Tail gas treatment system for biomass char

Abstract

The utility model relates to the technical field of biomass charcoal production equipment, especially tail gas treatment system of biomass charcoal, it includes: drying converter body, the side is equipped with feed inlet, the feed inlet is connected in the end of drying converter body, and the bottom of discharge box body is equipped with discharge gate, cyclone separator, the upper portion of discharge box body is connected with the gas outlet of discharge box body upper portion through first connecting pipe, vertical pipeline, and the upper end is connected in the upper end of cyclone separator through second connecting pipe, dust feeding spiral conveyor, and the upper portion is communicated with the lower end of cyclone separator through third connecting pipe, the upper portion of dust feeding spiral conveyor is communicated with the lower end of vertical pipeline through fourth connecting pipe, and the end of dust feeding spiral conveyor is connected in discharge box body, etc, through the structure of multistage biomass charcoal fine dry powder recovery of end connection setting in drying converter body, the biomass fine dry powder of smoke inclusion is fully recycled.

Description

Technical Field

[0001] This utility model relates to the technical field of biochar production equipment, and in particular to a biochar tail gas treatment system. Background Technology

[0002] Biochar is a carbon-rich solid material produced by the pyrolysis of biomass raw materials, mainly agricultural and forestry waste such as wood, straw, fruit shells, and livestock and poultry manure, under anaerobic or oxygen-limited conditions, typically at temperatures between 300-700℃. After being dried in a drying converter, biochar produces fine dry powder and flue gas. The flue gas contains some fine dry powder, and in existing technologies, a large amount of this powder is discharged with the flue gas, making it difficult to fully recover and utilize. Utility Model Content

[0003] The technical problem to be solved by this utility model is to improve the tail gas treatment system of biochar, to perform multi-stage treatment on the flue gas generated after drying in the drying converter, and to fully recover the fine dry biochar powder mixed in the flue gas.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] The exhaust gas treatment system for biochar includes:

[0006] Drying converter body;

[0007] The discharge box has a feed inlet on one side, which is connected to the end of the drying converter body, and a discharge outlet at the bottom of the discharge box.

[0008] A cyclone separator, wherein the upper part of the discharge box is connected to the air outlet at the upper part of the discharge box via a first connecting pipe;

[0009] A vertical pipe, the upper end of which is connected to the upper end of a cyclone separator via a second connecting pipe;

[0010] A dust feeding screw conveyor, wherein the upper part of the dust feeding screw conveyor is connected to the lower end of a cyclone separator through a third connecting pipe, the upper part of the dust feeding screw conveyor is connected to the lower end of a vertical pipe through a fourth connecting pipe, and the end of the dust feeding screw conveyor is connected to a discharge box.

[0011] The chimney pipe has a vertical axis and its side is connected to the lower end of the vertical pipe via a fifth connecting pipe. The fifth connecting pipe is equipped with an induced draft fan to guide the flue gas in the vertical pipe to the chimney pipe.

[0012] Furthermore, in the above-mentioned biochar tail gas treatment system structure, the end of the fifth connecting pipe connected to the chimney pipe is higher than the end connected to the vertical pipe; a flushing pipe is connected to one side of the chimney pipe relative to the fifth connecting pipe, one end of the flushing pipe extends through the chimney pipe to the fifth connecting pipe, and the other end of the flushing pipe is provided with a U-shaped water seal section; a drain pipe is provided at the lower end of the fifth connecting pipe.

[0013] Furthermore, in the above-mentioned biochar tail gas treatment system structure, a cooling layer is provided on the outside of the chimney pipe, and the cooling layer is filled with a cooling medium.

[0014] Furthermore, in the above-mentioned biochar tail gas treatment system structure, the first connecting pipe is provided with a first manhole;

[0015] Furthermore, in the above-mentioned biochar tail gas treatment system structure, a second manhole is provided on one side of the lower end of the cyclone separator.

[0016] Furthermore, in the above-mentioned biochar tail gas treatment system structure, a gate is installed at the lower end of the vertical pipe, and a third manhole is provided on one side of the vertical pipe near the upper part of the gate.

