CN204815972U - Degree of depth dust removal defogging device - Google Patents

Abstract

The utility model discloses a deep dust and mist removal device, which includes several modules connected in parallel, each of which includes a columnar shell, and the shell is provided with an air inlet for air intake, The air outlet for air outlet and the air flow channel between the air inlet and the air outlet, the air flow channel is provided with a turbulence member for making the smoke form a turbulent flow; the deep dust and mist removal device of the utility model enters When the flue gas in the air flow channel passes through the turbulence member, its airflow direction and speed are changed. The small water droplets and tiny particles in the flue gas form turbulent flow and fully collide with each other, collide with each other and agglomerate into large droplets, and the large droplets collide with the inner wall of the housing. Contact with the surface of the spoiler member and form a liquid film, the liquid film flows out along the spoiler member, and can remove fine dust and mist without adding additional power and material consumption. It has the characteristics of low pressure loss and high effect. Investment and operation The cost is low, and it is suitable for popularization and application.

Description

Deep dust and fog removal device

technical field

The utility model relates to a flue gas purification device, in particular to a deep dust and mist removal device.

Background technique

Large-scale coal-fired power plants in my country have basically installed desulfurization, denitrification, dust removal and other environmental protection devices, and the pollution of the flue gas of coal-fired power plants to the atmosphere has been controlled to a certain extent. Improvement, correspondingly promoting the introduction of higher environmental protection standards and the implementation of new environmental protection laws, making coal-fired power plants face higher requirements for the emission of flue gas pollutants under the new situation; with the increasing environmental protection emission standards, the emission standards of thermal power plants The requirements for ultra-low emissions have also been gradually raised, and they have been more and more widely used.

For the requirements of ultra-low emissions, there are currently two main technical routes. The first is to use wet electrostatic precipitator technology, and the second is to use a desulfurization system coupled with other strengthening measures. Option 1 has many application achievements in China at present, but its large investment, high cost, and complicated operation are common problems. Option two is the main direction of technology research and development because it saves investment and operating costs, and has various specific implementation technical routes.

For example, Chinese patent 204182256U discloses a water washing deep dust removal device, which is installed downstream of the wet desulfurization absorption tower. The dust and mist eliminator captures the mist in the flue gas, which can reduce the dust carrying amount in the flue gas, make the flue gas get advanced treatment, solve the technical problem of flue gas dust reaching the standard or even ultra-low emission, and can achieve a certain desulfurization effect , which greatly reduces the investment cost, saves land, and has high flexibility in layout and installation; however, although the removal of fine dust can be achieved by adding a water washing device, there are also complex washing processes, difficult system operation and maintenance, and pressure loss. Big and other issues. As another example, Chinese patent 201420676158.6 discloses a combined cyclone demist and dust removal system, which includes an absorption tower and a clean flue connected in sequence. The original flue gas inlet is provided on the side of the absorption tower, and a spraying system is provided in the absorption tower. The absorption tower is also equipped with a cyclone. The cyclone is located above the spray layer, and the spray layer is located above the original flue gas inlet. For tiny particles, under the same purification rate, the energy consumption of the system is much lower than that of the wet electrostatic precipitator, which reduces the operating cost; however, the system adds an evaporative cooling zone and a gravity separation zone, which makes the process system very complicated and consumes a lot of energy.

Therefore, in order to solve the above technical problems, there is a need for a deep dust and mist removal device, which is installed in the existing desulfurization tower and can remove fine dust and mist without adding additional power and material consumption. It has low pressure loss, The utility model has the characteristics of high effect, low investment and operation cost, and is suitable for popularization and application.

Utility model content

In view of this, the purpose of this utility model is to provide a deep dust removal and mist removal device, which is installed in the existing desulfurization tower, which can remove fine dust and mist without adding additional power and material consumption, and has low pressure loss. , high effect, low investment and operating costs, suitable for popularization and application.

The deep dust and mist removal device of the present utility model includes several modules connected in parallel, each of which includes a columnar shell, and the shell is provided with an air inlet for air intake and an air outlet for air outlet. The air outlet and the air flow channel between the air inlet and the air outlet, the air flow channel is provided with a turbulence member for turbulence of the smoke.

Further, the flow turbulence member includes spiral ribs rising spirally from bottom to top along the inner wall of the housing.

Further, the flow turbulence member also includes a spiral partition group composed of several spiral partitions, and the spiral partitions are distributed along the inner wall of the casing in a spiral form from bottom to top, and the spiral ribs and the spiral partitions Groups are spatially in the form of a double helix.

Further, the spiral partition is arranged obliquely to the horizontal plane.

Further, the air inlet is arranged at the bottom of the casing, and the air outlet is arranged at the top of the casing.

Beneficial effects of the present utility model: the deep dedusting and demisting device of the present utility model is installed in the existing desulfurization tower. When it is located in the spray area, it can be used for cooperative desulfurization and dedusting. Deep dust removal; when the flue gas entering the airflow channel passes through the turbulence member, its airflow direction and speed are changed, and the small water droplets and tiny particles in the flue gas form turbulent flow and fully collide with each other, collide with each other and agglomerate into large droplets, large droplets It is in contact with the inner wall of the housing and the surface of the spoiler to form a liquid film, and the liquid film flows out along the spoiler, which can remove fine dust and mist without adding additional power and material consumption, and has the characteristics of low pressure loss and high effect , low investment and operating costs, suitable for popularization and application.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the structural representation of the module described in embodiment 1;

FIG. 3 is a schematic structural diagram of the module described in Embodiment 2.

