CN105642200B - The design method of calandria type fixed bed reactor - Google Patents
The design method of calandria type fixed bed reactor Download PDFInfo
- Publication number
- CN105642200B CN105642200B CN201410631336.8A CN201410631336A CN105642200B CN 105642200 B CN105642200 B CN 105642200B CN 201410631336 A CN201410631336 A CN 201410631336A CN 105642200 B CN105642200 B CN 105642200B
- Authority
- CN
- China
- Prior art keywords
- annular channel
- import
- dividing plate
- fused salt
- discharge orifice
- 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.)
- Active
Links
Landscapes
- Physical Or Chemical Processes And Apparatus (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
The invention provides a kind of design method of calandria type fixed bed reactor,The calandria type fixed bed reactor,Including reaction tube,Closed container,Fused salt import,Fused salt exports,Import annular channel,Export annular channel,Equal discharge orifice and dividing plate,Separator edge is connected with container inner wall,Bottom inlet annular channel is located above the card of bottom,Remaining is located above dividing plate,Top exit annular channel is located at below the card of top,Remaining is located at below dividing plate,Import annular channel and outlet annular channel are looped around outside wall,Fused salt import connects with import annular channel,Fused salt is exported with exporting annular flow passage,Equal discharge orifice is arranged on the wall relative with import annular channel and outlet annular channel,Reaction tube is set in a reservoir through dividing plate and by card,The area of section of import annular channel is more than 2 times of equal orifice area sum.The present invention has versatility, and the flow velocity after small holes is identical, and heat transfer effect is the same, is advantageous to the uniformity of temperature.
Description
Technical field
The present invention relates to the design method that a kind of shell and tube fixes reaction bed, the technology for belonging to chemical reactor manufacture is led
Domain.
Background technology
Calandria type fixed bed reactor, catalyst is housed in tube side, gas flows through tube side and carried out in certain temperature range
Chemical reaction；Fused salt flows through shell side and takes away heat caused by chemical reaction.Temperature homogeneity between tubulation is extremely important, such as
Fruit excessive temperature differentials, it is possible to booster occur and cause damp production or even security incident occur.It is uniform to improve the temperature of tubulation
Property, it is necessary to incoming is uniform to be accomplished to the entrance for the fused salt that radiates.
A kind of device for realizing equivalent shunting of Patent No. CN2443770Y patent disclosure.The device is to pass through difference
The height of bar hole realize different bar shaped hole areas, due to the flow velocity inhomogeneities of incoming, the big local area of flow velocity will
Small, the small local area of flow velocity is big, it is achieved thereby that the flow in each hole is impartial.
Said apparatus has a disadvantage that：
1. because the size of each bar hole is different, the difficulty of processing is added；
2. the patent provides the size of bar hole, based on specific fluid, flow in the case of obtain, if fluid
Species or design discharge changed, be required for obtaining new parameter by largely testing, versatility is not strong；
3. the difficulty of processing of bar hole is bigger than circular port；
4. the height of bar hole is different, the height difference of tubulation is rushed at along reactor circumference upper fluid, can be brought on tubulation
Temperature unevenness；
5. the device ensure that the uniformity of flow, but be not carried out the uniformity of flow velocity.Identical flow is with difference
Flow velocity wash away tubulation, corresponding exchange capability of heat is different, is unfavorable for the temperature homogeneity of tubulation.
The content of the invention
It is an object of the invention to provide a kind of design method of calandria type fixed bed reactor, to overcome prior art to exist
The defects of.
