CN206793076U - A kind of dual-flow tray takes the decompression tower internals of thermal coupling with spray - Google Patents
A kind of dual-flow tray takes the decompression tower internals of thermal coupling with spray Download PDFInfo
- Publication number
- CN206793076U CN206793076U CN201720284422.5U CN201720284422U CN206793076U CN 206793076 U CN206793076 U CN 206793076U CN 201720284422 U CN201720284422 U CN 201720284422U CN 206793076 U CN206793076 U CN 206793076U
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- CN
- China
- Prior art keywords
- liquid distribution
- distribution trough
- atomizer
- tower
- spray
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
- 239000007921 spray Substances 0.000 title claims abstract description 21
- 230000006837 decompression Effects 0.000 title claims abstract description 12
- 230000008878 coupling Effects 0.000 title claims abstract description 10
- 238000010168 coupling process Methods 0.000 title claims abstract description 10
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 41
- 238000009826 distribution Methods 0.000 claims abstract description 30
- 238000005325 percolation Methods 0.000 claims abstract description 11
- 241000555268 Dendroides Species 0.000 claims abstract description 8
- 239000003595 mist Substances 0.000 claims abstract description 6
- 239000006228 supernatant Substances 0.000 claims abstract description 5
- 150000001875 compounds Chemical class 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 238000012546 transfer Methods 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 9
- 239000011800 void material Substances 0.000 description 9
- 239000003921 oil Substances 0.000 description 8
- 238000005292 vacuum distillation Methods 0.000 description 5
- 238000004523 catalytic cracking Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000945 filler Substances 0.000 description 4
- 238000010992 reflux Methods 0.000 description 4
- 238000004517 catalytic hydrocracking Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000003416 augmentation Effects 0.000 description 2
- 238000004581 coalescence Methods 0.000 description 2
- 238000004939 coking Methods 0.000 description 2
- 239000010779 crude oil Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 241000736911 Turritella communis Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011280 coal tar Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000005504 petroleum refining Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000003079 shale oil Substances 0.000 description 1
- 239000011275 tar sand Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Landscapes
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
A kind of dual-flow tray and spray take the decompression tower internals of thermal coupling be it is each take hot arc that 2 layers of dendroid injecting type liquid distribution trough are set, the atomizer of supernatant liquid distributor sprays downwards, and the atomizer of lower floor's liquid distribution trough sprays upwards；One layer of percolation sieve tray is installed between two layers of dendroid injecting type liquid distribution trough；Liquid distribution trough is sprayed onto the distance of tower wall to percolation sieve tray distance for liquid distribution trough outmost turns atomizer mist cone；Oil sump tank is installed, distance is more than 100mm below lower floor's liquid distribution trough.
Description
1. technical field
The utility model provides the decompression tower internals that a kind of dual-flow tray takes thermal coupling with spray, is related to petroleum refining neck
Domain.
2. background technology
Atmospheric and vacuum distillation unit is oil plant faucet device, and the base apparatus of deep processing, directly affects whole refining
The comprehensive benefit of factory.
With crude oil heaviness and in poor quality and following shale oil, tar sand oil, again (thick) oil, extra heavy oil, deep petroleum,
The unconventional heavy poor oil such as pitch, coal tar largely produces, and reduced crude is difficult to directly as Rfcc Feedstock.Improve
Extracting rate is depressurized, it is that oil refining enterprise's pool is excellent to strive for the more catalytic cracking of output or hydrocracking raw material, reduce yield of bottoms
Change downstream coking and catalytic cracking or hydrocracking unit production, the inevitable choice for maximally utilize resource, increasing the benefit.Decompression
The distillate of deep drawing is mainly used as catalytic cracking or hydrocracking raw material, and its benefit not only embodies in the present apparatus, heavier
The catalytic cracking for being embodied in downstream wanted, it is hydrocracked, in the comprehensive benefit of coking plant and whole refinery.Therefore deep vacuum distillation
The importance and benefit of technology more highlight, both at home and abroad all in the actively technique of research and development deep vacuum distillation and related equipment.
