Simulation of Spray Polymerisation and Structure Generation in Spray Drying by Single Droplet Models
Spray polymerisation has a long time been discussed as a promising process, yet, with little knowledge on cause-and-effect relationships between drying and chemical reactions. This work develops a new single droplet model of combined solution drying and free radical homopolymerisation, based on th...
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| フォーマット: | Online |
| 言語: | 英語 |
| 出版事項: |
Logos Verlag Berlin
2025
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| 主題: | |
| オンライン･アクセス: | https://library.oapen.org/handle/20.500.12657/100245 |
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| _version_ | 1869517584152395776 |
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| author | Säckel, Winfried |
| author_browse | Säckel, Winfried |
| author_facet | Säckel, Winfried |
| author_sort | Säckel, Winfried |
| collection | Directory of Open Access Books |
| description | Spray polymerisation has a long time been discussed as a promising process, yet, with little knowledge on cause-and-effect relationships between drying and chemical reactions. This work develops a new single droplet model of combined solution drying and free radical homopolymerisation, based on the method of moments. New, consistent approaches for moments’ diffusion and the reaction-diffusion system are derived to ensure conservation. Simulations reveal peculiarities of the process such as that, due to drying, polymerisation happens mostly in bulk and monomer evaporation leads to a poor yield. Various process variants and simulation models are discussed. The impact of process parameters is examined by means of numerical DoEs. The second part presents a novel approach for the simulation of structure evolution in suspension drying. The meshfree SPH method is used to model the relevant physical effects on a detailed scale during the first and second drying period. New implementations of physical effects are derived: heat and mass transfer based on linear driving forces, an implicit solution of the heat equation, several approaches for crust formation and a new formulation of surface tension by pairwise forces. The formation of dense structures as well as hollow granules can be simulated. Model parameters influence crust formation during the second drying period concerning shape and microporosity and can be interpreted in a physical sense. |
| format | Online |
| id | doab-20.500.12854ir-157787 |
| institution | Directory of Open Access Books |
| language | eng |
| publishDate | 2025 |
| publishDateRange | 2025 |
| publishDateSort | 2025 |
| publisher | Logos Verlag Berlin |
| publisherStr | Logos Verlag Berlin |
| record_format | ojs |
| spelling | doab-20.500.12854ir-1577872025-07-29T15:48:18Z Simulation of Spray Polymerisation and Structure Generation in Spray Drying by Single Droplet Models Säckel, Winfried Technology & Engineering Chemical & Biochemical Technology & Engineering bic Book Industry Communication::T Technology, engineering, agriculture::TD Industrial chemistry & manufacturing technologies::TDC Industrial chemistry bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues Spray polymerisation has a long time been discussed as a promising process, yet, with little knowledge on cause-and-effect relationships between drying and chemical reactions. This work develops a new single droplet model of combined solution drying and free radical homopolymerisation, based on the method of moments. New, consistent approaches for moments’ diffusion and the reaction-diffusion system are derived to ensure conservation. Simulations reveal peculiarities of the process such as that, due to drying, polymerisation happens mostly in bulk and monomer evaporation leads to a poor yield. Various process variants and simulation models are discussed. The impact of process parameters is examined by means of numerical DoEs. The second part presents a novel approach for the simulation of structure evolution in suspension drying. The meshfree SPH method is used to model the relevant physical effects on a detailed scale during the first and second drying period. New implementations of physical effects are derived: heat and mass transfer based on linear driving forces, an implicit solution of the heat equation, several approaches for crust formation and a new formulation of surface tension by pairwise forces. The formation of dense structures as well as hollow granules can be simulated. Model parameters influence crust formation during the second drying period concerning shape and microporosity and can be interpreted in a physical sense. 2025-03-26T11:22:29Z 2025-03-26T11:22:29Z 2025-03-24T05:31:38Z 2022 book https://library.oapen.org/handle/20.500.12657/100245 https://directory.doabooks.org/handle/20.500.12854/157787 eng open access image/jpeg image/jpeg n/a n/a https://library.oapen.org/bitstream/20.500.12657/100245/1/external_content.pdf https://library.oapen.org/bitstream/20.500.12657/100245/1/external_content.pdf Logos Verlag Berlin Logos Verlag Berlin 04b263a1-7fba-4491-9eae-1c394ac42fc3 Knowledge Unlatched Knowledge Unlatched (KU) KU Open Services Logos Verlag Berlin open access |
| spellingShingle | Technology & Engineering Chemical & Biochemical Technology & Engineering bic Book Industry Communication::T Technology, engineering, agriculture::TD Industrial chemistry & manufacturing technologies::TDC Industrial chemistry bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues Säckel, Winfried Simulation of Spray Polymerisation and Structure Generation in Spray Drying by Single Droplet Models |
| title | Simulation of Spray Polymerisation and Structure Generation in Spray Drying by Single Droplet Models |
| title_full | Simulation of Spray Polymerisation and Structure Generation in Spray Drying by Single Droplet Models |
| title_fullStr | Simulation of Spray Polymerisation and Structure Generation in Spray Drying by Single Droplet Models |
| title_full_unstemmed | Simulation of Spray Polymerisation and Structure Generation in Spray Drying by Single Droplet Models |
| title_short | Simulation of Spray Polymerisation and Structure Generation in Spray Drying by Single Droplet Models |
| title_sort | simulation of spray polymerisation and structure generation in spray drying by single droplet models |
| topic | Technology & Engineering Chemical & Biochemical Technology & Engineering bic Book Industry Communication::T Technology, engineering, agriculture::TD Industrial chemistry & manufacturing technologies::TDC Industrial chemistry bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues |
| topic_facet | Technology & Engineering Chemical & Biochemical Technology & Engineering bic Book Industry Communication::T Technology, engineering, agriculture::TD Industrial chemistry & manufacturing technologies::TDC Industrial chemistry bic Book Industry Communication::T Technology, engineering, agriculture::TB Technology: general issues |
| url | https://library.oapen.org/handle/20.500.12657/100245 |
| work_keys_str_mv | AT sackelwinfried simulationofspraypolymerisationandstructuregenerationinspraydryingbysingledropletmodels |