[0017] Furthermore, in the aforementioned biochar tail gas treatment system structure, a fourth manhole is provided on one side of the lower end of the chimney pipe.

[0018] The beneficial effects of this utility model are as follows: by connecting and setting a multi-stage biochar fine dry powder recovery structure at the end of the drying converter body, the biomass fine dry powder mixed in the flue gas can be fully recovered and utilized. Attached Figure Description

[0019] Figure 1 A schematic diagram of the tail gas treatment system of biochar according to a specific embodiment of this utility model;

[0020] Label Explanation:

[0021] 1. Drying converter body;

[0022] 2. Discharge box body; 21. Inlet; 22. Outlet; 23. Air outlet;

[0023] 3. First connecting pipe; 31. First manhole;

[0024] 4. Cyclone separator; 41. Second manhole;

[0025] 5. Vertical pipes; 51. Third manhole;

[0026] 6. Second connecting pipe;

[0027] 7. Dust feeding screw conveyor;

[0028] 8. Third connecting pipe;

[0029] 9. Fourth connecting pipe;

[0030] 10. Fifth connecting pipe; 101. Exhaust fan; 102. Drain pipe;

[0031] 11. Chimney pipe; 111. Cooling layer; 112. Fourth manhole;

[0032] 12. Flushing pipe; 121. U-shaped water seal section. Detailed Implementation

[0033] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0034] Please refer to Figure 1 The present invention relates to a tail gas treatment system for biochar, comprising:

[0035] Drying converter body 1;

[0036] The discharge box 2 has a feed inlet 21 on one side, which is connected to the end of the drying converter body 1, and a discharge outlet 22 at the bottom of the discharge box 2.

[0037] Cyclone separator 4, the upper part of the discharge box 2 is connected to the air outlet 23 on the upper part of the discharge box 2 through the first connecting pipe 3;

[0038] Vertical pipe 5, the upper end of which is connected to the upper end of cyclone separator 4 via a second connecting pipe 6;

[0039] The upper part of the dust feeding screw conveyor 7 is connected to the lower end of the cyclone separator 4 through the third connecting pipe 8, and the upper part of the dust feeding screw conveyor 7 is connected to the lower end of the vertical pipe 5 through the fourth connecting pipe 9. The end of the dust feeding screw conveyor 7 is connected to the discharge box 2.

[0040] Chimney pipe 11, the axis of which is vertical, the side of the chimney pipe 11 is connected to the side of the vertical pipe 5 near the lower end through the fifth connecting pipe 10, the fifth connecting pipe 10 is equipped with an induced draft fan 101, which is used to guide the flue gas in the vertical pipe 5 to the chimney pipe 11.

[0041] In the above embodiments, after the biomass charcoal is dried by the drying converter body 1, it naturally falls into the discharge box 2. The fine dry biomass charcoal powder falls naturally into the discharge port 22 below under the action of gravity and is discharged and collected. The flue gas at the tail end of the drying converter body 1 flows to the cyclone separator 4 through the air outlet 23 via the first connecting pipe 3. The cyclone separator 4 separates and settles the fine dry biomass charcoal powder mixed in the flue gas, and then enters the dust feeding screw conveyor 7 below through the third connecting pipe 8. The flue gas that has been separated by powder selection continues to enter the vertical dust feeding screw conveyor 7 through the second connecting pipe 6. Pipeline 5, through the settling process of vertical pipe 5, further separates the fine dry biochar powder in the flue gas, and enters the dust feeding screw conveyor 7 below through the fourth connecting pipe 9 below. The dust feeding screw conveyor 7 guides the collected fine dry biochar powder back to the discharge box 2, and collects it through the discharge port 22 at the bottom of the discharge box 2. The flue gas is led to the chimney pipe 11 by the induced draft fan 101, and is cooled in the chimney pipe 11, so that the moisture in the drying flue gas condenses, achieving the purpose of water-gas separation.

[0042] In a preferred embodiment, the end of the fifth connecting pipe 10 connected to the chimney pipe 11 is higher than the end connected to the vertical pipe 5; a flushing pipe 12 is connected to one side of the chimney pipe 11 relative to the fifth connecting pipe 10, one end of the flushing pipe 12 extends through the chimney pipe 11 to the fifth connecting pipe 10, and the other end of the flushing pipe 12 is provided with a U-shaped water seal section 121; a drain pipe 102 is provided at the lower end of the fifth connecting pipe 10.

