Pyrolysis oil gas collecting and conveying device of waste battery pyrolyzing furnace

Abstract

The utility model relates to the technical field of waste battery pyrolysis oil gas recovery, in particular to a waste battery pyrolysis furnace pyrolysis oil gas collecting and conveying device. The collecting and conveying device comprises a high-temperature nitrogen injection assembly and a pyrolysis oil gas conveying assembly, the pyrolysis oil gas conveying assembly comprises a high-temperature dust remover, a booster fan and a waste gas incinerator which are connected through a pipeline, and the high-temperature nitrogen injection assembly provides high-temperature nitrogen for the pyrolysis oil gas conveying assembly. The pyrolysis furnace is simple in structure, the high-temperature dust remover and the booster fan are arranged, the booster fan can effectively guarantee stable operation of the operation condition in the pyrolysis furnace, and the situation that the high-temperature dust remover influences the operation condition in the pyrolysis furnace due to pressure difference is prevented; and the high-temperature nitrogen injection assembly is arranged, so that the phenomena that pyrolysis oil gas is condensed and adhered to an equipment pipeline due to equipment temperature reduction, the equipment pipeline is blocked, and operation cannot be carried out are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to waste battery pyrolysis oil gas recovery technical field especially a kind of waste battery pyrolysis furnace pyrolysis oil gas collection and delivery device. BACKGROUND

[0002] In the process of waste battery recycling, pyrolysis oil gas generated by pyrolysis furnace needs to be collected. In existing collection equipment, pyrolysis furnace is often connected with waste gas incinerator through flue gas pipeline, and negative pressure generated in waste gas incinerator sucks pyrolysis oil gas in pyrolysis furnace into waste gas incinerator for incineration. Alternatively, fan is used to extract pyrolysis oil gas in pyrolysis furnace and send it to waste gas incinerator for incineration.

[0003] The above-mentioned prior art can cause adverse consequences, as follows:

[0004] (1) Connecting pyrolysis furnace with waste gas incinerator through flue, and sucking pyrolysis oil gas in pyrolysis furnace into waste gas incinerator for incineration through negative pressure in waste gas incinerator can cause battery black powder in pyrolysis furnace to be sucked into waste gas incinerator together with flue gas, resulting in ash accumulation and coking in incinerator, causing combustion device and pipeline to be blocked and system to be unable to operate. A large amount of black powder enters subsequent tail gas treatment system, causing load of tail gas treatment system to increase and pollutants to be discharged out of standard. At the same time, battery black powder, as one of pyrolysis recycling products of battery, has high economic value. This scheme also causes certain increase in operating cost and waste of resources.

[0005] (2) Using fan to extract pyrolysis oil gas in pyrolysis furnace and send it to waste gas incinerator for incineration can better control pyrolysis oil gas in pyrolysis furnace to enter waste gas incinerator for incineration. However, a large amount of black powder and pyrolysis oil gas can be deposited and condensed in pyrolysis fan, causing fan to be blocked and unable to operate normally. At the same time, a large amount of black powder still enters waste gas treatment system at rear end. UTILITY MODEL CONTENTS

[0006] The utility model solves the technical problem of overcoming the deficiencies in the prior art and providing a waste battery pyrolysis furnace pyrolysis oil gas collection and delivery device. Through coupling of various devices such as high-temperature dust removal, high-temperature pyrolysis fan pressurization and high-temperature nitrogen gas system injection, pyrolysis oil gas of waste battery recycling system can be safely and efficiently delivered to tail gas treatment device.

[0007] The utility model solves the technical problem by adopting the following technical scheme:

[0008] A waste battery pyrolysis furnace pyrolysis oil gas collection and delivery device is used to collect and deliver pyrolysis oil gas generated by pyrolysis furnace, comprising high-temperature nitrogen gas injection assembly and pyrolysis oil gas delivery assembly.

