Modeling and Simulation of Reaction and Fractionation Systems for the Industrial Residue Hydrotreating Process

Abstract

The residue hydrotreating process plays a significant role in the petroleum refining industry. In this process, modeling and simulation have critical importance for process development, control, and optimization. However, there is a lack of relevant reports of plant scale due to complexity in characterizing feedstock and determining reaction mechanisms. In this paper, reaction and fractionation models are constructed and simulated for a real-life industrial residue hydrotreating process based on Aspen HYSYS/Refining. Considering the heavier and inferior residue, analytical characterization is carried out for feedstock characterization based on laboratory analysis data. Moreover, two reactor models with parallel structures are proposed to implement the intricate reaction network, namely, a hydrocracker reactor and a plug flow reactor. The former simulates lighter petroleum hydrotreating based on the built-in reaction network. The latter emulates the conversion of a peculiar, heavier resin and asphaltene, using a six-lump model, which expands the scope of the feedstock and improves the accuracy of the model. To obtain a realistic simulation of fractionation, the database-based delumping method is adopted to model it with proper pseudo-components. The simulation results, including temperature rise, hydrogen consumption, temperature distribution, product yield, product properties, indicate that the model is capable of reflecting the realistic process accurately.

Перспективные Схемы Реакторных Узлов Установок Гидроочистки

“…Последующее в дальнейшем ужесточение требований по снижению содержания серы в дизельном топливе достигалось вовлечением в гидрогенолиз уже основной массы трудногидрируемых сераорганических компонентов за счет увеличения продолжительности каталитического процесса, обеспечиваемой строительством на установках гидроочистки дополнительных реакторов, число которых увеличилось до двух-четырех без существенного изменения схемы и технологии процесса гидроочистки. При этом применялось последовательное или параллельное соединение реакторов в реакторном блоке, а также смешанные варианты, например сырье сначала параллельно гидрировалось в двух реакторах, а затем объединенный поток реакционной смеси поступал в третий реактор [1][2][3][4][5][6][7]. При необходимости увеличения глубины очистки время контакта реакционной смеси с катализатором резко возрастает и при невозможности увеличения объема реактора качество топлива достигается снижением производительности установок гидроочистки [8].…”

A dynamic sample augmentation Kriging metamodeling method for industrial residue hydrogenation process

“…In the petroleum refinery industry, the residue hydrogenation process (RHP) has attracted an increasing attention for heavy oil reuse. 1 Generally, the RHP embraces complex equipment, including reactors, high and low pressure separation devices, condensers, and reboilers. These devices have highly coupled thermodynamics and kinetic properties.…”

Validation of the Molar Flow Rates of Oil and Gas in Three-Phase Separators Using Aspen Hysys

“…Therefore, HYSYS still has the upper hand in the calculation of phase properties. No study has been done to compare all of these software(s) regarding the separation of reservoir fluids, but HYSYS gives quite close value to the actual plant condition [4,7]. Therefore, this research employs the use of HYSYS and compares the work of [4] which has previously compared CHEMCAD and UniSim in the separation of reservoir fluids.…”

“…It also calculates off-beat compositions of hydrocarbon mixtures. The suitability of Peng-Robinson in the simulation of some other reservoir fluids is discussed over the Soave-Redlich-Kwong cubic equation of state [7,19].…”