Advanced Materials Research Vols. 634-638

Abstract: After a research on the existing HPF process, this paper presented a new pressurized desulfurization process, which solved low desulfurization efficiency of HPF process and applied a more simple process. The new process was simulated and optimized on the process simulation software, the operating factors of tow columns such as flow of desulfurization solution, desulfurization tower pressure, stripping tower cold-hot feed match, flow of sour gas, side withdrawing position, are studied, the best operating condition was found. The results of simulation were in good agreement with the practice.

Abstract: Firstly a GM(1,1) is built to get the dynamic base line for the coal bed methane dynamic productivity of coal mine area. Secondly on the basis of the GM(1,1), Markov chain is applied to achieve state transition probability matrix. Thirdly the coal bed methane dynamic productivity of coal mine area interval is forecasted and analyzed in the form of probability by the system state classification, the calculation of the residue between true value and model fitting value and the standardization of deviation of the residue. It's proved in theory and practice that the forecast results not only are more reliable but also can help the decision maker with grasping the coal bed methane dynamic productivity of coal mine area development tendency in general and making proper decision. Results show that the Grey Markov Model has higher accuracy than that of GM(1,1) model.

Abstract: The research of all kinds of factors is put up on the inner coking of coal in the plasma reactor during the processing of pyrolysis of coal to acetylene, includ cooking phenomenon, coal of property, coal of grain degree, enter anticipate a speed , power and equip structure. In the arc plasma jet, different kind of coal has different coking character. The aromatics, colloids, asphaltene and carbenes are the precursors of the cokes.The mostly reasons of coking in the plasma reaction equipment are the particle size, the feeding velocity, the power of plasma and the structure of equipment. With the increasing of feeding velocity, the coking of system becomes worse. When the particle size is less than 80~100 mesh, the system will not produce cokes. When the particle size is about 100~120 mesh, the system will begin to produce cokes. When the particle size is larger than 140 mesh, the system will produce a lot of cokes.With the increasing of plasma power, the speed of coking will become smaller.

Abstract: Beijing has long attached great importance to the development of renewable energy in its rural areas. On the basis of an analysis of resources, history, and status, this study presents a strategy for developing renewable energy in rural Beijing. Namely, for Beijing to become a high-level demonstration zone for renewable energy use, it must grasp two key development links (renewable energy and energy saving), focus on three strategic emphases (solar energy heat utilization, biomass gas, and energy-saving housing renovation), and enforce six construction elements (e.g., product research and development, technology upgrades, demonstration zones, and service systems). We also introduce concrete measures for promoting the development of rural renewable energy in Beijing in terms of funds, markets, policies, technologies, and services.

Abstract: In this paper, application of dividing wall column (DWC) to chlorobenzene distillation was studied. Simulation using Aspen plus software was done to compare the traditional two tower process with new process based on DWC. The results show that, with the same feed parameters, the DWC processes can achieve identical separation effect as the two tower process with an energy saving of 21%, and capital investment and space saving can also be gained. In addition, only a reboiler is need in DWC process, so residence time of chlorobenzene, polychlorobenzene, etc inside high temperature region can be reduced, so can to avoid heat decomposition of these thermosensitive substances to a great extent.

Abstract: This paper elaborated the technological route of preparing higher alcohols using blast furnace gas (BFG) and coke oven gas (COG) as raw materials. An example was set up a model of environmental and economic evaluation on reutilization of gas as resource．This paper evaluates and analyses as well the efficiency of emission reduction and its economy in terms of reutilization of BFG. The result shows that preparation of higher alcohols using BFG can not only achieve good carbon emission reduction effect, but also get a good economic value.

Abstract: The effect of various fuel injection advance angles on the emissions of an electronically controlled, high pressure, common rail, turbocharged GW4D20 diesel engine fuelled with different pistacia chinensis bunge seed biodiesel/diesel blends has been experimentally investigated. The results indicate that brake specific fuel consumption reduces with the increasing of fuel injection advance angle, and the BSFC of blends is higher than diesel. At 25% load, CO and THC are significantly reduced compared with higher load. The CO emission increases with the increment of fuel injection advance angle. At 75% load, the CO of B10 is lowest, B20 highest. At the same speed, NOx increases with increment of fuel injection advance angle for diesel and biodiesel blends dramatically. However, NOx of blends and diesel are deteriorated at high load, but there are no obvious differences among them.

Abstract: Five different solvents are adopted to abstract the raw coal in Inner Mongolia. Meanwhile, different solvent-residues are tested by smart testing machine about their ash fusing point and the residues are analyzed by X-ray diffraction (XRD) .As is shown that the means of solvent-abstraction can effectively alter the coal ash fusing point in Inner Mongolia. Besides, it can improve the calorific capacity of the coal. Thus, it can improve the thermal property of coal, it can reduce the pollution of the environment.

Abstract: In this paper, we use the research methods of sintering cup.On the basis of the determination of solid fuel particle size composition and the distribution in the mixture. During the sintering process, respectively, 5min, 10min, 15min, 20min interrupt the test, by dectecting the distribution of solid fuel in the mixture to study the migration phenomenon of solid fuel during the sintering process. The results showed that: during the sintering process, the main migration of the fuel is the migration of fine particles, including the fuel migration of 0.25-0.5mm grain size, part of the 0.5-1mm grain size and a small amount of-0.25mm grain size,but most of the fuel migrated will be re-adsorbed, about 0.11% of the fuel with the air flow through the material layer, the migration of fuel to ease the state of segregation in the vertical direction along the material layer, so that cause actual participation in the combustion of the fuel content in line along the height direction of the material layer.

Abstract: For the requirements of nitric oxide (NOx) and sulfur dioxide (SO2) removal process in coal-fired power plant, a new non-thermal plasma system combined with catalyst was developed to investigate the effect of parameters such as temperature, atmosphere, residence time, and additives (NH3 and methanol) on NOx and SO2 conversion rate. The results indicated that the new system could greatly promote the NOx conversion rate while it only had a slight influence on the SO2 oxidization rate. Meanwhile, high temperature suppressed the NO oxidization, and promoted the SO2 oxidation. The long residence time was beneficial to the NOx and SO2 oxidization. In the absence of water, the additive of NH3 can improve NO, NOx, and SO2 oxidization rate due to the reactions between NH3 and NOx, or SO2. Contrary to NH3, methonal had a negative effect on NOx and SO2 oxidization.