A spray absorption treatment equipment for distillation tower

Abstract

The invention discloses a spray absorption treatment device supporting a distillation tower, which belongs to the technical field of sewage treatment. The device comprises two packing plates positioned one above and one below in the distillation tower, a spray water distributor positioned on the inner wall of the distillation tower is arranged above the packing plate in the upper position, and a diversion release module is arranged above the two packing plates. In the invention, sewage uniformly enters the interior of a central pipe column, and is dispersedly released from different areas in a packing layer by a plurality of annularly distributed angular release pipe columns, while extending the release path of the sewage and slowing down the flow rate and flow rate. A gas planning and guiding module guides part of the reaction gas to enter the interior of two conical merging buckets in turn, allowing the reaction gas to contact the sewage in advance in the conical merging bucket to effectively carry out a round of sewage pretreatment, and then release into the packing for re-absorption treatment after the contact treatment time is increased, thereby increasing the contact treatment time between the sewage and the reaction gas and improving the spray absorption effect of the distillation tower.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, and in particular to a spray absorption treatment device supporting a distillation tower. Background Art

[0002] The packed distillation tower provides contact reaction space for sewage and reaction gas through the packing layered up and down inside. The sewage is sprayed directly onto the packing from the liquid distributor in the distillation tower and flows down along the surface of the packing. The reaction gas is fed in from the bottom of the tower and continuously passes through the gaps of the packing layer in countercurrent with the sewage. The gas-liquid two-phase close contact is carried out on the surface of the packing for mass transfer and absorption treatment. The sewage moves inside the packing at a certain speed and directly contacts the reaction gas fed from the tower body. The sewage and the reaction gas only contact and react in the packing space where the packing is located, resulting in insufficient contact rate and contact reaction time between the sewage and the reaction gas, thereby affecting the reaction absorption effect. At the same time, the packing provides a contact reaction area for sewage and reaction gas for a long time, and the reaction residues on the surface of the packing are easy to cause the gaps in the packing layer to change. It is impossible to carry out contact mixing treatment and dispersion and slow release of sewage and reaction gas in the process of absorbing and treating sewage, and it is impossible to process the packing from the tower to control the gaps in the packing layer, which affects the effect of spraying and absorbing sewage in the distillation tower and affects the operation efficiency. Summary of the invention

[0003] In order to overcome the above-mentioned defects of the prior art, the present invention provides a spray absorption treatment equipment for a distillation tower. A diversion release module is set to collect and guide the sewage released by the spray water distributor, so that the sewage enters the center column uniformly, and is dispersedly released from different areas in the packing layer by a number of annularly distributed angular release columns, while extending the release path of the sewage and slowing down the flow rate and flow rate. The gas planning and guiding module guides part of the reaction gas to enter the two conical converging buckets in turn, so that the reaction gas pre-contacts the sewage in the conical converging bucket to effectively perform a round of sewage pretreatment, and releases it into the packing for re-absorption treatment after increasing the contact treatment time, thereby increasing the contact treatment time between the sewage and the reaction gas. The packing impact module guides the flushing water to be released from different directions inside the packing, and the packing is impacted from the inside to control the gaps in the packing layer, thereby improving the spray absorption effect of the distillation tower, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A spray absorption treatment device for a distillation tower, comprising two packing plates positioned one above and one below in the distillation tower, a spray water distributor positioned on the inner wall of the distillation tower is arranged above the packing plate in the upper position, a split flow release module is arranged above the two packing plates, the split flow release module comprises a top plate, a conical merging bucket, a central column and an angular release column, the top plate and the conical merging bucket are positioned from top to bottom directly above the corresponding packing plate through the central column, the number of the angular release columns is several, the several angular release columns are positioned in an annular shape outside the central column and connected to the central column, the top plate and the conical merging bucket are arranged ...nular shape outside the central column and connected to the central column, the top plate and the conical merging bucket are arranged in annular shape outside the central column and connected to the central column, the top plate and the conical merging bucket are arranged in annular shape outside the central column and connected to the central column, the top plate and the conical merging bucket are arranged in annular shape outside the central column and connected to the central column, the top plate and the conical merging bucket are arranged in annular shape inside the central column and connected to the central column, the top plate and the conical merging bucket are arranged in annular shape inside the central column and connected to the central column, the top plate and the conical merging bucket are arranged in annular shape inside the central column and Guide the sewage into the central pipe column and disperse it into the filler through several of the angular release pipe columns; a gas planning guide module is provided on the outside of the diversion release module, and the gas planning guide module includes an upper guide shell, a lower guide shell and a connecting shell, and the number of the connecting shells is two. The upper guide shell is positioned on the top of the lower guide shell through the two connecting shells, and the connecting shell is fixed inside the filler plate at the upper position to position the upper guide shell and the lower guide shell on the outside of the two diversion release modules. The upper guide shell and the lower guide shell are respectively connected to the upper and lower conical confluence buckets to guide the released reaction gas into the conical confluence bucket to pre-contact the treated sewage.

