Energy-saving carbon kiln

Abstract

The utility model discloses an energy-saving carbon kiln. The energy-saving carbon kiln comprises a kiln body, a preheating fan, a burner, a cooling mechanism, an air curtain, a waste heat converter, a smoke filter and a storage battery, the preheating fan, the burner and the cooling mechanism are respectively arranged at a preheating section, a firing section and a cooling section in the kiln body; air curtains are arranged at the joint of the carbon kiln preheating section and the carbon kiln firing section and the joint of the carbon kiln firing section and the carbon kiln cooling section; the waste heat converter conducts thermoelectric conversion on hot smoke of the cooling section of the carbon kiln, the hot smoke of the kiln body is recycled through the waste heat converter, and a refrigerant in an evaporator arranged in the cooling mechanism is cooled through the waste heat converter. The power consumption of the carbon kiln is reduced, and electric energy generated by the waste heat converter is stored in a storage battery or directly used as auxiliary lighting electricity.

Description

Technical Field

[0001] The utility model belongs to the technical field of kilns and supporting equipment, and particularly relates to an energy-saving carbon kiln. Background Art

[0002] During the firing process of a carbon kiln, a large amount of energy consumption is required. Especially in the main firing area of the carbon kiln, the internal temperature is above 1200 degrees Celsius. After firing, the fired products need to be cooled, and the flue gas needs to be cooled, filtered and discharged. This causes a large amount of energy consumption during the whole process of using the carbon kiln, and the direct discharge of the dissipated heat results in a large waste of energy. Summary of the Invention

[0003] The purpose of the present invention is to solve the above problems, and provide an energy-saving carbon kiln.

[0004] An energy-saving carbon kiln includes: a kiln body, a preheating blower, a burner, a cooling mechanism, an air curtain, a waste heat converter, a flue gas filter, and a storage battery. The kiln body includes: a carbon kiln preheating section, a carbon kiln firing section, and a carbon kiln cooling section. The carbon kiln preheating section, the carbon kiln firing section, and the carbon kiln cooling section are connected in sequence and communicate with each other internally. The preheating blower is arranged on the top wall inside the carbon kiln preheating section; the burner is arranged on the inner top wall of the carbon kiln firing section; the cooling mechanism is arranged on the inner top wall of the carbon kiln cooling section; air curtains are arranged at the joints between the carbon kiln preheating section and the carbon kiln firing section and between the carbon kiln firing section and the carbon kiln cooling section. The waste heat converter performs thermoelectric conversion on the hot flue gas in the carbon kiln cooling section, and an evaporator is arranged in the cooling mechanism. The refrigerant in the evaporator is cooled by the waste heat converter; the electric energy generated by the waste heat converter is stored in the storage battery or directly used as auxiliary lighting power.

[0005] A conveying track and a kiln car are also arranged inside the kiln body. The conveying track is laid through the inner bottom surfaces of the carbon kiln preheating section, the carbon kiln firing section, and the carbon kiln cooling section; the kiln car travels on the conveying track.

[0006] The cooling mechanism includes: a cooling machine housing, an evaporator, a fan blade, and a fan motor. An air outlet is arranged below the cooling machine housing, and the evaporator is arranged inside the air outlet; the fan blade is a cross-flow fan and is arranged above the evaporator; the fan blade is driven to rotate by the fan motor.

[0007] The evaporator includes: evaporator fins and an evaporator refrigerant pipe. The evaporator refrigerant pipe is inserted through the evaporator fins in an S shape; the evaporator refrigerant pipe is connected to the waste heat converter through a pipeline.

[0008] The described waste heat converter is provided with: a converter housing, a flue gas pipe, a flue gas drainage pump, a thermoelectric generation chip, a cooling pipe, a refrigerant pump, and a heat-conducting filler; the converter housing includes: an upper cavity, a lower cavity, and a heat exchanger foot support; the upper cavity and the lower cavity are hermetically and fixedly connected; the heat exchanger foot support is provided at the lower end of the lower cavity; a main flue gas pipe is provided in the flue gas pipe; the heat-conducting filler is filled in the lower cavity and covers the body of the main flue gas pipe; the cooling pipe is vacuum-insulated in the upper cavity; the thermoelectric generation chip is provided between the flue gas pipe and the cooling pipe; a smoke exhaust port is further provided on the top wall of the firing section of the carbon kiln, and the flue gas pipe is sequentially connected to the smoke exhaust port through the flue gas drainage pump and a smoke guiding pipe; the cooling pipe is connected to the refrigerant pipe of the evaporator through the refrigerant pump; the cooling pipe is provided with a coolant, and the coolant circulates between the cooling pipe and the evaporator through the refrigerant pump.

