Dust removal device for tail gas of incinerator

Abstract

The utility model provides a dust removal device for incinerator tail gas, which relates to the technical field of incinerator tail gas treatment, and comprises a treatment box, the middle lower part of the treatment box is communicated with a gas delivery pipe, the bottom of the treatment box is provided with a liquid outlet, and the liquid outlet is provided with an electromagnetic valve; an air outlet is formed in the upper portion of the treatment box, a negative pressure fan is arranged on one side of the air outlet, an alkali liquor box and a first suction pump are further arranged on the treatment box, and the input end of the first suction pump communicates with the alkali liquor box; according to the device, the deacidification process of acid gas in the incinerator tail gas and the sedimentation removal process of dust and fly ash can be completed in the treatment box at the same time, integrated design is achieved, meanwhile, filtering equipment is convenient to detach to be cleaned or replaced, and the dust removal effect of the incinerator tail gas is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of incinerator tail gas treatment, in particular to a dust removal device for incinerator tail gas. Background Art

[0002] The incinerator is one of the indispensable equipment in the chemical industry. It is often used as a harmless treatment equipment for medical and domestic waste and animal harmless treatment. Its principle is to use the combustion of fuels such as coal, oil, and gas to burn and carbonize the objects to be treated at high temperature to achieve the purpose of disinfection. The incinerator is an environmental protection equipment that burns waste gas, waste liquid, solid waste: for example, toxic gas, toxic rocket liquid fuel, medical waste, domestic waste, animal carcasses, etc. at high temperature to reduce or shrink the quantitative number. At the same time, it is a product that utilizes part of the thermal energy of the incineration medium. When the chemical incinerator is in use, an exhaust dust removal device is required to remove the exhaust dust.

[0003] Announcement No. CN216418886U proposes a chemical incinerator exhaust gas dust removal device, which can effectively remove dust from the incinerator exhaust gas through the coordinated cooperation of a water filter layer, a filter screen and an ultraviolet lamp. However, the filter screen is fixed inside the tank and cannot be quickly disassembled and replaced. At the same time, additional exhaust gas deacidification equipment needs to be configured before and after the process to treat various acidic gases in the exhaust gas. The two processes cannot be implemented on a set of equipment. Utility Model Content

[0004] The purpose of the utility model is to solve the problems raised in the above background technology, and then propose a dust removal device for incinerator tail gas.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A dust removal device for incinerator tail gas comprises a treatment box, the middle and lower parts of the treatment box are connected with an air supply pipe, a liquid outlet is arranged at the bottom of the treatment box, a solenoid valve is arranged on the liquid outlet, an air outlet is arranged at the upper part of the treatment box and a negative pressure fan is arranged on one side of the air outlet, an alkali liquid tank and a first suction pump are also arranged on the treatment box, the input end of the first suction pump is connected with the alkali liquid tank, the output end of the first suction pump is connected with a deacidification and dust reduction pipe fixedly arranged inside the treatment box, a plurality of first atomizing nozzles are arranged on the deacidification and dust reduction pipe, the liquid outlet is connected with an inclined output pipe, one end of the output pipe is connected with a waste liquid tank, a filter plate is movably arranged in the waste liquid tank and a circulation pump is arranged on one side of the waste liquid tank.

[0007] The device can simultaneously complete the deacidification process of acidic gas in the incinerator tail gas and the sedimentation and removal process of dust and fly ash in the treatment box. It has an integrated design and the filter equipment is easy to disassemble for cleaning or replacement, which further improves the dust removal effect of the incinerator tail gas.

[0008] Furthermore, a water tank and a second suction pump are provided on the treatment box, the input end of the second suction pump is connected to the water tank, and the output end of the second suction pump is connected to an auxiliary dust reduction pipe fixedly arranged inside the treatment box and distributed before and after the deacidification dust reduction pipe, and the auxiliary dust reduction pipe is provided with a plurality of second atomizing nozzles which are staggered with the first atomizing nozzles.

[0009] The above solution sprays water mist into the exhaust gas through the water tank in conjunction with the second suction pump and the second atomizing nozzle, which can further improve the sedimentation effect and ensure that the fly ash and dust in the exhaust gas can be completely settled and removed.

[0010] Furthermore, one end of the circulation pump is connected to a deacidification and dust reduction pipe.

[0011] The above scheme re-introduces the weak alkaline solution after separation into the deacidification and dust reduction pipe for secondary spraying and utilization, which can further improve the utilization rate of the alkaline solution.

[0012] Furthermore, the water tank and the alkali liquid tank are both provided with a feed hopper and an alarm, and the inside of the water tank and the alkali liquid tank are both provided with a liquid level sensor, and the liquid level sensor and the alarm are electrically connected.

[0013] The above scheme can timely know the changes in the liquid levels in the water tank and the alkali solution tank through the liquid level sensor. When the liquid level is low, the alarm is triggered to prompt the staff to replenish the liquid immediately.

