CN216935395U

CN216935395U - Gas-mixing type defogging and whitening device and tail gas absorption tower comprising same

Info

Publication number: CN216935395U
Application number: CN202220793803.7U
Authority: CN
Inventors: 谭军华; 张�雄; 张铭; 黄孙山; 秦世财
Original assignee: Dongguan Pengjin Machinery Technology Co ltd
Current assignee: Dongguan Pengjin Machinery Technology Co ltd
Priority date: 2022-04-07
Filing date: 2022-04-07
Publication date: 2022-07-12
Anticipated expiration: 2032-04-07

Abstract

The utility model discloses an air-mixing type defogging and whitening device and a tail gas absorption tower comprising the same. The air-mixing type defogging and whitening device comprises a main pipe, a siphon pipe and a top cap; the main pipe comprises an exhaust flow channel and a cold air inlet, the exhaust flow channel penetrates through the main pipe along the axial direction, and the cold air inlet penetrates through the main pipe along the radial direction; the siphon pipe comprises a natural air passage which penetrates through the main pipe along the axial direction, the siphon pipe is obliquely arranged outside the main pipe, and the high end of the natural air passage is connected to the cold air inlet of the main pipe; the top cap is arranged at the top end of the main pipe. The tail gas absorption tower comprises the gas-mixing type defogging and whitening device. When the device is put into use, high-temperature tail gas with an initial speed enters the main pipe, negative pressure is formed at the communication position of the siphon pipe and the main pipe, so that external air enters the main pipe from the cold air inlet along the siphon pipe to perform heat exchange with the high-temperature tail gas, and the temperature is reduced to remove fog and white. The gas mixing type de-misting and de-whitening device is arranged on the tower body, and can be used for de-misting and de-whitening the tail gas in the treatment tower; simple structure, the installation is convenient and need not other energy consumption equipment, reduce cost.

Description

Gas-mixing type defogging and whitening device and tail gas absorption tower comprising same

Technical Field

The utility model belongs to the technical field of tail gas treatment equipment, and particularly relates to an air-mixing type demisting and white-removing device and a tail gas absorption tower comprising the same.

Background

The whitening is one of the common problems of the tail gas absorption tower. N-methyl pyrrolidone (NMP) tail gas absorption tower is used for recovering NMP by utilizing the characteristic that NMP and water are mutually soluble, so that a large amount of pure water is needed for rinsing, the moisture content in the air of the absorption tower is high, and the NMP and the water are dissolved to release heat and increase the temperature because the temperature of the tail gas is between 30 ℃ and 50 ℃. The temperature of tail gas discharged by the absorption tower is far higher than that of the outside, and especially in winter, white fog is generated to influence the environment.

At present, a white mist eliminator of a tail gas absorption tower has a complex structure, a large number of pipelines are needed, and extra energy consumption equipment is needed. Correspondingly, in order to achieve white elimination, the treatment tower body needs to be subjected to complex treatment, other energy equipment also needs to be used to increase energy consumption, and the resource utilization rate is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an air-mixing type defogging and whitening device which is simple in structure and does not need other energy consumption equipment and a tail gas absorption tower comprising the same.

The utility model provides an air-mixing type defogging and whitening device, which comprises a main pipe, a siphon pipe and a top cap; the main pipe comprises an exhaust runner and a cold air inlet, the exhaust runner penetrates through the main pipe along the axial direction, and the cold air inlet penetrates through the main pipe along the radial direction; the siphon pipe comprises a natural air passage which penetrates along the axial direction, the siphon pipe is obliquely arranged outside the main pipe, and the high end of the natural air passage is connected to the cold air inlet of the main pipe; the top cap is arranged at the top end of the main pipe.

The main pipe is a cylindrical pipe, a connecting flange is arranged at the bottom end of the main pipe, and a supporting angle steel is arranged outside the top end of the main pipe and used for installing the top cap.

The top cap is a conical cap, and the diameter of the bottom surface of the top cap is larger than the outer diameter of the main pipe; the top cap is connected with the supporting angle steel by the inner surface of the side wall of the top cap.

