112-4 RIKT Large Centrifugal Compressor In The Qiangang Steel Application Of Oxygen In The Process

Currently large scale,diversification is the development direction of domestic and foreign oxygen air separation equipment,and supporting the compressor has also obtained the rapid development.Compressor control system usually adopts the PLC control,under the premise of surge protection,to control the outlet pressure,and oxygen flow on raw materials in the compressor,air compressor,only in the empty sub unit start and stop in the process of pressure control,other state of air compressor in the quantity of operation control;in addition,subject to confidentiality,after-sale maintenance,and other practical problems,compressor PLC control system has been difficult point in us,once the failure directly influence air unit operation,and even disrupt the rhythm of the company's production.The inlet and outlet valves,operating parameter monitoring,alarm and surge protection and control the Shougang Qiangang steel 2#35000Nm3/h oxygen air device supporting Mantuobo Ag Switzerland company production RIKT 112-4 type large centrifugal compressor as the research object,on the basis on the study of its internal structure,the basic composition,the PLC control system transformation,an oxygen device using the CS3000 system is realized.Large centrifugal compressor safe,stable,economical and efficient operation,has been the user's goal,security is the premise of all.This paper also introduces RIKT112-4 type compressor under the premise of security and stability,equipment operation status and daily breakdown and investigation,through personal experience of equipment failure,emphasizing the the importance of Impeller Strength Inspection,testing,tilting pad bearing high operating temperature for analysis,through the transformation of related to solve the the problem and ensure the safety of the compressor,smooth operation.Practice has proved that through the transformation of RIKT 112-4 type large centrifugal compressor the actual operating conditions of exploration,the problems to solve and control system,realizes the equipment in oxygen flow stability,economy,efficiency and reduce the product cost,bring the good economic benefits,and more scientific grasp of foreign advanced technology,to meet China's actual development of large centrifugal compressor independent design and improving the manufacturing level,increase the oxygen flow in large centrifugal compressor using technology,laid the technical foundation.