A two-way double-chamber furnace

Abstract

The present invention discloses a two-way double-chamber furnace, which belongs to the technical field of chamber furnaces. The design of running the upper chamber furnace and the lower chamber furnace in opposite directions and distributing the battlements can realize the design of integrated sharing of the ceiling part, which can greatly reduce the heat dissipation of the wall surface. This time, a two-way double-flow design with relative product advancing directions in the two-layer furnace is adopted, and a kiln with an installation area far smaller than that of traditional equipment is designed. The product direction of the upper and lower kilns is operated in the opposite direction to the existing equipment comparison room, and the external circulation device is provided with a product recovery device, and the inlet and outlet connection of the product burning and placing device is set, so that the existing external circulation device does not need the original external circulation device of the product lifting and lowering device.

Description

Technical Field

[0001] The invention relates to a cavity furnace, in particular to a bidirectional double-cavity furnace, belonging to the technical field of cavity furnaces. Background Art

[0002] The continuous sintering furnace in the prior art generally consists of a furnace body, an external circulation device using a sagger to transport products, and an inlet and outlet replacement chamber filled with saggers and recovering products. The furnace is filled with gas and the surrounding air is filled with gas. When the gas is filled with the inside of the furnace, the gas in the furnace and the surrounding air are cut off at the inlet and outlet of the sintering furnace to prevent them from mixing. In addition, according to the requirements of production technology, sagger cracking inspection and sagger cleaning devices will be provided on the external circulation device.

[0003] According to this, the continuous sintering furnace and its ancillary equipment require a very large floor area to set up. For example, a sintering furnace for positive or negative electrode materials of lithium batteries, a sintering furnace over 50 meters will occupy a large area of ​​the factory.

[0004] In addition, since the exhaust gas generated by the calcining furnace and the heat contained therein are mutually utilized in a plurality of furnaces, the amount of heat generated by transporting the high-temperature gas over a long distance is reduced.

[0005] In addition, the heat radiated from the wall is difficult to recover, and since the insulation technology using insulation materials is also very mature, the heat reduction is limited.

[0006] Furthermore, when installing exhaust gas treatment equipment, it is rarely installed separately and shared in each sintering furnace because gas transportation takes a long time.

[0007] In order to solve the above problems, a two-way double-chamber furnace is designed to optimize the above problems. Summary of the invention

[0008] The main purpose of the present invention is to provide a two-way double-chamber furnace. The design of running the upper and lower chamber furnaces in opposite directions and distributing the battlements can realize the design of integrated sharing of the ceiling part, which can greatly reduce the heat dissipation of the wall surface. This time, a two-way double-flow design with relative product forward directions in the two-layer furnace is adopted, and a kiln with an installation area far smaller than that of traditional equipment is designed. The product direction of the upper and lower kilns is operated in the opposite direction to the existing equipment comparison room. The external circulation device is equipped with a product recovery device, and the inlet and outlet connection of the product burning and placing device is set, so that the existing external circulation device does not need the original external circulation device of the product lifting and lowering device. As a result, the equipment installation area can be greatly reduced. Furthermore, since the heating part and the cooling part of the furnace are set close to each other, the heat released by the cooling part and the exhaust gas can be effectively utilized in the nearby heating part. In addition, the heat dissipation of the wall of the previous tank furnace is 380kw and the heat required for furnace operation is 41% of 930kw, which is very large. The power of the two-way double-flow double-chamber furnace is 530kw, and the required heat is 33% of 1620kw, which can be greatly reduced. Compared with the production volume as the benchmark, it can be reduced by 30%. The total amount of exhaust gas emitted by the furnace: from 235n㎥ / hr of the cooling part gas: 60n㎥ / hr does not include the gas coming out of the product, including the direct reuse, which is a sign of a reduction of about 26%. According to the reuse of the high-temperature gas, the heat released by the exhaust gas of 21 kilowatts can be recovered, and about 28% of 6 kilowatts can be recycled. If all of these can be achieved, the production volume can be doubled and the production cost can be reduced by 30%.

