CN208742509U - A kind of water-cooled snakelike heat exchange tube axial flow reactor - Google Patents
A kind of water-cooled snakelike heat exchange tube axial flow reactor Download PDFInfo
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- CN208742509U CN208742509U CN201820900969.8U CN201820900969U CN208742509U CN 208742509 U CN208742509 U CN 208742509U CN 201820900969 U CN201820900969 U CN 201820900969U CN 208742509 U CN208742509 U CN 208742509U
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- CN
- China
- Prior art keywords
- heat exchange
- water
- snakelike heat
- exchange tube
- tube sheet
- Prior art date
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 67
- 239000003054 catalyst Substances 0.000 claims abstract description 45
- 238000012423 maintenance Methods 0.000 claims description 12
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 3
- 150000002940 palladium Chemical class 0.000 claims description 2
- 238000004939 coking Methods 0.000 abstract description 5
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 52
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 30
- 238000006243 chemical reaction Methods 0.000 description 11
- 230000015572 biosynthetic process Effects 0.000 description 9
- 238000003786 synthesis reaction Methods 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000011068 loading method Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 230000008646 thermal stress Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000008030 elimination Effects 0.000 description 3
- 238000003379 elimination reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008439 repair process Effects 0.000 description 3
- 238000007086 side reaction Methods 0.000 description 3
- 206010011906 Death Diseases 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 206010020843 Hyperthermia Diseases 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 125000003827 glycol group Chemical group 0.000 description 2
- 238000005984 hydrogenation reaction Methods 0.000 description 2
- 230000036031 hyperthermia Effects 0.000 description 2
- BLLFVUPNHCTMSV-UHFFFAOYSA-N methyl nitrite Chemical compound CON=O BLLFVUPNHCTMSV-UHFFFAOYSA-N 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 1
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical group [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000006315 carbonylation Effects 0.000 description 1
- 238000005810 carbonylation reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000019441 ethanol Nutrition 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 239000010117 shenhua Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
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- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
The utility model discloses a kind of water-cooled snakelike heat exchange tube axial flow reactors, the upper cover and lower head are separately fixed at the top and bottom of cylinder, the snakelike heat exchange tube is distributed along the axial direction of cylinder, the upper flat tube sheet header is connected to the water outlet of snakelike heat exchange tube, the lower flat tube sheet header is connected to the water inlet end of snakelike heat exchange tube, the upper flat tube sheet header is connected to the header tank, the lower flat tube sheet header is connected to the diversion box, the upper flat tube sheet header and lower flat tube sheet header are supported on the upper and lower part of cylinder respectively, the both ends of the center fixed cylinder are separately fixed on flat tube sheet header and lower flat tube sheet header, water leg inner panel being wrapped on snakelike heat exchange tube along snakelike heat exchange tube outer wall, there is the water leg space for flowing water between the water leg inner panel and cylinder.The scheme that the utility model is cooperated using water leg and snakelike heat exchange tube, it can be ensured that entire catalyst bed is all uniformly cooled, and overtemperature coking will not occur.
Description
Technical field
The utility model relates to a kind of chemical reactor more particularly to a kind of water-cooled snakelike heat exchange tube Axial responses
Device.
Background technique
Existing hydrogenator is generally shell and tube reactor or plate-type reactor, and shell and tube reactor manages interior filling
Outer catalyst, pipe are water.The tubulation of hydrogenator is 45 × 4~φ of φ 70 × 4, the maximum production to have put into operation on the market at present
It can be 100,000 tons of ethylene glycol, hydrogenator specification accomplishes φ 6800HIt urges=10000 specification, because thermal stress elimination is not thorough
Bottom, bed resistance is high, and reactor leakage, device is in end-of-life state.The ethylene glycol dress that many places are put into operation on the market
It sets, practical monosystem is classified as 50,000 tons of ethylene glycol production capacity, and the hydrogenation reaction of 200,000 tons of ethylene glycol uses two series, four φ
4200、HIt urges=6000 hydrogenator parallel running, that there are Catalyst packings is few, move thermal energy power is poor, resistance is big, energy consumption is high,
Side reaction object is more, device is difficult to the defects of amplifying；Leak water in the plate of board-like hydrogenator, the outer loading catalyst of plate, gas are
Full Radial Flow theoretically can satisfy device enlargement glycol unit, be not suitable for hydrogenation reaction on Practical Project and use.By
Carburetting can occur with ethylene glycol in ethyl alcohol to react, if overtemperature coking easy to form occurs in bed.
