CN208320017U - Naphthalene vaporising device in a kind of phthalic anhydride preparation process - Google Patents
Naphthalene vaporising device in a kind of phthalic anhydride preparation process Download PDFInfo
- Publication number
- CN208320017U CN208320017U CN201820735752.6U CN201820735752U CN208320017U CN 208320017 U CN208320017 U CN 208320017U CN 201820735752 U CN201820735752 U CN 201820735752U CN 208320017 U CN208320017 U CN 208320017U
- Authority
- CN
- China
- Prior art keywords
- naphthalene
- cylinder
- steam
- reboiler
- phthalic anhydride
- 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- Withdrawn - After Issue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
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 title claims abstract description 260
- LGRFSURHDFAFJT-UHFFFAOYSA-N Phthalic anhydride Natural products C1=CC=C2C(=O)OC(=O)C2=C1 LGRFSURHDFAFJT-UHFFFAOYSA-N 0.000 title claims abstract description 25
- JHIWVOJDXOSYLW-UHFFFAOYSA-N butyl 2,2-difluorocyclopropane-1-carboxylate Chemical compound CCCCOC(=O)C1CC1(F)F JHIWVOJDXOSYLW-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- 239000007788 liquid Substances 0.000 claims abstract description 33
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 20
- 239000000470 constituent Substances 0.000 claims abstract description 20
- 239000010959 steel Substances 0.000 claims abstract description 20
- 238000010438 heat treatment Methods 0.000 claims abstract description 11
- 230000014759 maintenance of location Effects 0.000 claims description 6
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 claims description 4
- BGOFCVIGEYGEOF-UJPOAAIJSA-N helicin Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1OC1=CC=CC=C1C=O BGOFCVIGEYGEOF-UJPOAAIJSA-N 0.000 claims description 4
- 238000010025 steaming Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 7
- 239000012535 impurity Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 2
- 230000002779 inactivation Effects 0.000 description 2
- 239000006200 vaporizer Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011176 pooling Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The utility model relates to naphthalene vaporising devices in a kind of phthalic anhydride preparation process, including naphthalene evaporator, including upper cover, cylinder and lower head, the lower part of the cylinder is connected to the lower part of naphthalene reboiler by pipeline, the top of the naphthalene reboiler is connected to the middle and upper part of cylinder, the bottom of naphthalene reboiler is equipped with heavy constituent discharge outlet, and naphthalene reboiler is passed through high steam to liquid naphthalene indirect heating；The lower head bottom is equipped with heavy constituent discharge outlet, uniformly distributed angle steel outside the cylinder, the angle steel upper end is connected with around the steam inlet channel of cylinder, angle steel lower end is connected with the steam outlet passage around cylinder, closed steam channel is formed between the steam inlet channel, steam outlet passage, angle steel and cylinder, demister is arranged in cylinder internal upper part；The utility model increases naphthalene reboiler and is used together with naphthalene evaporator, heats to liquid naphthalene, improves the output of naphthalene, and liquid naphthalene is made to be fully converted into gas naphthalene, good separating effect, and production run is stablized.
Description
Technical field
The utility model relates to chemical equipment technical fields, and in particular to naphthalene vaporising device in a kind of phthalic anhydride preparation process.
Background technique
Impurity phase is to more in crude naphthalene, and in the production of naphthalene legal system phthalic anhydride, naphthalene vapo(u)rization system is essential, effect
There is two o'clock: (1) guaranteeing the gasification result of crude naphthalene, realizes that high-temperature liquid naphthalene completely vaporizes into gas naphthalene, except the drop in devaporation,
It after gas naphthalene enters vaporizer, mixes with air, is reacted into oxidator.(2) crude naphthalene impurity is more, and high steam is to liquid naphthalene
It is heated, its heavy constituent is made not enter reactor, avoid that temperature is excessively high and catalyst inactivation.In order not to cause above situation
Occur, naphthalene vapour system will realize the functions such as the separation of crude naphthalene heavy constituent and light component in phthalic anhydride production.
Naphthalene vapo(u)rization system is single naphthalene evaporator in the prior art, the heavy constituent in normal production, in crude naphthalene
Base of evaporator is accumulated in for a long time, occurs that poor evaporation effect, naphthalene pipeline blockage, yield are unstable etc. to influence factor of production.
Utility model content
The purpose of the utility model is to provide a kind of good separating effect, naphthalene evaporation dress in phthalic anhydride preparation process easy to operate
It sets.
