The Experts below are selected from a list of 2120001 Experts worldwide ranked by ideXlab platform
Seungsoo Kim - One of the best experts on this subject based on the ideXlab platform.
-
influence of operation variables on fast pyrolysis of miscanthus sinensis var purpurascens
Bioresource Technology, 2010Co-Authors: Hyeon Su Heo, Hyun Ju Park, Jinheong Yim, Seungsoo Kim, Jung Mi Soh, Junhong Park, Jongki Jeo, Changkook Ryu, Youngkwo ParkAbstract:Abstract Fast pyrolysis of Miscanthus was investigated in a bench-scale fluidized bed reactor for production of Bio-Oil. Process conditions were varied for temperature (350–550 °C), particle size (0.3–1.3 mm), feed rate and gas flow rate. Pyrolysis temperature was the most influential parameter upon the yield and properties of Bio-Oil. The highest Bio-Oil yield of 69.2 wt.% was observed at a temperature of 450 °C which corresponded to the end of the thermal composition of hemicellulose and cellulose. In the Bio-Oil, the water content was 34.5 wt.%, and the main compounds in the organic fraction were phenolics and oxygenates. With increasing temperature, the amount of oxygenates in the Bio-Oil decreased gradually while that of water and aromatics increased rapidly. The Bio-Oil yield was not significantly affected by particle sizes or feed rates. The use of product gases as a fluidizing medium aided in increasing Bio-Oil yield.
-
clean bio oil production from fast pyrolysis of sewage sludge effects of reaction conditions and metal oxide catalysts
Bioresource Technology, 2010Co-Authors: Hyun Ju Park, Hyeon Su Heo, Youngkwo Park, Jinheong Yim, Junhong Park, Jongki Jeo, Changkook Ryu, Seungsoo KimAbstract:Abstract Fast pyrolysis of sewage sludge was carried out under different reaction conditions, and its effects on Bio-Oil characteristics were studied. The effect of metal oxide catalysts on the removal of chlorine in the Bio-Oil was also investigated for four types of catalysts. The optimal pyrolysis temperature for Bio-Oil production was found to be 450 °C, while much smaller and larger feed sizes adversely influenced production. Higher flow and feeding rates were more effective but did not greatly affect Bio-Oil yields. The use of the product gas as the fluidizing medium gave an increased Bio-Oil yield. Metal oxide catalysts (CaO and La 2 O 3 ) contributed to a slight decrease in Bio-Oil yield and an increase in water content but were significantly effective in removal of chlorine from the Bio-Oil. The fixed catalyst bed system exhibited a higher removal rate than when metal oxide-supported alumina was used as the fluidized bed material.
-
Clean Bio-Oil production from fast pyrolysis of sewage sludge: effects of reaction conditions and metal oxide catalysts.
Bioresource technology, 2009Co-Authors: Hyun Ju Park, Hyeon Su Heo, Jinheong Yim, Junhong Park, Changkook Ryu, Young-kwon Park, Jong-ki Jeon, Seungsoo KimAbstract:Fast pyrolysis of sewage sludge was carried out under different reaction conditions, and its effects on Bio-Oil characteristics were studied. The effect of metal oxide catalysts on the removal of chlorine in the Bio-Oil was also investigated for four types of catalysts. The optimal pyrolysis temperature for Bio-Oil production was found to be 450 degrees C, while much smaller and larger feed sizes adversely influenced production. Higher flow and feeding rates were more effective but did not greatly affect Bio-Oil yields. The use of the product gas as the fluidizing medium gave an increased Bio-Oil yield. Metal oxide catalysts (CaO and La2O3) contributed to a slight decrease in Bio-Oil yield and an increase in water content but were significantly effective in removal of chlorine from the Bio-Oil. The fixed catalyst bed system exhibited a higher removal rate than when metal oxide-supported alumina was used as the fluidized bed material.
Hyun Ju Park - One of the best experts on this subject based on the ideXlab platform.
