Small-particle biomass charcoal heat cogeneration equipment

Abstract

The utility model discloses charcoal heat co-production equipment for small-particle biomass. The charcoal heat co-production equipment comprises a shell, the shell consists of a heating box and a cooling box which are mutually independent; fuel is preset in an inner cavity of the heating box, and a combustion smoke exhaust pipe and an ignition gas inlet are arranged on the upper portion and the lower portion of the heating box respectively. A cooling water outlet and a cooling water inlet are respectively formed in the upper part and the lower part of the cooling box; destructive distillation pipes penetrating through inner cavities of the heating box and the cooling box are arranged in the heating box and the cooling box; the front end of the dry distillation pipe is communicated with a feed port formed in the front end of the heating box, and the rear end penetrates out of the rear end of the cooling box to form a discharge port; a spiral pusher which penetrates through inner cavities of the destructive distillation pipe and the feeding hole and is driven by a driving motor to rotate is arranged in the destructive distillation pipe and the feeding hole; a plurality of dry distillation pipe exhaust holes communicated with the inner cavity of the heating box are formed in the upper part of the dry distillation pipe in the heating box. Due to the fact that flue gas obtained through dry distillation in sequence can be completely combusted and cracked in the heating box, a large amount of generated heat is effectively utilized, and air pollution and energy waste are reduced. And after combustion, the gas discharged from the combustion smoke exhaust pipe can reach the boiler emission standard, so that the purposes of producing carbon and heat from the biomass raw material and reaching the emission standard are achieved.

Description

Technical Field

[0001] This utility model belongs to the field of biomass dry distillation technology and relates to a small-particle biomass co-generation equipment. Background Technology

[0002] Charcoal is made from biomass through gradual heating and dry distillation. Because the concentration and temperature of the flue gas produced during the gradual heating process vary greatly, not all of it can be used as fuel. Most of it can only be emitted into the atmosphere, causing air pollution and energy waste. Utility Model Content

[0003] The purpose of this invention is to provide a small-particle biomass cogeneration equipment with a simple structure and reasonable design, which enables the flue gas produced by sequential dry distillation to be used as fuel, thereby reducing air pollution and energy waste.

[0004] The technical solution adopted in this utility model is as follows: the device includes a housing; its characteristic is:

[0005] The shell consists of an independent heating chamber and a cooling chamber; the heating chamber is pre-filled with fuel, and its upper and lower parts are respectively equipped with combustion exhaust pipes and ignition air inlets; the upper and lower parts of the cooling chamber are respectively equipped with cooling water drain outlets and cooling water inlets;

[0006] The heating box and cooling box are equipped with a pyrolysis tube that runs through their interior cavities; the front end of the pyrolysis tube is connected to the feed inlet located at the front end of the heating box, and the rear end extends out from the rear end of the cooling box to form a discharge port;

[0007] The distillation tube and the feed inlet are equipped with a spiral feeder that runs through their inner cavity and is driven by a drive motor to rotate.

[0008] The upper part of the pyrolysis tube located inside the heating chamber is provided with multiple pyrolysis tube exhaust holes that communicate with the inner cavity of the heating chamber.

[0009] Using the above structure, during operation, the pre-placed fuel inside the heating chamber is first ignited at the ignition inlet, heating the chamber to a preset temperature. Then, biomass feedstock is fed through the inlet and conveyed to the pyrolysis tube inside the heating chamber via a rotating screw conveyor driven by a motor. The heat generated by combustion inside the heating chamber is conducted through the tube wall to the tube, pyrolyzing the biomass feedstock. Simultaneously, the screw conveyor's forward pushing action within the tube ensures thorough mixing and uniform heating of the biomass feedstock, resulting in complete pyrolysis and the production of high-quality charcoal. The flue gas generated during high-temperature pyrolysis is discharged into the heating chamber cavity through the exhaust port at the top of the pyrolysis tube. After mixing with the air supplied through the ignition inlet, it burns inside the chamber. Unburned gas is burned in the combustion exhaust pipe before being discharged into the next heat recovery device. The high-temperature carbon powder, carbonized in the dry distillation tubes inside the heating chamber, is pushed by a screw conveyor into the dry distillation tubes inside the cooling chamber. After being cooled by cooling water, it is discharged from the outlet. This cycle repeats continuously to complete the dry distillation operation.