In order to achieve the above purposes, the technical solution adopted by the utility model is:
Naphthalene vaporising device in a kind of phthalic anhydride preparation process, including naphthalene evaporator, the naphthalene evaporator include upper cover, cylinder
And lower head, the lower part of the cylinder are connected to the lower part of naphthalene reboiler by pipeline, the top of the naphthalene reboiler is connected to
The bottom of the middle and upper part of cylinder, naphthalene reboiler is equipped with heavy constituent discharge outlet, and naphthalene reboiler is passed through high steam and adds indirectly to liquid naphthalene
Heat；It is equipped with naphthalene steam (vapor) outlet at the top of the upper cover, the lower head bottom is equipped with heavy constituent discharge outlet, uniform outside the cylinder
Angle steel is laid, the angle steel upper end is connected with around the steam inlet channel of cylinder, and angle steel lower end is connected with the steaming around cylinder
Vapor outlet channel forms closed steam channel, institute between the steam inlet channel, steam outlet passage, angle steel and cylinder
The spiral helicine steam-heating pipe of setting in lower head is stated, demister is arranged in cylinder internal upper part.
Further, setting first pressure gauge and the first thermometer at the top of naphthalene evaporator, the middle part setting of naphthalene evaporator the
Third thermometer and second liquid level gauge is arranged in two pressure gauges, second temperature meter and first liquid level gauge, naphthalene base of evaporator.
Further, it is equipped with hemispherical retention plate in cylinder, retains uniformly distributed through-hole on plate.
Further, the demister includes the silk screen layer of first the filter plate layer and upper layer of lower layer, and the just filter plate layer is in half
Spherical shape, the channel of uniformly distributed serpentine on first filter plate layer.
Further, steam heat exchanging tube is equipped in the cylinder, the steam heat exchanging tube includes steam inlet tube, heat exchange ring
The opposite end of pipe and steam outlet pipe, the heat exchange endless tube is respectively connected to steam inlet tube and steam outlet pipe, the heat exchange
Endless tube includes the pipeline of a plurality of connection steam inlet tube and steam outlet pipe.
Further, the heat exchange endless tube is obliquely installed, and tilt angle is horizontal by 5~15 °.
The utility model has the following beneficial effects: naphthalene vaporising device in a kind of phthalic anhydride preparation process of the utility model, increases
Naphthalene reboiler is used together with naphthalene evaporator, is heated to liquid naphthalene, is improved the output of naphthalene, and high production efficiency, is made liquid
Body naphthalene is fully converted into gas naphthalene, it is ensured that non-entrained liquids naphthalene in gas naphthalene, good separating effect, production run is stable, grasps
Make simple；Naphthalene reboiler and naphthalene base of evaporator are respectively provided with heavy constituent discharge outlet, periodically discharge, and heavy constituent is timely with light component
Separation improves production efficiency；Uniformly distributed angle steel outside the cylinder increases the intensity of cylinder, and steam inlet channel, steam go out
Closed steam channel is formed between mouth channel, angle steel and cylinder, achievees the effect that heat cylinder or kept the temperature；Lower envelope
The spiral helicine steam-heating pipe of setting in head, can heavy constituent pooling zone heating to bottom, making may be remaining in heavy constituent
Light component volatilization, reinforces separating effect；It is equipped with hemispherical retention plate in cylinder, is placed in liquid naphthalene liquid level, it can be to volatilization
Gas naphthalene in the liquid naphthalene carried secretly do preliminary filtering；Demister can intercept the liquid naphthalene of gas naphthalene entrainment, guarantee gas naphthalene
In non-entrained liquids naphthalene, wherein first filter plate layer is hemispherical, the channel of uniformly distributed serpentine on first filter plate layer, guarantees removal liquid
Naphthalene, makes the liquid naphthalene of retention flow to cylinder inner wall, and silk screen layer plays the role of further removing liquid naphthalene；The steam being arranged in cylinder changes
Heat pipe can make the heating of liquid naphthalene more uniform, and heat exchange endless tube is obliquely installed when ensure that steam liquefied and steam can be discharged changes
Heat pipe.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of naphthalene vaporising device in a kind of phthalic anhydride preparation process of the utility model.
Fig. 2 is the schematic diagram of internal structure of naphthalene vaporising device in a kind of phthalic anhydride preparation process of the utility model.
Fig. 3 is that the steam-heating pipe of naphthalene vaporising device and the structure of angle steel are shown in a kind of phthalic anhydride preparation process of the utility model
It is intended to.
Fig. 4 is the structural schematic diagram of the heat exchange endless tube of naphthalene vaporising device in a kind of phthalic anhydride preparation process of the utility model.
Numbering in the drawing are as follows: 1 be naphthalene evaporator, 2 be upper cover, 3 be cylinder, 4 be lower head, 5 be naphthalene reboiler, 6 be
Naphthalene steam (vapor) outlet, 7 be angle steel, 8 be steam inlet channel, 9 be steam outlet passage, 10 be steam-heating pipe, 11 be demister,
13 it is retention plate, 14 is steam heat exchanging tube, 15 is first pressure gauge, 16 is the first thermometer, 17 is second pressure gauge, 18 is the
Two thermometers, 19 be first liquid level gauge, 20 be third thermometer, 21 be second liquid level gauge, 111 be that just filter plate layer, 112 are silk screen
Layer, 141 be steam inlet tube, 142 be exchange heat endless tube, 143 be steam outlet pipe.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and detailed description:
Embodiment 1
As shown in Figures 1 to 4, naphthalene vaporising device in a kind of phthalic anhydride preparation process, including naphthalene evaporator 1, the naphthalene evaporation
Device 1 includes upper cover 2, cylinder 3 and lower head 4, and the lower part of the cylinder 3 is connected to the lower part of naphthalene reboiler 5, institute by pipeline
The top for stating naphthalene reboiler 5 is connected to the middle and upper part of cylinder 3, and the bottom of naphthalene reboiler 5 is equipped with heavy constituent discharge outlet, naphthalene reboiler
5 are passed through high steam to liquid naphthalene indirect heating；Naphthalene steam (vapor) outlet 6 is equipped at the top of the upper cover 2,4 bottom of lower head is set
There are heavy constituent discharge outlet, uniformly distributed angle steel 7 outside the cylinder 3, the steam that 7 upper end of angle steel is connected with circular cylinder 3 enters
Mouth channel 8,7 lower end of angle steel are connected with the steam outlet passage 9 around cylinder 3, and the steam inlet channel 8, steam (vapor) outlet are logical
Closed steam channel is formed between road 9, angle steel 7 and cylinder 3, the spiral helicine steam-heating pipe 10 of setting in the lower head 4,
Demister 11 is arranged in 3 internal upper part of cylinder.First pressure gauge 15 and the first thermometer 16, naphthalene evaporator 1 are set at the top of naphthalene evaporator 1
Middle part setting second pressure gauge 17, second temperature meter 18 and first liquid level gauge 19, third thermometer is arranged in 1 bottom of naphthalene evaporator
20 and second liquid level gauge 21.
Embodiment 2
As shown in Figures 1 to 4, with embodiment 1, the difference is that: hemispherical retention plate 13 is equipped in cylinder 3,
Retain uniformly distributed through-hole on plate 13；The demister 11 includes the first filter plate layer 111 of lower layer and the silk screen layer 112 on upper layer, institute
It is hemispherical to state just filter plate layer 111, the channel of uniformly distributed serpentine on first filter plate layer 111；It is changed in the cylinder 3 equipped with steam
Heat pipe 14, the steam heat exchanging tube 14 include steam inlet tube 141, heat exchange endless tube 142 and steam outlet pipe 143, the heat exchange
The opposite end of endless tube 142 is respectively connected to steam inlet tube 141 and steam outlet pipe 143, and the heat exchange endless tube 142 includes a plurality of
Connect the pipeline of steam inlet tube 141 and steam outlet pipe 143；The heat exchange endless tube 142 is obliquely installed, and tilt angle is and water
Plane is in 5~15 °.
Working principle and step:
Impurity is more in crude naphthalene, and heavy constituent is more, this recombination is divided into the invalid component in the production of naphthalene legal system phthalic anhydride, and easily causes
Line clogging, hot spot be excessively high, catalyst inactivation, system resistance are big, influences being normally carried out for production.Meanwhile naphthalene legal system phthalic anhydride needs
The raw material wanted is that gas naphthalene mixes with air reaction production phthalic anhydride, it is therefore desirable to eliminate heavy constituent, improve the content of gas naphthalene.It is logical
Overregulate in phthalic anhydride preparation process the flow of the high steam of naphthalene reboiler 5 in naphthalene vaporising device, naphthalene vaporising device gas naphthalene
The temperature of pressure, temperature and liquid naphthalene, using the difference of component boiling point, realization gas naphthalene is efficiently separated with other heavy constituents.
Liquid naphthalene after preheating respectively enters in naphthalene evaporator 1 and naphthalene reboiler 5, is adjusted into the steaming of 5 mesohigh of naphthalene reboiler
The throttle flow of vapour controls pressure, the temperature of temperature and liquid naphthalene of gas naphthalene in naphthalene evaporator 1, is fully converted into liquid naphthalene
Gas naphthalene.Since crude naphthalene impurity is more, heavy constituent is more, and by the gas-liquid separation of naphthalene vaporising device, light component completely vaporizes into gas
Body naphthalene realizes next link into phthalic anhydride preparation process, i.e., feeds, mix with air in vaporizer.Heavy constituent, that is, naphthalene slag accumulation
In the bottom of naphthalene evaporator 1 and naphthalene reboiler 5, certain interval of time is discharge naphthalene slag in naphthalene slag ladle.