-
influence of operation variables on fast pyrolysis of miscanthus sinensis var purpurascens
Bioresource Technology, 2010Co-Authors: Hyeon Su Heo, Hyun Ju Park, Jinheong Yim, Seungsoo Kim, Jung Mi Soh, Junhong Park, Jongki Jeo, Changkook Ryu, Youngkwo ParkAbstract:Abstract Fast pyrolysis of Miscanthus was investigated in a bench-scale fluidized bed reactor for production of Bio-Oil. Process conditions were varied for temperature (350–550 °C), particle size (0.3–1.3 mm), feed rate and gas flow rate. Pyrolysis temperature was the most influential parameter upon the yield and properties of Bio-Oil. The highest Bio-Oil yield of 69.2 wt.% was observed at a temperature of 450 °C which corresponded to the end of the thermal composition of hemicellulose and cellulose. In the Bio-Oil, the water content was 34.5 wt.%, and the main compounds in the organic fraction were phenolics and oxygenates. With increasing temperature, the amount of oxygenates in the Bio-Oil decreased gradually while that of water and aromatics increased rapidly. The Bio-Oil yield was not significantly affected by particle sizes or feed rates. The use of product gases as a fluidizing medium aided in increasing Bio-Oil yield.
-
clean bio oil production from fast pyrolysis of sewage sludge effects of reaction conditions and metal oxide catalysts
Bioresource Technology, 2010Co-Authors: Hyun Ju Park, Hyeon Su Heo, Youngkwo Park, Jinheong Yim, Junhong Park, Jongki Jeo, Changkook Ryu, Seungsoo KimAbstract:Abstract Fast pyrolysis of sewage sludge was carried out under different reaction conditions, and its effects on Bio-Oil characteristics were studied. The effect of metal oxide catalysts on the removal of chlorine in the Bio-Oil was also investigated for four types of catalysts. The optimal pyrolysis temperature for Bio-Oil production was found to be 450 °C, while much smaller and larger feed sizes adversely influenced production. Higher flow and feeding rates were more effective but did not greatly affect Bio-Oil yields. The use of the product gas as the fluidizing medium gave an increased Bio-Oil yield. Metal oxide catalysts (CaO and La 2 O 3 ) contributed to a slight decrease in Bio-Oil yield and an increase in water content but were significantly effective in removal of chlorine from the Bio-Oil. The fixed catalyst bed system exhibited a higher removal rate than when metal oxide-supported alumina was used as the fluidized bed material.
-
Clean Bio-Oil production from fast pyrolysis of sewage sludge: effects of reaction conditions and metal oxide catalysts.
Bioresource technology, 2009Co-Authors: Hyun Ju Park, Hyeon Su Heo, Jinheong Yim, Junhong Park, Changkook Ryu, Young-kwon Park, Jong-ki Jeon, Seungsoo KimAbstract:Fast pyrolysis of sewage sludge was carried out under different reaction conditions, and its effects on Bio-Oil characteristics were studied. The effect of metal oxide catalysts on the removal of chlorine in the Bio-Oil was also investigated for four types of catalysts. The optimal pyrolysis temperature for Bio-Oil production was found to be 450 degrees C, while much smaller and larger feed sizes adversely influenced production. Higher flow and feeding rates were more effective but did not greatly affect Bio-Oil yields. The use of the product gas as the fluidizing medium gave an increased Bio-Oil yield. Metal oxide catalysts (CaO and La2O3) contributed to a slight decrease in Bio-Oil yield and an increase in water content but were significantly effective in removal of chlorine from the Bio-Oil. The fixed catalyst bed system exhibited a higher removal rate than when metal oxide-supported alumina was used as the fluidized bed material.
Anja Oasmaa - One of the best experts on this subject based on the ideXlab platform.
