CN205761058U - Eddy flow broken streaming cold hydrogen box - Google Patents
Eddy flow broken streaming cold hydrogen box Download PDFInfo
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- CN205761058U CN205761058U CN201620520369.XU CN201620520369U CN205761058U CN 205761058 U CN205761058 U CN 205761058U CN 201620520369 U CN201620520369 U CN 201620520369U CN 205761058 U CN205761058 U CN 205761058U
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- gas
- cold hydrogen
- overflow cylinder
- broken
- blending bin
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Abstract
The utility model discloses a kind of eddy flow broken streaming cold hydrogen box, it includes coaxially connected intercepter plate and blending bin, annulus is formed between blending bin and reactor shell, the outer wall bottom even of described blending bin is provided with several feed entrance, in the gas-liquid mixture outlet at blending bin center, overflow cylinder is installed, the centre-height of overflow cylinder is higher than the height of the top edge of feed entrance, gas-liquid mixture outlet be provided with multiple broken discharge orifice, overflow cylinder be provided around several piece head and the tail dislocation connect, in circle shape arrangement deflector.This utility model simple in construction, it is provided with spiral deflector, overflow cylinder and broken discharge orifice, define flat mixed structure, in the case of reducing cold hydrogen box height, enhance the contact heat transfer effect of gas-liquid two-phase, existing cold hydrogen box residence time of material can be effectively improved short, undercompounding, uneven, the problem such as structure is complicated, pressure drop is big of lowering the temperature.
Description
Technical field
This utility model relates to petrochemical industry hydrogenation reactor equipment technical field, specifically
A kind of eddy flow broken streaming cold hydrogen box, particularly relates to one for cold hydrogen and high temperature hydrocarbon reactant
With the cold hydrogen box that hot hydrogen is sufficiently mixed heat transfer.
Background technology
The hydrogenation reaction of PETROLEUM PROCESSING includes being hydrocracked, hydrofinishing, hydro-upgrading, hydrogenation
The reactions such as process, are exothermic reaction.Along with the carrying out of hydrogenation reaction, the temperature of reaction mass
Constantly rising, and temperature of charge is the highest, reaction rate is the fastest, vicious cycle, easily causes
Whole beds temperature runaway, causes catalyst coking, the performance of infringement catalyst.Therefore,
Hydrogenation reactor generally arranges multiple beds, and injects between two beds
Cold hydrogen, to control the temperature of reaction mass, it is ensured that catalyst performance stabilised and equipment safety.
Cold hydrogen box is one of crucial inner member of hydrogenation reactor, is cold hydrogen and hot logistics mixes
The place of heat transfer.
The complicated structure of cold hydrogen box, a kind of cold hydrogen box is with multiple technologies feature, but its knot
Structure design needs to meet throttling, collision, eddy flow and the requirement of atomization.The development experience of cold hydrogen box
The structures such as honeycomb tubular type, manifold-type, flow around type, Spiralism type, deflector type, sucking type, its
Performance is mainly evaluated in terms of two: contact heat transfer performance and pressure drop.Gas-liquid two-phase contact is more filled
Point, the radial temperature difference of reactor is the least, the temperature the most suitable underlying catalyst bed of reaction mass
Demand, illustrate that the contact heat transfer performance of cold hydrogen box is the best, performance is fully played.Cold
The pressure drop of hydrogen case is the lowest, and the load of circulating hydrogen compressor is the least, and energy loss is the fewest.This
Outward, the structure of cold hydrogen box also should be simple, compact, takes up room little, with the hydrogenation that reduction is expensive
Capital cost of reactor.
Patent CN200620134123.5 discloses a kind of Flat cold hydrogen case, by cold hydrogen tube,
Intercepter plate, two semicircle mixing roads, two mixing chambers, two impingement baffles, two perforate gears
Plate and sieve tray composition.The entrance of mixing chamber is symmetrically arranged throttle orifice on intercepter plate, with mixed
Conjunction road is connected, and arranges impingement baffle in mixing chamber, and mixing chamber outlet lateral symmetry arranges perforated baffle.
