| Solid Medical Waste (SMW) come from the refuse in the process of medical diagnose and therapy. There are bacteria, virus, vermin and other harmful substance in the wastes. If not being disposed timely, they will pollute circumstance severely. Because of not being paid enough attention, medical wastes have been a cause of unhealthy of people. At present, there are rotating kiln incinerator and flake incinerator for municipal solid waste, etc., but there isn't well-rounded combustion technology for solid medical waste. The Circulating Fluidized Bed Combustion (CFBC) is a high efficiency and low pollution technology with many merits, such as, the fuel and desulfurization circulated many times, intensely turbulent gas-solid flow, low NOX, 90% desulfurization efficiency, high combustion efficiency nearly coal powder boiler, and the widely flexibility fuel, etc. So, the high combustion stability and low pollution would exist with CFBC for SMW, and the new energy could be used. The research of CFBC for burning solid medical waste has important academic significance and engineering value.Moreover, until present, there hasn't studied for the dryness, pyrogenation process character and element form for SMW, and the gas-solid flow character, heat transfer feature, combustion character, and reaction mechanism, the relation between combustion (structure) parameters and products haven't also been properly confirmed, all of these would effect to apply for SMW in CFBC(SMW-CFBC). Therefore, combined the actual character of SMW, numerical and experiment investigation on gas-solid flow and combustion character for SMW-CFBC, to use news energy, which will enrich and promote the academic researches, and carry forward the technological innovations and applications to explore and clarify the flow and combustion mechanics of SMW-CFBC gas-solid multiphase flow.This paper is in allusion to the flow and combustion mechanics and application of the SMW-CFBC gas-solid multiphase flow and SMW character. It is firstly to more deeply investigate the components, element, dryness, pyrogenation process character of SMW, and the transient temperature feature of SMW lump has also gotten. The oil ignition technology for MSW-CFBC has finished. The gas-solid flow, combustion, temperature, and products character are carrying on. The optimum SMW-CFBC hasbeen designed and manufactured. And the same time, the experiment is carried out and the difference between the experiment and simulation results is analyzed.For the fuel character of SMW to CFBC, To more deeply investigate the components, element, dryness, pyrogenation process character of SMW, and the transient temperature feature of SMW lump have finished for the first time. The organic compound is 71%, moisture is 26～35％, ash is 0.9～8％, heat value is 11447~14724kJ/kg. The sequence of factor to influence the dryness is temperature, drying time, thickness, and air velocity, the temperature of initial separating out volatile is 350℃, and the temperature of end separating out volatile is 700℃ for SMW. The ball SMW lump, smaller feature parameter and turning can realized fast promoting temperature of SMW. The pyrogenation relationship equation among staying time, temperature and the rate of volatile is acquired.How to ignition to SMW in CFB, author has developed the oil atomization nozzle at low pressure with micro-expanded tangent channels (Chinese Patent, No. ZL.022422765) for the first time. According to our three-dimensional flow model of the nozzle, the k-(/RNG model and SIMPLE method are applied, and the fluid flow is numerically simulated and its structure character is optimized (n=3～4,L≤2.5,θ=5～6°,a/b≈1.2 and Rx/rb≥2.5). The nozzle has better atomization character at the low pressure. The working pressure, atomized effect, saving oil, ejecting rigidity, combustion efficiency and stability are more advanced to the other oil nozzle. The nozzle has applied in SMW-CFBC. On the bases, the different shape of dense area of SMW-CFBC is presented, the segments 3-D mathematical mo...
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