EPA-100-1605-02-03

100

5,980 千元

2011/07/21

2011/12/23

錢建嵩

環檢所

劉廣尉

中原大學

環境監測及檢測

生質物;稻稈;焙燒;先導設施;前處理

Biomass;Rice Straw;Torrefaction;Pilot Plant;Pre-treatment

許克瀛

錢建嵩

03-2654120#

cschyang@cycu.edu.tw

本計畫目標係協助環保署環境檢驗所建置國內生質料源分布地圖、開發中小型生質物造粒設備、進行生質物焙燒製程生命週期評估，評估國內生質能源應用之可行性，除減少廢棄物處理、處置問題，亦可提供生質燃料，替代化石燃料使用，減緩二氧化碳排放。另外，蒐集及評估廢棄物高速堆肥技術之可行性，提供環保署參考。依據契約本計畫期末報告完成工作包括：(1)完成國內生質料源分布地圖建置，包括：一般廢棄物(都市垃圾)、一般事業廢棄物、農產剩餘資材、林產剩餘資材等生質料源。完成估算生質能源潛勢共計45,445.8 TJ/Y。(2)完成中小型焙燒料源前處理造粒設備細部設計及系統建置，包括破碎單元、袋濾機單元、造粒單元及運輸等單元。完成稻稈及木屑造粒測試，經分析結果其耗電量分別為 177.6 kWh/公噸-顆粒燃料及261.1 kWh/公噸-顆粒燃料。另，完成稻稈及柳杉木二種生質物造粒前、後生質物特性分析，包括體密度、含水率及熱值等，造粒前後體密度提昇最為顯著分別提升為原物料之19.8倍及3.2倍，有助於降低生質燃料運輸成本。(3)完成二個方案生質物焙燒製程生命週期評估分析，方案一為使用天然氣做為焙燒製程熱源，其能源投入產出為2.99，且每公噸生質煤具1,234.37 kg-CO2-eq/ton-生質煤之淨二氧化碳減量效益；方案二為使用稻稈顆粒燃料作為焙燒熱源，其能源投入產出為4.72，且每公噸生質煤具1,385.25 kg-CO2-eq/ton-生質煤之淨二氧化碳減量效益，皆顯示生質煤對於二氧化碳減量具有正面的效益(4)完成廢棄物高速堆肥技術資料搜集及分析，顯示本技術具快速且可將廢棄物資源化之優點。

生質物;稻稈;焙燒;先導設施;前處理

EPA-100-1605-02-03.pdf

17MB

2012/2/1 上午 12:00:00

The main objective of this project is to assist EPA to set up bioresource map for bioenergy, to build a mobile pelletizing pilot facility, to evaluate LCA of biomass torrefaction processes, and to evaluate feasibilities of bioenergy application in Taiwan. The waste-to-energy technology could not only solve problems of waste treatment and disposal but also produce bio-fuel which can reduce CO2 emission by the replacement of fossil fuel.. The information for the high-rate thermochemical fertilizer-making technology is also gathered and analyzed for EPA’s reference. In the final report, four main compelted works were described as following：(1) bioresource database and bioresource map have been completed. The amounts of municipal wastes, general industrial wastes, agriculture residues and forest residues were analyzed in this report. The bioenergy potential in Taiwan was estimated about 45,445.8 TJ/Y (2)the detailed design of mobile pelletizing pilot facility which includes shredding unit, pelletizing unit, bag house and transportation unit have been completed. Additionally, the rice straw and sawdust pelletizing tests have been completed. The energy consumption of two pelletized material was 177.6 kWh/ton-pellet and 261.1 kWh/ton-pellet, respectively. The characteristics of raw and pelletized rice straw and sawdust material were also analyzed such as the bulk density, the water content and the lower heating value. These results showed that the biomass pelletizing process could reduce the transportation cost of biofuels due to the bulk density of pelletized rice straw and sawdust material increases about 20 times and 3.2 times higher than the raw materials, respectively.(3)the two biomass torrefaction process scenarios for the LCA were evaluated. The first scenario suggests using natural gas for providing torrefaction heat demand. The results showed that the energy output-input ratio is about 2.99 and the net CO2 emission reduction is about 1,234.37 kg-CO2-eq/ton-biocoal. The other scenario suggests using rice pellet for providing torreaction heat demand. The results showed that the energy output-input ratio is about 4.72 and the net CO2 emission reduction is about 1,385.25 kg-CO2-eq/ton-biocoal. Therefore, both two scenarios of bio-coal are beneficial to the environment (4)the information for the high-rate thermochemical fertilizer-making technology was gathered and analyzed. It suggests that this technology has the advantages of the fast reaction rate and the efficient conversion from the bio-waste to the usable fertilizer.

Biomass;Rice Straw;Torrefaction;Pilot Plant;Pre-treatment