An Overall Velocity Distribution and Optimization Method for Crude Oil Fouling Mitigation in Heat Exchanger Networks

Wang, Yufei; Liu, Ruonan; Feng, Xiao; Zhan, Shuie

doi:10.1021/acs.iecr.7b01569

Cited by 5 publications

(6 citation statements)

References 26 publications

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“…The results obtained in this paper are consistent with previously reported works. 9,10 On the other hand, the flow rate directed to branch A decreased consistently as the PHT temperature rises, from 49 to 41% (Table 4). Figure 6 clearly shows the difference between the fouling rates in the hottest heat exchangers (E3A and E3B) and the coldest ones (E1A and E1B).…”

Section: ■ Case Studymentioning

confidence: 96%

“…Problem Definition. In this section, the proposed methodology is applied to an example presented by Wang et al, 10 and it is illustrated in Figure 3. The PHT is composed of nine heat exchangers, six hot streams, and the crude oil is the cold stream.…”

Section: ■ Case Studymentioning

confidence: 99%

“…The total pressure drop on the tube side in each heat exchanger is composed of three factors, as expressed in the following where j ∈ HE and τ ∈ TH .…”

Section: Heat Exchanger Network Modelmentioning

confidence: 99%

“…A better performance was achieved by velocity redistribution through the network. In a later work, Wang et al 10 proposed a method to improve HEN performance by optimizing the velocity with comprehensive considerations of heat transfer, pressure drop, and tube-side fouling. Liu et al 11 proposed a dynamic optimization of velocity distribution for fouling mitigation in a simplified PHT, also considering the fouling occurrence only inside the tubes.…”

Section: ■ Introductionmentioning

confidence: 99%

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Optimization of Flow Rate Distribution in a Crude Oil Preheat Train Considering Fouling Deposition in Shell and Tube Sides

Carvalho

Ravagnani

2022

Ind. Eng. Chem. Res.

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The deposition of an undesired material on the heat transfer surfaces is a recurrent problem that affects the overall performance of heat exchanger networks (HENs). A wide variety of empirical and semiempirical models are available for predicting the fouling behavior. In this work, there are considered different predominant fouling mechanisms at each side of the shell and tube heat exchangers used to preheat crude oil from a refinery. Adopting the mass flow rates at the parallel branches of the HEN as optimization variables, an optimization model is proposed to find the minimum total annual cost for 12 months of uninterrupted operation. The model was coded in MATLAB and solved using a simulated annealing algorithm. The results showed that fouling accumulation in both heat exchanger sides significantly impacted the heat recovery and increased operating costs. The proposed methodology was able to decrease the total annual cost in $4.6516 × 10 4 when compared to the base case.

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Section: ■ Case Studymentioning

confidence: 96%

Section: ■ Case Studymentioning

confidence: 99%

“…The total pressure drop on the tube side in each heat exchanger is composed of three factors, as expressed in the following where j ∈ HE and τ ∈ TH .…”

Section: Heat Exchanger Network Modelmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Optimization of Flow Rate Distribution in a Crude Oil Preheat Train Considering Fouling Deposition in Shell and Tube Sides

Carvalho

Ravagnani

2022

Ind. Eng. Chem. Res.

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show abstract

“…If some measures are taken to prevent the accumulation of the fouling in the reactor in the transport and adhesion stages, the purpose of anti-fouling or effectively reducing the fouling in the reactor would be achieved. It was reported that high Reynolds numbers result in lower amounts of the fouling inside processing equipment (Shen et al 2018;Wang et al 2017). Therefore, low Reynolds number obviously leads to the faster formation of fouling (Zhang et al 2018;Palsson et al 2013).…”

Section: Introductionmentioning

confidence: 99%

A soft tubular model reactor based on the bionics of a small intestine: anti particulate fouling by peristalsis

Zhang

et al. 2021

Braz. J. Chem. Eng.

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The formation and accumulation of the fouling in traditional reactors made of rigid materials is a serious issue in industry, and the general fouling inhibition measures and cleaning are cumbersome, time-consuming and high cost. In this study, a new soft flexible tubular reactor (i.e. the small intestine model reactor, SIMR) was designed and constructed based on bioinspiration of the structural features and functionalities of the human small intestine. The anti-particulate fouling and the cleaning of the fouling were achieved through the SIMR with the simulated peristalsis, and the effects of antifouling were found to depend on the peristaltic frequency and effective peristaltic distance. The experimental results showed that the increased local Reynolds number induced by the increased peristaltic frequency reduced the fouling percentage of particulates in the SIMR. The fouling percentage at local Reynolds number of 2433 decreased about 37% compared with that at local Reynolds number of 159. The fouling percentage decreased 67.1% when the effective distance of peristalsis increased to 17.2 cm. The regular change of peristaltic location significantly decreased the fouling percentage. Under the peristaltic frequency of 40 times/min, the fouling percentage in the SIMR with regular change of the peristaltic location was reduced by 78.7% compared with that without peristalsis. The peristalsis noticeably facilitated the cleaning of the fouling in the SIMR, and basically all the fouling in the SIMR was cleaned up at local Reynolds number of 1864 induced by the peristaltic frequency of 30 times/min.

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Applying plate heat exchangers in crude preheat train for fouling mitigation

Wang

Liu

et al. 2021

Chemical Engineering Research and Design

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An Overall Velocity Distribution and Optimization Method for Crude Oil Fouling Mitigation in Heat Exchanger Networks

Cited by 5 publications

References 26 publications

Optimization of Flow Rate Distribution in a Crude Oil Preheat Train Considering Fouling Deposition in Shell and Tube Sides

Optimization of Flow Rate Distribution in a Crude Oil Preheat Train Considering Fouling Deposition in Shell and Tube Sides

A soft tubular model reactor based on the bionics of a small intestine: anti particulate fouling by peristalsis

Applying plate heat exchangers in crude preheat train for fouling mitigation

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