Distributed economic model predictive control with pseudo-steady state modifier adaptation for an industrial fluid catalytic cracking unit

Huang, Meng; Zheng, Yongjun; Li, Shaoyuan

doi:10.1016/j.cherd.2022.02.034

Cited by 5 publications

(4 citation statements)

References 37 publications

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“…To illustrate the proposed EMPC scheme, the algorithm is applied to the FCCU model, which has been modeled differently in literature. [25][26][27] This paper considers a simplified FCCU process based on the plant in Jiujiang, China, consisting of a regenerator and a riser reactor. The mechanism of the system is summarized below.…”

Section: Fccu Systemmentioning

confidence: 99%

Enhancing dynamic operation optimization feasibility for constrained economic model predictive control systems

Qi,

2023

Intl J Robust & Nonlinear

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Based on the hierarchical control structure, optimization and control problems of large‐scale and multivariate plants are solved sequentially. The economic performance of the plant plays an essential role in the plant‐wide modern industry. The optimal operating conditions will change as the economic criteria changes throughout the operation of the plant as the result of variations in raw material prices, product prices, production demand, market fluctuations, disturbances, and so forth. In reality, soft constraints are frequently used to denote the production requirements of various operating conditions. In order to improve economic performance and guarantee feasibility for the entire plant operation, a novel economic model predictive control (EMPC) strategy is proposed to control the constrained multi‐variable process system with varying economic performance criteria under soft constraints. By incorporating the transient steady‐state and two categories of slack variables for soft constraints, a modified economic performance index is optimized to cope with the changing criteria. In addition, a contractive constraint is added to the closed‐loop system to guarantee stability for non‐dissipative stage costs. This approach ensures recursive feasibility and asymptotic stability. The effectiveness of the proposed method is demonstrated by numerical examples and the fluid catalytic cracking unit (FCCU) process.

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Section: Fccu Systemmentioning

confidence: 99%

Enhancing dynamic operation optimization feasibility for constrained economic model predictive control systems

Qi,

2023

Intl J Robust & Nonlinear

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“…Petroleum is an organic mixture of liquids named crude oil and natural gas [5]. This occurs naturally and was formed millions of years ago in the ground, Crude oil has different types differs from oilfield to oilfield in composition and color, from low viscosity pale yellow liquid to heavy black "treacle" consistencies [5].…”

Section: A Refining Of Petroleummentioning

confidence: 99%

“…Fluidized catalytic cracking is one of the most important processes used in petroleum refineries as a conversion process [5]. It is used to convert the high-molecular weight hydrocarbon fractions of crude oils to more valuable gasoline, olefinic gases, and other products [10].…”

Section: B Fluidized Catalytic Cracking (Fcc)mentioning

confidence: 99%

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Investigation and Control of Fluidized Bed Catalytic Cracking Unit

Omer¹,

Ahmed

Gasmelseed

2022

jkues

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The fluidized catalytic cracking (FCC) unit is one of the main units of the oil refinery, its objective is to upgrade heavy low-value petroleum streams into higher-value products, mainly gasoline and olefin. In this process the catalyst is circulated into the regenerator, the coke is burned, and the catalyst is regenerated. Many parameters are used to control FCC, the most important is temperature, which should be kept at (505C ) and the catalyst temperature (655 C). Other parameters are the level and flow rate of the catalyst. In this work, a control strategy was built and the transfer functions were detected, so, the characteristic equations were calculated as well as the open-loop transfer functions. Tuning, stability analysis and simulation response of the system were achieved by using Routh, direct substitution, RootLocus and bode methods

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Artificial intelligence perspectives: A systematic literature review on modeling, control, and optimization of fluid catalytic cracking

Khaldi,

Al-Dhaifallah,

Taha

2023

Alexandria Engineering Journal

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Distributed economic model predictive control with pseudo-steady state modifier adaptation for an industrial fluid catalytic cracking unit

Cited by 5 publications

References 37 publications

Enhancing dynamic operation optimization feasibility for constrained economic model predictive control systems

Enhancing dynamic operation optimization feasibility for constrained economic model predictive control systems

Investigation and Control of Fluidized Bed Catalytic Cracking Unit

Artificial intelligence perspectives: A systematic literature review on modeling, control, and optimization of fluid catalytic cracking

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