Mixing road is suspended on below intercepter plate, saves cold hydrogen box height, and semicircle mixing road extends
It is uniform that mixing runner, beneficially gas-liquid two-phase are sufficiently mixed heat exchange.This structure has flat structure
With the advantage of mixed heat transfer function admirable, but fluid is in the maldistribution of blending bin lower floor.
CN201220091695.5 discloses a kind of cold hydrogen box, including intercepter plate, premix case,
Core case and buffer board.Intercepter plate is provided with two throttle orifices, and throttle orifice is arranged over premix
Case, premix box top is provided with liquid barrier, and side is provided with feed entrance, feed entrance dead ahead
It is provided with deflector；On intercepter plate, casing centered by the lower section of throttle orifice, is provided with inside core case
Inner ring plate, outer ring plate and middle ring flat-plate, bottom inner ring plate centered by tank outlet, below outlet
It is provided with buffer board.This cold hydrogen box simple in construction, takes up room little, easy for installation, material stop
Time is long, but due to density contrast, and gas-liquid two-phase is also easily generated lamination, heat-transfer effect when flowing
Limited.
CN201210168308.8 discloses a kind of cold hydrogen propelled spiral-flow type cold hydrogen box, mixing
Cylinder is arranged on lower supporting plate center, and cyclone pipe the most tangentially connects with mixing drum.Rectangle
Gas-liquid down-comer is vertically set on outside mixing drum, and top is with the fluid intake on upper backup pad even
Connecing, bottom the most tangentially connects with cyclone pipe outer wall.Cold hydrogen arm upper end be positioned at
Cold hydrogen tube outside gripper shoe connects, and lower end is the most tangentially connected with cyclone pipe outer wall.Mixed
He Tong center sets out mouth, and outlet both sides set arc swirl vane, set gripper shoe below outlet.
This cold hydrogen box utilizes cold hydrogen to promote gas-liquid eddy flow, extends the time of staying by fluid three-dimensional rotation,
Improve heat transfer efficiency, but structure is complicated, take up room bigger.
Above-mentioned cold hydrogen box is by eddy flow, extends cold and hot Flow of Goods and Materials distance and extend contact time,
Or increase contact area by disturbance logistics, to improve the heat-transfer effect of cold and hot material.But still
The mixing that there is cold hydrogen and product is abundant not, the phenomenon that logistics cooling is uneven, and
Structure is complicated, and pressure drop is big, need to improve further.
Utility model content
The purpose of this utility model is to provide a kind of eddy flow broken streaming cold hydrogen box, is reducing to meet
Under the requirement of cold hydrogen box height, the contact heat transfer effect of strengthening gas-liquid two-phase, it is possible to be effectively improved
Existing cold hydrogen box residence time of material is short, undercompounding, cooling is uneven, structure is complicated,
The problem that pressure drop is big.
For reaching above-mentioned purpose, technical solution adopted in the utility model is:
A kind of eddy flow broken streaming cold hydrogen box, is installed in hydrogenation reactor, is positioned under cold hydrogen tube
Side, it includes coaxially connected intercepter plate and blending bin, blending bin and hydrogenation reactor cylinder it
Between formed annulus, the sidewall bottom of blending bin is connected with intercepter plate, in described intercepter plate
The gas-liquid mixture outlet of the heart is provided with multiple broken discharge orifice, and gas-liquid mixture outlet is provided with two ends
The overflow cylinder of opening, the height of the gas-liquid import on overflow cylinder top is equal higher than blending bin sidewall bottom
The height of several feed entrance top edges of even setting, overflow cylinder to be provided around several piece head and the tail wrong
Position connects, the deflector of arrangement in circle shape, and overflow cylinder, deflector are installed in blending bin
In inner chamber.
Preferably, the truncated cone-shaped that is shaped as both ends open of described overflow cylinder or excision top
Hemispherical or the semielliptical shape at excision top, the top of overflow cylinder is provided with gas-liquid import, gas-liquid
The area of import is less than the area of the gas liquid outlet of bottom.
