| Abstrakt: |
During the fuel injection stage of the FCC unit, the connection between the reaction and the compressor is very important, which is the key to ensure the control of the reaction pressure and work without flaring at the inlet of the compressor. Due to the many interference factors during the start-up fuel injection process, the operation is unstable, it is necessary to discharge flaring at the compressor inlet several times to control the reaction pressure, so that a large number of gas-rich components are discharged to the flaring system for combustion. Through practical exploration, combined with the performance parameters of the compressor, several ways of start-up without flaring are compared, and finally the shortest way of using dry gas and injection of feedstock is chosen to start the unit. By formulating detailed start-up plans and operating principles, optimizing the process, accurate control of start-up pressurized dry gas, reaction injection amount, compressor speed, compressor anti-surge amount and other parameters can be carried out in the actual start-up process. The goal of without flaring during the start-up process is achieved, effectively reducing environmental pollution, avoiding material loss during the start-up process, and realizing green environmentally friendly start-up. [ABSTRACT FROM AUTHOR] |