[0009] The purpose of the present invention can be achieved by adopting the following technical solutions:

[0010] A two-way double-chamber furnace, comprising an upper sintering furnace and a lower sintering furnace, wherein the upper sintering furnace and the lower sintering furnace are distributed with upper and lower battlements, and both ends of the upper sintering furnace and the lower sintering furnace are provided with replacement chamber groups, and the replacement chamber groups include an upper replacement chamber group and a lower replacement chamber group, and the outer ends of the upper replacement chamber group located at both ends of the upper sintering furnace are provided with an upper single-line filling and recovery chamber group for filling on the left side and recycling on the right side from left to right, and the outer ends of the lower replacement chamber group located at both ends of the lower sintering furnace are provided with a lower single-line filling and recovery chamber group for filling on the right side and recycling on the left side from right to left, The upper chamber furnace is composed of the filling and recovery chamber group, the upper replacement chamber group and the upper sintering furnace, and the lower chamber furnace is composed of the lower single-line filling and recovery chamber group, the lower replacement chamber and the lower sintering furnace, and the upper chamber furnace and the lower chamber furnace run in opposite directions. Elevator assemblies that can circulate the two-way double chamber furnace are provided at both ends of the two-way double chamber furnace, and a box body yard is provided on one side of the elevator assembly, a heat energy replacement group is provided outside the upper sintering furnace and the lower sintering furnace, an upper conveying roller assembly that can transport the box body is provided in the upper chamber furnace, and a lower conveying roller assembly that can transport the box body is provided in the lower chamber furnace.

[0011] Preferably, the upper displacement chamber group includes a third displacement chamber and a first displacement chamber, and the third displacement chamber and the first displacement chamber are respectively connected to two ends of the upper sintering furnace;

[0012] The lower displacement chamber group includes a fourth displacement chamber and a second displacement chamber, and the fourth displacement chamber and the second displacement chamber are respectively communicated with two ends of the lower sintering furnace.

[0013] Preferably, the upper single-line filling and recovery chamber group includes a first feed tube rack, a first filling chamber and a first recovery chamber, one end of the third replacement chamber is connected to the first filling chamber, and a first feed tube rack is provided on the upper side of the first filling chamber, and one end of the first replacement chamber is connected to the first recovery chamber.

[0014] Preferably, the lower single-line filling and recovery chamber group includes a second feed tube rack, a second filling chamber and a second recovery chamber, one end of the second replacement chamber is connected to the second filling chamber, and the top side of the second filling chamber is connected to the second feed tube rack, and one end of the fourth replacement chamber is connected to the second recovery chamber.

[0015] Preferably, the elevator assembly includes a first elevator and a second elevator, one end of the first filling chamber and the second recovery chamber is connected with the first elevator, and one end of the first recovery chamber and the second filling chamber is connected with the second elevator.

[0016] Preferably, the heat energy replacement group includes a heat exchanger, an air pump and a connecting pipe. A connecting pipe connecting the upper sintering furnace and the lower sintering furnace is provided in the partitions of the upper sintering furnace and the lower sintering furnace. The connecting pipe passes through the inner wall of the upper sintering furnace and is connected to the outside of the upper sintering furnace. The output end of the heat exchanger is connected to the air pump, and the output end of the air pump is connected back to the inner side of the lower sintering furnace.

[0017] Preferably, a box body placement rack is provided on the box body yard, and a box body suction cleaning and inspection component for cleaning and inspecting the box bodies is provided in the second elevator.

