Solid waste incineration flue gas treatment device

Abstract

The utility model discloses a solid waste incineration flue gas treatment device which comprises a purification cylinder, the bottom of the purification cylinder is communicated with a liquid storage shell, the top of the liquid storage shell is provided with an arc-shaped hollow pipe, the left side of the top of the arc-shaped hollow pipe is communicated with a breather pipe, the inner ring of the arc-shaped hollow pipe is communicated with an inclined pipe, and the inclined pipe is communicated with a gas inlet pipe. And the center of the bottom of an inner cavity of the liquid storage shell communicates with a blow-down valve, and a circulating type spraying mechanism is installed in the inner cavity of the liquid storage shell in a penetrating mode. The arc-shaped hollow pipe, the liquid storage shell, the circulating spraying mechanism and the inclined pipe are matched for use, so that the flue gas purification device has the advantages of dual treatment and circulating spraying, part of flue gas can be directly contacted with a solution in the liquid storage shell for reaction purification, part of flue gas naturally surges upwards, the sprayed solution is subjected to spraying reaction purification, and the flue gas purification effect is improved. According to the device, the flue gas is subjected to split-flow treatment, and the sprayed solution finally falls down and is concentrated in the liquid storage shell, so that the subsequent flue gas is purified, and the aim of circular treatment is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of solid waste treatment, and particularly relates to a device for treating solid waste incineration flue gas. Background Art

[0002] Incineration is a commonly used method for solid waste treatment. When solid waste treatment plants incinerate solid waste (such as industrial solid waste such as packaging bags, plastics or chemical solid waste), a large amount of flue gas will be generated. The flue gas temperature is high, and on the one hand, it needs to be cooled, and on the other hand, the pH needs to be adjusted. Most of these flue gases are acidic, so they are neutralized by spraying lime water, that is, calcium hydroxide solution.

[0003] The basic flue gas treatment device only uses spraying to cool and precipitate the flue gas. When the flue gas intake is large or the exhaust gas content in the flue gas is high, the sprayed calcium hydroxide solution cannot contact and react with the flue gas evenly, and the residual solution cannot be circulated and extracted for treatment. There are certain limitations. In order to solve the above technical problems, we have designed a solid waste incineration flue gas treatment device. Utility Model Content

[0004] The utility model aims to solve the problems that the basic flue gas treatment device in the prior art only uses a spraying method to cool and precipitate the flue gas. When the flue gas intake is large or the waste gas content in the flue gas is high, the sprayed calcium hydroxide solution cannot uniformly contact and react with the flue gas, and the residual solution cannot be circulated and extracted for treatment.

[0005] The technical purpose of this utility model is achieved through the following technical solutions:

[0006] A device for treating flue gas from solid waste incineration comprises a purification cylinder, the bottom of which is connected to a liquid storage shell, the top of which is equipped with an arc-shaped hollow tube, the left side of the top of the arc-shaped hollow tube is connected to a vent pipe, the inner circle of the arc-shaped hollow tube is connected to an inclined tube, the center of the bottom of the inner cavity of the liquid storage shell is connected to a drain valve, and a circulating spray mechanism is installed through the inner cavity of the liquid storage shell.

[0007] Preferably, the circulating spray mechanism includes a mounting frame and a filter net bucket, the mounting frame is located on the right side of the purification cylinder, the connection between the mounting frame and the purification cylinder, and the connection between the mounting frame and the liquid storage shell are fixedly connected, and the filter net bucket is located in the inner cavity of the liquid storage shell and is fixedly connected to the inner wall of the liquid storage shell.

[0008] Preferably, a vertical infusion pump is installed on the top bolt of the mounting frame, the liquid outlet end of the vertical infusion pump is located in the inner cavity of the purification cartridge and is connected to a hollow frame, and the bottom of the hollow frame is connected to a spray head.

[0009] Preferably, the liquid inlet end of the vertical infusion pump is connected to a transmission tube, and one end of the transmission tube away from the vertical infusion pump penetrates into the inner cavity of the liquid storage shell and is connected to a transverse tube.

[0010] Preferably, the surface of the transverse tube is fixedly connected to the connection point of the filter net bucket, and an intercepting annular sleeve is provided on the left and right sides of the surface of the transverse tube and located on the outer side of the filter net bucket.

