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Wulyapash Wittawat Phongphiphat Awassada Towprayoon Sirintornthep 《Clean Technologies and Environmental Policy》2022,24(1):423-436
Clean Technologies and Environmental Policy - The seafood processing industries produce large amounts of wastewater sludge in Thailand. Most of sludge is dewatered and then sent directly to... 相似文献
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Awassada Phongphiphat Changkook Ryu Yao Bin Yang Karen N. Finney Adrian Leyland Vida N. Sharifi Jim Swithenbank 《Corrosion Science》2010,52(12):3861-3874
High-temperature corrosion in the superheater of a large-scale waste-to-energy plant was investigated. A comparison of nickel-/iron-based alloys and austenitic stainless steel probes placed in the furnace demonstrated that temperature and particle deposition greatly influence corrosion. Nickel-based alloys performed better than the other metal alloys, though an aluminide coating further increased their corrosion resistance. Sacrificial baffles provided additional room for deposit accumulation, resulting in vigorous deposit-induced corrosion. Computational modelling (FLUENT code) was used to simulate flow characteristics and heat transfer. This study has shown that the use of aluminide coatings is a promising technique for minimising superheater corrosion in such facilities. 相似文献
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Phongphiphat A Ryu C Finney KN Sharifi VN Swithenbank J 《Journal of hazardous materials》2011,186(1):218-226
The deposition of ash - combustion residues - on superheaters and heat exchanger surfaces reduce their efficiency; this phenomenon was investigated for a large-scale waste-to-energy incineration facility. Over a period of six months, ash samples were collected from the plant, which included the bottom ash and deposits from the superheater, as well as flyash from the convective heat exchanger, the economiser and fabric filters. These were analysed for particle size, unburned carbon, elemental composition and surface morphology. Element partitioning was evident in the different combustion residues, as volatile metals, such as cadmium, antimony and arsenic, were found to be depleted in the bottom ash by the high combustion temperatures (1000+°C) and concentrated/enriched in the fabric filter ash (transferred by evaporation). Non-volatile elements by contrast were distributed equally in all locations (transported by particle entrainment). The heat exchanger deposits and fabric filter ash had elevated levels of alkali metals. 82% of flyash particles from the fabric filter were in the submicron range. 相似文献
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