Packed tower for flue gas purification

Abstract

The utility model relates to the technical field of packed towers, and discloses a packed tower for flue gas purification, which comprises a packed tower shell, and a top plate, a first support grid plate and a second support grid plate are sequentially and fixedly mounted in the packed tower shell from top to bottom. The same spiral separation blade is fixedly mounted between the inner wall of the packed tower shell and the top plate as well as between the first supporting grid plate and the second supporting grid plate; according to the flue gas purification device, by starting the exhaust fan, flue gas after primary purification is pumped to the backflow cavity through the gas return pipe and then enters the second spiral packing cavity, and the flue gas after primary purification is subjected to secondary contact reaction with purification liquid in the second packing layer in a spiral manner, so that the cyclic secondary purification effect on the flue gas is realized; according to the packed tower disclosed by the invention, the flue gas can be thoroughly purified, the thoroughly purified gas can be conveniently discharged to the outside through the round opening and the exhaust pipe, and the flue gas purification efficiency is improved by the packed tower in the scheme.

Description

TECHNICAL FIELD

[0001] The utility model relates to a packing tower technical field especially relates to a packing tower for flue gas purification. BACKGROUND

[0002] The packing tower is a kind of common equipment for gas-liquid or liquid-liquid mass transfer, is widely used in chemical industry, petrochemical, environmental protection, pharmacy and other fields, is mainly used for the contact, reaction, separation and absorption of gas and liquid process;In flue gas purification, packing tower carries out the absorption, oxidation, reaction or separation of pollutant by the way of gas-liquid contact.

[0003] The conventional packing tower for flue gas purification is provided with packing layer in packing tower, flue gas enters packing tower from tower bottom, flows through packing layer in packing tower, and at the same time, purification liquid flows through packing layer from tower top, so that purification liquid and flue gas contact and react, thereby removing pollutants in flue gas, and the treated flue gas is discharged to outside of packing tower;But this way of purification from bottom to top in packing tower can only realize single contact reaction of flue gas flowing through packing layer, and part of flue gas can not be completely purified, so a packing tower for flue gas purification is provided to solve the above problems. SUMMARY

[0004] In view of the deficiencies of prior art, the utility model provides a packing tower for flue gas purification to solve the above problems.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A packing tower for flue gas purification, comprising a packing tower shell, a top plate, a first support grid plate and a second support grid plate are fixedly installed in the packing tower shell in sequence from top to bottom, a same spiral separation vane is fixedly installed between the inner wall of the packing tower shell and the top plate, the first support grid plate and the second support grid plate, the top plate, the first support grid plate, the second support grid plate in the packing tower shell are respectively separated by the spiral separation vane to provide an air inlet cavity, a first spiral packing cavity, a reflux cavity and a second spiral packing cavity, the first spiral packing cavity and the reflux cavity of the packing tower shell are connected by a reflux air induction mechanism, a purification packing mechanism for the spiral separation vane is arranged in the packing tower shell, and a liquid supply mechanism is arranged on the bottom side of the top plate in the packing tower shell.

[0007] Preferably, the reflux air induction mechanism comprises a return air pipe and an exhaust fan, the first spiral packing cavity and the reflux cavity of the packing tower shell are communicated by a same return air pipe, and the return air pipe is provided with an exhaust fan;By starting the exhaust fan, the flue gas after primary purification is pumped into the reflux cavity through the return air pipe and then into the second spiral packing cavity, so as to facilitate secondary purification operation.

[0008] Preferably, the purification packing mechanism comprises a first packing layer and a second packing layer, the first packing layer is arranged in the first spiral packing cavity of the packing tower shell, and the second packing layer is arranged in the second spiral packing cavity of the packing tower shell.

[0009] Preferably, the liquid supply mechanism comprises a water distribution pipe, a water spraying head and a liquid conveying pipe, the water distribution pipe is arranged at the bottom side of the top plate in the packing tower shell, the water distribution pipe is provided with a plurality of water spraying heads in the first spiral packing cavity and the second spiral packing cavity, one end of the liquid conveying pipe is connected to the water distribution pipe, and the other end of the liquid conveying pipe extends out of the packing tower shell.

