Steel manufacturing is a complex industrial process, and petroleum coke is an indispensable feedstock for its production. Whether used to produce carbon electrodes for the aluminum industry or graphite electrodes for steel-making, or as fuel for solid fuel power plants that generate electricity, high quality coke guarantees maximum performance, reliability and cost efficiency.
The high calorific value of petroleum coke, combined with the stringent environmental regulations regarding combustion fly ash from steam coal and other fossil fuels, makes it an excellent alternative energy source for generating electricity. However, it is important to note that blending petcoke with coal could potentially lead to a higher concentration of heavy metals in the resulting slag and ash. In addition, it might also lead to the formation of toxic slag compounds and cause corrosion problems in power plant furnaces.
In order to avoid these issues, it is crucial that the correct calcination process is performed on the petcoke. The calcination process removes volatiles from the coke, while at the same time densifying the material and improving its flowability in industrial applications.
Typical calcined petroleum coke is known as “fuel grade” coke. It has a high heat content and low ash content, and it is suitable for use in electric arc furnaces as well as for fuel in power generation plants.
To achieve this, a special type of calcination is used. During this process, the coke is subjected to a very high temperature. The high temperatures decompose the organic molecules in the coke and produce a carbonized form of the material called “petroleum coke” or “coal coke”. The term “fuel grade” refers to this specific type of calcination.
The quality of the calcined coke can be further improved by applying pressure to it during the drying stage. This process is critical, as it prevents unwanted reactions during the drying process and ensures that the calcined coke has a high performance in its industrial applications.
Moreover, this technology also eliminates the need for pulverization which is an expensive and energy-consuming process. As a result, the resulting coke has a high level of purity. Additionally, the IGCC process reduces the content of harmful trace metals such as arsenic, cadmium, chromium and lead in compared to conventional power plant coal-fired boilers. This leads to a more sustainable operation and enables the plant to meet strict environmental legislation. The IGCC process also helps in reducing CO2 emissions.
English
Write a Message