CN207435077U - A kind of processing system of acrylonitrile recycling tower bottoms - Google Patents
A kind of processing system of acrylonitrile recycling tower bottoms Download PDFInfo
- Publication number
- CN207435077U CN207435077U CN201721107458.2U CN201721107458U CN207435077U CN 207435077 U CN207435077 U CN 207435077U CN 201721107458 U CN201721107458 U CN 201721107458U CN 207435077 U CN207435077 U CN 207435077U
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- CN
- China
- Prior art keywords
- gas
- liquid
- acrylonitrile
- tower bottoms
- condensed fluid
- 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- Withdrawn - After Issue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
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 238000004064 recycling Methods 0.000 title claims abstract description 26
- 239000007788 liquid Substances 0.000 claims abstract description 100
- 239000002699 waste material Substances 0.000 claims abstract description 34
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 16
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 16
- 239000004571 lime Substances 0.000 claims abstract description 16
- 230000008676 import Effects 0.000 claims abstract description 7
- 239000012530 fluid Substances 0.000 claims description 26
- 238000010438 heat treatment Methods 0.000 claims description 11
- 238000010992 reflux Methods 0.000 claims description 7
- 238000003860 storage Methods 0.000 claims description 5
- 239000012043 crude product Substances 0.000 claims description 4
- 238000010791 quenching Methods 0.000 claims description 3
- 230000000171 quenching effect Effects 0.000 claims description 3
- 230000003197 catalytic effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 13
- 230000008569 process Effects 0.000 abstract description 11
- 238000009434 installation Methods 0.000 abstract description 4
- 230000008439 repair process Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 48
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 12
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 12
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 12
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 11
- 238000009835 boiling Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 239000012535 impurity Substances 0.000 description 8
- 239000012071 phase Substances 0.000 description 8
- 238000005265 energy consumption Methods 0.000 description 7
- LELOWRISYMNNSU-UHFFFAOYSA-N hydrogen cyanide Chemical compound N#C LELOWRISYMNNSU-UHFFFAOYSA-N 0.000 description 7
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 description 6
- 238000011084 recovery Methods 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 5
- 229910021529 ammonia Inorganic materials 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 5
- 230000008020 evaporation Effects 0.000 description 5
- 239000007791 liquid phase Substances 0.000 description 5
- 235000001014 amino acid Nutrition 0.000 description 4
- 150000001413 amino acids Chemical class 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 150000002825 nitriles Chemical class 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- STNJBCKSHOAVAJ-UHFFFAOYSA-N Methacrolein Chemical compound CC(=C)C=O STNJBCKSHOAVAJ-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000007255 decyanation reaction Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000012495 reaction gas Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Abstract
The utility model discloses a kind of processing systems of acrylonitrile recycling tower bottoms, including heat exchanger, MVR evaporators, gas-liquid separator, waste liquid tank, compressor and lime set equipment, kettle liquid import are set at the top of heat exchanger, bottom sets kettle liquid to export；The kettle liquid outlet of the liquid-inlet connection exchanger base of MVR evaporators, the gas vent connection gas-liquid separator of MVR evaporators, the gas that then gas-liquid separator separates are obtained is delivered to compressor, the compressor can be compressed the gas that gas-liquid separator separates obtain, and then improve the temperature and pressure of gas, heat content is consequently increased, as the external source gas heated to tower bottoms, gas phase in the treatment process of recycling tower bottoms is realized to make full use of, the latent heat of gas phase is recycled, improve the thermal efficiency, simplify apparatus structure, reduce failure rate, reduce installation area, it makes it easier to repair and conserve.
Description
Technical field
The utility model belongs to the processing technology field of acrylonitrile recycling tower bottoms, and in particular to a kind of acrylonitrile recovery tower
The processing system of kettle liquid.
Background technology
Ammoxidation of hydrocarbons unsaturated nitrile is a key areas of petro chemical industry, wherein, utilize ammoxidation of propylene
Method production acrylonitrile has been achieved for important breakthrough.Since propylene ammmoxidation process raw material is cheap and easy to get, technological process is simple and production
Quality is preferable, therefore the production method has obtained extensive industrial applications.
The technological process of traditional propylene ammmoxidation process is：(1) by propylene liguid and liquid ammonia from propylene, ammonia tank field
Into propylene, ammonia evaporator, the propylene after gasification and ammonia are then mixed into fluidized bed reactor of going forward side by side, from pneumatics
The plant air of machine enters reactor bottom, and enters fluidized-bed reactor by dispersion plate, thus propylene, ammonia and air
It can be reacted in a fluidized bed reactor；(2) gas of generation is discharged and led to from reactor head by cyclone separator
Subcooler cools down, and is then sent in chilling tower, in the dilute sulfuric acid sprayed in chilling tower and unreacted ammonia；(3) again will
The gas discharged from chilling tower is delivered to absorption tower, and the water declined in absorption tower absorbs can in the upward reaction gas of adverse current
The product of dissolving, thus product acrylonitrile, by-product acetonitrile, HCN, methacrylaldehyde and acetone etc. are soluble in water, other on-condensible gases
It is discharged from tower top, air is discharged into after burning；(4) absorbing liquid in absorption tower is delivered to refined recovery tower, recovery tower can incite somebody to action
Acrylonitrile product and by-product in absorbing liquid further separate, to obtain the acrylonitrile of high-purity, wherein, the tower top of recovery tower
The azeotropic mixture of hydrogen cyanide, acrylonitrile and water is distillated, then inputs this azeotropic mixture into decyanation tower to obtain the propylene of high-purity
Nitrile, recovery tower middle part side take-off crude acetonitrile aqueous solution is interior containing a small amount of acrylonitrile, HCN and low boiling impurity, needs further
Refined or directly burning, recycles and contains a certain amount of acrylonitrile, acetonitrile, HCN and height boiling point organic impurities in tower bottoms；
(5) recycling tower bottoms is delivered to four-effect evaporator system, recycling tower bottoms initially enters 1st effective evaporator, in 1st effective evaporator
Unevaporated recycling tower bottoms is sent to 2nd effect evaporator, and required heat is evaporated in 2nd effect evaporator by 1st effective evaporator top
Steam supplies, and the liquid come out from 2nd effect evaporator is sent in triple effect evaporator, and 2nd effect evaporator top steam is used for seething with excitement three
Evaporator is imitated, the charging of four-effect evaporator is the unvaporized liquid from triple effect evaporator, and the heat source of four-effect evaporator is three
Evaporator top steam is imitated, unvaporized liquid is sent to incinerator for waste liquid, the top steam of four-effect evaporator in four-effect evaporator
Pass through condenser；All one to quadruple effect condensate liquid collect after with aminoacid stripping tower is pumped into, withdraw receipts tower reactor back and forth by stripper
Acrylonitrile, acetonitrile, HCN and the low boiling point organic impurities contained in liquid, then by aminoacid stripping tower tower bottoms through biochemical treatment system
Outer row after system processing.
Prepared by the high-purity that above-mentioned traditional propylene ammmoxidation process realizes acrylonitrile, at the place of acrylonitrile recycling tower bottoms
In science and engineering skill, recycling tower bottoms is delivered to multi-effect evaporator, acrylonitrile in kettle liquid, second are realized by multi-effect evaporator
The recovery processing of nitrile, HCN and low boiling point organic impurities.But due in Multi-effect Evaporation Processes, on the one hand, previous evaporator
Top steam cannot be used directly as the heat source of this evaporator, can only as latter evaporator or afterwards several evaporators heat source,
So that the structure of traditional ammoxidation of propylene subtraction unit is more complicated, high failure rate and to be not easy to regular maintenance, floor space larger；
And with the continuous evaporation of tower bottoms, the content of the low boiling point organic impurities in latter evaporator is less than in previous evaporator
The content of low boiling point organic impurities, but since latter evaporimeter thermal source is the top steam of previous evaporator, it is continuous with technique
Extension, the heat source temperature of latter evaporator are less than the heat source temperature of previous evaporator, and evaporation more and more lower in heat source temperature
In the case that the content of low boiling point organic impurities in device is fewer and fewer, the evaporation of the rear triple effect evaporator in four-effect evaporator is made
With more and more weaker or even can not achieve and separate low boiling point organic impurities with tower bottoms；On the other hand, Multi-effect Evaporation Processes
The heat source of middle head end evaporator needs endlessly external equipment offer, thus energy consumption is larger, and the thermal efficiency is relatively low；On in addition,
It states in treatment process, the stripping in aminoacid stripping tower is that the condensate liquid in the steam and aminoacid stripping tower provided by external equipment is indirect
Heat transfer is realized, since the thermal efficiency of indirect heat transfer is relatively low, to the cyanogen root content in kettle liquid is caused to be less than 5mg/L, must be needed
Substantial amounts of external steam is consumed, this undoubtedly further increases the energy consumption of whole processing technology.
