Biomass pyrolysis furnace

Abstract

A biomass pyrolysis furnace comprises a furnace shell ( 23 ), a furnace container ( 6 ), an exhaust pipe ( 3 ), a smoke pipe ( 18 ), a recovery tower ( 11 ), and an intake pipe ( 7 ), wherein the smoke pipe ( 18 ) is installed on the furnace shell ( 23 ); the furnace container ( 6 ) is installed in the furnace shell ( 23 ); the bottom of the furnace container ( 6 ) and the periphery thereof are provided with a plurality of mesh holes; an exhaust gap ( 24 ) is provided between the furnace container ( 6 ) and the inner wall of the furnace shell ( 23 ); the smoke pipe ( 18 ) is connected to the furnace shell ( 23 ) at one end thereof, and to the recovery tower ( 11 ) at the other end thereof. The furnace shell ( 23 ) is provided, on one side at the upper end, with a flue hole and an intake pipe ( 7 ), and the exhaust pipe ( 3 ) is provided on the opposite side of the furnace shell ( 23 ). The pyrolysis furnace has a short time of biomass pyrolysis, high efficiency, high pyrolysis recovery rate of wood tar, and a simple structure, and therefore it is convenient to operate and maintain.

What is claimed is: 
     
         1 . A biomass pyrolysis furnace, comprising a furnace shell, a furnace container, a smoke pipe, and a recovery tower; wherein, the smoke pipe is installed on the furnace shell, and the furnace container is installed in the furnace shell, characterized in that,
 a side wall of the furnace container is provided with a plurality of mesh holes,   a bottom of the furnace container either is a plate or is provided with a plurality of mesh holes,   an exhaust gap is provided between the furnace container and an inner surface of the side wall of the furnace shell, and   the smoke pipe is connected to the furnace shell at one end thereof and to the recovery tower at the other end thereof.   
     
     
         2 . The biomass pyrolysis furnace according to  claim 1 , characterized in that,
 the furnace shell is provided with an exhaust pipe communicated to the furnace container at one side thereof,   the furnace shell is provided with a flue mouth and an intake pipe at an upper end on another side thereof, and   the side at which the exhaust pipe is provided is opposite to the another side at which the intake pipe is provided.   
     
     
         3 . The biomass pyrolysis furnace according to  claim 1 , characterized in that the recovery tower is inclined with an angle a with respect to the horizontal plane, and 3°≦α≦60°. 
     
     
         4 . The biomass pyrolysis furnace according to  claim 1 , characterized in that an induced draft fan is mounted on the recovery tower at an outlet portion thereof 
     
     
         5 . The biomass pyrolysis furnace according to  claim 1 , characterized in that,
 the furnace shell is a closed tank consisting of a shell body and a water-seal cover,   the shell body is provided with a water-seal slot at a periphery of a furnace mouth,   the lower end of the water-seal cover is positioned within the water-seal slot.   
     
     
         6 . The biomass pyrolysis furnace according to  claim 1 , characterized in that, the furnace shell is provided with a cooling basin configured to store cooling liquid at a top end thereof. 
     
     
         7 . The biomass pyrolysis furnace according to of  claim 1 , characterized in that,
 the smoke pipe is provided with a liquid-seal valve, the liquid-seal valve is configured such that it includes an external-valve body, an external-valve cover, an internal-valve body and an internal-valve cover,   the external-valve body is provided with a liquid-seal slot at a top end thereof,   a lower end of the external-valve cover is positioned within the liquid-seal slot,   the external-valve cover and the external-valve body constitute an external valve having a closed cavity, and   the external valve is communicated to an intake pipe;   the internal-valve body is provided with a second liquid-seal slot at the outer surface thereof,   a lower end of the internal-valve cover is positioned within the second liquid-seal slot, and   the internal-valve cover and the internal-valve body constitute an internal valve having a closed cavity;   wherein the internal valve positioned in the closed cavity of the external valve is communicated to an outlet pipe.   
     