[0018] Beneficial technical effects of the present invention:

[0019] The present invention provides a two-way double-chamber furnace, which adopts the design of running the upper chamber furnace and the lower chamber furnace in opposite directions and distributing the battlements to realize the design of integrated sharing of the ceiling part, which can greatly reduce the heat dissipation of the wall surface. This time, a two-way double-flow design with relative product forward directions in the two-layer furnace is adopted, and a kiln with an installation area far smaller than that of traditional equipment is designed. The product direction of the upper and lower kilns is operated in the opposite direction to the existing equipment comparison chamber, and the external circulation device is provided with a product recovery device, and the inlet and outlet connection settings of the product burning and placing device make the existing external circulation device no longer need the original external circulation device of the product lifting and lowering device. As a result, the equipment installation area can be greatly reduced. Furthermore, since the heating part and the cooling part of the furnace are set close to each other, the heat released by the cooling part and the exhaust gas can be effectively utilized in the nearby heating part. In addition, the heat dissipation of the wall of the previous tank furnace is 380kw and the heat required for furnace operation is 41% of 930kw, which is very large. The power of the two-way double-flow double-chamber furnace is 530kw, and the required heat is 33% of 1620kw, which can be greatly reduced. Compared with the production volume as the benchmark, it can be reduced by 30%. The total amount of exhaust gas emitted by the furnace: from the cooling part gas of 235n㎥ / hr: 60n㎥ / hr does not include the gas coming out of the product, including the direct reuse, which is a sign of a reduction of about 26%. According to the reuse of the high-temperature gas, the heat released by the exhaust gas of 21 kilowatts can be recovered, and about 28% of 6 kilowatts can be recycled. If all of these can be achieved, the production volume can be doubled and the production cost can be reduced by 30%. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The present invention is a diagram of the overall working process of a two-way double-chamber furnace according to a preferred embodiment of the present invention.

[0021] In the figure: 1-first elevator, 2-first filling chamber, 3-first feeding tube rack, 4-upper conveying roller assembly, 5-lower conveying roller assembly, 7-first replacement chamber, 8-first recovery chamber, 9-second elevator, 10-box body yard, 11-box body placement rack, 12-box body suction cleaning inspection assembly, 13-second feeding tube rack, 14-second filling chamber, 15-second replacement chamber, 16-second recovery chamber, 17-third replacement chamber, 18-fourth replacement chamber, 19-upper sintering furnace, 20-lower sintering furnace. DETAILED DESCRIPTION

[0022] In order to make the technical solution of the present invention more clear and specific to those skilled in the art, the present invention is further described in detail below in conjunction with embodiments and drawings, but the implementation manner of the present invention is not limited thereto.

[0023] like Figure 1As shown, a bidirectional double-chamber furnace provided in this embodiment includes an upper sintering furnace 19 and a lower sintering furnace 20, and the upper sintering furnace 19 and the lower sintering furnace 20 are distributed in upper and lower battlements, and displacement chamber groups are provided at both ends of the upper sintering furnace 19 and both ends of the lower sintering furnace 20, and the displacement chamber group includes an upper displacement chamber group and a lower displacement chamber group, and the outer ends of the upper displacement chamber group located at both ends of the upper sintering furnace 19 are provided with an upper single-line filling and recovery chamber group for filling on the left side and recycling on the right side from left to right, and the outer ends of the lower displacement chamber group located at both ends of the lower sintering furnace 20 are provided with a lower single-line filling and recovery chamber group for filling on the right side and recycling on the left side from right to left. The upper chamber furnace is composed of an upper single-line filling and recovery chamber group, an upper replacement chamber group and an upper sintering furnace 19, and the lower chamber furnace is composed of a lower single-line filling and recovery chamber group, a lower replacement chamber and a lower sintering furnace 20, and the upper chamber furnace and the lower chamber furnace run in opposite directions. Elevator assemblies that can circulate the two-way double chamber furnace are provided at both ends of the two-way double chamber furnace, and a box body yard 10 is provided on one side of the elevator assembly, a heat energy replacement group is provided outside the upper sintering furnace 19 and the lower sintering furnace 20, an upper conveying roller assembly 4 that can transport the box body is provided in the upper chamber furnace, and a lower conveying roller assembly 5 that can transport the box body is provided in the lower chamber furnace.

[0024] The design of running the upper and lower chamber furnaces in opposite directions and distributing the battlements can realize the integrated sharing of the ceiling part, which can greatly reduce the heat dissipation of the wall surface. This time, a two-way double-flow design with opposite product forward directions in the two-layer furnace was adopted, and a kiln with a much smaller installation area than traditional equipment was designed. The product direction of the upper and lower kilns is operated in the opposite direction of the existing equipment comparison room. The external circulation device is equipped with a product recovery device, and the inlet and outlet connection settings of the product burning and placing device make the existing external circulation device no longer need the original external circulation device of the product lifting and lowering device. As a result, the equipment installation area can be greatly reduced. Furthermore, since the heating part and the cooling part of the furnace are set close to each other, the heat released by the cooling part and the exhaust gas can be effectively utilized in the nearby heating part. In addition, the heat dissipation of the wall of the previous tank furnace is 380kw and the heat required for furnace operation is 41% of 930kw, which is very large. The power of the two-way double-flow double-chamber furnace is 530kw, and the required heat is 33% of 1620kw, which can be greatly reduced. Compared with the production volume as the benchmark, it can be reduced by 30%. The total amount of exhaust gas emitted by the furnace: from the cooling part gas of 235n㎥ / hr: 60n㎥ / hr does not include the gas coming out of the product, including the direct reuse, which is a sign of a reduction of about 26%. According to the reuse of the high-temperature gas, the heat released by the exhaust gas of 21 kilowatts can be recovered, and about 28% of 6 kilowatts can be recycled. If all of these can be achieved, the production volume can be doubled and the production cost can be reduced by 30%.

[0025] (n㎥ / hr refers to the flow rate of gas in cubic meters per hour under standard conditions, and N refers to standard conditions, which is a state with a temperature of 20 degrees Celsius and a pressure of 1 atmosphere).

[0026] In this embodiment, the upper displacement chamber group includes a third displacement chamber 17 and a first displacement chamber 7, and the third displacement chamber 17 and the first displacement chamber 7 are respectively connected to two ends of the upper sintering furnace 19;

[0027] The lower displacement chamber group includes a fourth displacement chamber 18 and a second displacement chamber 15 , and the fourth displacement chamber 18 and the second displacement chamber 15 are communicated with both ends of the lower sintering furnace 20 , respectively.

[0028] In this embodiment, the upper single-line filling and recovery chamber group includes a first feed tube rack 3, a first filling chamber 2 and a first recovery chamber 8, one end of the third replacement chamber 17 is connected to the first filling chamber 2, and a first feed tube rack 3 is provided on the upper side of the first filling chamber 2, and one end of the first replacement chamber 7 is connected to the first recovery chamber 8.

[0029] In this embodiment, the lower single-line filling and recovery chamber group includes a second feed tube rack 13, a second filling chamber 14 and a second recovery chamber 16, one end of the second replacement chamber 15 is connected to the second filling chamber 14, and the top side of the second filling chamber 14 is connected to the second feed tube rack 13, and one end of the fourth replacement chamber 18 is connected to the second recovery chamber 16.

[0030] In this embodiment, the elevator assembly includes a first elevator 1 and a second elevator 9. One end of the first filling chamber 2 and the second recovery chamber 16 is connected to the first elevator 1, and one end of the first recovery chamber 8 and the second filling chamber 14 is connected to the second elevator 9.

[0031] In this embodiment, the heat energy replacement group includes a heat exchanger, an air pump and a connecting pipe. A connecting pipe connecting the upper sintering furnace 19 and the lower sintering furnace 20 is provided in the partition of the upper sintering furnace 19 and the lower sintering furnace 20. The connecting pipe passes through the inner wall of the upper sintering furnace 19 and is connected to the outside of the upper sintering furnace 19. The output end of the heat exchanger is connected to the air pump, and the output end of the air pump is connected back to the inner side of the lower sintering furnace 20.

[0032] In this embodiment, a box body placement rack 11 is provided on the box body stacking yard 10, and a box body suction cleaning and inspection component 12 for cleaning and inspecting the box bodies is provided in the second elevator 9.

[0033] The above are only further embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and concepts of the present invention within the scope disclosed by the present invention, which belong to the protection scope of the present invention.

