Biomass recovery carbonization waste gas treatment device

Abstract

The invention relates to the technical field of biomass carbonization waste gas recovery, and discloses a biomass recovery carbonization waste gas treatment device which comprises a cavity, and the cavity is sequentially divided into a dust separation cavity, a gas-liquid separation cavity and a centrifugal separation cavity from outside to inside; the dust separation cavity comprises a conical part, a first gas inlet formed in the tangential direction of the dust separation cavity, and a dust outlet formed in the contraction end of the conical part; the gas-liquid separation cavity comprises a cooling liquid cavity capable of being filled with cooling liquid and a heat exchange cavity wrapping the cooling liquid cavity, a second gas inlet and a liquid outlet are formed in the heat exchange cavity, the second gas inlet is formed in the edge side of the dust separation cavity and communicated with the dust separation cavity, and the liquid outlet penetrates through the dust separation cavity and extends out of the cavity. The carbonization waste gas treatment device disclosed by the invention has the technical effects of being compact in structure and applicable to treatment of biomass recovery carbonization waste gas with a relatively small scale.

Description

Technical Field

[0001] The invention relates to the technical field of biomass carbonization waste gas recovery, and in particular to a biomass recovery carbonization waste gas treatment device. Background Art

[0002] Biomass carbonization refers to the process of converting biomass such as straw, branches, weeds, wood chips, organic waste, etc. into biochar by heating them at high temperatures under anaerobic or hypoxic conditions to undergo a series of complex thermochemical reactions.

[0003] In this process, the chemical composition and physical structure of biomass will change significantly. The temperature will generally reach several hundred degrees Celsius, the water in the biomass will be evaporated and removed first, and then the organic components will gradually decompose and reorganize to generate biomass charcoal with a relatively stable structure. The exhaust gas has a large content of combustible gas, which has recycling value, and is accompanied by by-products such as dust, wood tar, and wood vinegar. Discharging the exhaust gas directly into the atmosphere will cause serious environmental pollution.

[0004] The prior art proposes to process and reuse the biomass carbonization waste gas. Specifically, Chinese patent CN101017022A proposes a new process for directly using biomass carbonization gas as boiler fuel. The patent proposes to use a cyclone separator, a condensation separator, a centrifugal separator, etc. to separate dust, wood tar, wood vinegar liquid, etc. from the waste gas, and then further dry and wash the waste gas before directly passing it into the boiler for reuse.

[0005] This treatment process can significantly save energy and avoid environmental pollution, but the process uses a variety of equipment and the resulting treatment system occupies a large area, which is not suitable for some smaller-scale biomass recovery and carbonization plants. Therefore, a non-standard treatment device is needed to solve this technical defect. Summary of the invention

[0006] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a biomass recovery carbonization waste gas treatment device.

[0007] The biomass recovery carbonization waste gas treatment device proposed in the present invention comprises a cavity, which is divided into a dust separation cavity, a gas-liquid separation cavity and a centrifugal separation cavity from the outside to the inside in sequence; the carbonization waste gas can sequentially enter the dust separation cavity to separate dust, enter the gas-liquid separation cavity to separate part of wood tar and wood acetic acid liquid, and enter the centrifugal separation cavity to further separate dust, wood tar, etc.; the exhausted gas can be used as a new fuel after further washing and drying, which can significantly reduce the floor space occupied by the carbonization waste gas treatment system, and is more friendly to smaller-scale biomass recovery carbonization plants;

[0008] The dust separation chamber comprises a conical portion, a first gas inlet arranged tangentially along the dust separation chamber, and a dust outlet opened at the contraction end of the conical portion; after the carbonized waste gas enters the dust separation chamber tangentially through the first gas inlet, it can form a spiral motion, generate centrifugal force to separate the dust and gas, and the separated dust is discharged through the dust outlet under the action of gravity, and the gas enters the gas-liquid separation chamber to continue the operation;

[0009] The gas-liquid separation chamber includes a cooling liquid chamber into which cooling liquid can be introduced and a heat exchange chamber that wraps the cooling liquid chamber. A second gas inlet and a liquid outlet are provided on the heat exchange chamber. The second gas inlet is arranged at the edge of the dust separation chamber and communicates with the dust separation chamber. The liquid outlet penetrates the dust separation chamber and extends to the outside of the chamber. The cooling liquid chamber can be introduced into the circulating cooling liquid, and the heat exchange chamber is used to receive the gas discharged from the dust separation chamber. Most of the wood tar and wood acetic acid liquid in the gas are condensed into liquid by heat exchange, and discharged through the liquid outlet. The gas enters the centrifugal separation chamber to continue operation.

