CN220071579U - Acetic acid production device based on oil-free screw air compressor - Google Patents
Acetic acid production device based on oil-free screw air compressor Download PDFInfo
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- CN220071579U CN220071579U CN202320836991.1U CN202320836991U CN220071579U CN 220071579 U CN220071579 U CN 220071579U CN 202320836991 U CN202320836991 U CN 202320836991U CN 220071579 U CN220071579 U CN 220071579U
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- Prior art keywords
- tower
- acetic acid
- separator
- oxidation
- cooler
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- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 title claims abstract description 161
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 238000007254 oxidation reaction Methods 0.000 claims description 85
- 230000003647 oxidation Effects 0.000 claims description 81
- IKHGUXGNUITLKF-UHFFFAOYSA-N Acetaldehyde Chemical compound CC=O IKHGUXGNUITLKF-UHFFFAOYSA-N 0.000 claims description 50
- 239000002253 acid Substances 0.000 claims description 41
- 229910052748 manganese Inorganic materials 0.000 claims description 17
- 239000011572 manganese Substances 0.000 claims description 17
- 230000005587 bubbling Effects 0.000 claims description 16
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 15
- 238000009835 boiling Methods 0.000 claims description 13
- 238000001704 evaporation Methods 0.000 claims description 13
- 230000008020 evaporation Effects 0.000 claims description 13
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 claims description 12
- 238000003860 storage Methods 0.000 claims description 9
- 239000000126 substance Substances 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 12
- 229940071125 manganese acetate Drugs 0.000 description 11
- UOGMEBQRZBEZQT-UHFFFAOYSA-L manganese(2+);diacetate Chemical compound [Mn+2].CC([O-])=O.CC([O-])=O UOGMEBQRZBEZQT-UHFFFAOYSA-L 0.000 description 11
- 238000006243 chemical reaction Methods 0.000 description 8
- 239000003054 catalyst Substances 0.000 description 6
- 239000012071 phase Substances 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000007791 liquid phase Substances 0.000 description 4
- 238000000926 separation method Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000036632 reaction speed Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 150000001242 acetic acid derivatives Chemical class 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The utility model discloses an acetic acid production device based on an oil-free screw air compressor, and relates to the technical field of chemical safety production equipment.
Description
Technical Field
The utility model relates to the technical field of chemical safety production equipment, in particular to an acetic acid production device based on an oil-free screw air compressor.
Background
At present, the main method for producing acetic acid at home is to produce acetic acid through an acetaldehyde oxidation reaction, namely, acetic acid is obtained by using acetaldehyde and compressed air as raw materials and manganese acetate as a catalyst. The quality of the compressed air is related to the quality and cost of acetic acid and the service time of manganese acetate as a catalyst, and the service time of manganese acetate determines the frequency of start-up and shutdown. Therefore, the method has great significance for the quality improvement research of the compressed air. At present, compressed air is obtained through an oil screw air compressor, and the reaction speed of acetaldehyde and oxygen in the air, the acetic acid conversion rate and the service life of manganese acetate are directly influenced by more impurities such as greasy dirt in the compressed air and higher temperature.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model aims to provide an acetic acid production device based on an oil-free screw air compressor, which can solve the technical problems that the existing compressed air is obtained through the oil-free screw air compressor, oil stains and other impurities in the compressed air are more, the temperature is higher, and the reaction speed of acetaldehyde and oxygen in the air, the acetic acid conversion rate and the service life of manganese acetate are directly influenced.
In order to achieve the above object, the present utility model provides the following technical solutions:
the utility model provides an acetic acid apparatus for producing based on oil-free screw air compressor machine, apparatus for producing includes oil-free screw air compressor machine, air heat exchanger, air buffer tank, acetaldehyde oxidation tower, crude acetic acid storage tank, high boiling evaporation pan, crude acetic acid concentration tower, dilute acid metering tank and dilute acid big jar, oil-free screw air compressor machine, air heat exchanger, air buffer tank, acetaldehyde oxidation tower, crude acetic acid storage tank, high boiling evaporation pan, crude acetic acid concentration tower, dilute acid metering tank and dilute acid big jar connect gradually.
Preferably, the acetaldehyde oxidation tower is connected with an oxidation tower cooler, an oxidation tower separator and a bubbling, and the bubbling is connected with a dilute acid big tank.
