What is the significance of coal analysis?

Coal analysis techniques are specific analytical methods designed to measure the particular physical and chemical properties of coals. These methods are used primarily to determine the suitability of coal for coking, power generation or for iron ore smelting in the manufacture of steel.

What is the significance of proximate and ultimate analysis?

The key difference between proximate and ultimate analysis of coal is that proximate analysis is the technique used to analyze the moisture content, ash content and fixed carbon of coal whereas ultimate analysis is the technique used to analyze the chemical composition of coal.

What is coal ultimate analysis?

The ultimate analysis of coal involves determination of the weight percent carbon as well as sulfur, nitrogen, and oxygen (usually estimated by difference). Trace elements that occur in coal are typically included as a part of the ultimate analysis.

What does an ultimate analysis consist of?

Ultimate analysis is defined as the determination of carbon, hydrogen, nitrogen and sulfur in a wide type of organic and inorganic samples, both solid and liquid.

Why ultimate analysis is also known as elemental analysis?

Ultimate analysis is also known as elemental analysis, it is the method to determine the Carbon,Hydrogen,Nitrogen,Sulphur and Oxygen content present in solid fuel.

What is the significance of presence of moisture and volatile matter in coal?

Along with moisture and ash contents, the percentage of volatile matter in a coal sample is needed to calculate the fixed-carbon content of a coal. Many electric utilities prefer coals within a narrow range of volatile matter (25 to 35 percent) for optimal flame stability in the boiler (Thomas, 1992).

What is the significance of moisture in proximate analysis?

Moisture is used to define low-rank coals in some rank classification systems, and is an important criteria for determining coal grade in low-rank lignite coals.

What is ultimate analysis of solid waste?

Ultimate analysis informs about the amount of carbon (C), hydrogen (H), nitrogen (N), sulphur (S) and oxygen (O). Also, thermal characteristics such as heating value, in particular the higher heating value (HHV), are a key factor for the design of WTE plants (Kalogirou, 2017).

What is the importance of proximate analysis of food?

The Importance of Proximate Analysis “Proximate analysis” is of key commercial concern as food-manufacturing companies need to ensure that their products meet the appropriate laws and legal declaration requirements as well as the safety aspects of the end products when released to the end consumer.

Which method is used for ultimate analysis of nitrogen in coal sample?

Explanation: In ultimate analysis of coal, Nitrogen is determined by Kjeldahl method. The method involves 3 steps which are digestion, distillation and titration. In digestion, sample is digested in boiling concentrated sulphuric acid in presence of catalyst and ammonium sulphate is obtained.

What do you understand by ultimate and proximate analysis of biomass?

PROXIMATE AND ULTIMATE ANALYSES The “ultimate” analysis” gives the composition of the biomass in wt\% of carbon, hydrogen and oxygen (the major components) as well as sulfur and nitrogen (if any). The Proximate Analysis (D-3175), gives the fixed carbon, volatile and ash content of biomass.

What is the significance of moisture content of coal?

Moisture absorbs heat, so high moisture content in coal reduces the relative efficiency of heating when a coal is combusted. This is why low-rank, high-moisture coals have lower calorific values (Btu/lb) than high-rank, low-moisture coals.