CN113893568A - Acrylic acid purification lightness-removing tower - Google Patents
Acrylic acid purification lightness-removing tower Download PDFInfo
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- CN113893568A CN113893568A CN202111202152.6A CN202111202152A CN113893568A CN 113893568 A CN113893568 A CN 113893568A CN 202111202152 A CN202111202152 A CN 202111202152A CN 113893568 A CN113893568 A CN 113893568A
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- tower
- gas
- plate
- fixedly connected
- tower plate
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- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 title claims abstract description 31
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 238000000746 purification Methods 0.000 title claims description 11
- 239000007788 liquid Substances 0.000 claims abstract description 89
- 238000003756 stirring Methods 0.000 claims abstract description 45
- 239000000463 material Substances 0.000 claims description 16
- 238000001914 filtration Methods 0.000 claims description 4
- 238000009423 ventilation Methods 0.000 claims 3
- 239000012535 impurity Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 241000521257 Hydrops Species 0.000 description 4
- 206010030113 Oedema Diseases 0.000 description 4
- 230000000630 rising effect Effects 0.000 description 4
- 238000002156 mixing Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000032050 esterification Effects 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- 239000012847 fine chemical Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
- B01D3/16—Fractionating columns in which vapour bubbles through liquid
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The invention relates to the field of light component removal towers, in particular to a light component removal tower for purifying acrylic acid. Including tower body, column plate, motor, pivot, No. two column plates and ventilative board, air inlet, gas outlet, inlet and liquid outlet have been seted up to the surface of tower body, No. one column plate of inner wall fixedly connected with of tower body, No. one column plate is protruding structure, is the concave surface all around, the through-hole has been seted up in the middle of the column plate, bottom fixedly connected with motor in the tower body, fixedly connected with pivot on the motor, and the pivot is located the through-hole, No. two column plates of fixedly connected with in the pivot, No. two column plates are recessed structure, and middle concave surface and column plate staggered arrangement with No. one, tower body inner wall fixedly connected with ventilative board, ventilative board rotates with the pivot to be connected, and is located between column plate and the gas outlet. The invention uses the motor to stir the gas and liquid in the tower body by the second tower plate, thereby achieving the purpose of more fully transferring the mass between the gas and the liquid.
Description
Technical Field
The invention relates to the field of light component removal towers, in particular to a light component removal tower for purifying acrylic acid.
Background
Acrylic acid is an unsaturated organic acid, and contains carbon-carbon double bonds and carboxyl structures in molecules, so that a series of compounds can be derived to form a large class of acrylic acid products. At present, the acrylic acid industry with unique characteristics is formed in the field of modern chemical industry, and the acrylic acid industry becomes an important derivative of propylene like polypropylene, acrylonitrile and propylene oxide. The excellent polymerization and esterification capability of the acrylic acid provides an extremely important intermediate for the synthesis and preparation of various fine chemicals.
At present, most of the acrylic acid is purified by using a rectification mode, gas and liquid are contacted with each other for mass transfer during rectification, and the gas and liquid are contacted with each other for a short time, so that the condition of insufficient gas-liquid mass transfer is often caused.
In view of the above, in order to overcome the above technical problems, the present invention provides an acrylic acid purification and lightness removal tower, which solves the above technical problems.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the problem of how to ensure that the gas-liquid mass transfer is more sufficient in the rectification process of the acrylic acid.
In order to achieve the above purpose, the invention provides the following technical scheme:
the invention provides an acrylic acid purification and lightness-removing tower which comprises a tower body, a first tower plate, a motor, a rotating shaft, a second tower plate and a ventilating plate, wherein an air inlet, an air outlet, a liquid inlet and a liquid outlet are formed in the outer surface of the tower body, the first tower plate is fixedly connected to the inner wall of the tower body, the first tower plate is of a convex structure, concave surfaces are formed in the periphery of the first tower plate, a through hole is formed in the middle of the first tower plate, the motor is fixedly connected to the bottom in the tower body, the rotating shaft is fixedly connected to the rotating shaft and located in the through hole, the second tower plate is of a concave structure, the middle of the second tower plate is of a concave surface and is arranged in a staggered mode with the first tower plate, the ventilating plate is fixedly connected to the inner wall of the tower body, and is rotatably connected to the rotating shaft and located between the first tower plate and the air outlet.
Preferably, the lower surfaces of the first tower plate and the second tower plate are fixedly connected with stirring rods, the stirring rods are of T-shaped structures, and the lower ends of the stirring rods are located in concave surfaces of the first tower plate and the second tower plate.
