CN203545677U - Hydrogen peroxide extraction tower - Google Patents
Hydrogen peroxide extraction tower Download PDFInfo
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- CN203545677U CN203545677U CN201320650195.5U CN201320650195U CN203545677U CN 203545677 U CN203545677 U CN 203545677U CN 201320650195 U CN201320650195 U CN 201320650195U CN 203545677 U CN203545677 U CN 203545677U
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- extraction tower
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- 238000000605 extraction Methods 0.000 title claims abstract description 103
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 title claims abstract description 73
- 238000012546 transfer Methods 0.000 claims abstract description 23
- 230000003014 reinforcing effect Effects 0.000 claims description 15
- 238000005204 segregation Methods 0.000 claims description 15
- 239000000945 filler Substances 0.000 claims description 8
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000012856 packing Methods 0.000 claims description 4
- 239000006260 foam Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 14
- 238000005191 phase separation Methods 0.000 abstract 4
- 239000012071 phase Substances 0.000 description 51
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 239000012530 fluid Substances 0.000 description 9
- 239000007788 liquid Substances 0.000 description 7
- 238000013461 design Methods 0.000 description 6
- 239000007791 liquid phase Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 238000005728 strengthening Methods 0.000 description 4
- 238000004581 coalescence Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 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 2
- 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 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- 241000521257 Hydrops Species 0.000 description 2
- 206010030113 Oedema Diseases 0.000 description 2
- 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
- 150000004056 anthraquinones Chemical class 0.000 description 2
- 229910001882 dioxygen Inorganic materials 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 239000012263 liquid product Substances 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000008207 working material Substances 0.000 description 1
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- Extraction Or Liquid Replacement (AREA)
Abstract
The utility model discloses a hydrogen peroxide extraction tower, comprising a strengthened light phase-heavy phase separation section and a strengthened light phase-heavy phase mass transfer section. The strengthened light phase-heavy phase separation section is located at the top of the extraction tower, a heavy phase inlet is arranged at the upper part of the strengthened light phase-heavy phase separation section, and a light phase extraction outlet is arranged at the upper part of the strengthened light phase-heavy phase separation section; the strengthened light phase-heavy phase mass transfer section is located at the bottom of the extraction tower; a light phase inlet is arranged at the upper part of the strengthened light phase-heavy phase mass transfer section and a heavy phase extraction outlet is arranged at the lower part of the strengthened light phase-heavy phase mass transfer section. Sieve meshes are evenly distributed on the tower plates; a circular downcomer is connected to the bottom of the tower plate of each layer; and a zigzag downflow baffle plate is arranged in the downcommer. The tower provided by the utility model is stable in operating performance, high in operating flexibility, and not easy to flood; and therefore, the extraction effect can be greatly strengthened, the extraction efficiency is improved by 5%-30% in comparison with that of the common extraction tower, and the raffinate at the top of the tower is reduced to be below 0.1g/L.
Description
Technical field
The utility model relates to a kind of extraction column of hydrogen peroxide, particularly a kind of extraction column of hydrogen peroxide that improves effect of extracting, reduces raffinate.
Background technology
The suitability for industrialized production of hydrogen peroxide mainly adopts anthraquinone in the world at present, hydrogen dioxide solution production by anthraquinone process technique is that to take 2-ethyl-anthraquinone (EAQ) be working material, take heavy aromatics (Ar) and trioctyl phosphate (TOP) is made into working fluid as solvent, through over hydrogenation, oxidation, extraction and the several operations of working fluid aftertreatment.Therefore wherein extraction process is at hydrogen peroxide production process in occupation of very important status, and can the quality of this process operation directly affects device go out qualified product, for the design studies of extraction tower and the operating performance particularly important that just seems.
Hydrogen peroxide extraction principle be utilize the density difference of working fluid and water and hydrogen peroxide in water with the difference of solubleness in working fluid and carry out separated, water adds from extraction tower top, as external phase, from downtake, flow downward, working fluid enters extraction tower from tower bottom, as disperse phase, through column plate, be dispersed into small droplets floating to tower top, the extraction liquid obtaining at the bottom of last extraction tower is hydrogen peroxide product, and tower top is that the working fluid after extraction becomes raffinate.
