CN100348287C - Jet tray with large liquid holdup - Google Patents
Jet tray with large liquid holdup Download PDFInfo
- Publication number
- CN100348287C CN100348287C CNB2005100147505A CN200510014750A CN100348287C CN 100348287 C CN100348287 C CN 100348287C CN B2005100147505 A CNB2005100147505 A CN B2005100147505A CN 200510014750 A CN200510014750 A CN 200510014750A CN 100348287 C CN100348287 C CN 100348287C
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- plate
- column
- jet
- column plate
- liquid
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- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The present invention relates to a jet column plate with large liquid holding capacity. The column plate has a jet unit structure that ascension pipes are regularly arrayed on the column plate, a jet cover is installed on each of the ascension pipes, a gap exists between the jet cover and each of the ascension pipes, a jet hole is arranged on the jet cover, and a gas and liquid separating plate is arranged above the jet cover. Compared with the common bubble-cap column, float valve column, sieve-plate column, etc., the column plate has the advantages of low pressure drop, great operating flexibility and easy adjustment and control, and the column plate can perfectly satisfy the technical requirement of reaction distillation. The quantity of held liquid on the column plate can be freely adjusted so that reaction time is controlled. When the column plate spacing is the conventional 600mm, the height of supernatant liquid can be randomly adjusted within the range of 20 to 400mm, and the requirement of the quantity of the held liquid of the reaction distillation is satisfied. Meanwhile, within the height range of the liquid layer, the pressure drop of a single-layer column plate is less than 0.6 Kpa, and kinetic energy factors of an empty column reach more than 2.0 Pa <0.5>.
Description
Technical field
The present invention relates to the gas-liquid mass transfer (contact) equipment in the Chemical Engineering reactive distillation processes, is a kind of jet tray with large liquid holdup specifically.
Background technology
Reactive distillation is a kind of novel separating technology with wide application prospect.Reaction and separation process are finished in reaction fractionating tower simultaneously, the liquid holdup decision time of staying of liquid in tower on the column plate is the reaction time, past, the normal bigger plate column of liquid holdup that adopts in reactive distillation processes, majority is bubble column, valve tower, sieve-plate tower etc. or the modified column plate that adopts above column plate.Because technological requirement liquid has enough time of staying in tower, all need to improve height of weir plate when adopting these column plates, make height of liquid layer on the plate reach the requirement in reaction time, but this moment plate pressure drop big, operating flexibility is little and restive, disposal ability is less simultaneously, plate efficiency is on the low side.
Summary of the invention
The object of the present invention is to provide a kind of jet tray with large liquid holdup, can overcome the shortcoming of prior art.The height of liquid layer can be adjusted in very big altitude range according to technological requirement on this column plate, has advantages such as liquid holdup is big, efficient is high, operating flexibility is big, plate pressure drop is low simultaneously, can satisfy the technological requirement of reactive distillation well.
The present invention includes injection unit on column plate, the column plate, down-flow plate, seal pot formation; The structure of injection unit is the riser of regular arrangement on column plate, the riser height can be adjusted as required, and each riser matches a jet cover is installed, and leaves the slit between jet cover and the riser, have spray-hole on the jet cover, the gas-liquid separation plate is installed in the top of jet cover.
Described down-flow plate height of weir plate can be adjusted in the 20-400mm scope;
Have regularly arranged rectangle, trapezoidal or circular plate hole on the described column plate, row's number in hole is 1-20; Open ratio of plate 1～20%, described riser height 0～300mm.
Corresponding rectangle, trapezoidal or circular riser are installed on described each plate hole, and folded angle is 45-135 ° between riser and the column plate;
Slit between described jet cover and the riser is: 1～30mm;
Described separating plate can be provided with a separating plate by 1-5 jet cover.
The present invention has following advantage, and when tray spacing was the 600mm of routine, column plate supernatant layer height can be adjusted arbitrarily in the 20-400mm scope, to satisfy reactive distillation to holding the requirement of liquid liquid measure.In this height of liquid layer scope, individual layer column plate pressure falls less than 0.6KPa simultaneously, and the void tower kinetic energy factor reaches 2.0 Pa
0.5More than, operating flexibility, column plate separative efficiency all are not less than common column plate.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is Fig. 1 vertical view.
The specific embodiment
Specific embodiments of the present invention are described in detail as follows with reference to accompanying drawing:
As shown in the figure, 1 down-flow plate, 2 column plates, 3 riseies, 4 jet covers, 5 separating plates, 6 tower bodies, 7 seal pots.The structure of injection unit is the riser 3 of regular arrangement on column plate 2, riser 3 highly can be adjusted as required, each riser 3 matches a jet cover 4 is installed, leave the slit between jet cover 4 and the riser 3, have spray-hole on the jet cover, gas-liquid separation plate 5 is installed in the top of jet cover 4.
Gas enters in the jet cover 4 by riser 3 from the below of column plate 2, gas need not by the liquid layer on the column plate 2, when in gas enters jet cover 4, rising, liquid enters in the jet cover by crack, 4 end of jet cover, and blown the liquid film that pulls into by gas, liquid film is broken into drop under capillary effect in by the process of gas lift.This burst gas-liquid mixed stream is by spray-hole and injection channel ejection.Gas-liquid mixed stream part by the top ejection is injected on following one deck separating plate, and remaining can be ejected on top one deck separating plate by the air rising hole on following one deck separating plate.Drop falls back to column plate 2 surfaces under the effect of gravity after cohesion on the separating plate 5, gas is then walked around separating plate 5 in the effect of pressure reduction, rises to the last layer column plate.Fall back to the liquid on the column plate 2, then flow to down one deck column plate by downspout.