The design method of the calandria type fixed bed reactor, the calandria type fixed bed reactor, includes reaction tube
(1), closed container (2), fused salt import (7), fused salt outlet (8), import annular channel (41), outlet annular channel (42),
Equal discharge orifice (5) and dividing plate (9)；
The edge of the dividing plate (9) is connected with the inner wall sealing of closed container (2)；
The described import annular channel (41) of bottom is arranged on the top of bottom card, the import annular described in remaining
Runner (41) is arranged on the top of described dividing plate (9), and the described outlet annular channel (42) at top is arranged on top card
Lower section, outlet annular channel (42) described in remaining sets the lower section of described dividing plate (9), import annular channel (41) and
Outlet annular channel (42) is looped around outside the wall of described closed container (2)；
Fused salt import (7) is connected with import annular channel (41), and fused salt exports (8) and is connected with outlet annular channel (42)
It is logical；
The discharge orifice (5) is arranged on the closed appearance relative with import annular channel (41) and outlet annular channel (42)
On the wall of device (2)；
Described reaction tube (1) passes through dividing plate (9), and is vertically set on by card (101) in closed container (2)；
Characterized in that, the area of section Al of import annular channel (41) is more than 2 times of equal orifice area Aj sums；
Term " the area of section Al " of import annular channel (41), refers to the cross-sectional area of fluid flow direction；
The calandria type fixed bed heat exchanger designed by this method, has the following advantages：
Each aperture on wall is that identical size is uniform, is easily worked；This method has versatility, for different chis
The reactor of very little scale/reaction capacity can use this method；The aperture of wall is recommended to use circular port, convenient processing；Circle
Hole is equally distributed on wall, is identical along the circumferential influence to reaction tube of reactor；Due to the area and stream of aperture
Measure identical, therefore the flow velocity after small holes is identical, the same to the eroding velocity of reaction tube, caused by heat transfer effect it is the same, have
Beneficial to the uniformity of temperature.
Brief description of the drawings
Fig. 1 is the general structure schematic diagram according to a kind of calandria type fixed bed reactor designed by the inventive method；
Fig. 2 is the annular channel and buffer pool according to a kind of calandria type fixed bed reactor designed by the inventive method
Partial schematic diagram；
Fig. 3 is the perforate according to the equal model of discharge orifice 1/4 of a kind of calandria type fixed bed reactor designed by the inventive method
Number order figure；
Fig. 4 is the quality stream according to the equal discharge orifice in calandria type fixed bed reactor part of the embodiment 1 designed by the invention
Measure distribution map.
Embodiment
Such as Fig. 1 and Fig. 2, the design method of the calandria type fixed bed reactor, the calandria type fixed bed reactor, bag
Include reaction tube (1), closed container (2), fused salt import (7), fused salt outlet (8), import annular channel (41), outlet annular
Runner (42), equal discharge orifice (5) and dividing plate (9)；
The edge of the dividing plate (9) is connected with the inner wall sealing of closed container (2)；Preferably, described dividing plate (9)
Quantity is 2~5 pieces；
Described import annular channel (41) is arranged on the top of described dividing plate (9), described outlet annular channel
(42) lower section of described dividing plate (9) is set, import annular channel (41) and outlet annular channel (42) be looped around described in it is close
Outside the wall of the container (2) closed；
Fused salt import (7) is connected with import annular channel (41), and fused salt exports (8) and is connected with outlet annular channel (42)
It is logical；
The discharge orifice (5) is arranged on the closed appearance relative with import annular channel (41) and outlet annular channel (42)
On the wall of device (2)；
Described reaction tube (1) passes through dividing plate (9), and is vertically set on by card (101) in closed container (2)；
Characterized in that, the area of section Al of import annular channel (41) is more than 2 times of equal orifice area Aj sums；
Preferably, the area of section Al of import annular channel (41) is 2~20 times of equal orifice area Aj sums；
Preferably, the discharge orifice (5) is uniformly distributed along wall；
Preferably, the discharge orifice (5) is circular, a diameter of 5~9mm, and the area of equal discharge orifice is identical；
Preferably, in addition to hydraulic barrier (3), the hydraulic barrier (3) is arranged in closed container (2), with reaction
It is arranged in a crossed manner to manage (1)；
Preferably, described equal discharge orifice, its gross area Aj and the relation of fused salt volume flow Q meet：Aj>Q/K1, wherein
K1 is 2.8m/s, preferably：Q/K1<Aj<Q/M1, wherein M1 are 0.6m/s；Further, set in the porch of the annular channel
There is the buffer pool (6) of a reduction flow velocity, the discharge area Ah of buffer pool (6) meets with the relation of fused salt volume flow Q：Ah>Q/
K2, wherein K2 are 2m/s, preferably：Q/K2<Ah<Q/M2, wherein M2 are 0.9m/s；
Even the present invention can guarantee that the reactor of differential responses capacity, in the empirical data formula provided according to the present invention
Afterwards, the inlet flow rate uniformity requirement of reactor is met.
By substantial amounts of numerical simulation and experiment test, as long as the cross-sectional area of runner is controlled in aperture area sum
More than 2 times, you can realize the friction loss that local resistance loss caused by aperture is much larger than in runner；And due to annular
The dynamic pressure of flow passage entry flow velocity is bigger, can cause the imbalance of static pressure, therefore inventor is ground by experiment and numerical simulation
After having studied carefully submerged jets, it is determined that if the flow control of entrance in below 2m/s, you can ignore inlet flow rate bring it is quiet
Press imbalance problem.This achievement in research is applied in product design, and specific embody is following relation, i.e. Ah>Q/K2.This
Variable in invention in all formula is SI units.
Embodiment 1
As shown in Figure 1 and Figure 2, the structural representation designed by a kind of design method of calandria type fixed bed reactor, it is wrapped
Containing reaction tube (1), reactor wall (2), hydraulic barrier (3), fused salt entrance is externally provided with a circle annular flow along around reactor
Road (4), the reaction wall relative with annular channel are provided with equal discharge orifice (5), and the entrance of annular channel is provided with buffer pool (6).According to
The design method requirement of the present invention, the area of section of annular channel is 0.42m2, all orifice area sums are 0.2m2, the former
It is 2.1 times of the latter, has been more than 2 times formulated in this method；The direction of flow of buffer pool is downward, and what buffer pool exported
Area is 0.252 square metre, and fused salt volume flow is 0.413m in the structure3/ s, i.e. Ah>Q/K2, meet the requirement of the present invention.
Being emulated by CFD, for the foraminate flow rates of structure institute between 0.096-0.117m/s, its nonuniformity coefficient is 4.4%,
In the sector large-scale plant, its uniformity is ideal.Fig. 4 is the mass flow point of the equal model of discharge orifice 1/4 of the structure
Butut.In figure, perforate numbering refers to being numbered from the 1 equal discharge orifice of row corresponding to one end import buffer pool, in figure mark for
100, counterclockwise to the closed container relative with annular channel wall 1/4 at the 1 equal discharge orifice of row terminate, in figure mark for
200。
Claims (5)
1. the design method of calandria type fixed bed reactor, the calandria type fixed bed reactor, include reaction tube (1), close
Container (2), fused salt import (7), fused salt outlet (8), import annular channel (41), outlet annular channel (42), the equal discharge orifice closed
And dividing plate (9) (5)；
The edge of the dividing plate (9) is connected with the inner wall sealing of closed container (2)；
Described import annular channel (41) is arranged on the top of described dividing plate (9), and described outlet annular channel (42) is set
The lower section of described dividing plate (9) is put, import annular channel (41) and outlet annular channel (42) are looped around described closed appearance
Outside the wall of device (2)；
Fused salt import (7) is connected with import annular channel (41), and fused salt exports (8) and is connected with outlet annular channel (42)；
The discharge orifice (5) is arranged on the closed container relative with import annular channel (41) and outlet annular channel (42)
(2) on wall；
Described reaction tube (1) passes through dividing plate (9), and is vertically set on by card (101) in closed container (2)；
Characterized in that, the area of section Al of the import annular channel (41) is 2~20 times of equal orifice area Aj sums；
Described equal discharge orifice, its gross area Aj and the relation of fused salt volume flow Q meet：
Q/K1<Aj<Q/M1, wherein K1 are 2.8m/s, and wherein M1 is 0.6m/s；
Buffer pool (6), discharge area Ah and the fused salt volume flow Q of buffer pool (6) are provided with the porch of the annular channel
Meet in the presence of following relation：
Q/K2<Ah<Q/M2, wherein M2 are 0.9m/s, K2 2m/s.
2. according to the method for claim 1, it is characterised in that the quantity of described dividing plate (9) is 2~5 pieces.
3. according to the method for claim 1, it is characterised in that the discharge orifice (5) is uniformly distributed along wall.
4. according to the method for claim 1, it is characterised in that the discharge orifice (5) is circular, a diameter of 5~9mm, flows
The area in hole is identical.