The siphon comprises a straight line section and a reducing section, wherein the diameter of the reducing section is gradually reduced from bottom to top; each siphon is evenly arranged outside the main pipe, and the small-diameter end of the variable-diameter section of each siphon is communicated with the main pipe.

In one embodiment, in order to prevent the outflow of the condensed water, a guide plate is further included, the guide plate is connected to the inside of the main pipe, a top connection point is higher than a top point of the cold air inlet, and a bottom connection point is lower than a bottom point of the cold air inlet.

Further, the baffle is arranged obliquely, and the lower end of the baffle faces the axial center of the main pipe.

The utility model also provides a tail gas absorption tower, which comprises a tower body and the gas mixing type mist and white remover, wherein the gas mixing type mist and white remover is connected to the tower body through the bottom end of the main pipe.

In order to improve the tail gas flow rate, the tower body comprises a cylindrical section, a conical section and a butt flange which are sequentially arranged from bottom to top; the air mixing type demisting and white eliminating device is connected to the butt flange through a flange.

When the air-mixing type defogging and whitening device is put into use, high-temperature tail gas enters the main pipe from top to bottom, negative pressure can be formed at the communication position of the siphon pipe and the main pipe due to certain flow velocity of the high-temperature tail gas, external air enters the main pipe from the cold air inlet along the siphon pipe under the action of the negative pressure, heat exchange is carried out between the external air and the high-temperature tail gas in the main pipe, the temperature of the high-temperature tail gas is reduced, and the purposes of defogging and whitening are achieved. The gas mixing type de-misting and de-whitening device is arranged on the tower body, and can be used for de-misting and de-whitening the tail gas in the treatment tower; simple structure, the installation is convenient and need not other energy consumption equipment, reduce cost.

Drawings

Fig. 1 is a schematic structural diagram of a first preferred embodiment of the present invention.

Fig. 2 is a schematic view of a second preferred embodiment of the present invention in a use state.

Reference numerals

A, an air-mixing type defogging and whitening device;

1-main pipe;

2-siphon, 21-straight section, 22-reducing section;

3, carrying out top capping;

4, connecting a flange;

5, supporting angle steel;

6-a deflector;

b-tower body, B1-cylinder section, B2-cone section, B3-butt flange.

Detailed Description

First preferred embodiment, as shown in fig. 1, the air-mixing type mist and white remover a disclosed in the present embodiment comprises a main pipe 1, a siphon 2 and a top cap 3; the siphon 2 is obliquely arranged outside the main pipe 1, and the top cap 3 is arranged at the top end of the main pipe 1.

The main pipe 1 is a cylindrical pipe, the bottom end of the main pipe is provided with a connecting flange 4 so as to be installed with other equipment, a plurality of supporting angle steels 5 are uniformly arranged outside the pipe wall of the top end of the main pipe for installing the top cap 3, the axial central through hole of the main pipe is an exhaust gas flow passage, the pipe wall of the main pipe is provided with a through hole as a cold air inlet, and the cold air inlet is used for receiving external air sucked from the siphon 2.

The siphon 2 comprises a straight line section 21 and a reducing section 22, and the diameter of the reducing section decreases progressively from bottom to top; the siphon pipes 2 are uniformly arranged outside the main pipe 1, and the small-diameter ends of the variable-diameter sections 22 of the siphon pipes 2 are communicated with the cold air inlet on the main pipe 1. Meanwhile, in order to prevent the condensed water generated in the main pipe from leaking, a flow guide plate 6 is arranged at the cold air inlet. In order to ensure the effect of shielding the flow guide, the flow guide plate 6 is arranged obliquely, the lower end of the flow guide plate faces to the axial center of the main pipe 1, the size of the flow guide plate 6 is designed to be larger than that of the cold air inlet, the high end of the flow guide plate is higher than the top point of the cold air inlet, and the lower end of the flow guide plate is lower than the bottom point of the cold air inlet.

In the embodiment, the top cap 3 is mainly used for preventing rainwater from entering, so that the top cap 3 is designed into a conical cap, and the diameter of the bottom surface of the conical cap is larger than the outer diameter of the main pipe 1; the top cap 3 is arranged on the support angle steel 5 by the inner surface of the side wall thereof; the exhaust gas is discharged from the gap between the top cap 3 and the main pipe 1.