[0010] The centrifugal separation chamber includes a third gas inlet, a dust-liquid outlet and a gas outlet. The third gas inlet is arranged at the edge of the heat exchange chamber and is connected to the heat exchange chamber. The dust-liquid outlet sequentially penetrates the dust separation chamber and the gas-liquid separation chamber and extends to the outside of the chamber. A rotor is also arranged in the centrifugal separation chamber. A first spiral blade is arranged on the rotor. There is a gap between the first spiral blade and the cavity wall of the centrifugal separation chamber. The spiral blade is driven to rotate by the rotation of the rotor, and the gas is subjected to centrifugal force to produce a relatively high-speed spiral rotation. In this process, due to the difference in gravity, the remaining dust, wood tar, wood acetic acid liquid, etc. fall along the wall of the centrifugal separation chamber under the action of centrifugation and are discharged through the dust-liquid outlet. The processed gas is discharged through the gas outlet.

[0011] In the above process, since the three cavities of the dust separation chamber, the gas-liquid separation chamber, and the centrifugal separation chamber are arranged from the outside to the inside, the gas outlet of the outer cavity is the gas inlet of the inner cavity, and the structure between the three is very compact. In addition, the kinetic energy in the gas transmission process can be utilized step by step. Specifically, the exhaust gas discharged during the carbonization process itself has a certain power. After being input into the dust separation chamber in the tangential direction, it can produce spiral rotation, and the gas separated from the dust can produce turbulence, that is, it also has kinetic energy, and then enters the gas-liquid separation chamber. The power of the turbulent gas continues to be utilized in the gas-liquid separation chamber until it enters the centrifugal separation chamber, and the power is continued to be utilized. In the whole process, there is no connection of pipes, and the kinetic energy is fully utilized.

[0012] In some examples of the present invention, the heat exchange cavity includes a first heat exchange cavity close to the dust separation cavity and a second heat exchange cavity close to the centrifugal separation cavity, and the first heat exchange cavity and the second heat exchange cavity are connected;

[0013] The purpose of setting up two heat exchange chambers is that the gas passing through the dust separation chamber will be discharged from bottom to top, that is, the exhaust gas in the first heat exchange chamber enters from bottom to top, and the gas in the centrifugal separation chamber also enters from bottom to top. Therefore, in the meantime, the gas needs to be guided from top to bottom to the third gas inlet of the centrifugal separation chamber. The second heat exchange chamber can realize this function. At the same time, the second heat exchange chamber can also make the gas and condensate more fully exchange heat.

[0014] In some examples of the present invention, the second gas inlet is opened at the lower part of the first heat exchange cavity, and the upper part of the first heat exchange cavity is connected with the upper part of the second heat exchange cavity; even after the exhaust gas passes through the first heat exchange cavity, it is introduced into the second heat exchange cavity at a relatively upper position.

[0015] In some examples of the present invention, the first heat exchange cavity is connected to the second heat exchange cavity through a column, and the column runs through the cooling liquid cavity, that is, the gas that has completed heat exchange in the first heat exchange cavity enters the second heat exchange cavity through the column.

[0016] In some examples of the present invention, a second spiral blade is provided in the first heat exchange cavity, and the second spiral blade is used to guide the exhaust gas to flow in a spiral shape in the first heat exchange cavity, so that the exhaust gas forms a longer path in the first heat exchange cavity to ensure the heat exchange effect, and the second spiral blade uses the kinetic energy of the turbulent exhaust gas to further guide the gas to rise in a spiral shape.