It is enclosed when the heat exchange element of board-like hydrogenator by the cuboid plate of several 150~400 (plate is wide) × H (plate is high)
At periphery, this periphery is really one polygonal, and it is even that catalyst will appear became uneven, is easy to happen catalyst bed
There is coking phenomenon in hot-spot, has no idea to put into actual operation.
Existing oxonation device is generally shell and tube reactor or plate-type reactor, and shell and tube reactor manages interior filling
Outer catalyst, pipe are water.The tubulation of oxonation device is 25 × 2~φ of φ 32 × 2, the maximum production to have put into operation on the market at present
It can be 100,000 tons of ethylene glycol, oxonation device specification accomplishes φ 6000HIt urges=8000 specification, because thermal stress elimination is not thorough,
Bed resistance is high, and reactor leakage, device is in end-of-life state.The glycol unit that many places are put into operation on the market,
Practical monosystem is classified as 50,000 tons of ethylene glycol production capacity, and the oxonation of 200,000 tons of ethylene glycol uses two series, four φ 4600,
HIt urges=6000 oxonation device parallel running, that there are Catalyst packings is few, moves that thermal energy power is poor, resistance is big, energy consumption is high, easy
Decompose explosion, side reaction object is more, tube sheet is easily burnt, device is difficult to the defects of amplifying；
It is enclosed when the heat exchange element of board-like oxonation device by the cuboid plate of several 150~400 (plate is wide) × H (plate is high)
At periphery, this periphery is really one polygonal, and it is even that catalyst will appear became uneven, is easy to happen catalyst bed
Hot-spot is not suitable for oxonation on Practical Project and uses, due to methyl nitrite begin at 140 DEG C thermal decomposition occurs it is anti-
It answers, methyl nitrite will occur to thermally decompose completely at 155~160 DEG C, and pyrolysis occurs to release heat big
(3216j/g CH3It ONO), while being a volume increase reaction (2CH3ONO→CH3OH+CH2O+2NO), lead to temperature and pressure
Power quickly increases, and is bound to cause accident.
Existing methanol reactor is generally shell and tube reactor, plate-type reactor or the reaction of small tube sheet header tube beam formula
Device, shell and tube reactor, it is water that it is outer, which to manage interior loading catalyst, pipe,.The tubulation of methanol synthesis reactor be 38 × 2~φ of φ 44 ×
2, the methanol that the maximum production capacity to have put into operation on the market at present is 400,000 tons, methanol synthesis reactor specification accomplishes φ 4200HIt urges=
7000 specification, because thermal stress elimination is not thorough, bed resistance is high, and reactor leakage, shell and tube methanol synthesis reactor meets
Not enlarged methanol synthesizer.The country is in the enlarged methanol device of operation, and single series production capacity is 60 or 900,000 tons, reaction
Device is the board-like methanol synthesis reactor of Ka Sali or the small tube sheet header tube beam formula methanol synthesis reactor for wearing dimension, enlarged methanol
Reactor market is monopolized by foreign technology quotient.But the country introduces board-like nine sets of methanol synthesis reactor of Ka Sali, has six sets to let out
Leakage (such as the Inner Mongol long safe the energy, Anhui Hua Yi, the new new energy in Inner Mongol), must will urge when overhauling board-like heat exchanger component leak source
Change is drawn off, and the repair time is at one month or more.Introduce ten in the small tube sheet header tube beam formula methanol synthesis reactor country for wearing dimension
More than set, stringing difficulty is big, and the small side reaction object of heat exchange area is more, catalyst bed overtemperature (such as Shenhua packet header methanol-to-olefins item
Purpose methanol synthesis reactor), enlarged device is difficult to realize using two more parallel operations, separate unit methanol synthesis reactor
Enlargement.
Utility model content
The technical problem to be solved by the utility model is to: the easy temperature in the edge of existing serpentine heat exchanger is excessively high, mentions
A kind of water-cooled snakelike heat exchange tube axial flow reactor is supplied.
