Risk-based process plant design considering inherent safety

Rathnayaka, Samith; Khan, Faisal; Amyotte, Paul

doi:10.1016/j.ssci.2014.06.004

Cited by 89 publications

(33 citation statements)

References 26 publications

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“… 70 Therefore, the use of computer-aided tools requires setting several parameters and variables, which include aspects such as thermodynamic models and property estimation equations, type of process (steady-state or dynamic), selection of equipment, and downstream units, among others. 71 In this study, the commercial software Aspen Plus was used for developing process simulations. Much data are then provided by such modeling; extended mass/energy balances, property estimation, azeotrope behavior, rigorous vapor–liquid equilibria, and overall and processing unit yields, among others.…”

Section: Methodsmentioning

confidence: 99%

Comparison of Biobutanol Production Pathways via Acetone–Butanol–Ethanol Fermentation Using a Sustainability Exergy-Based Metric

et al. 2020

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The incorporation of sustainability aspects into the design of chemical processes has been increasing since the last century. Hence, there are several proposed methodologies and indicators to assess chemical facilities through process analysis techniques. A comprehensive assessment involving economic, environmental, safety, and exergy parameters of two alternatives for butanol production from Manihot esculenta Crantz (cassava waste) is presented in this study. The modeling of process topologies involved using Aspen Plus software. Topology 1 generated a product flow rate of 316,477 t/y of butanol, while this value was 367,037 t/y for topology 2. Both processes used a feed flow of 3,131,439 t/y of biomass. This study used seven technical indicators to evaluate both alternatives, which include the return of investment, discounted payback period, global warming potential, renewability material index, inherent safety index, exergy efficiency, and exergy of waste ratio. Otherwise, this study implemented an aggregate index to assess overall sustainability performance. The results revealed that topology 2 presented higher economic normalized scores for evaluated indicators, but the most crucial difference between these designs came from the safety and exergetic indexes. Topology 1 and topology 2 obtained weighted scores equaling to 0.48 and 0.53; therefore, this study found that the second alternative gives a more sustainable design for butanol production under evaluated conditions.

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Section: Methodsmentioning

confidence: 99%

Comparison of Biobutanol Production Pathways via Acetone–Butanol–Ethanol Fermentation Using a Sustainability Exergy-Based Metric

et al. 2020

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“…The Dow Fire and Explosion Index is one of the most implemented procedures for seeking risk identification, although indicator-based methods such as the inherent safety index (ISI) or the prototype index of inherent safety (PIIS) has been addressed for such purpose. 32 Rathnayaka et al 33 highlighted that the use of inherently safer design principles has turned into a decision-making tool based on the sustainable process design approach. Process safety remains an active topic regarding process analysis.…”

Section: Introductionmentioning

confidence: 99%

Process Analysis of Hydrogen Production via Biomass Gasification under Computer-Aided Safety and Environmental Assessments

2020

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The growing awareness to advance new ways to transform renewable materials for producing clean fuels, under technical and sustainable viability, is evident. In this regard, hydrogen arises as one of the cleanest and energetic biofuels in the market. This work addresses the modeling and evaluation of a biomass gasification topology employing process simulation along with an environmental and inherent safety analysis. The presented pathway considered two renewable raw materials (cassava and rice waste) based on their vast availability in north Colombia regions. We employed Aspen Plus process simulation software to model the process, setting biomasses (and ash content) as nonconventional solids in the software and inclusion of FORTRAN subroutines for handling solid properties. Otherwise, the environmental evaluation was performed applying the waste reduction algorithm (WAR). At the same time, safety assessment involves a comprehensive approach based on the inherent safety index (ISI) and the process route index (PRI) methods. Data generated from the implementation of rigorous process simulation of biomass gasification allowed us to determine the needed aspect for performing process analysis methodologies. Results revealed that this topology generates a total flow of 3944.51 kg/h with more than 97% vol of H 2 , from the sustainable use of 19,243 kg/h of cassava waste and 15,000 kg/h of rice straw. From the environmental viewpoint, the process showed moderately to a high overall rate of potential environmental impacts (PEIs), with a higher contribution from process sources than energy sources. It indicates that most of the generated impacts would come from self-operation than from the energy supply generation. In the case of process safety, the topology obtained an ISI score of 35, which represents that modeled gasification would operate below 50% of the expected neutral standard for a physical–chemical process. Complementing the safety evaluation, the obtained PRI suggests that compared to other processes, the analyzed topology shows relatively adequate performance considering the nature of this type of process.

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“…Inherently safer design has been used in industrial process gradually . In this article, the process of 3‐methylpyridine oxidized by hydrogen peroxide was studied.…”

Section: Introductionmentioning

confidence: 99%

Inherently safer design for synthesis of 3‐methylpyridine‐N‐oxide

Hua

Pan

et al. 2017

Process Safety Progress

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Alkyl pyridine‐N‐oxide can decompose to pyridine which readily leads to explosion accident in air. Therefore, risk analysis and inherently safer design are necessary for this process. This article aims to study the thermal hazards of the process of 3‐methylpyridine oxidized by hydrogen peroxide, and then the corresponding Inherently Safer Designs (ISDs) were proposed. The inherent hazards during the process were first qualitatively evaluated by Qualitative Assessment for Inherently Safer Design. Then, the reaction calorimeter was employed to analyze the thermal hazards of the target reaction. Meanwhile, the Integrated Inherent Safety Index methods were simplified to quantitatively estimate the level of inherent safety of the process. The results show that the potential risk of the process is 87.2% which is at the high risk level. Based on the hazard identification and assessment results, three ISDs, namely adding catalyst (ISD I), improving reaction condition (ISD II), and using a tubular (ISD III), were proposed to enhance the safety. Finally, combining comparative experiments with ISI methods, an effect evaluation model for ISD was established to verify the rationality of the ISDs. The results indicate that the reaction hazards are diminished when three ISDs are utilized in production process. The inherent safety level of the reaction is increased by 22.2%, 50.7%, and 31.8%, respectively. © 2017 American Institute of Chemical Engineers Process Process Saf Prog 37:355–361, 2018

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Risk-based process plant design considering inherent safety

Cited by 89 publications

References 26 publications

Comparison of Biobutanol Production Pathways via Acetone–Butanol–Ethanol Fermentation Using a Sustainability Exergy-Based Metric

Comparison of Biobutanol Production Pathways via Acetone–Butanol–Ethanol Fermentation Using a Sustainability Exergy-Based Metric

Process Analysis of Hydrogen Production via Biomass Gasification under Computer-Aided Safety and Environmental Assessments

Inherently safer design for synthesis of 3‐methylpyridine‐N‐oxide

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