Coke is a grey, hard, and porous fuel with a high carbon content and few impurities, made by heating coal or oil in the absence of air — a destructive distillation process. It is an important industrial product, used mainly in iron ore smelting, but also as a fuel in stoves and forges when air pollution is a concern.
The unqualified term "coke" usually refers to the product derived from low-ash and low-sulfur bituminous coal by a process called coking. A similar product called petroleum coke, or pet coke, is obtained from crude oil in oil refineries. Coke may also be formed naturally by geologic processes.
Why we produce coke coal?
In Afghanistan, people use coal a lot for warming home and industrial purposes due to lack of electricity and gas and it is unprocessed coal and it produces a lot of pollution.
Our company wants to go green and be environmental friendly that is why we want to produce and sell coke coal to decrease pollution and save the environment.
Carbonization
The final product of briquette carbonization is the acquisition of smokeless fuels and cokes with various properties.
The carbonization of briquette is carried out under high temperatures to produce combustible gases, hydrocarbons, and other liquids, tars, and cokes through the interaction of many chemical and physical properties of the briquettes themselves during carbonization.
Coal types and carbonization conditions affect the properties and yield of tar and the physical properties and reactivity of coke
The carbonization of briquette is carried out under high temperatures to produce combustible gases, hydrocarbons, and other liquids, tars, and cokes through the interaction of many chemical and physical properties of the briquettes themselves during carbonization.
Coal types and carbonization conditions affect the properties and yield of tar and the physical properties and reactivity of coke
Carbonization temperature and carbonized product
The purpose of high-temperature carbonization of briquette is to obtain coke and by-products such as coal gas and coal tar.
The briquette is carbonized at a high temperature of 950-1100 degrees Celsius, and a series of changes occur in the briquette during the heating process in the carbonization kiln.
After the briquette is heated, the thermal decomposition begins, and the volatile matter escapes. When the temperature of the briquette reaches 300 degrees Celsius, the thermal decomposition products increase, mainly CO and CO2.
The temperature rises again, and three or more alkanes and alkenes appear.
When the temperature reaches 400-600 degrees Celsius, the decomposition reaches the most intense stage, and then slowly slows down, so the degassing of the briquette has an apex process.
When the briquette temperature is below 600 degrees Celsius, the degassed product is a primary product, and the quantity and variety of the primary products are related to the properties of the coal.
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