The firing temperature of the tunnel kiln of Sunlets Company is 1150 to 1280, the firing cycle is 1218 hours, and the fuel is natural gas. The annual output of coke oven gas is 60.8 million pieces. The electronic control system, transmission mode, supporting equipment and kiln length of the above products can be designed and constructed according to user requirements.
Kiln body: the main part of the tunnel kiln system, the kiln body is equipped with various air flow inlet and outlet. Kiln conveying equipment: kiln truck and kiln tools. Fuel combustion system: including fuel transmission pipeline, fuel preheating, burner, etc. The heating and combustion of tunnel kiln is mainly heavy oil, light diesel oil, and natural gas gas, the original direct coal burning method is not much used. Oil combustion are equipped with storage tanks and combustion nozzles. Due to the high cost of oil, natural gas and natural gas are still more used, and natural gas is transported from natural gas to the kiln through the natural gas pipeline with a special natural gas nozzle for jet combustion. In addition to the dedicated gas pipeline transmission to the furnace, the tunnel kiln users mostly have their own gas generator for gas production, the gas produced by the gas generator of the gas to the tunnel kiln combustion chamber through the pipeline, through the gas burner for injection combustion.
Ventilation equipment: including smoke exhaust system, air curtain agitation system and cooling system. Its function is to make the air flow in the kiln flow in a certain direction. Tunnel kiln began in 1765, when only burning ceramic glaze color, to 1810, there can be used to burn bricks or pottery, from 1906, only used to burn porcelain tires. The first famous tunnel kiln, which is the Fogillonian style, and after 1910, there were gradually many ways of improvement. Tunnel kiln is generally a long straight-line tunnel, with fixed walls and vaults on both sides and on the top, and a kiln car running on the track laid at the bottom. The combustion equipment is located on the central sides of the tunnel kiln, forming a fixed high-temperature zone-firing zone. The combustion of the high-temperature flue gas flows along the tunnel to the head of the tunnel under the action of the front chimney of the tunnel kiln or the induced draft fan, and gradually preheating the products into the kiln. This section constitutes the pre-tropical of the tunnel kiln. At the end of the tunnel kiln, the products of the back section of the kiln in the tunnel kiln are cooled, and the cold air flows through the products and is heated, and then the dryer is drawn out as the heat source for the dry raw billet. This section constitutes the cooling belt of the tunnel kiln. A bowl containing ceramic products is placed on the trolley, continuously pushed slowly by the pre-tropical entry (by commonly used machinery), while the trolley carrying the finished product is gradually introduced by the exit of the cooling zone (about 1 hour, with a car).