Coking Waste Heat Boiler
During the process of coking production, the coking plant will produce a lot of waste gas with the temperature of 550-950℃. For further recycle of the waste gas, our company developed two types of horizontal natural circulation waste-tube type boiler of double (single) drum, namely, the boiler of supplemental combustion and the boiler without supplemental combustion. These two types boiler are applicable to the coking industry. The layout of the boiler is classified into two types: the traditional, horizontal type and the mew vertical type, among which the vertical layout of boiler has novel structure and advanced property. It is a new patent of waste heat boiler for the waste gas of coking exclusively developed by our company. The boiler with supplemental combustion utilizes the automatic coke even gas burner. Firstly, the coke oven gas is burned inside or outside of the waste heat boiler, and then mixed with the waste gas of coking; it becomes the high temperature flue gas and enters into the boiler to be converted into rated stream.
The waste gas is exhausted through the boiler slag tube bank, super-heater, convection tube bank and steel pipe coal economizer; enters into the desulfurizing and de-dusting installation at the bottom; and then it is exhausted to the atmosphere by the induced draft fan through the chimney. The solidified slag bank is dispersed from the water-wall tube. The structure of the super-heater is the horizontal suspension structure, with high temperature area and low temperature area. The super-heater is cooled by surface type of cooling or water. The convection bank adopts the in-line arrangement. In the middle of convection bank, there is baffle wall through the multiple baffling; the convection bank can improve the velocity of the flue gas, thus forming the effective horizontal scouring and improving the heat transfer capacity of the convection bank. The coal economizer is the pipe coil bend economizer,...