Pyrolysis waste gas settling box

Abstract

The utility model relates to the technical field of pyrolysis waste gas treatment and discloses a pyrolysis waste gas settling box which comprises a waste gas settling box, a gas inlet pipe and a gas outlet pipe, the gas inlet pipe and the gas outlet pipe are arranged on the waste gas settling box, and a dredging access door corresponding to the gas inlet pipe is correspondingly arranged on the waste gas settling box. A gas outlet pressure regulating valve and a pressure sensor are arranged on the exhaust pipe and used for regulating the negative pressure in the waste gas settling box, and an oxygen concentration detection assembly is further arranged on the waste gas settling box and used for detecting the oxygen concentration at the exhaust pipe; an access cover is arranged on the upper end surface of the waste gas settling box in a covering manner and is arranged in a hoisting manner through an access cover plate fixing piece. According to the device, blockage of the gas inlet pipe of the settling box can be conveniently cleaned, and meanwhile, the problems of spontaneous combustion and the like caused by high-temperature pyrolysis waste gas encountering air are effectively avoided by linkage of data such as negative pressure and oxygen concentration in the settling box and related adjusting equipment of a main control system.

Description

Technical Field

[0001] The utility model relates to the technical field of pyrolysis waste gas treatment, in particular to a pyrolysis waste gas settling box. Background Art

[0002] With the promotion of new energy vehicles in my country, the power battery disassembly market represented by lithium batteries has gradually entered its peak period. Since high concentrations of toxic and harmful gases will be produced during the disassembly and crushing of lithium batteries, and the gases are flammable and explosive, they have always restricted the development of the industry. Since pyrolysis waste gas is a small molecule gas produced by the high-temperature pyrolysis of organic matter such as electrolyte and diaphragm in a high-temperature kettle under nitrogen protection at high temperature (generally above 400°C), the composition is relatively complex. In addition to undecomposed electrolyte, ethylene carbonate, propylene carbonate, diethyl carbonate and other macromolecules, there are also flammable small molecule gases such as methane, hydrogen, and CO. It also contains a large amount of graphite carbon black and metal oxide particles. The temperature and concentration of combustible gas are both high. The temperature of pyrolysis waste gas is generally above 200°C. Once the gas encounters oxygen, local combustion or explosion will occur.

[0003] Since the pyrolysis waste gas contains a large amount of graphitized carbon black and metal oxide particles, in order to reduce the content of particles entering the incinerator, the pyrolysis waste gas needs to be first settled. In the daily use of the existing waste gas settling box, it is inconvenient to clean the air intake pipe that has a smaller ventilation diameter due to carbon black deposition. It is also inconvenient for daily maintenance and management, and the overall structural design needs to be optimized. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the shortcomings of the prior art, the utility model provides a pyrolysis waste gas settling box, which solves the problem that it is inconvenient to deal with the carbon black deposition in the intake pipe during the pyrolysis waste gas settling process of the existing battery, while the overall structure needs to be optimized and there are inconveniences in daily inspection and maintenance.

[0006] (II) Technical solution

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A pyrolysis waste gas settling box comprises a waste gas settling box and an air intake pipe and an exhaust pipe arranged on the waste gas settling box, the waste gas settling box is provided with a clearing and maintenance door corresponding to the air intake pipe, the exhaust pipe is provided with an outlet pressure regulating valve and a pressure sensor for adjusting the negative pressure in the waste gas settling box, the waste gas settling box is also provided with an oxygen concentration detection component for detecting the oxygen concentration at the exhaust pipe; the upper end surface of the waste gas settling box is covered with an inspection cover, and the inspection cover is hoisted and arranged by an inspection cover plate fixing piece.

[0009] Preferably, a sewage inlet is provided on one side of the exhaust gas settling box, and a water seal is adopted between the inspection cover and the exhaust gas settling box.

[0010] Preferably, a water tank is provided on one side of the exhaust gas settling tank, and the water tank is connected to an emergency spray pipe through a circulating water pump. The emergency spray pipe extends into the upper part of the exhaust gas settling tank and a plurality of nozzles are arranged on the emergency spray pipe. The nozzles can be inspected and maintained by opening the inspection cover.

[0011] Preferably, a plurality of filter components are detachably arranged in the water tank, and the inner cavity of the water tank is automatically replenished with water according to the water level through an automatic water replenishment component.

[0012] Preferably, a reflux pipe is arranged in communication between the exhaust gas settling tank and the water tank, and the liquid in the lower part of the inner cavity of the exhaust gas settling tank can enter the water tank through the reflux pipe.

[0013] (III) Beneficial effects

[0014] The utility model has the following beneficial effects:

[0015] The pyrolysis waste gas settling box can be opened conveniently by setting a dredging inspection door, and the piled materials in the intake pipe that reduce the diameter of the intake pipe can be cleaned regularly; the outlet pressure regulating valve, pressure sensor and oxygen concentration detection component can ensure that the negative pressure at the exhaust pipe is at the required level, so that no air enters during normal production, so as to ensure that the high-temperature and high-concentration organic waste gas discharged into the waste gas settling box will not burn due to encountering oxygen. The inspection cover is installed by hoisting, so that when an accidental flash explosion occurs in the waste gas settling box, it can be automatically lifted up with the pressure without causing other damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the main view of the utility model;

[0017] Figure 2 This is a schematic diagram of the top view structure of the utility model;

[0018] Figure 3 This is a side view of the structure of the utility model;

[0019] Figure 4 It is a front structural schematic diagram of the utility model.