The effect of extracting of existing industrial extraction column of hydrogen peroxide is not desirable especially at present, when operation, ubiquity extraction efficiency is low, extract low, raffinate is high, the device problems such as turndown ratio is little, trace it to its cause and have close relationship with the structure such as the design of extraction tower, downtake design.In order to improve the effect of extracting of extraction tower, improve existing extraction levels, Many researchers was once done relevant research at the design aspect of extraction tower.
CN2439311A discloses a kind of extraction tower for extracting hydrogen peroxide, makes screen-aperture increase successively along tower height in tray designs from bottom to top, and object is that working fluid still can pass through column plate tower smoothly in the situation that the top hydrops layer of tower is thicker; The less column plate aperture of the thin employing of accumulating at lower part liquid layer, can improve working fluid perforation flow velocity, improves rate of mass transfer.In addition, CN2210889A is disclosed be also a kind of column plate aperture from bottom to top, gradient linear by φ 2 increase gradually the extraction tower of φ 3.5.
In above patent, extraction tower screen-aperture increases from the bottom to top gradually, object is along with the increase hydrops layer thickness of tower height increases gradually, screen-aperture increase can improve liquid communication ability, prevent extraction tower buildup, can, for working fluid provides rational flow velocity at the perforation flow velocity of extraction tower column plate, improve effect of extracting simultaneously.But because extraction tower column plate of the prior art is generally 50～60 layers of left and right, when successively increasing progressively from the bottom to top, perforated area because difference between upper and lower two boards is too little, in industrial realization, has certain difficulty.In addition, the mobility status of external phase also can affect and the mass transfer of disperse phase, separated etc. in downtake, effect of extracting is also had a certain impact.
Summary of the invention
For the deficiencies in the prior art, the utility model provides a kind of extraction column of hydrogen peroxide, this extraction tower have extraction efficiency high, device elasticity large, raffinate is low, be difficult for the advantages such as liquid flooding.
Extraction column of hydrogen peroxide of the present utility model, comprising: back taper extraction tower, weight are strengthened segregation section, weight phase reinforcing mass transfer section mutually; Weight is strengthened mutually segregation section and is positioned at extraction tower top, and weight is strengthened mutually segregation section bottom heavy phase admission port is set, and top arranges light phase outlet; Weight phase reinforcing mass transfer section is positioned at extraction tower bottom, and weight phase reinforcing mass transfer section top arranges light phase admission port, and bottom arranges heavy phase outlet.
Extraction column of hydrogen peroxide of the present utility model, its structure can be turbination extraction tower, can be also inverted steps shape extraction tower, its diameter increases continuously from bottom to top or becomes stepped increase along tower height.
Extraction column of hydrogen peroxide of the present utility model, turbination extraction tower top diameter increases by 5%～40% than base diameter; Inverted steps shape extraction tower is comprised of 2～20 shell rings, and between adjacent cylindrical section, tower diameter increasing degree is 1%～40% from bottom to top.
Extraction column of hydrogen peroxide of the present utility model, stage number is 40～60 layers, column plate aperture homogeneous.Extraction tower column plate bore dia is Ф 1.6 ~ Ф 2.6mm, and percentage of open area is 8% ~ 14%.Taper extraction tower structure can be on all column plates under screen-aperture and the percentage of open area prerequisite that do not need to change, only by changing the perforation flow velocity of disperse phase in tower wall profile control tower, thereby improve rate of mass transfer and the plate efficiency of two-phase.
Extraction column of hydrogen peroxide of the present utility model, every layer of column plate below is connected with circular downeomer, and each downtake inwall is provided with "the" shape down flow apron, and down flow apron is welded by bar steel plate in a zigzag.Due to heavy external phase by upper strata column plate when downtake falls on the light disperse phase liquid level between plate, liquid level is had to certain impact and splash, can disturb dispersion again and the coalescence of light disperse phase on the one hand, thereby affect separating effect; Cause on the other hand carrying secretly and back-mixing of two-phase, affect too separating effect.In downtake, arrange after "the" shape down flow apron, can control the mobility status of external phase, reduce the impact to disperse phase liquid level.
Extraction column of hydrogen peroxide of the present utility model, weight is strengthened segregation section mutually mainly by 1～10 combined stuffing cell formation, and combined stuffing unit is by overlapped the forming of filler of dispersed phase drop being played to coalescence effect.The filler that dispersed phase drop is played to coalescence effect is selected from Raschig ring, Pall ring, rectangular saddle ring, perforated foams, arc etc.