[0006] Furthermore, a filler impact module is provided on the outside of the diversion release module, and the filler impact module includes a flushing inclined tube, a hollow combination ring and a flushing pipe. The number of the flushing inclined tubes is several, and the several flushing inclined tubes are positioned inside the filler through the hollow combination ring. The flushing pipe is connected to the hollow combination ring to guide the flushing water to be released from the flushing inclined tube into the filler, and impact the filler from the inside to expand and process the filler.

[0007] Furthermore, the conical merging hopper is fixedly connected to the bottom of the top plate, the central tube column is fixedly connected to the top center position corresponding to the packing plate, the input end of the central tube column is fixedly connected to the discharge end of the conical merging hopper, and the side of the top plate is fixedly connected to the inner wall of the distillation tower.

[0008] Furthermore, the top plate, the conical merging bucket and the inclined portion of the angular release column are all located above the fillers in the corresponding areas.

[0009] Furthermore, the top plate located at the upper position is in close contact with and connected to the output end of the spray water distributor, a plurality of air holes are provided inside the top plate, and a clearance groove connected to the air holes is provided at the bottom of the top plate.

[0010] Furthermore, the upper guide shell is snap-connected to the inside of the filling plate at the upper position, the lower guide shell is snap-connected to the inside of the filling plate at the lower position, the top ends of the upper guide shell and the lower guide shell are respectively inserted into the corresponding conical converging buckets, the top end air outlets of the upper guide shell and the lower guide shell are respectively located in the corresponding give-way grooves, and the bottom end air outlet of the lower guide shell is exposed to the bottom of the filling plate at the lower position.

[0011] Furthermore, the number of the flushing inclined pipes corresponds to the number of the angular release pipe columns, and the flushing inclined pipes are fixedly connected to the bottom of the corresponding inclined portion of the angular release pipe column.

[0012] Furthermore, the number of the hollow combination rings is two, and the two hollow combination rings are respectively fixedly connected to the outer walls of the corresponding several ring-distributed flushing inclined pipes, the flushing pipes are fixedly connected to the inner wall of the distillation tower, and the output end of the flushing pipe is fixedly connected to the outer wall of the hollow combination ring.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The present invention sets two shunt release modules to connect two packing plates. The sewage released by the spray water distributor is collected and guided through the top plate and the conical confluence bucket, and can uniformly enter the center column, and is evenly dispersed and released into the packing from different areas in the packing layer by a plurality of annularly distributed angular release columns, while extending the release path of the sewage and slowing down the flow rate and flow rate. The gas planning and guiding module outside the shunt release module can guide part of the reaction gas to enter the two conical confluence buckets in turn, so that the reaction gas can contact the sewage in advance inside the conical confluence bucket to effectively perform a round of sewage pretreatment. The pretreated sewage flows through the center column and the angular release columns. The shaped release column is used to increase the contact treatment time and then released into the packing. Part of the reaction gas contacts the released sewage in the packing to treat the sewage again. The components separated into the gas phase are driven by the reaction gas and continue to be released upward through the air holes in fixed positions opened on the top plate, which can effectively increase the contact time and contact treatment effect of the sewage and the reaction gas. The packing impact module guides the flushing water to be released from different directions to different areas in the packing, effectively impacting the packing from the inside to control the gaps in the packing layer, so that the sewage and the reaction gas can be continuously separated and absorbed in the packing, thereby improving the spray absorption effect of the distillation tower and improving the operating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solution in the embodiment, the drawings in the embodiment are briefly introduced below.

[0016] Figure 1 It is a structural schematic diagram of the present invention;

[0017] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0018] Figure 3 It is a schematic diagram of the front cross-sectional structure of the interior of the present invention;

[0019] In the figure: 1. filler plate; 11. spray water distributor; 2. diversion release module; 21. top plate; 211. air hole; 212. give way groove; 22. conical confluence bucket; 23. center pipe column; 24. angular release pipe column; 3. gas planning guide module; 31. upper guide shell; 32. lower guide shell; 33. connecting shell; 4. filler impact module; 41. flushing inclined pipe; 42. hollow combination ring; 43. flushing pipe. DETAILED DESCRIPTION

[0020] The following is a clear and complete description of the technical solution in the embodiment of the present invention in conjunction with the accompanying drawings in the embodiment of the present invention. Figures 1 to 3 The detailed description of the structure will clearly show that the structural contents mentioned in the following embodiments are all based on the drawings in the specification.

[0021] See also Figure 1 to Figure 3 In an embodiment of the present invention, a spray absorption treatment device supporting a distillation tower includes two packing plates 1 positioned one above and one below in the distillation tower, a spray water distributor 11 positioned on the inner wall of the distillation tower is provided above the packing plate 1 in the upper position, and a split release module 2 is provided above the two packing plates 1. The split release module 2 includes a top plate 21, a conical merging bucket 22, a central column 23 and an angular release column 24. The top plate 21 and the conical merging bucket 22 are positioned directly above the corresponding packing plate 1 from top to bottom through the central column 23. The number of angular release columns 24 is several, and the several angular release columns 24 are positioned in an annular shape outside the central column 23 and connected to the central column 23. The top plate 21 and The conical confluence bucket 22 guides the sewage into the central pipe column 23 and is dispersed into the filler through a number of angular release pipe columns 24. A gas planning and guiding module 3 is arranged outside the diversion and release module 2. The gas planning and guiding module 3 includes an upper guiding shell 31, a lower guiding shell 32 and a connecting shell 33. There are two connecting shells 33. The upper guiding shell 31 is positioned on the top of the lower guiding shell 32 through two connecting shells 33. The connecting shell 33 is fixed inside the filler plate 1 at the upper position to position the upper guiding shell 31 and the lower guiding shell 32 outside the two diversion and release modules 2. The upper guiding shell 31 and the lower guiding shell 32 are respectively connected to the upper and lower conical confluence buckets 22 to guide the released reaction gas into the conical confluence bucket 22 to pre-contact the treated sewage.

[0022] A filler impact module 4 is provided on the outside of the diversion release module 2. The filler impact module 4 includes a flushing inclined tube 41, a hollow combination ring 42 and a flushing pipe 43. There are several flushing inclined tubes 41. Several flushing inclined tubes 41 are positioned inside the filler through the hollow combination ring 42. The flushing pipe 43 is connected to the hollow combination ring 42 to guide the flushing water to be released from the flushing inclined tube 41 into the filler, impacting the filler from the inside to expand the filler.

[0023] Two packing plates 1 are fixed on the inner wall of the distillation tower, one above and one below, and the packing plates 1 are used to carry and position the packing to form two packing spaces inside the distillation tower. A spray water distributor 11 is connected to the inner wall of the distillation tower, and the spray water distributor 11 is located above the upper packing plate 1, so that the spray water distributor 11 can spray and release sewage into the upper packing space, and move in the packing in the upper packing space to contact the reaction gas released from the bottom of the distillation tower for absorption treatment.