[0010] Because the flue gas produced by the sequential dry distillation of this invention can be completely combusted and pyrolyzed in the heating chamber, the large amount of heat generated is effectively utilized, reducing air pollution and energy waste. Furthermore, the gas discharged from the combustion exhaust pipe after combustion meets boiler emission standards, thus achieving the goals of biomass raw material charcoal production, heat generation, and emission compliance. This invention has a simple structure and reasonable design, filling a gap in this type of equipment and is worthy of widespread promotion and application. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] In the diagram: 1-Drive motor; 2-Feed inlet; 3-Combustion exhaust pipe; 4-Screw conveyor blade; 5-Dry distillation tube; 6-Heating box; 7-Cooling water drain outlet; 8-Cooling box; 9-Discharge outlet; 10-Cooling water inlet; 11-Ignition air inlet; 12-Dry distillation tube exhaust port; 13-Through shaft. Detailed Implementation

[0013] As shown in the figure, this utility model includes a shell. The shell consists of a heating chamber 6 and a cooling chamber 8, which are independent and sealed to each other. Fuel is pre-filled inside the heating chamber 6, and combustion exhaust pipe 3 and ignition air inlet 11 are respectively provided on its upper and lower parts. Cooling chamber 8 is provided with cooling water drain outlet 7 and cooling water inlet 10 on its upper and lower parts, respectively. A pyrolysis tube 5 is provided inside the heating chamber 6 and the cooling chamber 8, penetrating their inner cavities. The front end of the pyrolysis tube 5 communicates with the feed inlet 2 located at the front end of the heating chamber 6, and the rear end extends out from the rear end of the cooling chamber 8 to form a discharge outlet 9. A screw feeder is provided inside the pyrolysis tube 5 and the feed inlet 2, penetrating their inner cavities and driven to rotate by a drive motor 1. The upper part of the pyrolysis tube 5 located inside the heating chamber 6 is provided with multiple pyrolysis tube exhaust holes 12 that communicate with the inner cavity of the heating chamber 6.

[0014] The spiral feeder consists of a through shaft 13 and spiral conveying blades 4 fixed on its outer side; the through shaft 13 extends from the front end of the feed inlet 2 and is connected to the drive motor 1; the drive motor 1 drives the spiral conveying blades 4 to rotate through the through shaft 13.

[0015] The heating box 6 and the combustion exhaust pipe 3 are both cylindrical, and their inner walls are lined with fire-resistant and heat-insulating materials of sufficient thickness.

[0016] The outer wall of the distillation tube 5 is sealed to the walls of the heating box 6, the cooling box 8, and the wall between the heating box 6 and the cooling box 8.

Claims

1. A small-particle biomass charcoal heat cogeneration device, comprising a shell; characterized in that: the shell is composed of a heating box (6) and a cooling box (8) which are independent of each other; the heating box (6) is pre-installed with fuel in its inner cavity, and is respectively provided with a combustion and smoke exhaust pipe (3) and an ignition air inlet (11) at its upper and lower parts; the cooling box (8) is respectively provided with a cooling water drain outlet (7) and a cooling water inlet (10) at its upper and lower parts; the heating box (6) and the cooling box (8) are respectively provided with a dry distillation pipe (5) which penetrates through their inner cavities; the front end of the dry distillation pipe (5) is communicated with a feeding inlet (2) arranged at the front end of the heating box (6), and the rear end of the dry distillation pipe (5) penetrates out of the rear end of the cooling box (8) to form a discharging outlet (9); the dry distillation pipe (5) and the feeding inlet (2) are respectively provided with a spiral pushing device which penetrates through their inner cavities and is driven to rotate by a driving motor (1); the dry distillation pipe (5) located in the inner cavity of the heating box (6) is provided with a plurality of dry distillation pipe exhaust holes (12) which are communicated with the inner cavity of the heating box (6) at its upper part.

2. The small particle biomass char heat co-production apparatus of claim 1, wherein: the spiral pushing device is composed of a through shaft (13) and spiral conveying blades (4) fixed on the outer side of the through shaft (13); the through shaft (13) penetrates out of the front end of the feeding inlet (2) and is connected with the driving motor (1); the driving motor (1) drives the spiral conveying blades (4) to rotate through the through shaft (13).

3. The small particle biomass char heat co-production apparatus of claim 1, wherein: the heating box (6) and the combustion and smoke exhaust pipe (3) are both in a cylindrical shape, and their inner walls are inlaid with refractory insulation materials with sufficient thickness.

4. The small particle biomass char heat co-production apparatus of claim 1, wherein: the outer wall of the dry distillation pipe (5) is in sealed connection with the wall of the heating box (6), the wall of the cooling box (8), and the wall between the heating box (6) and the cooling box (8).

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