[0017] In some examples of the present invention, an acute angle α is formed between the surface where the second spiral blade is located and the wall surface of the first heat exchange cavity close to the dust separation cavity;

[0018] The purpose of such a setting is that during the heat exchange process, byproducts such as wood tar and wood acetate liquid need to be discharged through the liquid outlet after condensing into liquid, and the structure of the angle α can guide the liquid discharge operation to avoid liquid dispersion.

[0019] In some examples of the present invention, the liquid outlet includes a first liquid outlet formed on the first heat exchange cavity and a second liquid outlet formed on the second heat exchange cavity, the first liquid outlet passes through the dust separation cavity and extends into the dust outlet, and the second liquid outlet passes through the cooling liquid cavity and the first heat exchange cavity and extends into the first liquid outlet;

[0020] The purpose of such arrangement is to extend the first liquid outlet and the second liquid outlet into the dust outlet, so that dust and wood tar etc. can be collected together for further treatment, and the entire exhaust gas treatment device is also consistent in appearance.

[0021] In some examples of the present invention, the third gas inlet and the dust-liquid outlet are both located at the lower part of the centrifugal separation chamber, and a baffle is provided between the third gas inlet and the dust-liquid outlet;

[0022] The purpose of such arrangement is that in the centrifugal separation chamber, the exhaust gas enters through the third gas inlet, and after obtaining centrifugal force, the remaining dust and wood tar, etc. have a greater weight and fall along the chamber wall, and are then discharged through the dust and liquid outlet. In this process, the baffle can prevent the separated dust and wood tar from mixing with the incoming exhaust gas.

[0023] In some examples of the present invention, an acute angle β is formed between the surface where the first spiral blade is located and the wall surface of the rotor, and the opening of the acute angle β points to the upper part of the centrifugal separation chamber;

[0024] The purpose of such a setting is that when the first spiral blade is rotated, the force applied to the exhaust gas can be decomposed into two directions, one direction pointing to the cavity wall of the centrifugal separation chamber, and the other direction pointing to the upper part of the centrifugal separation chamber, thereby providing an upward spiral motion for the exhaust gas, which can follow the running direction of the exhaust gas while separating the remaining dust, wood tar and other substances.

[0025] In some examples of the present invention, the swivel is connected to a rotating shaft, and the rotating shaft extends out of the cavity and is rotatably connected to the wall surface of the cavity;

[0026] The purpose of this arrangement is that the shaft extends out of the cavity so as to be connected to the power device and provide power to the shaft.

[0027] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 It is a front view of a biomass recovery and carbonization waste gas treatment device according to an embodiment of the present invention;

[0030] Figure 2 A top view of a biomass recovery and carbonization waste gas treatment device according to an embodiment of the present invention;

[0031] Figure 3 In the embodiment of the present invention Figure 2 Sectional view at AA;

[0032] Figure 4 In the embodiment of the present invention Figure 2 Cross-sectional view at BB;

[0033] Figure 5 In the embodiment of the present invention Figure 3 Detailed view at A;

[0034] Figure 6 In the embodiment of the present invention Figure 3 Detail at B.

[0035] Description of reference numerals:

[0036] Shell 1;

[0037] End cap 2;

[0038] A first inner shell 3;

[0039] A second inner shell 4;

[0040] The third inner shell 5;

[0041] Fourth inner shell 6;

[0042] Rotating shaft 7;

[0043] Nut 8;

[0044] Bearing 9;

[0045] Ring body 10;

[0046] Cavity 11;

[0047] Dust separation chamber 111, cone portion 1111, first gas inlet 1112, dust outlet 1113;

[0048] Gas-liquid separation chamber 112; cooling liquid chamber 1121, cooling liquid inlet 1121-1, cooling liquid outlet 1121-2,

[0049] A first heat exchange cavity 1122, a second gas inlet 1122-1, a second spiral blade 1122-2, a first liquid outlet 1122-3, a second heat exchange cavity 1123, a second liquid outlet 1123-1, and a column 1124;

[0050] Centrifugal separation chamber 113 , third gas inlet 1131 , dust and liquid outlet 1132 , gas outlet 1133 , rotor 1134 , first spiral blade 1135 , gap 1136 , baffle 1137 . DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0053] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0055] Reference below Figure 1 to Figure 6 The figure shows a biomass recovery and carbonization waste gas treatment device according to an embodiment of the present invention.