[0009] The pyrolysis oil gas conveying assembly comprises a first flue and a high-temperature dust collector, one end of the first flue is connected with a gas outlet end of a pyrolysis furnace, and the other end of the first flue is connected with a gas inlet end of the high-temperature dust collector; the gas outlet end of the high-temperature dust collector is connected with a gas inlet end of a booster fan through a second flue, and a gas outlet end of the booster fan is connected with a gas inlet end of a waste gas incinerator through a third flue; a spraying assembly is installed on the high-temperature dust collector;

[0010] The high-temperature nitrogen gas spraying assembly comprises a high-temperature nitrogen making device and a nitrogen gas main pipeline installed at an outlet of the high-temperature nitrogen making device, and the nitrogen gas main pipeline is provided with first, second, third and fourth pipelines which are distributed in parallel.

[0011] The first pipeline is communicated with the first flue, the second pipeline is communicated with a gas inlet end of the spraying assembly, the third pipeline is communicated with the second flue, and the fourth pipeline is communicated with a gas inlet end of the booster fan.

[0012] Further, the high-temperature nitrogen making device comprises a nitrogen making machine and a nitrogen gas storage tank which are connected through pipelines, and the nitrogen gas storage tank is connected with the nitrogen gas main pipeline through a gas outlet end; the nitrogen gas storage tank is internally provided with a nitrogen gas heater.

[0013] Further, the second flue is provided with a first plug valve, and the first plug valve is arranged close to the booster fan.

[0014] Further, the high-temperature dust collector is connected with a receiving frame at a bottom discharge port.

[0015] Further, the first pipeline is arranged close to the gas outlet end of the pyrolysis furnace at a connecting position of the first pipeline and the first flue.

[0016] Further, the third pipeline is arranged close to the gas inlet end of the high-temperature dust collector at a connecting position of the third pipeline and the second flue.

[0017] Further, the first, second, third and fourth pipelines, the first flue, the high-temperature dust collector, the second flue and the booster fan are respectively wrapped with a heat preservation layer for reducing heat loss.

[0018] Further, the first plug valve is wrapped with a heat preservation layer.

[0019] Further, a second plug valve is installed at the bottom discharge port of the high-temperature dust collector.

[0020] The utility model discloses the beneficial effect is: The utility model discloses the beneficial effect is:

[0021] (1), it is equipped with high temperature dust collector and booster fan, high temperature dust collector filters pyrolysis oil gas, filters and collects a large number of black powder in pyrolysis oil gas, the collected black powder is one of important products of waste battery recycling system, simultaneously reduces the burden of subsequent tail gas treatment equipment, prolongs the service life of equipment;The booster fan can effectively ensure that the operating condition in the pyrolysis furnace is stably operated, prevent the problems such as the operating condition in the pyrolysis furnace being affected by the pressure difference of high temperature dust collector (for example, the pyrolysis oil gas in the pyrolysis furnace cannot be extracted by the negative pressure in the subsequent tail gas treatment equipment) and the like;

[0022] (2), it is equipped with high temperature nitrogen gas blowing assembly, heats the equipment in the furnace starting stage, replaces oxygen, blows high temperature dust collector in the running stage, maintains temperature in the furnace stopping stage, controls oxygen content, ensures that the pyrolysis oil gas in the pyrolysis oil gas conveying assembly is safely and efficiently conveyed to the tail gas treatment device;If the pyrolysis oil gas condenses in the running stage, the pyrolysis oil can also be softened and volatilized again through the high temperature nitrogen gas blowing assembly, to ensure the stable operation of the system;Avoid the phenomenon that the pyrolysis oil gas condenses and adheres to the equipment pipeline due to the decrease of equipment temperature, causes the equipment pipeline to be blocked, cannot run and the like. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description, and obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.

[0024] Figure 1 It is a structural schematic diagram of the present application.