Extraction column of hydrogen peroxide of the present utility model, described weight phase reinforcing mass transfer section is mainly by 1～10 combined stuffing cell formation, and combined stuffing unit is by disperse phase being played to the filler of crushing effect.The filler that disperse phase is played to breakup of drop effect is selected from screen waviness packings, presses perforated plate corrugated filler, grid packing, honeycomb filler etc.
The effect that extraction column of hydrogen peroxide of the present utility model reaches is: extraction tower load in 40%～135% scope of self design loading, change can make raffinate in hydrogen peroxide content lower than 0.1g/L, extraction liquid product concentration is 27.5～35wt%.
Advantage of the present utility model is as follows:
(1) adopt back taper or inverted steps shape extraction tower structure, by changing in tower wall profile control tower, disperse
The perforation flow velocity of phase, thereby rate of mass transfer and the plate efficiency of raising two-phase.
(2) tower top arranges weight and strengthens mutually segregation section, can strictly control remaining hydrogen peroxide content in tower top raffinate and, in lower level, be conducive to safe and stable arrangement operation.
(3) weight phase reinforcing mass transfer section is set at the bottom of tower, is conducive to further improve product concentration.
(4) down flow apron is in a zigzag set in downtake, can reduces mutually carrying secretly between light phase and heavy phase, improve extraction efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation of turbination extraction tower of the present utility model;
Fig. 2 is the structural representation of inverted steps shape extraction tower of the present utility model;
Fig. 3 is the enlarged diagram of extraction column of hydrogen peroxide downtake of the present utility model " it " word baffle plate.
Wherein 1 is extraction tower, 2 is heavy phase (water) entrance, 3 is light phase (oxidation solution) entrance, 4 is light phase (raffinate) outlet, and 5 is heavy phase (hydrogen peroxide product), and 6 is column plate, 7 is downtake, 8 is weight phase (water and work liquid phase) strengthening segregation section, and 9 is weight phase (dioxygen water and work liquid phase) reinforcing mass transfer section, and 10 is zigzag down flow apron.
Embodiment
The drawings and Examples of using method and effect below in conjunction with to(for) the utility model extraction tower further illustrate, but are not subject to the restriction of following embodiment.
Operating process of the present utility model is as follows: first light phase (oxidation solution) 3 added from the bottom of extraction tower 1, floating gradually from bottom to top through column plate 6, heavy phase (pure water) 2 adds from extraction tower top, through downtake 7 and after by zigzag down flow apron 10 adjustment fluidised forms, arrives lower one deck column plate.Light phase (work liquid phase) and heavy phase (water) are after counter-current extraction, light phase (work liquid phase) light phase export 4 from tower top after weight is strengthened segregation section 8 mutually flows out, and heavy phase (dioxygen water) is heavy out 5 extraction at the bottom of tower after weight phase reinforcing mass transfer section 9.
Extraction column of hydrogen peroxide of the present utility model, service temperature is 50～55 ℃, and the volume flow ratio of extraction agent water and oxidation solution charging is 40:1～65:1, and working pressure is normal pressure.
Comparative example 1
Hydrogen peroxide plain cylindrical form extraction tower, diameter is 800mm, 55 layers of column plate, tower top is strengthened segregation section without heavy phase, and at the bottom of tower, without weight phase reinforcing mass transfer section, downtake is empty.During for 100% operational load, at the bottom of extraction tower, hydrogen peroxide concentration is 22.5wt%～23.7wt%, and in extraction tower top raffinate, remaining hydrogen peroxide content is 0.25g/L～0.3g/L.
Adopt turbination extraction tower, 40 layers of column plate, at the bottom of tower, diameter is 600mm, and tower top diameter is 1000mm, and tower top is established heavy phase strengthening segregation section, establishes weight phase reinforcing mass transfer section at the bottom of tower, establishes down flow apron in a zigzag in downtake.During for 100% operational load, hydrogen peroxide concentration 30wt%～33wt% at the bottom of extraction tower, in extraction tower top raffinate, remaining hydrogen peroxide content is below 0.10g/ L.
Adopt the stepped extraction tower of back taper, 5 shell rings, consist of, shell ring diameter is for being respectively 600mm, 700mm, 800mm, 900mm, 1000mm, 40 layers of column plate, tower top is established heavy phase strengthening segregation section, establishes weight phase reinforcing mass transfer section at the bottom of tower, establishes down flow apron in a zigzag in downtake.During for 50% operational load, hydrogen peroxide concentration 28.8wt%～31.5wt% at the bottom of extraction tower, in extraction tower top raffinate, remaining hydrogen peroxide content is below 0.12g/ L.
Adopt turbination extraction tower, 40 layers of column plate, at the bottom of tower, diameter is 600mm, and tower top diameter is 1000mm, and tower top is established heavy phase strengthening segregation section, establishes weight phase reinforcing mass transfer section at the bottom of tower, establishes down flow apron in a zigzag in downtake.The utility model extraction tower, during for 120% operational load, hydrogen peroxide concentration 29.5wt%～32.0wt% at the bottom of extraction tower, in extraction tower top raffinate, remaining hydrogen peroxide content is below 0.10g/ L.
Claims (9)
1. an extraction column of hydrogen peroxide, is characterized in that comprising: back taper extraction tower, weight are strengthened segregation section, weight phase reinforcing mass transfer section mutually; Weight is strengthened mutually segregation section and is positioned at extraction tower top, and weight is strengthened mutually segregation section bottom heavy phase admission port is set, and top arranges light phase outlet; Weight phase reinforcing mass transfer section is positioned at extraction tower bottom, and weight phase reinforcing mass transfer section top arranges light phase admission port, and bottom arranges heavy phase outlet.
2. according to extraction tower claimed in claim 1, it is characterized in that: back taper extraction tower is turbination extraction tower, extraction tower diameter increases from bottom to top continuously along tower height.
3. according to extraction tower claimed in claim 1, it is characterized in that: back taper extraction tower is inverted steps shape extraction tower, extraction tower diameter is along tower height stepped increase from bottom to top.
4. according to extraction tower claimed in claim 2, it is characterized in that: turbination extraction tower top diameter increases by 5%～40% than base diameter.
5. according to extraction tower claimed in claim 3, it is characterized in that: inverted steps shape extraction tower is comprised of 2～20 shell rings, between adjacent cylindrical section, tower diameter increasing degree is 1%～40% from bottom to top.
6. according to extraction tower claimed in claim 1, it is characterized in that: extraction tower stage number is 40～60 layers column plate aperture homogeneous.
7. according to extraction tower claimed in claim 6, it is characterized in that: extraction tower column plate below is connected with circular downeomer, and downtake inwall is provided with "the" shape down flow apron.
8. according to extraction tower claimed in claim 1, it is characterized in that: weight is strengthened segregation section mutually by 1～10 combined stuffing cell formation, and combined stuffing is selected from Raschig ring, Pall ring, rectangular saddle ring, perforated foams, arc.
9. according to extraction tower claimed in claim 1, it is characterized in that: weight phase reinforcing mass transfer section is by 1～10 combined stuffing cell formation, and combined stuffing is selected from screen waviness packings, presses perforated plate corrugated filler, grid packing, honeycomb filler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320650195.5U CN203545677U (en) | 2013-10-22 | 2013-10-22 | Hydrogen peroxide extraction tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320650195.5U CN203545677U (en) | 2013-10-22 | 2013-10-22 | Hydrogen peroxide extraction tower |
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| Publication Number | Publication Date |
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| CN203545677U true CN203545677U (en) | 2014-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320650195.5U Expired - Lifetime CN203545677U (en) | 2013-10-22 | 2013-10-22 | Hydrogen peroxide extraction tower |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109626337A (en) * | 2019-01-28 | 2019-04-16 | 安徽晋煤中能化工股份有限公司 | A kind of suspension bed hydrogen peroxide extraction device |
| CN115608002B (en) * | 2022-12-16 | 2023-03-17 | 中国科学院过程工程研究所 | Device and method for enhancing extraction of phosphate ore acidolysis slurry |
-
2013
- 2013-10-22 CN CN201320650195.5U patent/CN203545677U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109626337A (en) * | 2019-01-28 | 2019-04-16 | 安徽晋煤中能化工股份有限公司 | A kind of suspension bed hydrogen peroxide extraction device |
| CN115608002B (en) * | 2022-12-16 | 2023-03-17 | 中国科学院过程工程研究所 | Device and method for enhancing extraction of phosphate ore acidolysis slurry |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140416 |