Electrification and Elimination of Sprayed Diesel Passing Through a Metal Grid

• Main Authors: Huo-Jui Tsai, 蔡和叡
• Other Authors: None
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/76075346634345155455

碩士 === 國立高雄第一科技大學 === 環境與安全衛生工程研究所 === 102 === In recent years, granular materials as raw materials for the industrial manufacturing process operations is increasing. In the material transports process, materials and piping friction will produce charged situationto form a potential hazard source. Minor and the harm caused by static electricity generated shock personnel, product defective, production bottlenecks. In severe cases, will ignite inflammable vapors, gas, liquid or dust and other substances in the environment, causing fire and explosion accidents. Corona discharge presence of the tip and the charged surface of the discharge phenomenon. A corona discharge is an electrical discharge that occurs when the fluid around a conductor ionizes. The strength of the electrical field must be great enough to cause the ionization. Free of the ions through the air, into the opposite electrical granules and neutralize the charged granules, it is possible to remove granules with a corona discharge of static electricity. In this study, an experimental device to simulate granules transport operations, experiment with different velocity, humidity, granules and transport piping on the impact of charged granules. There are four measuring points in the transmission path, namely: venturi exit (straight pipe front), bend, outlet and after transmission of granules. Investigation ABS and FR-ABS granular materials charging characteristic of transmission, and discuss the corona discharge neutralizing charged materials validity. Experimental results show that, FR-ABS material brought electric potential was greater than ABS material at each measuring points. This result is charged with the sequence of electrification by inference. Corona discharge experiments show that, the plastic tube material carried by corona discharge potential increased significantly. Carbon steel pipe and stainless steel pipe using the corona discharge to neutralize potential are valid. This study demonstrated that metal tube use of autologous corona discharge, which can effectively neutralize the charged material. Recommend corona discharge device can add more layers steel wire to strengthen autologous corona discharge, in order to neutralize potential more effectively.