According to the present situation of coal industrial development ,we have analysed some safety problem that arouses from methane gas, introduced the mature and potential application of vacuum equipment to this profession, and put forward that the application of vavuum pump to the coal industrial, can meet safety demand, accord with the basic national policy of the circulating economy, energy saving economy and continuable development.
The article describes the theory and technology on gas extraction to relief underground pressure in high gassy Huainan mining area, on control of surrounding rocks in loose and soft coal-rock roadway and also the ideal and technology for underground mine design in high gassy complicated geological condition, it introduces the main results achieved in safety and high effective extraction and comprehensive utilization in Huainan Mine Group and economic and social benefits obtained.
Cauchy problem for linearized system of two-dimensional isentropic flow with axisymmetrical initial data in gas dynamics
The explicit solution to Cauchy problem for linearized system of two-dimensional isentropic flow with axisymmetrical initial data in gas dynamics is given.
Photocatalytic Oxidation of Aniline in the Gas Phase Using Porous TiO2 Thin Films
The gas-phase photocatalytic oxidation of aniline on a new kind of porous nano-TiO2 composite films is investigated.
Acetone solution-casting films of poly(methylmethacrylate) were analyzed by differential scanning calorimetry and pyrolysis gas chromatography-mass spectroscopy under natural evaporation and ultrasonic vibration, respectively.
Effects of MgO promoter on properties of Ni/Al2O3 catalysts for partial oxidation of methane to syngas
The effects of MgO promoter on the physicochemical properties and catalytic performance of Ni/Al2O3 catalysts for the partial oxidation of methane to syngas were studied by means of BET, XRD, H2-TPR, TEM and performance evaluation.
Moreover, for the catalysts with a proper amount of MgO promoter, the nickel dispersiveness was enhanced, therefore making their catalytic performance in methane partial oxidation improved.
The plasma catalyst treatment could totally change the distribution of aromatic products with higher methane conversion compared to the untreated catalyst.
Besides precursors, methane as the carbon source and hydrogen as the ablation, oxygen or H2O was alternatively inlet into the reactive chamber at the pressure of 0.05 MPa.
Pressure waves in a porous medium saturated with a gassy fluid
Experimental data on the evolution of pressure waves in a consolidated porous medium saturated with a gassy fluid are obtained.
Structure and dynamics of finite-amplitude pressure perturbations in a porous medium saturated with gassy fluid
Experimental data on the structure and dynamics of pressure perturbations of moderate intensity in a porous medium saturated with a gassy fluid are obtained and generalized on the basis of a theoretical analysis.
Steady temperature field associated with the flow of gassy oil in a porous medium