Application Example:
In φ 600 experiment towers, under the normal pressure, adopt air, water system to carry out cold mould experiment, Ta Nei establishes 1 layer of common valve plate and jet tray with large liquid holdup has carried out the contrast experiment.
Common board-like tower plate structure parameter is as follows:
Down-flow plate area/tower section amasss=14.2%, open ratio of plate 8.87% (21 φ 39 holes), distance between plates 500mm, height of weir 150mm, height 50mm in crack at the bottom of the downspout.
The jet tray with large liquid holdup structural parameters are as follows:
Down-flow plate area 14.2%, open ratio of plate 8.87% (4 30 * 210 rectangular openings), distance between plates 500mm, height of weir 150mm, height 50mm in crack at the bottom of the downspout.
Regulate the gas-liquid flow, the maintenance fluid flow is 10m
3/ h measure the plate pressure drop under the different gas phase loads of two kinds of column plates, and the maximum of two kinds of column plates allows the void tower kinetic energy factor.
The contrast experiment one, and gas flow is 1000m
3/ h, the following two kinds of plate pressure drops contrast of identical empty tower gas velocity:
| The column plate pattern | Plate pressure drop, mmH 2O |
| Common board-like column plate | 180 |
| Jet tray with large liquid holdup | 50 |
The contrast experiment two, and gas flow is 2000m
3/ h, two kinds of maximum void tower kinetic energy factors that allow of column plate:
| The column plate pattern | Plate pressure drop, mmH 2O |
| Common board-like column plate | 400 |
| Jet tray with large liquid holdup | 60 |
By above-mentioned contrast experiment as can be seen, under the identical operations working condition, jet tray with large liquid holdup pressure drop ratio tradition valve plate is much lower, (tests one) during underload and has reduced by 72%, (tests two) during high load capacity and has reduced by 85%.
With gas phase mist entrainment 10% is the upper limit, is 2.5 to the experimental result of the permission maximum kinetic energy factor of the jet tray with large liquid holdup of air-water system.
The present invention the experiment proved that: because the effect of riser, height of liquid layer is very little to the influence that column plate pressure falls on the column plate, when tray spacing is the 600mm of routine, column plate supernatant layer height can be adjusted arbitrarily in the 20-400mm scope, simultaneously in this height of liquid layer scope, column plate pressure falls and is generally less than 0.6KPa, and the void tower kinetic energy factor reaches 2.0Pa
0.5More than, operating flexibility, column plate separative efficiency all are not less than common column plate.
Claims (4)
1, a kind of jet tray with large liquid holdup, it comprises column plate, injection unit, down-flow plate and seal pot and jet cover on the column plate, have spray-hole on the jet cover, the gas-liquid separation plate is installed on the jet cover, it is characterized in that: described injection unit structure is that regularly arranged riser is installed on column plate, jet cover is installed above riser, leave the slit between jet cover and the riser, the height of described riser is between the 0-300mm, but is not 0.
2, according to the described jet tray with large liquid holdup of claim 1, what it is characterized in that described riser is shaped as rectangle, trapezoidal or circular;
3,, it is characterized in that the slit between described jet cover and the riser is 1～30mm according to the described jet tray with large liquid holdup of claim 1.
4,, it is characterized in that angle folded between described riser and the column plate is 45-135 ° according to the described jet tray with large liquid holdup of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100147505A CN100348287C (en) | 2005-08-18 | 2005-08-18 | Jet tray with large liquid holdup |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100147505A CN100348287C (en) | 2005-08-18 | 2005-08-18 | Jet tray with large liquid holdup |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1736528A CN1736528A (en) | 2006-02-22 |
| CN100348287C true CN100348287C (en) | 2007-11-14 |
Family
ID=36079598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100147505A Expired - Fee Related CN100348287C (en) | 2005-08-18 | 2005-08-18 | Jet tray with large liquid holdup |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100348287C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101474489B (en) * | 2008-12-25 | 2010-12-01 | 秦松 | Low-resistance column plate with large liquid holdup |
| CN102652882B (en) * | 2012-05-08 | 2014-12-10 | 武汉金中石化工程有限公司 | Fractionating tower kettle provided with air-lift combination partition plate |
| WO2016051372A1 (en) * | 2014-10-04 | 2016-04-07 | Jayawant Ravindra | Valve with floating cap and restraint assembly for deployment in valve trays of distillation columns |
| CN108097002A (en) * | 2017-12-29 | 2018-06-01 | 天津衡创工大现代塔器技术有限公司 | A kind of big liquid holdup ejection-type absorption tray |
| CN113941311B (en) * | 2020-07-15 | 2023-07-28 | 中国石油化工股份有限公司 | Vertical tray and gas-liquid contact mass transfer equipment with same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2475447Y (en) * | 2001-04-26 | 2002-02-06 | 河北工业大学 | Guide spray column plate |
| CN1597036A (en) * | 2004-08-26 | 2005-03-23 | 河北工业大学 | Compound jet tower disk |
-
2005
- 2005-08-18 CN CNB2005100147505A patent/CN100348287C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2475447Y (en) * | 2001-04-26 | 2002-02-06 | 河北工业大学 | Guide spray column plate |
| CN1597036A (en) * | 2004-08-26 | 2005-03-23 | 河北工业大学 | Compound jet tower disk |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1736528A (en) | 2006-02-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Jizhou Zhongke Energy Co., Ltd. Assignor: Hebei University of Technology Contract record no.: 2012130000048 Denomination of invention: Jet tray with large liquid holdup Granted publication date: 20071114 License type: Exclusive License Open date: 20060222 Record date: 20120417 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071114 Termination date: 20170818 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |