CN216572199U - Multi-head spray tower for flue gas purification - Google Patents

Abstract

The utility model relates to the field of flue gas treatment equipment, in particular to a multi-head spray tower for flue gas purification, which comprises a tower body, wherein a gas gathering cavity, a primary spraying cavity and a secondary spraying cavity are sequentially arranged in the tower body from bottom to top, and the upper end of the secondary spraying cavity is a purified gas outlet; the inner wall of the gas-collecting cavity is communicated with a flue gas inlet, the central part of the upper wall of the gas-collecting cavity is raised upwards, and a gas-collecting hole communicated with the primary spraying cavity is formed. The utility model is provided with a three-layer cavity structure, smoke sequentially passes through the three cavities from bottom to top and is sprayed for two times, so that the smoke can be fully purified; the gas gathering cavity at the lowest layer is of an upward protruding structure so as to guide the flue gas to flow and gather to the center of the top, and the flue gas enters the primary spraying cavity in a gathering state through the gas gathering hole, the first spray header is arranged above the primary spraying cavity so as to directly spray the gathered flue gas, and a good purification effect can be achieved only by fewer spray headers and a smaller spray range.

Description

Multi-head spray tower for flue gas purification

Technical Field

The utility model relates to the field of flue gas treatment equipment, in particular to a multi-head spray tower for flue gas purification.

Background

Spray towers are widely used in flue gas purification and are divided into circulating water spray towers, alkali liquor spray towers and acid liquor spray towers according to the working principle; the atomizing medium is sprayed out by the spraying device, so that impurities in the flue gas are wrapped and precipitated, and the purifying effect is achieved.

However, flue gas as gas flows arbitrarily in the spray tower, and is easily diffused to dead corners, and the number and the spray range of the spray heads are limited, so that the flue gas is not easily sufficiently purified.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention provides a multi-head spray tower for flue gas purification, which is mainly used to guide the flow path of flue gas while simplifying the structure, so as to ensure the purification effect.

In order to solve the technical problems, the technical scheme of the utility model is as follows:

a multi-head spray tower for purifying flue gas comprises a tower body, wherein a gas gathering cavity, a primary spraying cavity and a secondary spraying cavity are sequentially arranged in the tower body from bottom to top, and a purified gas outlet is formed in the upper end of the secondary spraying cavity; the inner wall of the gas gathering cavity is communicated with a flue gas inlet, the central part of the upper wall of the gas gathering cavity is raised upwards, and a gas gathering hole communicated with the primary spraying cavity is formed; the central part of the lower wall of the secondary spraying cavity is downwards sunken, and the middle part of the upper wall of the primary spraying cavity is provided with a first spray header communicated with the secondary spraying cavity; the upper wall of the primary sprinkling cavity inclines upwards along the circumferential side, and is provided with a through hole communicated with the secondary sprinkling cavity, and a second sprinkling head is arranged in the secondary sprinkling cavity.

Compared with the prior art, the utility model has the advantages that:

the three-layer cavity structure is arranged, smoke sequentially passes through the three cavities from bottom to top and is sprayed twice, and the smoke can be fully purified;

the gas gathering cavity at the lowest layer is of an upward bulge structure so as to guide the smoke to flow and gather to the center of the top part, and the smoke enters the primary spraying cavity in a gathering state through the gas gathering hole, and the first spraying head is arranged above the primary spraying cavity so as to directly spray the gathered smoke, so that a good purification effect can be achieved only by fewer spraying heads and a smaller spraying range;

the flue gas after primary spraying continuously rises and enters the secondary spraying cavity from the periphery of the upper wall of the primary spraying cavity, the flue gas is sprayed and purified by the second spraying head in the secondary spraying cavity again, the flue gas is guided to flow upwards in order and in a track through the three cavities, and the structure in the spraying tower is greatly simplified on the premise of ensuring the purifying effect, so that the cost is saved;

and the middle part of the lower wall of the secondary spraying cavity is sunken downwards, and the spraying liquid sprayed by the second spraying head is accumulated at the bottom of the secondary spraying cavity downwards so as to provide a medium for the first spraying head, fully utilize the medium resource of the spraying liquid and save the cost.

Furthermore, the lower wall of the primary spraying cavity inclines downwards along the circumferential side, and is provided with a backflow hole for spraying liquid to flow into the gas gathering cavity, so that gas-liquid separation is realized, and the smooth gas outlet of the gas gathering hole is ensured.