The utility model be by the following technical programs solution above-mentioned technical problem, the utility model include cylinder, on
End socket, lower head, water leg inner panel, snakelike heat exchange tube, upper flat tube sheet header, header tank, lower flat tube sheet header, diversion box, in
Heart fixed cylinder；The upper cover and lower head are separately fixed at the top and bottom of cylinder, and the snakelike heat exchange tube is along cylinder
Axial distribution, the upper flat tube sheet header are connected to the water outlet of snakelike heat exchange tube, the lower flat tube sheet header and snakelike heat exchange
The water inlet end of pipe is connected to, and the upper flat tube sheet header is connected to the header tank, the lower flat tube sheet header and the diversion box
Connection, the upper flat tube sheet header and lower flat tube sheet header are supported on the upper and lower part of cylinder, the center fixed cylinder respectively
Both ends be separately fixed on flat tube sheet header and lower flat tube sheet header, the water leg inner panel is along snakelike heat exchange tube outer wall
It is wrapped on snakelike heat exchange tube, there is the water leg space for flowing water, the water folder between the water leg inner panel and cylinder
The top for covering space is connected to header tank, and bottom is connected to diversion box.
The maintenance manhole for maintenance personal's disengaging is provided on the upper cover.Maintenance can easily be entered, do not had to
Upper cover is opened, maintenance complexity is reduced.
It is provided with gas feed on the upper cover, gas-collecting cap and gas vent, the collection are provided on the lower head
Gas cap is connected to gas vent.
It is provided with water outlet on the header tank, is provided with water inlet on the diversion box.Realize waterway circulating.
Catalyst is filled between the water leg inner panel, snakelike heat exchange tube, upper flat tube sheet header and lower flat tube sheet header.
The catalyst is palladium series catalyst.It can be used for ethylene glycol oxonation.
The catalyst is Cu-series catalyst.It can be used for methanol reaction.
The catalyst is nickel catalyst.It can be used for methanation reaction.
Catalyst self-unloading mouth is provided on the lower head.Handling for catalyst.
The utility model uses snakelike heat exchange tube for main heat-exchanging tube bundle, and snakelike heat exchange tube thoroughly disappears on axially and radially
Except thermal stress；Use coiled pipe for main heat-exchanging tube bundle, flat outside water-intake pipe in pipe, gas flow direction and water flowing direction are vertical
Straight state；Use coiled pipe for main heat-exchanging tube bundle, gas is axial flowing from top to bottom, the outer loading catalyst of interior water-intake pipe is managed,
Loaded catalyst is more, it is strong to move thermal energy power；Service personnel can enter reactor by maintenance manhole and repair.Due to snakelike
Heat exchanger tube is that no cooling water is cooled down at the edge close to cylinder, high temperature easy to form, and uses the water of the utility model
Collet inner panel and cylinder form a water leg space, can guarantee have water flowing cooling, avoid causing because of localized hyperthermia close
The catalyst temperature of cylinder is excessively high.
In entire reaction process, waterway channel are as follows: flat tube sheet header-snakelike heat exchange tube-is above flat under water inlet-diversion box-
Tube sheet header-header tank-water outlet.
Water leg space is formed between water leg inner panel and cylinder, inside has water flow to lead to, water leg inner panel internal edge
Catalyst can be cooling under recirculated water effect, and hot-spot will not occur.
The utility model has the advantage that the utility model is matched using water leg and snakelike heat exchange tube compared with prior art
The scheme of conjunction, it can be ensured that entire catalyst bed is all uniformly cooled, and coking will not occur.Waterway circulating is Natural Circulation,
Effectively prevent the thing that oxonation device and the explosion of carbonylation system occur in unexpected have a power failure for existing forced circulation oxonation device
Therefore occur, while preventing existing forced circulation methanol reaction or methanation reaction device and hydrogenator occurs in unexpected have a power failure
The accidents such as overtemperature coking.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Specific embodiment
It elaborates below to the embodiments of the present invention, the present embodiment before being with technical solutions of the utility model
It puts and is implemented, the detailed implementation method and specific operation process are given, but the protection scope of the utility model is unlimited
In following embodiments.
