CN219023899U

CN219023899U - Flue gas mixing device for improving desulfurization efficiency of sodium-based dry method

Info

Publication number: CN219023899U
Application number: CN202320106278.1U
Authority: CN
Inventors: 谢峰; 李柏林; 杨忠文; 万志刚
Original assignee: Wuhan Suneng Environmental Protection Technology Co ltd
Current assignee: Wuhan Suneng Environmental Protection Technology Co ltd
Priority date: 2023-02-03
Filing date: 2023-02-03
Publication date: 2023-05-16
Anticipated expiration: 2033-02-03

Abstract

The utility model discloses a flue gas mixing device for improving desulfurization efficiency of a sodium-based dry method, which comprises an outer cylinder body, an inner cylinder body, a first blade, a second blade, a supporting tube and a flange, wherein the first blade and the second blade are both curved surfaces and are opposite in rotation direction, the first blade is uniformly welded between the outer cylinder body and the inner cylinder body along the circumference, the upper edge and the lower edge of the first blade are flush and the radian of the blade is gradually reduced from outside to inside, the second blade is uniformly welded between the inner cylinder body and the supporting tube along the circumference, the upper edge of the second blade is flush and the radian of the blade is unchanged, the upper edges of the first blade and the second blade are all intersected on the axis of the supporting tube, and the flange is fixed on the outer vertical surface of the outer cylinder body. The flue gas mixing device can cause the phenomenon of gas turbulence, so that the desulfurizing agent is rapidly diffused to the section of the whole pipeline, the specific surface area of the desulfurizing agent is increased, and the desulfurizing reaction efficiency is further improved.

Description

Flue gas mixing device for improving desulfurization efficiency of sodium-based dry method

Technical Field

The utility model relates to the technical field of environmental protection and energy saving, in particular to a flue gas mixing device for improving desulfurization efficiency by a sodium-based dry method.

Background

The SDS desulfurization process is characterized in that a desulfurizing agent (baking soda NaHCO3 dry powder) is sprayed into a main flue gas pipe through a conveying fan and a pipeline, and reacts with acidic pollutants in the flue gas at a high temperature (more than 140 ℃) to generate neutral salt substances. In recent years, steel enterprises implement ultralow emission reconstruction, the sodium-based dry method (SDS) market ratio in the flue gas desulfurization and denitration process is large, and the process has the advantages of simple flow, small occupied area, low operation cost and the like, and is particularly widely applied to the fields of underground flue gas desulfurization of coke ovens, flue gas desulfurization of hot blast stoves and boilers, and the like. However, the existing desulfurizing agent of the SDS process can be mixed with the flue gas under the action of the negative pressure of the pipeline after being sprayed into the main flue, but the desulfurizing agent cannot be rapidly diffused to the whole pipeline section due to the large pipeline section. The flow rate of the flue gas is generally 18-20m/s, a considerable part of desulfurizing agents are blocked by the 'popcorn' effect of other desulfurizing agents in a short time, and do not participate in the reaction with the polluted gas, so that the flue gas is attached to the surface of a subsequent dust collecting device (a bag-type dust collector) and is collected as a byproduct, and the waste of resources is caused.

Disclosure of Invention

Aiming at the technical problems, the utility model provides a flue gas mixing device for improving the desulfurization efficiency of a sodium-based dry method, which can cause a gas turbulence phenomenon, so that a desulfurizing agent is rapidly diffused to the section of the whole pipeline, the specific surface area of the desulfurizing agent is increased, and the desulfurization reaction efficiency is further improved.

The utility model provides an improve flue gas mixing arrangement of sodium-based dry desulfurization efficiency, includes outer barrel, interior barrel, blade one, blade two, stay tube and flange, blade one and blade two are curved surface and revolve to opposite, blade one along circumference evenly welded between outer barrel and interior barrel, and blade one's upper edge and lower edge all flush and blade radian become little from outside to inside, blade two along circumference evenly welded between interior barrel and stay tube, blade two's upper edge flush and blade radian is unchangeable, blade one and blade two's upper edge all meet on the axis of stay tube, the flange is fixed in on the outer facade of outer barrel.

Preferably, the number of the first blades is twice that of the second blades, and the upper edges of the second blades of each group are aligned with the upper edges of the first blades of the group.

As the optimization of the technical scheme, the blade is divided into two sections, wherein the two sections comprise equal-width sections and gradual-change sections, the width of the blade of the equal-width sections is unchanged, and the width of the blade of the gradual-change sections gradually becomes smaller from the outer side to the inner side.

As a preferable mode of the above technical solution, the upper edges of the first blade and the second blade are on the same horizontal plane and meet at the same point.

As the preferable choice of the technical proposal, the supporting tube adopts a hollow round tube.

The utility model has the beneficial effects that:

the device sets the inner ring and the outer ring of the rotating blade into different directions, causes turbulence, can rapidly diffuse into the section of the whole pipeline along with the movement of the air flow, increases the specific surface area of the desulfurizing agent, further improves the desulfurizing reaction efficiency, can effectively reduce the operation cost of enterprises, and plays a role in energy conservation and efficiency reduction.

Drawings

Fig. 1 is a top view of the present utility model.

Fig. 2 is a cross-sectional view of the present utility model.

Fig. 3 is a front view of a first vane.

Fig. 4 is a top view of a second vane.

The reference numerals are as follows: 1-outer cylinder, 2-inner cylinder, 3-blade I, 4-blade II, 401-equal width section, 402-transition section, 5-support tube and 6-flange.

Detailed Description

The technical scheme of the utility model is clearly and completely described below with reference to the accompanying drawings. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.

The flue gas mixing device for improving desulfurization efficiency by a sodium-based dry method shown in fig. 1 to 4 comprises an outer cylinder body 1, an inner cylinder body 2, a first blade 3, a second blade 4, a support tube 5 and a flange 6, wherein the first blade 3 and the second blade 4 are both curved surfaces and are opposite in rotation direction, the first blade 3 is uniformly welded between the outer cylinder body 1 and the inner cylinder body 2 along the circumference, the upper edge and the lower edge of the first blade 3 are flush and the radian of the blade is gradually reduced from outside to inside, the second blade 4 is uniformly welded between the inner cylinder body 2 and the support tube 5 along the circumference, the upper edge of the second blade 4 is flush and the radian of the blade is unchanged, the upper edges of the first blade 3 and the second blade 4 are all intersected on the axis of the support tube 5, and the flange 6 is fixed on the outer facade of the outer cylinder body 1.

In this embodiment, the number of first blades 3 is twice the number of second blades 4, and the upper edges of each set of second blades 4 are aligned with the upper edges of one set of first blades 3.

In this embodiment, the second blade 4 is divided into two sections, including an equal-width section 401 and a gradual change section 402, where the blade width of the equal-width section 401 is unchanged, and the blade width of the gradual change section 402 gradually decreases from the outside to the inside.

In this embodiment, the upper edges of the first blade 3 and the second blade 4 are on the same horizontal plane and meet at the same point.

In this embodiment, the support tube 5 is a hollow circular tube.

The device sets the inner circle and the outer circle of the rotating blade into different directions, wherein the radian of the blade I3 gradually becomes smaller from outside to inside, the radian of the blade II 4 is unchanged all the time, the mixing of air flow (in the attached figure 1, the arrow direction refers to the direction of the air flow) is more facilitated, turbulence is caused, the desulfurizing agent can be rapidly diffused to the section of the whole pipeline along with the movement of the air flow, the specific surface area of the desulfurizing agent is increased, the desulfurization reaction efficiency is further improved, the operation cost of enterprises can be effectively reduced, and the effects of energy conservation and efficiency reduction are achieved.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The utility model provides an improve flue gas mixing arrangement of sodium-based dry desulfurization efficiency which characterized in that: including outer barrel, interior barrel, blade one, blade two, stay tube and flange, blade one and blade two are the curved surface and revolve to opposite, blade one along circumference evenly welded between outer barrel and interior barrel, and blade one's upper edge and lower limb all flush and blade radian become little from outside to inside, blade two along circumference evenly welded between interior barrel and stay tube, and blade two's upper edge flushes and blade radian is unchangeable, blade one and blade two's upper edge all meet on the axis of stay tube, the flange is fixed in on the outer facade of outer barrel.

2. The flue gas mixing device of claim 1, wherein: the number of first blades is twice the number of second blades, and the upper edge of each second set of blades is aligned with the upper edge of one first set of blades.

3. The flue gas mixing device of claim 1, wherein: the blade is divided into two sections, wherein the two sections comprise equal-width sections and gradual change sections, the width of the blade of the equal-width sections is unchanged, and the width of the blade of the gradual change sections gradually becomes smaller from the outer side to the inner side.

4. The flue gas mixing device of claim 1, wherein: the upper edges of the first blade and the second blade are on the same horizontal plane and meet at the same point.

5. The flue gas mixing device of claim 1, wherein: the supporting tube adopts a hollow round tube.