Comparative analysis of Euler models of multiphase flows in the ANSYS software for the problem of spraying raw materials in a heat-carrier gas flow in the furnace production of carbon black

¹ Novosibirsk State University (NSU), 630090, Novosibirsk, Russia
² Kutateladze Institute of Thermophysics, 630090, Novosibirsk, Russia

Abstract

Carbon black (soot) is a product obtained by thermal decomposition (pyrolysis) of hydrocarbons (usually oil) in a heat-carrier gas flow. Carbon black is widely used as a reinforcing component in the production of rubbers and plastics. Tires use 70% of all carbon produced. It is produced in a furnace, by injecting raw hydrocarbon with nozzles into the stream of combustion products of natural gas (called heat-carrier gas), a spray jet is will be formed, accompanied by evaporation of raw materials, and pyrolysis in the end. It is important that the raw material is completely evaporated before pyrolysis begins, otherwise coke will form, contaminating the product. To improve the technology of carbon production, in particular, to ensure the complete evaporation of raw materials before the start of pyrolysis, it is impossible to do without mathematical modeling of the process itself. It is the most important way to obtain the most complete and detailed information about the features of the reactor. Such phenomena are usually modeled using multiphase flows.