CN204147575U - Adiponitrile half nitrile evaporimeter - Google Patents
Adiponitrile half nitrile evaporimeter Download PDFInfo
- Publication number
- CN204147575U CN204147575U CN201420482457.6U CN201420482457U CN204147575U CN 204147575 U CN204147575 U CN 204147575U CN 201420482457 U CN201420482457 U CN 201420482457U CN 204147575 U CN204147575 U CN 204147575U
- Authority
- CN
- China
- Prior art keywords
- tower body
- adiponitrile
- evaporimeter
- described tower
- half nitrile
- 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.)
- Expired - Lifetime
Links
- BTGRAWJCKBQKAO-UHFFFAOYSA-N adiponitrile Chemical compound N#CCCCCC#N BTGRAWJCKBQKAO-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 150000002825 nitriles Chemical class 0.000 title claims abstract description 34
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 44
- 239000000470 constituent Substances 0.000 claims abstract description 27
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 22
- 238000010438 heat treatment Methods 0.000 claims abstract description 8
- XZMCDFZZKTWFGF-UHFFFAOYSA-N Cyanamide Chemical compound NC#N XZMCDFZZKTWFGF-UHFFFAOYSA-N 0.000 claims description 7
- 239000008246 gaseous mixture Substances 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 230000018044 dehydration Effects 0.000 abstract description 4
- 238000006297 dehydration reaction Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 2
- 238000009835 boiling Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The utility model relates to a kind of adiponitrile half nitrile evaporimeter, comprise tower body, the top of described tower body is provided with charging aperture, the bottom of described tower body is provided with ammon entry hole, the bottom of described tower body is centrum shape, described tower body adopts jacket structured, described jacket structured hollow forms Steam Heating passage, and be provided with air intake and steam drain, be provided with the raker stirrer matched with the madial wall of described tower body in described tower body, described tower body is preferably divided into interconnective more piece and each joint is equipped with respective expansion joint.Keep constant reaction temperature in the utility model tower body, heavily divide into groups along tower body inwall equably in membranaceous to dirty, ammonia is reverse upwards to flow, and makes adiponitrile and half nitrile be that gas disengaging heavy constituent flows out with ammonia and is admitted in reactor.The utility model can reclaim adiponitrile in heavy constituent and half nitrile effectively, and half nitrile dehydration can be made to be adiponitrile, which thereby enhances the yield of adiponitrile.
Description
Technical field
The utility model relates to a kind of adiponitrile half nitrile evaporimeter, is mainly used in reclaiming the adiponitrile in the heavy constituent of discharging in adiponitrile reactor and half nitrile (intermediate of adiponitrile reaction), and can make half nitrile dehydration, is recovered as adiponitrile.
Background technology
The heavy constituent (liquid phase) that adiponitrile reactor is discharged is mainly tar and catalyst etc., also containing certain adiponitrile and half nitrile, at present also not to the technology that these adiponitriles and half nitrile extract and reclaim, cause unnecessary loss thus, reduce the yield of adiponitrile.
Utility model content
In order to overcome the above-mentioned defect of prior art, the utility model provides a kind of adiponitrile half nitrile evaporimeter, to reclaim adiponitrile in reactor heavy constituent and half nitrile, and makes half nitrile dehydration be adiponitrile, to improve the yield of adiponitrile.
The technical scheme that the utility model adopts: a kind of adiponitrile half nitrile evaporimeter, comprise tower body, the top of described tower body is provided with charging aperture, the bottom of described tower body is provided with ammon entry hole, described tower body adopts jacket structured, described jacket structured hollow forms Steam Heating passage, and is provided with air intake and steam drain.
The beneficial effects of the utility model: due to by jacket structured Steam Heating, temperature in tower body is remained on the constant reaction temperature on adiponitrile boiling point, the mode of ammonia is entered by its top feed and bottom, the heavily grouping entered in tower body moves down under gravity, ammonia upwards flows, in the process of both reverse flows, ammonia and the heavy constituent of gas-liquid two-phase contact with each other, adiponitrile and half nitrile are that gas departs from heavy constituent, together upwards flow with ammonia, through tower top charging aperture or be opened in separately tower top gas outlet discharge, thus achieve the separation and extraction to adiponitrile in heavy constituent and half nitrile, ammonia double nitrile dehydration simultaneously, it is made to change adiponitrile, the ammonia (being called for short cyanamide gaseous mixture) being mixed with adiponitrile and half nitrile (if any) reclaimed from tower body can return adiponitrile reactor, just can realize adiponitrile and half nitrile (if remaining at half nitrile of conversion that do not dewater) without the need to set handling equipment separately, and the raw material as reactor is participated in reaction by ammonia wherein, also cost is increased because using ammonia thus.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
See Fig. 1, the utility model provides a kind of adiponitrile half nitrile evaporimeter, comprise tower body, the top (abbreviation tower top) of described tower body is provided with charging aperture 1, the bottom (being called for short at the bottom of tower) of described tower body is provided with ammon entry hole 5, described tower body adopts jacket structured, and described jacket structured hollow 2 forms Steam Heating passage, and is provided with air intake and steam drain.
Preferably, the raker stirrer 4 coordinated with described tower body madial wall is provided with in described tower body, the heavy constituent flowed downward is scraped on tower body madial wall by this agitator, form the film continuing to flow downward being covered with sidewall, ensure that fully contacting of ammonia and half nitrile/adiponitrile contained in heavy constituent thus, and be conducive to half nitrile/adiponitrile and deviate from from heavy constituent, in addition, also help the mode of heating adapting to the heating of tower body jacket steam, keep the temperature of heavy constituent.
