CN216024096U

CN216024096U - Wet desulphurization tower device

Info

Publication number: CN216024096U
Application number: CN202022854651.0U
Authority: CN
Inventors: 孙志鹏; 郭婷婷; 邱桂芝; 宋寅; 贾嘉; 王鹤麒
Original assignee: Thermal Power Generation Technology Research Institute of China Datang Corporation Science and Technology Research Institute Co Ltd
Current assignee: Thermal Power Generation Technology Research Institute of China Datang Corporation Science and Technology Research Institute Co Ltd
Priority date: 2020-12-02
Filing date: 2020-12-02
Publication date: 2022-03-15
Anticipated expiration: 2030-12-02

Abstract

The utility model discloses a wet desulphurization tower device in the technical field of desulphurization, which comprises a desulphurization tower inner wall, wherein three layers of spraying are arranged on the desulphurization tower from bottom to top, namely a first spraying layer, a second spraying layer and a third spraying layer, the first spraying layer is provided with a first spraying pipeline, the second spraying layer is provided with a second spraying pipeline, the first spraying layer is provided with a first flue gas flowing area, the second spraying layer is provided with a second flue gas flowing area, and the first spraying layer, the second spraying layer and the third spraying layer are all provided with nozzles.

Description

Wet desulphurization tower device

Technical Field

The utility model relates to the technical field of desulfurization, in particular to a wet desulfurization tower device.

Background

With the implementation of the ultralow emission standard in China, the ultralow emission of sulfur dioxide and other sulfides is realized by adopting a wet desulfurization tower in production fields of coal-fired power plants, coal kilns and the like.

In the limestone-gypsum wet desulphurization process, the spraying layer structure design and the nozzle installation mode directly influence the flow rule of sulfur-containing flue gas in the desulphurization tower and the mixing reaction of spraying slurry and the flue gas, thereby influencing the desulphurization efficiency and the operation energy consumption of the desulphurization tower.

Accordingly, one skilled in the art has provided a wet desulfurization tower apparatus to solve the problems set forth in the background art described above.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a wet desulfurization tower apparatus to solve the above problems of the prior art.

In order to achieve the purpose, the utility model provides the following technical scheme:

a wet desulphurization tower device comprises a desulphurization tower inner wall, wherein three layers of spraying are arranged on the desulphurization tower from bottom to top and respectively comprise a first spraying layer, a second spraying layer and a third spraying layer, the first spraying layer is provided with a first spraying pipeline, nozzles are uniformly arranged on an inner ring pipeline and an outer ring pipeline of the first spraying pipeline, the nozzles uniformly arranged on the outer ring pipeline are hollow cone nozzles, and the nozzles uniformly arranged on the inner ring pipeline are solid cone nozzles; the second spraying layer is provided with second spraying pipelines, and nozzles of the second spraying pipelines are uniformly arranged to be hollow conical nozzles; the third spraying layer is provided with five pipelines which are arranged in a crossed manner, and nozzles arranged in the five pipelines are hollow conical nozzles; the first layer that sprays is provided with first flue gas flow area, and the second sprays the layer and is provided with the second flue gas flow area.

As a further scheme of the utility model: the first layer slurry pipeline that sprays is arranged and is close to the desulfurizing tower internal face, and the first pipeline that sprays is concentric with the desulfurizing tower, and 16 nozzles are evenly arranged to the outer loop pipeline, and 8 nozzles are evenly arranged to the inner ring, and the nozzle is all installed downwards.

As a still further scheme of the utility model: the second sprays the pipeline and is close to the desulfurizing tower center, and 8 nozzles of layer outer loop pipeline are sprayed to the second, 4 nozzles of inner ring pipeline, and the nozzle is installed downwards.

As a still further scheme of the utility model: the third spraying layer is provided with 36 nozzles which are arranged downwards.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, based on a computational fluid mechanics method, the operation efficiency of the wet desulphurization tower can be effectively improved, the energy consumption is reduced, and the blocking phenomenon caused by dust particles in the desulphurization tower can be effectively avoided.

2. According to the flue gas flow law, the first spraying layer slurry pipeline is arranged close to the inner wall surface of the desulfurization tower, the spraying pipeline is concentric with the desulfurization tower, 16 hollow conical nozzles are uniformly arranged on the outer ring pipeline, 8 solid conical nozzles are uniformly arranged on the inner ring pipeline, and the nozzles are all installed downwards. Thereby the central position sprays thick liquid density lower, is favorable to this low-speed flue gas to pass through, avoids blockking up.

3. According to the utility model, the second spraying layer pipeline is close to the center of the desulfurization tower, and the flue gas rising through the center of the first spraying layer is blocked to diffuse to the open area of the tower wall, so that the mixed reaction of the spraying slurry and the flue gas is facilitated, and the blockage caused by reactants and dust is effectively avoided.

4. In the utility model, the third spraying layer is crossed by five pipelines to rectify the flue gas, and the nozzles close to the wall surface have higher density and the nozzles at the center have lower density, so as to avoid the blockage of dust reactant in the low-speed area of the central flue gas.

Drawings

FIG. 1 is a schematic diagram of a geometric model of a flow field and a position of a spray layer in a wet desulfurization tower according to the present invention;

FIG. 2 is a schematic view of a first spray level installation in the present invention;

FIG. 3 is a schematic view of a second spray level installation in the present invention;

fig. 4 is a schematic view of the installation manner of the third spraying layer in the utility model.

In the figure: 1. the inner wall of the desulfurizing tower; 2. a first spray layer; 3. a second spray layer; 4. a third spray layer; 5. a first spray line; 6. a second spray line; 7. a first flue gas flow zone; 8. a second flue gas flow zone; 9. and (4) a nozzle.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 4, in the embodiment of the present invention, a wet desulfurization tower apparatus includes a desulfurization tower inner wall 1, three layers of sprays are arranged in the desulfurization tower from bottom to top, which are respectively a first spray layer 2, a second spray layer 3 and a third spray layer 4, the first spray layer 2 is provided with a first spray pipeline 5, nozzles 9 are uniformly arranged in an inner ring pipeline and an outer ring pipeline of the first spray pipeline 5, the nozzles 9 uniformly arranged in the outer ring pipeline are hollow cone nozzles, and the nozzles 9 uniformly arranged in the inner ring pipeline are solid cone nozzles;

the second spraying layer 3 is provided with a second spraying pipeline 6, and nozzles 9 of the second spraying pipeline 6 are uniformly arranged to be hollow conical nozzles;

the third spraying layer 4 is provided with five pipelines which are arranged in a cross way, and nozzles 9 arranged in the five pipelines are hollow conical nozzles;

the first spraying layer 2 is provided with a first flue gas flowing area 7, and the second spraying layer 3 is provided with a second flue gas flowing area 8.

Wherein, the first 2 thick liquid pipelines on layer of spraying are arranged and are close to 1 face of desulfurizing tower inner wall, and first spraying pipeline 5 is concentric with the desulfurizing tower, and 16 nozzles 9 are evenly arranged to the outer loop pipeline, 8 nozzles 9 are evenly arranged to the inner loop, and nozzles 9 are all installed downwards.

As a still further scheme of the utility model: the second spraying pipeline 6 is close to the center of the desulfurizing tower, 8 nozzles 9 of the outer ring pipeline of the

second spraying layer

3 and 4 nozzles 9 of the inner ring pipeline are arranged, and the nozzles 9 are arranged downwards.

As a still further scheme of the utility model: the third spray level 4 has 36 spray nozzles 9 arranged in total, the spray nozzles 9 being mounted facing downwards.

The working principle of the utility model is as follows: through to the flue gas law of flowing, first spray pipeline 5 arranges and is close to 1 face of desulfurizing tower inner wall, and first spray pipeline 5 is concentric with the desulfurizing tower, and outer loop pipe way evenly arranges 16

hollow awl nozzles

9, and 8 solid awl nozzles 9 are evenly arranged to the inner ring, and nozzle 9 all installs down. Thereby the density of the spraying slurry at the central position is lower, the low-speed smoke gas at the central position can pass through the spraying slurry, the blockage is avoided, the flue gas which rises through the center of the first spraying layer 2 is blocked to diffuse to the open area of the tower wall by the second spraying pipeline 6 which is close to the center of the desulfurizing tower, thereby not only being beneficial to the mixed reaction of the spraying slurry and the flue gas, but also effectively avoiding the blockage caused by reactants and dust, and the five pipelines are arranged in a crossed way through the third spraying layer 3, the flue gas is rectified, the density of the nozzles close to the wall surface is higher, the density of the nozzles arranged at the center is lower, so as to avoid the blockage of dust reactant in the central smoke low-speed area, and through a method based on computational fluid mechanics, according to the flowing rule of sulfur-containing flue gas of spraying slurry in the desulfurizing tower, the operating efficiency of the wet desulfurizing tower can be effectively improved, the energy consumption is reduced, and meanwhile, the blocking phenomenon caused by dust particles in the desulfurizing tower can be effectively avoided.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The utility model provides a wet flue gas desulfurization tower device, includes desulfurizing tower inner wall (1), its characterized in that: three layers of spraying are arranged in the desulfurization tower from bottom to top, namely a first spraying layer (2), a second spraying layer (3) and a third spraying layer (4), the first spraying layer (2) is provided with a first spraying pipeline (5), nozzles (9) are uniformly arranged on inner and outer ring pipelines of the first spraying pipeline (5), the nozzles (9) uniformly arranged on the outer ring pipeline are hollow cone nozzles, and the nozzles (9) uniformly arranged on the inner ring pipeline are solid cone nozzles;

the second spraying layer (3) is provided with a second spraying pipeline (6), and the second spraying pipeline (6) is uniformly provided with the nozzles (9) which are hollow cone nozzles;

the third spraying layer (4) is provided with five pipelines which are arranged in a cross way, and the nozzles (9) arranged in the five pipelines are hollow conical nozzles;

the first spraying layer (2) is provided with a first flue gas flowing area (7), and the second spraying layer (3) is provided with a second flue gas flowing area (8).

2. The wet desulfurization tower apparatus according to claim 1, wherein: the first layer (2) slurry pipeline that sprays arranges and is close to desulfurizing tower inner wall (1) face, first spray pipeline (5) and desulfurizing tower are concentric, and outer loop pipe way evenly arranges 16 nozzle (9), inner ring evenly arranges 8 nozzle (9), nozzle (9) are all installed down.

3. The wet desulfurization tower apparatus according to claim 1, wherein: the second spraying pipeline (6) is close to the center of the desulfurizing tower, the outer ring pipelines of the second spraying layer (3) are 8 nozzles (9), the inner ring pipelines are 4 nozzles (9), and the nozzles (9) are installed downwards.

4. The wet desulfurization tower apparatus according to claim 1, wherein: the third spraying layer (4) is provided with 36 nozzles (9), and the nozzles (9) are installed downwards.