Preferably, the oxidation tower cooler comprises a first oxidation tower cooler, a second oxidation tower cooler and a third oxidation tower cooler, the oxidation tower separator comprises a first oxidation tower separator, a second oxidation tower separator and a third oxidation tower separator, the first oxidation tower cooler, the first oxidation tower separator, the second oxidation tower cooler, the second oxidation tower separator, the third oxidation tower cooler and the third oxidation tower separator are sequentially connected, and the third oxidation tower separator is communicated with the bottom of the acetaldehyde oxidation tower.
Preferably, the high-boiling evaporation pan is connected with a manganese circulating groove, the manganese circulating groove is connected with a manganese configuration kettle, and the manganese circulating groove is communicated with the bottom of the acetaldehyde oxidation tower.
Preferably, a concentration tower cooler, a concentration tower separator and a recovered aldehyde condenser are connected to the crude acetic acid concentration tower.
Preferably, the concentration tower cooler comprises a first concentration tower cooler and a second concentration tower cooler, the concentration tower separator comprises a first concentration tower separator and a second concentration tower separator, the first concentration tower cooler, the first concentration tower separator, the second concentration tower cooler, the second concentration tower separator and the recovered aldehyde condenser are sequentially connected, and the second concentration tower separator is connected with the crude acetic acid concentration tower and the dilute acid metering tank.
Preferably, the dilute acid metering tank is connected with the bubbling, and a dilute acid pump is arranged between the dilute acid metering tank and the bubbling.
Preferably, the method further comprises a reboiler, wherein the reboiler is connected to the bottom of the crude acetic acid concentration tower.
Compared with the prior art, the utility model has the beneficial effects that: the utility model improves the catalytic effect and the service life of the catalyst by optimizing the quality of air, improves the reaction rate, reduces the consumption, improves the acid yield, reduces the frequent degree of start-up and shut-down, and achieves the aims of high efficiency, yield increase and safety.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings required for the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.
Fig. 1 is a schematic diagram of the overall structure of an acetic acid production device based on an oil-free screw air compressor.
Reference numerals illustrate:
1-oilless screw air compressor, 2-air heat exchanger, 3-air buffer tank, 4-acetaldehyde oxidation tower, 5-crude acetic acid storage tank, 6-high boiling evaporation pan, 7-crude acetic acid concentration tower, 8-dilute acid metering tank, 9-dilute acid big tank, 10-bubbling, 11-first oxidation tower cooler, 12-second oxidation tower cooler, 13-third oxidation tower cooler, 14-first oxidation tower separator, 15-second oxidation tower separator, 16-third oxidation tower separator, 17-manganese circulation tank, 18-manganese configuration kettle, 19-recovery aldehyde condenser, 20-first concentration tower cooler, 21-second concentration tower cooler, 22-first concentration tower separator, 23-second concentration tower separator, 24-dilute acid pump, 25-reboiler.
Detailed Description
The utility model will now be described in detail, by way of example, with reference to the accompanying drawings, wherein it is evident that the embodiments described are only some, but not all, of the embodiments of the utility model.
Referring to fig. 1, the utility model provides an acetic acid production device based on an oilless screw air compressor, which comprises an oilless screw air compressor 1, an air heat exchanger 2, an air buffer tank 3, an acetaldehyde oxidation tower 4, a crude acetic acid storage tank 5, a high-boiling evaporation pan 6, a crude acetic acid concentration tower 7, a dilute acid metering tank 8 and a dilute acid large tank 9, wherein the oilless screw air compressor 1, the air heat exchanger 2, the air buffer tank 3, the acetaldehyde oxidation tower 4, the crude acetic acid storage tank 5, the high-boiling evaporation pan 6, the crude acetic acid concentration tower 7, the dilute acid metering tank 8 and the dilute acid large tank 9 are sequentially connected.
Further, in this embodiment, the acetaldehyde oxidation column 4 is connected with an oxidation column cooler, an oxidation column separator, and a bubbling 10, the bubbling 10 is connected with a dilute acid tank 9, and the oxidation column cooler is a shell and tube cooler.