Preferably, burrs are fixedly connected to the outer surfaces of the two ends of the stirring rod.
Preferably, a gas pipe is fixedly connected in the tower body and communicated with the gas inlet, a first vent hole is formed in the first tower plate and communicated with the gas pipe, a second vent hole is formed in the stirring rod on the first tower plate and communicated with the first vent hole.
Preferably, the structure of the gas conveying pipe is a spiral structure.
Preferably, a groove is formed in the ventilating plate, filter materials are filled in the groove, a flange is fixedly connected to the outer surface of the tower body, and the flange is communicated with the groove.
The invention has the following beneficial effects:
1. the invention utilizes the motor to enable the second tower plate to stir the gas and the liquid in the tower body, and increases the contact time of the gas and the liquid, thereby leading the mass transfer between the gas and the liquid to be more sufficient, and further improving the purity of the acrylic acid.
2. The stirring rods are arranged on the lower surfaces of the first tower plate and the second tower plate, and the stirring rods are used for stirring the liquid in the concave surfaces of the first tower plate and the second tower plate, so that the liquid in the concave surfaces of the first tower plate and the second tower plate is better connected with gas, and the mass transfer between gas and liquid is more sufficient.
3. The invention utilizes the burrs on the stirring rod to puncture the bubbles generated by stirring the liquid by the stirring rod so as to prevent the bubbles from flowing into the next layer of tower plate to cause the phenomenon of gas phase back mixing.
4. The air conveying pipe is designed into a spiral structure, and when air enters the air conveying pipe from the air inlet, accelerated cyclone is formed, so that the air has the effect of higher flow speed in the air conveying pipe.
5. The groove is formed in the air permeable plate, the filter material is filled in the groove to absorb impurities generated after gas-liquid mass transfer, so that the impurities and the acrylic acid are prevented from being mutually dissolved again, the purification efficiency of the acrylic acid is improved, and after the filter material is used for a long time, the filter material in the groove can be replaced through the flange, so that the filter material has a good filtering effect for a long time.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view showing the position of a gas delivery pipe according to the present invention;
FIG. 3 is a schematic internal view of tray No. one of the present invention and its stirring rods.
In the figure: the tower body 1, an air inlet 11, an air outlet 12, a liquid inlet 13, a liquid outlet 14, a gas pipe 15, a flange 16, a first tower plate 2, a through hole 21, a first vent hole 22, a motor 3, a rotating shaft 4, a second tower plate 5, a vent plate 6, a groove 61, a filter material 611, a stirring rod 7, burrs 71 and a second vent hole 72.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
The invention provides an acrylic acid purification lightness-removing tower, which comprises a tower body 1, a first tower plate 2, a motor 3, a rotating shaft 4, a second tower plate 5 and a ventilating plate 6, wherein the outer surface of the tower body 1 is provided with an air inlet 11, an air outlet 12, a liquid inlet 13 and a liquid outlet 14, the inner wall of the tower body 1 is fixedly connected with the first tower plate 2, the first tower plate 2 is of a convex structure, the periphery of the first tower plate 2 is concave, the middle of the first tower plate 2 is provided with a through hole 21, the bottom in the tower body 1 is fixedly connected with the motor 3, the motor 3 is fixedly connected with the rotating shaft 4, the rotating shaft 4 is positioned in the through hole 21, the rotating shaft 4 is fixedly connected with the second tower plate 5, the second tower plate 5 is of a concave structure, the middle of the first tower plate 2 is concave and is arranged in a staggered manner, the ventilating plate 6 is fixedly connected with the inner wall of the tower body 1, and the ventilating plate 6 is rotatably connected with the rotating shaft 4 and positioned between the first tower plate 2 and the air outlet 12.
