Nibased industrial catalyst has been introduced into hot gas cleanup study for removal of ammonia, coal tar and organic sulfur compounds in hightemperature gas.
An overview of internal and external study is made on hightemperature purification of gaseous contaminants including sulfur, nitrogen and chlorine pollutants, alkali metal, heavy metal and tar vapor.
A fraction of naphthalene oil from coal tar at hightemperature was used as raw material to synthesize a new type of dispersing agent for coal water slurry (CWS).