Numerical Simulation for Preheating New Submarine Hot Oil Pipelines

Wang, Yong; Wei, Nan; De-jun, Wan; Wang, Shouxi; Yuan, Zeming

doi:10.3390/en12183518

Cited by 9 publications

(3 citation statements)

References 43 publications

(88 reference statements)

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“…The curve is parabolic in shape; with the increase in gas flow rate, the scrap pre-heating temperature up to 1197 K is gradually shortened, and the amount of time reduction gradually decreases. This is consistent with the findings in the review [43]. In addition, the average scrap temperature pre-heating times to 1197 K were 13.89, 9.98, 7.75, and 6.41 min for gas flow rates of 4000, 5000, 6000, and 7000 m 3 /h, respectively.…”

Section: Temperature Field Of Hot Metal Ladlesupporting

confidence: 91%

Influence of Oxy-Fuel Lance Parameters on the Scrap Pre-Heating Temperature in the Hot Metal Ladle

Zhuang

Zhan

Wang

et al. 2023

Metals

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As one of the vital ways to improve the converter heat balance and increase the scrap ratio, scrap pre-heating technology has attracted much attention from researchers. The aim of this paper is to reveal the effect of the oxy-fuel lance parameters on the temperature field, flow field, and scrap pre-heating temperature in the ladle by means of numerical simulations. For this, a three-dimensional mathematical model containing the turbulence model, the porous medium heat balance model, and other models has been developed. The research results show that the rational and correct choice of gas flow rate, lance position, and nozzle angle has an important influence on the temperature field and the average scrap temperature. When the gas flow rate increases, the internal annular combustion zone of the scrap gradually expands, the cold zone at the bottom of the scrap continues to decrease, and the average scrap temperature keeps increasing. When the gas flow rate is 5000 m3/h, and the average scrap temperature reaches 1197 K, the pre-heating time is 9.98 min. Lowering the oxy-fuel lance position helps to reduce the cold zone at the bottom of the scrap and increases the average temperature in the cold zone. Reasonable selection of the nozzle angle is conducive to improving the uniformity of the flow field. When the angle of the nozzle is 15°, the gas circulation zone is the largest, and the time to reach an average scrap temperature of 1197 K is the shortest.

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Section: Temperature Field Of Hot Metal Ladlesupporting

confidence: 91%

Influence of Oxy-Fuel Lance Parameters on the Scrap Pre-Heating Temperature in the Hot Metal Ladle

Zhuang

Zhan

Wang

et al. 2023

Metals

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“…According to research, 23,24 the dynamic viscosity temperature curve of deep‐sea heavy oil shows a turning point at 80°C, with a sharp increase in dynamic viscosity below 80°C and an increase in difficulty in lifting heavy oil. After reaching 80°C, the dynamic viscosity decreases and the lifting difficulty decreases.…”

Section: Resultsmentioning

confidence: 99%

Study on the effect of carbon fiber ply angle on thermal response of CFRP laminate based on the thermal resistance network model

Bao,

Ma,

Yang

et al. 2023

Polymer Composites

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Carbon fiber reinforced polymer (CFRP) exhibits different heat transfer phenomena along the fiber direction and the transverse direction during the heat transfer process due to its anisotropic thermo‐physical properties, which makes it difficult to quantitatively analyze the overall thermal performance of CFRP with different ply angles. A thermal resistance network model of composite material considering fiber ply angle and heat transfer direction was developed based on the series–parallel resistance computing method, and it was applied to describe the test results measured by the thermal response tests of unidirectional carbon fiber laminates. Thermal resistance Rx along the heat transfer direction and Ry transverse to the heat transfer direction calculated by the proposed model, which are related with the thermal response of the specimen, can be utilized to reflect the temperature values and temperature distribution maps. It was found that as the fiber ply angle θ increases from 0° to 45°, thermal resistance in the x‐axis direction increases from about 0.13 K/W to 2.56 K/W, while thermal resistance in the y‐axis direction decreases about 48.7%. As a result, major axis of quasi‐ellipse temperature profile changes by about +45° relative to the x‐axis.Highlights A CFRP thermal resistance network model considering ply angle was proposed. The series–parallel thermal resistance method is used to calculate Rx and Ry. The ply angle from 0° to 45°, Rx increases several times and Ry decreases by half. Major axis of elliptic temperature curve changes by +45° relative to the x‐axis.

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“…Together with the unique composition of fireflooding exhausts, getting the physical properties accurately during the whole operation is a major problem to be solved for reinjection engineering. Simulation is the most economical and intuitive research method for oil and gas processing and transporting systems [25]. For the reinjection project of the fire-flooding exhaust, it can realize the prediction of the gas physical properties under different operating conditions, thus contributes to the precise design and safe operation.…”

Section: Gasmentioning

confidence: 99%

Evaluation of Prediction Models for the Physical Properties in Fire-Flooding Exhaust Reinjection Process

et al. 2022

Self Cite

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The reinjection of the fire-flooding exhaust is a novel disposal process for handling the exhaust produced by the in-situ combustion technology. For reasonable process design and safe operation, it is of great significance to select an optimum property calculation method for the fire-flooding exhaust. However, due to the compositional particularity and the wide range of operating parameters during reinjection, the state equations in predicting the exhaust properties over the wide range of operating parameters have not been studied clearly yet. Hence, this paper investigates the applicability of several commonly-used equations of state, including the Soave–Redlich–Kwong equation, Peng–Robinson equation, Lee–Kesler–Plocker equation, Benedict–Webb–Rubin–Starling equation, and GERG-2008 equations. Employing Aspen Plus software, the gas densities, compressibility factors, volumetric coefficients, and dew points for five exhaust compositions are calculated. In comparison with the experimental data comprehensively, the result indicates that the Soave–Redlich–Kwong equation shows the highest precision over a wide range of temperature and pressure. The mean absolute percentage error for the above four parameters is 3.84%, 5.17%, 5.53%, and 4.33%, respectively. This study provides a reference for the accurate calculation of the physical properties of fire-flooding exhausts when designing and managing a reinjection system of fire-flooding exhaust.

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Numerical Simulation for Preheating New Submarine Hot Oil Pipelines

Cited by 9 publications

References 43 publications

Influence of Oxy-Fuel Lance Parameters on the Scrap Pre-Heating Temperature in the Hot Metal Ladle

Influence of Oxy-Fuel Lance Parameters on the Scrap Pre-Heating Temperature in the Hot Metal Ladle

Study on the effect of carbon fiber ply angle on thermal response of CFRP laminate based on the thermal resistance network model

Evaluation of Prediction Models for the Physical Properties in Fire-Flooding Exhaust Reinjection Process

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