| 摘要 |
The invention discloses a coal material decomposition apparatus with combined screw-type bins, which comprises a sealed rotary kiln body (1) provided with a coal inlet (2) and a coal outlet (3). A coal decomposition gas collecting pipe (10) is arranged in the kiln body. The coal decomposition gas collecting pipe is provided with two parallel spirals (11) for dividing space in the kiln body into a heating gas bin (5) and a coal material decomposition bin (4). The coal decomposition gas collecting pipe is communicated with the coal material decomposition bin through a gas guide hole (12) arranged in the coal material decomposition bin. Pulverized coal after absorbing heat sufficiently is decomposed into coal gas, coal tar gas and coal with high calorific value. As the kiln body is internally divided into the a heating gas bin and a coal material decomposition bin isolated from each other, a large amount of hot gas in the heating gas conducts and radiates the heat to the pulverized coal in the coal material decomposition bin, and the pulverized coal can fully absorb the heat so as to be heated for being decomposed into the gas, coal tar gas and coal with high heat-value in the coal material decomposition bin. |
