On medium and low-temperature coal tar
Thread Content
In recent years, the production of medium- and low-temperature coal tar in our country has increased rapidly, and attention has been paid to the utilization of such coal tar as well as medium- and low-temperature asphalt; however, there are significant differences in their properties； Let’s discuss what the main differences are among low- and medium-temperature coal tar sources (such as semi-coke, non-coking furnaces, etc.)
The properties of medium- and low-temperature coal tar are closely related to its source. Generally, medium- and low-temperature coal tar is obtained by carbonization of different types of coal (such as semi-coke and coal used in gasifiers) at certain temperatures, and its properties are primarily influenced by factors such as the type of coal, the carbonization temperature, and the carbonization techniques. 1. Lanthan coal: The medium- and low-temperature coal tar produced from lanthan coal contains high levels of nitrogen compounds; however, the yield of coke is lower compared to other types of coal, while the yield of tar is relatively higher. Lan coal tar contains a high proportion of aromatic hydrocarbons, phenolic compounds, and other such substances; therefore, this type of tar is suitable as a raw material for the chemical industry. 2. Coal for gasifiers: The medium- and low-temperature coal tar produced from coal used in gasifiers has good quality, a high calorific value, and a higher proportion of aromatics and polycyclic aromatics; therefore, this type of tar is suitable for use in the production of coatings, fuels, etc. Generally speaking, the differences in medium- and low-temperature coal tar produced from coal of different sources are mainly reflected in their chemical composition and physical properties, including calorific value, freezing point, viscosity, as well as the types and proportions of chemical substances present. These differences result in different utilization methods and values for medium- and low-temperature coal tar. .