     
         8 . The biomass pyrolysis furnace according to  claim 2 , characterized in that,
 the intake pipe or exhaust pipe is provided with a liquid-seal valve,   the liquid-seal valve is configured such that it includes a liquid-seal cover and a liquid-seal slot provided at an outer surface of a mouth of the intake pipe or the exhaust pipe, and   a lower end of the liquid-seal cover is positioned within the liquid-seal slot.   
     
     
         9 . The biomass pyrolysis furnace according to  claim 1 , characterized in that,
 at least one ignition conduit communicated to the furnace container is provided at a top end of furnace shell,   a liquid-seal valve is provided at a mouth of the ignition conduit,   the liquid-seal valve is configured such that it includes a liquid-seal cover,   a liquid-seal slot is provided on an outer surface of the mouth of the ignition conduit,   and a lower end of the liquid-seal cover is positioned within the liquid-seal slot.   
     
     
         10 . The biomass pyrolysis furnace according to  claim 1 , characterized in that,
 the recovery tower is:   communicated to a wood gas pipe at an outlet thereof,   communicated to an oil collecting basin through an oil pipe at a lower end thereof,   communicated to a water tank through a water pipe at a top portion thereof, and   communicated to the water tank through another water pipe provided with a water circulating pump at a lower portion thereof.   
     
     
         11 . The biomass pyrolysis furnace according to  claim 5 , characterized in that, the furnace shell is provided with a cooling basin configured to store cooling liquid. 
     
     
         12 . The biomass pyrolysis furnace according to  claim 2 , characterized in that,
 the smoke pipe is provided with a liquid-seal valve, the liquid-seal valve is configured such that it includes an external-valve body, an external-valve cover, an internal-valve body and an internal-valve cover,   the external-valve body is provided with a liquid-seal slot at a top end thereof,   a lower end of the external-valve cover is positioned within the liquid-seal slot,   the external-valve cover and the external-valve body constitute an external valve having a closed cavity, and   the external valve is communicated to the intake pipe;   the internal-valve body is provided with a second liquid-seal slot at the outer surface thereof,   a lower end of the internal-valve cover is positioned within the second liquid-seal slot, and   the internal-valve cover and the internal-valve body constitute an internal valve having a closed cavity;   wherein the internal valve positioned in the closed cavity of the external valve is communicated to an outlet pipe.   
     
     
         13 . The biomass pyrolysis furnace according to  claim 3 , characterized in that,
 the smoke pipe is provided with a liquid-seal valve, the liquid-seal valve is configured such that it includes an external-valve body, an external-valve cover, an internal-valve body and an internal-valve cover,   the external-valve body is provided with a liquid-seal slot at a top end thereof,   a lower end of the external-valve cover is positioned within the liquid-seal slot,   the external-valve cover and the external-valve body constitute an external valve having a closed cavity, and   the external valve is communicated to an intake pipe;   the internal-valve body is provided with a second liquid-seal slot at the outer surface thereof,   a lower end of the internal-valve cover is positioned within the second liquid-seal slot, and   the internal-valve cover and the internal-valve body constitute an internal valve having a closed cavity;   wherein the internal valve positioned in the closed cavity of the external valve is communicated to an outlet pipe.   
     
     
         14 . The biomass pyrolysis furnace according to  claim 4 , characterized in that,
 the smoke pipe is provided with a liquid-seal valve, the liquid-seal valve is configured such that it includes an external-valve body, an external-valve cover, an internal-valve body and an internal-valve cover,   the external-valve body is provided with a liquid-seal slot at a top end thereof,   a lower end of the external-valve cover is positioned within the liquid-seal slot,   the external-valve cover and the external-valve body constitute an external valve having a closed cavity, and   the external valve is communicated to an intake pipe;   the internal-valve body is provided with a second liquid-seal slot at the outer surface thereof,   a lower end of the internal-valve cover is positioned within the second liquid-seal slot, and   the internal-valve cover and the internal-valve body constitute an internal valve having a closed cavity;   wherein the internal valve positioned in the closed cavity of the external valve is communicated to an outlet pipe.   
     