At present, most of the acrylic acid rectification purification is that gas is directly conveyed into a tower, the gas is contacted with liquid by itself for mass transfer, the contact time between the gas and the liquid is short, and the mass transfer is insufficient, therefore, the invention installs a first tower plate 2 on the inner wall of a tower body 1, installs a second tower plate 5 on a rotating shaft 4, when the liquid enters into the first tower plate 2 from a liquid inlet 13, along with the rising of the liquid level, the liquid flows into the second tower plate 5 from a through hole 21 in the middle of the first tower plate 2, along with the rising of the liquid level, the liquid overflows the second tower plate 5, continues to flow downwards along the gap between the second tower plate 5 and the tower body 1 until the liquid flows out from a liquid outlet 14, and the gas enters from a gas inlet 11, flows upwards from the through hole 21 in the middle of the first tower plate 2, continues to flow upwards from the gap formed between the second tower plate 5 and the tower body 1 until the gas passes through a gas permeable plate 6 and flows out from a gas outlet 12, after liquid flows into the bottom of tower body 1, because liquid flow is big, can't flow from liquid outlet 14 fast, thereby form the hydrops at the bottom of the tower, and the liquid level of hydrops is less than air inlet 11 all the time, consequently, liquid can not flow from air inlet 11, gaseous can not follow liquid outlet 14 yet, and meanwhile, starter motor 3 drives pivot 4 and rotates, because pivot 4 and No. two 5 fixed connection of column plate, pivot 4 drives No. two 5 rotations of column plate, mix gas and liquid in the tower body 1, increase the time of gas-liquid contact, thereby make the mass transfer between the gas-liquid more abundant, thereby improve the purity of acrylic acid.
As a specific embodiment of the invention, the lower surfaces of the first tower plate 2 and the second tower plate 5 are fixedly connected with stirring rods 7, the stirring rods 7 are in T-shaped structures, and the lower ends of the stirring rods 7 are positioned in the concave surfaces of the first tower plate 2 and the second tower plate 5.
Because a large amount of liquid flows into the concave surfaces of the first tower plate 2 and the second tower plate 5, the gas can not contact with the liquid in the concave surfaces of the first tower plate 2 and the second tower plate 5 for mass transfer, therefore, the invention installs the stirring rods 7 on the lower surfaces of the first tower plate 2 and the second tower plate 5, when the rotating shaft 4 drives the second tower plate 5 to rotate, because the lower ends of the stirring rods 7 on the second tower plate 5 are positioned in the concave surface of the first tower plate 2, the stirring rods 7 on the second tower plate 5 stir the liquid in the concave surface of the first tower plate 2, meanwhile, as the lower end of the stirring rod 7 on the first tower plate 2 is positioned in the concave surface of the second tower plate 5, along with the rotation of the second tower plate 5, the stirring rod 7 on the first tower plate 2 can stir the liquid in the concave surface of the second tower plate 5, therefore, the liquid in the concave surfaces of the first tower plate 2 and the second tower plate 5 is better connected with the gas, and the mass transfer between the gas and the liquid is more sufficient.
As a specific embodiment of the present invention, burrs 71 are fixedly connected to the outer surfaces of both ends of the stirring rod 7.
When the stirring rod 7 stirs liquid, a large amount of bubbles can appear, and the bubbles can flow to the next layer of tower plate along with the liquid, so that gas phase back mixing is caused.
As a specific embodiment of the invention, a gas pipe 15 is fixedly connected in the tower body 1, the gas pipe 15 is communicated with the gas inlet 11, a first vent hole 22 is formed in the first tower plate 2, the first vent hole 22 is communicated with the gas pipe 15, a second vent hole 72 is formed in the stirring rod 7 on the first tower plate 2, and the second vent hole 72 is communicated with the first vent hole 22.
Because the gas can only flow upwards through the through hole 21 in the middle of the first tower plate 2 or the gap between the second tower plate 5 and the inner wall of the tower body 1 after entering from the gas inlet 11, and the contact surface between the gas and the liquid is less, the invention opens the first vent hole 22 and the second vent hole 72 in the first tower plate 2 and the stirring rod 7 on the first tower plate 2, the first vent hole 22 is communicated with the second vent hole 72, the gas pipe 15 is fixedly connected in the tower body 1, one end of the gas pipe 15 is communicated with the first vent hole 22, the other end of the gas pipe 15 is communicated with the gas inlet 11, when the gas is entered from the gas inlet 11, the gas can directly enter the gas pipe 15 through the gas inlet 11, and then the gas is output into the first tower plate 2 and the second tower plate 5 through the first vent hole 22 and the second vent hole 72, thereby increasing the contact surface between the gas and the liquid, leading the mass transfer to be more sufficient, and leading the gas and the liquid to be rapidly contacted, thereby improving the efficiency of mass transfer.
As an embodiment of the present invention, the air pipe 15 has a spiral structure.
Because the gas enters the gas conveying pipe 15 from the gas inlet 11 and then is conveyed into the first through hole 21 and the second through hole 72 by the gas conveying pipe 15, the gas and the liquid can be in quick contact, the flow speed of the gas in the gas conveying pipe 15 is higher, and therefore the invention designs the gas conveying pipe 15 into a spiral structure, and when the gas enters the gas conveying pipe 15 from the gas inlet 11, an accelerated cyclone is formed, so that the gas has the effect of higher flow speed in the gas conveying pipe 15.
