CN212881841U - Lining tetrafluoro alkaline washing tower - Google Patents

Abstract

The utility model provides a lining tetrafluoro alkaline washing tower, it includes: a tower bottom assembly; the spraying assembly comprises a first shell arranged above the tower bottom shell, a spraying alkali liquor inlet pipe arranged on the first shell and extending into the first shell, and a rotary spray head arranged on the spraying alkali liquor inlet pipe and positioned in the first shell; a variable diameter component; an upper end enclosure; the tower bottom shell, the lower end enclosure, the first shell, the reducing shell and the upper end enclosure are made of polytetrafluoroethylene-lined materials independently. Effectively prevent the corrosion of the acid gas to the tower body and prolong the service life of the tower body.

Description

Lining tetrafluoro alkaline washing tower

Technical Field

The utility model relates to a helium recovery unit especially relates to a lining tetrafluoro alkaline washing tower.

Background

Helium is inert gas, is colorless, tasteless, nontoxic and nonflammable at normal pressure and temperature; the material with the lowest critical temperature is found by human beings, is dark yellow when discharged at low pressure, is the most difficult to liquefy, is extremely inactive, cannot be combusted, is not flame-retardant, and cannot be solidified at absolute zero temperature under normal pressure. From such properties of helium, helium is very widely used in modern industry. During the process of drawing the optical fiber by the optical rod, the optical rod can be prevented from being oxidized by utilizing the inertia characteristic of helium. At present, most of helium is discharged to the air, so that the helium cannot be recycled, and great waste is caused.

The used helium gas contains a small amount of impurity gases (such as acid gases and the like), and the used helium gas needs to be subjected to alkali washing in the recovery process to remove the acid gases; however, the existing alkaline washing tower has a simple structure, and the material of the alkaline washing tower is usually PVC or glass fiber reinforced plastic, which is easy to age or corrode.

Disclosure of Invention

The utility model aims at providing a lining tetrafluoro alkaline washing tower in order to solve the shortcoming that exists among the prior art.

The utility model aims at providing a lining tetrafluoro alkaline washing tower in order to solve the shortcoming that exists among the prior art, it includes:

the tower bottom assembly comprises a tower bottom shell, a lower seal head formed at the bottom of the tower bottom shell, a plurality of support legs fixed at the bottom of the lower seal head and a first alkali liquor outlet formed at the bottom of the lower seal head;

the spraying assembly comprises a first shell arranged above the tower bottom shell, a spraying alkali liquor inlet pipe arranged on the first shell and extending into the first shell, a rotary spray head arranged on the spraying alkali liquor inlet pipe and positioned in the first shell, an alkali liquor external connecting pipe arranged at the outer end part of the spraying alkali liquor inlet pipe, first filler filled in the first shell and positioned below the rotary spray head, at least one first filler inlet and outlet formed on the outer wall of the first shell and corresponding to the first filler, and a wire mesh demister arranged in the first shell and positioned above the rotary spray head, wherein the diameter of the first shell is smaller than that of the tower bottom shell;

the reducing assembly comprises a reducing shell, an air inlet pipe, a temperature measuring port and a pH meter port, wherein the reducing shell is connected with the tower bottom shell and the first shell;

the upper sealing head is arranged at the top of the first shell, and an air outlet is formed in the top of the upper sealing head;

the tower bottom shell, the lower end enclosure, the first shell, the reducing shell and the upper end enclosure are made of polytetrafluoroethylene-lined materials independently.

Preferably, the tower bottom assembly further comprises a plurality of liquid level meter ports formed on the outer wall of the tower bottom shell and arranged at intervals up and down.

Further, the tower bottom assembly further comprises a second lye outlet formed on the outer wall of the tower bottom shell and a third lye outlet formed on the outer wall of the tower bottom shell and positioned above the second lye outlet.

Further, the spraying assembly also comprises a porous plate arranged at the bottom of the first shell.

Optimally, the other end of the air inlet pipe is bent towards the direction of the first alkali liquor outlet.

Optimally, the packing assembly comprises a second shell installed between the reducing shell and the first shell, a support ring arranged on the inner wall of the second shell, a second packing arranged on the support ring and positioned in the second shell, and at least one second packing inlet and outlet formed on the outer wall of the second shell and corresponding to the second packing.

Furthermore, the spraying assembly further comprises a first alkali liquor backflow port formed in the lower portion of the outer wall of the first shell, and the packing assembly further comprises a second alkali liquor backflow port formed in the lower portion of the outer wall of the second shell.

Furthermore, the tower bottom shell further comprises a support body arranged outside the tower bottom shell, the reducing shell, the second shell and the first shell.

Compared with the prior art, the beneficial effects of the utility model are that: the tetrafluoro-lined alkaline washing tower can effectively carry out spraying alkaline washing on the introduced gas by matching the tower bottom assembly, the spraying assembly, the reducing assembly, the upper end enclosure and the like with a specific structure; and the main structure adopts the material of inside lining polytetrafluoroethylene, effectively prevents the corruption of acid gas to the tower body, and can improve its life.

Drawings

Fig. 1 is a schematic diagram of the structure of a tetrafluoro-lined caustic tower according to the present invention.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents and other technical solutions without departing from the spirit and scope of the invention.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in a generic and descriptive sense only and not for purposes of limitation, as the terms are used in the description to indicate that the referenced device or element must have the specified orientation, be constructed and operated in the specified orientation, and not for the purpose of limitation.

It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.

The tetrafluoro-lined caustic tower shown in figure 1 mainly comprises a tower bottom assembly 1, a reducing assembly 2, a spraying assembly 4, an upper seal head 5 and the like.

The tower bottom assembly 1 comprises a tower bottom shell 11, a lower seal head 12 formed at the bottom of the tower bottom shell 11 (the lower seal head 12 is hermetically connected with the tower bottom shell 11), a plurality of support legs 13 fixed at the bottom of the lower seal head 12 and a first alkali liquor outlet 14 formed at the bottom of the lower seal head 12; the tower bottom shell 11 is made of a material lined with polytetrafluoroethylene, such as a steel plate lined with polytetrafluoroethylene.

The spraying component 4 comprises a first shell 41 arranged above the tower bottom shell 11 (in this embodiment, the axial lines of the first shell 41 and the tower bottom shell 11 are coincident, the diameter of the first shell 41 is smaller than that of the tower bottom shell 11), a spraying alkali liquor inlet pipe 43 arranged on the first shell 41 and extending into the first shell 41, a plurality of rotary spray heads 45 (the rotary spray heads 45 are communicated with the spraying alkali liquor inlet pipe 43) arranged on the spraying alkali liquor inlet pipe 43 and positioned in the first shell 41, an alkali liquor outer pipe 44 arranged at the outer end part of the spraying alkali liquor inlet pipe 43 (the alkali liquor outer pipe 44 is also arranged on the outer wall of the first shell 41 to ensure sealing), a first filler 47 filled in the first shell 41 and positioned below the rotary spray heads 45 (a grating support ring can be arranged on the inner wall of the first shell 41, and a grating plate is arranged on the grating support ring for filling the filler; the same below), At least one first filler inlet/outlet 48 formed on the outer wall of the first housing 41 and corresponding to the first filler 47 (in this embodiment, two first filler inlet/outlets 48 are provided on the outer wall of the first housing 41 at intervals up and down), and a wire mesh demister 40 installed in the first housing 41 above the rotary spray head 45 (a wire mesh demister strip may be installed on the inner wall of the first housing 41 to facilitate installation of the wire mesh demister 40). The first housing 41 and the grid support ring are made of teflon-lined materials, such as teflon-lined steel plates; and the spraying alkali liquor inlet pipe 43, the rotary spray nozzle 45, the silk screen demister 40, the silk screen demister clamping strip and the like are made of PP materials generally.

The reducing assembly 2 comprises a reducing shell 21 (connected by a flange seal) connected with the tower bottom shell 11 and the first shell 41, an air inlet pipe (22) with one end positioned outside the reducing shell 21 and the other end extending into the reducing shell 21, and a temperature measuring port and a pH meter port formed on the reducing shell 21. The reducing shell 21 is made of a material lined with polytetrafluoroethylene, such as a steel plate lined with polytetrafluoroethylene.

The upper end enclosure 5 is installed on the top of the first housing 41, and the top thereof is provided with an air outlet 51, which is also made of a material lined with polytetrafluoroethylene, such as a steel plate lined with polytetrafluoroethylene.

In this embodiment, the tower bottom assembly 1 further comprises a plurality of liquid level meter ports 17 formed on the outer wall of the tower bottom shell 11 and arranged at intervals up and down. The bottom assembly 1 further comprises a second lye outlet 15 formed on the outer wall of the bottom shell 11 and a third lye outlet 16 formed on the outer wall of the bottom shell 11 above the second lye outlet 15. The shower assembly 4 further includes a perforated plate 42 mounted at the bottom of the first housing 41 to be sealingly connected to the underlying structure through the perforated plate 42. The other end of the air inlet pipe 22 is bent towards the direction of the first lye outlet 14.

