Organic material pyrolysis device with heat self-sustaining supply function

Abstract

The organic material pyrolysis device with the heat self-sustaining supply function comprises a rotary kiln, the rotary kiln comprises a barrel, a supporting part and a driving part, the barrel is rotatably arranged on the supporting part, the driving part can drive the barrel to rotate on the supporting part, the barrel is provided with a feeding port and a first outlet, the feeding port is used for feeding materials into the barrel, and the first outlet is used for discharging the materials into the barrel; pyrolysis gas and discharged materials generated in the cylinder body can be discharged from the first outlet; an inlet of the combustion chamber communicates with the first outlet, the combustion chamber is used for combusting pyrolysis gas introduced into the combustion chamber, and an air distribution opening and an auxiliary combustor are arranged on the combustion chamber; the heat exchange part is provided with a heat exchange cavity and a flue gas inlet, the flue gas inlet is communicated with a flue of the combustion chamber, flue gas generated by the combustion chamber can be introduced into the heat exchange cavity through the flue gas inlet, and the flue gas in the heat exchange cavity is used for heating materials in the barrel. The organic material pyrolysis device with the heat self-sustaining supply function has the advantage of being capable of reducing energy consumption.

Description

Technical Field

[0001] The utility model relates to the technical field of organic material pyrolysis, in particular to an organic material pyrolysis device with self-sustaining heat supply. Background Art

[0002] In the related art, the external heating rotary kiln pyrolysis process mostly uses auxiliary fuels, such as fuel oil, gas, and particle fuel, to heat the kiln body, which consumes a lot of energy and has a low thermal energy utilization rate. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the embodiment of the utility model provides an organic material pyrolysis device with self-sustaining heat supply.

[0004] The organic material pyrolysis device with self-sustaining heat supply of the embodiment of the utility model comprises:

[0005] A rotary kiln, the rotary kiln comprising a cylinder, a support part and a driving part, the cylinder is rotatably arranged on the support part, the driving part can drive the cylinder to rotate on the support part, the cylinder has a feed inlet and a first outlet, the feed inlet is used to feed into the cylinder, and the pyrolysis gas and the discharge material generated in the cylinder can be discharged from the first outlet;

[0006] A combustion chamber, wherein the inlet of the combustion chamber is connected to the first outlet, the combustion chamber is used to burn the pyrolysis gas introduced therein, and the combustion chamber is provided with an air distribution port and an auxiliary burner;

[0007] The heat exchange part has a heat exchange cavity and a flue gas inlet, the flue gas inlet is connected to the flue of the combustion chamber, the flue gas generated by the combustion chamber can pass into the heat exchange cavity through the flue gas inlet, and the flue gas in the heat exchange cavity is used to heat the material in the cylinder.

[0008] The organic material pyrolysis device with self-sustaining heat supply according to the embodiment of the utility model has the advantage of reducing energy consumption.

[0009] In some embodiments, the feed port and the first outlet are opened on both sides of the cylinder in the first direction;

[0010] The first outlet of the cylinder extends into the combustion chamber, and the cylinder can rotate relative to the combustion chamber;

[0011] The combustion chamber comprises a combustion chamber and a discharge chamber, both of which are connected to the first outlet, the combustion chamber is located above the first outlet, the pyrolysis gas discharged from the first outlet can be introduced into the combustion chamber for combustion, the air distribution port cooperates with the auxiliary burner to control the temperature in the combustion chamber, the discharge chamber is located below the first outlet, the discharge generated in the cylinder can be discharged into the discharge chamber through the first outlet, and a discharge port is provided at the bottom of the discharge chamber.

[0012] In some embodiments, the temperature in the combustion chamber is greater than or equal to 850°C;

[0013] The size of the combustion chamber in the up-down direction is greater than or equal to a first preset value, and the residence time of smoke in the combustion chamber is greater than or equal to 2 seconds.

[0014] In some embodiments, the cross-sectional area of ​​the lower portion of the combustion chamber increases upward;

[0015] The cross-sectional area of ​​at least part of the discharge cavity decreases downward.