-
results of the international energy agency round robin on fast pyrolysis bio oil production
Energy & Fuels, 2017Co-Authors: Douglas C Elliott, Anja Oasmaa, Dietrich Meier, Bert Van De Beld, A V Bridgwater, Magnus MarklundAbstract:An international round robin study of the production of fast pyrolysis Bio-Oil was undertaken. A total of 15 institutions in six countries contributed. Three biomass samples were distributed to the laboratories for processing in fast pyrolysis reactors. Samples of the Bio-Oil produced were transported to a central analytical laboratory for analysis. The round robin was focused on validating the pyrolysis community understanding of production of fast pyrolysis Bio-Oil by providing a common feedstock for Bio-Oil preparation. The round robin included: distribution of three feedstock samples, hybrid poplar, wheat straw, and a blend of lignocellulosic biomasses, from a common source to each participating laboratory, preparation of fast pyrolysis Bio-Oil in each laboratory with the three feedstocks provided, and return of the three Bio-Oil products (minimum of 500 mL) with operational description to a central analytical laboratory for Bio-Oil property determination. The analyses of interest were CHN, S, trace e...
-
Co-processing of Dry Bio-Oil, Catalytic Pyrolysis Oil, and Hydrotreated Bio-Oil in a Micro Activity Test Unit
Energy & Fuels, 2015Co-Authors: Christian Lindfors, Anja Oasmaa, Eeva Kuoppala, Ville Paasikallio, Matti Reinikainen, Yrjo SolantaustaAbstract:Fast pyrolysis technology is currently moving forward to commercialization, and demonstration plants are at the commissioning stage. The quality of Bio-Oil differs significantly from fossil fuels, and therefore, upgrading technologies are needed to improve the fuel properties of Bio-Oil. Co-processing of Bio-Oil in refinery fluid catalytic cracking (FCC) would have many economic advantages compared to other upgrading technologies because no essential modifications to the refinery are needed. However, because of its different chemical composition, the introduction of Bio-Oil into the FCC unit will introduce uncertainty to the refinery operation. In this paper, co-processing of dry thermal Bio-Oil, catalytic pyrolysis oil, and hydrotreated Bio-Oil was compared using a micro activity test (MAT) setup. The experiments show that the Bio-Oil concentration during co-processing should remain low to avoid high coke formation. Co-processing of dry Bio-Oil also resulted in a much lower liquid yield compared to catal...
-
guidelines for transportation handling and use of fast pyrolysis bio oil 1 flammability and toxicity
Energy & Fuels, 2012Co-Authors: Anja Oasmaa, Anssi Kalli, Christian Lindfors, Douglas C Elliott, David L Springer, Cordner Peacocke, David ChiaramontiAbstract:An alternative sustainable fuel, biomass-derived fast pyrolysis oil or “Bio-Oil”, is coming into the market in Europe. Fast pyrolysis pilot and demonstration plants for fuel applications producing tonnes of Bio-Oil are in operation, and commercial plants are under design. There will be increasingly larger amounts of Bio-Oil transportation on water and by land, leading to a need for further specifications and supporting documentation. The properties of Bio-Oil are different from conventional liquid fuels and, therefore, may need to overcome both technical and marketing hurdles for its acceptability in the fuels market. Multiple material safety data sheets (MSDSs) are currently being used by different producers, but there is a desire to update these as more information becomes available. In order to standardize Bio-Oil, quality specifications are being adopted. The first Bio-Oil burner fuel standard in ASTM D7544 was approved in 2010. CEN standardization has been initiated in Europe. In the EU, a new chemic...
-
fast pyrolysis bio oils from wood and agricultural residues
Energy & Fuels, 2010Co-Authors: Anja Oasmaa, Yrjo Solantausta, Vesa Arpiaine, Eeva Kuoppala, Kai SipilaAbstract:Fast pyrolysis Bio-Oil (pyrolysis liquid) from plant residues is one alternative to replace fossil fuels and feedstocks. Fast pyrolysis liquid is a potential source of revenues for companies who have biomass residues at their disposal. Once produced, Bio-Oils may be shipped, stored, and utilized much like conventional liquid fuels once their specific fuel properties are taken into account. First encouraging large scale Bio-Oil utilization tests with published results were carried out in Stockholm in the 1990s in a heating boiler designed for heavy fuel oil. Industrial ovens are also potential users of Bio-Oil. Bio-Oil would also be an interesting fuel for small scale distributed heat or power production. However, introducing a new fuel into the markets is not going to happen easily. Bio-Oil is quite different from conventional liquid fuels, and many challenges remains to be overcome. A stepwise market introduction is proposed: Bio-Oil would first replace fuel oil in boilers, where its properties would not...