[0025] In the figure: 100. High temperature nitrogen gas blowing assembly, 200. Pyrolysis oil gas conveying assembly;

[0026] 1. Nitrogen generator, 2. Nitrogen gas storage tank, 3. Nitrogen gas heater, 4. Nitrogen gas main pipeline, 5. First pipeline, 6. Second pipeline, 7. Third pipeline, 8. Fourth pipeline, 9. First flue, 10. High temperature dust collector, 11. Second flue, 12. Booster fan, 13. Third flue, 14. First plug valve, 15. Pyrolysis furnace, 16. Waste gas incinerator, 17. Material receiving frame, 18. Second plug valve, 19. Blowing assembly. DETAILED DESCRIPTION

[0027] It should be pointed out that the following detailed description is exemplary, and is intended to provide further description of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as generally understood by those skilled in the art to which the present application belongs.

[0028] It is to be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, components, and / or groups thereof, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0029] The technical solutions of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0030] As Figure 1 The waste battery pyrolysis furnace pyrolysis oil gas collecting and conveying device shown in the figure is used for collecting and conveying the pyrolysis oil gas generated by the pyrolysis furnace 15, comprising a high-temperature nitrogen blowing assembly 100 and a pyrolysis oil gas conveying assembly 200; the pyrolysis oil gas conveying assembly 200 comprises a first flue 9 and a high-temperature dust collector 10, one end of the first flue 9 is connected with the gas outlet end of the pyrolysis furnace 15, and the other end of the first flue 9 is connected with the gas inlet end of the high-temperature dust collector 10; the gas outlet end of the high-temperature dust collector 10 is connected with the gas inlet end of the booster fan 12 through the second flue 11, and the gas outlet end of the booster fan 12 is connected with the gas inlet end of the waste gas incinerator 16 through the third flue 13; the high-temperature dust collector 10 is installed with a blowing assembly 19; the high-temperature nitrogen blowing assembly 100 comprises a high-temperature nitrogen making device and a nitrogen main pipeline 4 installed at the outlet of the high-temperature nitrogen making device, and the nitrogen main pipeline 4 is provided with the first pipeline 5, the second pipeline 6, the third pipeline 7 and the fourth pipeline 8 distributed in parallel; the first pipeline 5 is communicated with the first flue 9, the second pipeline 6 is communicated with the gas inlet end of the blowing assembly 19, the third pipeline 7 is communicated with the second flue 11, and the fourth pipeline 8 is communicated with the gas inlet end of the booster fan 12.

[0031] The high-temperature nitrogen making device comprises a nitrogen making machine 1 and a nitrogen storage tank 2 connected by pipelines, and the gas outlet end of the nitrogen storage tank 2 is connected with the nitrogen main pipeline 4; the nitrogen storage tank 2 is built-in with a nitrogen heater 3.

[0032] The first plug valve 14 is arranged close to the booster fan 12 on the second flue 11.

[0033] The high-temperature dust collector 10 is connected with a receiving frame 17 at the bottom discharge port, and the second plug valve 18 is installed at the bottom discharge port of the high-temperature dust collector 10.

[0034] The first pipeline 5 is arranged close to the gas outlet end of the pyrolysis furnace 15 at the connection position with the first flue 9.

[0035] The third pipeline 7 is connected with the second flue 11 near the gas inlet end of the high-temperature dust collector 10.

[0036] The first pipeline 5, the second pipeline 6, the third pipeline 7, the fourth pipeline 8, the first flue 9, the high-temperature dust collector 10, the second flue 11, the booster fan 12 and the outside of the first plug valve 14 are respectively wrapped with a heat preservation layer for reducing heat loss.

[0037] The working process of the waste battery pyrolysis furnace oil gas collection and conveying device is as follows:

[0038] (1) High-temperature nitrogen preparation stage: The nitrogen machine 1 manufactures nitrogen and sends it into the nitrogen storage tank 2 for storage, and the nitrogen heater 3 heats the nitrogen in the nitrogen storage tank 2 to > 300℃;

