Abstract: The oxidative catalytic cracking effect of modified urban sludge ash on Yulin coal is studied by using a fixed bed reactor,and the influence of NiO loading amount on product distribution is investigated.Desorption and other characterizations are conducted to analyze the mechanism of the modified catalyst in the catalytic cracking of coal pyrolysis volatiles.The results show that compared with catalyst-free,the yield of tar by using sludge ash loaded with 20% NiO as catalyst decreases from 15.58% to 9.96%,but the mass fraction of light tar increases from 58.0% to 87.5%.The volume yield of gas increases by 2.73 times.The catalytic effect of the catalyst gradually decreases with the increase of times of uses,which is caused by the accumulation of carbon on the surface area.
郭双淇, 班延鹏, 杨英杰, 吕剑楠, 靳立军, 胡浩权. 改性城市污泥灰对榆林煤热解挥发物的原位氧化催化裂解研究[J]. 现代化工, 2022, 42(9): 146-150,154.
GUO Shuang-qi, BAN Yan-peng, YANG Ying-jie, LV Jian-nan, JIN Li-jun, HU Hao-quan. In-situ oxidation and catalytic cracking of volatiles from pyrolysis of Yulin coal by modified urban sludge ash. Modern Chemical Industry, 2022, 42(9): 146-150,154.
[1] 中华人民共和国国家统计局.2020中国统计年鉴.统计理论与实践[M].北京:中国统计出版社,2021. [2] 郑化安.中低温煤热解技术研究进展及产业化方向[J].洁净煤技术,2018,24(1):13-18. [3] 刘振宇.煤化学的前沿与挑战:结构与反应[J].中国科学:化学,2014,44(9):1431-1439. [4] 刘芳,王林,杨卫兰,等.中低温煤焦油深加工技术及市场前景分析[J].现代化工,2012,32(7):7-11. [5] 姚春雷,全辉,张忠清.中、低温煤焦油加氢生产清洁燃料油技术[J].化工进展,2013,32(3):501-507. [6] Jahromi H,Agblevor F A.Hydrodeoxygenation of pinyon-juniper catalytic pyrolysis oil using red mud-supported nickel catalysts[J].Applied Catalysis B:Environmental,2018,236:1-12. [7] Wang D,Jin L,Wei B,et al.Oxidative catalytic cracking and reforming of coal pyrolysis volatiles over NiO[J].Energy & Fuels,2020,34(6):6928-6937. [8] 倪少仁,陈景阳,黄魁.城市污水污泥现状及未来的发展[J].广东化工,2020,47(14):133-134. [9] 戴晓虎,张辰,章林伟,等.碳中和背景下污泥处理处置与资源化发展方向思考[J].给水排水,2021,57(3):1-5. [10] Tsvetkov M V,Podlesniy D N,Freyman V M,et al.Behavior of the sewage sludge ash under the conditions of high-temperature processing[J].Russian Journal of Applied Chemistry,2020,93(6):881-887. [11] Li Y,Amin M N,Lu X,et al.Pyrolysis and catalytic upgrading of low-rank coal using a NiO/MgO-Al2O3 catalyst[J].Chemical Engineering Science,2016,155:194-200. [12] Zhou Y,Chen Z,Gong H,et al.Characteristics of dehydration during rice husk pyrolysis and catalytic mechanism of dehydration reaction with NiO/γ-Al2O3 as catalyst[J].Fuel,2019,245:131-138. [13] Hosseinpour M,Fatemi S,Ahmadi S J.Deuterium tracing study of unsaturated aliphatics hydrogenation by supercritical water in upgrading heavy oil.Part Ⅱ:Hydrogen donating capacity of water in the presence of iron(Ⅲ) oxide nanocatalyst[J].The Journal of Supercritical Fluids,2016,110:75-82. [14] Nie L,Wang J,Tan Q.In-situ preparation of macro/mesoporous NiO/LaNiO3 pervoskite composite with enhanced methane combustion performance[J].Catalysis Communications,2017,97:1-4. [15] Bukur D B,Silvester L,Fischer N,et al.On the use of an in situ magnetometer to study redox and sintering properties of NiO based oxygen carrier materials for chemical looping steam methane reforming[J].International Journal of Hydrogen Energy,2019,44(33):18093-18102. [16] Johansson M,Mattisson T,Lyngfelt A.Use of NiO/NiAl2O4 particles in a 10 kW chemical-looping combustor[J].Industrial & Engineering Chemistry Research,2006,45(17):5911-5919. [17] Wang D,Li Y,Jin L,et al.Integrated process for partial oxidation of heavy oil and in-situ reduction of red mud[J].Applied Catalysis B:Environmental,2019,258:117944. [18] Wang D,Jin L,Li Y,et al.Upgrading of heavy oil with chemical looping partial oxidation over M2+ doped Fe2O3[J].Energy & Fuels,2018,33(1):257-265. [19] Zhang Y,Williams P T.Carbon nanotubes and hydrogen production from the pyrolysis catalysis or catalytic-steam reforming of waste tyres[J].Journal of Analytical and Applied Pyrolysis,2016,122:490-501. [20] Yao D,Yang H,Chen H,et al.Co-precipitation,impregnation and so-gel preparation of Ni catalysts for pyrolysis-catalytic steam reforming of waste plastics[J].Applied Catalysis B:Environmental,2018,239:565-577. [21] 郑小刚,宋玉春,李江华,等.CH4/CO2催化重整镍基催化剂的研究进展[J].现代化工,2017,37(3):72-75. [22] Fekhar B,Gombor L,Miskolczi N.Pyrolysis of chlorine contaminated municipal plastic waste:In-situ upgrading of pyrolysis oils by Ni/ZSM-5,Ni/SAPO-11,red mud and Ca(OH2 containing catalysts[J].Journal of the Energy Institute,2019,92(5):1270-1283.