摘要
介绍了高水分褐煤不经预干燥直接气化的工艺和技术研究进展,综述了反应体系以及反应气氛对褐煤转化特性的影响。目前,高湿褐煤气化的工艺流程复杂、热效率低、技术不成熟,热化学转化过程的反应机理、反应阶段、水分迁移的规律等都有待深入研究;以褐煤地下气化为代表的利用方式尚需探索反应过程机理,寻找提高气化效率和热效率的方法;此外,可尝试采用流化床粉煤气化集成自热式煤气煤粉逆流熔渣气流床气化技术,开展高水分褐煤或者木屑与褐煤掺混物的气化示范应用研究。
The research progress of in-situ thermochemical conversion process and technology for high moisture content lignite was introduced,and the influence of reaction system and atmosphere on the conversion characteristics of high moisture content lignite was summarized. It was pointed out that due to the main characteristics of high moisture content lignite utilization process,such as complexity,low thermal efficiency and immature technology,the reaction mechanism,reaction stage and moisture migration rules still require further research. It is necessary to explore the reaction mechanism and to explore the ways of improving gasification and thermal efficiency for utilization mode of lignite underground gasification as representative. In addition,it can be attempted to employ the fluidized bed pulverized coal gasification integrated with self-heating pulverized coal gas and slag entrained flow gasification technology to carry out researches on the gasification demonstration application of high moisture lignite or wood chips and lignite mixture.
引文
[1]Ding Lu,Dai Zhenghua,Guo Qinghua,et al.Effects of in-situ interactions between steam and coal on pyrolysis and gasification characteristics of pulverized coals and coal water slurry[J].Appl Energy,2017,187:627-639.
[2]赵利安,许振良.洁净煤技术概论[M].沈阳:东北大学出版社,2011:1-3.
[3]Depci T,Karta M,Karaca H.Co-liquefaction process olive bagasse and peat with lignite and the effect of biomasses on the products and oil yield[J].Energy,2018,156:750-757.
[4]Karthikeyan M,Wu Zhonghua,Mujumdar A S.Low-rank coal drying technologies-Current status and new developments[J].Dry Technol,2009,27(3):403-415.
[5]Hannes J,Liese T.Advanced CtL/CtG technologies for lignite[J].Fuel,2017,196:543-549.
[6]Stańczyk K,Smoliński A,Kapusta K,et al.Dynamic experimental simulation of hydrogen oriented underground gasification of lignite[J].Fuel,2010,89(11):3307-3314.
[7]Wiatowski M,Kapusta K,Stańczyk K,et al.Efficiency assessment of underground gasification of ortho-and meta-lignite:High-pressure ex situ experimental simulations[J].Fuel,2019,236:221-227.
[8]王毅.块状褐煤高温蒸汽热解的宏细观特性分析及应用[M].徐州:中国矿业大学出版社,2012:1-2.
[9]曹代勇.煤炭地质勘查与评价[M].徐州:中国矿业大学出版社,2007:2-5.
[10]Xiao Yahui,Xu Shaoping,Tursun Y,et al.Catalytic steam gasification of lignite for hydrogen-rich gas production in a decoupled triple bed reaction system[J].Fuel,2017,189:57-65.
[11]Kapusta K,Wiatowski M,Stańczyk K.An experimental ex-situ study of the suitability of a high moisture ortho-lignite for underground coal gasification(UCG)process[J].Fuel,2016,179:150-155.
[12]Drosatos P,Nikolopoulos N,Niko A.Numerical examination of an operationally flexible lignite-fired boiler including its convective section using as supporting fuel pre-dried lignite[J].Fuel Process Technol,2018,166:237-257.
[13]Li Chao,Liao Junjie,Yin Yang,et al.Kinetic analysis on the microwave drying of different forms of water in lignite[J].Fuel Process Technol,2018,176:174-181.
[14]Han Jun,Zhang Li,Kim J,et al.Fast pyrolysis and combustion characteristic of three different brown coals[J].Fuel Process Technol,2018,176:15-20.
[15]盛明,王勇.胜利褐煤液化初期反应动力学研究[J].洁净煤技术,2017,23(5):23-27.
[16]Jackson W R,Marshall M.Lignites:Their occurrence,production and utilisation[J].Fuel,2017,189:443-444.
[17]Wang Zhicai,Li Lei,Hu Runan,et al.Study on the thermal liquefaction of Xilinguole lignite in solvent at high temperature[J].Fuel Process Technol,2018,176:167-173.
