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    Home > Active Ingredient News > Drugs Articles > Factors affecting steam quality of steam boiler

    Factors affecting steam quality of steam boiler

    • Last Update: 2014-08-12
    • Source: Internet
    • Author: User
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    The factors that affect the steam quality of the steam boiler the causes of the steam pollution of the steam boiler are mechanical carrying and dissolving carrying There are water drops in the saturated steam, and the water drops contain impurities, that is, mechanical carrying Some impurities can be directly dissolved by steam, i.e carried by dissolution The source of steam pollution is impurities in boiler feed water The main factors affecting the steam quality of steam boiler are boiler water concentration, boiler load, drum water level and boiler pressure Boiler water concentration: there are many bubbles in the boiling water of the boiler When the bubbles rise out of the water level and break up instantly, they will decompose many small and scattered water drops When the boiler water concentration is low and the boiler water level, load and pressure are normal and stable, these small water droplets are not easy to be taken away by a large amount of steam Because water droplets have a certain weight, when they spill out of the water and rise to a certain height, they will swing back into the water When the water evaporates and concentrates, the salt concentration of the water increases gradually The surface tension of boiler water is also increasing A large number of foam layers will be generated on the surface of boiling water With the increase of the concentration of the boiler water, the thickness of the bubble is also increasing The effective space of the drum is reduced, and the tiny water droplets splashed when the bubble breaks will be easily carried out by the upward flowing steam, so that the quality of the steam will deteriorate, and in serious cases, the phenomenon of steam water co effervescence will occur, and a large amount of boiler water will be carried out Steam boiler load If the load of steam boiler increases, that is to say, the amount of steam passing through each hour per unit steam space in the boiler increases, the rising speed of steam in the drum will increase, and there will be enough energy to bring out the highly dispersed small water droplets on the water surface, so that the quality of steam will deteriorate, especially when the load fluctuates or the operation is overloaded, even if the salt concentration of the boiler water is small, there will be steam water Serious consequences of totem Steam boiler water level: if the water level of the steam boiler is too high, the steam space of the drum will be reduced, and the steam volume passing through the corresponding unit volume space will be increased, the steam flow rate will be increased, and the free separation space of the water drop will be reduced, which will bring out the water drop along with the steam, and also worsen the quality of the steam The fluctuation of the water level will also cause the steam to carry water instantaneously Pressure of steam boiler when the pressure of steam boiler drops suddenly, the volume of steam with the same mass will increase, and the volume of steam passing through the unit space volume will also increase In this way, small water droplets are easy to be taken out and affect the quality of steam "> boiler explosion accident prevention boiler explosion accident prevention boiler shall be designed in strict accordance with the requirements of gb50041-1992 code for design of boiler room for thermal calculation and strength calculation The structural layout shall be reasonable and the material selection shall be qualified When making the boiler, the boiler, The construction shall be carried out according to the drawings to ensure that the quality of the boiler conforms to the national standards The safety accessories on the boiler shall be complete, sensitive and reliable, and shall be inspected and inspected regularly The failed accessories shall be replaced in time The boiler inspection department shall inspect the inside and outside of the boiler regularly, and repair and transform the existing problems in time, Ensure the maintenance quality The user shall strictly abide by the boiler management system, supervision and inspection system and safety operation regulations Strengthen the training and education of staff to ensure the operation safety The user shall have records of boiler operation, water quality test, maintenance and inspection The operator shall strictly abide by the post responsibility system and safety operation regulations, Efforts should be made to improve the operation technology and the level of troubleshooting Prevention of explosion accidents in oil and gas boilers Before boiler ignition, carefully check whether all gas and oil circuits are tight (air leakage), whether the pressure is normal, and whether the newly installed and modified oil and gas pipelines must be blown clean Check whether the blower and induced draft fan have been ventilated for 5-10min before ignition, and analyze the causes after ignition failure, Then ventilate and ignite the boiler according to the ignition procedure For the boiler without the boiler use certificate and annual inspection certificate, the stoker has the right to refuse to order the boiler The enterprise shall arrange the experienced stoker with the stoker operation certificate The stoker personnel shall strengthen the patrol inspection, deal with the problems in time and prevent the flameout Once the flameout is found, the fuel shall be cut off immediately The boiler shall be installed with automatic protection device, It includes automatic ignition, flameout protection, combustion automatic regulation and necessary interlock alarm protection device The stoker personnel can not completely rely on the automatic control device, but also must strictly monitor various instruments and combustion conditions, comprehensively analyze and find out problems in time, and deal with them in time to avoid accidents
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