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- 저자 : Humair Ahmed Baloch (검색결과 2 건)
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Parametric study of pyrolysis and steam gasification of rice straw in presence of K2CO3
Humair Ahmed Baloch,Abdul Waheed Bhutto,Tianhua Yang,Haipeng Sun,Jie Li,Sabzoi Nizamuddin,Rundong Li,Zhanguo Kou,Yang Sun 한국화학공학회 2016 Korean Journal of Chemical Engineering Vol.33 No.9
A parametric study of pyrolysis and steam gasification of rice straw (RS) was performed to investigate the effect of the presence of K2CO3 on the behavior of gas evolution, gas component distribution, pyrolysis/gasification reactivity, the quality and volume of synthetic gas. During pyrolysis, with the increase in K2CO3 content in RS (i) the instantaneous CO2 concentration was increased while CO concentration was relatively stable; (ii) the yield of CO2 and H2 increased on the cost of CH4. During steam gasification of RS, with the increase in K2CO3 content in RS (i) the instantaneous concentration of CO2 and H2 increased while instantaneous concentration of CO and CH4 decreased; (ii) the yield of CO2 and H2 production and total yield increased; and (iii) yield of CO and CH4 production followed the order: 9% K2CO3 RS<6% K2CO3 RS<raw RS<3% K2CO3 RS<water-leached RS. Water-leached RS showed the highest pyrolysis reactivity, while stream gasification reactivity was proportional to K2CO3 content in RS. The results of this study reveal that the presence of K2CO3 during pyrolysis and steam gasification of RS effectively improves production of H2 rich gas.
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Hydrothermal carbonization of oil palm trunk via taguchi method
Sundus Saeed Qureshi,Premchand,Mahnoor Javed,Sumbul Saeed,Rashid Abro,Shaukat Ali Mazari,Nabisab Mujawar Mubarak,Muhamad Tahir Hussain Siddiqui,Humair Ahmed Baloch,Sabzoi Nizamuddin 한국화학공학회 2021 Korean Journal of Chemical Engineering Vol.38 No.4
Hydrothermal carbonization (HTC) and its parameters show a significant role in the quality of HTC products and the distribution of yield. The present study investigates the optimal conditions that are suitable to produce maximum yield products of solid, liquid, and gas, from HTC of oil palm trunk (OPT), by following the Taguchi method. Moreover, all the three products of HTC were analyzed using various characterizations. The optimum runs for hydrochar yield, liquid yield, and gaseous yield were run 1 (R1), run 4 (R4), and run 9 (R9), respectively. The reaction temperature was found to be the most influential parameter that affected the yield distribution during HTC, where low temperature supported solid production, intermediate temperatures favored liquid yield, and high temperature produced higher gaseous yield. Elemental analysis, H/C and O/C atomic ratios, higher heating value (HHV), and energy density values of hydrochar recommended that the HTC process has significantly converted OPT into better energy fuel. The energy densification value of hydrochar ranged between 1.28 and 1.40, which confirmed the significance of the HTC process. Two characteristic peaks from FTIR were observed at 3,430 cm1 and 2,923 cm1 hydrochar. SEM analysis confirmed that the porosity of hydrochar was higher than OPT after HTC. However, the major organic matter in the bio-oil traced by GC-MS analysis was acetic acid, accounting for about 59.9-71.7%, and the outlet gaseous product consisted of 0.87-9.17% CH4, 3.88-29.02% CO2, 1.07-7.89% CO, and 0.31-1.97% H2, respectively, as shown by GC-TCD.
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