Further, the partition plates are arranged on the periphery sides of the lower walls of the secondary spraying cavities in an encircling mode, fillers are laid between the partition plates and the lower walls of the secondary spraying cavities, the through holes are located at the bottoms of the fillers facing the openings on one sides of the secondary spraying cavities, liquid outlet holes communicated with each other are formed in the inner walls of the partition plates, the contact area of gas and liquid is increased, and the purifying effect is further enhanced.

Further, gather gas chamber one side and be equipped with the pump machine, be equipped with the water pipe on the pump machine, the water pipe upper end extends into again drench the intracavity, the second shower head connect in the water pipe realizes spraying the cyclic utilization of liquid, resources are saved.

Drawings

FIG. 1 is a schematic view of the internal structure of a tower according to the present invention;

fig. 2 is an enlarged schematic view of a in fig. 1.

Reference numerals: 1. a tower body; 11. a purified gas outlet; 13. a flue gas inlet; 2. a gas gathering cavity; 21. gas gathering holes; 22. a return orifice; 3. primary drenching cavity; 4. re-drenching the cavity; 51. a first shower head; 52. a second shower head; 6. a partition plate; 61. a filler; 62. a through hole; 63. a liquid outlet hole; 7. a pump machine; 71. a water pipe.

Detailed Description

The following detailed description of the embodiments of the present invention is provided in order to make the technical solution of the present invention easier to understand and understand.

Example (b):

referring to fig. 1, this embodiment provides a flue gas purification's bull spray column, including body of the tower 1, by having set gradually gas gathering chamber 2 on the net down in the body of the tower 1, drench chamber 3 and drench chamber 4 again for the beginning, the intercommunication is equipped with flue gas inlet 13 on gas gathering chamber 2's the inner wall, drench 4 upper ends of chamber for purifying gas export 11 again, the flue gas is followed flue gas inlet 13 gets into in the gas gathering chamber 2, upwards pass through again just drench chamber 3 with drench in the chamber 4 again, get rid of the harmful substance in the flue gas and pass through to last the gas outlet 11 is discharged.

The central part of the upper wall of the gas gathering cavity 2 is upwards bulged and is provided with a gas gathering hole 21 communicated with the primary sprinkling cavity 3, correspondingly, the lower wall of the primary sprinkling cavity 3 inclines downwards along the peripheral side, so that the gas gathering cavity 2 and the separation part between the primary sprinkling cavities 3 are of a regular conical structure with uniform thickness, and flue gas enters the gas gathering cavity 2 and then rises to the top along the upper wall of the gas gathering cavity 2, enters the primary sprinkling cavity 3 through the gas gathering hole 21, so that a gathering effect is realized, and the flue gas entering the primary sprinkling cavity 3 is gathered in a certain range.

The first spray header 51 is arranged in the center of the upper wall of the primary spraying cavity 3, the first spray header 51 is positioned right above the gas gathering hole 21, and the spraying range of the first spray header can completely cover the smoke coming out from the gas gathering hole 21, so that the sufficient purification effect is realized.

And, the circumference of lower wall of the said first drenching the cavity 3 has return holes 22, the spray liquid that the said first shower head 51 gushes out flows to the circumference along the said first drenching the cavity 3 lower wall downward after contacting with flue gas, flow into the said gas collecting cavity 2 bottom from the said return hole 22, in order to be processed subsequently, and the said first drenching the cavity 3 and can realize the gas-liquid separation well with the forward conical structure between the said gas collecting cavities 2, the spray liquid flows downward along the circumference, avoid the spray liquid from gathering the gas hole 21 to flow back and influence the flue gas and rise from gathering the gas hole 21 continuously and evenly.

The central part of the lower wall of the secondary sprinkling cavity 4 is concave downwards, correspondingly, the upper wall of the primary sprinkling cavity 3 inclines upwards along the peripheral side, so that the blocking part between the primary sprinkling cavity 3 and the secondary sprinkling cavity 4 is in an inverted cone structure with uniform thickness, the periphery of the upper wall of the primary showering cavity 3 is provided with a through hole 62 communicated with the secondary showering cavity 4, the flue gas in the primary showering cavity 3 is upwards gathered to the periphery of the upper wall of the primary showering cavity 3 after being subjected to primary purification by the first spray head 51, enters the re-spraying cavity 4 through the through hole 62, a second spray head 52 is arranged in the re-spraying cavity 4, the spray range covers the whole cross section range of the re-spraying cavity 4, the flue gas is purified again, and the sprayed spraying liquid is accumulated at the bottom of the spraying cavity downwards, so that a spraying liquid source is provided for the first spraying head 51, and the flue gas is fully purified, and meanwhile, the resources are saved.

