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An approximate method is often applied to solve the differential mass conservation equations, of which the solution by exact analytical methods is impossible. The methodology developed in this work is based on an approximate method for decoupling the gas conservation equation. With this strategy, the calculation of gas concentration and solid conversion at any time and position can be converted to...
The catalytic gasification properties and reaction kinetics of rice husk (RH) were studied by thermogravimetric analysis (TGA). The homogeneous model (HM) and shrinking core model (SCM) were used to simulate the gasification behaviors. The results indicated that magnesia and ferric oxide had obvious effects on the pyrolysis and gasification properties. They could increase the pyrolysis rate and gasification...
Adsorption experiments of vapor-phase elemental mercury were carried out using bromine and iodine modified Kaolin, Zeolite, Bentonite and Chitosan in a laboratory-scale fixed-bed reactor. VM3000 online mercury analyzer was applied to detect the inlet and outlet Hg0 concentrations. The characterizations of the sorbents were analyzed using Fourier transform infra-red spectroscopy. The results indicated...
The structure evolution of maize straw (MS) particles during pyrolysis was studied. The samples were characterized by ultimate analysis, Fourier transform infrared spectroscopy (FTIR), true density measurement and N2 isothermal adsorption/desorption method. The H/C and O/C atomic ratios decreased from 1.59 and 0.84 in the raw MS to 0.21 and 0.33 at 1173 K respectively, which implied that the char...
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