- 學位論文
生物質轉化設備OPLC監控系統建置及應用之研究
The Construction and Application Study of OPLC Supervisory Control System for Biomass Conversion Equipment
摘要
利用木質纖維素原料作為生產第二代生物質酒精汽油燃料的過程中其主要是分為蒸爆處理、糖化、分離純化及發酵等程序，其蒸爆處理及分離純化是生物質轉化利用的兩項關鍵技術。加入電控、儀控及監控模式，開發高效率及更便捷的蒸爆處理及分離純化機電工程技術是生產纖維酒精汽油燃料的主要關鍵。 本研究是為配合蒸爆處理及分離純化系統之操控運作需求，分別規劃、設計及建置其電控、儀控及OPLC監控之硬體設備及系統軟體控制策略。以採用狼尾草渣為原料，以經由蒸爆處理後產出具有低聚木糖成份的混合液為研究對象，以分離純化設備產出無發酵抑制物的低聚木糖混合液成品為主要目標。利用過濾膜工程技術的方式，將蒸爆液中的發酵抑制物分離出，以取得純化後的低聚木糖混合液作為生技及生醫的原材料應用。 本研究為探討蒸爆處理及分離純化系統的操作相關參數條件的精確性及關聯性，以實務面考量之軟硬體規劃設計，藉由OPLC監控人機介面操作方式的研究，由可程式控制器和人機介面整合在單一OPLC硬體單元內，以即時擷取系統運轉中各項重要控制參數與相關數據，為將來建置高性能OPLC監控系統的蒸爆處理及膜分離純化及濃縮系統之量產設備做準備。
並列摘要
The process of using lignocelluloses to produce the second–generation biomass ethanol fuel comprises steam explosion, saccharification, separation and purification, and fermentation. Steam explosion and separation and purification are key technologies for converting and using biomass. To produce cellulosic ethanol fuel, it is critical to develop efficient, convenient steam explosion and separation and purification technologies that include electrical, instrument, and supervisory control modes. Based on the requirements for operating steam explosion and separation and purification systems, the researcher planned, designed, and constructed the hardware for an electrical, instrument, and operator panel logic controller (OPLC) supervisory control system, and system-software control strategies. The research involved a mixture that contained xylooligosaccharides, which were produced by treating Napier grass using steam explosion. The objective of this study was to produce a xylooligosaccharide mixture that contained no fermentation inhibitor by using separation and purification equipment. A membrane filtration technology was used to separate the fermentation inhibitors from the steam explosion liquor, yielding a purified xylooligosaccharide mixture that can be used in biotechnological and biomedical applications. The accuracy and relevance of parametric conditions for steam explosion and separation and purification systems were explored from the perspective of practical hardware and software planning and design. A programmable controller and human machine interface apparatus were integrated in a single OPLC hardware unit to instantly acquire the critical control parameters and relevant data during system operation; the system facilitates the steam explosion and membrane separation and purification treatments of the constructed high-performance OPLC supervisory control system, and contributes to the mass production equipment of concentration systems.