[0020] In the figure: 1. Exhaust gas settling box; 2. Inlet pipe; 3. Exhaust pipe; 4. Outlet pressure regulating valve; 5. Oxygen concentration detection component; 6. Sewage inlet; 7. Water tank; 8. Filter component; 9. Circulating water pump; 10. Unblocking inspection door; 11. Inspection cover; 12. Inspection cover plate fixings; 13. Emergency spray pipe; 14. Reflux pipe. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1 The utility model provides a technical solution: a pyrolysis waste gas settling box 1, comprising a waste gas settling box 1 and an air intake pipe 2 and an exhaust pipe 3 arranged on the waste gas settling box 1, a dredging inspection door 10 corresponding to the air intake pipe 2 is provided on the waste gas settling box 1, an outlet pressure regulating valve 4 and a pressure sensor are arranged on the exhaust pipe 3 to adjust the negative pressure in the waste gas settling box 1, and an oxygen concentration detection component 5 is also arranged on the waste gas settling box 1 to detect the oxygen concentration at the exhaust pipe 3; an inspection cover 11 is arranged on the upper end surface of the waste gas settling box 1, and the inspection cover 11 is hoisted and arranged by an inspection cover plate fixing member 12.

[0023] The utility model can conveniently open the inspection door 10 to lift and clean the piled materials in the air intake pipe 2 that reduce the diameter of the air intake pipe 2; through the outlet pressure regulating valve 4, pressure sensor and oxygen concentration detection component 5, it can ensure that the negative pressure at the exhaust pipe 3 is at the required level, so that no air enters during normal production, so as to ensure that the high-temperature and high-concentration organic waste gas discharged into the waste gas settling box 1 will not burn due to encountering oxygen. The inspection cover 11 is installed by hoisting, so that when an accidental flash explosion occurs in the waste gas settling box 1, it can be automatically lifted up with the pressure without causing other damage.

[0024] Reference Figure 1 and 2 As shown, in this embodiment, a sewage inlet 6 is provided on one side of the waste gas settling tank 1, and a water seal is adopted between the inspection cover 11 and the waste gas settling tank 1. Through the sewage inlet 6, the carbon black, metal oxides, tar, etc. in the pyrolysis gas are insoluble in water, so the large particles with high specific gravity will sink to the bottom of the waste gas settling tank 1. A diaphragm pump can be arranged in the sewage inlet 6 to pump into the filter press for filtering and resource reuse. At the same time, in the case of lighter floating objects and tar, they can be manually cleaned regularly through the sewage inlet 6 to a special container for further pyrolysis treatment.

[0025] Reference Figure 2 and 4As shown, in this embodiment, a water tank 7 is provided on one side of the exhaust gas settling box 1, and the water tank 7 is connected to an emergency spray pipe 13 through a circulating water pump 9. The emergency spray pipe 13 extends into the upper part of the exhaust gas settling box 1 and a plurality of nozzles are arranged on the emergency spray pipe 13. The nozzles can be inspected and maintained by opening the inspection cover 11. By providing the water tank 7 and the emergency spray pipe 13, the exhaust gas settling box 1 can be sprayed in an emergency, which is convenient for emergency cooling of the settling box containing high-temperature gas, so that personnel can perform subsequent inspection and maintenance.

[0026] Reference Figure 2 As shown, in this embodiment, a plurality of filter components 8 are detachably arranged in the water tank 7, and the inner cavity of the water tank 7 is automatically replenished with water according to the water level through the automatic water replenishment component. The filter components arranged in the water tank 7 can intercept large particles in the water tank 7 to prevent clogging of the circulating water pump 9 and the nozzle. At the same time, under the action of the automatic water replenishment component, the entire water tank 7 can be automatically replenished with water according to the required water level.

[0027] In this embodiment, a reflux pipe 14 is arranged between the exhaust gas settling tank 1 and the water tank 7, and the liquid in the lower part of the inner cavity of the exhaust gas settling tank 1 can enter the water tank 7 through the reflux pipe 14. The reflux pipe 14 can be used to recycle the liquid sprayed in the exhaust gas settling tank 1.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pyrolysis waste gas settling box, comprising a waste gas settling box and an air inlet pipe and an exhaust pipe arranged on the waste gas settling box, characterized in that: The exhaust gas settling box is provided with a clearing and maintenance door corresponding to the intake pipe, and the exhaust pipe is provided with an outlet pressure regulating valve and a pressure sensor for adjusting the negative pressure in the exhaust gas settling box. The exhaust gas settling box is also provided with an oxygen concentration detection component for detecting the oxygen concentration at the exhaust pipe; the upper end surface of the exhaust gas settling box is covered with an inspection cover, and the inspection cover is hoisted and arranged by an inspection cover plate fixing piece.

2. A pyrolysis waste gas settling box according to claim 1, characterized in that: A sewage inlet is provided on one side of the exhaust gas settling box, and a water seal is adopted between the inspection cover and the exhaust gas settling box.

3. A pyrolysis waste gas settling box according to claim 1, characterized in that: A water tank is provided on one side of the exhaust gas settling tank, and the water tank is connected to an emergency spray pipe through a circulating water pump. The emergency spray pipe extends into the upper part of the exhaust gas settling tank and a plurality of nozzles are arranged on the emergency spray pipe. The nozzles can be inspected and maintained by opening the inspection cover.

4. A pyrolysis waste gas settling box according to claim 3, characterized in that: A plurality of filter components are detachably arranged in the water tank, and the inner cavity of the water tank is automatically filled with water according to the water level through an automatic water filling component.

5. A pyrolysis waste gas settling box according to claim 4, characterized in that: A reflux pipe is arranged between the exhaust gas settling tank and the water tank, and liquid in the lower part of the inner cavity of the exhaust gas settling tank can enter the water tank through the reflux pipe.

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