燃气锅炉多烟道的布置方式
    2017-9-22 17:18:20  文章来源:http://www.jnlzsb.com

    1:水份影响:水分大,炉膛内燃烧温度降低,炉内辐射吸热量减少,山东燃气锅炉烟气量增加,对流受热面吸热量增加。因此,要求多不值对流受热面面积。同时,水份大,要求热空气温度高,同时需要布置更多的空气预热器受热面。

    1: water influence: water is large, the combustion temperature in the furnace is lower, the radiation heat absorbed in the furnace is reduced, the amount of flue gas is increased, and the heat absorbed by the convection heating surface is increased. Therefore, it is not worth the area of convection heating surface. At the same time, large moisture, requiring hot air temperature, and need to arrange more air preheater heating surface.

    2:发热量影响:发热量低,理论燃烧温度低。为保证锅炉设计参数和容量,燃料消耗量多,炉膛出口眼纹升高,烟气量变大,从而使各对流受热面中的传热温压和烟气流速均增加,导致对流受热面吸热量加大。因此,锅炉各受热面面积应随之相应改变。

    2: calorific effect: calorific value is low, theory combustion temperature is low. In order to ensure the boiler design parameters and capacity, fuel consumption, furnace exit eye increased, flue gas quantity, so that the convection heating surface in the heat transfer temperature and pressure and velocity of flue gas was increased, resulting in increased heat convection heating surface. Therefore, the area of the heating surface of the boiler should be changed accordingly.

    3:灰分影响:灰分多,会加剧对流受热面的磨损,在设计对流受热面时,应选用较低的烟速或其他减磨措施。灰份熔点低时,应选用较低的炉膛截面热强度、燃烧器区域壁面热强度和炉膛容积热强度,以保证炉膛内及其后面对流受热面不结渣。对于锅炉灰熔点太低的燃料,还应采用液态排渣的燃烧方式。为了除灰,有时还采用多烟道的布置方式。

    3: ash effect: ash content will exacerbate convection heating surface wear, in the design of convection heating surface, should choose lower smoke rate or other measures to reduce wear. The ash melting point is low, should choose the lower furnace cross-section heat intensity, burner wall thermal strength and heat strength of furnace volume, to ensure that the furnace and behind the convection heating surface without slagging. For the fuel with too low ash melting point, a liquid slagging method should be adopted. In order to remove ash, sometimes a multi flue arrangement is adopted.

    山东燃气锅炉多少钱

    4:挥发份影响:燃气锅炉的煤燃料挥发份低,不容易着火和烧尽,炉膛容积热强度应该取得小一些,使炉膛容积大些。火焰长、炉膛应高一些。

    4: the effect of volatile gas boiler fuel: coal with low volatile content, is not easy to catch fire and burn, furnace heat intensity should be smaller, the larger the volume. The flame length should be higher.

    为了保证燃料稳定着火,在布置燃烧器的水冷壁面上敷设卫燃带,减少燃烧器区域水冷壁的吸热量,以保持其高温,采用热风送粉和较高的热空气温度,所以布置较多的空气预热器受热面。为了保证燃料燃尽,要求较大的过量空气系数,使炉内燃烧温度降低和烟气量增加,所以应增加对流受热面的配置。

    In order to ensure the stability of fuel ignition, ignition belt in the laying of water wall burners arranged on the surface, reduce the heat quantity of the burner water wall, in order to maintain the high temperature, the temperature of hot air with hot powder and high, so the air preheater more arrangement of heating surface. In order to ensure the burnout of the fuel, a larger excess air coefficient is required to reduce the combustion temperature and increase the amount of flue gas. Therefore, the convection heating surface should be increased.

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