According to the 5th General Assessment Report (2014) of the Intergovernmental Panel on Climate Change (IPCC), the level of recently discharged man-made greenhouse gas (GHG) was the highest ever since the observation began, clearly indicating that people have clear impact on the climate system.
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According to the 5th General Assessment Report (2014) of the Intergovernmental Panel on Climate Change (IPCC), the level of recently discharged man-made greenhouse gas (GHG) was the highest ever since the observation began, clearly indicating that people have clear impact on the climate system.
To this end, it is necessary to develop, distribute, and spread new renewable energy to replace fossil fuel, the major emission source of GHG and achieve the goal of supplying new renewable energy domestically up to 11% as of 2030.
Despite various efforts by the government, however, using such energy sources is not easy due to the intensification of environmental laws and the opposition of local residents.
Under the circumstance, the number of thermal power plants that generate electricity by incinerating wood pellets and coal together, causing continuous increase of the use of wood pellet and tremendous economic loss as most of them are imported from overseas.
For this, it is necessary to develop a fuel that can replace the new renewable energy used in power plants, secure stable production and economic efficiency, and can be readily supplied domestically.
This study intended to develop high-quality biomass fuel by using domestic biomass wastes to reduce GHG. Detailed goals include the development of technologies for removing impurities, foul odor, and moisture in an economic way and for molding pellets, the verification of the properties of biomass raw materials product candidates and the biomass quality, and the review on the development and commercialization of economic biomass fuel that satisfies GR standards or Biomass-Solid Refuse Fuel (Bio-SRF) standards.
This study applied a six-stage research method to achieve the goals. The first stage was the preliminary property survey of the bio waste generation process, components, and calories. The second stage reviewed the ways to secure bio waste raw materials, such as paper and coffee sludge.
The third stage was the development of impurities, foul odor, and moisture removing process and the fourth stage was the production of waste resource biomass fuel product and property analysis.
Fifth stage analyzed the combustion properties of the developed product and its contaminant emission characteristics, and finally, reviewed the commercialization feasibility by comparing the product developed with existing products and foreign products in terms of specification, performance, and characteristics for the commercialization of the final product.
The final Bio-SRF mix ratio and molding conditions were derived based on the higher heating value, lower heating value, and ash content per mix ratio by using the result of the SRF test on waste biomass nine samples using nine samples and the methods described above and using the recipe design program.
For molding, four cases of final molding tests were performed, all molded Bio-SRF cases satisfied quality standards and other standards in the general property tests.
Also, a combustion simulation was performed by using technical analysis, elemental analysis, and dried higher heating value analysis results by case to estimate the combustion efficiency and contaminant emission characteristics of the fuel mixed with bituminous coal. The result was not significantly different from the combustion of unmixed bituminous coal.
The combustion experiment, which used the mixed fuel of bituminous coal and the biomass produced (5%), also satisfied all 24 items of the air pollutant emission standards.
Therefore it is presumed that the mixed fuel of bituminous coal and biomass can be commercialized as it is deemed appropriate in terms of quality, environmental impact, and economic efficiency.
According to the 5th General Assessment Report (2014) of the Intergovernmental Panel on Climate Change (IPCC), the level of recently discharged man-made greenhouse gas (GHG) was the highest ever since the observation began, clearly indicating that people have clear impact on the climate system.
To this end, it is necessary to develop, distribute, and spread new renewable energy to replace fossil fuel, the major emission source of GHG and achieve the goal of supplying new renewable energy domestically up to 11% as of 2030.
Despite various efforts by the government, however, using such energy sources is not easy due to the intensification of environmental laws and the opposition of local residents.
Under the circumstance, the number of thermal power plants that generate electricity by incinerating wood pellets and coal together, causing continuous increase of the use of wood pellet and tremendous economic loss as most of them are imported from overseas.
For this, it is necessary to develop a fuel that can replace the new renewable energy used in power plants, secure stable production and economic efficiency, and can be readily supplied domestically.
This study intended to develop high-quality biomass fuel by using domestic biomass wastes to reduce GHG. Detailed goals include the development of technologies for removing impurities, foul odor, and moisture in an economic way and for molding pellets, the verification of the properties of biomass raw materials product candidates and the biomass quality, and the review on the development and commercialization of economic biomass fuel that satisfies GR standards or Biomass-Solid Refuse Fuel (Bio-SRF) standards.
This study applied a six-stage research method to achieve the goals. The first stage was the preliminary property survey of the bio waste generation process, components, and calories. The second stage reviewed the ways to secure bio waste raw materials, such as paper and coffee sludge.
The third stage was the development of impurities, foul odor, and moisture removing process and the fourth stage was the production of waste resource biomass fuel product and property analysis.
Fifth stage analyzed the combustion properties of the developed product and its contaminant emission characteristics, and finally, reviewed the commercialization feasibility by comparing the product developed with existing products and foreign products in terms of specification, performance, and characteristics for the commercialization of the final product.
The final Bio-SRF mix ratio and molding conditions were derived based on the higher heating value, lower heating value, and ash content per mix ratio by using the result of the SRF test on waste biomass nine samples using nine samples and the methods described above and using the recipe design program.
For molding, four cases of final molding tests were performed, all molded Bio-SRF cases satisfied quality standards and other standards in the general property tests.
Also, a combustion simulation was performed by using technical analysis, elemental analysis, and dried higher heating value analysis results by case to estimate the combustion efficiency and contaminant emission characteristics of the fuel mixed with bituminous coal. The result was not significantly different from the combustion of unmixed bituminous coal.
The combustion experiment, which used the mixed fuel of bituminous coal and the biomass produced (5%), also satisfied all 24 items of the air pollutant emission standards.
Therefore it is presumed that the mixed fuel of bituminous coal and biomass can be commercialized as it is deemed appropriate in terms of quality, environmental impact, and economic efficiency.
주제어
#Bio-SRF paper sludge coffee sludge molding combustion
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