Preferably, the gas-liquid inlet-duct area on described overflow cylinder top is less than the face of all feed entrances
Long-pending sum.
Preferably, described deflector is placed with a few around overflow cylinder, often encloses the quantity of deflector
For 2-8.
Preferably, the one being shaped as in arc or waveform of described deflector or two kinds
Combination.
Preferably, in the generally circular in shape or polygon of described broken discharge orifice or radiation
Kind or the combination of more than two kinds, its circulation area by overflow cylinder lower limb to intercepter plate center by
The least.
Preferably, the generally circular in shape or polygon of described feed entrance or fan-shaped or spiral shell
The combination of the above shape of one or two kinds of in spin line shape.
This utility model in use, gas-liquid mixture and the cold hydrogen being newly added blending bin with
After the annulus of reactor is assembled, enter the inner chamber of blending bin from feed entrance, at water conservancy diversion
Producing eddy flow in the fluid passage that plate is surrounded, gas-liquid mixture is sufficiently touched with cold hydrogen
Hitting, mix, it is achieved heat exchange, the temperature of high temperature logistics reduces；Gas due to overflow cylinder top
The height of liquid import is higher than the height of feed entrance, and gas-liquid mixture deposits on intercepter plate, shape
Become stable liquid level, make gas phase must pass liquid layer with the form of bubbling, it is to avoid gas and liquid flowing
Lamination, improves the contact area of gas-liquid two-phase, further enhances heat-transfer effect；Gas-liquid
Mixture enters overflow cylinder from the gas-liquid import of overflow cylinder, after the throttling of overflow cylinder, and gas
Liquid mixture produces collision with the center of intercepter plate, mixes further；Intercepter plate center broken
After discharge orifice makes gas phase that liquid phase is produced the effect of suction, broken stream, atomization, spray to whole reaction
Device cross section.
The beneficial effects of the utility model are:
(1) this utility model simple in construction, only includes intercepter plate and blending bin, defines flat
Flat mixed structure, arranges several piece head and the tail dislocation in blending bin inner chamber and connects, arranges in circle shape
The deflector of cloth, constitutes the circulation passage of gas-liquid mixture, takes full advantage of the sky of blending bin
Between, make mixture all flow according to circumferencial direction inside and outside blending bin, kinetic energy rejection is less, makes
The pressure drop of cold hydrogen box is less, extends the time of contact of mixture, makes gas phase the most mixed with liquid phase
Close, it is achieved that uniform heat exchange, reduce the height of blending bin, reduce the volume of equipment；
(2) this utility model enters in the centrally disposed overflow cylinder of blending bin, the gas-liquid of overflow cylinder
The height of mouth is higher than the height of feed entrance top edge, and gas-liquid mixture deposits on intercepter plate,
Form stable liquid level, improve the contact area of gas-liquid two-phase and the level of disruption of liquid phase, make
Gas phase must solve gas-liquid and be layered, with the form of bubbling through liquid layer, the heat transfer efficiency brought
Relatively low problem, optimizes the uniform of the heat transfer of gas-liquid two-phase, mass transfer effect and liquidus temperature distribution
Property；
(3) the gas-liquid inlet-duct area on overflow cylinder top is less than the area of feed entrance, makes gas phase
Liquid phase stream generation is aspirated atomizing at overflow cylinder gas-liquid import section by logistics；Overflow cylinder
The area of gas-liquid import less than the area of gas liquid outlet of bottom, reduce at gas liquid outlet because of
Intercepter plate stops the pressure loss brought；
(4) gas-liquid mixed material broken stream of broken discharge orifice on intercepter plate before flowing out blending bin
Atomization, makes solution dispersion become drop, is distributed to whole reactor under the jet-action of broken discharge orifice
Cross section, not only increases the contact area of gas-liquid two-phase, and has certain pre-point to material
Join effect, may advantageously facilitate being sufficiently mixed and heat exchange of gas-liquid two-phase, make lower catalyst agent bed
Obtain more uniform temperature and material distribution；
(5) this utility model has simple in construction, reasonable in design, take up room little, installation
Convenient, reaction logistics length time of contact, contact area are big, mixing fully, heat transfer efficiency high,
The feature of uniformity of temperature profile, it is adaptable to the heat exchange between gas-liquid two-phase, is particularly suited for strongly exothermic
In hydrogenation reactor, reaction heat fluid is cooled and fluid mixing by cold hydrogen.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structural representation of overflow cylinder in Fig. 1；
Fig. 3 is the structural representation of deflector in Fig. 1；
Fig. 4 is the structural representation after Fig. 1 removes overflow cylinder, blending bin sidewall；
In figure: 1, intercepter plate, 2, blending bin, 3, feed entrance, 4, overflow cylinder, 5,
Deflector, 6, broken discharge orifice.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is described in further detail.