[18]Uyar T,Suyadal Y.Deactivation kinetics for lignite gasification in a fluidized bed reactor[J].Fuel,2019,236:1050-1056.
[19]de Girolamo A,Tan V,Liu Zhenyu,et al.Pyrolysis of a lignite briquette-Experimental investigation and 1-dimensional modelling approach[J].Fuel,2018,212:533-545.
[20]Abdelsayed V,Shekhawat D,Smith M W,et al.Microwave-assisted pyrolysis of Mississippi coal:A comparative study with conventional pyrolysis[J].Fuel,2018,217:656-667.
[21]Atwood M T,Schulman B L.The toscoal process-pyrolysis of western coals and lignites for char and oil production[J].Am Chem Soc Div Fuel Chem Prepr,2017,22(2):233.
[22]曲旋,张荣,孙东凯,等.固体热载体热解霍林河褐煤实验研究[J].燃料化学学报,2011,39(2):85-89.
[23]汪寿建.现代煤气化技术发展趋势及应用综述[J].化工进展,2016,35(3):653-664.
[24]Tursun Y,Liu Jingang,Xu Shaoping,et al.Catalytic steam gasification of lignite with olivine as solid heat carrier[J].Fuel,2013,112:641-645.
[25]Gong Xuzhong,Wang Mingyong,Wang Zhi,et al.Roles of inherent mineral matters for lignite water slurry electrolysis in H2SO4 system[J].Energy Convers Manage,2013,75:431-437.
[26]王传成,刘建忠,虞育杰,等.内蒙古褐煤的成浆特性[J].中国电机工程学报,2010,30(S1):85-90.
[27]龚志华,顾兆云,徐志强,等.提高印尼褐煤成浆性的试验研究[J].煤炭加工与综合利用,2008(1):26-28.
[28]姜炜,程乐明,张荣,等.连续式超临界水反应器中褐煤制氢过程影响因素的研究[J].燃料化学学报,2008,36(6):660-665.
[29]Xin Lin,Wang Zuotang,Wang Gang,et al.Technological aspects for underground coal gasification in steeply inclined thin coal seams at Zhongliangshan coal mine in China[J].Fuel,2017,191:486-494.
[30]Kapusta K,Wiatowski M,Stańczyk K.An experimental ex-situ study of the suitability of a high moisture ortho-lignite for underground coal gasification(UCG)process[J].Fuel,2016,179:150-155.
[31]Selivanova T,Grebenyuk I,Belov A.Control of combustion area using electrical resistivity method for underground coal gasification[J].Int J Min Sci Technol,2012,22(3):351-355.
[32]邰学林.复合粉煤气化技术介绍[J].化工设计通讯,2013,39(5):6-11.
[33]邰学林.自热式煤气煤粉逆流气流床气化炉:201310097061.X[P].2013-03-26.
[34]Takarada T,Ohtsuka Y,Tomita A.Pressurized fluidized-bed gasification of catalyst-loaded yallourn brown coal[J].J Fuel Soc Japan,2009,67(8):683-692.
[35]王鹏,文芳,步学朋,等.煤热解特性研究[J].煤炭转化,2015,28(1):8-13.
[36]Hayashi J I,Takahashi H,Iwatsuki M,et al.Rapid conversion of tar and char from pyrolysis of a brown coal by reactions with steam in a drop-tube reactor[J].Fuel,2000,79(3/4):439-447.
[37]Gao Haojie,Zhu Yuezhao,Fu Feng.Pyrolysis of Hailar lignite in an autogenerated steam agent[J].J Therm Anal Calorim,2014,117(2):973-978.
[38]Patel V R,Upadhyay D S,Patel R N.Gasification of lignite in a fixed bed reactor:Influence of particle size on performance of downdraft gasifier[J].Energy,2014,78:323-332.
[39]Versan M,?zbas E,Karacan O,et al.Effect of particle size on coal pyrolysis[J].J Anal Appl Pyrolysis,1998,45(2):103-110.
[40]张翠珍,衣晓青,刘亮.煤热解特性及热解反应动力学研究[J].热力发电,2006,35(4):17-20.
[41]Guo Feiqiang,Li Xiaolei,Wang Yan,et al.Characterization of Zhundong lignite and biomass co-pyrolysis in a thermogravimetric analyzer and a fixed bed reactor[J].Energy,2017,141:2154-2163.
