A method and plant of production of combustible gas using biomass

Abstract

This invention involves a method and plant of production of combustible gas using biomass. This plant comprises a furnace body, a furnace cavity, gasifying agent inlet, combustible gas outlet (arranged on furnace cavity and higher than gasifying agent inlet), and a device that ignites biomass arranged at intersection between the horizontal plane where the combustible gas outlet is located and the internal wall of the furnace cavity. Method of operation: load biomass in the plant and ignite the upper part; gasifying agent will run through the material from bottom to top, gasifying the material and generating flue gas. This invention features outstanding advantages of stable gasifying reaction, safe and reliable operation, high fuel gas calorific value, low environmental pollution, and easy purification of combustible gas etc. This method can be used to produce combustible gas from not only biomass, but also solid organic gasifying raw materials such as household garbage and industrial refuse etc.

1 . A method to produce combustible gas from biomass, which includes placing dry biomass material in a gasifying plant, wherein biomass is led out and ignited from top of said biomass material and gasifying agent is fed in from bottom of said biomass material, so that this agent penetrates said biomass material from bottom to top. 
     
     
         2 . The method to produce combustible gas from biomass of  claim 1 , wherein biomass is led out and ignited from top of said biomass material. 
     
     
         3 . The method to produce combustible gas from biomass of  claim 1 , wherein gasifying agent is fed in from bottom of said biomass material. 
     
     
         4 . The method to produce combustible gas from biomass of  claim 1 , wherein said combustible gas produced is made to pass a further layer of biomass material. 
     
     
         5 . The method to produce combustible gas from biomass of  claim 1 , wherein gasifying agent is blown into said gasifying plant. 
     
     
         6 . The method to produce combustible gas from biomass of any of  claims 1  to  5 , wherein combustible gas is sucked from said gasifying plant. 
     
     
         7 . A plant that produces combustible gas from biomass, comprising a furnace body, a furnace cavity, a gasifying agent inlet, and a combustible gas outlet;
 said gasifying agent inlet and combustible gas outlet are arranged on internal wall of said furnace cavity and said combustible gas outlet is higher than said gasifying agent inlet; and a device that ignites biomass is arranged at intersection between the horizontal plane where said combustible gas outlet is located and the internal wall of said furnace cavity.   
     
     
         8 . The plant that produces combustible gas from biomass of  claim 7 , wherein said biomass ignition device is located at said combustible gas outlet. 
     
     
         9 . The plant that produces combustible gas from biomass of  claim 7 , wherein said device of biomass ignition is an ignition hole. 
     
     
         10 . The plant that produces combustible gas from biomass of  claim 7 , wherein said biomass ignition device is a gasoline or diesel burner. 
     
     
         11 . The plant that produces combustible gas from biomass of  claim 7 , wherein said biomass ignition device is a coal gas or LNG or NG burner. 
     
     
         12 . The plant that produces combustible gas from biomass of any of  claims 7 - 11 , wherein said gasifying agent inlet is connected to a blower. 
     
     
         13 . The plant that produces combustible gas from biomass of any of  claims 7 - 11 , wherein said combustible gas outlet is connected to combustible gas extraction equipment.