Therefore, how the processing unit of existing acrylonitrile recycling tower bottoms is improved to simplify apparatus structure, is subtracted
Few installation area reduces energy consumption, improves the thermal efficiency, this is a skill urgently to be resolved hurrily to those skilled in the art
Art problem.
Utility model content
Therefore, the technical problem to be solved by the utility model is to overcome the processing of existing acrylonitrile recycling tower bottoms
Apparatus structure is complicated, high failure rate and be not easy to regular maintenance, take up a large area, high energy consumption, the low thermal efficiency the defects of, Jin Erti
For a kind of processing system of acrylonitrile recycling tower bottoms.
For this purpose, the technical solution that the application takes is,
A kind of processing system of acrylonitrile recycling tower bottoms, including：
Heat exchanger (1), top set kettle liquid import, and bottom sets kettle liquid to export, and the heat exchanger (1) is used for kettle
Liquid carries out heat exchange heating；
MVR evaporators (2), liquid-inlet connect the kettle liquid outlet of heat exchanger (1) bottom, liquid outlet connection gas
Liquid/gas separator (3)；
The liquid outlet connection waste liquid output main road of the gas-liquid separator (3), the port of export of the waste liquid output main road
Waste liquid storage branch and waste liquid circulation branch are connected respectively, and the port of export connection waste liquid tank (4) of the waste liquid storage branch is described
The port of export of waste liquid circulation branch is connected by waste liquid circulation circuit with the liquid-inlet of MVR evaporators (2)；
Compressor (5), the gas vent of entrance connection gas-liquid separator (3), outlet connection MVR evaporators (2) heat
Medium entrance, MVR evaporators (2) Crude product input connect heat exchanger (1) heating medium inlet；
Lime set equipment (6), entrance connection heat exchanger (1) Crude product input, outlet connection condensed fluid processing unit.
The condensed fluid processing unit includes exporting main road with the condensed fluid of lime set equipment (6) outlet connection, described
The port of export of condensed fluid output main road connects condensed fluid processing branch and condensed fluid circulation branch road, the condensate liquid respectively
The port of export connection stripper (7) of body processing branch, the gas vent connection gas incinerator (8) of the stripper (7), institute
State the liquid outlet connection biochemical treatment apparatus (9) of stripper (7), the port of export connection propylene of the condensed fluid circulation branch road
Nitrile chilling tower (10).
Promising waste reflux is set to provide the reflux pump (11) of power on the waste liquid circulation circuit.
The gas incinerator (8) is catalytic burning device or heating power incinerator.
The lime set equipment (6) pumps for lime set.
Stripping gas input port is additionally provided in the bottom of the stripper (7), the stripping gas input port is inhaled with acrylonitrile
Receive the connection of tower (12) offgas outlet, the stripping gas and condensed fluid direct contact heat transfer.