[0010] Preferably, the packing tower shell is provided with a smoke inlet pipe on one side of the air inlet cavity; the smoke inlet pipe facilitates the entry of flue gas into the air inlet cavity of the packing tower shell for flue gas purification operation.

[0011] Preferably, a round opening is arranged on the top plate at the top of the second spiral packing cavity in the packing tower shell, and an exhaust pipe is arranged at the top end of the packing tower shell; the round opening and the exhaust pipe facilitate the discharge of completely purified gas to the outside.

[0012] Preferably, the first liquid cavity and the second liquid cavity are respectively arranged in the packing tower shell by spiral separation blades at the bottom of the second support grid plate, the first liquid cavity is communicated with the air inlet cavity, the packing tower shell is provided with a first liquid outlet pipe on one side of the first liquid cavity, the second liquid cavity is communicated with the reflux cavity, and the packing tower shell is provided with a second liquid outlet pipe on one side of the second liquid cavity; the first liquid outlet pipe facilitates the discharge of wastewater in the first liquid cavity, and the second liquid outlet pipe facilitates the discharge of wastewater in the second liquid cavity.

[0013] The beneficial effects of the utility model are as follows: when flue gas is purified, the flue gas enters the first packing layer in the first spiral packing cavity from the bottom to the top through the smoke inlet pipe and the air inlet cavity, the flue gas is initially contacted with the purification liquid in the first packing layer in a spiral manner, the pollutants in the flue gas are removed, the flue gas is initially purified, then the initially purified flue gas is sent to the reflux cavity through the air return pipe by starting the exhaust fan and then enters the second spiral packing cavity, the initially purified flue gas is secondarily contacted with the purification liquid in the second packing layer in a spiral manner, thereby realizing the cyclic secondary purification effect of the flue gas, the flue gas can be completely purified, the completely purified gas is discharged to the outside through the round opening and the exhaust pipe, and the packing tower in the case improves the flue gas purification efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the structure schematic view of the utility model three-dimensional partial section;

[0015] Figure 2 It is the structure schematic view of the utility model explosion perspective side section;

[0016] Figure 3 It is the structure schematic view of the utility model spiral separation vane perspective;

[0017] Figure 4 It is the structure schematic view of the utility model Figure 3 A portion of the structure schematic view of the utility model.

[0018] In the drawing: 1, packing tower shell; 2, top plate; 3, first support grid plate; 4, second support grid plate; 5, spiral separation vane; 6, air inlet cavity; 7, first spiral packing cavity; 8, backflow cavity; 9, second spiral packing cavity; 10, back air pipe; 11, exhaust fan; 12, first packing layer; 13, second packing layer; 14, water distribution pipe; 15, water injection head; 16, liquid conveying pipe; 17, smoke inlet pipe; 18, round port; 19, exhaust pipe; 20, first liquid cavity; 21, first liquid outlet pipe; 22, second liquid cavity; 23, second liquid outlet pipe. Specific implementation

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0020] Referring to Figures 1-4 A packing tower for flue gas purification, comprising a packing tower shell 1, a top plate 2, a first support grid plate 3 and a second support grid plate 4 are sequentially and fixedly installed in the packing tower shell 1 from top to bottom, a same spiral separation vane 5 is fixedly installed between the inner wall of the packing tower shell 1 and the top plate 2, the first support grid plate 3 and the second support grid plate 4, the top plate 2, the first support grid plate 3, the second support grid plate 4 in the packing tower shell 1 are respectively separated by the spiral separation vane 5 to form an air inlet cavity 6, a first spiral packing cavity 7, a backflow cavity 8 and a second spiral packing cavity 9, the first spiral packing cavity 7 and the backflow cavity 8 of the packing tower shell 1 are connected in communication through a backflow air guide mechanism, a purification packing mechanism for the spiral separation vane 5 is arranged in the packing tower shell 1, and a liquid supply mechanism is arranged on the bottom side of the top plate 2 in the packing tower shell 1.

[0021] Further, the backflow air blower mechanism comprises a backflow pipe 10 and an exhaust fan 11, the first spiral packing chamber 7 of the packing tower shell 1 is communicated with the backflow chamber 8 through the same backflow pipe 10, and the backflow pipe 10 is provided with the exhaust fan 11; by starting the exhaust fan 11, the flue gas after the primary purification is pumped into the backflow chamber 8 through the backflow pipe 10 and then into the second spiral packing chamber 9, so that the secondary purification operation is facilitated.

[0022] Specifically, the purification packing mechanism comprises a first packing layer 12 and a second packing layer 13, the first packing layer 12 is arranged in the first spiral packing chamber 7 of the packing tower shell 1, and the second packing layer 13 is arranged in the second spiral packing chamber 9 of the packing tower shell 1; and the first packing layer 12 and the second packing layer 13 are both arranged in a spiral structure.

[0023] Specifically, the liquid supply mechanism comprises a water distribution pipe 14, a water spraying head 15 and a liquid supply pipe 16, the water distribution pipe 14 is arranged at the bottom side of the top plate 2 in the packing tower shell 1, a plurality of water spraying heads 15 are arranged in the first spiral packing chamber 7 and the second spiral packing chamber 9 of the water distribution pipe 14, one end of the liquid supply pipe 16 is connected to the water distribution pipe 14, and the other end of the liquid supply pipe 16 extends out of the packing tower shell 1; the purification liquid is conveniently supplied to the water distribution pipe 14 through the liquid supply pipe 16, and is sprayed on the first packing layer 12 and the second packing layer 13 through the plurality of water spraying heads 15 at the bottom of the water distribution pipe 14.

[0024] Further, the packing tower shell 1 is provided with an air inlet pipe 17 on one side of the air inlet chamber 6; the flue gas is conveniently introduced into the air inlet chamber 6 of the packing tower shell 1 through the air inlet pipe 17 for flue gas purification.

[0025] Specifically, the packing tower shell 1 is provided with a circular opening 18 on the top plate 2 at the top of the second spiral packing chamber 9, and the packing tower shell 1 is provided with an exhaust pipe 19 at the top end; the completely purified gas is conveniently discharged to the outside through the circular opening 18 and the exhaust pipe 19.

[0026] Specifically, the packing tower shell 1 is provided with a first liquid chamber 20 and a second liquid chamber 22 which are respectively separated by the spiral separation blade 5 at the bottom of the second support grid plate 4, the first liquid chamber 20 is communicated with the air inlet chamber 6, the packing tower shell 1 is provided with a first liquid outlet pipe 21 on one side of the first liquid chamber 20, the second liquid chamber 22 is communicated with the backflow chamber 8, and the packing tower shell 1 is provided with a second liquid outlet pipe 23 on one side of the second liquid chamber 22; the waste water in the first liquid chamber 20 is conveniently discharged through the first liquid outlet pipe 21, and the waste water in the second liquid chamber 22 is conveniently discharged through the second liquid outlet pipe 23.

[0027] In use: in the process of purifying flue gas, flue gas enters into the first packing layer 12 of the first spiral packing cavity 7 from the bottom to the top through the flue gas inlet pipe 17 and the gas inlet cavity 6, while the purification liquid is delivered into the water distribution pipe 14 through the liquid delivery pipe 16, and is sprayed onto the first packing layer 12 of the first spiral packing cavity 7 and the second packing layer 13 of the second spiral packing cavity 9 through the water spray heads 15 at the bottom of the water distribution pipe 14, the flue gas in the first spiral packing cavity 7 is in contact with the purification liquid in the first packing layer 12 in a spiral manner to achieve the primary purification of the flue gas, and the flue gas after the primary purification flows to the top of the first spiral packing cavity 7 and is delivered into the reflux cavity 8 through the air return pipe 10 and the exhaust fan 11, and then enters into the second spiral packing cavity 9, the flue gas after the primary purification is in contact with the purification liquid in the second packing layer 13 in a spiral manner to achieve the secondary purification of the flue gas, and the flue gas after the secondary purification flows to the top of the second spiral packing cavity 9 and is discharged outside the packing tower shell 1 through the circular port 18 and the air outlet pipe 19.

