论文部分内容阅读
在煤化工厂、火力发电厂、炼钢冶金厂等重工业中,煤粉制备系统是其工艺系统中重要的能源提供系统,然而煤粉制备系统中却存在由煤粉传输管道破损造成的煤粉泄漏这一重大安全隐患事故。煤粉泄漏事故主要是由于在煤粉传输过程中,高压输送的煤粉对管壁冲蚀磨损,使管道的弯头、三通、变径等受磨损较大处管壁变薄,导致管道破损,使大量煤粉泄漏至空气中,进而在工程现场形成具备发生严重粉尘爆炸事故的危险环境。煤粉泄漏事故普遍存在于电力、煤
In coal chemical plants, thermal power plants, steel-making and metallurgical plants and other heavy industries, the coal preparation system is an important energy supply system in its process system, however, there is a pulverized coal leakage caused by the breakage of the pulverized coal transmission pipeline in the pulverized coal preparation system This is a major security risk accident. Pulverized coal leakage accident is mainly due to the pulverized coal in the transmission process, high-pressure transmission of coal on the wall erosion wear and tear, so that pipe elbows, tees, such as reducing the diameter of the larger tube wall thinning, resulting in pipe Damaged, so that a large number of coal leaking into the air, and then formed in the project site with a serious dust explosion hazardous environment. Pulverized coal leakage is widespread in electric power, coal