Preferably, described tower body is divided into interconnective more piece (such as, usually can preferably 3 save), be respectively equipped with respective described board-like agitator in described each joint, be beneficial to keep heavy constituent all can keep in described each joint along the equally distributed membranaceous flowing of tower body inwall.
Preferably, described each joint is respectively equipped with respective jacket structured, the jacket structured of described each joint is respectively equipped with respective expansion joint 3, be beneficial to keep the constant high temperature (usually can be 340 DEG C ~ 350 DEG C) needed for reaction, the medium stream tissue that the steam of each joint chuck is imported and exported in setting and chuck can according to prior art, to form effective vapor stream in chuck, ensure heating effect everywhere.
Preferably, the bottom of described tower body is centrum shape, is beneficial to flowing and the Optimum distribution of heavy constituent and ammonia.
Preferably, the charging aperture of described tower top is connected with heavy constituent feed pipe and cyanamide gaseous mixture discharge duct, also at tower top, cyanamide gaseous mixture exhaust outlet can be set separately for connecting cyanamide gaseous mixture discharge duct, and the charging aperture of tower top only connects heavy constituent feed pipe, different occasion can be adapted to better thus.
Preferably, the discharge gate separate with described ammon entry hole is provided with at the bottom of described tower, discharge through discharge gate when described heavy constituent flows at the bottom of tower, usually, described discharge gate should be arranged on the least significant end of the tower body bottom of described centrum shape, be beneficial to the outflow of heavy constituent, described ammon entry hole can be opened in other positions at the bottom of tower.
Preferably, heavy constituent deflector or other heavy constituent flow-guiding structures can be provided with in described tower body, described heavy constituent deflector or other heavy constituent flow-guiding structures are arranged on below described charging aperture or with described charging aperture and are connected, to enable the heavy constituent entered through charging aperture evenly or comparatively equably flow to tower body inwall.
Preferably, can be provided with ammonia deflector or other ammonia flow-guiding structures in described tower body, described ammonia deflector or other ammonia flow-guiding structures are arranged on below described ammon entry hole or with described ammon entry hole and are connected, and are beneficial to optimize the ammonia flow tissue entered in tower body.
Preferably, the ammonia-feeding pipe road that described ammon entry hole connects is provided with ammonia heater, to ensure the ammonia temperature (usually can be 250 DEG C) entered in tower body.
Claims (10)
1. an adiponitrile half nitrile evaporimeter, is characterized in that comprising tower body, and the top of described tower body is provided with charging aperture, the bottom of described tower body is provided with ammon entry hole, described tower body adopts jacket structured, and described jacket structured hollow forms Steam Heating passage, and is provided with air intake and steam drain.
2. adiponitrile half nitrile evaporimeter as claimed in claim 1, is characterized in that being provided with the raker stirrer matched with the madial wall of described tower body in described tower body.
3. adiponitrile half nitrile evaporimeter as claimed in claim 2, is characterized in that described tower body is divided into interconnective more piece, is respectively equipped with respective described board-like agitator in described each joint.
4. adiponitrile half nitrile evaporimeter as claimed in claim 3, it is characterized in that described each joint is respectively equipped with respective jacket structured, the jacket structured of described each joint is respectively equipped with respective expansion joint.
5. adiponitrile half nitrile evaporimeter as claimed in claim 4, is characterized in that the bottom of described tower body is centrum shape.
6. the adiponitrile half nitrile evaporimeter as described in claim 1,2,3,4 or 5, it is characterized in that the charging aperture of described tower top is connected with heavy constituent feed pipe and cyanamide gaseous mixture discharge duct, or, described tower top is provided with the cyanamide gaseous mixture exhaust outlet for connecting cyanamide gaseous mixture discharge duct separately, and the charging aperture of described tower top only connects heavy constituent feed pipe.
7. adiponitrile half nitrile evaporimeter as claimed in claim 6, is characterized in that being provided with the discharge gate separate with described ammon entry hole at the bottom of described tower.
8. adiponitrile half nitrile evaporimeter as claimed in claim 7, it is characterized in that being provided with heavy constituent flow-guiding structure in described tower body, described heavy constituent flow-guiding structure is arranged on below described charging aperture or with described charging aperture and is connected.
9. adiponitrile half nitrile evaporimeter as claimed in claim 8, it is characterized in that being provided with ammonia flow-guiding structure in described tower body, described ammonia flow-guiding structure is arranged on below described ammon entry hole or with described ammon entry hole and is connected.
10. adiponitrile half nitrile evaporimeter as claimed in claim 9, is characterized in that the ammonia-feeding pipe road that described ammon entry hole connects is provided with ammonia heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420482457.6U CN204147575U (en) | 2014-08-25 | 2014-08-25 | Adiponitrile half nitrile evaporimeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420482457.6U CN204147575U (en) | 2014-08-25 | 2014-08-25 | Adiponitrile half nitrile evaporimeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204147575U true CN204147575U (en) | 2015-02-11 |
Family
ID=52505728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420482457.6U Expired - Lifetime CN204147575U (en) | 2014-08-25 | 2014-08-25 | Adiponitrile half nitrile evaporimeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204147575U (en) |
-
2014
- 2014-08-25 CN CN201420482457.6U patent/CN204147575U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20150211 |