Research And Development Of Coke Tower Health Monitoring System

Coke tower is the core equipment of coking unit in petrochemical industry.Its healthy operation is of great significance to the development of petroleum refining industry.In recent years,many scholars and experts have carried out corresponding research on coke tower,and achieved some research results.But there are the following problems:(1)In view of cracks,inclination and bulge deformation of coke tower,there is a general lack of timely and effective health monitoring of equipment.The traditional way is to find problems and stop production and maintenance.It not only affects the economic benefits of enterprises,but also has security risks.(2)Previous studies on coke tower are mostly based on the finite element analysis of simplified structure and process,but the simulation results are often different from the actual situation.(3)Temporary data acquisition and experiment can only get the health condition of coke tower at a certain stage,and the health problems of coke tower may occur at any time with the change of time,so it has certain limitations.This paper takes the coke tower of a petrochemical company as the research object,carries out the health monitoring research and system development of the coke tower.Firstly,the structure and process characteristics of the coke tower are studied,and simulated by ANSYS software.The common health problems of the coke tower are analyzed,and the factors affecting the health of the coke tower are found.It is found that cracks,deformations and inclinations are closely related to the temperature difference stress.By studying the parts of coke tower which are prone to health problems during service and combining with the actual situation on site,the implementation plan of health monitoring for coke tower is formulated.Extract the main factors affecting the health of equipment.The method of factor analysis was used to evaluate the health of the patients,combined with the measured data collected by sensors.However,the factors affecting the health of equipment are not single independent factors such as inclination and stress,but complex systems composed of interrelated and mutually restrictive factors.Therefore,based on the weight calculation of the analytic hierarchy process and the calculation of the comprehensive evaluation value of the fuzzy comprehensive evaluation method,a health evaluation model is constructed.The evaluation model is integrated into the remote health monitoring system to realize the health evaluation of coke tower.A set of health monitoring system has been developed.The field data acquisition terminal obtains the parameter data which has a great impact on the health of coke tower through sensors and transmits it to remote server.The remote health monitoring terminal visualizes the data and realizes the remote health monitoring of coke tower.After the preliminary development of the monitoring system,taking the No.3 coke tower of a petrochemical company as the specific research object,the installation and deployment of the monitoring system were carried out,and the experimental research was carried out.According to the data collected in the monitoring system,the data are processed and analyzed.It was found that the monitoring data changed periodically with the coking process,especially during the hydraulic decoking stage,the parameters would fluctuate suddenly.In monitoring,the temperature curve has a good mapping function,and can map other parameter data to the corresponding process for data analysis.Monitoring results show that the maximum tilt of tower body is 6.8 degrees,and there are many acoustic emission events due to strong temperature difference stress during cold coking.At the same time,the concentrated area of AE source has been found in the tower wall,and attention should be paid to it in the next overhaul.