[0016] In some embodiments, the combustion chamber includes a first side wall and a second side wall arranged opposite to each other in the first direction, the first outlet of the cylinder extends into the combustion chamber from the first side wall, the cylinder can rotate relative to the first side wall, and the air distribution port and the auxiliary burner are arranged on the second side wall;

[0017] The first portion of the first side wall is located above the first outlet, the inner wall surface of the first portion defines a portion of the wall surface of the combustion chamber, and the distance between the lower portion of the first portion and the second side wall increases upwards;

[0018] The second portion of the first side wall is located below the first outlet, the inner wall surface of the second portion defines a portion of the wall surface of the discharge cavity, and the distance between at least a portion of the second portion and the second side wall decreases downward.

[0019] In some embodiments, the heat exchange portion is in contact with at least a portion of the outer circumference of the cylinder, and the cylinder is rotatable relative to the heat exchange portion.

[0020] In some embodiments, the heat exchange portion is arranged on the outer peripheral side of the cylinder, the heat exchange portion and at least part of the outer peripheral surface of the cylinder define the heat exchange cavity, the heat exchange cavity is arranged on the peripheral side of the cylinder, and the heat exchange cavity has a second preset size in the first direction.

[0021] In some embodiments, the flue of the combustion chamber includes a first sub-flue and a second sub-flue, the second sub-flue is connected to the combustion chamber through the first sub-flue, and the lower opening of the second sub-flue is connected to the heat exchange chamber.

[0022] In some embodiments, an outer surface of the heat exchange portion is provided with a thermal insulation layer.

[0023] In some embodiments, the heat exchange portion has a smoke outlet communicated with the heat exchange cavity, the smoke outlet is adjacent to the feed inlet in the first direction, and the smoke inlet is adjacent to the first outlet in the first direction;

[0024] A size ratio of the heat exchange cavity to the cylinder in the first direction is greater than or equal to 0.6. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of an organic material pyrolysis device with self-sustaining heat supply according to an embodiment of the utility model.

[0026] Reference numerals:

[0027] 1. rotary kiln, 11. cylinder, 12. feed port, 13. first outlet, 14. support part, 15. driving part;

[0028] 2. combustion chamber, 21. combustion cavity, 22. discharge cavity, 23. discharge port, 24. first side wall, 25. second side wall, 26. air distribution port, 27. auxiliary burner;

[0029] 3. Flue, 31. First sub-flue, 32. Second sub-flue;

[0030] 4. heat exchange part, 41. heat exchange chamber, 42. flue gas inlet, 43. flue gas outlet, 44. thermal insulation layer. DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.

[0032] The following is a description of the organic material pyrolysis device with self-sustaining heat supply according to the embodiment of the utility model with reference to the accompanying drawings. Figure 1 As shown, the organic material pyrolysis device with self-sustaining heat supply according to the embodiment of the utility model includes a rotary kiln 1, a combustion chamber 2 and a heat exchange part 4.

[0033] The rotary kiln 1 includes a cylinder 11, a support 14 and a driving unit 15. The cylinder 11 is rotatably arranged on the support 14, and the driving unit 15 can drive the cylinder 11 to rotate on the support 14. The cylinder 11 has a feed port 12 and a first outlet 13. The feed port 12 is used to feed into the cylinder 11, and the pyrolysis gas and the discharge generated in the cylinder 11 can be discharged from the first outlet 13. Specifically, organic materials (sludge, agricultural residues, poultry and livestock manure, etc.) enter the rotary kiln 1 (cylinder 11) from the feed port 12. The driving unit 15 includes a motor and a gear, thereby driving the cylinder 11 to rotate slowly.

[0034] The inlet of the combustion chamber 2 is connected to the first outlet 13. The combustion chamber 2 is used to burn the pyrolysis gas introduced therein. The combustion chamber 2 is provided with an air distribution port 26 and an auxiliary burner 27. The combustion chamber 2 is convenient for monitoring the flue gas temperature, flow rate and other conditions. The combustion chamber 2 is provided with an air distribution port 26 and an auxiliary burner 27, which can be used to adjust the temperature of the flue gas so that the entire pyrolysis system can achieve thermal self-sustaining.

