| Operation Report of Pyrolysis Gas Melting System |
Yoshihisa KAWAI*
(*Environmental Engineering Dept.Ⅰ) |
(Abstract)
By operating the Environmental Resources Gallery of the Sanitation Control
Association of Kakegawa and Kikugawa cities, the following observations have
been made. This is the fourth pyrolysis gas melting facility we have built, and
was completed in 2005.
1. A stable and continuous operation has been maintained despite large
fluctuations in the heat value and the
amount of the waste input.
2. Autothermic melting has been achieved.
3.Special attention has been paid to assure longevity of the refractory material
of the
high-temperature-combustion melting furnace.
4.Iron, Aluminum and slag discharged from the facility are being recovered and reused as reliable
resources. |
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| High-voltage Grid Interconnection with Power Generation Facility of Waste Incineration Plants |
Hideo SUGAHARA*, Shin-ichi TSUJIMOTO** and Masakazu KATOH***
(*Takuma Technos Co., Ltd, **Electrical & Instrumentation Dept., ***Tokyo Denki
University) |
(Abstract)
As a means of preventing global warming, the Ministry of the Environment
decided to increase the waste-derived power generation capacity by nearly 50% in
the five years from 2008 to 2012, to approximately 2,500,000 kW. It will be an
increase of 870,000 kW over the estimated 1,630,000kW for the fiscal year 2007.
In addition to building new plants, this may require addition of power-generating capacities to
the existing small and medium incineration plants. Most of these existing plants
are connected with the high-voltage (6kV) grid. The Grid-Interconnection
Guideline for Maintaining Electric Power Quality recommends power-generating
facilities with capacities above 2,000kW to interconnect with the extra-high
voltage (20kV class) grid. This presents a bottleneck to existing small and
medium incineration plants in adding power-generation capacities.
We have designed a power-generation model with a capacity in excess of
2,000kW, and studied the technical factors, and found out that it can be
interconnected to a high-voltage grid without significant problems. This
report describes the results of the study, and the background thoughts of the
guideline. |
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| Operation Report of Industrial-Waste Treatment Facility built for Assist Co., Ltd. |
Hidenobu NAKAGAWA*, Masahiro OKAWA* and Jun ABE*
(*Energy Engineering Dept. Ⅱ) |
(Abstract)
In March 2007 we had received an order from Assist Co., Ltd. to design and
build an industrial-waste treatment facility. It was completed in July 2008.
This facility consists of an incinerator to treat industrial waste generated
within the Nemuro region of Hokkaido, and a calcination plant to process shells
from the scallops harvested nearby. We began test operation of the plant in late
May 2008. The incineration has been carried out smoothly by optimizing the waste
composition ratio, and the calcination plant has reached the required
temperature. The performance test that followed has proven that the facility
meets the guaranteed design specifications. |
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Demonstration Test of Gasification and Methanol Synthesis from Biomass
－Kyoto Biocycle Project－ |
Munechika ITO*, Kazuki HAYASHI*, Kazuhiro SATO**
Hitoshi HARADA** and Hiroki YAMASAKI**
(*Energy & Environmental Development Dept. **Energy & Environmental Research Center) |
(Abstract)
As a part of the Greenhouse Gas Mitigation Technology Development
Program 2007 initiated by the Ministry of the Environment, we began in 2007 a
demonstration test of producing methanol from biomass. This technology gasifies
biomass, and methanol is synthesized from the carbon monoxide and the hydrogen
contained in the product gas. It embodies our own technologies such as
gasification using circulating fluidized bed, high-temperature ceramic gas
filter and tar cracking by means of catalyst, contributing to high gasification
efficiency. Compared with the traditional method that produces methanol from
natural gas, this new technology not only saves energy by synthesizing methanol
at lower temperature and lower pressure, but also improves efficiency by
providing a condensation zone in the methanol reactor that forms a
non-equilibrium reaction field.
Our demonstration test has achieved the carbon conversion rate of 95%
and the cold gas efficiency of 65%, proving high gasification efficiency, while
the methanol output has been steady at 50L / day. |
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| Technology of Using Immunoassay for Screening Soil and Sediments Polluted by Dioxins |
Hiroki FUJIHIRA* and Shigeaki NISHII**
(*Energy & Environmental Research Center,**Tsuruga Bio Research Center, Toyobo
Co., Ltd.) |
(Abstract)
In April 2003 the authors developed a simple method of measuring dioxins
using immunoassay as its measurement principle. In September 2005 this
technology was designated to be the official method as a part of measuring
system of dioxins from the exhaust gas and particulates from waste incinerators.
At the early stage, however, this method used an antibody with very low
reactivity toward PCBs that limited its application to screening soil and
sediments that contain spots of high PCBs concentration.
We proceeded to produce a new antibody against dioxins that reacts very
well not only to PCDD/DFs but also to PCBs. This enabled us to develop a new
immunoassay kit that screens dioxins-contaminated soil and sediments quickly and
cheaply.
In this article, we report the measuring principle and characteristics of the newly developed immunoassay technology. |
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