CN212632237U

CN212632237U - Acid gas absorption tower for producing sulfuric acid

Info

Publication number: CN212632237U
Application number: CN202020685842.6U
Authority: CN
Inventors: 陈景爱
Original assignee: Zhongxiang Dasheng Chemical Co ltd
Current assignee: Zhongxiang Dasheng Chemical Co ltd
Priority date: 2020-04-29
Filing date: 2020-04-29
Publication date: 2021-03-02
Anticipated expiration: 2030-04-29

Abstract

An acid gas absorption tower for producing sulfuric acid, comprising: the tower comprises a cylindrical tower shell, a distribution plate and a rotary disc, wherein the cylindrical tower shell is vertically arranged, the distribution plate is fixed in the tower shell, the rotary disc is rotatably arranged in the tower shell, the distribution plate is positioned above the rotary disc, and the distribution plate and the rotary disc divide an inner cavity of the tower shell into a spraying bin, a cooling bin and a collecting bin from top to bottom; a plurality of groups of liquid distribution holes are formed in the distribution plate and are correspondingly distributed on a plurality of concentric circles; a plurality of groups of liquid collecting holes corresponding to the plurality of groups of liquid distributing holes are formed in the rotary disc; an air inlet pipe is communicated with the collecting bin, and an air outlet pipe is communicated with the spraying bin; a spraying pipe is communicated with the spraying bin, and a liquid outlet pipe is communicated with the liquid collecting bin; the falling film tubes are vertical and can be rotatably arranged in the cooling bin along the central shaft of the falling film tubes; the upper end of the film falling pipe is correspondingly communicated with the liquid distribution hole, and the lower end of the film falling pipe is correspondingly communicated with the liquid collection hole.

Description

Acid gas absorption tower for producing sulfuric acid

Technical Field

The utility model relates to the technical field of chemical industry, concretely relates to sour gas absorption tower for producing sulphuric acid.

Background

Sulfuric acid is an important raw material for producing fertilizer, and sulfur concentrate is oxidized by a fluidized bed furnace, subjected to dust removal and defogging and heat exchange during production and then needs to be absorbed by an absorption tower. In the conventional absorption tower, an absorption liquid is mainly dropped in a falling film tube to form an absorption film, thereby absorbing an ascending acid gas. In such an acid gas absorption tower, since the absorption effect of the acid gas is limited, the acid gas is generally absorbed in series by the first absorption tower and the second absorption tower, which increases the equipment cost.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide an sour gas absorption tower for producing sulphuric acid to improve its absorption effect to sour gas.

The utility model provides a technical scheme that technical problem adopted is: an acid gas absorption tower for producing sulfuric acid, comprising:

the tower comprises a cylindrical tower shell, a distribution plate and a rotary disc, wherein the cylindrical tower shell is vertically arranged, the distribution plate is fixed in the tower shell, the rotary disc is rotatably arranged in the tower shell, the distribution plate is positioned above the rotary disc, and the distribution plate and the rotary disc divide an inner cavity of the tower shell into a spraying bin, a cooling bin and a collecting bin from top to bottom; a plurality of groups of liquid distribution holes are formed in the distribution plate, and the liquid distribution holes are correspondingly distributed on a plurality of concentric circles; a plurality of groups of liquid collecting holes corresponding to the plurality of groups of liquid distributing holes are formed in the rotary disc; an air inlet pipe is communicated with the collecting bin, and an air outlet pipe is communicated with the spraying bin; a spraying pipe is communicated with the spraying bin, and a liquid outlet pipe is communicated with the liquid collecting bin;

the falling film tubes are vertically arranged in the cooling bin in a rotatable manner along the central axis of the falling film tubes; the upper end of the film falling pipe is correspondingly communicated with the liquid distribution hole, and the lower end of the film falling pipe is correspondingly communicated with the liquid collection hole.

Preferably, the lower periphery of the liquid distribution hole protrudes downwards to form a positioning pipe, and the positioning pipe is movably sleeved at the upper end of the membrane descending pipe downwards.

Preferably, the acid gas absorption tower further comprises a support plate horizontally fixed in the cooling bin, and the falling film pipe is rotatably arranged on the support plate in a penetrating manner.

Preferably, the acid gas absorption tower further comprises a plurality of supporting conical cylinders which are in one-to-one correspondence and fixedly sleeved outside the falling film pipe, the bottoms of the supporting conical cylinders are conical, a plurality of conical holes are formed in the supporting plate, and the bottoms of the supporting conical cylinders are movably inserted into the corresponding conical holes downwards.

