Flue gas disturbance mixer for dry desulfurization

Abstract

The utility model provides a dry desulfurization flue gas disturbance mixer which comprises a flue body used for guiding flue gas and dry powder to flow, an airflow disturbance mixer is arranged at the rear end of a dry powder spraying inlet in the flue body, and the airflow disturbance mixer is composed of a plurality of turbulent flow mechanisms used for disturbing the flue gas and the dry powder. The turbulent flow mechanism is fixedly mounted on the inner side surface of the flue main body through welding; by arranging the multiple spoilers, smoke and dry powder can form a complex flowing path around the spoilers, the smoke and the dry powder are promoted to be better mixed on the microcosmic level, the chemical reaction process is accelerated, meanwhile, the flowing direction of the smoke and the dry powder can be changed, strong disturbance is generated, the laminar flow state of fluid is broken through the disturbance, and therefore the smoke and the dry powder can be better mixed. The flue gas and the dry powder are mutually infiltrated and mixed more uniformly, the uniform mixing state enables the dry desulfurization reaction to be more stable, the problems of incomplete reaction and the like caused by non-uniform mixing are reduced, and the desulfurization efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to dry desulfurization technical field, specifically, relate to a dry desulfurization flue gas disturbance mixer. BACKGROUND

[0002] The flue gas of ferrosilicon smelting submerged arc furnace, alloy reduction furnace, blast furnace hot blast furnace of iron and steel enterprise and coking industry, due to the low SO2 content in the flue gas, the flue gas temperature is 150-220 DEG C, especially suitable for dry desulfurization process of soda or calcium-based dry powder as absorbent, the process directly sprays dry powder into flue, and the gas-solid chemical reaction with SO2 in the flue gas is completed, however, the prior art has the following shortcomings when in use:

[0003] In the dry desulfurization process, the mixing uniformity of flue gas and desulfurization dry powder plays a key role in desulfurization efficiency, after injecting dry powder into the flue, the dry powder cannot be fully mixed with flue gas in the flue, resulting in long gas-solid reaction time, affecting the actual reaction efficiency.

[0004] Therefore, a dry desulfurization flue gas disturbance mixer is needed to solve the above problems. UTILITY MODEL CONTENT

[0005] The utility model aims at: in view of the existing problem in the dry desulfurization process, the mixing uniformity of flue gas and desulfurization dry powder plays a key role in desulfurization efficiency, after injecting dry powder into the flue, the dry powder cannot be fully mixed with flue gas in the flue, resulting in long gas-solid reaction time, affecting the actual reaction efficiency.

[0006] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A dry desulfurization flue gas disturbance mixer is used to improve the above-mentioned problems.

[0008] The application is as follows:

[0009] A dry desulfurization flue gas disturbance mixer, comprising a flue main body for guiding the flow of flue gas and dry powder, a gas flow disturbance mixer is arranged at the rear end of the dry powder injection port in the flue main body, the gas flow disturbance mixer is composed of a plurality of flow disturbance mechanisms for disturbing flue gas and dry powder, and the flow disturbance mechanisms are fixedly installed on the inner side surface of the flue main body by welding.

[0010] As a preferred technical scheme of the application, the flow disturbance mechanism comprises an X-shaped flow spoiler, and the opposite side surfaces of the flow spoiler are X-shaped arc convex surfaces.

[0011] As a preferred technical scheme of the application, the width value of the middle part of the flow spoiler is greater than the width value of the end part.

[0012] As the preferred technical scheme of the present application, the spoiler mechanism comprises spoilers in X-shaped corrugated form, and opposite side surfaces of the spoilers are both planes.

[0013] As the preferred technical scheme of the present application, the spoilers are linearly and equidistantly arranged, and a spacing value between two adjacent spoilers is less than one third of a width value of the spoiler.

[0014] As the preferred technical scheme of the present application, the spoilers are symmetrically arranged about a central axis of the flue body.

[0015] As the preferred technical scheme of the present application, the spoilers are made of carbon steel.

[0016] Compared with the prior art, the present application has the following beneficial effects:

[0017] In the scheme of the present application:

[0018] 1. The multiple spoiler mechanisms can increase the contact area of the flue gas and the dry powder inside the flue body, so that the flue gas is divided into multiple small air flows when flowing through the spoiler mechanisms, and the dry powder can be more uniformly dispersed into the small air flows, so that the flue gas and the dry powder are more fully contacted, the reaction time is further shortened, and the desulfurization efficiency is improved.

[0019] 2. The multiple spoiler mechanisms can make the flue gas and the dry powder more uniformly distributed on the cross section of the flue body, avoid local dry powder concentration being too high or too low, and improve the overall desulfurization effect. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The overall structure of the dry desulfurization flue gas disturbance mixer provided by the present application Figure 1 .

[0021] Figure 2 The overall structure of the dry desulfurization flue gas disturbance mixer provided by the present application Figure 2 .

[0022] Figure 3 The first form structure of the spoiler mechanism in the dry desulfurization flue gas disturbance mixer provided by the present application.

[0023] Figure 4 The second form structure of the spoiler mechanism in the dry desulfurization flue gas disturbance mixer provided by the present application.

[0024] Indicated in the figure:

[0025] 1, flue body; 2, air flow disturbance mixer; 3, spoiler mechanism; 4, spoiler. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments of the present application.

