Waste gas recovery treatment device of hydrochloric acid synthesis furnace for sodium hydroxide production

Abstract

The utility model discloses a hydrochloric acid synthesis furnace waste gas recovery treatment device for sodium hydroxide production, which comprises an outer shell, a gas guide plate is parallel to the inner wall of a reaction tank, the reaction tank is arranged at the center of the inner wall of the outer shell, a spray tank is distributed at the upper end of the reaction tank, and the lower end of the spray tank is communicated with a water guide-out pipe. Leaking holes are formed in the upper end of the outer wall of the spraying groove, a spraying head is installed on the side face of the upper end of the inner wall of the outer shell, water inlet pipes are installed on the two sides of the spraying head in a communicating mode, and installation heads are installed on the outer walls of the water inlet pipes in a sleeving mode and rotationally connected with the upper ends of the two sides of the outer shell. According to the hydrochloric acid synthesis furnace waste gas recovery treatment device for sodium hydroxide production, waste heat recovery can be carried out on waste gas in the heat exchange bin through the gravity heat pipe, two groups of treatment can be carried out through the reaction tank and the spraying head, the effect is better, sprayed waste water can be independently guided out through the spraying groove and the guiding-out water pipe, and the treatment efficiency is improved. The solution is prevented from flowing into the reaction tank to dilute and is convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas recovery and treatment of hydrochloric acid synthesis furnaces, in particular to a waste gas recovery and treatment device for a hydrochloric acid synthesis furnace used in sodium hydroxide production. Background Art

[0002] The hydrochloric acid synthesis furnace consists of a combustion chamber, a combustion nozzle, a membrane absorption cooling tower and a recovery tower. It has a compact rhythm, high heat transfer efficiency, easy disassembly and assembly, and simple operation. However, during the operation of the hydrochloric acid synthesis furnace, a lot of toxic and harmful gases, namely waste gas, will be emitted, which seriously pollutes the environment and affects human health. Therefore, the waste gas treatment device of the hydrochloric acid synthesis furnace is very important.

[0003] The existing CN117563411A is a hydrochloric acid synthesis furnace waste gas recovery and treatment device that uses an aeration fan to allow the waste gas to pass through the air inlet pipe. The waste gas passes through the aeration fan and then passes through the outer ring pipe into the air supply pipe, and then enters the inner ring pipe, and is finally discharged through the aeration component in the form of low-density bubbles, so that the waste gas is fully in contact with the solution inside the storage box, and then the waste gas can better react with the solution inside the storage box, so that the harmful substances contained in the waste gas can be fully reacted and treated, thereby meeting the emission standards. However, there are shortcomings. The existing equipment cannot recover the waste heat of the waste gas, and cannot independently recover the sprayed wastewater, which may be mixed with the reaction liquid, causing waste. Therefore, a hydrochloric acid synthesis furnace waste gas recovery and treatment device for sodium hydroxide production is needed to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a waste gas recovery and treatment device for a hydrochloric acid synthesis furnace for sodium hydroxide production, so as to solve the problem mentioned in the above background technology that the waste gas recovery and treatment device for the hydrochloric acid synthesis furnace cannot recover the waste heat of the waste gas and cannot independently recover the sprayed waste water, which may be mixed with the reaction liquid, causing waste.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a waste gas recovery and treatment device for a hydrochloric acid synthesis furnace for sodium hydroxide production, comprising an outer shell, a PLC controller electrically connected to the front center of the outer shell, an air inlet connected to the lower end of one side of the outer shell, and an air outlet connected to the upper end of the outer shell, a heat exchange bin is provided at the lower end of the inner wall of the outer shell, and a gravity heat pipe is installed on the inner wall of the heat exchange bin, one end of the gravity heat pipe is connected to the inlet, and the other end of the gravity heat pipe is connected to the outlet, the outlet and the inlet are protruding from the lower end of the rear side of the outer shell, an air guide port is connected to the center of the upper end of the heat exchange bin, and pull-out plugs are installed on both sides of the inner wall of the air guide port, an activated carbon filter block is installed on the upper end between the pull-out plugs, and a fine filter is fitted on the lower end of the activated carbon filter block. Block, and the lower end of the fine filter block is fitted with a coarse filter block, the upper end of the air guide port is communicated with and installed with an air guide plate, and the upper end of the air guide plate is communicated with and installed with a nozzle, a connecting spring is installed on the edge of the inner wall of the nozzle head, and a one-way valve is installed on the inner wall of the connecting spring, the one-way valve is installed with the inner wall of the nozzle head, the air guide plate is distributed parallel to the inner wall of the reaction pool, and the reaction pool is opened at the center of the inner wall of the shell, a spray trough is distributed on the upper end of the reaction pool, and the lower end of the spray trough is communicated with and installed with a dewatering pipe, the dewatering pipe is connected to the rear side of the shell body for installation, a leakage hole is provided on the upper end of the outer wall of the spray trough, a spray head is installed on the side surface of the upper end of the inner wall of the shell, and water inlet pipes are communicated and installed on both sides of the spray head, a mounting head is fitted on the outer wall of the water inlet pipe, and the mounting head is rotatably connected to the upper ends of both sides of the shell body.

