关键词: 加氢, 传热, 模拟, 催化剂, 模型

Abstract: At present,there are many reports about the overall energy balance and the large scale space heat release in hydrocracking process.Temperature distribution of catalyst bulk in hydrocracking process is rarely involved.Based on three-dimensional environment of real Honeycomb type hydrocracking catalyst,the Meshfree calculation solving Fourier partial differential equation is provided which uses the function of simulating industrial operating temperature as the boundary condition.The influence of external temperature fluctuation on the internal temperature distribution of the catalyst was analyzed using the calculated results.At the same time,the carbon distribution of honeycomb type catalyst cross section was analyzed by the method of energy spectrum scanning,and the calculation of internal temperature distribution of catalyst was carried out.The analysis results showed that the actual reactions in the catalyst were not isothermal reaction.At the same time,catalyst bulk temperature distribution was restricted to the fluctuation of reaction temperature hydrocracking reaction process outside and catalyst internal hotspot distribution.Catalyst bulk phase average temperature was influenced by heat of reaction,the catalyst particle size,material density,reaction space velocity and catalyst inner hotspot distribution.

Key words: hydrogenation, heat transfer, simulation, catalyst, model