Referring to fig. 2, in order to further enhance the effect of flue gas purification and purify the flue gas entering the re-spraying cavity 4 more sufficiently, in this embodiment, a surrounding partition plate 6 is disposed on the lower wall of the re-spraying cavity 4, a filler 61 is laid between the partition plate 6 and the lower wall of the re-spraying cavity 4, the filler 61 includes, but is not limited to, a material such as plastic, metal, or ceramic, and is mainly used to increase a gas-liquid contact area and promote sufficient reaction, an opening of the through hole 62 on one side of the re-spraying cavity 4 is located at the bottom of the filler 61, and after the filler 61 is sufficiently wetted by the spraying of the second spray head 52, the flue gas is sufficiently reacted and purified from the bottom of the filler 61 upward with the spray liquid in the filler 61.

And the inner wall of the lower side of the partition plate 6 is also provided with a communicated liquid outlet 63 so as to discharge redundant spraying liquid downwards, thereby preventing the excessive liquid accumulation in the filler 61 and the discharged spraying liquid from flowing downwards to the bottom of the repeated spraying cavity 4.

In order to save resources and realize recycling of the spray liquid, in this embodiment, a pump 7 is disposed on the tower body 1, an inlet of the pump 7 is communicated with the gas gathering cavity 2, the spray liquid that does not exceed the liquid level of the inlet of the pump 7 is accumulated at the bottom of the gas gathering cavity 2, a water pipe 71 is disposed on the pump 7, an upper end of the water pipe 71 extends upward into the re-spraying cavity 4, and the second spray header 52 is connected to the water pipe 71, so that, during flue gas purification, the pump 7 pumps the spray liquid in the gas gathering cavity 2, and pumps the spray liquid upward through the water pipe 71 to the second spray header 52 to provide the spray liquid, the spray liquid sprayed from the second spray header 52 is accumulated downward at the bottom of the re-spraying cavity 4 to provide the spray liquid for the first spray header 51, and the spray liquid sprayed from the first spray header 51 flows back into the gas gathering cavity 2 through the backflow hole 22, so far, a cycle is formed, and the spraying liquid in the gas gathering cavity 2 can be cleaned and supplemented as required, so that the resource utilization rate is high.

The above are only typical examples of the present invention, and besides, the present invention may have other embodiments, and all technical solutions formed by equivalent substitutions or equivalent transformations fall within the scope of the present invention.

Claims (4)

1. A multi-head spray tower for purifying flue gas comprises a tower body (1), and is characterized in that a gas gathering cavity (2), a primary spraying cavity (3) and a secondary spraying cavity (4) are sequentially arranged in the tower body (1) from bottom to top, and a purified gas outlet (11) is formed in the upper end of the secondary spraying cavity (4); a flue gas inlet (13) is communicated with the inner wall of the gas-gathering cavity (2), the central part of the upper wall of the gas-gathering cavity (2) is raised upwards, and a gas-gathering hole (21) communicated with the primary spraying cavity (3) is arranged; the central part of the lower wall of the secondary spraying cavity (4) is recessed downwards, and the middle part of the upper wall of the primary spraying cavity (3) is provided with a first spray header (51) communicated with the secondary spraying cavity (4); the upper wall of the primary sprinkling cavity (3) inclines upwards along the circumferential side, a through hole (62) communicated with the secondary sprinkling cavity (4) is formed in the upper wall, and a second spraying head (52) is arranged in the secondary sprinkling cavity (4).

2. The multi-head spray tower for flue gas purification according to claim 1, wherein the lower wall of the primary spray cavity (3) is inclined downwards along the peripheral side and is provided with a return hole (22) for spraying liquid to flow into the gas collecting cavity (2).

3. The multi-head spray tower for purifying flue gas according to claim 1, wherein a partition plate (6) is circumferentially arranged on the periphery of the lower wall of the re-spraying cavity (4), a filler (61) is laid between the partition plate (6) and the lower wall of the re-spraying cavity (4), the opening of the through hole (62) on one side of the re-spraying cavity (4) faces the bottom of the filler (61), and a liquid outlet hole (63) communicated with the opening is formed in the inner wall of the partition plate (6).

4. The multi-head spray tower for purifying flue gas as claimed in claim 1, wherein a pump (7) is arranged on one side of the gas gathering cavity (2), a water pipe (71) is arranged on the pump (7), the upper end of the water pipe (71) extends into the re-spraying cavity (4), and the second spray head (52) is connected to the water pipe (71).

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