[0024] The two diversion and release modules 2 in the distillation tower are respectively arranged above the two packing plates 1, and the diversion and release module 2 is composed of a top plate 21, a conical converging bucket 22, a central column 23 and an angular release column 24. The conical converging bucket 22 is fixedly connected to the bottom of the top plate 21, the central column 23 is fixedly connected to the top center position of the corresponding packing plate 1, the input end of the central column 23 is fixedly connected to the discharge end of the conical converging bucket 22, and the number of angular release columns 24 is several, and several angular release columns 24 are fixedly connected to the bottom of the central column 23 in an annular shape, stably combining the top plate 21, the conical converging bucket 22, the central column 23 and the angular release column 24. The side of the top plate 21 is fixedly connected to the inner wall of the distillation tower, and the central column 23 is fixedly connected to the top center position of the corresponding packing plate 1, so that the diversion and release module 2 is stably positioned and connected in the corresponding packing space, ensuring that the diversion and release module 2 is stably used in the distillation tower. The top plate 21 located at the upper position is close to and connected to the output end of the spray water distributor 11. The top plate 21 has a matching hole corresponding to the output end of the spray water distributor 11, so that the sewage released by the spray water distributor 11 can continue to be released downward through the top plate 21. The conical confluence bucket 22 located below the top plate 21 collects the sewage passing through the top plate 21, and the collected sewage is continuously guided by the central pipe column 23, which can effectively collect, restrain and uniformly release the sewage. The bottom ends of several angular release pipe columns 24 annularly positioned outside the central pipe column 23 are connected to the central pipe column 23, so that several angular release pipe columns 24 can guide the sewage entering the interior of the central pipe column 23, and then discharge the sewage outward through the angular release pipe columns 24, achieving the effect of uniformly releasing the sewage inside the diverting central pipe column 23 and extending the sewage movement path, while slowing down the flow rate and flow of the sewage. The top plate 21, the conical converging bucket 22 and the inclined part of the angular release column 24 are all located above the corresponding area filler. The sewage released by the spray water distributor 11 will not directly enter the filler. The sewage is guided by the diversion release module 2 and released from the top of the filler in different directions to different areas in the filler by a number of angular release columns 24 in the corresponding filler space, effectively dispersing and releasing the sewage. A number of air holes 211 are opened inside the top plate 21, and the reaction gas can be released upward from a fixed position in the filler space through the air holes 211. The bottom of the top plate 21 is opened with a clearance groove 212 connected to the air hole 211, and the clearance groove 212 increases the connection space and the reaction gas release space to the gas planning and guiding module 3.

[0025] The gas planning and guiding module 3 in the distillation tower is in two packing spaces, and the gas planning and guiding module 3 is composed of an upper guiding shell 31, a lower guiding shell 32 and a connecting shell 33. There are two connecting shells 33, the upper guiding shell 31 is fixedly connected to the top of the connecting shell 33, and the lower guiding shell 32 is fixedly connected to the bottom of the connecting shell 33, so that the upper guiding shell 31 is positioned on the top of the lower guiding shell 32 through the two connecting shells 33. The upper guiding shell 31 is snap-connected to the inside of the packing plate 1 at the upper position, and the lower guiding shell 32 is snap-connected to the inside of the packing plate 1 at the lower position, so that the gas planning and guiding module 3 is stably positioned and connected to the two packing plates 1, so as to position the upper guiding shell 31 and the lower guiding shell 32 outside the two diversion release modules 2. The two ends of the connecting shell 33 are connected to the upper guide shell 31 and the lower guide shell 32 respectively. The top ends of the upper guide shell 31 and the lower guide shell 32 are respectively inserted into the corresponding conical converging bucket 22. The top gas outlets of the upper guide shell 31 and the lower guide shell 32 are respectively located in the corresponding give way grooves 212. The bottom gas outlet of the lower guide shell 32 is exposed to the bottom of the packing plate 1 at the lower position, so that the reaction gas released from the bottom of the distillation tower can enter from the bottom gas outlet of the lower guide shell 32, and after being guided into the upper guide shell 31 by the connecting shell 33, it is discharged from the top gas outlet of the upper guide shell 31 to the temporary storage space between the top plate 21 and the conical converging bucket 22, achieving the effect of route planning and guiding the release of part of the reaction gas. The part of the reaction gas guided to be released enters the conical converging bucket 22, and can pre-contact the sewage entering the conical converging bucket 22, so as to pre-contact and treat the sewage.