     
         15 . The biomass pyrolysis furnace according to  claim 5 , characterized in that,
 the smoke pipe is provided with a liquid-seal valve, the liquid-seal valve is configured such that it includes an external-valve body, an external-valve cover, an internal-valve body and an internal-valve cover,   the external-valve body is provided with a liquid-seal slot at a top end thereof,   a lower end of the external-valve cover is positioned within the liquid-seal slot,   the external-valve cover and the external-valve body constitute an external valve having a closed cavity, and   the external valve is communicated to an intake pipe;   the internal-valve body is provided with a second liquid-seal slot at the outer surface thereof,   a lower end of the internal-valve cover is positioned within the second liquid-seal slot, and   the internal-valve cover and the internal-valve body constitute an internal valve having a closed cavity;   wherein the internal valve positioned in the closed cavity of the external valve is communicated to an outlet pipe.   
     
     
         16 . The biomass pyrolysis furnace according to  claim 2 , characterized in that,
 at least one ignition conduit communicated to the furnace container is provided at a top end of furnace shell,   a liquid-seal valve is provided at a mouth of the ignition conduit,   the liquid-seal valve is configured such that it includes a liquid-seal cover,   a liquid-seal slot is provided on an outer surface of the mouth of the ignition conduit, and a lower end of the liquid-seal cover is positioned within the liquid-seal slot.   
     
     
         17 . The biomass pyrolysis furnace according to  claim 3 , characterized in that,
 at least one ignition conduit communicated to the furnace container is provided at a top end of furnace shell,   a liquid-seal valve is provided at a mouth of the ignition conduit,   the liquid-seal valve is configured such that it includes a liquid-seal cover,   a liquid-seal slot is provided on an outer surface of the mouth of the ignition conduit, and a lower end of the liquid-seal cover is positioned within the liquid-seal slot.   
     
     
         18 . The biomass pyrolysis furnace according to  claim 4 , characterized in that,
 at least one ignition conduit communicated to the furnace container is provided at a top end of furnace shell,   a liquid-seal valve is provided at a mouth of the ignition conduit,   the liquid-seal valve is configured such that it includes a liquid-seal cover,   a liquid-seal slot is provided on an outer surface of the mouth of the ignition conduit, and a lower end of the liquid-seal cover is positioned within the liquid-seal slot.   
     
     
         19 . The biomass pyrolysis furnace according to  claim 5 , characterized in that,
 at least one ignition conduit communicated to the furnace container is provided at a top end of furnace shell,   a liquid-seal valve is provided at a mouth of the ignition conduit,   the liquid-seal valve is configured such that it includes a liquid-seal cover,   a liquid-seal slot is provided on an outer surface of the mouth of the ignition conduit, and a lower end of the liquid-seal cover is positioned within the liquid-seal slot.   
     
     
         20 . The biomass pyrolysis furnace according to  claim 2 , characterized in that,
 the recovery tower is:   communicated to a wood gas pipe at an outlet thereof,   communicated to an oil collecting basin through an oil pipe at a lower end thereof,   communicated to a water tank through a water pipe at a top portion thereof, and   communicated to the water tank through another water pipe provided with a water circulating pump at a lower portion thereof.   
     
     
         21 . The biomass pyrolysis furnace according to  claim 3 , characterized in that, the recovery tower is:
 communicated to a wood gas pipe at an outlet thereof,   communicated to an oil collecting basin through an oil pipe at a lower end thereof,   communicated to a water tank through a water pipe at a top portion thereof, and   communicated to the water tank through another water pipe provided with a water circulating pump at a lower portion thereof.   
     
     
         22 . The biomass pyrolysis furnace according to  claim 4 , characterized in that,
 the recovery tower is:   communicated to a wood gas pipe at an outlet thereof,   communicated to an oil collecting basin through an oil pipe at a lower end thereof,   communicated to a water tank through a water pipe at a top portion thereof, and   communicated to the water tank through another water pipe provided with a water circulating pump at a lower portion thereof.   
     
     
         23 . The biomass pyrolysis furnace according to  claim 5 , characterized in that, the recovery tower is:
 communicated to a wood gas pipe at an outlet thereof,   communicated to an oil collecting basin through an oil pipe at a lower end thereof,   communicated to a water tank through a water pipe at a top portion thereof, and   communicated to the water tank through another water pipe provided with a water circulating pump at a lower portion thereof.