[0056] For details, please see the attached Figure 1, which is a front view of a biomass recovery carbonization waste gas treatment device. The device includes a shell 1 with an open end and a conical end with an opening. The upper end of the shell 1 has an end cover 2 that closes the open end of the shell 1, and a cavity 11 is formed between the shell 1 and the end cover 2.

[0057] Please see attached Figures 2-3 , respectively, the top view and Figure 2 In the cross-sectional view at AA, the outer shell 1 contains a first inner shell 3, and the first inner shell 3 contains a second inner shell 4. The cross-sections of the first inner shell 3 and the second inner shell 4 are U-shaped, and their open ends are connected to the end cover 2. The first inner shell 3 and the second inner shell 4 divide the cavity 11 into three cavities, namely the dust separation cavity 111, the gas-liquid separation cavity 112 and the centrifugal separation cavity 113.

[0058] Please continue to see the attached Figure 3 The dust separation chamber 111 includes a conical portion 1111 located at the bottom, a first gas inlet 1112 arranged along the tangent direction of the dust separation chamber 111, and a dust outlet 1113 opened at the contraction end of the conical portion 1111, and the dust outlet 1113 is the opening formed by the conical portion of the shell 1 mentioned above.

[0059] Please continue to see the attached Figure 3 The gas-liquid separation chamber 112 is further provided with a third inner shell 5 and a fourth inner shell 6, both of which are also U-shaped in cross-section, and the open ends are also connected to the end cover 2, dividing the gas-liquid separation chamber 112 into three chambers, namely:

[0060] A cooling liquid cavity 1121 for passing cooling liquid, the cooling liquid cavity 1121 is located in the middle, and a cooling liquid inlet 1121-1 and a cooling liquid outlet 1121-2 are provided at the upper end thereof. Specifically, the cooling liquid inlet 1121-1 and the cooling liquid outlet 1121-2 are provided on the end cover 2;

[0061] The heat exchange cavity that wraps the cooling liquid cavity 1121, that is, the first heat exchange cavity 1122 and the second heat exchange cavity 1123 are respectively located on the outside and inside of the cooling liquid cavity 1121, wherein a second gas inlet 1122-1 and a liquid outlet are opened on the heat exchange cavity, and the second gas inlet 1122-1 is arranged on the edge side of the dust separation cavity 111, that is, it is opened on the first inner shell 3, and is connected with the dust separation cavity 111, and the liquid outlet penetrates the dust separation cavity 111 and extends to the outside of the cavity 11.

[0062] Please continue to see the attached Figure 3The second gas inlet 1122-1 is opened at the lower part of the first heat exchange cavity 1122, and the upper part of the first heat exchange cavity 1122 is connected with the upper part of the second heat exchange cavity 1123, that is, the gas passing through the dust separation cavity 111 starts to rise and escape at a relatively lower position of the dust separation cavity 111, and just enters the first heat exchange cavity 1122 through the second gas inlet 1122-1 for heat exchange, reaches the upper part of the first heat exchange cavity 1122 and fully exchanges heat with the coolant, and then enters the second heat exchange cavity 1123 for heat exchange.

[0063] Please see attached Figure 4 ,for Figure 2 In the cross-sectional view at BB, the first heat exchange cavity 1122 is connected to the second heat exchange cavity 1123 through the column 1124, and the column 1124 passes through the cooling liquid cavity 1121. In the present embodiment, there is one column 1124 on each side, and the column 1124 passes through the cooling liquid cavity 1121. The outer wall thereof is welded to the third inner shell 5 and the fourth inner shell 6, and the openings at both ends are connected to the first heat exchange cavity 1122 and the second heat exchange cavity 1123 respectively.