Technical solutions of the utility model have the following advantages that：
1. the processing system of acrylonitrile recycling tower bottoms provided by the utility model, including heat exchanger, MVR evaporators, gas
Liquid/gas separator, waste liquid tank, compressor and lime set equipment set kettle liquid import at the top of heat exchanger, and bottom sets kettle liquid to export,
The heat exchanger is used to kettle liquid carrying out heat exchange heating；The kettle liquid outlet of the liquid-inlet connection exchanger base of MVR evaporators,
The gas vent connection gas-liquid separator of MVR evaporators, the gas for then obtaining gas-liquid separator separates are delivered to compressor,
The compressor can be compressed the gas that gas-liquid separator separates obtain, and then improve the temperature and pressure of gas, heat content
Increase therewith, as the external source gas heated to tower bottoms, in the treatment process for realizing recycling tower bottoms
Gas phase makes full use of, and has recycled the latent heat of gas phase, improves the thermal efficiency, while the top steam for avoiding previous evaporator cannot
The defects of using, can only being used as the heat source of latter evaporator or rear several evaporators directly as the heat source of this evaporator,
Apparatus structure is simplified, failure rate is reduced, reduces installation area, making it easier to repair and conserve；In addition, present treatment
In system, in addition to start up, entire processing system provides heat source without external equipment, reduces energy consumption.
2. the processing system of acrylonitrile recycling tower bottoms provided by the utility model, stripping is provided in the bottom of stripper
Gas input port, stripping gas input port are connected with acrylonitrile absorbing tower gas vent, thus make using tail gas from acrylonitrile absorption tower
For stripping gas, so as to avoid the input of external steam heat source, energy consumption is saved；In addition acrylonitrile absorbing tower exit gas with
Condensed fluid in stripper contacts directly, and compared with the indirect heat exchange in traditional handicraft, reduces thermal resistance, improves heat transfer and passes
Matter efficiency, while can also to contact the cyanogen root content in the liquid phase after being stripped with stripping gas less than 5mg/L, can directly into
Row biochemical treatment.
Description of the drawings
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution of the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it describes below
In attached drawing be the utility model some embodiments, for those of ordinary skill in the art, do not paying creativeness
On the premise of work, other attached drawings are can also be obtained according to these attached drawings.
Fig. 1 is the processing system for the acrylonitrile recycling tower bottoms that the utility model embodiment 1 provides；
Wherein, reference numeral is as follows：
1- heat exchangers；2-MVR evaporators；3- gas-liquid separators；4- waste liquid tanks；5- compressors；6- lime set equipment；7- vapour
Stripper；8- gas incinerators；9- biochemical treatment apparatus；10- acrylonitrile quenching towers；11- reflux pumps；12- acrylonitrile absorbing towers.
Specific embodiment
The technical solution of the utility model will be clearly and completely described below, it is clear that described embodiment is
The utility model part of the embodiment, instead of all the embodiments.Based on the embodiment in the utility model, this field is common
Technical staff's all other embodiments obtained without making creative work belong to the utility model protection
Scope.In addition, as long as technical characteristic involved in the utility model different embodiments disclosed below is each other
Not forming conflict can be combined with each other.
