Background: Petroleum coke is a by-product of the refining process. Its fuel has high calorific value and low price. Shaking petroleum coke can bring huge economic benefits to users and is also an effective means to improve energy utilization. However, after blending petroleum coke, the combustion conditions of the pulverized coal boiler become more complex.      

Introduction to the results: Petroleum coke has volatile matter (5 - 10%), carbon content of about 85%, and high calorific value (~31000kj/kg). It is a cheap fuel resource that can be utilized. By blending a certain proportion of petroleum coke in pulverized coal boilers, this cheap resource can not only be utilized, but also boiler fly ash has a certain sulfur fixation effect, which is also beneficial to reducing SO2 emission pollution from burning coke. Petroleum coke has the characteristics of high carbon and extremely difficult to burn out, high material viscosity, poor fluidity and grindability. During blending, it will also bring some problems to various production links of power station boiler units. This technology can ensure the safety and economy of power station boilers operating under the condition of blending petroleum coke.  The system technologies include: optimization technology for combustion of coal and petroleum coke mixed powder; flue gas corrosion prevention technology for co-burning of coal and petroleum coke; electrostatic dust collection technology for co-burning of coal and petroleum coke; and preparation and transportation technology for coal and petroleum coke mixed powder.