专利详情

专利名称	Apparatus and method for multistage hierarchical pyrolysis and gasification of solid fuels
申请号	US201113881824	专利类型	US
公开（公告）号	US9464245(B2)	公开（授权）日	2016.10.11
申请（专利权）人	中国科学院过程工程研究所	发明（设计）人	Gao Shiqiu;Xu Guangwen;Zhou Qi;Xu Xufei;Wang Yin;Li Qiang
主分类号	C10J3/56	IPC主分类号	C10J3/56;C10B49/04;C10J3/60;C10G1/02;C10B49/10;C10B53/04;C10B57/02;C10J3/48;B01J8/18;B01J8/00;B01J8/28;C10J3/72;C10J3/50;C10J3/52;C10J3/84
专利有效期	Apparatus and method for multistage hierarchical pyrolysis and gasification of solid fuels 至Apparatus and method for multistage hierarchical pyrolysis and gasification of solid fuels	法律状态
说明书摘要	This invention relates to an apparatus and a method for multistage hierarchical pyrolysis and gasification of solid fuels. The apparatus comprises a feeding device 1, a multistage fluidized bed reactor 6, a residual discharging valve 9, a cyclone 10 and a condenser 11. A gas inlet is provided at the bottom of the multistage fluidized bed reactor 6 and a number of stages of fluidized beds 3 are provided within the multistage fluidized bed 6, wherein the fluidized beds 3 are separated by a number of perforated distributors 5. The top stage fluidized bed 3 is connected with the feeding device 1 and the coal fed thereto is heated by char obtained from pyrolysis in this stage and the mixture of high temperature ascending pyrolysis and gasification gas to undergo pyrolysis reactions at low temperature, thereby to obtain solid particles after preliminary pyrolytic process. The solid particles flow downwards through an overflow standpipe 4/the perforated distributor 5 to the next stage of the fluidized bed and then are pyrolyzed through being heated by char and the mixture of pyrolysis and gasification gas. The solid particles in turn pass into the next stage of the fluidized bed and finally enter into the bottom stage fluidized bed to undergo gasification reactions. More light fractions in tar can be produced using the present apparatus and method.