[0039] (2) Start-up stage: The high-temperature nitrogen in the nitrogen storage tank 2 is first output from the nitrogen main pipeline 4, then sent into the first flue 9 through the first pipeline 5, sent into the high-temperature dust collector 10 through the second pipeline 6 via the blowing assembly 19, sent into the second flue 11 through the third pipeline 7, and sent into the booster fan 12 through the fourth pipeline 8, so that the conveying temperature of the pyrolysis oil gas conveying assembly 200 is > 250℃, which prevents the pyrolysis oil gas from condensing, and at the same time, the oxygen content in the pyrolysis oil gas conveying assembly 200 is < 1%, preventing the risk of high-temperature pyrolysis oil gas meeting oxygen gas being flammable and explosive;

[0040] (3) Running stage: The waste battery pyrolysis oil gas in the pyrolysis furnace 15 passes through the pyrolysis furnace 15 and the first flue 9, is sent into the high-temperature dust collector 10 to remove black powder, and after the black powder is removed, the pyrolysis oil gas enters the booster fan 12 through the second flue 11, is boosted, and then is sent into the waste gas incinerator 16 through the third flue 13 for treatment; during the running process, as the black powder adhered to the filter bag in the high-temperature dust collector 10 increases, the pressure difference becomes larger, at this time, the opening degree of the first plug valve 14 and the frequency conversion load of the booster fan 12 are adjusted to ensure that the running conditions in the pyrolysis furnace 15 are stably running; at the same time, when the pressure difference in the high-temperature dust collector 10 reaches the upper limit of the pressure difference, the blowing assembly 19 is opened to pulse blow the filter bag in the inner cavity of the high-temperature dust collector 10, and the high-temperature nitrogen is used to blow off the black powder adhered to the filter bag and collect it into the material receiving frame 17; when the temperature in the pyrolysis oil gas conveying assembly 200 decreases, the high-temperature nitrogen blowing system can also be opened to increase the temperature in the assembly with high-temperature nitrogen to prevent the pyrolysis oil gas from condensing in the assembly;

[0041] (4), shutdown stage: with pyrolysis furnace 15 stop feeding, pyrolysis furnace 15 material reduces, pyrolysis oil gas gradually reduces, the reduction of high temperature pyrolysis oil gas will inevitably cause the temperature of pyrolysis oil gas conveying assembly 200 to reduce, cause pyrolysis oil gas condensation;At this time, open high temperature nitrogen injection assembly 100, keep the temperature of pyrolysis oil gas conveying assembly 200, reduce the condensation of pyrolysis oil gas in the assembly, ensure that pyrolysis oil gas is safely and stably conveyed to waste gas incinerator 16 for treatment, and the pyrolysis oil gas treated by waste gas incinerator 16 is introduced into the subsequent tail gas treatment equipment from the outlet of waste gas incinerator 16.

[0042] In summary, the utility model has the advantages of simple structure and reasonable design.

[0043] (1), high temperature dust collector 10 and booster fan 12 are arranged, the high temperature dust collector 10 filters pyrolysis oil gas, filters and collects a large amount of black powder in the pyrolysis oil gas, the collected black powder is one of important products of waste battery recycling system, simultaneously reduces the burden of subsequent tail gas treatment equipment, prolongs the service life of equipment, and the booster fan 12 can effectively ensure that the operation condition in the pyrolysis furnace is stably operated, prevents problems such as the operation condition in the pyrolysis furnace domain being influenced by the pressure difference of high temperature dust collector 10 (for example, pyrolysis oil gas in the pyrolysis furnace cannot be extracted by the negative pressure in the subsequent tail gas treatment equipment) and the like.

[0044] (2), high temperature nitrogen injection assembly 100 is arranged, heating equipment is started in the start-up stage, oxygen is replaced, high temperature dust collector 10 is injected in the running stage, temperature is maintained in the shutdown stage, oxygen content is controlled, and pyrolysis oil gas in pyrolysis oil gas conveying assembly 200 is safely and efficiently conveyed to the tail gas treatment device;If pyrolysis oil gas condensation occurs in the running stage, high temperature nitrogen injection assembly 100 can also make pyrolysis oil soften and volatilize again, to ensure the stable operation of the system;Avoiding the phenomenon that pyrolysis oil gas condensation and adhesion on the equipment pipeline, causing equipment pipeline blockage, unable to run and the like due to the temperature reduction of equipment.

