CN219681713U - Working solution moisture removal system in hydrogen peroxide production - Google Patents
Working solution moisture removal system in hydrogen peroxide production Download PDFInfo
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- CN219681713U CN219681713U CN202320793023.7U CN202320793023U CN219681713U CN 219681713 U CN219681713 U CN 219681713U CN 202320793023 U CN202320793023 U CN 202320793023U CN 219681713 U CN219681713 U CN 219681713U
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- Prior art keywords
- water
- communicated
- working solution
- outlet end
- hydrogen peroxide
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- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 title claims abstract description 54
- 239000012224 working solution Substances 0.000 title claims abstract description 47
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 60
- 239000007788 liquid Substances 0.000 claims abstract description 30
- 230000018044 dehydration Effects 0.000 claims abstract description 27
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 27
- 238000001704 evaporation Methods 0.000 claims abstract description 18
- 230000008020 evaporation Effects 0.000 claims abstract description 18
- 238000000926 separation method Methods 0.000 claims abstract description 18
- 238000000605 extraction Methods 0.000 claims abstract description 13
- 239000004927 clay Substances 0.000 claims abstract description 11
- 239000012530 fluid Substances 0.000 claims description 22
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 6
- 239000000945 filler Substances 0.000 claims 1
- 238000009835 boiling Methods 0.000 abstract description 8
- YEVQZPWSVWZAOB-UHFFFAOYSA-N 2-(bromomethyl)-1-iodo-4-(trifluoromethyl)benzene Chemical compound FC(F)(F)C1=CC=C(I)C(CBr)=C1 YEVQZPWSVWZAOB-UHFFFAOYSA-N 0.000 abstract description 4
- 150000004945 aromatic hydrocarbons Chemical class 0.000 abstract description 4
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 229920006395 saturated elastomer Polymers 0.000 abstract description 3
- 208000005156 Dehydration Diseases 0.000 abstract 6
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 8
- 239000003513 alkali Substances 0.000 description 6
- 238000005984 hydrogenation reaction Methods 0.000 description 6
- 239000000243 solution Substances 0.000 description 5
- 239000003054 catalyst Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229910052763 palladium Inorganic materials 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- PYKYMHQGRFAEBM-UHFFFAOYSA-N anthraquinone Natural products CCC(=O)c1c(O)c2C(=O)C3C(C=CC=C3O)C(=O)c2cc1CC(=O)OC PYKYMHQGRFAEBM-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000003809 water extraction Methods 0.000 description 2
- -1 2-ethyl hydrogen anthraquinone Chemical class 0.000 description 1
- SJEBAWHUJDUKQK-UHFFFAOYSA-N 2-ethylanthraquinone Chemical compound C1=CC=C2C(=O)C3=CC(CC)=CC=C3C(=O)C2=C1 SJEBAWHUJDUKQK-UHFFFAOYSA-N 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 150000004056 anthraquinones Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Drying Of Gases (AREA)
Abstract
The utility model discloses a water removal system of working solution in hydrogen peroxide production, which comprises a water separation module, a water separation module and a water separation module, wherein the water separation module is used for receiving and treating pure water-containing working solution discharged by an extraction tower; the heater is communicated with the working solution outlet end of the water separation module; the flash evaporation dehydration module is communicated with the liquid outlet end of the heater; and the clay bed is communicated with the liquid outlet end of the flash evaporation dehydration module. The system firstly carries out dehydration treatment on the working solution which is discharged from the extraction tower and is extracted by pure water through a water separation module; the temperature of the working solution is regulated by a heater, so that the working solution can meet the temperature required by a subsequent flash evaporation dehydration module, and the stable operation of the flash evaporation dehydration module is ensured; after the working solution enters the flash dehydration module, the high-pressure saturated working solution enters a container with lower pressure, the temperature of the working solution is higher than the boiling point under the pressure to generate boiling due to the sudden reduction of the pressure, the vapor pressure of water is obviously higher than that of heavy aromatic hydrocarbon and trioctyl phosphate, and the water in the generated vapor is enriched, so that the partial removal of the water is realized.