[0028] In summary, when purifying flue gas, the flue gas enters into the first packing layer 12 of the first spiral packing cavity 7 from the bottom to the top through the flue gas inlet pipe 17 and the gas inlet cavity 6, the flue gas in the first packing layer 12 is in contact with the purification liquid in a spiral manner to achieve the primary purification of the flue gas, then the flue gas after the primary purification is delivered into the reflux cavity 8 through the air return pipe 10 and the exhaust fan 11, and then enters into the second spiral packing cavity 9, the flue gas after the primary purification is in contact with the purification liquid in the second packing layer 13 in a spiral manner to achieve the secondary purification of the flue gas, and the flue gas after the secondary purification is discharged outside through the circular port 18 and the air outlet pipe 19, and the packing tower in the present case improves the efficiency of purifying flue gas.

[0029] It should be noted that the relational terms herein such as first and second and the like are used only to differentiate one entity or operation from another, and do not necessarily require or imply that any such actual relationship or order exists between or among the entities or operations. Also, the terms "comprising", "containing", or any other similar term are intended to encompass non-exclusive inclusion, so that a process, method, article, or apparatus that comprises a list of elements does not necessarily include those elements only, but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0030] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A packed column for flue gas cleaning, comprising a packed column housing (1), characterized in that The filler tower shell (1) is sequentially fixed and installed from top to bottom with a top plate (2), a first support grid plate (3) and a second support grid plate (4), a spiral separation blade (5) is fixedly installed between the inner wall of the filler tower shell (1) and the top plate (2), the first support grid plate (3) and the second support grid plate (4), the top plate (2), the first support grid plate (3) and the second support grid plate (4) in the filler tower shell (1) are respectively separated by the spiral separation blade (5) to provide an air inlet cavity (6), a first spiral filler cavity (7), a reflux cavity (8) and a second spiral filler cavity (9), the first spiral filler cavity (7) and the reflux cavity (8) of the filler tower shell (1) are connected by a reflux air guide mechanism, the filler tower shell (1) is provided with a purification filler mechanism for the spiral separation blade (5), and the bottom side of the top plate (2) in the filler tower shell (1) is provided with a liquid supply mechanism.

2. A packed column for flue gas cleaning according to claim 1, characterised in that The reflux air guide mechanism comprises a return air pipe (10) and an exhaust fan (11), and the first spiral filler cavity (7) and the reflux cavity (8) of the filler tower shell (1) are communicated by the same return air pipe (10), and the return air pipe (10) is provided with the exhaust fan (11).

3. A packed column for flue gas cleaning according to claim 2, characterised in that The purification filler mechanism comprises a first filler layer (12) and a second filler layer (13), the first spiral filler cavity (7) of the filler tower shell (1) is filled with the first filler layer (12), and the second spiral filler cavity (9) of the filler tower shell (1) is filled with the second filler layer (13).

4. A packed column for flue gas cleaning according to claim 3, characterised in that The liquid supply mechanism comprises a water distribution pipe (14), a water jet head (15) and a liquid conveying pipe (16), the bottom side of the top plate (2) in the filler tower shell (1) is provided with the water distribution pipe (14), a plurality of water jet heads (15) are arranged in the first spiral filler cavity (7) and the second spiral filler cavity (9) of the water distribution pipe (14), one end of the water distribution pipe (14) is connected with the liquid conveying pipe (16), and the other end of the liquid conveying pipe (16) extends out of the filler tower shell (1).

5. A packed column for flue gas cleaning according to claim 1, characterized in that The filler tower shell (1) is provided with a smoke inlet pipe (17) on one side of the air inlet cavity (6).

6. A packed column for flue gas cleaning according to claim 4, characterised in that A circular opening (18) is formed in the top plate (2) at the top of the second spiral filler cavity (9) in the filler tower shell (1), and an exhaust pipe (19) is arranged at the top end of the filler tower shell (1).

7. A packed column for flue gas cleaning according to claim 6, characterised in that The first liquid cavity (20) and the second liquid cavity (22) are respectively separated by the spiral separation blade (5) at the bottom of the second support grid plate (4) in the filler tower shell (1), the first liquid cavity (20) is communicated with the air inlet cavity (6), the first liquid outlet pipe (21) is arranged on one side of the first liquid cavity (20) of the filler tower shell (1), the second liquid cavity (22) is communicated with the reflux cavity (8), and the second liquid outlet pipe (23) is arranged on one side of the second liquid cavity (22) of the filler tower shell (1).

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