Further, in the present embodiment, the oxidation column cooler includes a first oxidation column cooler 11, a second oxidation column cooler 12, and a third oxidation column cooler 13, the oxidation column separator includes a first oxidation column separator 14, a second oxidation column separator 15, and a third oxidation column separator 16, the first oxidation column cooler 11, the first oxidation column separator 14, the second oxidation column cooler 12, the second oxidation column separator 15, the third oxidation column cooler 13, and the third oxidation column separator 16 are sequentially connected, and the third oxidation column separator 16 is in communication with the bottom of the acetaldehyde oxidation column 4. And the repeated circulation cooling separation is beneficial to improving the conversion rate of acetic acid.
Further, in this embodiment, a manganese circulation tank 17 is connected to the high-boiling evaporation pan 6, a manganese configuration kettle 18 is connected to the manganese circulation tank 17, and the manganese circulation tank 17 is communicated with the bottom of the acetaldehyde oxidation tower 4. Manganese acetate is added into the acetaldehyde oxidation tower 4 as a catalyst, the catalytic effect and the service life of the catalyst are improved by optimizing the quality of air, the reaction yield is improved, the consumption is reduced, the acid yield is improved, the frequency of starting and stopping is reduced, and the purposes of high efficiency, yield increase and safety are achieved.
Further, in the present embodiment, a concentration column cooler, a concentration column separator, and a recovered aldehyde condenser 19 are connected to the crude acetic acid concentration column 7, and the concentration column cooler is a tube type cooler.
Further, in the present embodiment, the concentration column cooler includes a first concentration column cooler 20 and a second concentration column cooler 21, the concentration column separator includes a first concentration column separator 22 and a second concentration column separator 23, the first concentration column cooler 20, the first concentration column separator 22, the second concentration column cooler 21, the second concentration column separator 23, and the recovered aldehyde condenser 19 are connected in this order, and the second concentration column separator 23 is connected with the crude acetic acid concentration column 7 and the dilute acid metering tank 8. The concentration tower cooler and the concentration tower separator can separate gas from liquid, the final product is dilute acid, and the recovery aldehyde condenser removes noncondensable gas which is always present in the process.
Further, in the present embodiment, the dilute acid metering tank 8 is connected to the bubbling 10, and a dilute acid pump 24 is provided between the dilute acid metering tank 8 and the bubbling 10.
Further, in this embodiment, a reboiler 25 is further included, and the reboiler 25 is connected to the bottom of the crude acetic acid concentration column 7. The reboiler 25 is mainly used for heating the bottom of the crude acetic acid concentration tower 7, and in the rectification process, all the crude acetic acid enters the crude acetic acid concentration tower 7 from the high-boiling evaporation pot 6 to be in a gas phase, and the gas phase and the liquid phase are changed into a gas phase and a liquid phase after cooling and separating and refluxing through a concentration tower cooler and a concentration tower separator, and at the moment, the reboiler 25 heats the liquid phase at the bottom of the tower to be in a gas phase, and then carries out circulation cooling and separation.
The working process of the utility model is as follows: when the machine is started, firstly, manganese acetate is prepared in a manganese preparation kettle 18, the manganese acetate enters a manganese circulation tank 17, and the manganese acetate enters an acetaldehyde oxidation tower 4 as a catalyst for oxidation reaction; compressed air from the oil-free screw air compressor 1 is cooled by an air heat exchanger 2 and then enters an air buffer tank 3 for storage, during production, acetaldehyde and air undergo oxidation reaction in an acetaldehyde oxidation tower 4 to generate acetic acid, tail gas after reaction separates residual acid and aldehyde by an oxidation tower cooler and an oxidation tower separator, after cooling and separation, the residual acid and aldehyde return to the bottom of the acetaldehyde oxidation tower 4 for oxidation reaction again, and acid gas generated in the reaction process enters a bubbling 10 to be absorbed by the bubbling 10; acetic acid generated by the reaction enters a crude acetic acid storage tank 5, manganese acetate extracted by a high-boiling evaporation pot 6 enters a manganese circulation tank 17, manganese acetate is circulated into an acetaldehyde oxidation tower 4, acetic acid separated by the high-boiling evaporation pot 6 enters a crude acetic acid concentration tower 7 for rectification, gas phase and liquid phase are cooled and separated by a concentration tower cooler and a concentration tower separator, aldehyde gas enters a recovered aldehyde condenser 19 and is cooled by salt water, dilute acid separated by the circulating cooling enters a dilute acid metering tank 8 from a second concentration tower separator 23, is pumped into a bubbling 10 through a dilute acid pump 24 and is dissolved with gas phase acid gas in the bubbling 10, and finally enters a dilute acid large tank 9 for workshop use.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, shall cover the scope of the present utility model by equivalent substitution or modification according to the technical scheme of the present utility model and the application concept thereof.