[0014] Furthermore, a sealing door is rotatably connected to the waste liquid box, and card slots are symmetrically arranged in the waste liquid box, and filter plates are matched in the card slots.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] Compared with the prior art, the device can simultaneously complete the deacidification process of acidic gas in the incinerator exhaust gas and the sedimentation and removal process of dust and fly ash in the treatment box through the gas pipe, solenoid valve, alkali solution box, first suction pump and first atomizing nozzle. It has an integrated design and the filtering equipment is easy to disassemble for cleaning or replacement, so the dust removal effect of the incinerator exhaust gas is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the filter plate installation;

[0019] Reference numerals:

[0020] 1. Processing box; 101. Air pipe; 102. Liquid outlet; 103. Solenoid valve; 11. Alkali liquid tank; 12. Water tank; 13. First suction pump; 14. Deacidification and dust reduction pipe; 15. First atomizing nozzle; 16. Negative pressure fan; 17. Output pipe; 18. Second atomizing nozzle; 19. Second suction pump; 2. Waste liquid tank; 21. Filter plate; 22. Card slot; 23. Sealing door; 3. Circulation pump; 31. Feed hopper; 32. Alarm. 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. The utility model is further described in combination with the drawings and embodiments:

[0022] like Figure 1 and Figure 2 As shown, a dust removal device for incinerator tail gas comprises a treatment box 1, a gas pipe 101 is connected to the middle and lower part of the treatment box 1, one end of the gas pipe 101 is connected to the gas outlet of the incinerator, the incinerator is not shown in the figure, a liquid outlet 102 is arranged at the bottom of the treatment box 1, a solenoid valve 103 is arranged on the liquid outlet 102, an air outlet is arranged at the upper part of the treatment box 1 and a negative pressure fan 16 is arranged on one side of the air outlet, an alkali liquid tank 11 and a first suction pump 13 are also arranged on the treatment box 1, the input end of the first suction pump 13 is connected to the alkali liquid tank 11, the output end of the first suction pump 13 is connected to a deacidification and dust reduction pipe 14 fixedly arranged inside the treatment box 1, a plurality of first atomizing nozzles 15 are arranged on the deacidification and dust reduction pipe 14, the liquid outlet 102 is connected to an inclined output pipe 17, one end of the output pipe 17 is connected to a waste liquid tank 2, a filter plate 21 is movably arranged in the waste liquid tank 2 and a circulating pump 3 is arranged on one side of the waste liquid tank 2.

[0023] Further refinement of the embodiment of the present utility model is as follows: Figure 1 and Figure 2 As shown, a sealing door 23 is rotatably connected to the waste liquid box 2, and a card slot 22 is symmetrically arranged in the waste liquid box 2, and a filter plate 21 is matched in the card slot 22.

[0024] It should be noted that the solenoid valve 103, the negative pressure fan 16, the first suction pump 13, the circulation pump 3, the alarm 32 and the liquid level sensor are all electrically connected to the controller, which is not shown in the figure.

[0025] The workflow of this utility model:

[0026] First, the tail gas generated during the high-temperature incineration process of the incinerator is introduced into the gas pipeline 101, and then the tail gas moves along the gas pipeline 101 into the treatment box 1. In the initial state, the controller controls the solenoid valve 103 to be closed, and the negative pressure fan 16 is in a working state. When the tail gas starts to be introduced into the treatment box 1, the controller immediately controls the first suction pump 13 to work to extract alkali solution from the alkali solution tank 11 and inject it into the deacidification and dust reduction pipe 14, and then sprays it out through a plurality of first atomizing nozzles 15. At this time, the acid gas in the tail gas can be effectively neutralized and deacidified, and the fly ash and dust in the tail gas can also be precipitated. The atomizing spray makes the coverage area of ​​the alkali solution wider and the contact with the tail gas more sufficient. As the tail gas rises, the sedimentation and removal process of most of the fly ash and dust inside it and the deacidification process of most of the acid gas can be completed. Then, under the attraction of the negative pressure fan 16, the remaining small amount of gas is injected into the subsequent purification equipment and purified, and then it can be discharged to the outside through the chimney;

[0027] As the dust removal and deacidification process is continuously carried out, waste liquid is generated in the treatment box 1, and the waste liquid is mixed with fly ash and dust. When the waste liquid reaches a certain amount, the solenoid valve 103 is immediately controlled to open, and then this part of the waste liquid will flow into the waste liquid tank 2 along the output pipe 17. When the waste liquid enters the waste liquid tank 2, the fly ash and dust will be separated and filtered out, and then the remaining dust-free liquid will be sucked to a fixed area by the circulation pump 3 for purification and discharge. When the liquid transfer is completed, the sealing door 23 is immediately opened to clean the filter plate 21. After cleaning, the filter plate 21 is put back into the waste liquid tank 2. It should be noted that during the cleaning of the filter plate 21, the solenoid valve 103 is in a closed state, so no waste liquid will flow into the waste liquid tank 2, and the two processes do not interfere with each other.

