Tail gas purification device for chemical boiler

Abstract

The utility model discloses a chemical boiler tail gas purification device, which relates to the technical field of tail gas treatment and comprises a purification tank, the middle of the lower end of the purification tank is communicated with a gas delivery pipe, and the upper end of the gas delivery pipe penetrates through a round hole formed in the corresponding position of the bottom of the purification tank, extends into the purification tank and is communicated with a disc. The upper side surface of the disc is evenly communicated with nozzles, the right portion of the lower side of the purification tank is communicated with the lower end of a first liquid conveying pipe, the upper end of the first liquid conveying pipe is communicated with a liquid inlet of a pump body, a liquid outlet of the pump body is communicated with the lower end of a second liquid conveying pipe, and the upper end of the second liquid conveying pipe is communicated with the upper end of a third liquid conveying pipe. And the lower end of the third liquid pipe penetrates through a circular groove formed in the purification tank, extends into the purification tank and is communicated with a rotary spray head, reaction chemicals are fully used, dual purification treatment is conducted on boiler tail gas, and the treatment efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tail gas treatment, in particular to a tail gas purification device for a chemical boiler. Background Technique

[0002] Chemical tail gas refers to the toxic and harmful gases discharged from chemical factories during chemical production. Chemical tail gas often contains many types of pollutants, with complex physical and chemical properties and different toxicities, seriously polluting the environment and affecting human health. The components of chemical tail gas generated by different chemical production industries vary greatly. For example, the waste gas generated by the chlor-alkali industry mainly contains chlorine, hydrogen chloride, vinyl chloride, mercury, acetylene, etc., and the waste gas generated by the nitrogen fertilizer industry mainly contains nitrogen oxides, urea dust, carbon monoxide, ammonia, sulfur dioxide, methane, etc., as well as automobile exhaust. The chemical tail gas generated by factories cannot be directly discharged into the air and needs to be purified.

[0003] Existing purification technologies often use the spraying method for purification work. While neutralizing the tail gas, this method can adsorb fine particulate dust in the tail gas through the medicine mist. Existing spraying technologies often use the top-down spraying method, with a relatively fast falling speed, and the medicine is often discharged before reaching the saturation state, which is rather wasteful. Therefore, we propose a tail gas purification device for a chemical boiler. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is to overcome the existing defects, provide a tail gas purification device for a chemical boiler, make full use of the reaction medicine, perform double purification treatment on the boiler tail gas, and improve the treatment efficiency, which can effectively solve the problems in the background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A tail gas purification device for a chemical boiler, including a purification tank. The middle part of the lower end of the purification tank is connected to an air delivery pipe. The upper end of the air delivery pipe passes through a circular hole opened at the corresponding position at the bottom of the purification tank and extends into the interior of the purification tank, and is connected to a disc. The upper side surface of the disc is evenly connected to nozzles. The right part of the lower side of the purification tank is connected to the lower end of a first liquid delivery pipe. The upper end of the first liquid delivery pipe is connected to the liquid inlet of a pump body. The liquid outlet of the pump body is connected to the lower end of a second liquid delivery pipe. The upper end of the second liquid delivery pipe is connected to the upper end of a third liquid delivery pipe. The lower end of the third liquid pipe passes through a circular groove opened on the purification tank and extends into the interior of the purification tank, and is connected to a rotary nozzle. The side surface of the rotary nozzle is equally angled and connected to spray pipes. The lower side surfaces of each spray pipe are respectively equidistantly connected to nozzles.

[0006] Design a purification tank so that the reaction agent is stored at the bottom of the purification tank, so that the reaction agent submerges the nozzle, so that after the tail gas is ejected by the nozzle, it directly undergoes the first purification reaction with the agent at the bottom of the purification tank. Then, the tail gas bubbles float upward and move to the upper end of the purification tank. At this time, the pump body is controlled to work through the external control switch group, so that the agent at the bottom of the purification tank is pumped into the first infusion pipe, and then transported to the second infusion pipe, and then transported to the third liquid pipe, and then atomized and ejected through the nozzles on the spray pipe to spray the upward-moving tail gas, so as to carry out the secondary purification work.

