Detachable waste heat recovery device of roller kiln incinerator

Abstract

The utility model belongs to the field of lithium battery negative electrode production waste heat recovery, and provides a detachable waste heat recovery device for a roller kiln incinerator, which comprises a cavity formed by splicing heat exchange plates and used for containing flowing media, the cavity is sealed through a shell, an air inlet and an air outlet are respectively arranged at two ends of the cavity, a cold measurement medium in the cavity is flowing water, and the air inlet and the air outlet are communicated with the cavity. A hot side medium outside the cavity is hot flue gas; each heat exchange plate is formed by combining a plurality of blowing-up type bubbling plates, and the blowing-up type bubbling plates are arranged side by side; the heat exchange plates are formed by combining blowing bubbling plates, the surfaces of the blowing bubbling plates are subjected to smooth treatment, the materials of the blowing bubbling plates can be adjusted according to components in smoke, the surfaces of the blowing bubbling plates are subjected to smooth treatment, so that tar substances are not prone to adhesion, the upper portion of the waste heat recovery device is of an opening and closing structure, and online cleaning of the plates in the heat exchanger can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of lithium battery negative electrode production waste heat recovery, especially a detachable waste heat recovery device of roller kiln incinerator. BACKGROUND

[0002] The roller kiln used in the lithium battery negative electrode production line is mainly used for high-temperature sintering, constant-temperature reaction and cooling of lithium battery negative electrode materials. Its specific functions include:

[0003] High-temperature sintering: the negative electrode material is heated at a high temperature in the heating section to cause physical and chemical changes and form a stable crystal structure.

[0004] Constant-temperature reaction: the temperature is kept constant in the constant-temperature section to ensure that the negative electrode material fully reacts at this temperature and the performance of the material meets the requirements.

[0005] Cooling: the material is rapidly cooled in the cooling section to avoid performance degradation caused by long-term exposure to high temperatures.

[0006] Waste gas treatment: a TO direct combustion furnace is generally installed at the tail of the roller kiln to incinerate the exhaust gas discharged from the roller kiln. The exhaust gas after incineration is at a high temperature (higher than 600℃), so negative pressure cooling air is used to reduce the temperature of the exhaust gas to below 300℃, and then a high-temperature induced draft fan is used to discharge the exhaust gas. This method not only wastes the heat energy in the exhaust gas, but also dilutes the exhaust gas and discharges it, which is prohibited by environmental protection regulations.

[0007] Therefore, a device is needed that can reduce the temperature of the exhaust gas and adapt to the working conditions of the lithium battery negative electrode production line with high tar content in the exhaust gas, so that the exhaust gas discharge can meet the temperature requirements of the subsequent fan and the environmental protection requirements of the exhaust gas discharge. UTILITY MODEL CONTENTS

[0008] The utility model aims to overcome the above-mentioned shortcomings of the prior art and provide a detachable waste heat recovery device of roller kiln incinerator for lithium battery negative electrode production line, which can meet the temperature requirements of the subsequent fan and the environmental protection requirements of the exhaust gas discharge, and can also adapt to the working conditions of the exhaust gas containing a large amount of tar.

[0009] The technical solution of the utility model is: a detachable waste heat recovery device of roller kiln incinerator, which comprises heat exchange plates that are spliced to form a chamber containing flowing medium and sealed by an outer shell. The chamber has an air inlet and an air outlet at its two ends. The cold medium in the chamber is flowing water, and the hot medium outside the chamber is hot flue gas. The heat exchange plates are combined by a plurality of blown bubble plates arranged side by side.

[0010] The advantage of the scheme is that, compared with other tubular heat exchangers, the volume and weight are smaller under the same heat exchange area, the bubble plate can use different materials according to different flue gas components, the heat exchange efficiency is improved, and the cleaning is easy and the risk of blockage is reduced compared with the tubular heat exchanger.

[0011] Further, the spacing between the heat exchange plates is 10-20mm. Preferably, the spacing between the heat exchange plates is 12-18mm; more preferably, the spacing between the heat exchange plates is 18mm, which facilitates the decontamination cleaning of the surface of the heat exchange plates.

[0012] Further, the surface of the heat exchange plate is smooth, which reduces the adhesion of oil stains on the surface of the heat exchange plate.