A kind of eddy flow broken streaming cold hydrogen box as shown in Figures 1 to 4, is installed on hydrogenation reactor
In, it being positioned at the lower section of cold hydrogen tube, it wraps coaxially connected intercepter plate 1 and blending bin 2, mixing
Annulus, the outer wall bottom even of blending bin 2 is formed between case 2 and hydrogenation reactor cylinder
It is provided with several rectangular feed entrance 3, the upper peace of gas-liquid mixture outlet at blending bin 2 center
Equipped with round table-like overflow cylinder 4, the centre-height of overflow cylinder 4 is higher than the top of feed entrance 3
The height of edge, the top of overflow cylinder 4 is provided with gas-liquid import, and the area of gas-liquid import is less than bottom
The area of gas liquid outlet, the gas-liquid inlet-duct area on overflow cylinder 4 top is less than all feed entrances
The area sum of 3.Gas-liquid mixture outlet is provided with multiple broken discharge orifice 6 being distributed in radiation,
Its circulation area is gradually reduced to intercepter plate center by overflow cylinder lower limb.Overflow cylinder 4 is around
It is provided with the arc deflector 5 that several piece head and the tail dislocation connects, arranges in circle shape.Deflector 5 encloses
Being placed with 2 circles around overflow cylinder 4, often the quantity of circle deflector 5 is 4.
In use, gas-liquid mixture and the cold hydrogen being newly added are in blending bin 2 for this utility model
After the annulus of reactor is assembled, enter the inner chamber of blending bin 2 from feed entrance 3,
Producing eddy flow in the fluid passage that deflector 5 is surrounded, gas-liquid mixture obtains with cold hydrogen
Sufficiently collision, mixing, it is achieved heat exchange, the temperature of high temperature logistics reduces；Due to overflow cylinder
The height of the gas-liquid import on 4 tops is higher than the height of feed entrance 3, and gas-liquid mixture is damming
Deposit on plate 1, form stable liquid level, make gas phase must pass liquid layer with the form of bubbling,
Avoid the lamination of gas and liquid flowing, improve the contact area of gas-liquid two-phase, further enhance
Heat-transfer effect；Gas-liquid mixture enters overflow cylinder 4 from the gas-liquid import of overflow cylinder 4, passes through
After the throttling of overflow cylinder 4, gas-liquid mixture produces collision, further with the center of intercepter plate 1
Ground mixing；The broken discharge orifice 6 at intercepter plate center 1 makes gas phase that liquid phase is produced suction, broken stream, mist
After the effect changed, spray to whole reactor cross section.
This utility model simple in construction, only includes intercepter plate and blending bin, defines flat hybrid junctions
Structure, arranges the deflector that several piece head and the tail dislocation connects, arranges in circle shape in blending bin inner chamber,
Constitute the circulation passage of gas-liquid mixture, take full advantage of the space of blending bin, make mixture
All flowing according to circumferencial direction inside and outside blending bin, kinetic energy rejection is less, makes the pressure drop of cold hydrogen box
Less, extend the time of contact of mixture, make gas phase be sufficiently mixed with liquid phase, it is achieved that all
Even heat exchange, reduces the height of blending bin, reduces the volume of equipment.
