Open circuit jet pulverization process (4)智能环保混合、粉碎、造粒、干燥组合 艺流程 Intelligent green combined process with mixing, pulverization, granulation and drying 国家精品课程网上资源的可用性研究/***

3 惰性气体保护闭路防爆气流粉碎 艺 Inert gas protected closed-loop explosion proof jet pulverization process 国家精品课程网上资源的可用性研究/***

4 气流粉碎 艺粉尘防爆 Dust explosion prevention of jet pulverization process v (1) 气流粉碎 艺在爆炸防护上的优势 The advantages of the jet pulverization in the aspect of explosion prevention v (2) 气流粉碎 艺粉尘爆炸及其原因 Dust explosion of the jet pulverization processes and the reasons v (3) 气流粉碎防爆关键技术 The key technologies of explosion prevention of the jet pulverization processes 国家精品课程网上资源的可用性研究/***

4 气流粉碎 艺粉尘防爆 Dust explosion prevention of jet pulverization process (1) 气流粉碎 艺在爆炸防护上的优势 The advantages of the jet pulverization in the aspect of explosion prevention v 传统的机械粉碎设备内部有运动部件，依靠运动部件的挤压和冲击实现粉碎。 运动的粉碎部件易于产生摩擦热表面和撞击火花。 There are moving parts in the traditional mechanical pulverization equipment, and pulverization is achieved by movement of the parts. The movement of parts may create friction surface and impact sparks. 对辊粉碎 Roller mill 锤式粉碎 Hammer mill 盘式磨 立式转动磨 Disk mill Vertical rotary 国家精品课程网上资源的可用性研究/*** mill

4 气流粉碎 艺粉尘防爆 Dust explosion prevention of jet pulverization process (1) 气流粉碎 艺在爆炸防护上的优势 The advantages of the jet pulverization in the aspect of explosion prevention 2016年安阳“ 5. 31”安阳雷蒙磨粉碎 艺硅粉爆炸事故，4死 3伤 2016 “ 5. 31”dust explosion in a Raymond mill process, Anyang, Henan 国家精品课程网上资源的可用性研究/***

4 气流粉碎 艺粉尘防爆 Dust explosion prevention of jet pulverization process (1) 气流粉碎 艺在爆炸防护上的优势 The advantages of the jet pulverization in the aspect of explosion prevention 2016年安阳“ 5. 31”安阳雷蒙磨粉碎 艺硅粉爆炸事故，4死 3伤 2016 “ 5. 31”dust explosion in a Raymond mill process, Anyang, Henan 国家精品课程网上资源的可用性研究/***

4 气流粉碎 艺粉尘防爆 Dust explosion prevention of jet pulverization process (1) 气流粉碎 艺在爆炸防护上的优势 The advantages of the jet pulverization in the aspect of explosion prevention v 气流粉碎机不依赖运动部件粉碎，因此一般不会出现机械火 花。如有异物进入也不会因此而产生热表面或火花。 Pulverization doesn’t depend on movement of part for jet mills. If there is ingress of foreign objects, neither heat surfaces nor sparks will be generated. v 气流粉碎系统易于密封，易于进行惰性气体保护 The jet pulverization system is easy to be sealed airtight, and easy to be protected by inter gases. 国家精品课程网上资源的可用性研究/***

4 气流粉碎 艺粉尘防爆 Dust explosion prevention of jet pulverization process (2) 气流粉碎 艺粉尘爆炸的原因 The reason of dust explosion in jet mills v 2015年 7月16日，昆山巴城镇石牌明璞粉碎设备公司粉碎发泡剂（偶氮 二异丁腈）发生爆炸 A jet mill explosion because of electrostatic discharge v 使用带环绕钢丝的塑料软管输送粉尘，设备未进行等电位连接与接地。 Plastic hose with spiral steel wire was used to transfer dust. The equipment was not bonded and grounded. 国家精品课程网上资源的可用性研究/***

太仓金溪粉碎设备欢迎各位专家莅临指导 ！ Welcome to Taicang Jinxi Pulverization Equipment Co. , Ltd. to give your expert advice! 国家精品课程网上资源的可用性研究/***

谢谢大家！ Thanks! Tel: 139 0622 8290 http: //www. tcjinxi. com/