It is one of key measure of deep vacuum distillation to improve flash zone vacuum, reduces vacuum tower rectifying and takes hot arc pressure drop to pass
It is important.Void tower heat transfer technology is exactly the Typical Representative for the advanced technology for effectively reducing vacuum tower pressure drop in the world at present, is whole
Individual vacuum tower has the washing section of separation requirement and overhead reflux section to set high efficiency low pressure drop structured packing, and remaining respectively takes hot arc to use
Hollow-spraying-tower takes heat, effectively reduces overall presure drop.The full tower pressure of the vacuum tower using void tower heat transfer technology that SHELL technology companys provide
Power drop only has 6mmHg, and 16~18mmHg drops in the full pressure tower of vacuum tower of full filler.But it is garden because hollow-spraying-tower takes the nozzle of heat
Conical jet fluid column, in order to cover full tower section, the taper fluid column of every layer of nozzle intersects each other, causes liquid in tower section
Uneven distribution, and partial drop is directly sprayed onto tower wall, and heat transfer takes thermal effect to be deteriorated.Other void tower section pressure drop is extremely low, convection current
Gas distribution consistency degree through liquid header requires high.
Because foreign technology maintains secrecy, the domestic research by spray system and transmission of heat by contact, void tower heat transfer technology is for many years not
Make a breakthrough progress, and void tower section height needs more than 6m all the time, and some operating modes will reach 12m requirement, are difficult to realize in engineering.
The research for the influence carried secretly later by direct contact heat transfer efficiency and void tower kinetic energy factor to atomizer droplet, makes sky
Tower heat transfer height reduces significantly, and has reached the possibility of Project Realization, the pressure drop of two sections of heat transfer segment fillers is significantly
Reduce, be advantageous to deep vacuum distillation；But the consequence tower diameter brought has become big, capacity of returns adds, the hot quality of reflux temperature drop
It is low, it can increased in the operating cost of tower shell, pump, recuperation of heat etc. investment and pump accordingly, tower inner member
Although aspect reduces two sections of fillers, other inner members can accordingly increase because of the increase investment of diameter of the housing.
In addition with crude oil heaviness and in poor quality, acidity increase, the corrosion of ordinary decompression column internals is increasingly severe, filler by
It is excessively thin in plate, corrosion allowance deficiency, it would be highly desirable to develop low pressure drop high effect of reducing pressure column plate.
3. the content of the invention
The purpose of this utility model is in order to which the one kind for overcoming the shortcomings of existing void tower heat transfer technology and defect and inventing is worn
Stream column plate takes the decompression tower internals of thermal coupling with spray, and liquid holdup times and path lengthen, and eliminate wall flow phenomenon, and heat transfer is strong
Degree and efficiency high, effectively reduce pressure drop, void tower section height and diameter and capacity of returns, and the hot quality of reflux temperature is improved, thrown
Money is low with energy consumption, manufactures and easy for installation.
The technical solution of the utility model：
The utility model provides the decompression tower internals that a kind of dual-flow tray takes thermal coupling with spray, it is characterized in that each take
Hot arc sets 2 layers of dendroid injecting type liquid distribution trough, and the atomizer of supernatant liquid distributor sprays downwards, lower floor's liquid point
The atomizer of cloth device sprays upwards；One layer of percolation sieve tray, plate are installed between two layers of dendroid injecting type liquid distribution trough
Face percent opening 30-60%, bore dia 3-25mm；Liquid distribution trough to percolation sieve tray distance be liquid distribution trough outmost turns mist
Change 0.8-1.2 times that shower nozzle mist cone is sprayed onto tower wall distance；0 ° of liquid distribution trough outmost turns atomizer and vertical direction angle-
80 °, point to the axis of tower；Oil sump tank is installed, distance is more than 100mm below lower floor's liquid distribution trough.
Wherein percolation sieve tray can be that individual layer sieve plate or two layers or multiple sieve plate mistake hole are compound, plate spacing
For 3-10mm.
The characteristics of embodiment to describe the utility model in detail by the utility model.
4. brief description of the drawings
Accompanying drawing 1 is structural representation of the present utility model.
The drawing of accompanying drawing 1 is described as follows：
1st, tower wall 2, liquid distribution trough 3, percolation sieve tray 4, atomizer 5, oil sump tank
Process characteristic of the present utility model is described in detail with reference to the accompanying drawings and examples.