[0026] The diversion release module 2 in the upper position is connected to the spray water distributor 11. The sewage released by the spray water distributor 11 can be collected and guided by the top plate 21 and the conical confluence bucket 22, and can be uniformly entered into the center column 23, and dispersed into the packing from different areas in the packing layer by a number of annularly distributed angular release columns 24, effectively dispersing and releasing the sewage evenly, while extending the release path of the sewage and slowing down the flow rate and flow. The upper guide shell 31 and the lower guide shell 32 respectively positioned in the upper and lower packing spaces can guide part of the reaction gas to enter the two conical confluence buckets 22 in turn, so that the reaction gas can contact the sewage in advance inside the conical confluence bucket 22 to effectively perform a round of sewage pretreatment. The pretreated sewage flows through the central column 23 and the angular release column 24 to increase the contact treatment time and is then released into the packing. Part of the reaction gas contacts the released sewage in the packing to treat the sewage again. The components separated into the gas phase are driven by the reaction gas and continue to be released upward through the air holes 211 at fixed positions opened on the top plate 21, which can effectively increase the contact time between the sewage and the reaction gas and improve the contact treatment effect of the sewage in the packing space.

[0027] The two packing spaces are both provided with a packing impact module 4 buried in the packing, the packing impact module 4 is connected to the corresponding shunt release module 2, and the packing impact module 4 is composed of a flushing inclined pipe 41, a hollow combination ring 42 and a flushing pipe 43. The number of the flushing inclined pipes 41 corresponds to the number of the angular release columns 24, the flushing inclined pipes 41 are fixedly connected to the bottom of the inclined part of the corresponding angular release column 24, the number of the hollow combination rings 42 is two, and the two hollow combination rings 42 are respectively fixedly connected to the outer walls of the corresponding plurality of annularly distributed flushing inclined pipes 41, the flushing pipe 43 is fixedly connected to the inner wall of the distillation tower, and the output end of the flushing pipe 43 is fixedly connected to the outer wall of the hollow combination ring 42, so that the packing impact module 4 is stably connected to the corresponding shunt release module 2. A plurality of water flushing inclined tubes 41 are reinforced from the outside by a hollow combination ring 42 and are positioned in different areas of the packing by an angular release pipe column 24. The packing impact module 4 can guide the flushing water. The water flushing pipe 43 is connected to the hollow combination ring 42 to guide the flushing water into the interior of the water flushing inclined tube 41. The water flushing inclined tubes 41 release the water from different directions to different areas of the packing, effectively impacting the packing from the inside to expand the packing and control the gaps in the packing layer, so that the sewage and the reaction gas can be continuously separated and absorbed in the packing, thereby improving the spray absorption effect of the distillation tower and improving the operating efficiency.

[0028] The working principle of the present invention is as follows: sewage is released by the spray water distributor 11, and the sewage passes through the top plate 21 downward into the conical converging bucket 22, the top plate 21 and the conical converging bucket 22 collect and guide the sewage to uniformly enter the center pipe column 23, the reaction gas is released at the bottom of the rectification tower, the upper guide shell 31 and the lower guide shell 32 guide part of the reaction gas to enter the two conical converging buckets 22 in sequence, so that the reaction gas pre-contacts the sewage in the conical converging bucket 22 to effectively perform a round of sewage pretreatment, and the sewage mixed with the reaction gas is released from different areas in the packing layer into the packing by a plurality of annularly distributed angular release pipe columns 24, and is evenly distributed. The sewage is released and the release path of the sewage is extended, and the flow rate and flow rate are slowed down. Part of the reaction gas contacts the released sewage in the filler to treat the sewage again. The components separated into the gas phase are driven by the reaction gas and continue to be released upward through the air holes 211 at fixed positions opened on the top plate 21. During the absorption treatment process, the filler impact module 4 guides the flushing water, and the flushing pipe 43 guides the flushing water from the hollow combination ring 42 into the flushing inclined pipe 41. The flushing water is released from different directions to different areas in the filler by a plurality of flushing inclined pipes 41, and the filler is impacted from the inside to expand the treatment filler, so that the sewage and the reaction gas are continuously separated and absorbed in the filler.

