CN219848250U - Extraction tower for producing high-concentration hydrogen peroxide - Google Patents
Extraction tower for producing high-concentration hydrogen peroxide Download PDFInfo
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- CN219848250U CN219848250U CN202320340407.3U CN202320340407U CN219848250U CN 219848250 U CN219848250 U CN 219848250U CN 202320340407 U CN202320340407 U CN 202320340407U CN 219848250 U CN219848250 U CN 219848250U
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- Prior art keywords
- hydrogen peroxide
- layer
- producing high
- extraction tower
- concentration hydrogen
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- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 title claims abstract description 58
- 238000000605 extraction Methods 0.000 title claims abstract description 44
- 239000007788 liquid Substances 0.000 claims abstract description 27
- 239000000945 filler Substances 0.000 claims abstract description 23
- 230000003647 oxidation Effects 0.000 claims abstract description 21
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 21
- 238000012856 packing Methods 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 238000000926 separation method Methods 0.000 claims abstract description 7
- 238000005056 compaction Methods 0.000 claims abstract description 4
- 239000011148 porous material Substances 0.000 claims description 12
- 229910001220 stainless steel Inorganic materials 0.000 claims description 9
- 239000010935 stainless steel Substances 0.000 claims description 9
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 3
- -1 polypropylene Polymers 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000011324 bead Substances 0.000 description 4
- 239000012224 working solution Substances 0.000 description 3
- 238000004581 coalescence Methods 0.000 description 2
- AKIIJALHGMKJEJ-UHFFFAOYSA-N (2-methylcyclohexyl) acetate Chemical compound CC1CCCCC1OC(C)=O AKIIJALHGMKJEJ-UHFFFAOYSA-N 0.000 description 1
- SNDGLCYYBKJSOT-UHFFFAOYSA-N 1,1,3,3-tetrabutylurea Chemical compound CCCCN(CCCC)C(=O)N(CCCC)CCCC SNDGLCYYBKJSOT-UHFFFAOYSA-N 0.000 description 1
- 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 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
- 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 1
- 150000004056 anthraquinones Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 238000000622 liquid--liquid extraction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
The utility model discloses an extraction tower for producing high-concentration hydrogen peroxide, which comprises a tower body, wherein an oxidation liquid distributor is arranged at the lower part of the tower body, a pure water distributor is arranged at the upper part of the tower body, a plurality of first packing layers and a plurality of sieve plates are arranged between the oxidation liquid distributor and the pure water distributor, and the first packing layers and the sieve plates are alternately arranged; each layer of first filler layer consists of a lower layer of supporting grid plate, a middle coalescent filler and an upper layer of compaction grid plate, each layer of screen plate is provided with downcomers, and the downcomers of two adjacent screen plates are arranged in a staggered manner in a crossed manner; the upper part of the pure water distributor is also provided with a second packing layer, the upper part of the second packing layer is provided with a raffinate outlet, and the lower part of the oxidation liquid distributor is provided with an extract outlet. The utility model can improve the extraction and separation effect of the extraction tower and produce high-concentration hydrogen peroxide on the premise of ensuring the raffinate.
Description
Technical Field
The utility model relates to the technical field of chemical industry, relates to hydrogen peroxide production, and in particular relates to an extraction tower structure for producing high-concentration hydrogen peroxide.
Background
At present, most of domestic hydrogen peroxide production devices adopt an anthraquinone method fixed bed process, 2-ethyl anthraquinone is adopted as a carrier, and a plurality of C9-C10 heavy aromatics, trioctyl phosphate, o-methylcyclohexyl acetate and tetrabutyl urea are adopted as solvents to prepare working solution, and hydrogen peroxide products are obtained through the procedures of hydrogenation, oxidation, extraction, purification and the like.
The principle of hydrogen peroxide extraction is that the density difference between working solution and water and the difference of the solution degree of hydrogen peroxide in the water and the working solution are utilized to carry out liquid-liquid separation, pure water as a continuous phase is fed into the extraction from the upper part of an extraction tower into a distributor, oxidation liquid as a disperse phase is fed into the extraction tower from the lower part of the extraction tower, countercurrent mass transfer exchange is carried out at a filler and a sieve plate, and the extraction liquid flowing out from the bottom of the extraction tower is hydrogen peroxide product and raffinate flowing out from the top of the extraction tower.
The traditional hydrogen peroxide extraction towers are mostly of full-screen plate structures, the distance between every two screen plates is about 500mm, the number of the screen plate layers is 50-60, the height of the extraction towers is more than 40-45m, and the extraction efficiency is low because the extraction towers of the screen plate structures often have the condition of back mixing of the plate distances, so that the hydrogen peroxide concentration in the raffinate is often lower than 30% (wt) in order to ensure the safe operation index that the hydrogen peroxide content in the raffinate is less than 0.3g/L, and the high-concentration hydrogen peroxide product is difficult to obtain.
Disclosure of Invention
The utility model provides an extraction tower for producing high-concentration hydrogen peroxide, which can effectively improve the extraction effect, reduce the two-phase return and entrainment in the extraction process, and effectively ensure the safety and stability of a production device while improving part of productivity.
The extraction tower for producing high-concentration hydrogen peroxide comprises a tower body, wherein an oxidation liquid distributor is arranged at the lower part of the tower body, a pure water distributor is arranged at the upper part of the tower body, a plurality of first packing layers and a plurality of sieve plates are arranged between the oxidation liquid distributor and the pure water distributor, and the first packing layers and the sieve plates are alternately arranged; each layer of first filler layer consists of a lower layer of supporting grid plate, a middle coalescent filler and an upper layer of compaction grid plate, each layer of screen plate is provided with downcomers, and the downcomers of two adjacent screen plates are arranged in a staggered manner in a crossed manner; the upper part of the pure water distributor is also provided with a second packing layer, the upper part of the second packing layer is provided with a raffinate outlet, and the lower part of the oxidation liquid distributor is provided with an extract outlet.
Further, the oxidation liquid distributor and the pure water distributor are both calandria distribution structures, the main branch pipe is connected through a flange, and a plurality of openings are formed in the branch pipe.
Further, the aperture of the branch pipe is 5-10mm.
Further, the coalescing filler is formed by arranging 2-3 layers of stainless steel pore plate corrugated coalescing fillers in a crossed mode, and an included angle between every two adjacent layers of stainless steel pore plate corrugated coalescing fillers is 90 degrees.
Further, the screen plate is formed by splicing a plurality of pieces, and is fixedly connected by virtue of a main beam and a supporting beam.
Further, the sieve plate is provided with a plurality of holes, the aperture is 1-5mm, and the connecting line of the circle centers of the adjacent three holes is in a regular triangle.
Further, the downcomers of two adjacent sieve plates are arranged in a staggered manner in a crossed manner between the periphery and the center.
Further, the second filler layer is a polypropylene pore plate corrugated coalescence-separation filler.
The beneficial effects of the utility model are as follows:
the corrugated packing layer of the stainless steel pore plate can effectively reduce back mixing among the sieve plates and improve the effect of liquid-liquid extraction. The oxidized liquid oil beads float upwards at a certain flow rate after being dispersed through the holes of the sieve plate, the small oil beads are coalesced into large oil beads on the packing layer, and the large oil beads are dispersed again through the holes of the sieve plate, so that the repeated circulation is realized, and the effect of the extraction tower is ensured.
According to the utility model, through the cross arrangement of the corrugated packing layers of the stainless steel pore plates and the arrangement mode of the centers around the liquid dropping holes of the sieve plates, the number of the sieve plates can be reduced to 30-35 layers, the plate spacing is increased to 700-800mm, the design height of the extraction tower is 35-40m, the original extraction tower equipment is reduced, the consumption of system working liquid is reduced, and the cost is reduced.
The utility model can improve the extraction and separation effect of the extraction tower and produce high-concentration hydrogen peroxide on the premise of ensuring the raffinate. When the utility model is adopted to produce hydrogen peroxide, when the concentration of the extract is 27.5% (wt), the raffinate content is less than 0.1g/L, and when the concentration of the extract is 35% (wt), the raffinate content is less than 0.15g/L, thus ensuring the continuous, stable and safe operation of the production device.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model.
Detailed Description
The utility model will be further elucidated with reference to the examples and the accompanying drawings.
As shown in fig. 1, the utility model comprises a tower body, wherein the lower part of the tower body is provided with an oxidation liquid distributor 6, the upper part of the tower body is provided with a pure water distributor 2, a plurality of first packing layers 4 and a plurality of sieve plates 3 are arranged between the oxidation liquid distributor and the pure water distributor, and the first packing layers and the sieve plates are alternately arranged; each layer of first filler layer consists of a lower layer of supporting grid plate, a middle coalescent filler and an upper layer of compaction grid plate, each layer of screen plate is provided with downcomers, and the downcomers of two adjacent screen plates are arranged in a staggered manner in a crossed manner; the upper part of the pure water distributor is also provided with a second packing layer 1, the upper part of the second packing layer is provided with a raffinate outlet, and the lower part of the oxidation liquid distributor is provided with an extract outlet 7.
In the preferred scheme, oxidation liquid distributor and pure water distributor are calandria distribution structure, and the main branch pipe passes through flange joint, sets up a plurality of trompils on the branch pipe. Preferably the open pore diameter of the branch pipe is 5-10mm. The supporting piece and the fastening piece can be arranged to fix the distributor, so that the levelness of the distributor is ensured;
in the preferred scheme, the coalescing filler is formed by intersecting 2-3 layers of stainless steel pore plate corrugated coalescing fillers, and an included angle between every two adjacent layers of stainless steel pore plate corrugated coalescing fillers is 90 degrees.
