The biomass of rice straw was chosen to prepare the biomass semi-cokes which are characterized by nitrogen adsorption/desorption and Fourier transformation infrared spectroscopy (FT-IR). The influence of biomass semi-cokes activity on pore structure and surface properties of the semi-cokes was investigated. Denitration and mercury removal experiments were carried out in a fixed-bed reactor. The results show that the active biomass semi-cokes have more specific surface area and micro-pore volume than the biomass semi-cokes. It has direct relationship between the NO and mercury adsorption capacity. It is supposed that oxygen-containing functional and basic groups may have dominant effect on the mercury removal from the glue gas.
Coal is absolute dominance in reserves-to-production ratio terms. The development of fuels derived from pyrolysis of low-rank coals is beneficial to lower fossil fuels cost and greenhouse gas emissions. The research proposal briefly summarized energy situation and sustainable development strategy as they were by 2013 at first. Then some recent process in the understanding of the pyrolysis behaviors of coal was reviewed. The influencing factors of atmospheres, additives, and catalysts during coal pyrolysis will be followed to literature. The review paper on pyrolysis characteristics will achieve the development of advanced technologies for the clean and efficient utilization of low-rank coals
An experimental study on co-pyrolysis of biomass and coal was performed in a tubular furnace for comparison of product (tar, water, gas and char) yields and composition. The coal sample selected was Huai Nan bituminous coal (HN), while the biomass used was cotton stalk (CS), and the blending ratio of biomass in mixtures was 0/100, 5/100, 10/100, 20/100, 30/100, and 50/100. The blends of coal and biomass were heated 600°C at 5°C/min, and then kept for 15 min during the pyrolysis. The results indicated that there exist synergetic effects in the co-pyrolysis of biomass and coal. The tar yield was 9.33% higher than the theoretical value at the CS blending ratio of 5/100. The maximum light oil content in tar was 9.67% higher than the theoretical value at the CS blending ratio of 10/100.
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