The Development Of Oil Fracturing Calcination Process Control System

Oil fracturing proppant is used for the oil well support, and it can improve oil and gasproduction30~50%. More and more attention has been paid to oil proppant production as oiland gas reserves become less and less. Domestic foreign scholars has done a large number ofstudies on the technology, equipment and level of control on oil proppant. Some progress hasbeen made. However, most of the domestic oil proppant manufacturers automation level isrelatively backward, and some even still use the method of instrument control and manualcontrol. These manufacturers only can produce low strength proppant due to the laggingcontrol level. In order to improve the quality of the oil proppant, as well as for therequirements of environmental protection, it is significant to research a oil proppantcalcination process automation control system.This paper analyzes the process of oil proppant calcination production. I design someautomatic control loops according to each part of the device characteristics and controlrequirements, which can intelligent monitor the production process without people. Thisreduces the errors of the human operator, thus improves the stability and reliability of thesystem, improves the quality of oil proppant products, and brings good economic benefits tothe enterprise.The design of control system use ABB distributed control system. The Control systemincluding the lower computer and the upper computer. The lower computer use ABB PM573controller and use AC500Control Builder to program. The upper computer includes centralcontrol and on-site control. The central control uses iFIX software and the site control usesMT6100iH touch screen, The EB8000Project Manager is used to programme, The touchscreen and the central control together to complete all control functions. The controlstrategies include chain start and stop control, automatic loop control, PID control and fuzzycontrol. The links that need multiple devices together to complete a control function adoptschain start and stop control, such as broken links, click on the group start, then the hoist,valves, feed belt and crushers order start, eliminating the trouble to manually start eachdevice. Add the automatic control loop in the control of the mill, make the current of the mill,oil temperature, water temperature, oil pressure and feeder drive in a chain. Automatically control the feeder start and stop based on the feedback parameters of the mill, eliminating theneed for human monitoring operation. In the control of the temperature of the drying kiln,conducting real-time detection of the kiln temperature, and the degree of opening of the hotair valve is calculated by the PID algorithm through PID algorithm so that the drying kilntemperature is kept constant within the range. The rotary kiln process is complex, highlynonlinear, large delay, multivariate strong coupling, thus we adopt fuzzy control. Selectedkiln temperature, the opening degree of kiln gas gate valve, the opening degree of the kilnpetroleum proppant material valve and burning zone temperature process parameters, weanalyze and census a large amounts of data of previous manual operation, fuzzy control rulesare achieved and then achieve effective control of the rotary kiln temperature.