Hot air boiler, a thermal power machine, began to be widely used in China in the late 1970s. It has become a replacement product of electric heat source and traditional steam power heat source in many industries. There are many kinds of hot blast stoves with complete series. The hot blast stoves can be divided into manual burning and machine burning by means of coal feeding, and can be divided into coal, oil and gas stoves by fuel type.
The chain grate energy-saving hot blast furnace is a new type of energy-saving hot blast furnace. The furnace is equipped with energy-saving front and rear arches, and the rear of the furnace is equipped with a cyclone burning chamber to ensure full combustion of fuel and low heat loss. The principle of the oil fired hot blast stove is that coal is sent into the furnace through the grate, air is sent by the fan, and through the coal seam, it is fully burned with the coal on the chain and produces high-temperature smoke. The high-temperature flame enters the secondary combustion chamber and the cyclone burn out chamber for combustion again, so that the blackness of the hot blast stove smoke is lower than "Ringmann 1". The chain grate energy-saving hot blast stove has stable heating, high automation, safety and reliability.
The hot blast stove of iron making blast furnace is used to heat the blast to the required temperature, so as to improve the benefits and efficiency of the blast furnace; It works according to the principle of "heat storage". The oil fired hot blast stove burns gas in the combustion chamber. High temperature waste gas passes through the checker bricks and makes them accumulate heat. When the checker bricks are fully heated, the hot blast stove can be changed to air supply. At this time, the relevant combustion valves are closed, the air supply valves are opened, and the cold air is heated and sent out through the checker bricks. When the blast furnace is equipped with 3-4 hot stoves, two or three hot stoves are heated, and one is supplied with air. When the blast furnace is replaced in turn, two hot stoves are heated.