[0064] Please continue to see the attached Figure 3 The first heat exchange cavity 1122 has a second spiral blade 1122-2, which is used to guide the exhaust gas entering the first heat exchange cavity 1122 so that it moves in a spiral shape in the first heat exchange cavity 1122, thereby increasing the stroke of the exhaust gas and ensuring sufficient contact between the exhaust gas and the cooling liquid cavity 1121.

[0065] Please continue to see the attached Figure 3 The liquid outlet includes a first liquid outlet 1122-3 formed on the first heat exchange cavity 1122 and a second liquid outlet 1123-1 formed on the second heat exchange cavity 1123. The first liquid outlet 1122-3 penetrates the dust separation cavity 111 and extends to the dust outlet 1113. The second liquid outlet 1123-1 penetrates the cooling liquid cavity 1121 and the first heat exchange cavity 1122 and extends to the first liquid outlet 1122-3.

[0066] Please continue to see the attached Figure 5 ,for Figure 3 In the detail diagram at point A, an acute angle α is formed between the surface where the second spiral blade 1122-2 is located and the wall surface of the first heat exchange cavity 1122 close to the dust separation cavity 111; the condensed liquid wood tar and wood acetic acid liquid etc. will fall along the spiral path of angle α and be discharged to the first liquid outlet 1122-3.

[0067] Please continue to see the attached Figure 3The centrifugal separation chamber 113 includes a third gas inlet 1131, a dust-liquid outlet 1132 and a gas outlet 1133. The third gas inlet 1131 is arranged at the edge of the heat exchange chamber and communicates with the second heat exchange chamber 1123. The dust-liquid outlet 1132 has two left and right outlets, which sequentially penetrate the dust separation chamber 111 and the gas-liquid separation chamber 112 and extend to the outside of the chamber 11. A rotor 1134 is also arranged in the centrifugal separation chamber 113. The rotor 1134 is provided with a first spiral blade 1135. The first spiral blade 1135 has a plurality of spiral blades 1136. There is a gap 1136 between 135 and the wall of the centrifugal separation chamber 113; when the rotor 1134 rotates, it drives the first spiral blade 1135 to rotate, thereby driving the exhaust gas to rotate in a spiral direction, and the centrifugal force separates the remaining dust, wood tar, wood acetic acid liquid, etc. in the exhaust gas from the gas and moves to the inner wall of the second inner shell 4. Then, the gas escapes upward at the gap 1136 and is discharged from the gas outlet 1133, and the dust, wood tar, wood acetic acid liquid, etc. fall downward at the gap 1136 and are discharged through the dust and liquid outlet 1132.

[0068] Please continue to see the attached Figure 3 The third gas inlet 1131 and the dust and liquid outlet 1132 are both located at the lower part of the centrifugal separation chamber 113. A baffle 1137 is provided between the third gas inlet 1131 and the dust and liquid outlet 1132. The baffle 1137 is fixed on the inner wall of the second inner shell 4 and is annular in shape to prevent dust, wood tar, wood acetic acid liquid, etc. from mixing with the exhaust gas at the third gas inlet 1131.

[0069] Please see attached Figure 6 ,for Figure 3 In the detail diagram at point B, an acute angle β is formed between the surface where the first spiral blade 1135 is located and the wall surface of the rotor 1134, and the opening of the acute angle β points to the upper part of the centrifugal separation chamber 113, that is, when the first spiral blade 1135 rotates, it can cause the exhaust gas to generate centrifugal force and upward force.

[0070] Please continue to see the attached Figure 3 The rotating body 1134 is connected to the rotating shaft 7, and the rotating shaft 7 extends out of the cavity 11 and is rotatably connected to the wall surface of the cavity 11;

[0071] For details, please refer to the attached Figure 3 The swivel 1134 is cylindrical trapezoidal and fits tightly in the middle of the shaft 7. One end of the shaft 7 extends to be rotatably connected to the end cover 2 and extends to the outside of the end cover 2. The other end extends to pass through the swivel 1134 and is connected to a nut 8 as a stop.

