CN220899556U - Methanol and dimethyl carbonate diethyl ester azeotrope separating tower - Google Patents
Methanol and dimethyl carbonate diethyl ester azeotrope separating tower Download PDFInfo
- Publication number
- CN220899556U CN220899556U CN202322254074.5U CN202322254074U CN220899556U CN 220899556 U CN220899556 U CN 220899556U CN 202322254074 U CN202322254074 U CN 202322254074U CN 220899556 U CN220899556 U CN 220899556U
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- China
- Prior art keywords
- methanol
- arc
- filler
- separating tower
- tower body
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- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 title claims abstract description 108
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 title claims description 19
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 title claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 53
- 238000005507 spraying Methods 0.000 claims abstract description 42
- 239000000945 filler Substances 0.000 claims abstract description 32
- 238000000926 separation method Methods 0.000 claims description 20
- 239000007921 spray Substances 0.000 claims description 20
- 239000007788 liquid Substances 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 11
- 238000003860 storage Methods 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims 1
- 239000000203 mixture Substances 0.000 abstract description 15
- -1 dimethyl diethyl carbonate Chemical compound 0.000 abstract description 14
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 4
- PFCDCPSYOAAJFZ-UHFFFAOYSA-N diethyl carbonate;dimethyl carbonate Chemical compound COC(=O)OC.CCOC(=O)OCC PFCDCPSYOAAJFZ-UHFFFAOYSA-N 0.000 abstract 1
- 238000012856 packing Methods 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- 238000009835 boiling Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 238000005886 esterification reaction Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
- 239000005711 Benzoic acid Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000010533 azeotropic distillation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000010233 benzoic acid Nutrition 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000032050 esterification Effects 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 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
- 150000002894 organic compounds Chemical class 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000001256 steam distillation Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The utility model discloses a methanol and dimethyl diethyl carbonate azeotrope separating tower, which comprises a separating tower body, a condensing box and a control box, wherein the separating tower body is arranged on a fixing frame, one side of the inside of the separating tower body is provided with a plurality of first arc-shaped water spraying plates, one side of the first arc-shaped water spraying plates is connected with a first connecting pipe, one side of the inside of the azeotrope separating tower is provided with a plurality of arc-shaped water spraying plates capable of spraying steam, the other side of the inside of the azeotrope separating tower is provided with a corresponding arc-shaped water spraying plate capable of spraying a mixture of methanol and dimethyl diethyl carbonate, the steam and the mixture are in relatively spraying contact, the heating speed of the mixture can be fast improved, the methanol is fast heated so as to be evaporated and separated through a filler, the separating efficiency is improved, the purity of the dimethyl carbonate diethyl carbonate is improved, and when the filler is required to be taken out, all the filler is directly lifted out by a crane, and the installation is very simple.
Description
Technical Field
The utility model relates to the field of azeotrope separation towers, in particular to a methanol and dimethyl carbonate diethyl ester azeotrope separation tower.
Background
Diethyl methyl carbonate, having the chemical formula CH3OCOOC H5, is an organic compound, also known as diethyl methyl carbonate. The method is an ester compound obtained by reacting methanol and ethanol with dimethyl carbonate.
Diethyl methyl carbonate is mainly used as a solvent in organic synthesis. The production of diethyl methyl carbonate is generally accomplished by esterification of dimethyl carbonate with methanol. In the reaction, methanol is used as an alcohol source to react with dimethyl carbonate to generate a product. In general, the reaction is carried out in the presence of an acidic catalyst, and sulfuric acid, formic acid, benzoic acid or the like are commonly used as the catalyst. Meanwhile, the temperature and the reaction time need to be controlled in the reaction process to improve the yield; after the esterification reaction is finished, an azeotrope separation tower is often needed to separate the esterification reaction, so that the aim of purification is fulfilled;
The azeotropic distillation is to utilize the distribution of different components between gas and liquid phases, and achieve the purpose of separation through mass transfer and heat transfer between the gas and liquid phases for a plurality of times, methanol and dimethyl carbonate diethyl ester are two substances with different boiling points, when the substances are separated through an azeotropic separation method, the dimethyl carbonate diethyl ester is left at the bottom of the tower in the azeotropic separation process, and along with the steam distillation, the methanol with lower boiling point is distilled out, the existing azeotropic separation tower has single function, the mixture of the methanol and the dimethyl carbonate diethyl ester is circulated through a circulation flow channel and heated by the steam, so that the methanol reaches the boiling point for distillation.
Disclosure of utility model
The utility model aims at overcoming the defects of the prior art and provides a methanol and dimethyl carbonate diethyl ester azeotrope separating tower to solve the problems of the prior art.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a methyl alcohol and dimethyl carbonate diethyl azeotrope knockout drum, includes knockout drum body, condensation box and control box, the knockout drum body is installed on the mount, a plurality of first arc water spray plate is installed to inside one side of knockout drum body, one side of first arc water spray plate is connected with first connecting pipe, a plurality of second arc water spray plate is installed to the inside opposite side of knockout drum body, one side of second arc water spray plate is connected with the second connecting pipe, be equipped with the mount slot between first arc water spray plate and the second arc water spray plate, the mount slot interpolation has the filler mount, the inboard lug ring that welds in top of filler mount, install a plurality of filler on the filler mount, the bottom of knockout drum body is connected with the deposit liquid fill, the bottom of deposit liquid fill is connected with the centrifugal pump, the centrifugal pump links to each other with the material conveyer pipe, the top cap is installed at the top of knockout drum body, the top of top cap is connected with the blast pipe, the one end and the condensation box of blast pipe link to each other.
As a preferable technical scheme of the utility model, the inner sides of the first arc-shaped water spraying plate and the second arc-shaped water spraying plate are respectively provided with a plurality of nozzles.
As a preferable technical scheme of the utility model, the second arc-shaped water spraying plate is connected with the material conveying pipe and the material feeding pipe through a second connecting pipe, and the first arc-shaped water spraying plate is connected with the steam conveying pipe and the steam inlet pipe through a first connecting pipe.
As a preferable technical scheme of the utility model, the separation tower body is arranged on the fixing frame through bolts, the tower top cover is fixedly connected with the top of the separation tower body through the connecting flange and the sealing gasket, and the liquid storage hopper is fixedly connected with the bottom of the separation tower body through the connecting flange and the sealing gasket.
As a preferable technical scheme of the utility model, the filler is arranged on the top of a fixed plate of the filler fixing frame through bolts, a plurality of through holes are uniformly formed in the fixed plate, and the filler fixing frame is welded by adopting a stainless steel material.
As a preferable technical scheme of the utility model, the control box is electrically connected with the centrifugal pump.
The beneficial effects of the utility model are as follows: the arc-shaped water spraying plates capable of spraying out steam are arranged on one side of the inside of the azeotrope separating tower, the corresponding arc-shaped water spraying plates capable of spraying out mixtures of methanol and dimethyl diethyl carbonate are arranged on the other side of the azeotrope separating tower, the steam and the mixtures can be in quick contact with each other in a relative spraying mode, the heating speed of the mixtures can be quickly improved, the methanol can be quickly heated and then evaporated and separated through the filler, the methanol can be evaporated, the separation efficiency is improved, the purity of the dimethyl diethyl carbonate is improved, and when the filler needs to be taken out, all the filler needs to be directly lifted out together by using a crane, and the installation is quite simple.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic structural view of a filler holder according to the present utility model;
FIG. 3 is a schematic view of the structure of the arc-shaped water spraying plate of the present utility model;
FIG. 4 is a schematic structural view of the packing of the present utility model.
In the figure: the separation tower comprises a separation tower body 1, a tower top cover 2, a liquid storage hopper 3, a fixing frame 4, a steam conveying pipe 5, a steam inlet pipe 6, a first connecting pipe 7, a material conveying pipe 8, a second connecting pipe 9, a feeding pipe 10, a centrifugal pump 11, a condensing box 12, a control box 13, a packing 14, a packing fixing frame 15, a lifting lug ring 16, a first arc-shaped water spraying plate 17, a second arc-shaped water spraying plate 18, a fixing frame slot 19, a nozzle 20 and an exhaust pipe 21.
Detailed Description
The preferred embodiments of the present utility model will be described in detail below with reference to the attached drawings so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present utility model.