5. embodiment
Embodiment,
A kind of dual-flow tray takes the decompression tower internals of thermal coupling with spray to be formed by following structure assembly：It is each to take heat
Section sets 2 layers of dendroid injecting type liquid distribution trough (2), and the atomizer (4) of supernatant liquid distributor (2) sprays downwards, under
The atomizer (4) of layer liquid distribution trough (2) sprays upwards；The atomized drop of supernatant liquid distributor (2) is larger, air-flow mist
Entrainment rate is less than 10%；The atomized drop of lower floor's liquid distribution trough (2) is thinner, augmentation of heat transfer, is ejected into percolation sieve tray (3)
Coalescence recovery；One layer of percolation sieve tray (3), plate face percent opening are installed between two layers of dendroid injecting type liquid distribution trough (2)
30-60%, bore dia 3-25mm；It is liquid distribution trough (2) outmost turns that liquid distribution trough (2), which arrives percolation sieve tray (3) distance,
Atomizer (4) mist cone is sprayed onto 0.8-1.2 times of tower wall (1) distance；Liquid distribution trough (2) outmost turns atomizer (4) is with hanging down
Straight 0 ° -80 ° of angular separation, point to the axis of tower；Oil sump tank (5) is installed below lower floor's liquid distribution trough (2), distance is more than
100mm。
The sieve tray (3) that wherein flows can be that individual layer sieve plate or two layers or multiple sieve plate mistake hole are compound, between plate
Away from for 3-10mm.
Dual-flow tray provided by the utility model takes the decompression tower internals of thermal coupling with spray, by dual-flow tray to liquid
The spray droplet coalescence rectification of body distributor, extends liquid holdup times and path, avoids atomized drop wall flow phenomenon, conduct heat
Intensity and efficiency greatly improve；Lower floor's liquid distribution trough atomized drop sprays upwards, with declining drop head-on collision, augmentation of heat transfer effect
Fruit, reduces and takes hot void tower section height and capacity of returns, and the hot quality of reflux temperature improves；The pressure drop of high opening rate dual-flow tray less than
100Pa, Mass and heat transfer is enhanced to the liquid of spray up and down, without increasing tower diameter, reached wanting for low pressure drop high effect of reducing pressure column plate
Ask, improve tower internals corrosion resistance, investment is low with energy consumption, manufactures and easy for installation.
Claims (2)
1. a kind of dual-flow tray takes the decompression tower internals of thermal coupling with spray, it is characterized in that each take hot arc to set 2 layers of dendroid
Injecting type liquid distribution trough, the atomizer of supernatant liquid distributor spray downwards, the atomizer of lower floor's liquid distribution trough to
Upper injection；One layer of percolation sieve tray of installation between two layers of dendroid injecting type liquid distribution trough, plate face percent opening 30-60%,
Bore dia 3-25mm；Liquid distribution trough is sprayed onto tower to percolation sieve tray distance for liquid distribution trough outmost turns atomizer mist cone
The distance of wall；0 ° -80 ° of liquid distribution trough outmost turns atomizer and vertical direction angle, point to the axis of tower；Lower floor's liquid
Oil sump tank is installed, distance is more than 100mm below distributor.
2. a kind of dual-flow tray according to claim 1 takes the decompression tower internals of thermal coupling with spray, it is characterised in that wears
Stream sieve tray can be that individual layer sieve plate or two layers or multiple sieve plate mistake hole are compound, and plate spacing is 3-10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720284422.5U CN206793076U (en) | 2017-03-22 | 2017-03-22 | A kind of dual-flow tray takes the decompression tower internals of thermal coupling with spray |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720284422.5U CN206793076U (en) | 2017-03-22 | 2017-03-22 | A kind of dual-flow tray takes the decompression tower internals of thermal coupling with spray |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206793076U true CN206793076U (en) | 2017-12-26 |
Family
ID=60731184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720284422.5U Withdrawn - After Issue CN206793076U (en) | 2017-03-22 | 2017-03-22 | A kind of dual-flow tray takes the decompression tower internals of thermal coupling with spray |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206793076U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106730970A (en) * | 2017-03-22 | 2017-05-31 | 中国石油大学(华东) | A kind of dual-flow tray takes the decompression tower internals of thermal coupling with spray |
-
2017
- 2017-03-22 CN CN201720284422.5U patent/CN206793076U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106730970A (en) * | 2017-03-22 | 2017-05-31 | 中国石油大学(华东) | A kind of dual-flow tray takes the decompression tower internals of thermal coupling with spray |
| CN106730970B (en) * | 2017-03-22 | 2023-11-21 | 中国石油大学(华东) | Vacuum tower internal part of heat-taking coupling through-flow column plate and spraying |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20171226 Effective date of abandoning: 20231121 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20171226 Effective date of abandoning: 20231121 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |