SHENG Ming;WANG Yong;

• 1:Coal Chemistry Branch of China Coal Research Institute
• 2:State Key Laboratory of Coal Mining and Clean Utilization
• 3:State Key Laboratory of Coal Mining and Environmental Protection

Abstract：

To investigate the reaction kinetics of Shengli brown coal liquefaction at initial stage,experiments were carried out using a micro-autoclave with a very rapidly heating and cooling system.The study of reaction kinetics liquefaction of at initial stage were investigated according to the parameters.Although the heating time is short,partial coal is already converted when the autoclave reaches the reaction temperature.The conversion ratio is 28.12% at 440 ℃ with a residence time of 0.At lower temperature,Shengli brown coal is solely pyrolyzed,and there is less conversion at initial stage.The conversion is 28% with a 10 min holding time at 380 ℃ and it is almost constant.With the temperature increasing,the conversion ratio,oil and water yield,and gas yield rise,and the increasing rate is higher at initial 10 min,and the trend postpones at late 10-25 min,because the asphaltenes as intermediates are hardly converted to oil fraction.

Key Words： coal liquefaction;reaction kinetics;conversion;coal liquefaction at initial stage

Abstract:

Keywords:

Foundation: 国家重点研发计划资助项目(2016YFB0600303)

Authors: SHENG Ming;WANG Yong;

DOI: 10.13226/j.issn.1006-6772.2017.05.005

References：

• [1]CRONAUER D C,SHAH Y T,RUBERTO R G.Kinetics of thermal liquefaction of Belle Ayr subbituminous coal[J].Industrial&Engineering Chemistry Process Design and Development,2002,17(3):281-288.
• [2]SHAH Y T,CRONAUER D C,MCILVRIED H G,et al.Kinetics of catalytic liquefaction of Big Horn coal in a segmented bed reactor[J].Industrial&Engineering Chemistry Process Design and Development,2002,17(3):288-301.
• [3]CURRAN G P,STRUCK R,GORIN E.Mechanism of hydrogentransfer process to coal and coal extract[J].Industrial&Engineering Chemistry Process Design and Development,1967,6(2):166-173.
• [4]BRUNSON R J.Kinetics of donor-vehicle coal liquefaction in a flow reactor[J].Fuel,1979,58(3):203-207.
• [5]HAN K W,DIXIT V B,WEN C Y.Analysis and scale-up consideration of bituminous coal liquefaction rate processes[J].Industrial&Engineering Chemistry Process Design and Development,1978,17(1):16-21.
• [6]张德祥.年轻煤在石油重油中加氢液化的研究:煤液化动力学初探[J].淮南矿业学院学报,1990,10(1):113-122.
• [7]GERTENBACH D D,BALDWIN R M,BAIN R L.Modeling of bench-scale coal liquefaction systems[J].Industrial&Engineering Chemistry Process Design and Development,1982,21(3):490-500.
• [8]XU B,KANDIYOTI R.Two-stage kinetic model of primary coal liquefaction[J].Energy&Fuels,1996,10(5):1115-1127.
• [9]KIDOGUCHI A,ITOH H,HIRAIDE M,et al.Simulation of initial stage reactions in the direct coal liquefaction of sub-bituminous coals[J].Fuel,2001,80(9):1325-1331.
• [10]ONOZAKI M,NAMIKI Y,ISHIBASHI H,et al.A process simulation of the NEDOL coal liquefaction process[J].Fuel Processing Technology,2000,64(1/2/3):253-269.
• [11]王勇.煤直接液化反应动力学的高压釜试验研究[D].北京:煤炭科学研究总院,2007.
• [12]FERRANCE J P,HOLDER G D.Development of a general model for coal liquefaction[J].Preprints Paper American Chemical Society,Division of Fuel Chemistry,1996,41(3):941-945.
• [13]FERRANCE J,WARZINSKI R P.A liquefaction kinetic research needs assessment[J].Preprints Paper American Chemical Society,Division of Fuel Chemistry,1996,41(3):928-934.
• [14]COMOLLI A G,LEE T,PROPPER G A,et al.The Shenhua coal direct liquefaction plant[J].Fuel Processing Technology,1999,59(2):207-215.
• [15]ITOH H,HIRAIDE M,AKIRA K,et al.Simulator for coal liquefaction based on the NEDOL process[J].Industrial&Engineering Chemistry Research,2001,40(1):210-217.