A study on blowdown of pressurized vessel containing CO2/N2/H2S at cryogenic conditions

Shafiq, Umar; Shariff, Azmi Mohd; Babar, Muhammad; Ali, Abulhassan

doi:10.1088/1757-899x/458/1/012077

Cited by 6 publications

(3 citation statements)

References 18 publications

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“…The extensive use of fossil fuels causes severe environmental issues such as global warming, ozone layer depletion due to stratospheric pollution, and rapid climate changes [1][2][3]. It is forecast that the existing production systems will not fulfill global energy demand due to the depletion of fossil fuels, which may lead to exponential prices of fossil fuels [4,5]. These issues require immediate attention to find alternative fuels with a minimal negative environmental impact [6,7].…”

Section: Introductionmentioning

confidence: 99%

Process optimization and simulation of biodiesel synthesis from waste cooking oil through supercritical transesterification reaction without catalyst

et al. 2023

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This study reports optimization and simulation of biodiesel synthesis from waste cooking oil through supercritical transesterification reaction without the use of any catalyst. Although the catalyst enhances the reaction rate but due to the presence of water contents in waste cooking oil, the use of catalyst could cause a negative impact on the biodiesel yield. The transesterification reaction without catalyst also offers the advantage of the reduction of pretreatment cost. This study comprises of two steps; first step involves the development and validation of process simulation scheme. The second step involves the optimization using Response Surface Methodology. Face-centered central composite design of experiments is used for experimental matrix development and subsequent statistical analysis of the results. Analysis of variance (ANOVA) is employed for optimization purpose. In addition, a sensitivity study of the process parameters including pressure, temperature, and molar ration of oil-to-methanol was conducted. The statistical analysis reveals that temperature is the most influential process parameter as compared to pressure and oil-to-methanol molar ratio. The optimization study results in the maximum biodiesel yield (94.16%) at an optimum temperature of 274.8°C, 7.02 bar pressure, and an oil-to-methanol molar ratio of 12.43.

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Section: Introductionmentioning

confidence: 99%

Process optimization and simulation of biodiesel synthesis from waste cooking oil through supercritical transesterification reaction without catalyst

et al. 2023

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“…Speed of the ship is here deemed to be a key factor, with low speed enhancing safety for passengers inside the ship during ventilation and high speeds being safer for general public outside the carrier during jettisoning [23]. Shafiq et al [24] performed a simulation work of CO2 depressurisation from a high-pressure vessel (4 MPa and 233 K) in relation to orifice sizes of 4.325 mm, 6.325 mm and 8.325 mm and found that risk of solidification and blockages during the blowdown process can be drastically reduced by selecting the smallest orifice diameter. In a following work, the authors [25] performed a modelling campaign and relative experimental validation to scrutinise dry ice formation during blowdown of CO2-CH4 mixture from a cryogenic distillation column at initial temperature of 243 K and pressure of 4 MPa.…”

Section: Introductionmentioning

confidence: 99%

Experimental study of accidental leakage behaviour of liquid CO2 under shipping conditions

Baroudi

Patchigolla

Thanganadar

et al. 2021

Process Safety and Environmental Protection

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“…As among the fossil fuels, natural gas is considered a clean fuel. Therefore the demand for natural gas increases continuously [4]. However, natural gas may have some impurities depending upon the location and geological conditions of the reservoir [5].…”

Section: Introductionmentioning

confidence: 99%

Optimization of Cryogenic Carbon Dioxide Removal from CO2-CH4 System by Response Surface Methodology

Babar

Bustam

Ali

et al. 2020

MSF

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The presence of high CO2 content in natural gas reservoirs is one of the significant threats to the environment. Cryogenic CO2 capture technology is amongst the emerging technologies used for natural gas purification before customer use. In this research work, the binary CO2-CH4 mixture having 75% CO2 content is studied. Aspen Hysys simulator with Peng Robinson property package is used for the prediction of phase equilibrium data for the binary mixture. The data obtained through the Aspen Hysys simulator is optimized for the S-V two-phase region for maximum CO2 capture. Response surface methodology is used for the optimization of the predicted data. Optimization of the pressure and temperature conditions is done to obtain maximum CH4 in the top stream and minimum CO2 with minimum energy requirement. In this research work, the pressure and temperature ranges selected from the predicted phase equilibrium data for the optimization are 1 to 20 bar and-65 to-150 °C respectively. At atmospheric pressure and-123.50 °C, the desirability value is maximum, which is 0.843. under these conditions, the CO2 and CH4 in the top product stream are 1070.72 Kg/hr and 152.04 Kg/hr respectively with an energy requirement of 2.087 GJ/hr.

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A study on blowdown of pressurized vessel containing CO₂/N₂/H₂S at cryogenic conditions

Cited by 6 publications

References 18 publications

Process optimization and simulation of biodiesel synthesis from waste cooking oil through supercritical transesterification reaction without catalyst

Process optimization and simulation of biodiesel synthesis from waste cooking oil through supercritical transesterification reaction without catalyst

Experimental study of accidental leakage behaviour of liquid CO2 under shipping conditions

Optimization of Cryogenic Carbon Dioxide Removal from CO<sub>2</sub>-CH<sub>4</sub> System by Response Surface Methodology

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