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Author: search.filters.author.Anantpinijwatna, AmataSubject: search.filters.subject.Process design

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    Item type:Publication,
    Complete design case study for pulp and paper industry
    (2022-01-01)
    Anantpinijwatna, Amata
    ;
    Charoensuppanimit, Pongtorn
    ;
    Mongkhonsiri, Ghochapon
    ;
    Gani, Rafiqul
    ;
    Assabumrungrat, Suttichai
    Pulp and paper industry is a traditional biorefinery system that produces low margin paper products at low innovation development. It needs business transformation to enhance profitability along with efficient material and energy consumption through process development of high-value bioproducts. In response to climate change concerns and declining petroleum resources, the concept of biorefinery has developed using biochemical and thermochemical technologies. To develop biorefinery together with the conventional pulp and paper industry, integrated biorefinery in the existing pulp mill has been designed as a long-term sustainable solution. A systematic framework is needed to synthesize and design promising integrated systems from numerous alternatives. A three-level methodology, involving Level-1 Base Case Design, Level-2 Optimization and Analysis, and Level-3 Innovation, is proposed as an effective approach to determine optimal technologies suitable for the transformation of the traditional system through superstructure optimization, process analysis, and process improvement in terms of economic and environmental issues. To achieve a sustainable development of the integrated biorefinery system, innovative alternatives are discovered to satisfy improvement targets. Computer-aided tools are employed to support systematic data collection, mathematical model formulation, and complicated problem solving. Case studies of synthesis, design and innovation tasks illustrating the application of the framework to obtain promising integrated pulp mill-biorefinery alternatives are presented.
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    Novel biorefinery-Integrated-Kraft-pulping network for sustainable development
    (2021-06-01)
    Mongkhonsiri, Ghochapon
    ;
    Anantpinijwatna, Amata
    ;
    Charoensuppanimit, Pongtorn
    ;
    Arpornwichanop, Amornchai
    ;
    Gani, Rafiqul
    Integration of the biorefinery concept to the existing Kraft-pulping process is undertaken to achieve a more sustainable development. This paper aims at developing a novel biorefinery-integrated-Kraft-pulping network with improved profitability, energy self-sufficiency and minimum CO<inf>2</inf> emission by employing technologies consisting of biofuel and biochemical productions, biomass gasification together with CO<inf>2</inf> capture and utilization. Three scenarios, including (I) the production of gasification-based dimethyl ether (DME); (II) the co-production of DME and succinic acid; and (III) the co-production of DME and succinic acid coupled with the CO<inf>2</inf> utilization, have been investigated. Among all scenarios, Scenario II exhibits the best economic performances as highlighted by the 74% increase of profit compared to the conventional process. Scenario III achieves the highest energy efficiency at 39% and an improved environmental performance due to the 65% reduction of CO<inf>2</inf> emission compared to the conventional process with only 0.7% profit reduction. Comparing to the biorefinery-integrated-Soda-pulping networks proposed by the previous work, the biorefinery-integrated-Kraft-pulping networks show higher performance on both economic and environmental improvements. Thereby confirming that the integration of the biorefinery network can improve the sustainability and enhance the economic benefit of the Kraft-pulping process beyond the conventional process.