[0007] Further, the purification device further includes a motor. The middle part of the upper side surface of the third liquid pipe is fixedly connected with the motor. The input end of the motor is electrically connected to the output end of the external power supply through the external control switch. The output shaft of the motor extends into the interior of the third liquid pipe and is fixedly connected to the upper end of the rotating rod. The upper part of the rotating rod is fixedly connected with the middle part of the inner side surface of the rotating nozzle.

[0008] Design a rotatable rotating nozzle so that the spray pipe can rotate during spraying, so that the spraying effect is more uniform. When controlling the rotation of the rotating nozzle, the motor is controlled to work through the external control switch group, so as to drive the rotating rod to rotate, so as to drive the rotating nozzle to work.

[0009] Further, the purification device further includes stirring blades. The lower end of the rotating rod passes through the circular hole opened on the rotating nozzle and extends to the lower part of the rotating nozzle, and the stirring blades are fixedly connected at equal angles.

[0010] Design the stirring blades to stir the bubbles, so as to break up the bubbles, so that the first purification work is carried out more evenly. When the rotating rod rotates, it drives the stirring blades to rotate.

[0011] Further, the purification device further includes a drain pipe and a liquid level pipe. The left part of the lower side surface of the purification tank is fixedly connected with the upper end of the drain pipe. The upper end of the drain pipe passes through the circular hole opened at the corresponding position on the purification tank and extends into the interior of the purification tank, and is connected to the lower end of the liquid level pipe. The upper end of the purification tank is connected to the lower end of the liquid level pipe, and the upper end of the liquid level pipe is higher than the nozzle.

[0012] The liquid level pipe is used to control the liquid level of the agent inside the purification tank to always remain at a unified height.

[0013] Further, the purification device further includes a replenishing pipe and an exhaust pipe. The lower end of the purification tank is connected to the replenishing pipe, and the left part of the upper end of the purification tank is connected to the exhaust pipe.

[0014] Design the replenishing pipe to add and discharge the agent through the replenishing pipe, and design the exhaust pipe to discharge the purified tail gas.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows: This chemical boiler tail gas purification device has the following advantages:

[0016] 1. Adopt multiple purification settings to make full use of the reaction reagent, improve the purification work efficiency while avoiding waste;

[0017] 2. Design a rotatable rotating nozzle, so that the spray pipe can rotate during spraying, making the spraying effect more uniform;

[0018] 3. Design stirring blades to stir the bubbles, break up the bubbles, and make the first purification work more uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the present utility model;

[0020] Figure 2 is a schematic bottom view structural diagram of the present utility model;

[0021] Figure 3 is a schematic internal structural diagram of the third liquid pipe of the present utility model;

[0022] Figure 4 is a schematic internal structural diagram of the purification tank of the present utility model;

[0023] Figure 5 is a schematic top view internal structural diagram of the purification tank of the present utility model.

[0024] In the figure: 1 purification tank, 2 drain pipe, 3 first infusion pipe, 4 pump body, 5 second infusion pipe, 6 motor, 7 third infusion pipe, 8 rotating nozzle, 9 spray pipe, 10 rotating rod, 11 stirring blade, 12 gas transmission pipe, 13 disc, 14 nozzle, 15 liquid level pipe, 16 liquid supplement pipe, 17 exhaust pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0026] Please refer to Figures 1-5, this embodiment provides a technical solution: a chemical boiler tail gas purification device, including a purification tank 1. The middle part of the lower end of the purification tank 1 is connected to an air delivery pipe 12. The upper end of the air delivery pipe 12 passes through a circular hole opened at the corresponding position at the bottom of the purification tank 1 and extends into the interior of the purification tank 1, and is connected to a disc 13. The upper side surface of the disc 13 is evenly connected to nozzles 14. The right part of the lower side of the purification tank 1 is connected to the lower end of a first liquid delivery pipe 3. The upper end of the first liquid delivery pipe 3 is connected to the liquid inlet of a pump body 4. The liquid outlet of the pump body 4 is connected to the lower end of a second liquid delivery pipe 5. The upper end of the second liquid delivery pipe 5 is connected to the upper end of a third liquid delivery pipe 7. The lower end of the third liquid delivery pipe 7 passes through a circular groove opened on the purification tank 1 and extends into the interior of the purification tank 1, and is connected to a rotary spray head 8. The side surface of the rotary spray head 8 is equally angled and connected to spray pipes 9. The lower side surfaces of each spray pipe 9 are respectively equally spaced and connected to spray nozzles.

[0027] The purification tank 1 is designed so that the reaction reagent is stored at the bottom of the purification tank 1, so that the reaction reagent submerges the nozzles 14, so that after the tail gas is ejected by the nozzles 14, it directly undergoes a first purification reaction with the reagent at the bottom of the purification tank 1. Then the tail gas bubbles float up and move to the upper end of the purification tank 1. At this time, the pump body 4 is controlled to work through an external control switch group, so that the reagent at the bottom of the purification tank 1 is pumped into the first liquid delivery pipe 3, then conveyed to the second liquid delivery pipe 5, and then conveyed to the third liquid delivery pipe 7, and then atomized and ejected through the spray nozzles on the spray pipes 9 to spray the upward moving tail gas, so as to carry out secondary purification work.

[0028] The purification device further includes a motor 6. The middle part of the upper side surface of the third liquid delivery pipe 7 is fixedly connected to the motor 6. The input end of the motor 6 is electrically connected to the output end of an external power supply through an external control switch. The output shaft of the motor 6 extends into the interior of the third liquid delivery pipe 7 and is fixedly connected to the upper end of a rotating rod 10. The upper part of the rotating rod 10 is fixedly connected to the middle part of the inner side surface of the rotary spray head 8.

[0029] The rotatable rotary spray head 8 is designed so that the spray pipes 9 can rotate during spraying, so that the spraying effect is more uniform. When controlling the rotation of the rotary spray head 8, the motor 6 is controlled to work through an external control switch group, so as to drive the rotating rod 10 to rotate, and then drive the rotary spray head 8 to work.

[0030] The purification device further includes stirring blades 11. The lower end of the rotating rod 10 passes through a circular hole opened on the rotary spray head 8 and extends to the lower part of the rotary spray head 8, and is equally angled and fixedly connected to the stirring blades 11.

[0031] The stirring blades 11 are designed to stir the bubbles, so as to break up the bubbles, so that the first purification work is carried out more evenly. When the rotating rod 10 rotates, it drives the stirring blades 11 to rotate.

[0032] The purification device further includes a drain pipe 2 and a liquid level pipe 15. The left part of the lower side surface of the purification tank 1 is fixedly connected to the upper end of the drain pipe 2. The upper end of the drain pipe 2 passes through a circular hole opened at the corresponding position on the purification tank 1 and extends into the interior of the purification tank 1, and is connected to the lower end of the liquid level pipe 15. The upper end of the purification tank 1 is connected to the lower end of the liquid level pipe 15, and the upper end of the liquid level pipe 15 is higher than the nozzle 14.

[0033] The liquid level pipe 15 is used to control the chemical liquid level inside the purification tank 1 to always maintain a unified height.

[0034] The purification device further includes a liquid replenishing pipe 16 and an exhaust pipe 17. The lower end of the purification tank 1 is connected to the liquid replenishing pipe 16, and the left part of the upper end of the purification tank 1 is connected to the exhaust pipe 17.

[0035] The liquid replenishing pipe 16 is designed to add and discharge chemicals through the liquid replenishing pipe 16, and the exhaust pipe 17 is designed to discharge the purified tail gas.

