What is volatile matter and what is its significance?

Volatile matter is an unstable material. Volatile matter tends to not remain in one state and will rapidly transition to another state, or vaporize, when the right conditions are met. Volatile matter has its volatility determined not by temperature but more so by the vapor pressure required to initiate a phase change.

What is the effect of volatile matter in the combustion process?

High volatile matter in the fuel is undesirable as it produces more tar, causing problems to the internal combustion engine. Volatile matter in the fuel determines the design of the gasifier and layout of the gas cooling and cleaning system for elimination of tar content.

What is the temp at which volatile matter is determined in proximate analysis?

Volatile matter is determined as the loss in mass, less that due to moisture, when a sample is heated at 900 degrees Celsius for a period of 7 minutes. This procedure is undertaken out of contact with air under standardised conditions.

Which of the following is the heating condition to determine the volatile matter from sample the coal according to proximate analysis?

Volatile matter is defined as the gases driven off when coal is heated to 950°C (1742°F) in the absence of air under specified conditions and is consisted of short and long chain aliphatic carbon atoms (linked in open chains) or aromatic hydrocarbons (one or more six-carbon rings characteristic of benzene series) and …

What is volatile matter in solid waste?

Volatile matter (VM) is the fuel fraction (except moisture) released when the organic or inorganic yield of MSW experience thermal cracking at high temperature.

What is the importance of determining fixed carbon in coal?

In general, the fixed carbon represents the portion of the coal that must be burned in a solid state. Knowledge of fixed carbon helps in the selection of combustion equipment, since its form and hardness are an indication of the caking properties of a fuel.

What is the significance of determination of moisture in coal?

Moisture content is an important parameter in coal analysis. It is needed for determining the calorific (heating) value and handling properties of a coal.

What is the importance of determination of moisture content in coal?

Why do we need to get the proximate analysis of nutrients?

This is to ensure that consumers are well aware of the nutritional composition of foods so that they can make informed and knowledgeable decisions about their diet. Additionally they serve as means to create suitable conditions for fair market competition between food companies.

How is volatile matter measured in coal?

Volatile matter is one of the most common parameters measured in coal. It is measured as the weight percent of gas (emissions) from a coal sample that is released during heating to 950 C° in an oxygen-free environment , except for moisture (which will evaporate as water vapor), at a standardized temperature.

What is solid waste density?

The average density of MSW is 311.73 kg/m3.

What is volatile matter and fixed carbon?

Fixed carbon is the solid combustible residue that remains after a coal particle is heated and the volatile matter is expelled. The fixed-carbon content of a coal is determined by subtracting the percentages of moisture, volatile matter, and ash from a sample. Since gas-solid combustion…