Description
Technical Field
The utility model relates to the technical field of hydrogen peroxide preparation, in particular to a system for removing water from working solution in hydrogen peroxide production.
Background
The preparation of hydrogen peroxide is to prepare a solution with a certain composition by taking 2-ethyl anthraquinone as a reaction carrier and heavy aromatic hydrocarbon, trioctyl phosphate and acetate as mixed solvents. The preparation process comprises the steps of hydrogenation reaction, oxidation reaction, extraction purification and post-treatment, namely, firstly, introducing working solution and hydrogen into a hydrogenation tower filled with palladium catalyst, and carrying out hydrogenation reaction at a certain temperature and pressure to obtain a corresponding 2-ethyl hydrogen anthraquinone solution; after entering an oxidation tower, the hydrogenated liquid is oxidized by air under certain pressure and temperature conditions, and the hydro-anthraquinone in the working liquid is recovered to the original anthraquinone and hydrogen peroxide is generated; the working solution containing hydrogen peroxide enters an extraction tower, and the working solution containing hydrogen peroxide is extracted by pure water by utilizing the difference of the solubility of the hydrogen peroxide in water and the working solution and the density difference of the working solution and the water to obtain an aqueous solution containing hydrogen peroxide; finally, the working solution after pure water extraction enters the hydrogenation tower again after the post-treatment process.
Because the water content in the working solution after pure water extraction is too high, the working solution directly enters the hydrogenation tower, so that the problems of quick failure of active alumina, shortened service life of palladium catalyst and the like are caused, and the normal production is seriously influenced. Therefore, the working solution needs to be dehydrated after the working solution enters the hydrogenation tower, the prior art mostly adopts an alkali tower for dehydration, the dehydration effect of the alkali tower is related to the alkali concentration in the alkali tower, the higher the alkali concentration is, the better the dehydration effect is, but the conditions that the liquid is provided with alkali, hydrogen peroxide is decomposed and the like are caused by the too high concentration, and the working such as cleaning, regeneration and the like are needed, so that the production cost is increased.
Disclosure of Invention
The utility model aims to at least solve one of the above-mentioned technical problems, and provides a working solution moisture removal system in hydrogen peroxide production, which adopts a heater to cooperate with a flash evaporation dehydration module to effectively reduce the moisture content in the working solution.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
a water removal system for working solution in hydrogen peroxide production,
as an improvement to the above-described technical solution,
compared with the prior art, the utility model has the beneficial effects that:
the utility model relates to a working solution moisture removal system in hydrogen peroxide production, which comprises the steps of firstly, dehydrating working solution which is discharged from an extraction tower and is extracted by pure water through a water separation module; the temperature of the working solution is regulated by a heater, so that the working solution can meet the temperature required by a subsequent flash evaporation dehydration module, and the stable operation of the flash evaporation dehydration module is ensured; after the working solution enters a flash evaporation dehydration module, the high-pressure saturated working solution enters a container with lower pressure, the temperature of the working solution is higher than the boiling point under the pressure to generate boiling due to the sudden reduction of the pressure, and the vapor pressure of water is obviously higher than that of heavy aromatic hydrocarbon and trioctyl phosphate, so that the water in the generated vapor is enriched, thereby realizing the partial removal of the water; finally, working solution with water content meeting the process requirement is obtained through a clay bed. The system adopts the heater to match with the flash evaporation dehydration module, reduces the moisture content of the working solution, effectively prolongs the service cycle of the palladium catalyst and the activated alumina, reduces the production cost and ensures the stable and efficient operation of the device.
Drawings
The utility model is described in further detail below with reference to the attached drawing figures, wherein:
FIG. 1 is a flowchart illustrating an embodiment of the present utility model;
FIG. 2 is a second flowchart illustrating an embodiment of the present utility model;
FIG. 3 is a flow chart of the operation of the flash dehydration module in an embodiment of the utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present, as well as being disposed not only in an intermediate position but also in both ends as far as they are within the scope defined by the intermediate position. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1 to 3, the present utility model provides a system for removing water from a working solution in hydrogen peroxide production, which comprises a water separation module 100 for receiving and processing a pure water-containing working solution discharged from an extraction tower 500; the heater 200 is communicated with the working solution outlet end of the water separation module 100; the flash dehydration module 300 is communicated with the liquid outlet end of the heater 200; clay bed 400 communicates with the liquid outlet end of flash dehydration module 300. The extraction tower 500 is a device used in an extraction and purification process in a hydrogen peroxide preparation process, and outputs an aqueous solution containing hydrogen peroxide.