[0045] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the utility model, and not to limit them;Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features;And these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A device for collecting and transporting pyrolysis oil and gas from a waste battery pyrolysis furnace, used for collecting and transporting pyrolysis oil and gas generated by a pyrolysis furnace (15), characterized in that: It comprises a high-temperature nitrogen blowing component (100) and a pyrolysis oil and gas delivery component (200); The pyrolysis oil and gas conveying assembly (200) comprises a first flue (9) and a high-temperature dust collector (10), wherein one end of the first flue (9) is connected to the gas outlet of the pyrolysis furnace (15), and the other end of the first flue (9) is connected to the gas inlet of the high-temperature dust collector (10); the gas outlet of the high-temperature dust collector (10) is connected to the gas inlet of the booster fan (12) through the second flue (11), and the gas outlet of the booster fan (12) is connected to the gas inlet of the waste gas incinerator (16) through the third flue (13); and a blowing assembly (19) is installed on the high-temperature dust collector (10); The high-temperature nitrogen blowing assembly (100) comprises a high-temperature nitrogen generator and a nitrogen main pipeline (4) installed at the outlet of the high-temperature nitrogen generator, wherein the nitrogen main pipeline (4) is provided with a first pipeline (5), a second pipeline (6), a third pipeline (7) and a fourth pipeline (8) distributed in parallel; The first pipeline (5) is connected to the first flue (9), the second pipeline (6) is connected to the gas inlet end of the blowing assembly (19), the third pipeline (7) is connected to the second flue (11), and the fourth pipeline (8) is connected to the gas inlet end of the booster fan (12).

2. The device for collecting and conveying pyrolysis oil and gas from a waste battery pyrolysis furnace according to claim 1, characterized in that: The high-temperature nitrogen production device comprises a nitrogen generator (1) and a nitrogen storage tank (2) connected by pipelines, wherein the gas outlet end of the nitrogen storage tank (2) is connected to a nitrogen main pipeline (4); and the nitrogen storage tank (2) is equipped with a nitrogen heater (3).

3. The device for collecting and conveying pyrolysis oil and gas from a waste battery pyrolysis furnace according to claim 1, characterized in that: A first flapper valve (14) is provided on the second flue (11), and the first flapper valve (14) is arranged close to the booster fan (12).

4. The device for collecting and conveying pyrolysis oil and gas from a waste battery pyrolysis furnace according to claim 1, characterized in that: The bottom discharge port of the high-temperature dust collector (10) is connected to a material receiving frame (17).

5. The device for collecting and conveying pyrolysis oil and gas from a waste battery pyrolysis furnace according to claim 1, characterized in that: The connection between the first pipeline (5) and the first flue (9) is arranged close to the gas outlet end of the pyrolysis furnace (15).

6. The device for collecting and conveying pyrolysis oil and gas from a waste battery pyrolysis furnace according to claim 1, characterized in that: The connection between the third pipeline (7) and the second flue (11) is arranged close to the gas inlet end of the high-temperature dust collector (10).

7. The device for collecting and conveying pyrolysis oil and gas from a waste battery pyrolysis furnace according to claim 4, characterized in that: The first pipeline (5), the second pipeline (6), the third pipeline (7), the fourth pipeline (8), the first flue (9), the high-temperature dust collector (10), the second flue (11) and the booster fan (12) are respectively wrapped with an insulation layer to reduce heat loss.

8. The device for collecting and conveying pyrolysis oil and gas from a waste battery pyrolysis furnace according to claim 3, characterized in that: The outer side of the first plug valve (14) is wrapped with a heat-insulating layer.

9. The device for collecting and conveying pyrolysis oil and gas from a waste battery pyrolysis furnace according to claim 4, characterized in that: A second gate valve (18) is installed at the bottom discharge port of the high-temperature dust collector (10).

Images