In the high temperature tail gas down gets into the person in charge 1 from last when this embodiment comes into operation, because high temperature tail gas has certain velocity of flow, can form the negative pressure in siphon 2 and the intercommunication department of being responsible for 1, under the effect of negative pressure, outside air is along siphon 2 in the self-cooling inlet of entry main pipe, and outside air takes place the heat exchange with high temperature tail gas in being responsible for, reduces high temperature tail gas temperature, reaches the purpose that the fog was disappeared to the white. The fog and white removal can be realized, and the condensed pure water can be relatively uniformly recovered along the main pipe 1 and the guide plate 6, so that the resource utilization rate is improved.

Second preferred embodiment, as shown in fig. 2, this embodiment is a specific application of the first preferred embodiment, and the air-mixing type demister a provided by the first preferred embodiment is used in the tail gas absorption tower.

The tail gas absorption tower comprises a tower body B and an air-mixing type defogging and whitening device A. Tower body B includes from down up cylinder section B1, circular cone section B2 and the flange B3 that sets gradually, can increase the velocity of flow of tail gas through setting up of circular cone section B2, is convenient for install gas-mixing formula through flange B3 and removes fog and white ware A, flange B3's model, size and flange 4 phase-matchs. When the air mixing type defogging and whitening device A is installed, the air mixing type defogging and whitening device A is installed on the butt flange B3 through the connecting flange 4.

The integrated structure is simple, the installation is convenient, other pipelines are not required to be arranged outside, the defogging and whitening and the recovery of condensed water can be realized without extra energy consumption equipment, the cost is convenient to reduce, and the resource utilization rate is improved.

The present invention is not limited to the above preferred embodiments, and 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. The utility model provides an air-mixing formula defogging white ware that disappears which characterized in that: comprises a main pipe, a siphon pipe and a top cap; the main pipe comprises an exhaust runner and a cold air inlet, the exhaust runner penetrates through the main pipe along the axial direction, and the cold air inlet penetrates through the main pipe along the radial direction; the siphon pipe comprises a natural air passage which penetrates along the axial direction, the siphon pipe is obliquely arranged outside the main pipe, and the high end of the natural air passage is connected to the cold air inlet of the main pipe; the top cap is arranged at the top end of the main pipe.

2. The air-mixing type mist and white remover according to claim 1, wherein: the main pipe is a cylindrical pipe, a connecting flange is arranged at the bottom end of the main pipe, and a supporting angle steel is arranged outside the top end of the main pipe and used for installing the top cap.

3. The air-mixing type mist and white remover according to claim 2, characterized in that: the top cap is a conical cap, and the diameter of the bottom surface of the top cap is larger than the outer diameter of the main pipe; the top cap is connected with the supporting angle steel by the inner surface of the side wall of the top cap.

4. The air-mixing type mist and white remover according to claim 1, wherein: the siphon comprises a straight line section and a reducing section, wherein the diameter of the reducing section is gradually reduced from bottom to top; each siphon is evenly arranged outside the main pipe, and the small-diameter end of the variable-diameter section of each siphon is communicated with the main pipe.

5. The air-mixing type mist and white remover according to claim 1, wherein: still include the guide plate, the guide plate connect in the main pipe, the tie point at top is higher than the summit of air conditioning entry, and the tie point of bottom is less than the nadir of air conditioning entry.

6. The air-mixing type mist and white remover according to claim 5, wherein: the guide plate is arranged obliquely, and the lower end of the guide plate faces to the axial center of the main pipe.

7. The utility model provides a tail gas absorption tower, includes the tower body, its characterized in that: the air mixing type de-misting and de-whitening device as claimed in any one of claims 1 to 6, which is connected to the tower body through the bottom end of the main pipe.

8. The tail gas absorber of claim 7, wherein: the tower body comprises a cylindrical section, a conical section and a butt flange which are sequentially arranged from bottom to top; the air mixing type demisting and white eliminating device is connected to the butt flange through a flange.