top of page
What is coal?
Coal is a black or brown-black sedimentary rock formed in rock layers. Coal is composed of carbon, sulfur, hydrogen, nitrogen, and oxygen. Over millions of years plants decays into peat under heat and pressure of laying deep underground transforms it into coal. The forms of coal shows change over the time, temperature, and pressure. Coal is mainly used for being burned for energy or heat primarily on the industries such as Iron and steel, food, paper, cement, mining, chemical, textile and many other.
Coalification is described as the physical and chemical changes that progress from peat to coal. Coals are classified and defined according to their ranks. Ranks are categorized by recognizable changes in parameters of coal. But coal cannot be distinguished solely from their physical appearances. Coal analysis should be made to distinguish between coal ranks.
Peat – It is not yet coal.
Lignite – It is the lowest rank of coal. Lignite coals are mainly used as fuel for electric power generation.
Sub-bituminous– This type of coal is used generally as fuel for electric power-steam generation.
Bituminous– It is a dense sedimentary rock. Bituminous coal is used also for heat and power applications in manufacturing and to generate coke.
Anthracite– It is the highest rank of coal. Anthracite coals are harder and used primarily for heating due to higher calorific values.
Graphite- It is no longer coal. Graphite is difficult to ignite and not commonly used as fuel.
Why is coal analysis required?
Coal is found highly heterogeneous in nature. To maintain coal without any change in its properties, mined coal need to be sorted, measured, analyzed and blended. So, in order to accurately predict coal’s behavior and properties during application, analytical testing should be performed. Coal analyses should be sufficiently accurate and precise to avoid economic consequences when used in very large amounts. To obtain repeatable and reproducible results, coal analysis should follow international standards and guidelines. These coal analyses should be made repeatedly by seller and buyer to guaranty the precise quality of coal. You can always contact us for detailed information about caol analysis and coal analysis instruments.
Calorific Value of Coal
Coal calorific value is analyzed and measured for almost all coal samples. Calorimeter is used to determine calorific value of coal, especially bomb calorimeters are globally the most commonly used coal calorific value analysis instrument. Calorific value is the measure of coal's heating ability. The amount of coal to produce desired amount of heat is estimated using the calorific value of coal. This procedure is necessary to obtain energy most efficiently from the coal usage. Also, calorific value is used to determine the coal rank and quality according to international classifications.
If you want to review more details about coal calorific value and the use of bomb calorimeter, you can visit our blog page. You can always contact us for all questions about coal analysers and bomb calorimeters.
Bomb calorimeter is used to determine the calorific value of many solid and liquid fuels like coal, coke, biofuel, solid waste, oil etc. . The calorimeter analyzer is also known as a coal analyzer or coal calorie measuring device, as it is frequently used in coal analysis.
During the use of the calorimeter analyzer, the coal for which caloric value is desired is first prepared in appropriate sizes and made suitable for analysis. Then, weighing is carried out in the crucible so that it is close to 1 g from the coal sample. The coal in the crucible is placed in the bomb (decomposition vessel), the ignition wire is connected and the bomb is closed and made ready for analysis. The calorimeter bomb placed in the calorimeter analyzer is ignited and the burning process of the coal is started. In automatic calorimeter and semi-automatic calorimeter analysis devices, the processes after the process is started are carried out by the system. Basically, the heat released from the calorimeter bomb increases the temperature of the water, and the temperature change in the water is automatically measured by the calorimeter analyzer and the calorific value of the coal is calculated by the system.
With our Calorimeter IC210 model, which we have developed as Debye Technic, you can easily perform your coal calorie measurement processes. Our calorimeter IC210 model; With its automatic water filling, automatic ignition and error detection systems, it facilitates the operations of the users and thus provides speed and precision in calorie measurement processes. Unlike other coal analyzers, the Calorimeter IC210 enables you to measure calories without being affected by outdoor temperatures, thanks to the water circulator with cooler and heater that can work with the system.
With the calorimeter IC210, you can perform analyzes in accordance with ISO 1928, ISO 18125, ISO 9831, ISO 1716, ASTM D5865, ASTM D5468, ASTM D4809, ASTM D240, ASTM E711, DIN 51 900 standards.
Calorimeter IC210 is a coal calorie meter you should check out with its affordable price and innovative features. You can contact us for detailed information about coal calorie measuring device prices and features. In addition to the calorimeter analyzer of our own production, we also offer all kinds of consultancy and support about other coal analyzers.
You can improve your systems even if you don't use our Calorimeter IC210 device, especially with our detailed application notes about coal analysis and our coal calorie value recalculation application.
You can contact us at info@debyetechnic for information about the prices of coal calorie measuring devices.
What is coal
bottom of page