[0035] The heat exchange part 4 has a heat exchange chamber 41 and a flue gas inlet 42. The flue gas inlet 42 is connected to the flue 3 of the combustion chamber 2. The flue gas generated by the combustion chamber 2 can be passed into the heat exchange chamber 41 through the flue gas inlet 42. The flue gas in the heat exchange chamber 41 is used to heat the material in the cylinder 11. The material is subjected to the heat transferred from the smoke in the heat exchange chamber 41, and undergoes anoxic pyrolysis reaction. The generated solid biochar falls from the first outlet 13 and is collected. The generated gaseous pyrolysis gas enters the combustion chamber 2 for combustion. The high-temperature flue gas after combustion enters the heat exchange chamber 41 through the flue 3, and indirectly transfers the heat to the material in the cylinder 11.

[0036] According to the organic material pyrolysis device with self-sustaining heat supply of the embodiment of the utility model, the first outlet 13 of the rotary kiln 1 is connected to the inlet of the combustion chamber 2, so that the pyrolysis gas generated in the barrel 11 of the rotary kiln can directly enter the combustion chamber 2 for combustion, and the smoke generated by the combustion can be passed from the flue 3 into the heat exchange chamber 41 of the heat exchange part 4, so that the smoke in the heat exchange chamber 41 can be used to heat the material in the barrel 11. When the smoke in the heat exchange chamber 41 heats the material in the barrel 11, the driving part 15 can drive the barrel 11 to rotate on the supporting part 14, so that the material in the barrel 11 can be heated evenly, thereby facilitating the generation of pyrolysis gas. In other words, the pyrolysis gas generated by the rotary kiln 1 can be used as fuel for the combustion chamber 2, and the smoke generated by the combustion in the combustion chamber 2 can be used as a heat source to heat the material in the rotary kiln 1, thereby reducing energy consumption.

[0037] The organic material pyrolysis device with self-sustaining heat supply according to the embodiment of the utility model has the advantage of reducing energy consumption.

[0038] like Figure 1As shown, the feed port 12 and the first outlet 13 are opened on both sides of the barrel 11 in the first direction. The first direction can be the left-right direction, and the left-right direction and the up-down direction are shown by the arrows in the figure. Specifically, the length direction (generally) of the barrel 11 is the first direction. For example, the length direction (generally) of the barrel 11 is the left-right direction, and the inclined setting of the barrel 11 facilitates discharging. The feed port 12 is opened on the left side of the barrel 11, and the first outlet 13 is opened on the right side of the barrel 11.

[0039] The first outlet 13 of the barrel 11 extends into the combustion chamber 2, and the barrel 11 can rotate relative to the combustion chamber 2. Specifically, the combustion chamber 2 has a combustion chamber 21 and a discharge chamber 22, and both the combustion chamber 21 and the discharge chamber 22 are connected to the first outlet 13. The barrel 11 is connected to the combustion chamber 2, and the system equipment is highly integrated, which simplifies the process system, streamlines the intermediate links, improves the system operation stability, and reduces the equipment maintenance rate.

[0040] The combustion chamber 21 is located above the first outlet 13, and the pyrolysis gas discharged from the first outlet 13 can be introduced into the combustion chamber 21 for combustion. The air distribution port 26 cooperates with the auxiliary burner 27 to control the temperature in the combustion chamber 21. The discharge chamber 22 is located below the first outlet 13, and the discharge generated in the cylinder 11 can be discharged into the discharge chamber 22 through the first outlet 13. A discharge port 23 is provided at the bottom of the discharge chamber. In other words, the first outlet 13 of the cylinder 11 is located in the combustion chamber 2, and the pyrolysis gas discharged from the cylinder 11 rises to the combustion chamber 21 for combustion, and the discharged discharge can enter the discharge chamber 22 downward and then be discharged from the discharge port 23.

[0041] In some embodiments, the temperature in the combustion chamber 21 is greater than or equal to 850° C. The size of the combustion chamber 21 in the vertical direction is greater than or equal to a first preset value, and the residence time of the flue gas in the combustion chamber 21 is greater than or equal to 2 seconds. Thus, the generation of dioxins in the flue gas can be effectively suppressed.

[0042] like Figure 1 As shown, in some embodiments, the cross-sectional area of ​​the lower portion of the combustion chamber 21 increases upward, thereby facilitating the diffusion and combustion of the pyrolysis gas in the combustion chamber 21 .

[0043] The cross-sectional area of ​​at least part of the discharge chamber 22 decreases downward, thereby facilitating discharge.

[0044] like Figure 1 As shown, in some embodiments, the combustion chamber 2 includes a first side wall 24 and a second side wall 25 arranged opposite to each other in a first direction. The first outlet 13 of the barrel 11 extends into the combustion chamber 2 from the first side wall 24, the barrel 11 can rotate relative to the first side wall 24, and the air distribution port 26 and the auxiliary burner 27 are arranged on the second side wall 25. For example, the barrel 11 is connected to the first side wall 24 through a sliding seal.

[0045] The first portion of the first side wall 24 is located above the first outlet 13 , and the inner wall surface of the first portion defines a portion of the wall surface of the combustion chamber 21 . The distance between the lower portion of the first portion and the second side wall 25 increases upward.

[0046] The second portion of the first side wall 24 is located below the first outlet 13 , the inner wall surface of the second portion defines a portion of the wall surface of the discharge cavity 22 , and the distance between at least part of the second portion and the second side wall 25 decreases downward.

[0047] In some embodiments, the heat exchange part 4 is connected to at least part of the outer peripheral surface of the cylinder 11, and the cylinder 11 can rotate relative to the heat exchange part 4. Specifically, the heat exchange part 4 is arranged on the outer peripheral side of the cylinder 11, and the heat exchange part 4 and at least part of the outer peripheral surface of the cylinder 11 define a heat exchange cavity 41, and the heat exchange cavity 41 is arranged on the peripheral side of the cylinder 11, and the heat exchange cavity 41 has a second preset size in the first direction. As a result, the heat exchanger 41 can be coated on the peripheral side of the cylinder 11 to heat the material in the cylinder 11. The indirect heating method of the heat exchange cavity 41 is adopted to avoid the high-temperature flame from directly contacting the organic material to ignite the material or melt the material, which is conducive to the continuous stability and heating uniformity of the anoxic pyrolysis process.

[0048] like Figure 1 As shown, in some embodiments, the flue 3 of the combustion chamber 2 includes a first sub-flue 31 and a second sub-flue 32 , the second sub-flue 32 is connected to the combustion chamber 21 through the first sub-flue 31 , and the lower opening of the second sub-flue 32 is connected to the heat exchange chamber 41 .

[0049] In some embodiments, the outer surface of the heat exchange portion 4 is provided with a heat-insulating layer 44. For example, the heat-insulating layer 44 includes heat-insulating cotton.

[0050] like Figure 1 As shown, in some embodiments, the heat exchange part 4 has a smoke outlet 43 connected to the heat exchange cavity 41, the smoke outlet 43 is adjacent to the feed port 12 in the first direction, and the smoke inlet 42 is adjacent to the first outlet 13 in the first direction. The size ratio of the heat exchange cavity 41 to the cylinder 11 in the first direction is greater than or equal to 0.6. As a result, the heat exchange size of the heat exchange cavity 11 and the cylinder 11 can be larger. For example, the size ratio of the heat exchange cavity 41 to the cylinder 11 in the first direction is 0.9.

[0051] 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 orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0052] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0053] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. 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] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0055] In the present utility model, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean 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 utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0056] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are illustrative and cannot be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. An organic material pyrolysis device with self-sustaining heat supply, characterized in that: include: A rotary kiln, the rotary kiln comprising a cylinder, a support part and a driving part, the cylinder is rotatably arranged on the support part, the driving part can drive the cylinder to rotate on the support part, the cylinder has a feed inlet and a first outlet, the feed inlet is used to feed into the cylinder, and the pyrolysis gas and the discharge material generated in the cylinder can be discharged from the first outlet; A combustion chamber, wherein the inlet of the combustion chamber is connected to the first outlet, the combustion chamber is used to burn the pyrolysis gas introduced therein, and the combustion chamber is provided with an air distribution port and an auxiliary burner; The heat exchange part has a heat exchange cavity and a flue gas inlet, the flue gas inlet is connected to the flue of the combustion chamber, the flue gas generated by the combustion chamber can pass into the heat exchange cavity through the flue gas inlet, and the flue gas in the heat exchange cavity is used to heat the material in the cylinder.