As a specific embodiment of the present invention, a groove 61 is formed in the air-permeable plate 6, the groove 61 is filled with the filter material 611, the flange 16 is fixedly connected to the outer surface of the tower body 1, and the flange 16 is communicated with the groove 61.
Impurities are not avoided after gas-liquid mass transfer, so that the groove 61 is formed in the air permeable plate 6, the groove 61 is filled with the filter material 611, such as activated carbon, to absorb the impurities generated after the gas-liquid mass transfer, so that the impurities and the acrylic acid are prevented from being dissolved mutually again, the purification efficiency of the acrylic acid is improved, and after the filter material 611 is used for a long time, the filter material 611 in the groove 61 can be replaced through the flange 16, so that the filter material has a good filtering effect for a long time.
The working principle is as follows: at present, most of the acrylic acid rectification purification is that gas is directly conveyed into a tower, the gas is contacted with liquid by itself for mass transfer, the contact time between the gas and the liquid is short, and the mass transfer is insufficient, therefore, the invention installs a first tower plate 2 on the inner wall of a tower body 1, installs a second tower plate 5 on a rotating shaft 4, when the liquid enters into the first tower plate 2 from a liquid inlet 13, along with the rising of the liquid level, the liquid flows into the second tower plate 5 from a through hole 21 in the middle of the first tower plate 2, along with the rising of the liquid level, the liquid overflows the second tower plate 5, continues to flow downwards along the gap between the second tower plate 5 and the tower body 1 until the liquid flows out from a liquid outlet 14, and the gas enters from a gas inlet 11, flows upwards from the through hole 21 in the middle of the first tower plate 2, continues to flow upwards from the gap formed between the second tower plate 5 and the tower body 1 until the gas passes through a gas permeable plate 6 and flows out from a gas outlet 12, after liquid flows into the bottom of tower body 1, because liquid flow is big, can't flow from liquid outlet 14 fast, thereby form the hydrops at the bottom of the tower, and the liquid level of hydrops is less than air inlet 11 all the time, consequently, liquid can not flow from air inlet 11, gaseous can not follow liquid outlet 14 yet, and meanwhile, starter motor 3 drives pivot 4 and rotates, because pivot 4 and No. two 5 fixed connection of column plate, pivot 4 drives No. two 5 rotations of column plate, mix gas and liquid in the tower body 1, increase the time of gas-liquid contact, thereby make the mass transfer between the gas-liquid more abundant, thereby improve the purity of acrylic acid.
Because a large amount of liquid flows into the concave surfaces of the first tower plate 2 and the second tower plate 5, the gas can not contact with the liquid in the concave surfaces of the first tower plate 2 and the second tower plate 5 for mass transfer, therefore, the invention installs the stirring rods 7 on the lower surfaces of the first tower plate 2 and the second tower plate 5, when the rotating shaft 4 drives the second tower plate 5 to rotate, because the lower ends of the stirring rods 7 on the second tower plate 5 are positioned in the concave surface of the first tower plate 2, the stirring rods 7 on the second tower plate 5 stir the liquid in the concave surface of the first tower plate 2, meanwhile, as the lower end of the stirring rod 7 on the first tower plate 2 is positioned in the concave surface of the second tower plate 5, along with the rotation of the second tower plate 5, the stirring rod 7 on the first tower plate 2 can stir the liquid in the concave surface of the second tower plate 5, therefore, the liquid in the concave surfaces of the first tower plate 2 and the second tower plate 5 is better connected with the gas, and the mass transfer between the gas and the liquid is more sufficient.
When the stirring rod 7 stirs liquid, a large amount of bubbles can appear, and the bubbles can flow to the next layer of tower plate along with the liquid, so that gas phase back mixing is caused.