As shown in Figure 1, the present embodiment include cylinder 1, upper cover 2, lower head 3, water leg inner panel 4, snakelike heat exchange tube 5,
Upper flat tube sheet header 6, header tank 7, lower flat tube sheet header 8, diversion box 9, center fixed cylinder 10；The upper cover 2 and lower head 3
It is separately fixed at the top and bottom of cylinder 1, axial direction distribution of the snakelike heat exchange tube 5 along cylinder 1, the upper flat tube sheet header
6 are connected to the water outlet of snakelike heat exchange tube 5, and the lower flat tube sheet header 8 is connected to the water inlet end of snakelike heat exchange tube 5, it is described on
Flat tube sheet header 6 is connected to the header tank 7, and the lower flat tube sheet header 8 is connected to the diversion box 9, the upper flat tube sheet
Header 6 and lower flat tube sheet header 8 are supported on the upper and lower part of cylinder 1 respectively, and the both ends of the center fixed cylinder 10 are solid respectively
It is scheduled on flat tube sheet header 6 and lower flat tube sheet header 8, being wrapped in along 5 outer wall of snakelike heat exchange tube of water leg inner panel 4
There is the water leg space 11 for flowing water, the water leg on snakelike heat exchange tube 5, between the water leg inner panel 4 and cylinder 1
The top in space 11 is connected to header tank 7, and bottom is connected to diversion box 9.It is provided on the upper cover 2 for maintenance personal's disengaging
Repair manhole 12.Maintenance can easily be entered, do not have to open upper cover 2, reduce maintenance complexity.It is set on the upper cover 2
It is equipped with gas feed 13, gas-collecting cap 14 and gas vent 15 are provided on the lower head 3, the gas-collecting cap 14 is connected to gas and goes out
Mouth 15.It is provided with water outlet 16 on the header tank 7, is provided with water inlet 19 on the diversion box 9.Realize waterway circulating.Institute
It states and is filled with catalyst 17 between water leg inner panel 4, snakelike heat exchange tube 5, upper flat tube sheet header 6 and lower flat tube sheet header 8.Institute
Stating catalyst 17 is palladium series catalyst.It can be used for ethylene glycol oxonation.The catalyst 17 is Cu-series catalyst.It can be used for
Methanol reaction.The catalyst 17 is nickel catalyst.It can be used for methanation reaction.Catalyst is provided on the lower head 3
Self-unloading mouth 18.Handling for catalyst 17.
Use snakelike heat exchange tube 5 for main heat-exchanging tube bundle, snakelike heat exchange tube 5 is answered in axially and radially upper heat of thoroughly eliminating
Power；Use coiled pipe for main heat-exchanging tube bundle, flat outside water-intake pipe in pipe, gas flow direction and water flowing direction are vertical configuration
State；It uses coiled pipe for main heat-exchanging tube bundle, manages the outer loading catalyst of interior water-intake pipe, 17 loadings of catalyst are more, it is strong to move thermal energy power；
Service personnel can be repaired by maintenance manhole 12 into reactor, complete coiled pipe under the premise of not drawing off catalyst 17
Weld seam maintenance.Since snakelike heat exchange tube 5 is that no cooling water is cooled down at the edge close to cylinder 1, high temperature easy to form, and
One water leg space 11 is formed using the water leg inner panel 4 and cylinder 1 of the utility model, can guarantee there is water flowing cooling,
It avoids causing 17 temperature of catalyst close to cylinder 1 excessively high because of localized hyperthermia.
In entire reaction process, waterway channel are as follows: flat tube sheet header 8- snakelike heat exchange tube 5- under water inlet 19- diversion box 9-
Upper flat tube sheet header 6- header tank 7- water outlet 16.