Hyeon Su Heo - One of the best experts on this subject based on the ideXlab platform.
-
influence of operation variables on fast pyrolysis of miscanthus sinensis var purpurascens
Bioresource Technology, 2010Co-Authors: Hyeon Su Heo, Hyun Ju Park, Jinheong Yim, Seungsoo Kim, Jung Mi Soh, Junhong Park, Jongki Jeo, Changkook Ryu, Youngkwo ParkAbstract:Abstract Fast pyrolysis of Miscanthus was investigated in a bench-scale fluidized bed reactor for production of Bio-Oil. Process conditions were varied for temperature (350–550 °C), particle size (0.3–1.3 mm), feed rate and gas flow rate. Pyrolysis temperature was the most influential parameter upon the yield and properties of Bio-Oil. The highest Bio-Oil yield of 69.2 wt.% was observed at a temperature of 450 °C which corresponded to the end of the thermal composition of hemicellulose and cellulose. In the Bio-Oil, the water content was 34.5 wt.%, and the main compounds in the organic fraction were phenolics and oxygenates. With increasing temperature, the amount of oxygenates in the Bio-Oil decreased gradually while that of water and aromatics increased rapidly. The Bio-Oil yield was not significantly affected by particle sizes or feed rates. The use of product gases as a fluidizing medium aided in increasing Bio-Oil yield.
-
clean bio oil production from fast pyrolysis of sewage sludge effects of reaction conditions and metal oxide catalysts
Bioresource Technology, 2010Co-Authors: Hyun Ju Park, Hyeon Su Heo, Youngkwo Park, Jinheong Yim, Junhong Park, Jongki Jeo, Changkook Ryu, Seungsoo KimAbstract:Abstract Fast pyrolysis of sewage sludge was carried out under different reaction conditions, and its effects on Bio-Oil characteristics were studied. The effect of metal oxide catalysts on the removal of chlorine in the Bio-Oil was also investigated for four types of catalysts. The optimal pyrolysis temperature for Bio-Oil production was found to be 450 °C, while much smaller and larger feed sizes adversely influenced production. Higher flow and feeding rates were more effective but did not greatly affect Bio-Oil yields. The use of the product gas as the fluidizing medium gave an increased Bio-Oil yield. Metal oxide catalysts (CaO and La 2 O 3 ) contributed to a slight decrease in Bio-Oil yield and an increase in water content but were significantly effective in removal of chlorine from the Bio-Oil. The fixed catalyst bed system exhibited a higher removal rate than when metal oxide-supported alumina was used as the fluidized bed material.
-
Clean Bio-Oil production from fast pyrolysis of sewage sludge: effects of reaction conditions and metal oxide catalysts.
Bioresource technology, 2009Co-Authors: Hyun Ju Park, Hyeon Su Heo, Jinheong Yim, Junhong Park, Changkook Ryu, Young-kwon Park, Jong-ki Jeon, Seungsoo KimAbstract:Fast pyrolysis of sewage sludge was carried out under different reaction conditions, and its effects on Bio-Oil characteristics were studied. The effect of metal oxide catalysts on the removal of chlorine in the Bio-Oil was also investigated for four types of catalysts. The optimal pyrolysis temperature for Bio-Oil production was found to be 450 degrees C, while much smaller and larger feed sizes adversely influenced production. Higher flow and feeding rates were more effective but did not greatly affect Bio-Oil yields. The use of the product gas as the fluidizing medium gave an increased Bio-Oil yield. Metal oxide catalysts (CaO and La2O3) contributed to a slight decrease in Bio-Oil yield and an increase in water content but were significantly effective in removal of chlorine from the Bio-Oil. The fixed catalyst bed system exhibited a higher removal rate than when metal oxide-supported alumina was used as the fluidized bed material.