Examples: referring to fig. 1-4, the present utility model provides a technical solution: the utility model provides a methyl alcohol and dimethyl carbonate diethyl azeotrope knockout drum, including knockout drum body 1, condensate tank 12 and control box 13, knockout drum body 1 is installed on mount 4, a plurality of first arc water spray plate 17 is installed to one side of the inside of knockout drum body 1, one side of first arc water spray plate 17 is connected with first connecting pipe 7, a plurality of second arc water spray plate 18 is installed to the inside opposite side of knockout drum body 1, one side of second arc water spray plate 18 is connected with second connecting pipe 9, be equipped with mount slot 19 between first arc water spray plate 17 and the second arc water spray plate 18, mount slot 19 interpolation has filler mount 15, the inboard lug ring 16 that welds in top of filler mount 15, install a plurality of filler 14 on the filler mount 15, the bottom of knockout drum body 1 is connected with liquid storage bucket 3, the bottom of liquid storage bucket 3 is connected with centrifugal pump 11, centrifugal pump 11 is connected with material conveyer pipe 8, tower top cap 2 is installed at the top of knockout drum body 1, the top of tower cap 2 is connected with blast pipe 21, the one end of blast pipe 21 links to each other with condensate tank 12.
A plurality of nozzles 20 are installed on the inner sides of the first arc-shaped water spraying plate 17 and the second arc-shaped water spraying plate 18.
The second arc-shaped water spraying plate 18 is connected with the material conveying pipe 8 and the feeding pipe 10 through the second connecting pipe 9, and the first arc-shaped water spraying plate 17 is connected with the steam conveying pipe 5 and the steam inlet pipe 6 through the first connecting pipe 7.
The separating tower body 1 is installed on the fixing frame 4 through the bolt, the tower top cover 2 is fixedly connected with the top of the separating tower body 1 through the connecting flange and the sealing gasket, and the liquid storage hopper 3 is fixedly connected with the bottom of the separating tower body 1 through the connecting flange and the sealing gasket, so that later disassembly and assembly are convenient.
The filler 14 is arranged on the top of a fixed plate of the filler fixing frame 15 through bolts, a plurality of through holes are uniformly formed in the fixed plate, and the filler fixing frame 15 is welded by adopting a stainless steel material, so that the filler fixing frame is firm and not easy to deform.
The control box 13 is electrically connected with the centrifugal pump 11, and the control box 13 is used for controlling the centrifugal pump 11 to work by electrifying, so that the mixture of the methanol and the dimethyl carbonate diethyl ester circularly flows.
Working principle: when the azeotropic separation tower for the methyl alcohol and the dimethyl carbonate diethyl ester is used, the mixture of the methyl alcohol and the dimethyl carbonate diethyl ester is conveyed into the second arc-shaped water spraying plate 18 through the feeding pipe 10, is sprayed out through the nozzle 20 on the second arc-shaped water spraying plate 18, the steam inlet pipe 6 is sprayed out through the nozzle 20 on the first arc-shaped water spraying plate 17, the flow rate of the nozzle 20 on the second arc-shaped water spraying plate 18 connected with the feeding pipe 10 is larger than that of the nozzle 20 on the second arc-shaped water spraying plate 18 connected with the second connecting pipe 9, so that the nozzle 20 on the second arc-shaped water spraying plate 18 connected with the feeding pipe 10 sprays more mixture of the methyl alcohol and the dimethyl carbonate diethyl ester, the mixture of the methanol and the dimethyl diethyl carbonate which are not heated by the steam enters the liquid storage hopper 3, the mixture of the methanol and the dimethyl diethyl carbonate in the liquid storage hopper 3 is pumped into the second connecting pipe 9 through the centrifugal pump 11, enters the second arc-shaped water spraying plate 18 through the second connecting pipe 9, and utilizes the second arc-shaped water spraying plate 18 to spray water mist, meanwhile, the steam in the steam inlet pipe 6 enters the first arc-shaped water spraying plate 17 through the first connecting pipe 7, and the steam is sprayed through the first arc-shaped water spraying plate 17, so that the steam is fully contacted with the mixed water mist of the methanol and the dimethyl diethyl carbonate, thereby improving the heating efficiency, enabling the methanol to be quickly heated and evaporated, and is conveyed to the condensing box 12 through the exhaust pipe 21 for condensation recovery; when the packing 14 needs to be replaced, the tower top cover 2 is opened, the packing fixing frame 15 is hung on the lifting lug ring 16 by the crane, and the packing fixing frame 15 is pulled out of the fixing frame slot 19 by the crane, so that the installation is very simple, the flexibility is high, and the later replacement and cleaning are convenient.