Detailed ways

Embodiment one

As shown in Figures 1 and 2, the deep dust and mist removal device of this embodiment includes several modules connected in parallel, and each of the modules includes a columnar housing 1, and the housing 1 is provided with a The air inlet 11, the air outlet 12 for air outlet and the air flow channel between the air inlet 11 and the air outlet 12, the air flow channel is provided with a turbulence member for making the smoke form a turbulence; this device Installed in the existing desulfurization tower, when it is located in the spray area, it can be used for collaborative desulfurization and dust removal, and when it is located above the spray layer, it can be used for deep dust removal; the combination form and number of modules can be determined according to the structure of the desulfurization tower For example, it can be arranged in the form of a square in Figure 1, of course, it can also be arranged in a circular or triangular form, and the number of modules is determined according to the specific size of the desulfurization tower to ensure that the flue gas section is completely filled; the air inlet 11 is preferably located in the shell 1, the air outlet 12 is preferably located on the top of the housing 1, and the smoke moves from bottom to top during use; the housing 1 is cylindrical or polygonal, and has a relatively high height, for example, the height can be 0.5-3.0 m, depends on the use requirements; in this embodiment, the spoiler includes a spiral rib 2 that rises spirally from bottom to top along the inner wall of the housing 1, and the spiral rib 2 is rib-shaped, which can make the smoke form The spiraling swirling airflow, the centrifugal force and negative pressure generated by the flue gas flow change the direction and speed of the flue gas flow, and the small water droplets and tiny particles in the flue gas form turbulence and fully collide with each other, colliding with each other and agglomerating into a large liquid Large droplets contact the inner wall of the housing 1 and the surface of the spoiler to form a liquid film, and the liquid film flows out along the spoiler, which can remove fine dust and mist without adding additional power and material consumption. Spiral rib 2 The strength of the housing 1 can also be enhanced.

Embodiment two

As shown in Figure 3, the deep dust and mist removal device of this embodiment includes several modules connected in parallel, each of which includes a columnar housing 1, and the housing 1 is provided with an air intake for air intake. 11, an air outlet 12 for air outlet, and an air flow channel between the air inlet 11 and the air outlet 12, the air flow channel is provided with a turbulence member for making the smoke form a turbulent flow; this device is installed in the present In some desulfurization towers, when it is located in the spray area, it can be used for cooperative desulfurization and dust removal, and when it is located above the spray layer, it can be used for deep dust removal; the combination form and number of modules can be determined according to the structure of the desulfurization tower, for example, it can be Arranged in a square form in Figure 1, of course, it can also be arranged in a circular or triangular form, and the number of modules is determined according to the specific size of the desulfurization tower to ensure that the flue gas section is completely filled; the air inlet 11 is preferably located at the bottom of the shell 1 , the air outlet 12 is preferably located on the top of the housing 1, and the flue gas moves from bottom to top during use; the housing 1 is cylindrical or polygonal, and has a high height, for example, the height can be 0.5-3.0m, according to It depends on the usage requirements; in this embodiment, the spoiler includes a helical rib 2 that rises spirally from bottom to top along the inner wall of the casing 1, and the spoiler can also include a plurality of spiral baffles 3 The spiral partition group, the spiral partition 3 is distributed along the inner wall of the housing 1 in a spiral form from bottom to top, and the spiral rib 2 and the spiral partition group have a double helix structure in space; the spiral partition 3. It is installed inclined on the horizontal plane; the spiral rib 2 is rib-shaped, which can make the flue gas form a spiraling swirling air flow, and the centrifugal force and negative pressure generated by the flue gas flow change the direction and speed of the flue gas flow, and the small particles in the flue gas The water droplets and tiny particles form turbulence and fully collide with each other, and collide with each other to form large droplets. The large droplets contact the inner wall of the housing 1 and the surface of the spoiler to form a liquid film, and the liquid film flows out along the spoiler without adding Extra power and material consumption can remove fine dust and mist droplets, and the spiral rib 2 can also strengthen the strength of the shell 1; the spiral partition 3 is conducive to improving the turbulence effect of the flue gas, and increases the contact surface with the flue gas, Facilitate the formation and export of droplets.

Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present utility model without limitation. Although the utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the utility model can be Modifications or equivalent replacements of the technical solutions without departing from the purpose and scope of the technical solutions of the utility model shall be covered by the claims of the utility model.

Claims (5)

1. A depth dedusting and demisting device, characterized in that: the device comprises several modules connected side by side, each of which includes a columnar housing, and the housing is provided with an air inlet for air intake , an air outlet for air outlet, and an airflow channel located between the air inlet and the air outlet, the airflow channel is provided with a turbulence member for turbulence of the smoke. 2 . The deep dust and mist removal device according to claim 1 , wherein the flow turbulence member includes spiral ribs rising spirally from bottom to top along the inner wall of the housing. 3 . 3. The deep dust and mist removal device according to claim 2, characterized in that: the turbulence member also includes a spiral partition group composed of several spiral partitions, and the spiral partitions are along the inner wall of the housing from bottom to bottom. The upper part is in a spiral rising distribution, and the spiral rib and the spiral partition group form a double helix structure in space. 4. The deep dust and mist removal device according to claim 3, characterized in that: the spiral partition is arranged obliquely to the horizontal plane. 5. The deep dust and mist removal device according to claim 1, characterized in that: the air inlet is arranged at the bottom of the casing, and the air outlet is arranged at the top of the casing.