Claims (8)
1. Acetic acid apparatus for producing based on oil-free screw air compressor machine, its characterized in that: the production device comprises an oil-free screw air compressor (1), an air heat exchanger (2), an air buffer tank (3), an acetaldehyde oxidation tower (4), a crude acetic acid storage tank (5), a high-boiling evaporation pan (6), a crude acetic acid concentration tower (7), a dilute acid metering tank (8) and a dilute acid big tank (9), wherein the oil-free screw air compressor (1), the air heat exchanger (2), the air buffer tank (3), the acetaldehyde oxidation tower (4), the crude acetic acid storage tank (5), the high-boiling evaporation pan (6), the crude acetic acid concentration tower (7), the dilute acid metering tank (8) and the dilute acid big tank (9) are sequentially connected.
2. An acetic acid production device based on an oil-free screw air compressor as claimed in claim 1, wherein: the acetaldehyde oxidation tower (4) is connected with an oxidation tower cooler, an oxidation tower separator and a bubbling (10), and the bubbling (10) is connected with a dilute acid large tank (9).
3. An acetic acid production device based on oil-free screw air compressor as claimed in claim 2, wherein: the oxidation tower cooler comprises a first oxidation tower cooler (11), a second oxidation tower cooler (12) and a third oxidation tower cooler (13), wherein the oxidation tower separator comprises a first oxidation tower separator (14), a second oxidation tower separator (15) and a third oxidation tower separator (16), and the first oxidation tower cooler (11), the first oxidation tower separator (14), the second oxidation tower cooler (12), the second oxidation tower separator (15), the third oxidation tower cooler (13) and the third oxidation tower separator (16) are sequentially connected, and the third oxidation tower separator (16) is communicated with the bottom of the acetaldehyde oxidation tower (4).
4. An acetic acid production device based on an oil-free screw air compressor as claimed in claim 1, wherein: the high-boiling evaporation pan (6) is connected with a manganese circulating groove (17), the manganese circulating groove (17) is connected with a manganese configuration kettle (18), and the manganese circulating groove (17) is communicated with the bottom of the acetaldehyde oxidation tower (4).
5. An acetic acid production device based on an oil-free screw air compressor as claimed in claim 1, wherein: the crude acetic acid concentration tower (7) is connected with a concentration tower cooler, a concentration tower separator and a recovered aldehyde condenser (19).
6. The acetic acid production device based on the oil-free screw air compressor as claimed in claim 5, wherein: the concentration tower cooler comprises a first concentration tower cooler (20) and a second concentration tower cooler (21), the concentration tower separator comprises a first concentration tower separator (22) and a second concentration tower separator (23), the first concentration tower cooler (20), the first concentration tower separator (22), the second concentration tower cooler (21), the second concentration tower separator (23) and the recovered aldehyde condenser (19) are sequentially connected, and the second concentration tower separator (23) is connected with the crude acetic acid concentration tower (7) and the dilute acid metering tank (8).
7. An acetic acid production device based on oil-free screw air compressor as claimed in claim 2, wherein: the dilute acid metering tank (8) is connected with the bubbling (10), and a dilute acid pump (24) is arranged between the dilute acid metering tank (8) and the bubbling (10).
8. An acetic acid production device based on an oil-free screw air compressor as claimed in claim 1, wherein: the device also comprises a reboiler (25), and the reboiler (25) is connected to the bottom of the crude acetic acid concentration tower (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320836991.1U CN220071579U (en) | 2023-04-15 | 2023-04-15 | Acetic acid production device based on oil-free screw air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320836991.1U CN220071579U (en) | 2023-04-15 | 2023-04-15 | Acetic acid production device based on oil-free screw air compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220071579U true CN220071579U (en) | 2023-11-24 |
Family
ID=88819717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320836991.1U Active CN220071579U (en) | 2023-04-15 | 2023-04-15 | Acetic acid production device based on oil-free screw air compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220071579U (en) |
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2023
- 2023-04-15 CN CN202320836991.1U patent/CN220071579U/en active Active
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