[0006] Preferably, the spray heads are distributed in an inclined annular position on the upper end of the inner wall of the shell, and the spray heads are arc-shaped uniform through-hole structures.

[0007] Preferably, the water inlet pipe is symmetrically connected to both sides of the sprinkler head, and the water inlet pipe is rotatably connected to the outer shell through the mounting head, and a water pump is integrated on the water inlet pipe.

[0008] Preferably, the spray trough is a funnel structure, and the spray trough and the water outlet pipe are distributed in an L-shaped structure. The spray trough is connected to the reaction tank through a leak hole, and the reaction tank contains sodium hydroxide solution.

[0009] Preferably, the shape of the air guide plate matches the shape of the inner wall of the shell, and the air guide plate is connected to the nozzle, the nozzle is distributed in a matrix position on the air guide plate, and the one-way valve is elastically connected to the nozzle through a connecting spring.

[0010] Preferably, the gravity heat pipe is distributed in a spiral structure on the inner wall of the heat exchange chamber, and the activated carbon filter block, fine filter block and coarse filter block are distributed in a three-layer structure on the inner wall of the air guide port, and the activated carbon filter block, fine filter block and coarse filter block are connected to the air guide port in a positioned pull-out manner through a pull-out plug-in block.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: the waste gas recovery and treatment device for the hydrochloric acid synthesis furnace for sodium hydroxide production can recover the waste heat of the waste gas in the heat exchange bin through the gravity heat pipe, and can perform two groups of treatment through the reaction tank and the spray head, which has a better effect, and the sprayed wastewater can be independently discharged through the spray trough and the outlet water pipe to avoid flowing into the reaction tank to dilute the solution, and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a front view of a waste gas recovery and treatment device for a hydrochloric acid synthesis furnace used in sodium hydroxide production according to the utility model;

[0013] Figure 2 This is a schematic diagram of the internal structure of a waste gas recovery and treatment device for a hydrochloric acid synthesis furnace used in sodium hydroxide production in the utility model;

[0014] Figure 3 This utility model is a waste gas recovery and treatment device for hydrochloric acid synthesis furnace used in sodium hydroxide production Figure 2 Enlarged view of point A in the middle;

[0015] Figure 4 This utility model is a waste gas recovery and treatment device for hydrochloric acid synthesis furnace used in sodium hydroxide production Figure 2 Enlarged view of point B in the middle;

[0016] Figure 5 This utility model is a waste gas recovery and treatment device for hydrochloric acid synthesis furnace used in sodium hydroxide production Figure 2 Enlarged view of point C in the middle.

[0017] In the figure: 1. outer shell, 2. PLC controller, 3. air inlet, 4. air outlet, 5. spray head, 6. water inlet pipe, 7. spray trough, 8. water outlet pipe, 9. air guide plate, 10. inlet, 11. gravity heat pipe, 12. air guide port, 13. outlet, 14. reaction tank, 15. mounting head, 16. activated carbon filter block, 17. fine filter block, 18. coarse filter block, 19. pull-out plug, 20. one-way valve, 21. spray head, 22. connecting spring, 23. leak hole, 24. heat exchange chamber. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] See also Figure 1-5The utility model provides a technical solution: a waste gas recovery and treatment device for a hydrochloric acid synthesis furnace for sodium hydroxide production, comprising an outer shell 1, a PLC controller 2, an air inlet 3, an air outlet 4, a spray head 5, a water inlet pipe 6, a spray tank 7, a water outlet pipe 8, an air guide plate 9, an inlet 10, a gravity heat pipe 11, an air guide port 12, an outlet 13, a reaction tank 14, a mounting head 15, an activated carbon filter block 16, a fine filter block 17, a coarse filter block 18, a pull-out plug-in block 19, a one-way valve 20, an air jet head 21, a connecting spring 22, a leak hole 23 and a heat exchange chamber 24. The center position of the front side of the outer shell 1 is electrically connected to the PLC controller 2, and the lower end of one side of the outer shell 1 is connected to the air inlet 3. , and the upper end of the outer shell 1 is connected to and installed with an air outlet 4, a heat exchange bin 24 is opened at the lower end of the inner wall of the outer shell 1, and a gravity heat pipe 11 is installed on the inner wall of the heat exchange bin 24, and the gravity heat pipe 11 is distributed in a spiral structure on the inner wall of the heat exchange bin 24, and the activated carbon filter block 16, the fine filter block 17 and the coarse filter block 18 are distributed in a three-layer structure on the inner wall of the air guide port 12, and the activated carbon filter block 16, the fine filter block 17 and the coarse filter block 18 are positioned and pulled together with the air guide port 12 through a pull-out plug-in block 19, so that the gravity heat pipe 11 is convenient for waste heat recovery, and the exhaust gas can be filtered through the three layers of activated carbon filter block 16, fine filter block 17 and coarse filter block 18, and it can be quickly pulled and disassembled, and is easy to replace.

