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    生物质热风炉燃烧调整的方法有哪些

    2018-11-20 09:27:51 无锡盛发地坪科技有限公司 阅读

    1.生物质在振动炉排上成都收账燃烧过程.生物质成都找人公司燃烧通常可以分为三个阶段,即预热起燃阶段、挥发分燃烧阶段、炭燃烧阶段。生物质在振动炉排上成都收账燃烧过程分为预热干燥区、燃烧区和燃尽区,这可以与振动炉排收账高、中和低端相对应。根据各区成都找人公司燃烧特点,各区需要的风量有差别,预热干燥区和燃尽区的风量少一些,燃烧区的风量要大一些。燃料颗粒在振动炉排热风炉中燃烧可以分为两种类型:颗粒大的在炉排上燃烧,在气力播撒的过程中,颗粒特别小的在炉排上部空间发生悬浮燃烧。

    1. The combustion process of biomass on vibrating grate. The combustion of biomass can be divided into three stages: preheating ignition stage, volatile combustion stage and carbon combustion stage. The combustion process of biomass on the vibrating grate can be divided into preheating and drying zone, combustion zone and burnout zone, which can correspond to the high, middle and low end of the vibrating grate. According to the combustion characteristics of each zone, the air volume needed in each zone is different. The air volume in the preheating drying zone and the burnout zone is less, and the air volume in the combustion zone is larger. The combustion of fuel particles in the hot blast stove with vibrating grate can be divided into two types: the combustion of large particles on the grate and the suspension combustion of small particles in the upper space of the grate during pneumatic seeding. 2.生物质在炉排上完全燃烧的条件

    2. the condition of biomass burning completely on the grate.

    炉内良好燃烧的标志就是在炉内不结渣的前提下,尽可能接近完全燃烧,同时保证较快的燃烧速度,得到最高的燃烧效率。

    The sign of good combustion in the furnace is to approach complete combustion as close as possible without slagging in the furnace, while ensuring faster combustion speed and achieving the highest combustion efficiency.

    (1)供应充足而有合适的空气量

    (1) adequate supply and adequate air volume.

    如果过量空气系数过小,即空气量供应不足,会增大固体不完全燃烧热损失q4和可燃气体不完全燃烧热损失q3,使燃烧效率降低;如果过量空气系数过大,则会降低炉膛温度,增加不完全燃烧热损失。最佳的过量空气系数使q2+q3+q4之和为最小值。

    If the excess air coefficient is too small, that is, insufficient air supply, it will increase the heat loss Q4 of solid incomplete combustion and the heat loss Q3 of combustible gas incomplete combustion, which will reduce the combustion efficiency; if the excess air coefficient is too large, it will reduce the furnace temperature and increase the heat loss of incomplete combustion. The best excess air coefficient makes the sum of q2+q3+q4 minimum.

    (2)适当提高炉温

    (2) raise the furnace temperature appropriately.

    根据阿累尼乌斯定律,燃烧反应速度与温度成指数关系。在保证炉膛不结渣的前提下,尽量提高炉膛温度。

    According to Arrhenius's law, the rate of combustion reaction is exponentially related to temperature. In order to ensure furnace hearth not slagging, raise furnace temperature as much as possible.

    (3)炉膛内良好的扰动和混合

    (3) good disturbance and mixing in furnace.

    在着火和燃烧阶段,要保证空气和燃料的充分混合,在燃尽阶段,要加强扰动混合。

    In the stage of ignition and combustion, the full mixing of air and fuel should be ensured, and in the stage of burnout, the disturbance mixing should be strengthened.

    (4)燃料在炉排上和炉膛中有足够的停留时间

    (4) fuel has sufficient residence time in the grate and in the furnace.

    (5)保持合理的火焰前沿位置。火焰前沿应该位于高端炉排与中部炉排的之间区域,火焰在炉排上的充满度好。

    (5) maintain a reasonable position of the flame front. The flame front should be located between the high-end grate and the middle grate, and the flame fills well on the grate.



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