Claims (7)
- null1. an eddy flow broken streaming cold hydrogen box，It is installed in hydrogenation reactor，It is positioned at the lower section of cold hydrogen tube，It includes coaxially connected intercepter plate (1) and blending bin (2)，Annulus is formed between blending bin (2) and hydrogenation reactor cylinder，The sidewall bottom of blending bin (2) is connected with intercepter plate (1)，It is characterized in that: the gas-liquid mixture outlet at described intercepter plate (1) center is provided with multiple broken discharge orifice (6)，The overflow cylinder (4) of both ends open is installed in gas-liquid mixture outlet，The height of several feed entrances (3) top edge that the height of the gas-liquid import on overflow cylinder (4) top is uniformly arranged higher than blending bin (2) sidewall bottom，The several piece head and the tail dislocation that is provided around of overflow cylinder (4) connects、The deflector (5) of arrangement in circle shape，Overflow cylinder (4)、Deflector (5) is installed in the inner chamber of blending bin (2).
- Eddy flow the most according to claim 1 broken streaming cold hydrogen box, it is characterized in that: the truncated cone-shaped being shaped as both ends open of described overflow cylinder (4) or the hemispherical at excision top or the semielliptical shape at excision top, the top of overflow cylinder (4) is provided with gas-liquid import, and the area of gas-liquid import is less than the area of the gas liquid outlet of bottom.
- Eddy flow the most according to claim 2 broken streaming cold hydrogen box, it is characterised in that: the gas-liquid inlet-duct area on described overflow cylinder (4) top is less than the area sum of all feed entrances (3).
- 4. according to the eddy flow broken streaming cold hydrogen box described in claim 1 or 2 or 3, it is characterised in that: described deflector (5) is placed with a few around overflow cylinder (4), and the quantity often enclosing deflector (5) is 2-8.
- Eddy flow the most according to claim 4 broken streaming cold hydrogen box, it is characterised in that: a kind of or combination of two kinds being shaped as in arc or waveform of described deflector (5).
- Eddy flow the most according to claim 5 broken streaming cold hydrogen box, it is characterized in that: a kind of or combination of more than two kinds in the generally circular in shape or polygon of described broken discharge orifice (6) or radiation, its circulation area is gradually reduced to intercepter plate (1) center by overflow cylinder (4) lower limb.
- Eddy flow the most according to claim 6 broken streaming cold hydrogen box, it is characterised in that: the generally circular in shape or polygon of described feed entrance (3) or fan-shaped or spiral yarn shaped in the combination of the above shape of one or two kinds of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620520369.XU CN205761058U (en) | 2016-05-31 | 2016-05-31 | Eddy flow broken streaming cold hydrogen box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620520369.XU CN205761058U (en) | 2016-05-31 | 2016-05-31 | Eddy flow broken streaming cold hydrogen box |
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| Publication Number | Publication Date |
|---|---|
| CN205761058U true CN205761058U (en) | 2016-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620520369.XU Expired - Fee Related CN205761058U (en) | 2016-05-31 | 2016-05-31 | Eddy flow broken streaming cold hydrogen box |
Country Status (1)
| Country | Link |
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| CN (1) | CN205761058U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105921078A (en) * | 2016-05-31 | 2016-09-07 | 兰州兰石集团有限公司 | Vortex broken flow type hydrogen cold box |
| CN111558338A (en) * | 2020-05-25 | 2020-08-21 | 中国石油化工股份有限公司 | Gas-liquid mixing system |
-
2016
- 2016-05-31 CN CN201620520369.XU patent/CN205761058U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105921078A (en) * | 2016-05-31 | 2016-09-07 | 兰州兰石集团有限公司 | Vortex broken flow type hydrogen cold box |
| CN105921078B (en) * | 2016-05-31 | 2018-04-27 | 兰州兰石集团有限公司 | The broken streaming cold hydrogen box of eddy flow |
| CN111558338A (en) * | 2020-05-25 | 2020-08-21 | 中国石油化工股份有限公司 | Gas-liquid mixing system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161207 Termination date: 20190531 |