Embodiment 1
The processing system of acrylonitrile recycling tower bottoms provided in this embodiment, including：
Heat exchanger 1, top set kettle liquid import, and bottom sets kettle liquid to export, and the heat exchanger 1 is used to carry out kettle liquid
Heat exchange heating；
MVR evaporators 2, liquid-inlet connect the kettle liquid outlet of 1 bottom of heat exchanger, liquid outlet connection gas-liquid point
From device 3, gas-liquid separator 3 can separate gas-liquid mixture in MVR evaporators 2 and obtain gas phase and liquid phase, by gained liquid
It is mutually inputted from the liquid outlet of gas-liquid separator 3 to waste liquid and exports main road, the port of export of the waste liquid output main road connects respectively
Waste liquid stores branch and waste liquid circulation branch, the port of export connection waste liquid tank 4 of the waste liquid storage branch, the waste liquid circulation branch
The port of export on road is connected by waste liquid circulation circuit with the liquid-inlet of MVR evaporators 2, using this Partial Liquid Phase as heating
The liquid phase of processing sets promising waste reflux to provide the reflux pump 11 of power on waste liquid circulation circuit；
Compressor 5, the gas phase that gas-liquid separator 3 obtains after being separated to gas-liquid mixture in MVR evaporators 2 input to
The entrance of compressor 5, the 2 heat medium import of outlet connection MVR evaporators of compressor 5, and using compressed gas phase as MVR
The heat source of evaporator 2, heats tower bottoms, and by the way that gas phase is compressed, temperature and pressure gets a promotion, heat content with
Increase, as the external source gas heated to tower bottoms, realize gas in the treatment process of recycling tower bottoms
Phase makes full use of, and has recycled the latent heat of gas phase, improves the thermal efficiency, while the top steam for avoiding previous evaporator cannot be straight
The defects of connecing and used as the heat source of this evaporator, can only being used as the heat source of latter evaporator or rear several evaporators, letter
Apparatus structure is changed, has reduced failure rate, reduces installation area, making it easier to repair and conserve；MVR evaporators 2 add
Thermal medium outlet connects 1 heating medium inlet of heat exchanger, and the liquid obtained after can so being heated is further to tower
Kettle liquid is preheated, and has both improved the temperature of tower bottoms, moreover it is possible to the heat of the liquid obtained after being heated is reused,
The thermal efficiency is improved, then the liquid after being preheated is inputted to lime set equipment 6, the liquid outlet connection of the lime set equipment 6 is cold
Solidifying liquid handling device in the present embodiment, as needed, selects lime set equipment 6 to be pumped for lime set；
The condensed fluid processing unit includes exporting main road, the condensation with the condensed fluid of the outlet of lime set equipment 6 connection
The port of export of liquid output main road connects condensed fluid processing branch and condensed fluid circulation branch road respectively, at the condensed fluid
Manage the port of export connection stripper 7 of branch, the bottom of stripper 7 is provided with stripping gas input port, the stripping gas input port with
12 offgas outlet of acrylonitrile absorbing tower connects, the stripping gas and condensed fluid direct contact heat transfer, by the gas after being stripped
Body is delivered to gas incinerator 8, in the present embodiment, as needed, selective catalysis incinerator, in other embodiments,
It can also select heating power incinerator；Liquid after being stripped is delivered to biochemical treatment apparatus 9, the condensed fluid Xun Huan
The port of export connection acrylonitrile quenching tower 10 of branch.Stripping gas input port, stripping gas input port are provided in the bottom of stripper
It is connected with acrylonitrile absorbing tower gas vent, thus using tail gas from acrylonitrile absorption tower as stripping gas, so as to avoid outer
The input of portion's steam source, saves energy consumption；Acrylonitrile absorbing tower exit gas and the condensed fluid in stripper are straight in addition
Contact, compared with the indirect heat exchange in traditional handicraft, reduces thermal resistance, improves heat and mass efficiency, while can also cause
The cyanogen root content contacted with stripping gas in the liquid phase after being stripped is less than 5mg/L, can directly carry out biochemical treatment.
Obviously, the above embodiments are merely examples for clarifying the description, and is not intended to limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And the obvious variation thus extended out or
Among the protection domain that variation is created still in the utility model.
Claims (6)
1. a kind of processing system of acrylonitrile recycling tower bottoms, which is characterized in that including：
Heat exchanger (1), top set kettle liquid import, and bottom sets kettle liquid to export, and the heat exchanger (1) is used to carry out kettle liquid
Heat exchange heating；
MVR evaporators (2), liquid-inlet connect the kettle liquid outlet of heat exchanger (1) bottom, liquid outlet connection gas-liquid point
From device (3)；
The liquid outlet connection waste liquid output main road of the gas-liquid separator (3), the port of export difference of the waste liquid output main road
Connect waste liquid storage branch and waste liquid circulation branch, the port of export connection waste liquid tank (4) of the waste liquid storage branch, the waste liquid
The port of export of circulation branch road is connected by waste liquid circulation circuit with the liquid-inlet of MVR evaporators (2)；
Compressor (5), the gas vent of entrance connection gas-liquid separator (3), outlet connection MVR evaporators (2) heat medium
Import, MVR evaporators (2) Crude product input connect heat exchanger (1) heating medium inlet；
Lime set equipment (6), entrance connection heat exchanger (1) Crude product input, outlet connection condensed fluid processing unit.