Water leg space 11 is formed between water leg inner panel 4 and cylinder 1, inside has water flow to lead to, 4 internal edges of water leg inner panel
The catalyst 17 of edge can be cooling under recirculated water effect, and hot-spot will not occur.Center fixed cylinder 10 plays fixed bearing
Effect, effectively the whole bearing of snakelike heat exchange tube 5 can be got up.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (9)
1. a kind of water-cooled snakelike heat exchange tube axial flow reactor, which is characterized in that including cylinder, upper cover, lower head, water leg
Inner panel, snakelike heat exchange tube, upper flat tube sheet header, header tank, lower flat tube sheet header, diversion box, center fixed cylinder；The upper cover
The top and bottom of cylinder are separately fixed at lower head, the snakelike heat exchange tube is distributed along the axial direction of cylinder, the upper flat pipe
Plate header is connected to the water outlet of snakelike heat exchange tube, and the lower flat tube sheet header is connected to the water inlet end of snakelike heat exchange tube, described
Upper flat tube sheet header is connected to the header tank, and the lower flat tube sheet header is connected to the diversion box, the upper flat tube sheet connection
Case and lower flat tube sheet header are supported on the upper and lower part of cylinder respectively, and the both ends of the center fixed cylinder are separately fixed at flat
On tube sheet header and lower flat tube sheet header, water leg inner panel being wrapped on snakelike heat exchange tube along snakelike heat exchange tube outer wall,
There is the water leg space for flowing water, the top connection in the water leg space is catchmented between the water leg inner panel and cylinder
Case, bottom are connected to diversion box.
2. a kind of water-cooled snakelike heat exchange tube axial flow reactor according to claim 1, which is characterized in that the upper cover
On be provided with for maintenance personal disengaging maintenance manhole.
3. a kind of water-cooled snakelike heat exchange tube axial flow reactor according to claim 1, which is characterized in that the upper cover
On be provided with gas feed, be provided with gas-collecting cap and gas vent on the lower head, the gas-collecting cap is connected to gas vent.
4. a kind of water-cooled snakelike heat exchange tube axial flow reactor according to claim 1, which is characterized in that the header tank
On be provided with water outlet, be provided with water inlet on the diversion box.
5. a kind of water-cooled snakelike heat exchange tube axial flow reactor according to claim 1, which is characterized in that the water leg
Catalyst is filled between inner panel, snakelike heat exchange tube, upper flat tube sheet header and lower flat tube sheet header.
6. a kind of water-cooled snakelike heat exchange tube axial flow reactor according to claim 5, which is characterized in that the catalyst
For palladium series catalyst.
7. a kind of water-cooled snakelike heat exchange tube axial flow reactor according to claim 5, which is characterized in that the catalyst
For Cu-series catalyst.
8. a kind of water-cooled snakelike heat exchange tube axial flow reactor according to claim 5, which is characterized in that the catalyst
For nickel catalyst.
9. a kind of water-cooled snakelike heat exchange tube axial flow reactor according to claim 5, which is characterized in that the lower head
On be provided with catalyst self-unloading mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820900969.8U CN208742509U (en) | 2018-06-08 | 2018-06-08 | A kind of water-cooled snakelike heat exchange tube axial flow reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820900969.8U CN208742509U (en) | 2018-06-08 | 2018-06-08 | A kind of water-cooled snakelike heat exchange tube axial flow reactor |
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| Publication Number | Publication Date |
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| CN208742509U true CN208742509U (en) | 2019-04-16 |
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| CN201820900969.8U Active CN208742509U (en) | 2018-06-08 | 2018-06-08 | A kind of water-cooled snakelike heat exchange tube axial flow reactor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108654522A (en) * | 2018-06-08 | 2018-10-16 | 南京敦先化工科技有限公司 | A kind of coil jacket formula axial flow reactor |
| CN110070953A (en) * | 2019-04-24 | 2019-07-30 | 中国原子能科学研究院 | Flow distribution device and preparation method thereof for fast reactor intermediate heat exchanger |
-
2018
- 2018-06-08 CN CN201820900969.8U patent/CN208742509U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108654522A (en) * | 2018-06-08 | 2018-10-16 | 南京敦先化工科技有限公司 | A kind of coil jacket formula axial flow reactor |
| CN110070953A (en) * | 2019-04-24 | 2019-07-30 | 中国原子能科学研究院 | Flow distribution device and preparation method thereof for fast reactor intermediate heat exchanger |
| CN110070953B (en) * | 2019-04-24 | 2023-09-29 | 中国原子能科学研究院 | Flow distribution device for fast reactor intermediate heat exchanger and manufacturing method thereof |
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