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Physical activation of oil-sands fluid coke, a dense carbonaceous material, using sulfur dioxide (SO2) was investigated as a means of utilizing a plentiful and inexpensive waste for elemental mercury (Hg) removal. A new model was developed to elucidate physical activation of dense carbonaceous materials. Experiments and model simulations revealed that, during activation with SO2, a sulfur-rich porous layer is formed around the periphery of the coke particles; this porous layer reaches a maximum thickness as a result of diffusion limitations; the maximum porous layer thickness is controlled by activation conditions and determines the maximum achievable specific surface area (SSA). Pre-oxidation in air prior to activation, acid washing after activation and smaller coke particle size all result in higher SSA. The highest SSA achieved was 530 m2/g, the highest yet found for oil-sands fluid coke with physical activation. If present, oxygen out-competed SO2 for carbon during activation. SO2 activation and porous layer formation did not occur until oxygen was depleted. Sulfur added to coke through SO2 activation is mainly in reduced forms which are more thermally stable than elemental sulfur in commercial sulfur-impregnated activated carbons (SIACs). TGA and elemental analyses revealed that only 17% of sulfur was removed at 800°C from SO2-activated coke under inert conditions, compared with 100% from a commercial SIAC. The role of sulfuric acid (H2SO4) in vapor Hg capture by activated carbon (AC) was studied due to conflicting findings in the recent literature. In the absence of other oxidizing species, it was found that Hg could be oxidized by oxygen which enhanced vapor Hg adsorption by AC and Hg absorption in H2SO4 solution at room and elevated temperatures. At 200°C, AC treated with 20% H2SO4 reached a Hg loading of more than 500 mg/g, which is among the highest Hg capacities yet reported. When oxygen was not present, S6+ in H2SO4 was found to act as an oxidizer of Hg, thus enabling Hg uptake by H2SO4-treated AC at 200°C. Treating the AC with SO2 at 700°C improved the initial rate of Hg uptake, with and without subsequent H2SO4 treatment.

Physical activation of oil-sands fluid coke, a dense carbonaceous material, using sulfur dioxide (SO2) was investigated as a means of utilizing a plentiful and inexpensive waste for elemental mercury (Hg) removal. A new model was developed to elucidate physical activation of dense carbonaceous materials. Experiments and model simulations revealed that, during activation with SO2, a sulfur-rich porous layer is formed around the periphery of the coke particles; this porous layer reaches a maximum thickness as a result of diffusion limitations; the maximum porous layer thickness is controlled by activation conditions and determines the maximum achievable specific surface area (SSA). Pre-oxidation in air prior to activation, acid washing after activation and smaller coke particle size all result in higher SSA. The highest SSA achieved was 530 m2/g, the highest yet found for oil-sands fluid coke with physical activation. If present, oxygen out-competed SO2 for carbon during activation. SO2 activation and porous layer formation did not occur until oxygen was depleted. Sulfur added to coke through SO2 activation is mainly in reduced forms which are more thermally stable than elemental sulfur in commercial sulfur-impregnated activated carbons (SIACs). TGA and elemental analyses revealed that only 17% of sulfur was removed at 800°C from SO2-activated coke under inert conditions, compared with 100% from a commercial SIAC. The role of sulfuric acid (H2SO4) in vapor Hg capture by activated carbon (AC) was studied due to conflicting findings in the recent literature. In the absence of other oxidizing species, it was found that Hg could be oxidized by oxygen which enhanced vapor Hg adsorption by AC and Hg absorption in H2SO4 solution at room and elevated temperatures. At 200°C, AC treated with 20% H2SO4 reached a Hg loading of more than 500 mg/g, which is among the highest Hg capacities yet reported. When oxygen was not present, S6+ in H2SO4 was found to act as an oxidizer of Hg, thus enabling Hg uptake by H2SO4-treated AC at 200°C. Treating the AC with SO2 at 700°C improved the initial rate of Hg uptake, with and without subsequent H2SO4 treatment.

