CALCULATION OF PROPANE THERMAL CRACKING PROCESS PARAMETERS

Abstract

Thermal and one many thermocatalytic processes high temperature conditions is going This consider taking raw material first tubular in ovens certain temperature up to is heated. Some in processes the same as the tubular furnace at the time replace the reactor is doing In the oven placed serpentine of pipes beginning part raw material it heats up. Next in pipes cracking process goes. Raw material whom individual of hydrocarbons use when done unconverted raw material live reaction environment to give too favorable. Catalytic isomerization process of 50-65% isopentane from normal pentane is taken. 1-2% gas during the process hydrocarbons too doesn't buy N- pentanm non-isomerizable the part live again to the reactor when returned of isopentane to normal pentane according to it reaches 97-98%. According to the prepared model, the final indicator of the output of the target products (propylene + ethylene) and the output of these components relative to the total filling of the reactor were taken as optimality criteria during the process study. The essence of the recirculation method is that the mixture of reacting and non-reacting products enters the separator system after the reactor. Here they are separated from each other, and then the unreacted part is mixed with fresh raw materials and fed back into the reactor. In our case, only unreacted propane and ethane are given to recirculation, not all of the output products from the reactor. Because only they are converted into the intended products - propylene and ethane - by primary reactions. if a part of the devices included in the complex is not taken into account in the mathematical modeling and optimization of the process, the obtained value of the optimality criterion will be wrong. This can change the optimal value of the optimality criterion. In the complex systems of the mentioned processes, the separating node is one of the main conditions. A recirculation system usually consists of reactors, separators and other associated units. An inversely related process is carried out with a continuous output of reaction products between the steps and the input of the unreacted part of the previous raw material at each subsequent step. It seems clear that process optimization considering recirculation and kinetics simultaneously is usually not sufficient. To obtain realistic results, it is necessary to use the above equations together with the equations of the processes taking place in the separator.In this work, the results of the study of the preparation of the theoretical regularities of the adsorption-separation junctions of recirculated chemical-technological complexes and their practical use are shown. During the mathematical modeling, along with other nodes of the complex, the main attention was paid to the adsorption node and additions to German results in practice. Keywords: propane, cracking, n-pentane, isopentane, methane, hydrogen, hydrocarbon.