scholarly journals Present and Future Development of Flue Gas Control Technology of DeNO_X in the World

2012 ◽  
Vol 17 ◽  
pp. 397-403 ◽  
Author(s):  
Lifang Guo ◽  
Youju Shu ◽  
Junmin Gao
Author(s):  
Craig Kedrowski ◽  
Donald Hug ◽  
Reudi Frey ◽  
Adrian Kaspar

As Energy-from-Waste (EfW) facilities make the leap into the twenty-first (21st) century, so does the demand for cost efficient air pollution control technology. In an effort to meet this rising demand, companies have to develop concepts that remove acid gases in an efficient, sustainable, and reliable way. The current market trend to provide the best available control technology (BACT) leads people searching for technologies that are: • Proven and have extensive records of success. • Highly efficient, resulting in low emission to the atmosphere, but requiring minimal investment. • Compact in design, simple, and low maintenance. • Offering high availability, low reagent consumption, and low residue levels. • Resulting in either clean or suppressed liquid effluents. This paper will specifically discuss the three main types of acid gas control technologies available in today’s marketplace, which include dry, semi-dry, and wet scrubbers. It will first focus on the acid gas control technology most commonly used in the US, the spray dryer absorber, followed by a typical Ring Jet® wet scrubber with packed bed, and finally, the Turbosorp® system. For each of the above technologies, this paper will present the concepts, advantages and disadvantages, achievable emissions, and capital and operating costs. It will then look at how each of these technologies is utilized at existing EfW facilities operating throughout the world and provide information on how each facility has been operating. Lastly, it will look towards the future of acid gas control technologies and provide insight into what advances are being made to meet the most stringent air emission regulation all over the world.


2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Tiancheng Xu ◽  
Youbing Xia

Acupuncture is gaining increasing attention and recognition all over the world. However, a lot of physical labor is paid by acupuncturists. It is natural to resort to a robot which can improve the accuracy as well as the efficacy of therapy. Several teams have separately developed real acupuncture robots or related technologies and even went to the stage of clinical trial and then achieved success commercially. A completed clinical practical acupuncture robot is not far from reach with the combination of existing mature medical robotic technologies. A hand-eye-brain coordination framework is proposed in this review to integrate the potential utilizing technologies including force feedback, binocular vision, and automatic prescription. We should take acupuncture prescription with artificial intelligence and future development trends into account and make a feasible choice in development of modern acupuncture.


Author(s):  
James Li

The concept of Safety Integrity Level (SIL) has been developed within different systems of standards (IEC 61508, EN50129 and DEF-STAN 00-56). These standards are applied in different areas: control technology (IEC 61508), railway technology (EN50128 and EN 50129), and defense technology (DEF-STAN-00-56). Nowadays, a lot of the mass transit turnkey projects around the world demand the contractors to follow CENELEC standards and SIL concept for the safety function implementation. Although the concept of SIL is mentioned in these standards, the interpretation of the concept of SIL in these standards is not consistent and unequivocal. This paper is written to elaborate the anomalies of SIL interpretation among these various standards in order for safety engineers to obtain a more detailed view on the concept of SIL over these standards.


2021 ◽  
Vol 129 ◽  
pp. 01030
Author(s):  
Ladislav Vagner

Research background: The disease, which broke out in December 2019 in the Chinese city of Wuhan and caused a pandemic around the world, has a constant impact on the economies of the countries even after almost two years. The issue of the effect of COVID-19 on the global economy and overall earnings management persists. Due to the topicality of the problem, we focused on the impacts and measures affecting the company’s operation. Purpose of the article: The purpose of this research article is to summarize current information on coronavirus and its effects almost two years after the outbreak. Additionally, outline three different scenarios that could occur. We also took into consideration scientific sources that deal with the shock of COVID-19. In addition, we summarize the opinions of scientific authors. Methods: Within the methodology, we used mainly the analysis and obtaining an objective picture of the current situation in the world. Following the outbreak of the pandemic, there have been significant inconstancies in GDP. Subsequently, we focus on the development of individual selected macro indicators that best describe the global economy. Findings & Value added: Finally, we offer three scenarios that outline three different situations that may occur, which we worked on based on a scenario analysis based on a modification of the sensitivity analysis, to specify future development scenarios based on macroeconomic indicators.


Author(s):  
Lichtenstein Natalie

Chapter 10, Reflections, draws on the histories of AIIB’s predecessors to single out themes that may prove relevant for AIIB’s future development. Examples are taken from the stories of the World Bank, and the Inter-American Development Bank (IADB), the Asian Development Bank (AsDB), the African Development Bank (AfDB) and the European Bank for Reconstruction and Development (EBRD). Principal themes are: economic and financial environment; international relations and politics; funding; membership changes; major shareholders; clients and operations; leadership and governance; and attitudes toward change. While AIIB has been established in a world far different from the second half of the twentieth century that saw the birth of its predecessors, many of these aspects of the development of these multilateral development banks may prove similarly influential as AIIB’s future unfolds.


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