本研究以A公司做為研究對象，探討PCB曝光設備廠商的經營策略、精實生產、企業價值管理等相關性議題。 A公司成立初期，研發半自動CCD對位UV燈泡型曝光機，以價格約歐日曝光機的1/3，曝光品質又不低於歐日產品，成功滲透台灣PCB產業，贏得大中廠客戶的好評與信心。17年期間，累計裝機台數已經超出3000台，產品遍佈於台灣、中國、泰國的主要PCB生產廠商，台、中、泰裝機比重約15%、70%、15%。 綜觀3C產品、物聯網設備、穿戴式電子產品、虛擬實境(virtual reality,VR)、無人機、汽車自動駕駛等電子產品，對PCB印刷電路板有三項重要發展趨勢，其一為Any-Layer HDI需求增加；其二為PCB板的線/線距愈趨微細小化，其程度已由50um提升至35um甚至到25um以下。其三為「水俁汞限制公約」於2020年開始實施，將全面禁用含汞之設施。 因此，對於PCB曝光設備廠商A公司而言，也面臨以下三大挑戰。其一為創新研發技術，開發高精密、高產出的DI直接成像曝光設備，並於IC產業贏得市佔率。其二為開發 UV LED 燈源型傳統曝光機，以因應2020年「水俁汞防制公約」的實施及綠能化產品之趨勢。其三為2017年如何調整經營策略突破困境，持續成長，獲取超額利潤，提升企業價值。 本研究擬透過個案研究方法，進行研究訪談，收集初級及次級資料，透過TOWS分析、五力分析、BMC九宮格圖、精實生產、企業價值管理等分析，最後總結經營策略、精實生產、企業價值三者間的相關性，彙整PCB曝光設備產業的關鍵成功因素、中長期的策略方針，做為本研究之結論與建議，提供台灣PCB曝光設備廠商的未來發展之參考。 / This research mainly take Company A as the research object to discuss the business strategy, lean production, enterprise value management and other related issues of PCB Exposure Equipment Manufacturers.At first, Company A was setup for Semi-automatic CCD alignment UV lamp-type exposure machine research and development. With the same or higher quality compared to the European and Japanese products but about 1/3 of the retail price, company A successfully penetrate Taiwan's PCB industry, winning praise and confidence from lots of customers. During the 17-year period, the cumulative total number installed has surpassed 3,000 units. Its products are located in major PCB manufacturers in Taiwan, China and Thailand. The proportion between Taiwan, China and Thailand is 15%, 70% and 15% respectively. Comprehensively looking into the evolution of the electronics industry, there are three important trends for PCB printed circuit boards of electronics products, including 3C products, IoT devices, wearable electronics, virtual reality, drones and autopilot. One is the increasing demand of Any-Layer HDI, the other is the PCB board line / line spacing requirements becoming increasingly smaller and smaller, and has to be improved from 50um to 35um or even less than 25um . Third, the launch of Minamata Convention on Mercury in 2020 will completely ban the use of mercury-containing cosmetics, coal-fired power generation and lighting fixtures. AsFor factors mentioned above, company A faces the following three challenges. One is to reserch and develop innovative technologies to produce high-precision DI direct imaging exposure equipment and gain market share in the IC industry. The other is the development of a full range of traditional UV LED exposure machines to meet the 2020 "Mercury Control Convention" implementation. Third, how to adjust business strategy in 2017 to breakthrough difficulties, sustained growth, excess profit, and enterprise value to defeat the slowdown or decline of the performance growth rate over the past five years. This study intends to conduct research interviews and collect primary and secondary materials from company A, using "Case Study Method", with the analysis of “TOWS”, "Five Forces Analysis", "Business Model Canvas", "Lean Production" and "Enterprise Value Management".Finally, "key success factors" and "medium and long-term strategic directions" were compiled for this research and providing a reference for the future development of Taiwan PCB exposure equipment manufacturers.