The arc-shaped water spraying plates capable of spraying out steam are arranged on one side of the inside of the azeotrope separating tower, the corresponding arc-shaped water spraying plates capable of spraying out mixtures of methanol and dimethyl diethyl carbonate are arranged on the other side of the azeotrope separating tower, the steam and the mixtures can be in quick contact with each other in a relative spraying mode, the heating speed of the mixtures can be quickly improved, the methanol can be quickly heated and then evaporated and separated through the filler, the methanol can be evaporated, the separation efficiency is improved, the purity of the dimethyl diethyl carbonate is improved, and when the filler needs to be taken out, all the filler needs to be directly lifted out together by using a crane, and the installation is quite simple.
The foregoing examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model.
Claims (6)
1. The utility model provides a methanol and dimethyl carbonate diethyl azeotrope knockout tower, includes knockout tower body (1), condensing box (12) and control box (13), its characterized in that: the utility model discloses a condensate tank, including separating tower body (1), mount (4), separating tower body (1), a plurality of first arc water spray board (17) are installed to inside one side of separating tower body (1), one side of first arc water spray board (17) is connected with first connecting pipe (7), a plurality of second arc water spray board (18) are installed to inside opposite side of separating tower body (1), one side of second arc water spray board (18) is connected with second connecting pipe (9), be equipped with mount slot (19) between first arc water spray board (17) and second arc water spray board (18), mount slot (19) interpolation has filler mount (15), the inboard welding in top of filler mount (15) has lug ring (16), install a plurality of filler (14) on filler mount (15), the bottom of separating tower body (1) is connected with liquid storage bucket (3), the bottom of liquid storage bucket (3) is connected with centrifugal pump (11), centrifugal pump (11) link to each other with material conveying pipe (8), top cap (21) are installed at top of separating tower (1), top cap (21) is connected with blast pipe (21).
2. The methanol and dimethyl carbonate diethyl ester azeotrope separation column of claim 1, wherein: a plurality of nozzles (20) are arranged on the inner sides of the first arc-shaped water spraying plate (17) and the second arc-shaped water spraying plate (18).
3. The methanol and dimethyl carbonate diethyl ester azeotrope separation column of claim 1, wherein: the second arc water spraying plate (18) is connected with the material conveying pipe (8) and the feeding pipe (10) through the second connecting pipe (9), and the first arc water spraying plate (17) is connected with the steam conveying pipe (5) and the steam inlet pipe (6) through the first connecting pipe (7).
4. The methanol and dimethyl carbonate diethyl ester azeotrope separation column of claim 1, wherein: the separating tower body (1) is arranged on the fixing frame (4) through bolts, the tower top cover (2) is fixedly connected with the top of the separating tower body (1) through a connecting flange and a sealing gasket, and the liquid storage hopper (3) is fixedly connected with the bottom of the separating tower body (1) through the connecting flange and the sealing gasket.
5. The methanol and dimethyl carbonate diethyl ester azeotrope separation column of claim 1, wherein: the filler (14) is arranged on the top of a fixed plate of the filler fixing frame (15) through bolts, a plurality of through holes are uniformly formed in the fixed plate, and the filler fixing frame (15) is welded by adopting a stainless steel material.
6. The methanol and dimethyl carbonate diethyl ester azeotrope separation column of claim 1, wherein: the control box (13) is electrically connected with the centrifugal pump (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322254074.5U CN220899556U (en) | 2023-08-21 | 2023-08-21 | Methanol and dimethyl carbonate diethyl ester azeotrope separating tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322254074.5U CN220899556U (en) | 2023-08-21 | 2023-08-21 | Methanol and dimethyl carbonate diethyl ester azeotrope separating tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220899556U true CN220899556U (en) | 2024-05-07 |
Family
ID=90913551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322254074.5U Active CN220899556U (en) | 2023-08-21 | 2023-08-21 | Methanol and dimethyl carbonate diethyl ester azeotrope separating tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220899556U (en) |
-
2023
- 2023-08-21 CN CN202322254074.5U patent/CN220899556U/en active Active
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