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  • What are the shutdown steps for the coal-fired steam boiler? 2023-04-27
    Proper shutdown procedures are crucial for ensuring the safe and efficient operation of a coal-fired steam boiler. The following steps should be followed when shutting down a coal-fired steam boiler: 1. Reduce the load: Before shutting down the boiler, the load should be reduced to its minimum level. This will help to prevent sudden drops in pressure and temperature, which could cause damage to the boiler and its components. 2. Shut off the fuel supply: The fuel supply to the boiler should be ...
  • What is the function of the rear arch for coal fired boilers? 2023-03-20
    When it comes to coal fired boilers, the rear arch plays a critical role in the combustion process. The main function of the rear arch is to keep the fuel particles in suspension and prevent them from falling into the ash hopper, which can lead to incomplete combustion and decreased efficiency.   At ZOZEN, we understand the importance of a well-designed rear arch for coal fired boilers. That's why our coal fired boilers are equipped with advanced rear arch designs that enhance the combust...
  • What is the coal consumption of one set of 10tph coal-fired steam boiler? 2023-01-28
    The coal-fired boiler uses coal as fuel. The consumption of coal is a key factor to measure the efficiency of boilers. Under the same condition, the coal-fired boiler with less coal consumption can save more costs for enterprises. However, the coal consumption of coal-fired boilers is related to many factors, such as the efficiency of the boiler, the calorific value of fuel coal and the degree of coal combustion.
  • Why is the chain grate stuck and stopped during the operation of coal-fired boilers? 2023-01-28
    Question details (Performance) : 1. The vibrating coal grate stops running totally or intermittently. 2. The current of vibrating coal grate motor rises abnormally. 3. The safety clutch of transmission machine of grate or safety pin is broken.   Answer: cause of the problem: Boiler’s vibrating coal grate is a rotating combustion equipment, due to the bad working conditions, stuck stalling is easily happened and grate failure happens in daily application and ...
  • What is the main difference between the structural diagram of vertical and horizontal coal hot water boilers? 2022-06-17
    It can be found that there are the following differences between vertical coal-fired hot water boiler and horizontal coal-fired hot water boiler by analyzing the structural diagram of vertical coal-fired hot water boiler:   The heat transfer of vertical coal-fired hot water boiler and horizontal coal-fired hot water boiler The exhaust gas flow produced by the vertical coal-fired hot water boiler flows vertically to the heating surface from top to bottom, and the exhaust gas temperatu...
  • What is the function of coal-fired boiler economizer? 2022-04-01
    Coal-fired boiler economizer, as its name implies, is a boiler device to save energy. The structure of coal-fired boiler economizer is relatively simple, which is mainly composed of all stainless steel 304 frame and stainless steel spiral finned tubes, all of which are arranged in a certain order. According to the power, size and price of the boiler, the boiler economizer adopts different materials such as stainless steel and ND steel. According to the medium, coal-fired boiler economizer is ma...
  • What are the advantages of the CFB boilers? 2021-09-10
    As a new mature high-efficiency and low-pollution clean coal technology, circulating fluidized bed combustion (CFBC) technology has many advantages that other combustion methods do not have. Circulating fluidized bed combustion is low-temperature combustion, so the NOx emission is much lower than that of pulverized coal furnace, only 200ppm.
  • What kind of coal is good for chain boiler? 2021-08-27
    Chain grate has certain selectivity for coal types, and soft coal with volatile content above 15%, ash melting point above 1250℃, moderate particle size and calorific value above 18800~21000kJ/kg is more suitable.
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