[0020] One end of the gravity heat pipe 11 is connected to the inlet 10, and the other end of the gravity heat pipe 11 is connected to the outlet 13. The outlet 13 and the inlet 10 are protruding at the lower end of the rear side of the outer shell 1. The center position of the upper end of the heat exchange chamber 24 is connected to the air guide port 12, and the two sides of the inner wall of the air guide port 12 are plugged with pull-out plugs 19. An activated carbon filter block 16 is installed at the upper end between the pull-out plugs 19, and the lower end of the activated carbon filter block 16 is fitted with a fine filter block 17, and the lower end of the fine filter block 17 is fitted with a fine filter block 17. A coarse filter block 18 is provided, and the upper end of the air guide port 12 is connected to an air guide plate 9, and the upper end of the air guide plate 9 is connected to a nozzle 21. The shape of the air guide plate 9 matches the shape of the inner wall of the outer shell 1, and the air guide plate 9 is connected to the nozzle 21. The nozzle 21 is distributed in a matrix position on the air guide plate 9. The one-way valve 20 is elastically and telescopically connected to the nozzle 21 through a connecting spring 22, so that the nozzle 21 can guide the air more evenly, and can effectively prevent backflow, and the reaction effect is good.

[0021] A connecting spring 22 is installed on the edge of the inner wall of the nozzle 21, and a one-way valve 20 is installed on the inner wall of the connecting spring 22. The one-way valve 20 is installed on the inner wall of the nozzle 21. The air guide plate 9 is distributed parallel to the inner wall of the reaction tank 14, and the reaction tank 14 is opened at the center of the inner wall of the outer shell 1. A spray trough 7 is distributed on the upper end of the reaction tank 14, and the lower end of the spray trough 7 is connected to the outlet water pipe 8. The spray trough 7 is a funnel structure, and the spray trough 7 and the outlet water pipe 8 are distributed in an L-shaped structure. The spray trough 7 is connected to the reaction tank 14 through a leak 23, and the reaction tank 14 contains sodium hydroxide solution. In this way, the spray trough 7 can independently discharge the spray wastewater to avoid dilution of the solution.

[0022] The outlet water pipe 8 is plugged into and connected to the rear side of the outer shell 1, a leakage hole 23 is opened at the upper end of the outer wall of the spray trough 7, a spray head 5 is installed on the side of the upper end of the inner wall of the outer shell 1, and water inlet pipes 6 are installed on both sides of the spray head 5. The spray head 5 is distributed in an inclined annular position on the upper end of the inner wall of the outer shell 1, and the spray head 5 has an arc-shaped uniform through-hole structure, which makes it convenient for the spray head 5 to spray more efficiently and achieve a good treatment effect.

[0023] The water inlet pipe 6 is symmetrically connected to both sides of the sprinkler head 5, and is rotatably connected to the outer shell 1 through the mounting head 15. A water pump is integrated on the water inlet pipe 6, which makes it convenient to rotate and adjust the water inlet pipe 6 and has good adaptability. The outer wall of the water inlet pipe 6 is fitted with a mounting head 15, and the mounting head 15 is rotatably connected to the upper ends of both sides of the outer shell 1.

[0024] Working principle: When using the waste gas recovery and treatment device for the hydrochloric acid synthesis furnace for sodium hydroxide production, first connect the device to the power supply, then connect the air guide pipe to the air inlet 3, then introduce the waste gas into the heat exchange bin 24, and then recover the waste heat through the gravity heat pipe 11, then the waste gas is filtered through the activated carbon filter block 16, the fine filter block 17 and the coarse filter block 18 in three layers, and then introduced into the nozzle 21 through the air guide plate 9, and then the one-way valve 20 is elastically pushed open by the connecting spring 22, so that the waste gas is introduced into the reaction tank 14 for reaction, and the gas after the reaction is completed will be introduced into the spray tank 7 through the leak hole 23, and then water is introduced into the spray head 5 through the water inlet pipe 6 for annular spraying, and the waste water is independently discharged through the outlet water pipe 8. After long-term use, the activated carbon filter block 16, the fine filter block 17 and the coarse filter block 18 can be pulled out, disassembled and replaced by the pull-out plug block 19. This is the use process of the waste gas recovery and treatment device for the hydrochloric acid synthesis furnace for sodium hydroxide production.