[0009] The upper end surface of the heat dissipation fin of the described flue gas pipe and the lower end surface of the fin of the cooling pipe are both smooth planes; the thermoelectric generation chip is provided with a heat collection end and a cold end, and the end surface of the heat collection end is attached to the upper end surface of the heat dissipation fin of the flue gas pipe; the end surface of the cold end of the power generation chip is attached to the lower end surface of the fin of the cooling pipe 67.

[0010] A plurality of thermoelectric generation chips are provided, and the plurality of thermoelectric generation chips are connected in parallel and electrically connected to the storage battery through a charging module.

[0011] The heat-conducting filler is a heat-insulating mortar containing 40% chlorine oxide.

[0012] The described flue gas filter includes: a filter pipe body and a filter element; the filter element is sleeved in the flue gas filter.

[0013] A PLC controller is provided beside the kiln body, and the PLC controller is electrically connected to the conveying track, the fan motor, the air curtain, the flue gas drainage pump, the refrigerant pump, and the storage battery respectively.

[0014] This technical solution provides an energy-saving carbon kiln, including: a kiln body, a preheating blower, a burner, a cooling mechanism, an air curtain, a waste heat converter, a flue gas filter, and a storage battery; the preheating blower, the burner, and the cooling mechanism are respectively provided in the preheating section, the firing section, and the cooling section of the kiln body; air curtains are provided at the connection between the preheating section and the firing section of the carbon kiln and at the connection between the firing section and the cooling section of the carbon kiln; the waste heat converter performs thermoelectric conversion on the hot flue gas in the cooling section of the carbon kiln, and the hot flue gas of the kiln body is recycled through the waste heat converter, and the refrigerant in the evaporator provided in the cooling mechanism is cooled by the waste heat converter; the power consumption of the carbon kiln is reduced, and the electric energy generated by the waste heat converter is stored in the storage battery or directly used as auxiliary lighting power. Description of the Drawings

[0015] Figure 1 It is an overall schematic diagram of an energy-saving carbon kiln of the present utility model;

[0016] Figure 2It is the overall schematic diagram of the cooling mechanism of an energy-saving carbon kiln of the present utility model;

[0017] Figure 3 It is the structural sectional view of the cooling mechanism of an energy-saving carbon kiln of the present utility model;

[0018] Figure 4 It is the overall schematic diagram of the waste heat converter of an energy-saving carbon kiln of the present utility model;

[0019] Figure 5 It is the structural sectional view of the waste heat converter of an energy-saving carbon kiln of the present utility model;

[0020] Figure 6 It is the connection of the flue gas pipe, thermoelectric generation sheet and cooling pipe of an energy-saving carbon kiln of the present utility model

[0021] schematic diagram;

[0022] Figure 7 It is the structural sectional view of the flue gas filter of an energy-saving carbon kiln of the present utility model. Specific implementation manners

[0023] Next, in combination with the attached drawings of the technical solution, the technical solution will be described clearly and completely. The described embodiments are only a part of the technical solution, rather than all of the embodiments. Based on the technical solution, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model. Embodiment

[0024] See Figures 1 to 7 As shown, an energy-saving carbon kiln includes: a kiln body 1, a preheating fan 2, a burner 3, a cooling mechanism 4, an air curtain, a waste heat converter 6, a flue gas filter 7, a storage battery 8, and a PLC controller;

[0025] The described kiln body 1 includes: a carbon kiln preheating section 11, a carbon kiln firing section 12, a carbon kiln cooling section 13, a kiln conveying track 14, and a kiln car 15; the carbon kiln preheating section 11, the carbon kiln firing section 12, and the carbon kiln cooling section 13 are connected in sequence and are internally interconnected; the conveying track 14 is laid through the inner bottom surfaces of the carbon kiln preheating section 11, the carbon kiln firing section 12, and the carbon kiln cooling section 13; the kiln car 15 travels on the conveying track 14.

