在水力除焦中采用变转速除焦水泵的探讨  

Study on variable speed decoking pump in hydraulic decoking

作　　者：张欣[1] 

机构地区：[1]中国石化集团洛阳石油化工工程公司,河南省洛阳市471003

出　　处：《炼油技术与工程》2011年第10期39-42,共4页Petroleum Refinery Engineering

摘　　要：在目前的水力除焦技术中普遍采用定转速除焦水泵,泵需要频繁启停且出口压力恒定不变,因而带来冲击、振动以及产生焦粉过多等问题。为解决此问题,介绍了一种采用变转速除焦水泵的技术,即通过液力偶合器或变频器等调速装置驱动,实现除焦水泵的无负荷启动、平滑调速,进而按需调节除焦水压力。结果表明:该技术使操作更灵活优化,并提高相关设备长周期运行的可靠性、减少焦粉的产生;可逐步升速,实现"回流-预充-钻孔"的操作程序,更经济节能。Fixed-speed decoking jet pumps are widely used in present hydraulic decoking process.Frequent start up,shutdown and fixed discharge pressure of the pumps often result in problems of impacting,vibration and excessive coke powder production.A hydraulic decoking technology in which variable speed decoking jet pumps are used is introduced.In the technology,variable speed equipment such as hydraulic coupling or variable frequency device is applied to unload the start-up of decoking jet pump,smoothly adjust the speed and control the decoking water pressure as required and perform decoking operation more conveniently and efficiently.The application of the technology has improved the flexibility of the decoking jet pumps and reliability of related decoking equipment,etc and reduced the coke powder production.The economics of the unit operation is improved.

关 键 词：水力除焦 除焦水泵 液力偶合器 变频调速 除焦控制阀 

分 类 号：TE966[石油与天然气工程—石油机械设备]