5.To prepar the towngas by catalytic gasification of Da-Tong coal under elevated pressure Ⅰ. The characteristics of catalytic gasification of Da-Tong coal and its coke
6.Through the fatigue simulation test of deformed bellows and theoretical analysis,the residue life of the bellow expansion joint was estimated, which laid a good foundation for the residue life assessment of complete inservice towngas power pipeline network.
7.The analysis of the failure of deformed bellow expansion joint of towngas power pipeline network in service found that the deformation of the bellows were mainly caused by installation error and ground settlement.