Preferably, the bottom of each film falling tube is provided with an external fluted disc, the upper end of the rotating disc protrudes upwards to form a plurality of circles of internal fluted discs which are concentrically arranged and correspond to the plurality of groups of film falling tubes, and the external fluted disc of each group of film falling tubes is meshed with the corresponding internal fluted disc; a motor shaft of a rotating motor is coaxially fixed with the turntable.

Preferably, a supporting ring is fixedly arranged on the inner wall of the tower shell, the turntable is rotatably supported on the supporting ring through a tapered roller bearing, an O-shaped sealing ring is arranged between one side of the inner periphery of the supporting ring and the turntable, and a Y-shaped sealing ring is arranged between one side of the inner periphery of the supporting ring and the turntable.

The utility model discloses an sour gas absorption tower for producing sulphuric acid, it falls the membrane pipe through vertical rotation, can prolong the film forming decay time of absorption liquid in falling the membrane pipe, improves the absorption effect to sour gas, only need to carry out once to sour gas absorb can.

Drawings

FIG. 1 is a schematic structural view of an acid gas absorption tower according to a preferred embodiment of the present invention;

FIG. 2 is an enlarged schematic view of detail A shown in FIG. 1;

FIG. 3 is an enlarged schematic view of detail B shown in FIG. 1;

Detailed Description

The technical solution of the present invention will be clearly and completely described with reference to the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Please refer to fig. 1 to fig. 3. In a preferred embodiment of the present invention, the acid gas absorption tower has a cylindrical tower shell 1, and the bottom of the tower shell 1 is provided with support legs 10. The tower shell 1 is vertically arranged, a distribution plate 2 is fixed in the tower shell, and a rotary disc 3 is rotatably arranged in the tower shell.

The distribution plate 2 is positioned above the rotary table 3, and the distribution plate 2 and the rotary table 3 divide the inner cavity of the tower shell 1 into a spraying bin, a cooling bin and a collecting bin from top to bottom. The distribution plate 2 is provided with a plurality of groups of liquid distribution holes 21. The liquid distribution holes 21 are correspondingly distributed on a plurality of concentric circles. The rotary plate 3 is provided with a plurality of groups of liquid collecting holes 31 corresponding to the plurality of groups of liquid distributing holes 21. An air inlet pipe 1a is communicated with the collecting bin, and an air outlet pipe 1b is communicated with the spraying bin. A spraying pipe 1c is communicated with the spraying bin and sprays the absorption liquid into the spraying bin, and a liquid outlet pipe 1d is communicated with the bottom of the liquid collecting bin.

The acid gas absorption tower for producing sulfuric acid of the present embodiment further includes a plurality of sets of membrane reduction tubes 4. The multiple groups of the film falling pipes 4 correspond to the multiple groups of the liquid distribution holes 21 and the multiple groups of the liquid collecting holes 31. The film falling pipe 4 is vertically and rotatably arranged in the cooling bin along the central shaft of the film falling pipe. The upper end of the film falling pipe 4 is correspondingly communicated with the liquid distribution hole 21, and the lower end of the film falling pipe is correspondingly communicated with the liquid collection hole 31.

The utility model discloses an sour gas absorption tower for producing sulphuric acid, it falls the membrane pipe through vertical rotation, can prolong the film forming decay time of absorption liquid in falling the membrane pipe, improves the absorption effect to sour gas to only need carry out once to sour gas and absorb can.

In order to make the falling film pipe 4 vertically rotatable around its central axis, it is preferable that the lower peripheral edge of the liquid distribution hole 21 is protruded downward to form a positioning pipe 22. The positioning tube 22 is movably sleeved at the upper end of the film falling tube 4 downwards. A support plate 5 is horizontally fixed in the cooling chamber. The film falling pipe 4 is rotatably arranged on the supporting plate 5 in a penetrating way.

In order to effectively support the falling film pipe, preferably, a support cone 41 is fixedly sleeved outside the falling film pipe 4 correspondingly, and the bottom of the support cone 41 is conical. A plurality of taper holes are arranged on the supporting plate 5. The bottom of the supporting cone 41 is downwards movably inserted into the corresponding taper hole.