Because the gas can only flow upwards through the through hole 21 in the middle of the first tower plate 2 or the gap between the second tower plate 5 and the inner wall of the tower body 1 after entering from the gas inlet 11, and the contact surface between the gas and the liquid is less, the invention opens the first vent hole 22 and the second vent hole 72 in the first tower plate 2 and the stirring rod 7 on the first tower plate 2, the first vent hole 22 is communicated with the second vent hole 72, the gas pipe 15 is fixedly connected in the tower body 1, one end of the gas pipe 15 is communicated with the first vent hole 22, the other end of the gas pipe 15 is communicated with the gas inlet 11, when the gas is entered from the gas inlet 11, the gas can directly enter the gas pipe 15 through the gas inlet 11, and then the gas is output into the first tower plate 2 and the second tower plate 5 through the first vent hole 22 and the second vent hole 72, thereby increasing the contact surface between the gas and the liquid, leading the mass transfer to be more sufficient, and leading the gas and the liquid to be rapidly contacted, thereby improving the efficiency of mass transfer.
Because the gas enters the gas conveying pipe 15 from the gas inlet 11 and then is conveyed into the first through hole 21 and the second through hole 72 by the gas conveying pipe 15, the gas and the liquid can be in quick contact, the flow speed of the gas in the gas conveying pipe 15 is higher, and therefore, the invention designs the gas conveying pipe 15 into a spiral structure, and when the gas enters the gas conveying pipe 15 from the gas inlet 11, an accelerated cyclone is formed, so that the gas has the effect of higher flow speed in the gas conveying pipe 15.
Impurities are not avoided after gas-liquid mass transfer, so that the groove 61 is formed in the air permeable plate 6, the groove 61 is filled with the filter material 611, such as activated carbon, to absorb the impurities generated after the gas-liquid mass transfer, so that the impurities and the acrylic acid are prevented from being dissolved mutually again, the purification efficiency of the acrylic acid is improved, and after the filter material 611 is used for a long time, the filter material 611 in the groove 61 can be replaced through the flange 16, so that the filter material has a good filtering effect for a long time.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides an acrylic acid purification takes off light tower, includes tower body (1), column plate (2), motor (3), pivot (4), No. two column plates (5) and ventilative board (6), its characterized in that: the outer surface of the tower body (1) is provided with an air inlet (11), an air outlet (12), a liquid inlet (13) and a liquid outlet (14), the inner wall of the tower body (1) is fixedly connected with a first tower plate (2), the first tower plate (2) is of a convex structure, the periphery of the first tower plate is a concave surface, a through hole (21) is arranged in the middle of the first tower plate (2), a motor (3) is fixedly connected to the bottom in the tower body (1), a rotating shaft (4) is fixedly connected to the motor (3), the rotating shaft (4) is positioned in the through hole (21), a second tower plate (5) is fixedly connected on the rotating shaft (4), the second tower plate (5) is of a concave structure, the middle part is concave and is arranged in a staggered way with the first tower plate (2), the tower body (1) inner wall fixedly connected with ventilative board (6), ventilative board (6) rotate with pivot (4) and are connected, and are located No. one tower plate (2) and gas outlet (12) between.
2. The acrylic acid purifying and lightness-removing column as claimed in claim 1, wherein: the lower surfaces of the first tower plate (2) and the second tower plate (5) are fixedly connected with stirring rods (7), the stirring rods (7) are of T-shaped structures, and the lower ends of the stirring rods (7) are located in concave surfaces of the first tower plate (2) and the second tower plate (5).
3. The acrylic acid purifying and lightness-removing column as claimed in claim 2, wherein: burrs (71) are fixedly connected to the outer surfaces of the two ends of the stirring rod (7).
4. The acrylic acid purifying and lightness-removing column as claimed in claim 1, wherein: fixedly connected with gas-supply pipe (15) in tower body (1), gas-supply pipe (15) are linked together with air inlet (11), No. one ventilation hole (22) has been seted up in tower board (2), No. one ventilation hole (22) are linked together with gas-supply pipe (15), No. two air vent (72) have been seted up to stirring rod (7) on tower board (2) inside, and No. two air vent (72) are linked together with a ventilation hole (22).
5. The acrylic acid purifying and light components removing tower as claimed in claim 4, wherein: the air conveying pipe (15) is of a spiral structure.
6. The acrylic acid purifying and lightness-removing column as claimed in claim 1, wherein: the tower is characterized in that a groove (61) is formed in the ventilating plate (6), a filtering material (611) is filled in the groove (61), a flange (16) is fixedly connected to the outer surface of the tower body (1), and the flange (16) is communicated with the groove (61).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111202152.6A CN113893568B (en) | 2021-10-15 | 2021-10-15 | Acrylic acid purification light component removing tower |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111202152.6A CN113893568B (en) | 2021-10-15 | 2021-10-15 | Acrylic acid purification light component removing tower |
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| CN113893568B CN113893568B (en) | 2024-01-05 |
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