Influence Study of Organic and Inorganic Additive to Coal Combustion Characteristic

In order to study the influence of organic and inorganic additive to coal combustion characteristic, a self-made small-sized experiment platform and advanced gas analyzer PG-250A were used, and the concentration changes of CO released by three kinds of coals with different properties in the oxidation process of low temperature (150°C) were determined continuously before and after adding new type Ammonia-free Gel, MgCl2 and Antioxidant A. Results display that: MgCl2 has better inhibitory effect in earlier stage than in later stage; Conversely Antioxidant A has better inhibitory effect in later stage than in earlier stage; Ammonia-free Gel 2 has excellent inhibitory effect in the whole progress of coal oxidation; The inhibitory rates of Ammonia-free Gel 2 to Yima coal and Yangquan coal respectively are 57.0% and 47.9%, and Ammonia-free Gel 2 has better inhibitory effect than MgCl2 and Antioxidant A; MgCl2 has better inhibitory effect to Pingdingshan coal than Ammonia-free Gel 2 and Antioxidant A, and its’ inhibitory rate is 80.5%. Study indicates that: Ranging the inhibitors by their inhibitory effect form superior to inferior, three inhibitors are in turn Ammonia-free Gel 2, MgCl2 and Antioxidant A.