In the preferred scheme, the sieve is formed by the concatenation of polylith, relies on girder and corbel to connect fixedly.
In the preferred scheme, a plurality of holes are formed in the sieve plate, the aperture is 1-5mm, and the connecting line of the circle centers of the adjacent three holes is in a regular triangle.
In the preferred scheme, the downcomers of two adjacent sieve plates are arranged in a staggered manner in a crossed manner between the periphery and the center. Wherein, when the downcomer is arranged around, the number of the downcomers is 4, and the pipe diameter is DN100; the downcomer is arranged in the middle, and one downcomer is arranged, and the pipe diameter DN200 is arranged.
In a preferred embodiment, the second filler layer is a polypropylene orifice plate corrugated coalescing separation filler.
During specific extraction, the oxidation liquid enters the extraction tower through the distributor, floats upwards due to density difference, is subjected to coalescence and separation at the corrugated filler of the stainless steel pore plate, is further dispersed through the sieve plate, hydrogen peroxide in the oxidation liquid is extracted by pure water in the continuous coalescence and dispersion process to obtain a hydrogen peroxide product with a certain concentration, the oxidation liquid after extraction flows out from the upper part of the extraction tower to the next process, and in the process, the temperature of the extraction tower is controlled at 48-53 ℃, and the ratio of the flow rate of the oxidation liquid to the flow rate (volume flow rate) of the extraction liquid is about 38-50:1.
In a 10 ten thousand ton scale production device, the temperature of an extraction tower is 50 ℃, and the flow rate of oxidizing liquid is 450m 3 And/h, the flow rate of the extract is 9.5m 3 And/h, extraction concentration 32.92% (wt), and raffinate content 0.12g/L.
Claims (8)
1. An extraction tower for producing high-concentration hydrogen peroxide, which is characterized in that: the tower comprises a tower body, wherein an oxidation liquid distributor is arranged at the lower part of the tower body, a pure water distributor is arranged at the upper part of the tower body, a plurality of first packing layers and a plurality of sieve plates are arranged between the oxidation liquid distributor and the pure water distributor, and the first packing layers and the sieve plates are alternately arranged; each layer of first filler layer consists of a lower layer of supporting grid plate, a middle coalescent filler and an upper layer of compaction grid plate, each layer of screen plate is provided with downcomers, and the downcomers of two adjacent screen plates are arranged in a staggered manner in a crossed manner; the upper part of the pure water distributor is also provided with a second packing layer, the upper part of the second packing layer is provided with a raffinate outlet, and the lower part of the oxidation liquid distributor is provided with an extract outlet.
2. The extraction tower for producing high-concentration hydrogen peroxide according to claim 1, wherein: the oxidation liquid distributor and the pure water distributor are of calandria distribution structures, the main branch pipe is connected through a flange, and a plurality of open holes are formed in the branch pipe.
3. The extraction tower for producing high-concentration hydrogen peroxide according to claim 2, wherein: the aperture of the branch pipe is 5-10mm.
4. The extraction tower for producing high-concentration hydrogen peroxide according to claim 1, wherein: the coalescing filler is formed by intersecting 2-3 layers of stainless steel pore plate corrugated coalescing fillers, and an included angle between every two adjacent layers of stainless steel pore plate corrugated coalescing fillers is 90 degrees.
5. The extraction tower for producing high-concentration hydrogen peroxide according to claim 1, wherein: the sieve plate is formed by splicing a plurality of blocks, and is fixedly connected by virtue of a main beam and a supporting beam.
6. The extraction tower for producing high-concentration hydrogen peroxide according to claim 1, wherein: the sieve plate is provided with a plurality of holes, the aperture is 1-5mm, and the connecting line of the circle centers of the adjacent three holes is in a regular triangle.
7. The extraction tower for producing high-concentration hydrogen peroxide according to claim 1, wherein: the downcomers of two adjacent sieve plates are arranged in a staggered manner in a crossed manner between the periphery and the center.
8. The extraction tower for producing high-concentration hydrogen peroxide according to claim 1, wherein: the second packing layer is polypropylene pore plate corrugated coalescent separation packing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320340407.3U CN219848250U (en) | 2023-02-28 | 2023-02-28 | Extraction tower for producing high-concentration hydrogen peroxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320340407.3U CN219848250U (en) | 2023-02-28 | 2023-02-28 | Extraction tower for producing high-concentration hydrogen peroxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219848250U true CN219848250U (en) | 2023-10-20 |
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ID=88317765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320340407.3U Active CN219848250U (en) | 2023-02-28 | 2023-02-28 | Extraction tower for producing high-concentration hydrogen peroxide |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219848250U (en) |
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2023
- 2023-02-28 CN CN202320340407.3U patent/CN219848250U/en active Active
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