优秀自荐信（Excellent letter of recommendation）.docVIP

优秀自荐信（Excellent letter of recommendation） Regulation and attention of Shangqiu Yudong power plant double inlet and outlet ball mill??? [date: 2005-09-11]??? [from: HYPERLINK \t _blank Shangqiu rayhwa power plant chenfeng714 /%20 MERGEFORMATINET the INCLUDEPICTURE ? Abstract: This article mainly expounds the control characteristics of the direct blowing type double inlet and double outlet ball mill, elaborated several control strategies of mill load control, the total air volume control, powder position control and outlet temperature control and a pressure control loop, and the need to pay attention to problems in debugging. Keywords: dual inlet and outlet mill, capacity, wind, material level, outlet temperature, primary air and bypass wind. Preface The pulverizing system of a 2X300MW unit power plant is Shenyang Yudong heavy machinery manufacturing factory grinding system for direct injection type double inlet and outlet tube. This mill is the introduction of French Alstom Ltd technology, for the first time in domestic manufacturing and application in Yudong power plant. In this paper, the adjustment of the pulverizing system is introduced in detail. The system has no powder silo in the intermediate storage type pulverizing system, and the system is greatly simplified. The output of the coal mill is determined by the capacity, wind and primary air of the coal mill, so it can respond quickly to the load. The barrel of powder mill has certain storage capacity, therefore, the system has the advantages of direct fired pulverizing system and. 1, system overview Technological process of pulverizing system: The raw coal is fed into the mixing box from the original coal bunker through the coal feeder, and is dried by the bypass wind before grinding into the grinding machine by the hollow shaft. After a cold and hot air is mixed, the air baffle is passed into the mill, and the pulverized coal is blown out, and mixed with the bypass wind, the coal dust separator enters the