[0027] In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present application is usually placed, or the orientation or positional relationship commonly understood by those skilled in the art. Such terms are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0028] Embodiment:

[0029] As shown in Figures 1-4 , the dry desulfurization flue gas disturbance mixer proposed in the present embodiment includes a flue body 1 for guiding the flow of flue gas and dry powder, a gas flow disturbance mixer 2 is arranged at the rear end of the dry powder injection port inside the flue body 1, the gas flow disturbance mixer 2 is composed of a plurality of disturbance mechanisms 3 for disturbing flue gas and dry powder, and the disturbance mechanisms 3 are fixedly installed on the inner surface of the flue body 1 by welding;

[0030] After the dry powder is injected into the inside of the flue body 1, the plurality of disturbance mechanisms 3 arranged can increase the contact area of the flue gas and the dry powder, so that the flue gas is divided into a plurality of small gas flows when flowing through the disturbance mechanisms 3, and the dry powder can be more uniformly dispersed into these small gas flows, so that the flue gas and the dry powder are more fully contacted, and the reaction time is further shortened.

[0031] As shown in Figure 1 and Figure 3 , the disturbance mechanism 3 includes an X-shaped disturbance plate 4, the opposite two side surfaces of the disturbance plate 4 are X-shaped arc convex surfaces, and the width value of the middle part of the disturbance plate 4 is greater than the width value of the end part;

[0032] By setting the X-shaped spoiler 4, the flue gas and dry powder can form a complex flow path around the spoiler 4, which can promote better mixing at the micro level and accelerate the chemical reaction process. At the same time, the X-shaped spoiler 4 can change the flow direction of the flue gas and dry powder, producing strong disturbance, which breaks the laminar flow state of the fluid, making the flue gas and dry powder penetrate each other and mix more evenly. The uniform mixing state can make the dry desulfurization reaction more stable, reduce the problem of incomplete reaction caused by uneven mixing, and improve the desulfurization efficiency.

[0033] As shown in Figure 2 and Figure 4 , the spoiler mechanism 3 includes X-shaped corrugated spoilers 4, and the opposite sides of the spoilers 4 are both flat, and the two spoilers 4 are respectively attached to the opposite inner surfaces of the flue body 1.

[0034] The X-shaped corrugated spoiler 4 has a unique curved surface structure, and its surface area is greatly increased compared to ordinary flat plates. When the flue gas and dry powder pass through the spoiler 4, the dry powder can be more fully dispersed into the flue gas, greatly increasing the contact area between the two and increasing the probability of reaction collision. At the same time, the flue gas and dry powder flow along the wavy path on the surface of the spoiler 4, increasing the actual flow distance and residence time in the flue body 1, providing more time for the two to mix and react, and improving the reaction efficiency.

[0035] As shown in Figure 3 and Figure 4 , the spoilers 4 are linearly and equidistantly arranged, and the spacing between adjacent two spoilers 4 is less than one third of the width of the spoiler 4, and the spoilers 4 are symmetrically arranged about the central axis of the flue body 1.

[0036] Through the multiple linearly and equidistantly arranged spoilers 4, the flue gas and dry powder can be more evenly distributed in the cross section of the flue body 1, avoiding local over-concentration or under-concentration of dry powder, and improving the overall desulfurization effect.

[0037] As shown in Figure 3 and Figure 4 , the spoiler 4 is made of carbon steel.

[0038] The carbon steel spoiler 4 has a certain strength and can withstand the impact force brought by the flue gas flow and the friction force of the dry powder particles. It is not easy to deform or damage itself and is not prone to brittle fracture. It can ensure that the spoiler 4 works stably in the flue body 1 for a long time, ensure the disturbance and mixing effect of the flue gas and dry powder, and be beneficial to actual use.

[0039] The above examples are only used to illustrate the technical solutions described in the utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the above-described various embodiments, the utility model is not limited to the above-described specific embodiments, and therefore any modification or equivalent replacement of the utility model is allowed. Any technical solution and improvement that does not deviate from the spirit and scope of the utility model is included in the scope of the claims of the utility model.

Claims

1. A dry desulfurized flue gas turbulence mixer comprising a flue body (1) for guiding the flue gas and dry powder flow, characterized in that, The rear end of the dry powder injection inlet inside the flue body (1) is provided with an airflow disturbance mixer (2), which is composed of several turbulence mechanisms (3) for disturbing the flue gas and dry powder.

2. A dry desulfurization flue gas disturbance mixer according to claim 1, characterized in that, The turbulence mechanism (3) includes an X-shaped turbulence plate (4), and the opposite side surfaces of the turbulence plate (4) are X-shaped arc convex surfaces.

3. A dry desulfurization flue gas disturbance mixer according to claim 2, characterized in that, The width value of the turbulence plate (4) at the middle part is greater than that at the end part.

4. A dry desulfurization flue gas disturbance mixer according to claim 1, characterized in that, The turbulence mechanism (3) includes an X-shaped corrugated turbulence plate (4), and the opposite side surfaces of the turbulence plate (4) are planes, and the two turbulence plates (4) are respectively fitted with the opposite two inner side surfaces of the flue body (1).

5. A dry desulfurization flue gas disturbance mixer according to claim 4, characterized in that, Several turbulence plates (4) are linearly and equidistantly arranged, and the spacing value between adjacent two turbulence plates (4) is less than one third of the width value of the turbulence plate (4) itself.

6. A dry desulfurization flue gas disturbance mixer according to claim 2, characterized in that, The turbulence plate (4) is symmetrically arranged about the central axis of the flue body (1).

7. A dry desulfurization flue gas disturbance mixer according to claim 2, characterized in that, The turbulence plate (4) is made of carbon steel.

Images