[0036] The working principle of a chemical boiler tail gas purification device provided by the present utility model is as follows:

[0037] First, the chemical is transported into the purification tank 1 through the liquid replenishing pipe 16, and then the waste gas is transported into the air inlet pipe 12. After being sprayed out through the nozzle 14, it directly undergoes a first purification reaction with the chemical at the bottom of the purification tank 1. Then, the tail gas bubbles float upward and move to the upper end of the purification tank 1. At this time, the pump body 4 is controlled to work through an external control switch group, so as to pump the chemical at the bottom of the purification tank 1 into the first infusion pipe 3, and then transport it to the second infusion pipe 5, and then transport it to the third liquid pipe 7, and then atomize and spray it through the nozzles on the spray pipe 9 to spray the upward-moving tail gas, so as to perform secondary purification work. After the chemical is used twice, it is discharged through the liquid replenishing pipe 16 and then replenished. The motor 6 is controlled to work through an external control switch group, so as to drive the rotating rod 10 to rotate, and then drive the rotating spray head 8 and the stirring blades 11 to rotate.

[0038] It should be noted that in the above embodiments, the pump body 4 disclosed is a water pump of Shanghai Sunshine Pump Industry, and the method of controlling the pump body 4 and the motor 6 to work through an external control switch group adopts a method commonly used in the prior art.

[0039] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present utility model.

Claims

1. A chemical boiler tail gas purification device, characterized in that: It includes a purification tank (1). The middle part of the lower end of the purification tank (1) is connected to an air delivery pipe (12). The upper end of the air delivery pipe (12) passes through a circular hole opened at the corresponding position at the bottom of the purification tank (1) and extends into the interior of the purification tank (1), and is connected to a disc (13). The upper side surface of the disc (13) is evenly connected to nozzles (14). The right part of the lower side of the purification tank (1) is connected to the lower end of a first infusion pipe (3). The upper end of the first infusion pipe (3) is connected to the liquid inlet of a pump body (4). The liquid outlet of the pump body (4) is connected to the lower end of a second infusion pipe (5). The upper end of the second infusion pipe (5) is connected to the upper end of a third infusion pipe (7). The lower end of the third infusion pipe (7) passes through a circular groove opened on the purification tank (1) and extends into the interior of the purification tank (1), and is connected to a rotary spray head (8). The side surface of the rotary spray head (8) is connected to spray pipes (9) at equal angles. The lower side surfaces of each spray pipe (9) are respectively connected to spray heads at equal distances.

2. The chemical boiler tail gas purification device according to claim 1, characterized in that: The purification device further includes a motor (6). The middle part of the upper side surface of the third infusion pipe (7) is fixedly connected to the motor (6). The input end of the motor (6) is electrically connected to the output end of an external power supply through an external control switch. The output shaft of the motor (6) extends into the interior of the third infusion pipe (7), and is fixedly connected to the upper end of a rotating rod (10). The upper part of the rotating rod (10) is fixedly connected to the middle part of the inner side surface of the rotary spray head (8).

3. The chemical boiler tail gas purification device according to claim 1, characterized in that: The purification device further includes stirring blades (11). The lower end of the rotating rod (10) passes through a circular hole opened on the rotary spray head (8) and extends to the lower part of the rotary spray head (8), and is fixedly connected to the stirring blades (11) at equal angles.

4. A chemical boiler tail gas purification device according to claim 1, characterized in that: The purification device further includes a drain pipe (2) and a liquid level pipe (15). The left part of the lower side surface of the purification tank (1) is fixedly connected to the upper end of the drain pipe (2). The upper end of the drain pipe (2) passes through a circular hole opened at the corresponding position on the purification tank (1) and extends into the interior of the purification tank (1), and is connected to the lower end of the liquid level pipe (15). The upper end of the purification tank (1) is connected to the lower end of the liquid level pipe (15). The upper end of the liquid level pipe (15) is higher than the nozzles (14).

5. A chemical boiler tail gas purification device according to claim 1, characterized in that: The purification device further includes a liquid supplement pipe (16) and an exhaust pipe (17). The lower end of the purification tank (1) is connected to the liquid supplement pipe (16). The left part of the upper end of the purification tank (1) is connected to the exhaust pipe (17).

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