In this embodiment, the tetrafluoro alkali washing tower further includes a packing assembly 3, where the packing assembly 3 includes a second housing 31 (the second housing 31 is made of a material lined with teflon, such as a steel plate lined with teflon, etc.), which is installed between the reducer housing 21 and the first housing 41, a support ring 32 (also made of a material lined with teflon) which is disposed on an inner wall of the second housing 31, a second packing 33 which is disposed on the support ring 32 and located inside the second housing 31, and at least one second packing inlet/outlet 35 (in this embodiment, two second packing inlet/outlets 35 are formed on an outer wall of the second housing 31 and correspond to the second packing 33, and the second packing inlet/outlet 35 is vertically spaced from the outer wall of the second housing 31). The spraying assembly 4 further comprises a first lye return opening 46 formed in the lower portion of the outer wall of the first housing 41, and the packing assembly 3 further comprises a second lye return opening 34 formed in the lower portion of the outer wall of the second housing 31.

In this embodiment, the tetrafluoro alkali washing tower further includes a bracket body 6 installed outside the tower bottom shell 11, the reducer shell 21, the second shell 31 and the first shell 41.

It will be understood by those skilled in the art that the embodiments of the present invention as described above and shown in the drawings are given by way of example only and are not limiting of the present invention. The objects of the present invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the embodiments without departing from the principles, embodiments of the present invention may have any deformation or modification.

Claims (8)

1. A tetrafluoro-lined caustic tower, comprising:

the tower bottom assembly (1) comprises a tower bottom shell (11), a lower sealing head (12) formed at the bottom of the tower bottom shell (11), a plurality of supporting legs (13) fixed at the bottom of the lower sealing head (12) and a first alkali liquor outlet (14) formed at the bottom of the lower sealing head (12);

a spraying assembly (4), wherein the spraying assembly (4) comprises a first shell (41) arranged above the tower bottom shell (11), a spraying alkali liquor inlet pipe (43) arranged on the first shell (41) and extending into the first shell, a rotary spray head (45) arranged on the spraying alkali liquor inlet pipe (43) and positioned in the first shell (41), an alkali liquor outer connecting pipe (44) arranged at the outer end part of the spraying alkali liquor inlet pipe (43), first filler (47) filled in the first shell (41) and positioned below the rotary spray head (45), at least one first filler inlet and outlet (48) formed on the outer wall of the first shell (41) and corresponding to the first filler (47), and a wire mesh demister (40) arranged in the first shell (41) and positioned above the rotary spray head (45), the diameter of the first shell (41) is smaller than the diameter of the bottom shell (11);

the reducing assembly (2) comprises a reducing shell (21) connected with the tower bottom shell (11) and the first shell (41), an air inlet pipe (22) with one end positioned outside the reducing shell (21) and the other end extending into the reducing shell (21), and a temperature measuring port and a pH meter port formed on the reducing shell (21);

the upper sealing head (5) is mounted at the top of the first shell (41), and an air outlet (51) is formed in the top of the upper sealing head (5);

the tower bottom shell (11), the lower seal head (12), the first shell (41), the reducing shell (21) and the upper seal head (5) are made of polytetrafluoroethylene-lined materials independently.

2. The lined tetrafluorocaustic tower of claim 1, wherein: the tower bottom assembly (1) further comprises a plurality of liquid level meter ports (17) which are formed in the outer wall of the tower bottom shell (11) and are arranged at intervals up and down.

3. The lined tetrafluorocaustic tower as claimed in claim 1 or 2, characterized in that: the tower bottom assembly (1) further comprises a second lye outlet (15) formed on the outer wall of the tower bottom shell (11) and a third lye outlet (16) formed on the outer wall of the tower bottom shell (11) above the second lye outlet (15).

4. The lined tetrafluorocaustic tower of claim 1, wherein: the spray assembly (4) further comprises a porous plate (42) mounted at the bottom of the first housing (41).

5. The lined tetrafluorocaustic tower of claim 1, wherein: the other end of the air inlet pipe (22) is bent towards the direction of the first alkali liquor outlet (14).

6. The lined tetrafluorocaustic tower of claim 1, wherein: it still includes packing assembly (3), packing assembly (3) are including installing second casing (31) between reducing casing (21) and first casing (41), setting are in support ring (32) on second casing (31) inner wall, setting are in just be located on support ring (32) second packing (33) in second casing (31) and form on second casing (31) outer wall and with at least one second that second packing (33) correspond is imported and exported (35).

7. The lined tetrafluorocaustic tower of claim 6, wherein: the spraying assembly (4) further comprises a first lye return opening (46) formed in the lower portion of the outer wall of the first shell (41), and the packing assembly (3) further comprises a second lye return opening (34) formed in the lower portion of the outer wall of the second shell (31).

8. The lined tetrafluorocaustic tower of claim 6, wherein: the tower bottom variable diameter shell is characterized by further comprising a support body (6) arranged outside the tower bottom shell (11), the variable diameter shell (21), the second shell (31) and the first shell (41).

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