[0029] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A spray absorption treatment device for a distillation tower, comprising two packing plates (1) positioned one above the other in the distillation tower, wherein a spray water distributor (11) positioned on the inner wall of the distillation tower is provided above the packing plate (1) located at the upper position, characterized in that: A flow splitting and releasing module (2) is disposed above each of the two packing plates (1). The flow splitting and releasing module (2) comprises a top plate (21), a conical converging bucket (22), a central pipe column (23), and an angular releasing pipe column (24). The top plate (21) and the conical converging bucket (22) are positioned directly above the corresponding packing plate (1) from top to bottom through the central pipe column (23). There are a plurality of angular releasing pipe columns (24). The plurality of angular releasing pipe columns (24) are positioned in an annular shape outside the central pipe column (23) and are connected to the central pipe column (23). The top plate (21) and the conical converging bucket (22) guide the sewage into the central pipe column (23) and the sewage is dispersed into the packing by the plurality of angular releasing pipe columns (24); A gas planning and guiding module (3) is provided outside the diversion and release module (2), and the gas planning and guiding module (3) comprises an upper guiding shell (31), a lower guiding shell (32) and a connecting shell (33). The number of the connecting shells (33) is two, and the upper guiding shell (31) is positioned on the top of the lower guiding shell (32) through the two connecting shells (33). The connecting shell (33) is fixed inside the filler plate (1) at an upper position to position the upper guiding shell (31) and the lower guiding shell (32) outside the two diversion and release modules (2). The upper guiding shell (31) and the lower guiding shell (32) are respectively connected to the upper and lower conical converging buckets (22) to guide the released reaction gas into the conical converging bucket (22) to contact the treated sewage in advance.

2. The spray absorption treatment equipment for a distillation tower according to claim 1, characterized in that: A filler impact module (4) is provided outside the diversion release module (2), the filler impact module (4) comprising a flushing inclined pipe (41), a hollow combination ring (42) and a flushing pipe (43), the flushing inclined pipe (41) being provided in a plurality of numbers, the plurality of flushing inclined pipes (41) being positioned inside the filler through the hollow combination ring (42), the flushing pipe (43) being connected to the hollow combination ring (42) to guide flushing water to be released from the flushing inclined pipe (41) into the filler, impacting the filler from the inside to expand the filler.

3. The spray absorption treatment equipment for a distillation tower according to claim 1, characterized in that: The conical converging hopper (22) is fixedly connected to the bottom of the top plate (21), the central tube column (23) is fixedly connected to the top center position corresponding to the packing plate (1), the input end of the central tube column (23) is fixedly connected to the discharge end of the conical converging hopper (22), and the side of the top plate (21) is fixedly connected to the inner wall of the distillation tower.

4. The spray absorption treatment equipment for a distillation tower according to claim 1, characterized in that: The top plate (21), the conical merging bucket (22) and the inclined portion of the angular release column (24) are all located above the fillers in the corresponding areas.

5. The spray absorption treatment equipment for a distillation tower according to claim 1, characterized in that: The top plate (21) located at the upper position is in close contact with and connected to the output end of the spray water distributor (11), a plurality of air holes (211) are provided inside the top plate (21), and a clearance groove (212) connected to the air holes (211) is provided at the bottom of the top plate (21).

6. The spray absorption treatment equipment for a distillation tower according to claim 5, characterized in that: The upper guide shell (31) is snap-fitted and connected to the inside of the filling plate (1) at the upper position, and the lower guide shell (32) is snap-fitted and connected to the inside of the filling plate (1) at the lower position. The top ends of the upper guide shell (31) and the lower guide shell (32) are respectively inserted into the corresponding conical converging bucket (22). The top end air outlets of the upper guide shell (31) and the lower guide shell (32) are respectively located in the corresponding give-way groove (212), and the bottom end air outlet of the lower guide shell (32) is exposed to the bottom of the filling plate (1) at the lower position.

7. The spray absorption treatment equipment for a distillation tower according to claim 2, characterized in that: The number of the flushing inclined pipes (41) corresponds to the number of the angular release pipe columns (24), and the flushing inclined pipes (41) are fixedly connected to the bottom of the corresponding inclined portion of the angular release pipe column (24).

8. The spray absorption treatment equipment for a distillation tower according to claim 2, characterized in that: The number of the hollow combination rings (42) is two, and the two hollow combination rings (42) are respectively fixedly connected to the outer walls of a corresponding number of the flushing inclined pipes (41) distributed in a ring shape, the flushing pipe (43) is fixedly connected to the inner wall of the distillation tower, and the output end of the flushing pipe (43) is fixedly connected to the outer wall of the hollow combination ring (42).

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