[0013] Further, the waste heat recovery device is provided with an openable and closable cover plate, and an online cleaning device is arranged on the cover plate. That is, the cover plate is sealed by being opened and closed, and when the tar on the heat exchange plate is too much, the plate can be directly cleaned by a solvent that can dissolve the tar to improve the service life of the heat exchange plate; the online cleaning device can clean the internal plate without stopping the production line.

[0014] Further, the lower part of the waste heat recovery device is provided with a detachable cover body, which is convenient for cleaning and discharging. In addition, when the heat exchange plate is seriously attached with tar or even the gap between the plates is blocked, the plate in the heat recovery device can be removed and cleaned by detaching the cover body, thereby improving the reusability of the equipment.

[0015] Further, the cover body is provided with a pollution discharge port, which improves the convenience of cleaning.

[0016] Further, the upper part of the waste heat recovery device is provided with a water inlet main pipe and a water outlet main pipe, and the inlet and outlet of each inflation bubble plate are connected to the main pipes through a metal hose, so that the plate can be removed when necessary.

[0017] Further, the water inlet main pipe is provided with an exhaust port, which reduces the influence of air pressure on water inlet.

[0018] Further, the flue gas inlet side of the waste heat recovery device is provided with a cold air supplementing port. When the inlet flue gas temperature is too high, it may cause the water temperature in the plate to exceed the temperature or even gasify. At this time, the adjusting valve of the cold air supplementing port can be opened or adjusted to reduce the inlet flue gas temperature and inhibit the water temperature from exceeding the temperature.

[0019] Further, the cold air supplementing port is provided with an adjusting door.

[0020] The utility model has the following beneficial effects:

[0021] 1、The heat exchange plate is combined by inflation bubble plates, the surface is treated to be smooth, the material can be adjusted according to the components in flue gas, the inflation bubble plate surface is treated to be smooth, so that the tar substances are not easy to adhere.

[0022] 2、The upper part of the waste heat recovery device is an opening and closing structure, and the internal plate of the heat exchanger can be cleaned online.

[0023] 3、The lower part of the waste heat recovery device is a full detachable structure, the heat exchange plate and the mother pipe are connected by a metal hose, the internal plate of the heat exchanger can be disassembled, and complete cleaning is realized; the inlet and outlet water pipes adopt a mother pipe form to balance the water supply and water pressure of each plate.

[0024] 4、The utility model discloses a front end adds an emergency cold air door, can realize emergency reduction of flue gas temperature under the condition of water temperature overtemperature, prevents water temperature overtemperature, and the inlet and outlet air ports adopt a live lap flange form, facilitates butt joint with the original flue gas interface during installation.

[0025] The utility model discloses simple structure, clever design, adopt the heat exchange plate on the surface to reduce the condensation of solid particles in flue gas on the surface, and the equipment is opened and closed or disassembled up and down, improves the cleaning convenience of heat exchange plate, compared with the cleaning and maintenance advantage of round pipe type heat exchange pipe, improves the service life and heat exchange efficiency of heat exchange plate, can adapt to the working condition that a large amount of tar is contained in waste gas.

[0026] The detailed structure of the utility model is further described in combination with the drawings and specific embodiments. DRAWINGS

[0027] Figure 1 It is the structure schematic view of the utility model;

[0028] Figure 2 It is Figure 1 the top view of structure;

[0029] Figure 3 It is Figure 1 the left view of structure;

[0030] 1-inlet, 2-cold air door, 3-inlet water pipe, 4-outlet water pipe, 5-metal hose, 6-flushing solvent interface, 7-cover plate, 8-cover, 9-dump port, 10-outlet, 11-adjusting door, 12-exhaust port, 13-inflation bubble plate. SPECIFIC EMBODIMENTS

[0031] As shown in the drawings: a detachable waste heat recovery device of a roller kiln incinerator, comprising heat exchange plates spliced to form a chamber containing flowing medium, and sealed by an outer shell, both ends of the chamber are respectively provided with an air inlet 1 and an air outlet 10, the cold measuring medium in the chamber is flowing water, and the hot side medium outside the chamber is hot flue gas; the heat exchange plates are combined by a plurality of blown bubble plates 13 arranged side by side.

[0032] The spacing between the heat exchange plates is 10-20mm. Preferably, the spacing between the heat exchange plates is 12-18mm; more preferably, the spacing between the heat exchange plates is 18mm, which facilitates the decontamination cleaning of the surface of the heat exchange plates. The surface of the heat exchange plates is smooth, and the surface of the heat exchange plates is polished to reduce the adhesion of oil stains on the surface of the heat exchange plates.