Referring to fig. 2 and 3, in the embodiment of the present utility model, the flash dehydration module 300 includes a dehydrator 310 and a vacuum pump 320, the dehydrator 310 is connected to the liquid outlet end of the heater 200, the clay bed 400 is connected to the liquid outlet end of the dehydrator 310, and the vacuum pump 320 is connected to the dehydrator 310. The dehydrator 310 adopts a vacuum dehydrator, and vacuumizes the inside of the dehydrator 310 through a vacuum pump 320, so that a negative pressure environment is formed inside the dehydrator 310; after the working fluid with a certain temperature processed by the heater 200 enters the vacuum dehydrator, the pressure is suddenly reduced to negative pressure, the temperature of the working fluid is higher than the corresponding saturation temperature in the negative pressure environment, at the moment, the fluid is in an unbalanced overheat state, the overheat working fluid is severely vaporized due to the sudden pressure drop to form a flash evaporation phenomenon, and the boiling point of the working fluid is higher than the boiling point of the working fluid under the pressure, so that the water of the working fluid is evaporated. In other embodiments, the dehydrator 310 may be replaced with a flash tank.
Further, to ensure the continuity of the flash evaporation treatment, the dehydrator 310 is provided with two groups, the input ends of the two groups of dehydrators 310 are all communicated with the liquid outlet end of the heater 200 through the liquid inlet pipe 311, the output ends of the two groups of dehydrators 310 are all communicated with the clay bed 400 through the liquid outlet pipe 312, and the vacuum pump 320 is communicated with the two groups of dehydrators 310 through the air exhaust pipe 321. So that the heated working fluid may be alternately passed to the two sets of dehydrators 310 for flash evaporation without interruption. In addition, in order to control the operation of the two sets of dehydrators 310 conveniently, control valves are arranged on all the liquid inlet pipe 311, the liquid outlet pipe 312 and the air exhaust pipe 321; when the control valve of the liquid inlet pipe 311 of one group of dehydrators 310 is opened for flash evaporation treatment, namely, the control valve of the liquid inlet pipe 311 of the other dehydrator 310 is closed, the pumping pipe 321 is opened for vacuumizing treatment, and the dehydrators 310 into which the working liquid is introduced are alternately replaced, so that the continuity of dehydration operation is ensured.
In a specific embodiment of the present utility model, in order to ensure that the temperature of the working fluid after entering the dehydrator 310 can be higher than the corresponding saturation temperature in the negative pressure environment, the outlet end of the heater 200 is connected to a thermometer 210, so as to measure the outlet temperature in real time.
In a specific embodiment of the present utility model, the water separation module 100 includes a coalescer 110, an input end of the coalescer 110 is connected to a liquid outlet end of the extraction column 500, and the heater 200 is connected to a working liquid outlet end of the coalescer 110. Further, the coalescer 110 is internally provided with a plurality of sets of hydrophilic coalescing cartridges 111. The hydrophilic coalescing filter element 111 is prior art and the present utility model will not be described in detail. And the coalescer 110 is communicated with a water diversion packet 112, and a drain pipe is arranged on the water diversion packet 112. The working fluid formed in the extraction column 500 passes through the hydrophilic coalescing filter element 111, is subjected to coarse dehydration by the hydrophilic coalescing filter element 111, and is discharged through the water separation drum 112.
Further, an activated alumina packing layer is provided inside the clay bed 400. The activated alumina is a porous and highly dispersed solid material, has a large surface area and strong hygroscopicity, does not swell or crack after water absorption, and is used for removing water from the working solution from the outlet of the dehydrator 310 again, so that the water content in the working solution meets the process requirement.
