Steady-state And Dynamic Simulation Of Steam Ethylene Cracking Process And Its Simulation Platform Creation

The cracking furnace is the core equipment of the ethylene production process, from the input of macromolecules raw materials to the output of small molecules, all major qualitative change in the cracking furnace. At the same time the main energy consumption of the entire process is also in the cracking furnace. Therefore, modeling the process of ethylene cracking and the formation of the simulation software, has important practical significance and regulation of the cracking process even ethylene plant optimization can bring huge economic benefits.This work is based on a factory30million tons/year ethylene plant process design conditions for the cleavage reaction of the cracking furnace process in HYSYS platform to build its static and dynamic models for rapid cooling, separation processes the logistics input data source in order to achieve the ethylene plantthe whole process simulation. Taking into account the pyrolysis products based the Reaction Mechanism Coilsim software able to handle petroleum hydrocarbon feedstock under the distribution range of C2-C33predicted characteristics, the paper first CAPE-OPEN interface technology to achieve the Coilsim cracking furnace model migration to Aspen Hysys platform,CAPE-OPEN interface data information exchange between in HYSYS and Coilsim software; For the different hydrogenation tail oil HVGO, naphtha NAP and light naphtha LNAP cracking feedstock, verify the simulation results are consistent with the design conditions and the actual working conditions of pyrolysis products distribution for ethylene process simulation to provide a consistentplatform environment. In order to simplify the complexity of the model to improve the efficiency of dynamic models for solving Kumar molecular reaction model using HYSYS platform PFR reactor structure to achieve the dynamic simulation of the cracking process, examine the main operating variables on the change in the temperature of the reactor and the product distributioncase, the simulation results are consistent with the characteristics of the actual industrial objects. The steady-state and dynamic models of this paper work to establish the cracking furnace to achieve convergence with the subsequent rapid cooling and separation processes, and provides a reliable model for industrial cracking furnace and ethylene operation optimization.