[0072] Please continue to see the attached Figure 3 The rotating shaft 7 and the end cover 2 are connected via a bearing 9 , and an annular body 10 is in contact between the inner ring of the bearing 9 and the rotating body 1134 to form a blocking effect on the rotating body 1134 .

[0073] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0074] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. Biomass recovery carbonization waste gas treatment device, characterized in that: It includes a cavity, which is divided into a dust separation cavity, a gas-liquid separation cavity and a centrifugal separation cavity from the outside to the inside; The dust separation chamber comprises a conical portion, a first gas inlet arranged along the tangent direction of the dust separation chamber, and a dust outlet opened at the contraction end of the conical portion; The gas-liquid separation chamber comprises a cooling liquid chamber into which cooling liquid can be passed and a heat exchange chamber that wraps the cooling liquid chamber, the heat exchange chamber is provided with a second gas inlet and a liquid outlet, the second gas inlet is arranged at the edge of the dust separation chamber and communicates with the dust separation chamber, and the liquid outlet penetrates the dust separation chamber and extends to the outside of the chamber; The centrifugal separation chamber includes a third gas inlet, a dust-liquid outlet and a gas outlet. The third gas inlet is arranged at the edge of the heat exchange chamber and is connected to the heat exchange chamber. The dust-liquid outlet sequentially penetrates the dust separation chamber and the gas-liquid separation chamber and extends to the outside of the chamber. A rotor is also arranged in the centrifugal separation chamber. A first spiral blade is arranged on the rotor. A gap is provided between the first spiral blade and the chamber wall of the centrifugal separation chamber.

2. The biomass recovery carbonization waste gas treatment device according to claim 1 is characterized in that: The heat exchange cavity comprises a first heat exchange cavity close to the dust separation cavity and a second heat exchange cavity close to the centrifugal separation cavity, and the first heat exchange cavity is communicated with the second heat exchange cavity.

3. The biomass recovery carbonization waste gas treatment device according to claim 2 is characterized in that: The second gas inlet is opened at the lower part of the first heat exchange cavity, and the upper part of the first heat exchange cavity is communicated with the upper part of the second heat exchange cavity.

4. The biomass recovery carbonization waste gas treatment device according to claim 3 is characterized in that: The first heat exchange cavity is communicated with the second heat exchange cavity through a column tube, and the column tube passes through the cooling liquid cavity.

5. The biomass recovery carbonization waste gas treatment device according to any one of claims 2 to 4, characterized in that: The first heat exchange cavity is provided with a second spiral blade.

6. The biomass recovery carbonization waste gas treatment device according to claim 5 is characterized in that: An acute angle α is formed between the surface where the second spiral blade is located and the wall surface of the first heat exchange cavity close to the dust separation cavity.

7. The biomass recovery carbonization waste gas treatment device according to any one of claims 2 to 4, characterized in that: The liquid outlet includes a first liquid outlet formed on the first heat exchange cavity and a second liquid outlet formed on the second heat exchange cavity, the first liquid outlet penetrates the dust separation cavity and extends to the dust outlet, and the second liquid outlet penetrates the cooling liquid cavity and the first heat exchange cavity and extends to the first liquid outlet.

8. The biomass recovery carbonization waste gas treatment device according to any one of claims 1 to 4, characterized in that: The third gas inlet and the dust-liquid outlet are both located at the lower part of the centrifugal separation chamber, and a baffle is provided between the third gas inlet and the dust-liquid outlet.

9. The biomass recovery carbonization waste gas treatment device according to any one of claims 1 to 4, characterized in that: An acute angle β is formed between the surface where the first spiral blade is located and the wall surface of the rotor, and the opening of the acute angle β points to the upper part of the centrifugal separation chamber.

10. The biomass recovery carbonization waste gas treatment device according to any one of claims 1 to 4, characterized in that: The rotating body is connected to a rotating shaft, and the rotating shaft extends out of the cavity and is rotatably connected to the wall surface of the cavity.

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