Coal pyrolysis process device

Abstract

A coal pyrolysis process device, including a primary coal pyrolysis device and a secondary coal pyrolysis device, wherein a discharge port of the primary coal pyrolysis device communicates with a feed port of the secondary coal pyrolysis device. When coal is in the primary coal pyrolysis device, coal tar is extracted to the maximum extent, and then enters the secondary coal pyrolysis device. The coal continues to be heated and undergo pyrolysis at an upper portion of the secondary coal pyrolysis device, so that volatile matter of upgraded coal having undergone primary pyrolysis and upgrading are further reduced in the secondary coal pyrolysis device, and more gas is produced.

1 . A coal pyrolysis process device, comprising a primary coal pyrolysis device and a secondary coal pyrolysis device, wherein the primary coal pyrolysis device is a coal decomposition apparatus which is in form of a rotary kiln radiant tube and of heating type;
 the primary coal pyrolysis device comprises a primary feed port, a primary discharge port, a primary coal gas outlet, and a heating mechanism in form of a primary radiant tube;   the secondary coal pyrolysis device comprises a secondary feed port, a secondary discharge port, a secondary coal gas outlet, and a secondary heating mechanism;   the primary discharge port communicates with the secondary feed port, coal tar is maximally extracted from coal in the primary coal pyrolysis device and then the coal is introduced into the secondary coal pyrolysis device, and the coal continues to be heated up and pyrolyzed at an upper portion of the secondary coal pyrolysis device, so that volatile matter of upgraded coal upgraded by a primary pyrolysis is further reduced in the secondary coal pyrolysis device, and more coal gas is produced.   
     
     
         2 . The coal pyrolysis process device according to  claim 1 , wherein the secondary coal pyrolysis device is a coal decomposition apparatus which is in form of a rotary kiln radiant tube and of heating type or a coal decomposition apparatus of a shaft kiln heat exchange type. 
     
     
         3 . The coal pyrolysis process device according to  claim 1 , wherein the coal pyrolysis process device further comprises a coal drying device disposed upstream of the primary coal pyrolysis device, and dried coal is introduced into the primary coal pyrolysis device. 
     
     
         4 . The coal pyrolysis process device according to  claim 1 , wherein the coal pyrolysis process device further comprises a deduster disposed at the primary coal gas outlet and a deduster disposed at the secondary coal gas outlet, and the deduster is a cyclone deduster or gravity deduster or a high temperature membrane filter having a filter element coated with a membrane at its surface. 
     
     
         5 . The coal pyrolysis process device according to  claim 4 , wherein output of the primary coal gas outlet and output of the secondary coal gas outlet are mixed together and enter the high temperature membrane filter. 
     
     
         6 . The coal pyrolysis process device according to  claim 4 , wherein output of the primary coal gas outlet and output of the secondary coal gas outlet are mixed together, and firstly pass through the cyclone deduster or the gravity deduster and then enter the high temperature membrane filter. 
     
     
         7 . The coal pyrolysis process device according to  claim 4 , wherein the primary coal gas outlet leads to a first membrane filter, and the secondary coal gas outlet leads to a second membrane filter. 
     
     
         8 . The coal pyrolysis process device according to  claim 4 , wherein output of the primary coal gas outlet passes through a first cyclone deduster or gravity deduster and then enters a first membrane filter, and output of the secondary coal gas outlet passes through a second cyclone deduster or gravity deduster and enters a second membrane filter.