RISS 검색 - 학위논문 상세보기

다국어 초록 (Multilingual Abstract)

Recently, interest in new renewable energy is increasing worldwide. According to the 5-year document of state administration announced by the new government, the government will nullify the construction of new nuclear power plants and increase the proportion of renewable energy generation to 20% by 2030 from 7% in 2016. The government also announced to increase the mandatory rate of its existing 10% RPS(Renewable Portfolio Standards) to 28% by 2030. With the RPS system implemented in 2012, power generation companies with more than 500MW of power generation facilities are compulsorily required to supply more than a certain amount of electricity produced from new renewable energy sources. Biomass fuel usage has increased sharply as a new renewable energy source since 2013 when it started to be used mainly among the Korean power subsidiaries that weredeveloping coal. As a result, they carried out 5.8% in 2013, 20.9% in 2014 and 18.1% of the total mandatory supply amount of RPS using wood pellets and Bio-SRF.
Wood pellet industry was founded in Korea based on support project for “low-carbon Green Growth” in 2018 and in response to climate change and greenhouse gas by expanding business of new renewable energy development and distribution. Currently, world wood pellet production is 27,963,000 tons/year in 2015, 7.7% more than in 2014, and Korea accounts for 12.8% of the world's imports by importing 1,850,000 tons/year in 2014. However, in the domestic wood pellet market, only few among 23 wood pellet manufacturers operate normally by 2015.
In this study, the amount of unused forest biomass is estimated based on the analysis method and the growth rate of the forest, and 20% of the byproducts generated during the processing of wood that can be used as the raw material of wood pellets. As a result, it is possible to acquire wood pellet raw materials of 4.57 million tons/year in 2016, 5.23 million tons/year in 2020 and 7.06 million tons/year in 2030. It was concluded that the production of wood pellets of 2.74 million tons/year in 2016, 3.14 million tons/year in 2020 and 4.23 million tons/year in 2030 was possible.
Based on the worldwood pellet production estimation, 13 million tons of western Europe, 11 million tons of North America, 10 million tons of China and 4.4 million tons of West America by 2020 is predicted, but the domestic wood pellet industry is expected to maintain import dependency rate of 97.2%: domestic production of 53,000 tons, import of 1.72 million tons among 2016 total usage of 1.77 million tons usage in 2016.
Based on the existing and licensed biomass power plant and wood pellet power plants used for “In case of mixed combustion”, the demand for wood pellets for domestic power generation was estimated to be 3.27 million tons in 2020, 5.44 million tons in 2025and 7.69 million tons in 2030. Assuming that the power generation efficiency of the power plant is 40%, the required amount even increases to be 3.91 million tons in 2020, 6.48 million tons in 2025, and 9.16 million tons in 2030.
As a result of analyzing the effect of production cost and raw material supply distance of wood pellet manufacturing industry, bigger production capacity and with shorter supply distance of raw material, is more competitive. And the proportion of raw materials cost exceeds 60% of the production cost of wood pellet production of 300,000 tons.
Assuming supply of raw materials at an average distance of 100km, the appropriate selling price of wood pellets excluding transportation costs was estimated at 272,528 Won/ton. As a result of comparing the price of wood pellets (305,000 Won/ton) sold domestically and industrially in major European countries with domestic prices in Korea, if facilities with production cost more than 300,000 ton/year improve the raw material cost and maintain stable supply of raw materials which accounts for more than 60%, it is possible to compete with foreign wood pellet manufacturers.

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