Changkook Ryu - One of the best experts on this subject based on the ideXlab platform.
-
influence of operation variables on fast pyrolysis of miscanthus sinensis var purpurascens
Bioresource Technology, 2010Co-Authors: Hyeon Su Heo, Hyun Ju Park, Jinheong Yim, Seungsoo Kim, Jung Mi Soh, Junhong Park, Jongki Jeo, Changkook Ryu, Youngkwo ParkAbstract:Abstract Fast pyrolysis of Miscanthus was investigated in a bench-scale fluidized bed reactor for production of Bio-Oil. Process conditions were varied for temperature (350–550 °C), particle size (0.3–1.3 mm), feed rate and gas flow rate. Pyrolysis temperature was the most influential parameter upon the yield and properties of Bio-Oil. The highest Bio-Oil yield of 69.2 wt.% was observed at a temperature of 450 °C which corresponded to the end of the thermal composition of hemicellulose and cellulose. In the Bio-Oil, the water content was 34.5 wt.%, and the main compounds in the organic fraction were phenolics and oxygenates. With increasing temperature, the amount of oxygenates in the Bio-Oil decreased gradually while that of water and aromatics increased rapidly. The Bio-Oil yield was not significantly affected by particle sizes or feed rates. The use of product gases as a fluidizing medium aided in increasing Bio-Oil yield.
-
clean bio oil production from fast pyrolysis of sewage sludge effects of reaction conditions and metal oxide catalysts
Bioresource Technology, 2010Co-Authors: Hyun Ju Park, Hyeon Su Heo, Youngkwo Park, Jinheong Yim, Junhong Park, Jongki Jeo, Changkook Ryu, Seungsoo KimAbstract:Abstract Fast pyrolysis of sewage sludge was carried out under different reaction conditions, and its effects on Bio-Oil characteristics were studied. The effect of metal oxide catalysts on the removal of chlorine in the Bio-Oil was also investigated for four types of catalysts. The optimal pyrolysis temperature for Bio-Oil production was found to be 450 °C, while much smaller and larger feed sizes adversely influenced production. Higher flow and feeding rates were more effective but did not greatly affect Bio-Oil yields. The use of the product gas as the fluidizing medium gave an increased Bio-Oil yield. Metal oxide catalysts (CaO and La 2 O 3 ) contributed to a slight decrease in Bio-Oil yield and an increase in water content but were significantly effective in removal of chlorine from the Bio-Oil. The fixed catalyst bed system exhibited a higher removal rate than when metal oxide-supported alumina was used as the fluidized bed material.
-
Clean Bio-Oil production from fast pyrolysis of sewage sludge: effects of reaction conditions and metal oxide catalysts.
Bioresource technology, 2009Co-Authors: Hyun Ju Park, Hyeon Su Heo, Jinheong Yim, Junhong Park, Changkook Ryu, Young-kwon Park, Jong-ki Jeon, Seungsoo KimAbstract:Fast pyrolysis of sewage sludge was carried out under different reaction conditions, and its effects on Bio-Oil characteristics were studied. The effect of metal oxide catalysts on the removal of chlorine in the Bio-Oil was also investigated for four types of catalysts. The optimal pyrolysis temperature for Bio-Oil production was found to be 450 degrees C, while much smaller and larger feed sizes adversely influenced production. Higher flow and feeding rates were more effective but did not greatly affect Bio-Oil yields. The use of the product gas as the fluidizing medium gave an increased Bio-Oil yield. Metal oxide catalysts (CaO and La2O3) contributed to a slight decrease in Bio-Oil yield and an increase in water content but were significantly effective in removal of chlorine from the Bio-Oil. The fixed catalyst bed system exhibited a higher removal rate than when metal oxide-supported alumina was used as the fluidized bed material.