5. according to the method for claim 1, it is characterised in that also set including hydraulic barrier (3), the hydraulic barrier (3)
Put in closed container (2), it is arranged in a crossed manner with reaction tube (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410631336.8A CN105642200B (en) | 2014-11-11 | 2014-11-11 | The design method of calandria type fixed bed reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410631336.8A CN105642200B (en) | 2014-11-11 | 2014-11-11 | The design method of calandria type fixed bed reactor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105642200A CN105642200A (en) | 2016-06-08 |
| CN105642200B true CN105642200B (en) | 2018-02-27 |
Family
ID=56483785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410631336.8A Active CN105642200B (en) | 2014-11-11 | 2014-11-11 | The design method of calandria type fixed bed reactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105642200B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201510870U (en) * | 2009-09-17 | 2010-06-23 | 西安航天华威化工生物工程有限公司 | Single pump circulation multitubular fixed bed reactor |
| CN101941879A (en) * | 2009-07-06 | 2011-01-12 | 中国石油化工股份有限公司上海石油化工研究院 | Method for preparing ethylene by dehydrating ethanol |
| CN103553864A (en) * | 2013-01-30 | 2014-02-05 | 中国石油化工股份有限公司 | Method for preparing butadiene through multi-stage oxidative dehydrogenation of butene |
| CN203494495U (en) * | 2013-09-24 | 2014-03-26 | 中国石油化工股份有限公司 | Reactor for producing vinyl acetate through ethylene gaseous phase method |
| DE102012220926A1 (en) * | 2012-11-15 | 2014-05-15 | Chemieanlagenbau Chemnitz Gmbh | Fixed Bed Reactor |
| CN203610107U (en) * | 2013-09-24 | 2014-05-28 | 中国石油化工股份有限公司 | Tubular fixed-bed reactor for producing vinyl acetate |
-
2014
- 2014-11-11 CN CN201410631336.8A patent/CN105642200B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101941879A (en) * | 2009-07-06 | 2011-01-12 | 中国石油化工股份有限公司上海石油化工研究院 | Method for preparing ethylene by dehydrating ethanol |
| CN201510870U (en) * | 2009-09-17 | 2010-06-23 | 西安航天华威化工生物工程有限公司 | Single pump circulation multitubular fixed bed reactor |
| DE102012220926A1 (en) * | 2012-11-15 | 2014-05-15 | Chemieanlagenbau Chemnitz Gmbh | Fixed Bed Reactor |
| CN103553864A (en) * | 2013-01-30 | 2014-02-05 | 中国石油化工股份有限公司 | Method for preparing butadiene through multi-stage oxidative dehydrogenation of butene |
| CN203494495U (en) * | 2013-09-24 | 2014-03-26 | 中国石油化工股份有限公司 | Reactor for producing vinyl acetate through ethylene gaseous phase method |
| CN203610107U (en) * | 2013-09-24 | 2014-05-28 | 中国石油化工股份有限公司 | Tubular fixed-bed reactor for producing vinyl acetate |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105642200A (en) | 2016-06-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104265266B (en) | Horizontal well water controlling completion method evaluation experiment device | |
| CN103594128B (en) | Reactor the 4th grade of Automatic Depressurization System spurts release analogue experiment installation and method | |
| CN206592111U (en) | A kind of new fractured-cavernous carbonate reservoir displacement simulation experimental provision | |
| CN205280698U (en) | Laboratory is with defoaming agent performance simulation evaluation device | |
| CN104101390B (en) | Flow measuring device for measuring sewage in non-full pipe | |
| CN105642200B (en) | The design method of calandria type fixed bed reactor | |
| CN106768098B (en) | Droplet distribution measuring method and device in a kind of rectangular channel inner annular gas core | |
| CN208636195U (en) | A kind of maleic anhydride catalyst coating shedding rate measurement device | |
| CN105565273B (en) | Hydrogen chloride is the method that raw material prepares chlorine | |
| CN203990326U (en) | A kind of device that continues to provide saturated brine | |
| CN203474700U (en) | Extraction reactor | |
| CN102608272B (en) | Method for determining element dissolved-out quantity of mineral product | |
| CN202446840U (en) | Bunched rectifying device | |
| CN207614809U (en) | A kind of chill tower experimental provision | |
| CN207199160U (en) | Streamline demonstrating experiment device | |
| CN205673579U (en) | A kind of aluminium liquid storage tank | |
| CN109032104A (en) | One kind automatically flowing into control device Performance Test System and method | |
| CN102620962A (en) | Multi-passage mineral lixiviating device | |
| CN108181206A (en) | Slurries diffusion test set and test method in a kind of dynamic water | |
| CN105318924B (en) | Gas-liquid/stream-liquid two-phase flow Flow Measuring System and measurement method | |
| CN202710338U (en) | Simulative testing device for rain-zone resistance of reverse-flow natural ventilation wet-type cooling tower | |
| CN107702749A (en) | A kind of liquid waste evaporator multiparameter measuring device and measuring method | |
| CN104359505B (en) | Petrochemical process parameter measurement experimental equipment based on safety interlock system | |
| CN102706398A (en) | Rotameter | |
| CN205374408U (en) | Pore -level simulation experimental apparatus for migration of pore -throat scale elastic microspheres in porous medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |