Temperature-adjustable heating rotary kiln system

Abstract

The temperature-adjustable heating rotary kiln system comprises a rotary kiln, the rotary kiln comprises a cylinder body, a supporting part and a driving part, and the cylinder body is provided with a feeding port, a first outlet and a second 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 auxiliary combustor is arranged on the combustion chamber and used for combusting auxiliary materials; the heat exchange part is provided with a heat exchange cavity and a flue gas inlet, the flue gas inlet is used for introducing flue gas, and the flue gas in the heat exchange cavity is used for heating materials in the barrel; an inlet of the flue is communicated with an outlet of the combustion chamber, an outlet of the flue is communicated with the flue gas inlet, and flue gas generated by the combustion chamber can be introduced into the heat exchange cavity through the flue; and the temperature adjusting device is used for adjusting at least one of the temperature and the flow of the flue gas discharged from the flue. The temperature-adjustable heating rotary kiln system has the advantages of being convenient to reduce energy consumption and convenient to pyrolyze materials.

Description

Technical Field

[0001] The utility model relates to the technical field of heating rotary kilns, in particular to a temperature-adjustable heating rotary kiln system. Background Art

[0002] In the related art, the heating rotary kiln mostly controls the temperature in the kiln by adjusting the burner load, and there is no adjustable temperature control system for the high-temperature flue gas of the indirect heating rotary kiln. Moreover, the adjustment is mainly made for low furnace temperature conditions, and there is no means to reduce the high furnace temperature. It is impossible to adjust the temperature of different reaction areas according to the characteristics of different materials and different heating reaction requirements. 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 a temperature-adjustable heating rotary kiln system.

[0004] The temperature-adjustable heating rotary kiln system of the utility model embodiment 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, a first outlet and a second outlet, the feed inlet is used to feed into the cylinder, the pyrolysis gas generated in the cylinder can be discharged from the first outlet, and the discharge in the cylinder is discharged from the second 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 an auxiliary burner is provided on the combustion chamber, and the auxiliary burner is used to burn auxiliary materials;

[0007] A heat exchange part, wherein the heat exchange part has a heat exchange cavity and a smoke inlet, wherein the smoke inlet is used to introduce smoke, and the smoke in the heat exchange cavity is used to heat the material in the cylinder;

[0008] A flue, wherein the inlet of the flue is connected to the outlet of the combustion chamber, and the outlet of the flue is connected to the flue gas inlet, so that the flue gas generated by the combustion chamber can pass into the heat exchange cavity through the flue;

[0009] A temperature regulating device, at least part of which is arranged on the flue, and the temperature regulating device is used to regulate at least one of the temperature and flow rate of the flue gas discharged from the flue.

[0010] Therefore, the temperature-adjustable heating rotary kiln system according to the embodiment of the utility model has the advantages of reducing energy consumption and facilitating the thermal decomposition of materials.

[0011] In some embodiments, the temperature control device includes

[0012] A smoke regulating valve, the smoke regulating valve is arranged on the smoke duct, and the smoke regulating valve is used to adjust the flow rate of smoke discharged from the outlet of the smoke duct;

[0013] The temperature reduction regulating part comprises a delivery pipe, the outlet of the delivery pipe extends into the flue, and the delivery pipe is used to pass the temperature reduction fluid into the flue.

[0014] In some embodiments, the flue includes a main pipe and multiple branch pipes, the inlet of the main pipe constitutes the inlet of the flue, and the outlets of the multiple branch pipes constitute the outlets of the flue, the flue gas in the main pipe can pass into the multiple branch pipes, the outlet of each branch pipe is connected to the heat exchange chamber, each branch pipe is provided with the flue gas regulating valve, and the outlet of the delivery pipe extends into at least part of the multiple branch pipes.

[0015] In some embodiments, the feed port is opened at the first end of the cylinder in the first direction, and the first outlet and the second outlet are opened at the second end of the cylinder in the first direction;

[0016] The cylinder is sequentially divided into a drying zone, a main heating reaction zone and a reaction continuation zone in the first direction away from the feed port;

[0017] The heat exchange part is connected to at least part of the outer circumference of the cylinder, the cylinder can rotate relative to the heat exchange part, the heat exchange cavity has a first preset size in the first direction, and the two ends of the heat exchange cavity in the first direction are located on both sides of the main heating reaction zone.

[0018] In some embodiments, the heat exchange portion is arranged on the outer peripheral side of the cylinder, and the heat exchange portion and at least a portion of the outer peripheral surface of the cylinder define the heat exchange cavity, and the heat exchange cavity is arranged on the peripheral side of the cylinder. The heat exchange portion is provided with a smoke outlet, and the smoke outlet is connected with the heat exchange cavity. The smoke outlet is adjacent to the feed port in the first direction, and the smoke outlet, the main heating reaction zone and the reaction continuation zone are arranged sequentially in the first direction.

[0019] In some embodiments, the heat exchange portion is divided into a first part, a second part and a third part in sequence in the first direction away from the feed port, the first part is arranged opposite to the drying area of ​​the cylinder, the second part is arranged opposite to the main heating reaction area of ​​the cylinder, the third part is arranged opposite to the reaction continuous area of ​​the cylinder, and the second part and the third part are both provided with the flue gas inlet;

[0020] At least part of the plurality of branch pipes are spaced apart in the first direction, and at least part of the plurality of branch pipes are in communication with the smoke inlet of the second part and the smoke inlet on the third part.

[0021] In some embodiments, the plurality of branch pipes include a first branch pipe and a second branch pipe, wherein an outlet of the first branch pipe is connected to the smoke inlet on the third portion, and an outlet of the second branch pipe is connected to the smoke inlet on the second portion.

[0022] In some embodiments, the plurality of branch pipes include a third branch pipe, the inlet of the third branch pipe is connected to the second branch pipe, the outlet of the third branch pipe is connected to the flue gas inlet on the third part, and the outlet of the third branch pipe is located at an end of the third part adjacent to the main heating reaction zone in the first direction;

[0023] The outlet of the first branch pipeline is located at an end of the third portion away from the main heating reaction zone in the first direction;

[0024] The outlet of the second branch pipe is located at an end of the second portion adjacent to the reaction continuing zone in the first direction.

[0025] In some embodiments, the first branch pipe, the second branch pipe and the third branch pipe are all provided with the flue gas regulating valve;

[0026] There are multiple delivery pipes, and the first branch pipe and the second branch pipe are both provided with the delivery pipe extending therein.

[0027] In some embodiments, the outer surface of the heat exchange portion is provided with a heat-insulating layer;

[0028] The delivery pipe is used to deliver cooling water, and a cooling water regulating valve for controlling opening and closing is provided on the delivery pipe. A nozzle located in the flue is provided at the outlet of the delivery pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of a temperature-adjustable heating rotary kiln system according to an embodiment of the utility model.

[0030] Reference numerals:

[0031] 1. rotary kiln, 11. cylinder, 12. feed port, 13. first outlet, 14. second outlet, 15. drying zone, 16. main heating reaction zone, 17. reaction continuous zone;

[0032] 2. Combustion chamber, 21. Auxiliary burner;

[0033] 3. heat exchange part, 31. heat exchange chamber, 32. flue gas inlet, 33. flue gas outlet, 34. first part, 35. second part, 36. third part;

[0034] 4. Flue, 41. Main pipeline, 42. First branch pipeline, 43. Second branch pipeline, 44. Third branch pipeline, 45. Flue gas regulating valve, 46. Delivery pipe, 47. Cooling water regulating valve. DETAILED DESCRIPTION

[0035] 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.

[0036] The following describes the temperature-adjustable heating rotary kiln system of the utility model embodiment with reference to the accompanying drawings. Figure 1 As shown, the temperature-adjustable heating rotary kiln system according to the embodiment of the utility model includes a rotary kiln 1, a combustion chamber 2, a heat exchange part 3, a flue 4 and a temperature adjustment device.

[0037] The rotary kiln 1 includes a cylinder 11, a support part and a driving part. The cylinder 11 is rotatably arranged on the support part, and the driving part can drive the cylinder 11 to rotate on the support part. The cylinder 11 has a feed port 12, a first outlet 13 and a second outlet 14. The feed port 12 is used to feed into the cylinder 11, and the pyrolysis gas generated in the cylinder 11 can be discharged from the first outlet 13, and the discharge in the cylinder 11 is discharged from the second outlet 14. Specifically, the rotary kiln 1 is a common pyrolysis equipment for treating organic materials (sludge, agricultural residues, livestock manure, oil-containing hazardous waste, etc.). The material enters the cylinder 11 through the feed port 12 and is pyrolyzed to generate pyrolysis gas, which can be discharged through the first outlet 13, and the discharge can be discharged from the second outlet 14.

[0038] 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 auxiliary burner 21, and the auxiliary burner 21 is used to burn auxiliary materials. The combustion chamber 2 is convenient for monitoring the flue gas temperature, flow rate and other conditions. The auxiliary burner 21 provided in the combustion chamber 2 can be used to adjust the temperature of the flue gas so that the flue gas temperature in the combustion chamber 2 reaches a set value. When the pyrolysis gas is insufficient, the auxiliary burner 21 supplies other auxiliary fuels (such as fuel oil, gas, solid fuel, etc.) for auxiliary combustion, so that the combustion high-temperature flue gas reaches a set temperature.

[0039] The heat exchange part 3 has a heat exchange cavity 31 and a flue gas inlet 32. The flue gas inlet 32 ​​is used to pass flue gas. The flue gas in the heat exchange cavity 31 is used to heat the material in the cylinder 11. The inlet of the flue 4 is connected to the outlet of the combustion chamber 2. The outlet of the flue 4 is connected to the flue gas inlet 32. The flue gas generated by the combustion chamber 2 can be passed into the heat exchange cavity 31 through the flue 4. As a result, the material in the cylinder 11 is subjected to the heat transferred from the flue gas in the heat exchange cavity 31, and undergoes anoxic pyrolysis reaction. The generated solid biochar falls from the second outlet 14 and is collected. The generated gaseous pyrolysis gas enters the combustion chamber 2 through the first outlet 13 for combustion. The high-temperature flue gas after combustion enters the heat exchange cavity 41 through the flue 4 again, and indirectly transfers heat to the material in the cylinder 11.

[0040] When the flue gas in the heat exchange chamber 31 heats the material in the cylinder 11, the driving part can drive the cylinder 11 to rotate on the supporting part so that the material in the cylinder 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 flue gas 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.

[0041] At least part of the temperature regulating device is arranged on the flue 4, and the temperature regulating device is used to regulate at least one of the temperature and flow rate of the flue gas discharged from the flue 4. Specifically, the temperature regulating device is used to regulate at least one of the temperature and flow rate of the flue gas discharged from the flue 4, including a: the temperature regulating device is used to regulate the temperature of the flue gas discharged from the flue 4, so that the temperature of the flue gas entering the heat exchange chamber 31 is suitable for the pyrolysis of the material in the cylinder 11; b: the temperature regulating device is used to regulate the flow rate of the flue gas discharged from the flue 4, and by regulating the flow rate of the flue gas, the amount of the flue gas entering the heat exchange chamber 31 can be regulated, thereby facilitating the control of the heat exchange amount of the flue gas in the heat exchange chamber 31, so that the temperature of the flue gas entering the heat exchange chamber 31 is suitable for the pyrolysis of the material in the cylinder 11; c: the temperature regulating device is used to regulate the temperature and flow rate of the flue gas discharged from the flue 4, so that the temperature and amount of the flue gas entering the heat exchange chamber 31 can be regulated by directly regulating the flue gas temperature and by regulating the flow rate discharged from the flue 4, so that the temperature of the flue gas entering the heat exchange chamber 31 is suitable for the pyrolysis of the material in the cylinder 11. The temperature regulating device regulates the temperature of the flue gas in the flue 4 , thereby regulating the temperature in the cylinder 11 , thereby facilitating the pyrolysis of the material in the cylinder 11 .

[0042] Therefore, the temperature-adjustable heating rotary kiln system according to the embodiment of the utility model has the advantages of reducing energy consumption and facilitating the thermal decomposition of materials.

[0043] like Figure 1 As shown, in some embodiments, the temperature regulating device includes a flue gas regulating valve 45 and a temperature reduction regulating part, that is, the temperature regulating device is used to adjust the temperature and flow rate of the flue gas discharged from the flue 4.

[0044] The flue gas regulating valve 45 is provided on the flue 4, and is used to regulate the flow rate of the flue gas discharged from the outlet of the flue 4. The temperature reduction regulating part includes a delivery pipe 46, the outlet of which extends into the flue 4, and the delivery pipe 46 is used to introduce a temperature reduction fluid into the flue 4, and the temperature reduction fluid is introduced into the high-temperature flue gas to reduce the temperature of the high-temperature flue gas, so as to be suitable for the pyrolysis of the material in the cylinder 11. For example, the temperature reduction fluid includes at least one of water and cooling gas.

[0045] like Figure 1 As shown, in some embodiments, the feed port 12 is opened at the first end of the barrel 11 in the first direction, and the first outlet 13 and the second outlet 14 are opened at the second end of the barrel 11 in the first direction. The first direction can be a left-right direction, and the left-right direction and the up-down direction are shown by arrows in the figure. For example, the feed port 12 is opened at the left end of the barrel 11, and the first outlet 13 and the second outlet 14 are opened at the right end of the barrel 11. The first outlet 13 is located above the second outlet 14, and the pyrolysis gas can be discharged from the first outlet 13 and passed upward into the combustion chamber 2 for combustion.

[0046] The cylinder 11 is divided into a drying zone 15, a main heating reaction zone 16 and a reaction continuation zone 17 in the first direction away from the feed port 12. Specifically, it is divided into three reaction zones (drying zone 15, main heating reaction zone 16 and reaction continuation zone 17) according to the reaction characteristics of the material, and the temperatures required for the drying zone 15, the main heating reaction zone 16 and the reaction continuation zone 17 are different. The material enters the cylinder 11 through the feed port 12, and turns over and reacts in the kiln under an oxygen-deficient heating environment, and sequentially experiences the drying zone 15, the main heating reaction zone 16 and the reaction continuation zone 17. The carbonized material generated after treatment is finally discharged through the second outlet 14. It can adapt to different material characteristics and heating reaction requirements, and is flexible to adjust to achieve the best material processing effect. For example, the cylinder 11 is divided into a drying zone 15, a main heating reaction zone 16 and a reaction continuation zone 17 from left to right.

[0047] In some embodiments, the heat exchange portion 3 is connected to at least part of the outer circumference of the cylinder 11, the cylinder 11 can rotate relative to the heat exchange portion 3, the heat exchange cavity 31 has a first preset size in the first direction, and the two ends of the heat exchange cavity 31 in the first direction are located on both sides of the main heating reaction zone 16. This facilitates the flue gas in the heat exchange cavity 31 to heat the material in the main heating reaction zone 16. For example, the two ends of the heat exchange cavity 31 in the left and right directions are located on both sides of the main heating reaction zone 16.

[0048] like Figure 1As shown, in some embodiments, the heat exchange part 3 is arranged around the outer peripheral side of the cylinder 11, and the heat exchange part 3 and at least part of the outer peripheral surface of the cylinder 11 define a heat exchange chamber 31. The heat exchange chamber 31 is arranged around the peripheral side of the cylinder 11, and a smoke outlet 33 is provided on the heat exchange part 3. The smoke outlet 33 is connected to the heat exchange chamber 31. The smoke outlet 33 is adjacent to the feed port 12 in the first direction. The smoke outlet 33, the main heating reaction zone 16 and the reaction continuous zone 17 are arranged in sequence in the first direction. As a result, the heat exchange part 3 can be covered on the peripheral side of the cylinder 11 to heat the material in the cylinder 11. The indirect heating method of the heat exchange chamber 31 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. And the smoke at one end of the heat exchanger 31 away from the feed port 12 exchanges heat with the reaction continuous zone 17 and the main heating reaction zone 16 in the first direction and is discharged from the smoke outlet 33. For example, the feed port 12, the flue gas outlet 33, the main heating reaction zone 16 and the reaction continuous zone 17 are arranged in sequence from left to right. The high-temperature flue gas moves to the left in the heat exchange chamber 31 and is discharged from the flue gas outlet 33. The temperature of the main heating reaction zone 16 is greater than or equal to 350°C and less than or equal to 400°C.

[0049] like Figure 1 As shown, in some embodiments, the heat exchange part 3 is divided into a first part 34, a second part 35 and a third part 36 in the first direction away from the feed port 12. The first part 34 is arranged opposite to the drying zone 15 of the cylinder 11 (in the inner and outer directions), the second part 35 is arranged opposite to the main heating reaction zone 16 of the cylinder 11 (in the inner and outer directions), and the third part 36 is arranged opposite to the reaction continuous zone 17 of the cylinder 11 (in the inner and outer directions). Both the second part 35 and the third part 36 are provided with a flue gas inlet 32. The high-temperature flue gas entering the heat exchange chamber 31 through the flue gas inlet 32 ​​on the second part 35 is convenient for heating the material in the main heating reaction zone 16 of the cylinder 11. The high-temperature flue gas entering the heat exchange chamber 31 through the flue gas inlet 32 ​​on the third part 36 is convenient for heating the material in the reaction continuous zone 17 of the cylinder 11 and then heating the material in the main heating reaction zone 16. For example, the first part 34 , the second part 35 and the third part 36 are all annular structures, the first part 34 is arranged around the drying zone 15 , the second part 35 is arranged around the main heating reaction zone 16 , and the third part 36 is arranged around the reaction continuation zone 17 .

[0050] like Figure 1As shown, in some embodiments, the flue 4 includes a main pipe 41 and a plurality of branch pipes. The inlet of the main pipe 41 constitutes the inlet of the flue 4, and the outlets of the plurality of branch pipes constitute the outlets of the flue 4. The flue gas in the main pipe 41 can pass into the plurality of branch pipes, and the outlet of each branch pipe is connected to the heat exchange chamber 31. A flue gas regulating valve 45 is provided on each branch pipe, and the outlet of the delivery pipe 46 extends into at least part of the plurality of branch pipes. The outlets of the plurality of branch pipes can be flexibly arranged, so as to facilitate heating of the cavities (drying zone 15, main heating reaction zone 16 and reaction continuation zone 17) at different positions in the cylinder 11. A flue gas regulating valve 45 is provided on each flue gas branch (a plurality of branch pipes), and the main temperature control effect is achieved by distributing the flue gas flow. The outlet of the delivery pipe 46 of the cooling and regulating part is located downstream of the flue gas regulating valve 45. A cooling and regulating part is provided behind the flue gas regulating valve 45. When the temperature of the corresponding reaction zone exceeds the temperature, the fine-tuning effect can be achieved by adjusting the amount of cooling water injection (the opening of the cooling water regulating valve 47).

[0051] At least part of the plurality of branch pipes are arranged at intervals in the first direction, and at least part of the plurality of branch pipes are connected with the smoke inlet 32 ​​of the second part 35 and the smoke inlet 32 ​​of the third part 36. Thus, the smoke can enter the heat exchange chamber 31 through the smoke inlet 32 ​​to the position around the main heating reaction zone 16 and the reaction continuous zone 17. For example, at least part of the plurality of branch pipes are arranged at intervals in the left-right direction.

[0052] like Figure 1 As shown, in some embodiments, the plurality of branch pipes include a first branch pipe 42 and a second branch pipe 43. The outlet of the first branch pipe 42 is connected to the flue gas inlet 32 ​​on the third portion 36, so that the high-temperature flue gas discharged from the first branch pipe 42 can be directly introduced into the heat exchange chamber 31 at a position arranged in the reaction continuous zone 17, so as to ensure the temperature at the reaction continuous zone 17. The outlet of the second branch pipe 43 is connected to the flue gas inlet 32 ​​on the second portion 35, so that the high-temperature flue gas discharged from the second branch pipe 43 can be directly introduced into the heat exchange chamber 31 at a position arranged in the main heating reaction zone 16, so as to ensure the temperature at the main heating reaction zone 16.

[0053] like Figure 1 As shown, in some embodiments, the plurality of branch pipes include a third branch pipe 44. The inlet of the third branch pipe 44 is connected to the second branch pipe 43, and the outlet of the third branch pipe 44 is connected to the smoke inlet 32 ​​on the third part 36. Specifically, the diameter of the third branch pipe 44 is smaller than the diameter of the second branch pipe 43. The third branch pipe 44 can divert the smoke in the second branch pipe 43.

[0054] The outlet of the third branch pipe 44 is located at one end of the third part 36 adjacent to the main heating reaction zone 16 in the first direction, so that the outlet of the third branch pipe 44 can heat the main heating reaction zone 16 after directly heating the reaction continuation zone 17, and then be discharged from the flue gas outlet 33.

[0055] The outlet of the first branch pipe 42 is located at an end of the third part 36 away from the main heating reaction zone 16 in the first direction, so that the flue gas discharged from the outlet of the first branch pipe 42 can heat the reaction continuous zone 17 during the process of moving toward the flue gas outlet 33.

[0056] The outlet of the second branch pipe 43 is located at one end of the second portion 35 adjacent to the reaction continuous zone 17 in the first direction, so that the flue gas discharged from the outlet of the second branch pipe 43 can heat the main heating reaction zone 16 in the process of moving toward the flue gas outlet 33. For example, the third branch pipe 44 is located at the left end of the third portion 36, the outlet of the first branch pipe 42 is located at the right end of the third portion 36, and the outlet of the second branch pipe 43 is located at the right end of the second portion 35.

[0057] like Figure 1 As shown, in some embodiments, the first branch pipe 42, the second branch pipe 43 and the third branch pipe 44 are each provided with a smoke regulating valve 45, so that the smoke flow discharged from the first branch pipe 42, the second branch pipe 43 and the third branch pipe 44 can be adjusted.

[0058] There are multiple delivery pipes 46, and the first branch pipe 42 and the second branch pipe 43 are both provided with delivery pipes 46 extending therein. Specifically, the delivery pipe 46 is used to deliver cooling water, and a cooling water regulating valve 47 for controlling opening and closing is provided on the delivery pipe 46. A nozzle located in the flue 4 is provided at the outlet of the delivery pipe 46, so that the temperature of the flue gas discharged from the first branch pipe 42 and the second branch pipe 43 can be adjusted (reduced).

[0059] In some embodiments, a heat-insulating layer is provided on the outer surface of the heat exchange portion 31. For example, the heat-insulating layer includes heat-insulating cotton.

[0060] 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.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] 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.

[0065] 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. A temperature-adjustable heating rotary kiln system, 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, a first outlet and a second outlet, the feed inlet is used to feed into the cylinder, the pyrolysis gas generated in the cylinder can be discharged from the first outlet, and the discharge in the cylinder is discharged from the second 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 an auxiliary burner is provided on the combustion chamber, and the auxiliary burner is used to burn auxiliary materials; A heat exchange part, wherein the heat exchange part has a heat exchange cavity and a smoke inlet, wherein the smoke inlet is used to introduce smoke, and the smoke in the heat exchange cavity is used to heat the material in the cylinder; A flue, wherein the inlet of the flue is connected to the outlet of the combustion chamber, and the outlet of the flue is connected to the flue gas inlet, so that the flue gas generated by the combustion chamber can pass into the heat exchange cavity through the flue; A temperature regulating device, at least part of which is arranged on the flue, and the temperature regulating device is used to regulate at least one of the temperature and flow rate of the flue gas discharged from the flue.

2. The temperature-adjustable heating rotary kiln system according to claim 1, characterized in that: The temperature regulating device comprises A smoke regulating valve, the smoke regulating valve is arranged on the smoke duct, and the smoke regulating valve is used to adjust the flow rate of smoke discharged from the outlet of the smoke duct; The temperature reduction regulating part comprises a delivery pipe, the outlet of the delivery pipe extends into the flue, and the delivery pipe is used to pass the temperature reduction fluid into the flue.

3. The temperature-adjustable heating rotary kiln system according to claim 2, characterized in that: The flue includes a main pipe and a plurality of branch pipes, the inlet of the main pipe constitutes the inlet of the flue, the outlets of the plurality of branch pipes constitute the outlets of the flue, the flue gas in the main pipe can flow into the plurality of branch pipes, the outlet of each branch pipe is connected to the heat exchange chamber, each branch pipe is provided with the flue gas regulating valve, and the outlet of the delivery pipe extends into at least part of the plurality of branch pipes.

4. The temperature-adjustable heating rotary kiln system according to claim 3, characterized in that: The feed inlet is opened at the first end of the cylinder in the first direction, and the first outlet and the second outlet are opened at the second end of the cylinder in the first direction; The cylinder is sequentially divided into a drying zone, a main heating reaction zone and a reaction continuation zone in the first direction away from the feed port; The heat exchange part is connected to at least part of the outer circumference of the cylinder, the cylinder can rotate relative to the heat exchange part, the heat exchange cavity has a first preset size in the first direction, and the two ends of the heat exchange cavity in the first direction are located on both sides of the main heating reaction zone.

5. The temperature-adjustable heating rotary kiln system according to claim 4, 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. The heat exchange part is provided with a smoke outlet, and the smoke outlet is connected with the heat exchange cavity. The smoke outlet is adjacent to the feed port in the first direction, and the smoke outlet, the main heating reaction zone and the reaction continuation zone are arranged in sequence in the first direction.

6. The temperature-adjustable heating rotary kiln system according to claim 4 or 5, characterized in that: The heat exchange part is divided into a first part, a second part and a third part in sequence in the first direction away from the feed port, the first part is arranged opposite to the drying area of ​​the cylinder, the second part is arranged opposite to the main heating reaction area of ​​the cylinder, the third part is arranged opposite to the reaction continuous area of ​​the cylinder, and the second part and the third part are both provided with the flue gas inlet; At least part of the plurality of branch pipes are spaced apart in the first direction, and at least part of the plurality of branch pipes are in communication with the smoke inlet of the second part and the smoke inlet on the third part.

7. The temperature-adjustable heating rotary kiln system according to claim 6, characterized in that: The plurality of branch pipes include a first branch pipe and a second branch pipe, wherein an outlet of the first branch pipe is connected to the smoke inlet on the third portion, and an outlet of the second branch pipe is connected to the smoke inlet on the second portion.

8. The temperature-adjustable heating rotary kiln system according to claim 7, characterized in that: The plurality of branch pipes include a third branch pipe, the inlet of the third branch pipe is connected to the second branch pipe, the outlet of the third branch pipe is connected to the flue gas inlet on the third part, and the outlet of the third branch pipe is located at an end of the third part adjacent to the main heating reaction zone in the first direction; The outlet of the first branch pipeline is located at an end of the third portion away from the main heating reaction zone in the first direction; The outlet of the second branch pipe is located at an end of the second portion adjacent to the reaction continuing zone in the first direction.

9. The temperature-adjustable heating rotary kiln system according to claim 8, characterized in that: The first branch pipe, the second branch pipe and the third branch pipe are all provided with the flue gas regulating valve; There are multiple delivery pipes, and the first branch pipe and the second branch pipe are both provided with the delivery pipe extending therein.

10. The temperature-adjustable heating rotary kiln system according to claim 9, characterized in that: The outer surface of the heat exchange part is provided with a heat insulation layer; The delivery pipe is used to deliver cooling water, and a cooling water regulating valve for controlling opening and closing is provided on the delivery pipe. A nozzle located in the flue is provided at the outlet of the delivery pipe.

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