[0025] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A waste gas recovery and treatment device for a hydrochloric acid synthesis furnace for sodium hydroxide production, comprising an outer shell (1), wherein a PLC controller (2) is electrically connected to the center position of the front side of the outer shell (1), an air inlet (3) is connected to the lower end of one side of the outer shell (1), and an air outlet (4) is connected to the upper end of the outer shell (1), and the device is characterized in that: A heat exchange chamber (24) is provided at the lower end of the inner wall of the outer shell (1), and a gravity heat pipe (11) is installed on the inner wall of the heat exchange chamber (24). One end of the gravity heat pipe (11) is connected to an inlet (10), and the other end of the gravity heat pipe (11) is connected to an outlet (13). The outlet (13) and the inlet (10) are protrudingly distributed at the lower end of the rear side of the outer shell (1). The center position of the upper end of the heat exchange chamber (24) is connected to an air guide port (12). ), and the inner walls of the air guide port (12) are plugged with pull-out plug blocks (19) on both sides, and an activated carbon filter block (16) is installed at the upper end between the pull-out plug blocks (19), and the lower end of the activated carbon filter block (16) is fitted with a fine filter block (17), and the lower end of the fine filter block (17) is fitted with a coarse filter block (18), the upper end of the air guide port (12) is connected to an air guide plate (9), and the upper end of the air guide plate (9) is connected to an air jet head (21), A connecting spring (22) is installed on the inner wall edge of the nozzle head (21), and a one-way valve (20) is installed on the inner wall of the connecting spring (22). The one-way valve (20) is installed on the inner wall of the nozzle head (21). The air guide plate (9) is parallel to the inner wall of the reaction pool (14), and the reaction pool (14) is opened at the center of the inner wall of the outer shell (1). A spray groove (7) is distributed on the upper end of the reaction pool (14), and the lower end of the spray groove (7) is connected to the inner wall of the nozzle head (21). A water outlet pipe (8) is installed, and the water outlet pipe (8) is connected and installed with the rear side of the outer shell (1). A leakage hole (23) is opened at the upper end of the outer wall of the spray trough (7). A spray head (5) is installed on the side of the upper end of the inner wall of the outer shell (1), and water inlet pipes (6) are installed on both sides of the spray head (5). The outer wall of the water inlet pipe (6) is sleeved and installed with a mounting head (15), and the mounting head (15) is rotatably connected to the upper ends of both sides of the outer shell (1).

2. A hydrochloric acid synthesis furnace waste gas recovery and treatment device for sodium hydroxide production according to claim 1, characterized in that: The spray heads (5) are distributed in an inclined annular position on the upper end of the inner wall of the outer shell (1), and the spray heads (5) are arc-shaped uniform through-hole structures.

3. A hydrochloric acid synthesis furnace waste gas recovery and treatment device for sodium hydroxide production according to claim 2, characterized in that: The water inlet pipe (6) is symmetrically connected to both sides of the sprinkler head (5), and the water inlet pipe (6) is rotatably connected to the outer shell (1) through the mounting head (15). A water pump is integrated on the water inlet pipe (6).

4. A hydrochloric acid synthesis furnace waste gas recovery and treatment device for sodium hydroxide production according to claim 3, characterized in that: The spray trough (7) is a funnel structure, and the spray trough (7) and the water outlet pipe (8) are distributed in an L-shaped structure. The spray trough (7) is connected to the reaction pool (14) through a leak hole (23), and the reaction pool (14) contains a sodium hydroxide solution.

5. A hydrochloric acid synthesis furnace waste gas recovery and treatment device for sodium hydroxide production according to claim 4, characterized in that: The shape of the air guide plate (9) matches the shape of the inner wall of the outer shell (1), and the air guide plate (9) is connected to the nozzle (21). The nozzle (21) is distributed in a matrix position on the air guide plate (9), and the one-way valve (20) is elastically and telescopically connected to the nozzle (21) via a connecting spring (22).

6. A waste gas recovery and treatment device for a hydrochloric acid synthesis furnace for sodium hydroxide production according to claim 5, characterized in that: The gravity heat pipe (11) is distributed in a spiral structure on the inner wall of the heat exchange chamber (24), and the activated carbon filter block (16), the fine filter block (17) and the coarse filter block (18) are distributed in a three-layer structure on the inner wall of the air guide port (12). The activated carbon filter block (16), the fine filter block (17) and the coarse filter block (18) are connected to the air guide port (12) in a positioning and pulling manner through a pulling plug block (19).

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