Advanced Materials Research Vols. 781-784

Abstract: The phase equilibira and surface tensions of N-methyldiethanolamine (MDEA), diethanolamine (DEA) and their aqueous solutions were investigated by using the perturbed-chain statistical associating fluid theory (PC-SAFT) and density-gradient theory (DGT). The molecular parameters and influence parameter were respectively regressed by fitting to the experimental data of phase equilibria and surface tensions of pure fluids. With the molecular parameters and influence parameter as input, the surface tensions of MDEA, DEA and their aqueous solutions were correlated satisfactorily.

Abstract: China's greenhouse gas emission is very critical, how to develop a low-carbon economy, build a resource-saved and environment-friendly society become the key problems. This paper study on the key issues which influence the low carbon economy, explore new cooperation mechanisms among network enterprises, and construct a green economic develop model.

Abstract: Composite membranes comprised of a thin poly (N,N-dimethylaminoethyl methacrylate) layer and a microporous polysulfone substrate were prepared by coating method. The effects of parameters involved in the membrane preparation procedure on the permselectivity of the resulting membrane were investigated by a factorial design. The permeability of the membrane to N₂, CH₄ and CO₂ was tested and the membrane showed a high permselectivity to CO₂.

Abstract: Regional synergy reduction of carbon emissions is an effective means of reducing the total emission.In order to encourage each region to join reduction mechanism,first of all, we should set a reasonable plan about the cost of cooperative emission reduction.This thesis is based on the way of cooperative game to analysis the cost allocation problem of cooperative reduction in the area of Beijing-Tianjin-Hebei,and discuss the rational behavior of cooperative reduction in each region. This paper uses Shapley value method to find the solution of the cooperation model, the example shows that the cooperation mechanism is reasonable,so as to verify the feasibility of the regional collaborative carbon emission reduction.And this paper could provide some policy suggestions for regional carbon emission reduction in our country.

Abstract: Carbon dioxide (CO₂) can be electrochemically reduced to useful products under mild condition. In recent years, increased attempts have been devoted to use ionic liquid (IL) as the solvents, electrolytes and catalysts for CO₂ reduction. However, owing to the high viscosity of ILs, CO₂ diffusion in ILs is restrained, lead to low current density of CO₂ reduction. To overcome this problem, in present work, we used methanol as the organic solvent to dilute 1-Ethyl-3-Methylimidazolium BF₄ ([EmiBF₄), an commonly used IL in electrochemistry, the obtained [BmiBF₄/methanol solution have many unique properties, such as low viscosity, high ionic conductivity, high CO₂ solubility and low cost. The current density of CO₂ reduction reached 14.2 mA/cm² at-1.95V (vs SCE) on Ag electrode. Electrochemical reduction of CO₂ in [BmiBF₄/methanol solution provides a hopeful technique for CO₂ recycling utilization and renewable electrical energy storage.

Abstract: Explains the principle and reaction mechanism of desulfurization catalyst. Introduces the test applying desulfurization catalyst in WFGD (wet flue gas desulfurization) system of 320MW generating units operating in thermal power plant. Desulfurization efficiency is improved significantly by using desulfurization catalyst of 100 μ g/g to 600 μ g/g concentrations. To save electricity, stopping the top level slurry pump is the priority.

Abstract: In this paper, the problem of high calcium carbonate content of desulfurization gypsum using limestone - gypsum wet desulphurization technology in coal-fired power plants questions, recommendations in running process from the control of absorption tower pH, lime stone powder, lime powder fineness activity to solve the above problems.

Abstract: NO_x emission in coke combustion with and without iron oxides were investigated in a fixed bed quartz reactor. Effects of Fe₂O₃ and Fe₃O₄ loading on NO_x emission were discussed. NO_x emission was also studied by simulating test with recycling flue gas with Fe₃O₄ modified coke as fuel. The results showed that Fe₃O₄ was catalytically active in NO_x reduction. In coke combustion experiments, NO_x emission decreased with increasing Fe₃O₄ loading up to 2.0wt%, while simulation tests showed that NO_x emission decreased by 19.84% with 2.0wt% Fe₃O₄ modified coke as fuel.

Abstract: Effects of CaO, MgO, Fe₂O₃ and sintering ores on NO reduction by CO was investigated with or without oxygen present. The NO reduction reaction was carried out in a fixed bed quartz reactor with CaO, MgO, Fe₂O₃ and sintering ore as bed materials under the temperature range from 600°C to 1000°C. The results showed that the order of the catalytic effect on NO reduction by CO was, CaO > sintered ores > Fe₂O₃ > MgO. Under the action of the sintered ores, the NO conversion was over 90% with 1.2% CO. The presence of oxygen didnt favor the NO reduction by CO.

Abstract: NO_x emission in coke combustion with and without La₂O₃ was investigated in a fixed bed quartz reactor. The effects of La₂O₃ loading and lanthanum oxide particle size on NO_x emission were discussed. NO_x emission was also studied by sintering pot tests with lanthanum oxide modified coke as sintering fuel. The results showed that lanthanum oxide was catalytically active in promoting not only coke combustion but also NO_x reduction. In coke combustion experiments, NO_x and CO emission decreased with increasing lanthanum oxide loading up to 2.0wt% and decreasing lanthanum oxide particle size (28~150μm).