In order to drive the falling film tube 4 to rotate, the bottom of the falling film tube 4 is preferably provided with an external toothed disc 42. The upper end of the rotary disc 3 protrudes upwards to form a plurality of circles of inner toothed discs 32 which are concentrically arranged and correspond to the plurality of groups of the film falling tubes 4. The outer toothed disc 42 of each group of the film falling pipes 4 is meshed with the corresponding inner toothed disc 32. A motor shaft of a rotating motor 7 is coaxially fixed with the turntable 3.

A supporting ring 6 is fixedly arranged on the inner wall of the tower shell 1. The turntable 3 is rotatably supported on the support ring 6 by a tapered roller bearing 61. An O-shaped sealing ring 63 is arranged between the inner circumference side of the supporting ring 6 and the rotary disc 3. A Y-shaped sealing ring 62 is arranged between one side of the inner periphery of the supporting ring 6 and the rotary disc 3.

Other parts not described in detail in the present invention belong to the prior art, and are not described herein again.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. An acid gas absorption tower for producing sulfuric acid, comprising:

the tower comprises a cylindrical tower shell (1) which is vertically arranged, a distribution plate (2) which is fixed in the tower shell (1) and a rotary disc (3) which is rotatably arranged in the tower shell (1), wherein the distribution plate (2) is positioned above the rotary disc (3), and the distribution plate (2) and the rotary disc (3) divide an inner cavity of the tower shell (1) into a spraying bin, a cooling bin and a collecting bin from top to bottom; a plurality of groups of liquid distribution holes (21) are formed in the distribution plate (2), and the plurality of groups of liquid distribution holes (21) are correspondingly distributed on a plurality of concentric circles; a plurality of groups of liquid collecting holes (31) corresponding to the plurality of groups of liquid distributing holes (21) are formed in the rotary disc (3); an air inlet pipe (1a) is communicated with the collecting bin, and an air outlet pipe (1b) is communicated with the spraying bin; a spraying pipe (1c) is communicated with the spraying bin, and a liquid outlet pipe (1d) is communicated with the liquid collecting bin;

the film falling pipes (4) correspond to the liquid distribution holes (21) and the liquid collection holes (31), and the film falling pipes (4) are vertically arranged in the cooling bin in a rotatable manner along the central axis of the film falling pipes; the upper end of the film falling pipe (4) is correspondingly communicated with the liquid distribution hole (21), and the lower end of the film falling pipe is correspondingly communicated with the liquid collection hole (31).

2. The acid gas absorption tower for producing sulfuric acid according to claim 1, wherein the lower periphery of the liquid distribution hole (21) protrudes downward to form a positioning pipe (22), and the positioning pipe (22) is movably sleeved on the upper end of the membrane lowering pipe (4) downward.

3. The acid gas absorption tower for producing sulfuric acid according to claim 1, further comprising a support plate (5) horizontally fixed in the cooling chamber, wherein the film falling pipe (4) is rotatably inserted through the support plate (5).

4. The acid gas absorption tower for producing sulfuric acid according to claim 3, further comprising a plurality of supporting conical cylinders (41) which are in one-to-one correspondence and fixedly sleeved outside the membrane falling pipe (4), wherein the bottoms of the supporting conical cylinders (41) are tapered, a plurality of conical holes are formed in the supporting plate (5), and the bottoms of the supporting conical cylinders (41) are movably inserted into the corresponding conical holes downward.

5. The acid gas absorption tower for producing sulfuric acid according to claim 1, wherein an outer toothed disc (42) is arranged at the bottom of the membrane lowering tubes (4), the upper end of the rotating disc (3) protrudes upwards to form a plurality of circles of inner toothed discs (32) concentrically arranged corresponding to the plurality of groups of membrane lowering tubes (4), and the outer toothed disc (42) of each group of membrane lowering tubes (4) is meshed with the corresponding inner toothed disc (32); the motor shaft of a rotating motor (7) is coaxially fixed with the turntable (3).

6. The acid gas absorption tower for producing sulfuric acid according to claim 5, wherein a support ring (6) is fixedly disposed on the inner wall of the tower shell (1), the turntable (3) is rotatably supported on the support ring (6) through a tapered roller bearing (61), an O-shaped seal ring (63) is disposed between the inner peripheral side of the support ring (6) and the turntable (3), and a Y-shaped seal ring (62) is disposed between the inner peripheral side of the support ring (6) and the turntable (3).