[0026] A plurality of the described preheating fans 2 are provided, and the plurality of preheating fans 2 are provided on the top wall inside the carbon kiln preheating section 11; the burner 3 is provided on the inner top wall of the carbon kiln firing section 12; the cooling mechanism 4 is provided on the inner top wall of the carbon kiln cooling section 13.

[0027] The described cooling mechanism 4 includes: a cooling machine housing 41, an evaporator 42, a fan blade 43, and a fan motor 44;

[0028] Below the cooling machine housing 41, there is an air outlet 411, and inside the air outlet 411, there is an evaporator 42; the fan blade 43 is arranged above the evaporator 42;

[0029] The fan blade 43 is a cross-flow fan, and the fan motor 44 is arranged on one side of the cooling machine housing 41. The fan blade 43 is driven to rotate by the fan motor 44;

[0030] On the top of the cooling machine housing 41, there are fixed connection screw holes 412;

[0031] The evaporator 42 includes: evaporator fins and an evaporator refrigerant pipe 422. The evaporator refrigerant pipe 422 is inserted through the evaporator fins in an S shape; both ends of the evaporator refrigerant pipe 422 are provided with an evaporator refrigerant pipe inlet 4221 and an evaporator refrigerant pipe outlet 4222; the evaporator refrigerant pipe inlet 4221 and the evaporator refrigerant pipe outlet 4222 are connected to the waste heat converter 6 through pipelines.

[0032] There are multiple air curtains, namely a first air curtain 51, a second air curtain 52, a third air curtain 53, and a fourth air curtain 54; the first air curtain 51 and the second air curtain 52 are arranged at the connection between the preheating section 11 and the firing section 12 of the carbon kiln; the third air curtain 53 and the fourth air curtain 54 are arranged at the connection between the firing section 12 and the cooling section 13 of the carbon kiln.

[0033] On the waste heat converter 6, there are: a converter housing 61, a flue gas pipe 62, flue gas pipe heat dissipation fins 63, a flue gas diversion pump 64, a thermoelectric generation sheet 65, a cooling pipe 66, cooling pipe fins 67, a refrigerant pump 68, and a heat conduction filler 69;

[0034] The converter housing 61 includes: an upper cavity 611, a lower cavity 612, and a heat exchanger foot support 613; the upper cavity 611 is hermetically and fixedly connected to the lower cavity 612; the heat exchanger foot support 613 is arranged at the lower end of the lower cavity 612;

[0035] The described flue gas pipe 62 includes: a smoke guiding pipe 621, a main flue gas pipe 622, and a smoke outlet pipe 623; one end of the smoke guiding pipe 621 is a smoke exhaust port, and the smoke exhaust port is arranged on the inner top wall of the cooling section 13 of the carbon kiln; both ends of the main flue gas pipe 622 are respectively provided with a flue gas inlet 6221 and a flue gas outlet 6222; the flue gas inlet 6221 is connected to the smoke guiding pipe 621 through a flue gas drainage pump 64; the flue gas outlet 6222 is connected to the flue gas filter 7 through the smoke outlet pipe 623; the pipe body of the main flue gas pipe 622 is arranged in the lower cavity 612; the cooling pipe 66 is vacuum isolated in the upper cavity 611; the pipe body of the flue gas pipe 62 is provided with flue gas pipe heat dissipation fins 63; the pipe body of the cooling pipe 66 is provided with cooling pipe fins 67; a heat conductive filler 69 is filled in the lower cavity 612 and covers the main flue gas pipe 622;

[0036] The upper end face of the described flue gas pipe heat dissipation fins 63 and the lower end face of the cooling pipe fins 67 are both smooth planes;

[0037] The described thermoelectric generation chip 65 is a semiconductor wafer based on the Seebeck effect principle; the thermoelectric generation chip 65 is provided with a heat collection end, an NP semiconductor layer, and a cold end; the NP semiconductor layer is arranged between the heat collection end and the cold end of the chip;

[0038] The end face of the heat collection end of the described thermoelectric generation chip 65 is attached to the upper end face of the flue gas pipe heat dissipation fins 63; the end face of the cold end of the chip of the thermoelectric generation chip 65 is attached to the lower end face of the cooling pipe fins 67;

[0039] There are multiple described thermoelectric generation chips 65, and the multiple thermoelectric generation chips 65 are connected in parallel and electrically connected to the storage battery 8 through a charging module 52; the thermoelectric conversion of the thermoelectric generation chip 65 charges the storage battery 8;

[0040] Thermal conductive silicone grease is applied to the two contact surfaces of the described thermoelectric generation chip 65;

[0041] The described cooling pipe 66 is provided with a refrigerant inlet 661 and a refrigerant outlet 662; a refrigerant pump 68 is arranged at the refrigerant inlet 661; the outlet 4222 of the evaporator refrigerant pipe is connected to the refrigerant inlet 661 through the refrigerant pump 68; the refrigerant outlet 662 is connected to the inlet 4221 of the evaporator refrigerant pipe;

[0042] The described cooling pipe 66 is filled with a coolant, and the coolant circulates between the cooling pipe 66 and the evaporator 42 through the refrigerant pump 68;

[0043] The described heat conductive filler 69 is a heat preservation mortar containing 40% chlorine oxide.

[0044] The described flue gas filter 7 includes: a filter pipe body 71 and a filter element 72;

[0045] Both ends of the described flue gas filter 7 are respectively provided with a filter inlet 711 and a filter outlet 712; the filter inlet 711 is connected to the flue outlet 6222 of the flue pipe through a flue pipe 623 by means of a pipe flange connection.

[0046] On both sides of the inner wall of one side of the inlet of the filter body 71 of the described filter, there are filter element limiting flanges 713; on one side of the outlet of the flue gas filter 7 body, there is a filter element abutting edge 714; the filter element 72 is arranged in the filter body 71; the filter element 72 is arranged between the filter element limiting flange 713 and the filter element abutting edge 714.

[0047] On both sides of the outer wall of the described filter element 72, there are limiting sliding grooves 721; the filter element limiting flange 713 is adapted to the limiting sliding grooves 721.

[0048] When the limiting sliding grooves 721 on the filter element 72 correspond to the filter element limiting flanges 713, the filter element 72 can be slid into or out of the flue gas filter 7; after the filter element 72 is slid into the filter body 71, the filter element 72 is rotated; the filter element 72 can be stuck between the filter element limiting flange 713 and the filter element abutting edge 714.

[0049] The described filter element 72 is provided with a number of filter capillary tubes 722; a number of filter capillary tubes 722 helically penetrate through the entire filter element 72 along its axis.

[0050] The described filter element 72 is made of carbon fiber material.

Claims

1. An energy-saving carbon kiln, comprising: A kiln body (1), a preheating fan (2), a burner (3), a cooling mechanism (4), an air curtain, a waste heat converter (6), a flue gas filter (7), and a storage battery (8); the kiln body (1) comprises: a carbon kiln preheating section (11), a carbon kiln firing section (12), and a carbon kiln cooling section (13); the carbon kiln preheating section (11), the carbon kiln firing section (12), and the carbon kiln cooling section (13) are connected in sequence and are interconnected internally, and are characterized in that: the preheating fan (2) is arranged on the top wall inside the carbon kiln preheating section (11); the burner (3) is arranged on the top wall inside the carbon kiln The inner top wall of the firing section (12); the inner top wall of the carbon kiln cooling section (13) is provided with a cooling mechanism (4); the connection between the carbon kiln preheating section (11) and the carbon kiln firing section (12) and the connection between the carbon kiln firing section (12) and the carbon kiln cooling section (13) are both provided with air curtains; the waste heat converter (6) performs thermoelectric conversion on the hot flue gas of the carbon kiln cooling section (13); an evaporator is provided in the cooling mechanism (4); the refrigerant in the evaporator is cooled by the waste heat converter (6); the electric energy generated by the waste heat converter (6) is stored in a storage battery (8) or directly used as auxiliary lighting electricity.

2. The energy-saving carbon kiln according to claim 1 is characterized in that: A conveying track (14) and a kiln car (15) are also provided in the kiln body (1); the conveying track (14) is laid through and on the inner bottom surface of the carbon kiln preheating section (11), the carbon kiln firing section (12) and the carbon kiln cooling section (13); and the kiln car (15) travels on the conveying track (14).

3. The energy-saving carbon kiln according to claim 2 is characterized in that: The cooling mechanism (4) comprises: a cooling machine housing (41), an evaporator (42), a fan blade (43), and a fan motor (44); an air outlet (411) is provided below the cooling machine housing (41), and an evaporator (42) is provided inside the air outlet (411); the fan blade (43) is a cross-flow fan, and the fan blade (43) is provided above the evaporator (42); the fan blade (43) is driven to rotate by the fan motor (44).

4. The energy-saving carbon kiln according to claim 3 is characterized in that: The evaporator (42) comprises: evaporator fins, an evaporator refrigerant tube (422), and the evaporator refrigerant tube (422) is inserted into the evaporator fins in an S shape; the evaporator refrigerant tube (422) is connected to the waste heat converter (6) pipeline.

5. The energy-saving carbon kiln according to claim 4 is characterized in that: The waste heat converter (6) is provided with: a converter housing (61), a smoke pipe (62), a smoke drainage pump (64), a temperature difference power generation sheet (65), a cooling pipe (66), a refrigerant pump (68), and a heat conductive filler (69); the converter housing (61) comprises: an upper cavity (611), a lower cavity (612), and a heat exchanger foot support (613); the upper cavity (611) and the lower cavity (612) are sealed and locked; the heat exchanger foot support (613) is arranged at the lower end of the lower cavity (612); a main smoke pipe (622) is arranged in the smoke pipe (62); the heat conductive filler (69) is filled in the lower cavity (611); 12) and covers the main flue gas pipe (622); the cooling pipe (66) is vacuum-isolated in the upper cavity (611); the temperature difference power generation sheet (65) is arranged between the flue gas pipe (62) and the cooling pipe (66); the top wall of the carbon kiln firing section (12) is also provided with a smoke exhaust port, and the flue gas pipe (62) is connected to the smoke exhaust port pipeline through a smoke drainage pump (64) and a smoke drainage pipe (621) in sequence; the cooling pipe (66) is connected to the evaporator refrigerant pipe (422) pipeline through a refrigerant pump (68); the cooling pipe (66) is provided with a coolant, and the coolant circulates between the cooling pipe (66) and the evaporator (42) through the refrigerant pump (68).

6. The energy-saving carbon kiln according to claim 5, characterized in that: The flue gas pipe (62) is provided with a flue gas pipe heat dissipation fin (63) on its body; the cooling pipe (66) is provided with a cooling pipe fin (67) on its body; the upper end surface of the flue gas pipe heat dissipation fin (63) and the lower end surface of the cooling pipe fin (67) are both smooth planes; the temperature difference power generation sheet (65) is provided with a heat collection end and a cold end, the heat collection end surface is attached to the upper end surface of the flue gas pipe heat dissipation fin (63); the cold end surface of the power generation sheet is attached to the lower end surface of the cooling pipe fin (67).

7. The energy-saving carbon kiln according to claim 5, characterized in that: A plurality of thermoelectric power generation sheets (65) are provided, and the plurality of thermoelectric power generation sheets (65) are connected in parallel and electrically connected to the storage battery (8) through the charging module (52).

8. The energy-saving carbon kiln according to claim 7, characterized in that: The smoke filter (7) comprises: a filter tube body (71) and a filter element (72); the filter element (72) is sleeved in the smoke filter (7).

9. The energy-saving carbon kiln according to claim 8, characterized in that: A PLC controller is provided beside the kiln body (1), and the PLC controller is electrically connected to the conveying track (14), the fan motor (44), the air curtain, the smoke drainage pump (64), the refrigerant pump (68) and the battery (8) respectively.

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