[0028] Compared with the prior art, the present device can simultaneously complete the deacidification process of acidic gas in the incinerator exhaust gas and the sedimentation and removal process of dust and fly ash in the treatment box 1. It has an integrated design and the filtering equipment is easy to disassemble for cleaning or replacement, which further improves the dust removal effect of the incinerator exhaust gas.

[0029] In some embodiments, Figure 1 As shown, a water tank 12 and a second suction pump 19 are provided on the treatment box 1, the input end of the second suction pump 19 is connected to the water tank 12, and the output end of the second suction pump 19 is connected to an auxiliary dust reduction pipe which is fixed inside the treatment box 1 and distributed before and after the deacidification dust reduction pipe 14. The auxiliary dust reduction pipe is not shown in the figure, and a plurality of second atomizing nozzles 18 which are staggered with the first atomizing nozzles 15 are provided on the auxiliary dust reduction pipe; this embodiment sprays water mist into the exhaust gas through the water tank 12 in cooperation with the second suction pump 19 and the second atomizing nozzle 18, which can further improve the sedimentation effect and ensure that the fly ash and dust in the exhaust gas can be completely settled and removed.

[0030] Further optimization of the above embodiment scheme, such as Figure 1 As shown, the water tank 12 and the alkali liquid tank 11 are both provided with a feed hopper 31 and an alarm 32, and the water tank 12 and the alkali liquid tank 11 are both provided with liquid level sensors inside, and the liquid level sensor and the alarm 32 are electrically connected. The liquid level sensor is not shown in the figure, and specifically comprises an upper liquid level sensor and a lower liquid level sensor. The liquid level changes in the water tank 12 and the alkali liquid tank 11 can be known in time through the liquid level sensor, and when the liquid level is low, the alarm 32 is triggered to prompt the staff to replenish the liquid immediately.

[0031] In other embodiments, one end of the circulating pump 3 is connected to the deacidification and dust reduction pipe 14. The deacidification and dust reduction pipe 14 and the circulating pump 3 are not specifically connected in the figure in this embodiment; the weak alkaline solution after separation is re-introduced into the deacidification and dust reduction pipe 14 for secondary spraying and utilization, which can further improve the utilization rate of the alkaline solution.

[0032] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions in the specification are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the protection required by the utility model. The scope of protection required by the utility model is defined by the attached claims and their equivalents.

Claims

1. A dust removal device for incinerator tail gas, comprising a treatment box (1), the middle and lower part of the treatment box (1) is connected to a gas transmission pipe (101), the bottom of the treatment box (1) is provided with a liquid outlet (102), the liquid outlet (102) is provided with a solenoid valve (103), the upper part of the treatment box (1) is provided with an air outlet and a negative pressure fan (16) is provided on one side of the air outlet, characterized in that: The treatment box (1) is also provided with an alkali liquid tank (11) and a first suction pump (13); the input end of the first suction pump (13) is connected to the alkali liquid tank (11); the output end of the first suction pump (13) is connected to a deacidification and dust reduction pipe (14) fixedly arranged inside the treatment box (1); a plurality of first atomizing nozzles (15) are arranged on the deacidification and dust reduction pipe (14); the liquid outlet (102) is connected to an output pipe (17) arranged obliquely; one end of the output pipe (17) is connected to a waste liquid tank (2); a filter plate (21) is movably arranged inside the waste liquid tank (2); and a circulation pump (3) is arranged on one side of the waste liquid tank (2).

2. A dust removal device for incinerator tail gas according to claim 1, characterized in that: The treatment box (1) is provided with a water tank (12) and a second suction pump (19); the input end of the second suction pump (19) is connected to the water tank (12); the output end of the second suction pump (19) is connected to an auxiliary dust reduction pipe fixedly arranged inside the treatment box (1) and distributed in front and behind the deacidification dust reduction pipe (14); the auxiliary dust reduction pipe is provided with a plurality of second atomizing nozzles (18) which are staggered with the first atomizing nozzles (15).

3. A dust removal device for incinerator tail gas according to claim 1, characterized in that: One end of the circulation pump (3) is connected to a deacidification and dust reduction pipe (14).

4. A dust removal device for incinerator tail gas according to claim 2, characterized in that: The water tank (12) and the alkali liquid tank (11) are both provided with a feed hopper (31) and an alarm (32), and the inside of the water tank (12) and the alkali liquid tank (11) are both provided with a liquid level sensor, and the liquid level sensor and the alarm are electrically connected.

5. The dust removal device for incinerator tail gas according to claim 1, characterized in that: The waste liquid box (2) is rotatably connected with a sealing door (23), and a card slot (22) is symmetrically arranged in the waste liquid box (2), and a filter plate (21) is matched in the card slot (22).

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