The utility model relates to a water removal system for working solution in hydrogen peroxide production, which comprises the steps of firstly, dehydrating the working solution which is discharged from an extraction tower 500 and is extracted by pure water through a water separation module 100; the temperature of the working fluid is regulated by the heater 200, so that the working fluid can meet the temperature required by the subsequent flash evaporation dehydration module 300, and the stable operation of the flash evaporation dehydration module 300 is ensured; after the working solution enters the flash dehydration module 300, the high-pressure saturated working solution enters a container with lower pressure, boiling is generated due to the fact that the temperature of the working solution is higher than the boiling point under the pressure due to the sudden reduction of the pressure, and water is enriched in the generated steam due to the fact that the vapor pressure of the water is obviously higher than that of heavy aromatic hydrocarbon and trioctyl phosphate, so that partial removal of water is realized; finally, the working fluid with the water content meeting the process requirements is obtained through the clay bed 400. The system adopts the heater 200 to be matched with the flash evaporation dehydration module 300, reduces the moisture content of the working solution, effectively prolongs the service cycle of the palladium catalyst and the active alumina, reduces the production cost and ensures the stable and efficient operation of the device.
The above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and any modifications or equivalent substitutions without departing from the spirit and scope of the present utility model should be covered in the scope of the technical solution of the present utility model.
Claims (9)
1. The system is characterized by comprising a water separation module, a water separation module and a water separation module, wherein the water separation module is used for receiving and treating pure water-containing working solution discharged from an extraction tower;
the heater is communicated with the working solution outlet end of the water separation module;
the flash evaporation dehydration module is communicated with the liquid outlet end of the heater;
and the clay bed is communicated with the liquid outlet end of the flash evaporation dehydration module.
2. The system for removing water from a working fluid in the production of hydrogen peroxide according to claim 1, wherein the flash dehydration module comprises a dehydrator and a vacuum pump, the dehydrator is communicated with the liquid outlet end of the heater, the clay bed is communicated with the liquid outlet end of the dehydrator, and the vacuum pump is communicated with the dehydrator.
3. The system for removing water from working fluid in hydrogen peroxide production according to claim 2, wherein two sets of dehydrators are provided, the input ends of the two sets of dehydrators are communicated with the liquid outlet end of the heater through liquid inlet pipes, the output ends of the two sets of dehydrators are communicated with clay beds through liquid outlet pipes, and the vacuum pump is communicated with the two sets of dehydrators through air exhaust pipes.
4. A system for removing water from a working fluid in the production of hydrogen peroxide according to claim 3, wherein control valves are provided on all of the liquid inlet pipe, the liquid outlet pipe and the air exhaust pipe.
5. The system for removing water from the working fluid in the production of hydrogen peroxide according to claim 1, wherein a thermometer is communicated with the liquid outlet end of the heater.
6. The system for removing water from a working fluid in the production of hydrogen peroxide according to claim 1, wherein the water separation module comprises a coalescer, an input end of the coalescer is communicated with a liquid outlet end of the extraction tower, and the heater is communicated with a working fluid outlet end of the coalescer.
7. The system for removing water from a working fluid in the production of hydrogen peroxide according to claim 6, wherein a plurality of groups of hydrophilic coalescing filter elements are arranged inside the coalescer.
8. The system for removing water from a working fluid in the production of hydrogen peroxide according to claim 7, wherein a water dividing bag is communicated with the coalescer, and a drain pipe is arranged on the water dividing bag.
9. The system for removing water from the working fluid in the production of hydrogen peroxide according to claim 1, wherein an activated alumina filler layer is arranged inside the clay bed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320793023.7U CN219681713U (en) | 2023-04-11 | 2023-04-11 | Working solution moisture removal system in hydrogen peroxide production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320793023.7U CN219681713U (en) | 2023-04-11 | 2023-04-11 | Working solution moisture removal system in hydrogen peroxide production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219681713U true CN219681713U (en) | 2023-09-15 |
Family
ID=87941147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320793023.7U Active CN219681713U (en) | 2023-04-11 | 2023-04-11 | Working solution moisture removal system in hydrogen peroxide production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219681713U (en) |
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2023
- 2023-04-11 CN CN202320793023.7U patent/CN219681713U/en active Active
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