[0011] Preferably, there are several inclined tubes, which are evenly distributed on the surface of the arc-shaped hollow tube, and one end of the inclined tube away from the arc-shaped hollow tube penetrates into the inner cavity of the liquid storage shell.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The utility model cooperates with an arc-shaped hollow tube, a liquid storage shell, a circulating spray mechanism and an inclined tube to have the advantages of double treatment and circulating spraying. The arc-shaped hollow tube and the inclined tube can be used to divert the smoke and transmit it to the liquid storage shell. Part of the smoke directly contacts with the solution in the liquid storage shell for reaction purification, and part of the smoke naturally surges upward to be sprayed with the solution sprayed by the spray head when the vertical infusion pump is working for spray reaction purification. The device diverts the smoke, which is more in line with actual use needs, and the sprayed solution will eventually fall and be concentrated in the liquid storage shell for subsequent smoke purification, thereby achieving the purpose of circulating treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a bottom-up stereogram of the structure of the utility model;

[0016] Figure 3 It is a sectional stereoscopic diagram of the structure of the utility model;

[0017] Figure 4 It is a three-dimensional schematic diagram of the local structure of the utility model.

[0018] In the above drawings: 1. purification cylinder; 2. ventilation pipe; 3. arc-shaped hollow tube; 4. liquid storage shell; 5. circulating spray mechanism; 501. filter net bucket; 502. horizontal pipe; 503. intercepting ring sleeve; 504. transmission pipe; 505. mounting frame; 506. vertical infusion pump; 507. hollow frame; 508. spray head; 6. drain valve; 7. inclined pipe. DETAILED DESCRIPTION

[0019] 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.

[0020] As a preferred embodiment of the present invention, Figure 1-Figure 4 As shown, this embodiment provides a device for treating flue gas from solid waste incineration, including a purification cylinder 1, the bottom of which is connected to a liquid storage shell 4, the top of which is equipped with an arc-shaped hollow tube 3, the left side of the top of the arc-shaped hollow tube 3 is connected to a ventilation pipe 2, the inner circle of the arc-shaped hollow tube 3 is connected to an inclined tube 7, the center of the bottom of the inner cavity of the liquid storage shell 4 is connected to a drain valve 6, and a circulating spray mechanism 5 is installed through the inner cavity of the liquid storage shell 4.

[0021] See also Figure 3 and Figure 4 The circulating spray mechanism 5 includes a mounting frame 505 and a filter net bucket 501. The mounting frame 505 is located on the right side of the purification cylinder 1. The connection between the mounting frame 505 and the purification cylinder 1 and the connection between the mounting frame 505 and the liquid storage shell 4 are fixedly connected. The filter net bucket 501 is located in the inner cavity of the liquid storage shell 4 and is fixedly connected to the inner wall of the liquid storage shell 4.

[0022] See also Figure 3 and Figure 4 A vertical infusion pump 506 is installed on the top bolt of the mounting frame 505. The liquid outlet end of the vertical infusion pump 506 is located in the inner cavity of the purification cylinder 1 and is connected to a hollow frame 507. The bottom of the hollow frame 507 is connected to a spray head 508.

[0023] See also Figure 3 and Figure 4 The liquid inlet end of the vertical infusion pump 506 is connected to the transmission tube 504 , and one end of the transmission tube 504 away from the vertical infusion pump 506 penetrates into the inner cavity of the liquid storage shell 4 and is connected to the horizontal tube 502 .

[0024] See also Figure 3 and Figure 4 The surface of the horizontal tube 502 is fixedly connected to the connection of the filter net bucket 501 , and an intercepting annular sleeve 503 is provided on the left and right sides of the surface of the horizontal tube 502 and located on the outer side of the filter net bucket 501 .

[0025] When the above embodiment is implemented, a proper amount of calcium hydroxide solution is preset in the liquid storage shell 4, wherein the liquid level of the calcium hydroxide solution should be located in the inclined tube 7, but not completely covering the inclined tube 7. First, the smoke is introduced through the ventilation pipe 2, and with the cooperation of the arc-shaped hollow tube 3 and the inclined tube 7, the smoke is diverted and evenly enters the liquid storage shell 4. Since the inclined tube 7 is inclined, the smoke has a downward impulse, and the smoke transmitted by the inclined tube 7 is further divided, wherein part of the smoke is directly introduced into the calcium hydroxide solution and directly purified by the reaction of the calcium hydroxide solution, while part of the smoke continues to be transmitted upward, and the vertical infusion pump 506 is synchronously controlled to work, so that The calcium hydroxide solution in the liquid storage shell 4 is filtered by the intercepting annular sleeve 503, and then transmitted through the transverse pipe 502 and the transmission pipe 504. Finally, the solution is evenly sprayed in the purification cylinder 1 by the hollow frame 507 and the spray head 508, and contacts with the upward part of the flue gas to achieve a good and uniform purification effect. The sprayed solution carries the solid calcium carbonate produced by the reaction and falls into the liquid storage shell 4. The solid impurities are filtered and intercepted by the transmission pipe 504 to avoid impurities entering the transverse pipe 502, the transmission pipe 504 or the vertical infusion pump 506 to cause blockage. After the treatment is completed, it is only necessary to open the drain valve 6 to discharge the waste solution and solid calcium carbonate.

[0026] In some embodiments, Figure 4 As shown, there are several inclined tubes 7 , which are evenly distributed on the surface of the arc-shaped hollow tube 3 , and one end of the inclined tube 7 away from the arc-shaped hollow tube 3 penetrates into the inner cavity of the liquid storage shell 4 .

[0027] In order to divert the smoke into the pipe and ensure the uniformity of smoke treatment, the embodiment designs a plurality of inclined pipes 7 which are evenly distributed on the arc-shaped hollow pipe 3 and communicate with the arc-shaped hollow pipe 3 .

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A device for treating flue gas from solid waste incineration, comprising a purification cylinder (1), characterized in that: The bottom of the purification cylinder (1) is connected to a liquid storage shell (4), the top of the liquid storage shell (4) is equipped with an arc-shaped hollow tube (3), the left side of the top of the arc-shaped hollow tube (3) is connected to a vent pipe (2), the inner circle of the arc-shaped hollow tube (3) is connected to an inclined tube (7), the center of the bottom of the inner cavity of the liquid storage shell (4) is connected to a drain valve (6), and a circulating spray mechanism (5) is installed through the inner cavity of the liquid storage shell (4).

2. The solid waste incineration flue gas treatment device according to claim 1, characterized in that: The circulating spray mechanism (5) comprises a mounting frame (505) and a filter net bucket (501); the mounting frame (505) is located on the right side of the purification cylinder (1); the connection between the mounting frame (505) and the purification cylinder (1) and the connection between the mounting frame (505) and the liquid storage shell (4) are both fixedly connected; the filter net bucket (501) is located in the inner cavity of the liquid storage shell (4) and is fixedly connected to the inner wall of the liquid storage shell (4).

3. The solid waste incineration flue gas treatment device according to claim 2, characterized in that: A vertical infusion pump (506) is installed on the top bolts of the mounting frame (505); the liquid outlet end of the vertical infusion pump (506) is located in the inner cavity of the purification cartridge (1) and is connected to a hollow frame (507); and the bottom of the hollow frame (507) is connected to a spray head (508).

4. The solid waste incineration flue gas treatment device according to claim 3, characterized in that: The liquid inlet end of the vertical infusion pump (506) is connected to a transmission tube (504), and one end of the transmission tube (504) away from the vertical infusion pump (506) passes through the inner cavity of the liquid storage shell (4) and is connected to a horizontal tube (502).

5. The solid waste incineration flue gas treatment device according to claim 4, characterized in that: The surface of the transverse tube (502) is fixedly connected to the connection point of the filter net bucket (501), and an intercepting annular sleeve (503) is provided on the left and right sides of the surface of the transverse tube (502) and located outside the filter net bucket (501).

6. The solid waste incineration flue gas treatment device according to claim 1, characterized in that: The number of the inclined tubes (7) is several and they are evenly distributed on the surface of the arc-shaped hollow tube (3); one end of the inclined tube (7) away from the arc-shaped hollow tube (3) penetrates into the inner cavity of the liquid storage shell (4).

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