It is real not to limit the utility model for the embodiment of the above, the only preferred embodiment of the utility model
Apply range, therefore all equivalent change or modifications done according to technical solution described in the utility model patent range, it should be included in this
In utility model application the scope of the patents.
Claims (6)
1. naphthalene vaporising device in a kind of phthalic anhydride preparation process, including naphthalene evaporator, which is characterized in that the naphthalene evaporator includes upper
End socket, cylinder and lower head, the lower part of the cylinder are connected to the lower part of naphthalene reboiler by pipeline, the naphthalene reboiler it is upper
Portion is connected to the middle and upper part of cylinder, and the bottom of naphthalene reboiler is equipped with heavy constituent discharge outlet, and naphthalene reboiler is passed through high steam to liquid
Naphthalene indirect heating；Naphthalene steam (vapor) outlet is equipped at the top of the upper cover, the lower head bottom is equipped with heavy constituent discharge outlet, the cylinder
External uniformly distributed angle steel, the angle steel upper end are connected with around the steam inlet channel of cylinder, and angle steel lower end is connected with circular
The steam outlet passage of cylinder forms closed steam between the steam inlet channel, steam outlet passage, angle steel and cylinder
Demister is arranged in channel, the interior spiral helicine steam-heating pipe of setting of the lower head, cylinder internal upper part.
2. naphthalene vaporising device in a kind of phthalic anhydride preparation process according to claim 1, which is characterized in that at the top of naphthalene evaporator
First pressure gauge and the first thermometer, middle part setting second pressure gauge, second temperature meter and the first liquid level of naphthalene evaporator are set
Third thermometer and second liquid level gauge is arranged in meter, naphthalene base of evaporator.
3. naphthalene vaporising device in a kind of phthalic anhydride preparation process according to claim 1, which is characterized in that be equipped in cylinder and be in
Hemispheric retention plate retains uniformly distributed through-hole on plate.
4. naphthalene vaporising device in a kind of phthalic anhydride preparation process according to claim 1, which is characterized in that the demister packet
The silk screen layer of first the filter plate layer and upper layer of lower layer is included, the just filter plate layer is hemispherical, uniformly distributed serpentine on first filter plate layer
Channel.
5. naphthalene vaporising device in a kind of phthalic anhydride preparation process according to claim 1, which is characterized in that set in the cylinder
There is steam heat exchanging tube, the steam heat exchanging tube includes steam inlet tube, exchange heat endless tube and steam outlet pipe, the heat exchange endless tube
Opposite end is respectively connected to steam inlet tube and steam outlet pipe, and the heat exchange endless tube includes a plurality of connection steam inlet tube and steaming
The pipeline of vapor outlet pipe.
6. naphthalene vaporising device in a kind of phthalic anhydride preparation process according to claim 5, which is characterized in that the heat exchange endless tube
It is obliquely installed, tilt angle is horizontal by 5~15 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820735752.6U CN208320017U (en) | 2018-05-17 | 2018-05-17 | Naphthalene vaporising device in a kind of phthalic anhydride preparation process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820735752.6U CN208320017U (en) | 2018-05-17 | 2018-05-17 | Naphthalene vaporising device in a kind of phthalic anhydride preparation process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208320017U true CN208320017U (en) | 2019-01-04 |
Family
ID=64774041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820735752.6U Withdrawn - After Issue CN208320017U (en) | 2018-05-17 | 2018-05-17 | Naphthalene vaporising device in a kind of phthalic anhydride preparation process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208320017U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108355367A (en) * | 2018-05-17 | 2018-08-03 | 河南庆安化工高科技股份有限公司 | Naphthalene vaporising device in phthalic anhydride preparation process |
| CN108355367B (en) * | 2018-05-17 | 2024-06-28 | 河南庆安化工技术研发有限公司 | Naphthalene evaporation device in phthalic anhydride preparation process |
-
2018
- 2018-05-17 CN CN201820735752.6U patent/CN208320017U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108355367A (en) * | 2018-05-17 | 2018-08-03 | 河南庆安化工高科技股份有限公司 | Naphthalene vaporising device in phthalic anhydride preparation process |
| CN108355367B (en) * | 2018-05-17 | 2024-06-28 | 河南庆安化工技术研发有限公司 | Naphthalene evaporation device in phthalic anhydride preparation process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20231114 Granted publication date: 20190104 |
|
| PP01 | Preservation of patent right | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190104 Effective date of abandoning: 20240628 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20190104 Effective date of abandoning: 20240628 |