Claims

1. A two-way double-chamber furnace, characterized in that: The invention comprises an upper sintering furnace (19) and a lower sintering furnace (20), wherein the upper sintering furnace (19) and the lower sintering furnace (20) are arranged with upper and lower battlements, and displacement chamber groups are arranged at both ends of the upper sintering furnace (19) and both ends of the lower sintering furnace (20), and the displacement chamber groups comprise an upper displacement chamber group and a lower displacement chamber group, and the outer ends of the upper displacement chamber groups at both ends of the upper sintering furnace (19) are arranged from left to right with an upper single-line filling and recovery chamber group for filling on the left side and recycling on the right side, and the outer ends of the lower displacement chamber groups at both ends of the lower sintering furnace (20) are arranged from right to left with a lower single-line filling and recovery chamber group for filling on the right side and recycling on the left side, and the upper single-line filling and recovery chamber group is arranged from left to right with a lower single-line filling and recovery chamber group for filling on the right side and recycling on the left side. The recovery chamber group, the upper displacement chamber group and the upper sintering furnace (19) constitute an upper chamber furnace, and the lower chamber furnace is constituted by the lower single-line filling recovery chamber group, the lower displacement chamber and the lower sintering furnace (20), and the upper chamber furnace and the lower chamber furnace run in opposite directions. An elevator assembly capable of circulating the two-way double chamber furnace is provided at both ends of the two-way double chamber furnace, and a casket yard (10) is provided on one side of the elevator assembly. A heat energy displacement group is provided outside the upper sintering furnace (19) and the lower sintering furnace (20). An upper conveying roller assembly (4) capable of transporting the casket is provided in the upper chamber furnace, and a lower conveying roller assembly (5) capable of transporting the casket is provided in the lower chamber furnace. The upper displacement chamber group comprises a third displacement chamber (17) and a first displacement chamber (7), and the third displacement chamber (17) and the first displacement chamber (7) are respectively connected to two ends of the upper sintering furnace (19); The lower displacement chamber group comprises a fourth displacement chamber (18) and a second displacement chamber (15), and the fourth displacement chamber (18) and the second displacement chamber (15) are respectively connected to two ends of the lower sintering furnace (20); The upper single-line filling and recovery chamber group comprises a first feeding tube rack (3), a first filling chamber (2) and a first recovery chamber (8); one end of the third displacement chamber (17) is connected to the first filling chamber (2); a first feeding tube rack (3) is provided above and on the side of the first filling chamber (2); and one end of the first displacement chamber (7) is connected to the first recovery chamber (8); The heat energy replacement group comprises a heat exchanger, an air pump and a connecting pipe. A connecting pipe connecting the upper sintering furnace (19) and the lower sintering furnace (20) is provided in the partition of the upper sintering furnace (19) and the lower sintering furnace (20). The connecting pipe passes through the inner wall of the upper sintering furnace (19) and is connected to the outside of the upper sintering furnace (19). The output end of the heat exchanger is connected to the air pump, and the output end of the air pump is connected back to the inner side of the lower sintering furnace (20).

2. A two-way double-chamber furnace according to claim 1, characterized in that: The lower single-line filling and recovery chamber group comprises a second feeding tube rack (13), a second filling chamber (14) and a second recovery chamber (16); one end of the second displacement chamber (15) is connected to the second filling chamber (14), and the top side of the second filling chamber (14) is connected to the second feeding tube rack (13); one end of the fourth displacement chamber (18) is connected to the second recovery chamber (16).

3. A two-way double-chamber furnace according to claim 1, characterized in that: The elevator assembly comprises a first elevator (1) and a second elevator (9), wherein one end of the first filling chamber (2) and the second recovery chamber (16) are connected to the first elevator (1), and one end of the first recovery chamber (8) and the second filling chamber (14) are connected to the second elevator (9).

4. A two-way double-chamber furnace according to claim 3, characterized in that: A box body placement rack (11) is provided on the box body stacking yard (10), and a box body suction cleaning inspection component (12) for cleaning and inspecting the box bodies is provided in the second elevator (9).

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