2. the processing system of acrylonitrile recycling tower bottoms according to claim 1, which is characterized in that at the condensed fluid
Managing device includes exporting main road, the outlet of the condensed fluid output main road with the condensed fluid of lime set equipment (6) outlet connection
End connects condensed fluid processing branch and condensed fluid circulation branch road, the port of export connection of the condensed fluid processing branch respectively
Stripper (7), the gas vent connection gas incinerator (8) of the stripper (7), the liquid outlet of the stripper (7)
Connect biochemical treatment apparatus (9), the port of export connection acrylonitrile quenching tower (10) of the condensed fluid circulation branch road.
3. the processing system of acrylonitrile recycling tower bottoms according to claim 2, which is characterized in that in the waste liquid circulation
Promising waste reflux is set to provide the reflux pump (11) of power on circuit.
4. the processing system of the acrylonitrile recycling tower bottoms according to Claims 2 or 3, which is characterized in that the gas is burnt
It is catalytic burning device or heating power incinerator to burn device (8).
5. the processing system of acrylonitrile recycling tower bottoms according to claim 4, which is characterized in that the lime set equipment
(6) pumped for lime set.
6. the processing system of acrylonitrile recycling tower bottoms according to claim 5, which is characterized in that in the stripper
(7) bottom is additionally provided with stripping gas input port, and the stripping gas input port is connected with acrylonitrile absorbing tower (12) offgas outlet,
The stripping gas and condensed fluid direct contact heat transfer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721107458.2U CN207435077U (en) | 2017-08-31 | 2017-08-31 | A kind of processing system of acrylonitrile recycling tower bottoms |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721107458.2U CN207435077U (en) | 2017-08-31 | 2017-08-31 | A kind of processing system of acrylonitrile recycling tower bottoms |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207435077U true CN207435077U (en) | 2018-06-01 |
Family
ID=62302284
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721107458.2U Withdrawn - After Issue CN207435077U (en) | 2017-08-31 | 2017-08-31 | A kind of processing system of acrylonitrile recycling tower bottoms |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207435077U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107473294A (en) * | 2017-08-31 | 2017-12-15 | 上海晟兰石化工程技术有限公司 | A kind of handling process and processing system of acrylonitrile recovery tower tower bottoms |
| CN112441947A (en) * | 2019-09-05 | 2021-03-05 | 中石油吉林化工工程有限公司 | Four-effect evaporator for producing acrylonitrile |
-
2017
- 2017-08-31 CN CN201721107458.2U patent/CN207435077U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107473294A (en) * | 2017-08-31 | 2017-12-15 | 上海晟兰石化工程技术有限公司 | A kind of handling process and processing system of acrylonitrile recovery tower tower bottoms |
| CN107473294B (en) * | 2017-08-31 | 2024-01-26 | 上海晟兰石化工程技术有限公司 | Treatment process and treatment system for tower bottom liquid of acrylonitrile recovery tower |
| CN112441947A (en) * | 2019-09-05 | 2021-03-05 | 中石油吉林化工工程有限公司 | Four-effect evaporator for producing acrylonitrile |
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Address after: 200120 301, 3 floor, 2 building, 5278 Chuansha Road, Pudong New Area, Shanghai. Patentee after: SHANGHAI SHENGLAN PETROCHEMICAL ENGINEERING TECHNOLOGY Co.,Ltd. Address before: 200120 room 409, Pu circuit 489, Pudong New Area free trade pilot area, Shanghai. Patentee before: SHANGHAI SHENGLAN PETROCHEMICAL ENGINEERING TECHNOLOGY Co.,Ltd. |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180601 Effective date of abandoning: 20240126 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20180601 Effective date of abandoning: 20240126 |