Three kinds of lower rank bituminous coals from Yanzhou mine and Tengxian mine from Shandong Province were treated and hydrogenated in the study. The test re- sults show that the performance of hydrogenation liquefact...Three kinds of lower rank bituminous coals from Yanzhou mine and Tengxian mine from Shandong Province were treated and hydrogenated in the study. The test re- sults show that the performance of hydrogenation liquefaction of the pretreated coals is improved markedly. Under the test condition of H2 initial pressure 8.2 MPa, addition of FeSO4·7H2O and S as catalyst, final reacting temperature 400 ℃ and reacting time 1.5 h, the oil yield of pretreated YZ1 coal is 69.76% compared with 62.53% of oil yield of un- treated YZ1. Seminally the oil yield of pretreated YZ2 coal is 55.43% compared with 20.88% of untreated YZ2 coal. The results of tests also prove that the improving degree of hydrogenation liquefaction of the pretreated coals is related with radiation duration when the radiation frequency and radiation power of ultrasonic wave are fixed.展开更多
文摘Three kinds of lower rank bituminous coals from Yanzhou mine and Tengxian mine from Shandong Province were treated and hydrogenated in the study. The test re- sults show that the performance of hydrogenation liquefaction of the pretreated coals is improved markedly. Under the test condition of H2 initial pressure 8.2 MPa, addition of FeSO4·7H2O and S as catalyst, final reacting temperature 400 ℃ and reacting time 1.5 h, the oil yield of pretreated YZ1 coal is 69.76% compared with 62.53% of oil yield of un- treated YZ1. Seminally the oil yield of pretreated YZ2 coal is 55.43% compared with 20.88% of untreated YZ2 coal. The results of tests also prove that the improving degree of hydrogenation liquefaction of the pretreated coals is related with radiation duration when the radiation frequency and radiation power of ultrasonic wave are fixed.