[0043] In the above embodiments, by setting up a flushing pipe 12, water can be periodically supplied to the flushing pipe 12 to flush the fifth connecting pipe 10 and the blades of the induced draft fan 101. Wastewater is discharged through the drain pipe 102. By setting up a U-shaped water seal section 121, some water remains in the water seal section to seal it when not flushing, thus preventing internal flue gas from being discharged from the flushing pipe 12.

[0044] In a preferred embodiment, a cooling layer 111 is provided on the outside of the chimney pipe 11, and the cooling layer 111 is filled with a cooling medium.

[0045] In the above embodiments, cooling water can be introduced into the cooling layer 111, and an inlet pipe and an outlet pipe can be provided in the cooling layer 111. By setting an external circulation pipeline and a refrigeration mechanism for heat exchange of the circulation pipeline, the cooling water continuously cools the wall of the chimney pipe 11 through circulation. The moisture in the flue gas in the chimney pipe 11 condenses on the wall of the chimney pipe 11, achieving the purpose of water-gas separation.

[0046] In a preferred embodiment, the first connecting pipe 3 is provided with a first manhole 31;

[0047] In a preferred embodiment, a second manhole 41 is provided on one side of the lower end of the cyclone separator 4.

[0048] In a preferred embodiment, a gate is provided at the lower end of the vertical pipe 5, and a third manhole 51 is provided on one side of the vertical pipe 5 near the upper part of the gate.

[0049] In a preferred embodiment, a fourth manhole 112 is provided on one side of the lower end of the chimney pipe 11.

[0050] In the above embodiments, manholes are provided in multiple areas where dust easily accumulates, which facilitates regular cleaning of these areas and avoids clogging.

[0051] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A tail gas treatment system for biochar, characterized in that, include: Drying converter body; The discharge box has a feed inlet on one side, which is connected to the end of the drying converter body, and a discharge outlet at the bottom of the discharge box. A cyclone separator, wherein the upper part of the discharge box is connected to the air outlet at the upper part of the discharge box via a first connecting pipe; A vertical pipe, the upper end of which is connected to the upper end of a cyclone separator via a second connecting pipe; A dust feeding screw conveyor, wherein the upper part of the dust feeding screw conveyor is connected to the lower end of a cyclone separator through a third connecting pipe, the upper part of the dust feeding screw conveyor is connected to the lower end of a vertical pipe through a fourth connecting pipe, and the end of the dust feeding screw conveyor is connected to a discharge box. The chimney pipe has a vertical axis and its side is connected to the lower end of the vertical pipe via a fifth connecting pipe. The fifth connecting pipe is equipped with an induced draft fan to guide the flue gas in the vertical pipe to the chimney pipe.

2. The biochar tail gas treatment system according to claim 1, characterized in that, The end of the fifth connecting pipe connected to the chimney pipe is higher than the end connected to the vertical pipe; a flushing pipe is connected to the side of the chimney pipe opposite to the fifth connecting pipe, one end of the flushing pipe extends through the chimney pipe to the fifth connecting pipe, and the other end of the flushing pipe is provided with a U-shaped water seal section; a drain pipe is provided at the lower end of the fifth connecting pipe.

3. The tail gas treatment system for biochar according to claim 1, characterized in that, The outside of the chimney pipe is provided with a cooling layer, which is filled with a cooling medium.

4. The tail gas treatment system for biochar according to claim 1, characterized in that, The first connecting pipe is equipped with a first manhole.

5. The tail gas treatment system for biochar according to claim 1, characterized in that, A second manhole is provided on one side of the lower end of the cyclone separator.

6. The tail gas treatment system for biochar according to claim 1, characterized in that, A gate is installed at the lower end of the vertical pipe, and a third manhole is provided on one side of the vertical pipe near the upper part of the gate.

7. The tail gas treatment system for biochar according to claim 1, characterized in that, A fourth manhole is provided on one side of the lower end of the chimney pipe.

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