2. The organic material pyrolysis device with self-sustaining heat supply according to claim 1 is characterized in that: The feed inlet and the first outlet are opened on both sides of the cylinder in the first direction; The first outlet of the cylinder extends into the combustion chamber, and the cylinder can rotate relative to the combustion chamber; The combustion chamber comprises a combustion chamber and a discharge chamber, both of which are connected to the first outlet, the combustion chamber is located above the first outlet, the pyrolysis gas discharged from the first outlet can be introduced into the combustion chamber for combustion, the air distribution port cooperates with the auxiliary burner to control the temperature in the combustion chamber, the discharge chamber is located below the first outlet, the discharge generated in the cylinder can be discharged into the discharge chamber through the first outlet, and a discharge port is provided at the bottom of the discharge chamber.

3. The organic material pyrolysis device with self-sustaining heat supply according to claim 2 is characterized in that: The temperature in the combustion chamber is greater than or equal to 850°C; The size of the combustion chamber in the up-down direction is greater than or equal to a first preset value, and the residence time of smoke in the combustion chamber is greater than or equal to 2 seconds.

4. The organic material pyrolysis device with self-sustaining heat supply according to claim 2 is characterized in that: The cross-sectional area of ​​the lower portion of the combustion chamber increases upward; The cross-sectional area of ​​at least part of the discharge cavity decreases downward.

5. The organic material pyrolysis device with self-sustaining heat supply according to claim 4 is characterized in that: The combustion chamber comprises a first side wall and a second side wall arranged opposite to each other in the first direction, the first outlet of the cylinder extends into the combustion chamber from the first side wall, the cylinder can rotate relative to the first side wall, and the air distribution port and the auxiliary burner are arranged on the second side wall; The first portion of the first side wall is located above the first outlet, the inner wall surface of the first portion defines a portion of the wall surface of the combustion chamber, and the distance between the lower portion of the first portion and the second side wall increases upwards; The second portion of the first side wall is located below the first outlet, the inner wall surface of the second portion defines a portion of the wall surface of the discharge cavity, and the distance between at least a portion of the second portion and the second side wall decreases downward.

6. The organic material pyrolysis device with self-sustaining heat supply according to any one of claims 2 to 5, characterized in that: The heat exchange portion is in contact with at least a portion of the outer peripheral surface of the cylinder, and the cylinder is rotatable relative to the heat exchange portion.

7. The organic material pyrolysis device with self-sustaining heat supply according to claim 6 is characterized in that: The heat exchange part is arranged on the outer peripheral side of the cylinder, and the heat exchange part and at least part of the outer peripheral surface of the cylinder define the heat exchange cavity. The heat exchange cavity is arranged on the peripheral side of the cylinder, and the heat exchange cavity has a second preset size in the first direction.

8. The organic material pyrolysis device with self-sustaining heat supply according to claim 7 is characterized in that: The flue of the combustion chamber includes a first sub-flue and a second sub-flue, the second sub-flue is connected to the combustion chamber through the first sub-flue, and the lower opening of the second sub-flue is connected to the heat exchange chamber.

9. The organic material pyrolysis device with self-sustaining heat supply according to claim 7, characterized in that: The outer surface of the heat exchange part is provided with a heat insulation layer.

10. The organic material pyrolysis device with self-sustaining heat supply according to claim 7, characterized in that: The heat exchange portion has a smoke outlet communicated with the heat exchange cavity, the smoke outlet is adjacent to the feed inlet in the first direction, and the smoke inlet is adjacent to the first outlet in the first direction; A size ratio of the heat exchange cavity to the cylinder in the first direction is greater than or equal to 0.6.

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