[0033] The upper part of the waste heat recovery device is provided with an openable and closable cover plate 7, and the cover plate 7 is provided with an online washing device. The online washing device is provided with a washing solvent interface 6, which is sealed by the openable and closable cover plate 7 during use. In the case of excessive tar adhesion on the heat exchange plates, the cover plate 7 can be opened to clean the plates directly with a solvent that can dissolve tar to improve the service life of the heat exchange plates; the online cleaning device can clean the internal plates without stopping the production line.

[0034] The lower part of the waste heat recovery device is provided with a detachable cover 8 for easy cleaning and discharge. In addition, when the heat exchange plates have severe tar adhesion or even the gap between the plates is blocked, the plates in the heat recovery device can be removed for cleaning to improve the reusability of the equipment; the cover 8 is provided with a pollution discharge port 9 to improve the convenience of cleaning.

[0035] The upper part of the waste heat recovery device is provided with a water inlet main pipe 3 and a water outlet main pipe 4, and the inlet and outlet of each blown bubble plate are connected to the main pipe through a metal hose 5 to facilitate the disassembly of the plates when necessary; the water inlet main pipe 3 is provided with an exhaust port 12 to reduce the influence of air pressure on water inlet.

[0036] The flue gas inlet side of the waste heat recovery device is provided with a cold air supplement port 2, and the cold air supplement port 2 is provided with an adjusting door 11. When the inlet flue gas temperature is too high, it may cause the water temperature in the plate to exceed the temperature and even gasification. At this time, the adjusting valve of the cold air supplement port 2 can be opened or adjusted to reduce the inlet flue gas temperature and inhibit the water temperature from exceeding the temperature.

[0037] The utility model discloses under the same heat exchange area, compared with other column tube type heat exchanger, has smaller volume and weight, and the bubble plate can use different material according to different flue gas composition, improves the heat exchange efficiency, and relative to the tube type heat exchanger, it is easy to clean, reduces the risk of blockage, the heat exchange plate adopts the combination of inflation bubble plate, and the surface is smooth, and its material can be adjusted according to the composition in flue gas, and the smooth surface of inflation bubble plate makes that tar class matter not easy to adhere.

[0038] The utility model discloses front end adds the emergency cold air door of making up, can realize the emergency reduction of smoke temperature under the condition of water temperature overtemperature, prevents water temperature overtemperature, and the form of female pipe is adopted to the inlet and outlet water pipe, to balance the water supply and water supply pressure of every plate piece.

[0039] The above is the preferred embodiment of the utility model and the technical principle used, for the person skilled in the art, without departing from the spirit and scope of the utility model, any equivalent transformation, simple replacement etc. based on the utility model technical scheme, obvious change, all belong to the protection scope of the utility model.

Claims

1. A detachable waste heat recovery device for a roller kiln incinerator, characterized by: The heat exchange plate is combined by several blow-up bubble plates.

2. The roll kiln incinerator detachable waste heat recovery device according to claim 1, characterized in that: The distance between the heat exchange plates is 10-20mm.

3. The roll kiln incinerator detachable waste heat recovery device according to claim 2, characterized in that: The surface of the heat exchange plate is smooth.

4. The roll kiln incinerator detachable waste heat recovery device according to claim 1, characterized in that: The upper part of the waste heat recovery device is provided with an openable cover plate, and the cover plate is provided with an online flushing device.

5. The roll kiln incinerator detachable waste heat recovery device according to claim 1, characterized in that: The lower part of the waste heat recovery device is provided with a detachable cover.

6. The roll kiln incinerator detachable waste heat recovery device according to claim 5, characterized in that: The cover is provided with a blowdown port.

7. The roll kiln incinerator detachable waste heat recovery device according to claim 4, characterized in that: The upper part of the waste heat recovery device is provided with a water inlet main pipe and a water outlet main pipe, and the inlet and outlet of each blow-up bubble plate are connected with the main pipes through metal hoses.

8. The roll kiln incinerator detachable waste heat recovery device according to claim 7, characterized in that: The water inlet main pipe is provided with an exhaust port.

9. The roll kiln incinerator detachable waste heat recovery device according to claim 1, characterized in that: The flue gas inlet side of the waste heat recovery device is provided with a cold air supplement port.

10. The roll kiln incinerator detachable waste heat recovery device according to claim 9, characterized in that: The cold air supplement port is provided with an adjusting door.

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