CN210186853U

CN210186853U - Desulfurization spray tower

Info

Publication number: CN210186853U
Application number: CN201822233231.3U
Authority: CN
Inventors: Zezhu Li; 李泽铸; Bo Ning; 宁波
Original assignee: Guizhou Dafang Power Generation Co Ltd
Current assignee: Guizhou Dafang Power Generation Co Ltd
Priority date: 2018-12-28
Filing date: 2018-12-28
Publication date: 2020-03-27
Anticipated expiration: 2028-12-28

Abstract

The utility model discloses a desulfurization spray tower, which comprises a tower body, wherein a demister, a spray zone, an absorption zone and a slurry layer are sequentially arranged in the tower body from top to bottom; the spraying area comprises two spraying layers which are arranged in an up-and-down separated mode, each spraying layer is provided with a spraying pipe network, each spraying pipe network is composed of a plurality of criss-cross water inlet pipelines, and two sides of each water inlet pipeline are provided with atomizing spray heads; and a smoke baffle plate is arranged between the upper layer and the lower layer of the spraying layer. Adopt the utility model discloses a change desulfurization spray column's structure, the reinforcing sprays the ability to the guide flue gas is avoided the flue gas to form the flue gas corridor, further improves desulfurization efficiency.

Description

Desulfurization spray tower

Technical Field

The utility model relates to a thermal power field particularly, relates to a desulfurization spray column.

Background

In the prior art, wet desulphurization in industrial production is characterized in that a desulphurization system is positioned at the tail end of a flue and behind a dust remover, and the reaction temperature in the desulphurization process is lower than the dew point, so that the desulfurized flue gas can be discharged only by reheating. Because of the gas-liquid reaction, the desulfurization reaction speed is high, the efficiency is high, and the utilization rate of the desulfurization additive is high, when lime is used as a desulfurizer, the desulfurization rate can reach 90 percent when Ca/S is 1, and the method is suitable for flue gas desulfurization of large coal-fired power stations. However, wet flue gas desulfurization has the problems of wastewater treatment, large initial investment and high operating cost. With the continuous improvement of the sulfur dioxide emission standard of the thermal power plant in China and the increase of the sulfur content of the fire coal compared with the prior art, the existing wet desulphurization unit can not meet the relevant requirements. The desulfurization efficiency is further improved, so that the sulfur dioxide emission standard meets the national requirements.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a desulfurization spray column, through the structure that changes desulfurization spray column, the reinforcing sprays the ability to the guide flue gas is avoided the flue gas to form the flue gas corridor, further improves desulfurization efficiency.

In order to achieve the technical purpose, the utility model discloses a technical scheme specifically as follows:

a desulfurization spray column is characterized in that: the tower comprises a tower body, wherein a demister, a spraying area, an absorption area and a slurry layer are sequentially arranged in the tower body from top to bottom; the spraying area comprises two spraying layers which are arranged in an up-and-down separated mode, each spraying layer is provided with a spraying pipe network, each spraying pipe network is composed of a plurality of criss-cross water inlet pipelines, and two sides of each water inlet pipeline are provided with atomizing spray heads; and a smoke baffle plate is arranged between the upper layer and the lower layer of the spraying layer.

Furthermore, a flue gas inlet is arranged below the tower body, and a flow guide structure is arranged at the flue gas inlet.

Further, a flue gas outlet is also formed in the top of the tower body.

Furthermore, the flow guide structure is in a ring shape formed by sequentially connecting a plurality of inclined metal plates.

Furthermore, a plurality of circulation holes are formed in the smoke blocking plate.

Further, the spraying pipe networks are communicated with the water inlet main pipe.

Furthermore, an auxiliary mounting bracket is also arranged between the spraying pipe networks on the upper and lower spraying layers.

The beneficial effects of the utility model reside in that: the utility model discloses be different from prior art, adopt the utility model discloses can effectively strengthen desulfurization efficiency, under load factor (65%) lower condition, because the increase of desulfurization system exerting oneself, when the sulfur is within 2.75%, through the adjustment control pH value, slurry circulating pump power consumption obviously reduces, accords with national energy saving and emission reduction's demand.

Drawings

FIG. 1 is a schematic view of a desulfurization spray tower provided by the present invention;

reference numerals:

1 is the tower body, 2 is the thick liquid layer, 3 is the flue gas import, 4 is the water conservancy diversion structure, 5 is the absorption zone, 6 is the spray pipe network, 7 is the main pipe of intaking, 8 is auxiliary erection support, 9 is the defroster, 10 is the exhanst gas outlet.

Detailed Description

The present invention will be described in further detail below with reference to specific embodiments and with reference to the accompanying drawings.

As shown in fig. 1, a desulfurization spray tower comprises a tower body 1, wherein a demister 9, a spray zone, an absorption zone 5 and a slurry layer 2 are sequentially arranged in the tower body 1 from top to bottom;

the spraying area comprises two spraying layers which are arranged in an up-and-down separated mode, each spraying layer is provided with a spraying pipe network 6, each spraying pipe network 6 is composed of a plurality of water inlet pipelines which are staggered in a criss-cross mode, and two sides of each water inlet pipeline are provided with atomizing spray heads; the spraying pipe network 6 is communicated with the water inlet main pipe 7. An auxiliary mounting bracket 8 is also arranged between the spraying pipe networks 6 on the upper and lower spraying layers. The auxiliary mounting bracket 8 can improve the strength of the lower spraying pipe network 6.

And a smoke baffle plate is arranged between the upper layer and the lower layer of the spraying layer. The smoke blocking plate is provided with a plurality of circulation holes.

A flue gas inlet 3 is arranged below the tower body 1, and a flow guide structure 4 is arranged at the flue gas inlet 3. The top of the tower body 1 is also provided with a flue gas outlet 10. The flow guide structure 4 is an annular structure formed by sequentially connecting a plurality of inclined metal plates.

During the in-service use, the flue gas that needs the desulfurization is let in the spray column, and the flue gas is at first by annular water conservancy diversion structure 4, and water conservancy diversion structure 4 avoids forming the flue gas corridor in 5 entry positions in absorption area with the flue gas water conservancy diversion. At this moment, open into water and be responsible for 7 ways, the pipe network 6 that sprays on two layers of spraying of going up the line simultaneously is managed to 7 ways of intaking and leads to water, and the pipe network 6 quantity that sprays of lower part is more than and does not spray pipe network 6 quantity to all set up the atomizing shower head in every both sides that spray every water intake pipe of pipe network 6, upper and lower two-layer atomizing shower head effectively improves and sprays the coverage area, fully reacts with the flue gas. Simultaneously, the flue gas baffler that sets up between upper and lower two-layer spray the layer can avoid a large amount of flue gases to rise simultaneously, with the main locking of spraying the district and send down, the level is good. Adopt the utility model discloses can effectively strengthen desulfurization efficiency, under the lower condition of load factor (65%), because the increase of desulfurization system exerting oneself, when the sulfur is within 2.75%, through the adjustment control pH value, slurry circulating pump power consumption obviously reduces, accords with national energy saving and emission reduction's demand.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A desulfurization spray column is characterized in that: the tower comprises a tower body, wherein a demister, a spraying area, an absorption area and a slurry layer are sequentially arranged in the tower body from top to bottom; the spraying area comprises two spraying layers which are arranged in an up-and-down separated mode, each spraying layer is provided with a spraying pipe network, each spraying pipe network is composed of a plurality of criss-cross water inlet pipelines, and two sides of each water inlet pipeline are provided with atomizing spray heads; and a smoke baffle plate is arranged between the upper layer and the lower layer of the spraying layer.

2. The desulfurization spray tower of claim 1, wherein: a flue gas inlet is arranged below the tower body, and a flow guide structure is arranged at the flue gas inlet.

3. The desulfurization spray tower of claim 2, wherein: the top of the tower body is also provided with a flue gas outlet.

4. The desulfurization spray tower of claim 2, wherein: the flow guide structure is in an annular shape formed by sequentially connecting a plurality of obliquely arranged metal plates.

5. The desulfurization spray tower of claim 1, wherein: the smoke blocking plate is provided with a plurality of circulation holes.

6. The desulfurization spray tower of claim 1, wherein: the spraying pipe network is communicated with the water inlet main pipe.

7. The desulfurization spray tower of claim 1, wherein: an auxiliary mounting bracket is also arranged between the spraying pipe networks on the upper and lower spraying layers.