排序方式: 共有4条查询结果,搜索用时 93 毫秒
1
1.
Ueda Hiroyuki Moriyama Akihiro Iwahashi Hitoshi Moritomi Hiroshi 《Journal of Material Cycles and Waste Management》2021,23(2):505-515
Journal of Material Cycles and Waste Management - Carbon fiber-reinforced plastics (CFRP) are used for structural materials in the aircraft and automotive industries due to their lightweight and... 相似文献
2.
Niksa S Fujiwara N Fujita Y Tomura K Moritomi H Tuji T Takasu S 《Journal of the Air & Waste Management Association (1995)》2002,52(8):894-901
This paper evaluates an elementary reaction mechanism for Hg0 oxidation in coal-derived exhausts consisting of a previously formulated homogeneous mechanism with 102 steps and a new three-step heterogeneous mechanism for unburned carbon (UBC) particles. Model predictions were evaluated with the extents of Hg oxidation monitored in the exhausts from a pilot-scale coal flame fired with five different coals. Exhaust conditions in the tests were very similar to those in full-scale systems. The predictions were quantitatively consistent with the reported coal-quality impacts over the full range of residence times. The role of Cl atoms in the homogeneous mechanism is hereby supplanted with carbon sites that have been chlorinated by HCl. The large storage capacity of carbon for Cl provided a source of Cl for Hg oxidation over a broad temperature range, so initiation was not problematic. Super-equilibrium levels of Cl atoms were not required, so Hg was predicted to oxidize in systems with realistic quench rates. Whereas many fundamental aspects of the heterogeneous chemistry remain uncertain, the information needed to characterize Hg oxidation in coal-derived exhausts is now evident: complete gas compositions (CO, hydrocarbons, H2O, O2 NOx, SOx), UBC properties (size, total surface area), and the ash partitioning throughout the exhaust system are required. 相似文献
3.
Ueda Hiroyuki Fukuta Rino Ohno Tomoki Moriyama Akihiro Himaki Takehiro Iwahashi Hitoshi Moritomi Hiroshi 《Journal of Material Cycles and Waste Management》2021,23(3):1071-1080
Journal of Material Cycles and Waste Management - Carbon-fiber-reinforced plastics (CFRPs) are used as structural materials in the aircraft and automotive industries owing to their lightweight and... 相似文献
4.
Hayato Hattori Ryo Yoshiie Hiroshi Moritomi 《Journal of Material Cycles and Waste Management》2009,11(3):284-292
In Japan, incineration ash is subjected to a melting process to reduce waste volume and to stabilize hazardous heavy metals.
In previous articles, we reported that large quantities of volatile metals are emitted under ash-melting conditions at temperatures
higher than 1200°C and that such emissions are considerably increased under reducing conditions. However, the emission behavior
in the presence of large amounts of char particles was unclear, and we suspected that emissions under these conditions might
differ from emissions under the previous conditions. Therefore, we investigated heavy metal emissions and the melting characteristics
of ash in the presence of carbon particles. In this experiment, a small crucible with ash and carbon was rapidly heated using
a high-frequency induction-heating furnace to simulate the melting ash gasification with carbon. As a result, it was found
that additive carbon can promote emissions of heavy metals such as zinc and lead and control the melt of the ash. 相似文献
1