CN106140044A - A kind of liquid ammonia evaporating device for cyclohexanone oxamidinating reaction - Google Patents
A kind of liquid ammonia evaporating device for cyclohexanone oxamidinating reaction Download PDFInfo
- Publication number
- CN106140044A CN106140044A CN201510190530.1A CN201510190530A CN106140044A CN 106140044 A CN106140044 A CN 106140044A CN 201510190530 A CN201510190530 A CN 201510190530A CN 106140044 A CN106140044 A CN 106140044A
- Authority
- CN
- China
- Prior art keywords
- ammonia
- temperature
- cooler
- evaporator
- blender
- 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.)
- Pending
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
A kind of liquid ammonia evaporating device for cyclohexanone oxamidinating reaction, liquefied ammonia first passes through liquefied ammonia preheater and the recirculated water heat exchange from cooler two, it is decreased back to cooling tower through heat exchange Posterior circle coolant-temperature gage, and liquefied ammonia temperature enters cooler one after raising and carries out heat exchange with reaction cycle liquid, enter ammonia evaporator after reducing circulation fluid temperature and be gasificated into gas ammonia, gas ammonia outlet is provided with temperature teletransmission and temperature signal can be sent to controller, by controlling the temperature control valve (TCV) regulation low-pressure steam addition on ammonia evaporator vapours pipeline, gas ammonia enters the pressure of blender more than circulating-pump outlet pressure by Valve controlling.It is an advantage of the current invention that recirculated water enters cooler two and is cooled in technic index by reaction cycle liquid, the recirculated water after temperature raises enters liquefied ammonia preheater and liquefied ammonia heat exchange, and temperature returns to cooling tower after reducing.
Description
Technical field
The present invention relates to a kind of liquid ammonia evaporating device for cyclohexanone oxamidinating reaction, belong to field of chemical equipment.
Background technology
Cyclohexanone-oxime is the key intermediate producing caprolactam, traditional cyclohexanone-oxime commercial production uses hydroxylamine assay, being to carry out reacting realizing by certain salt of Ketohexamethylene Yu azanol, industrialized mainly have 3 kinds of techniques: one is the Raschig process (HSO method) of Inventa company of Switzerland exploitation；Two is the nitrogen oxide reduction method (NO method) of BASF Corp. of Germany and the exploitation of Inventa company of Switzerland；Three is the phosphatic hydroxylamine method (HPO method) of DSM N. V. of Holland exploitation.The common ground of these 3 kinds of methods is all by hydroxylamine salt oximate, and intermediate steps is many, complex process, uses corrosion and with serious pollution raw material, and three wastes discharge amount is big, and environmental pollution is serious, the most urgently develops a kind of brand-new technology to produce cyclohexanone-oxime.
Early 1980s, first developed under new catalytic material titanium molecular sieve catalysis effect by Enichem company of Italy, Ketohexamethylene and ammonia, hydrogen peroxide can carry out Ammoximation reaction, the one direct highly selective of step prepares cyclohexanone-oxime, this technique enormously simplify production procedure, plant investment is greatly reduced, production cost reduces, and three waste discharge is few, thus cyclohexanone oxamidinating is described as being a kind of environment amenable new technique.Cyclohexanone oxamidinating reaction primary response formula is as follows:
Liquefied ammonia is prone to transport, is all that liquefied ammonia heating and gasifying is become gas ammonia, needs to provide heat with low-pressure steam in gasification in industrial cyclohexanone oxamidinating production process.And cyclohexanone oxamidinating reaction is strong exothermal reaction, amount of heat can be released, production process needs utilize recirculated water to be removed by heat.
Summary of the invention
The present invention is directed to above-mentioned deficiency, a kind of liquid ammonia evaporating device for cyclohexanone oxamidinating reaction is provided, this device is applicable to the cyclohexanone oxamidinating process units with ammonia, Ketohexamethylene, hydrogen peroxide as raw material, cyclohexanone oxamidinating reaction heat can be used for liquid ammonia gasification by the present invention, not only can reduce quantity of steam needed for liquid ammonia gasification, also can reduce Ammoximation reaction device recirculated water consumption, reduce recirculated water return water temperature, reach energy-saving and cost-reducing purpose.
The present invention is achieved in that
A kind of liquid ammonia evaporating device for cyclohexanone oxamidinating reaction, liquefied ammonia first passes through liquefied ammonia preheater and the recirculated water heat exchange from cooler two, it is decreased back to cooling tower through heat exchange Posterior circle coolant-temperature gage, and liquefied ammonia temperature enters cooler one after raising and carries out heat exchange with reaction cycle liquid, enter ammonia evaporator after reducing circulation fluid temperature and be gasificated into gas ammonia, gas ammonia outlet is provided with temperature teletransmission and temperature signal can be sent to controller, by controlling the temperature control valve (TCV) regulation low-pressure steam addition on ammonia evaporator vapours pipeline, gas ammonia enters the pressure of blender more than circulating-pump outlet pressure by Valve controlling.Recirculated water enters cooler two and is cooled in technic index by reaction cycle liquid, and the recirculated water after temperature raises enters liquefied ammonia preheater and liquefied ammonia heat exchange, and temperature returns to cooling tower after reducing.
Concrete structure is:
A kind of liquid ammonia evaporating device for cyclohexanone oxamidinating reaction, reactor top composition blood circulation is reconnected with circulating pump, cooler one, cooler two, blender after via line pipeline is connected successively bottom reactor, after liquefied ammonia pipeline is connected with liquefied ammonia preheater, it is connected with cooler one again, cooler is connected with ammonia evaporator once circuit pipeline, ammonia evaporator is connected with blender, and liquefied ammonia preheater is also connected with cooler two.
Recirculated water conveying pipeline it is provided with in cooler two；Condensed water conveying pipeline it is provided with in ammonia evaporator.
Ammonia evaporator jet chimney is provided with the automatic regulating valve automatically controlling outlet gas ammonia temperature, and the gaseous phase outlet of ammonia evaporator is provided with the temperature teletransmission that temperature signal can be sent to automatic regulating valve.
The gaseous phase outlet of ammonia evaporator is connected to blender, is provided with valve, is provided with Pressure gauge between valve and blender before entering blender.
Described each equipment is connected by pipeline, and pipeline is equipped with control valve.
A kind of liquid ammonia evaporating device for cyclohexanone oxamidinating reaction that the present invention provides, has an advantage in that:
1, flow process is simple, and equipment investment expense is low.
2, not only can reduce quantity of steam needed for liquid ammonia gasification, also can reduce Ammoximation reaction device recirculated water consumption, reduce recirculated water return water temperature, reach energy-saving and cost-reducing purpose.
Accompanying drawing explanation
Fig. 1 is a kind of liquid ammonia evaporating device structural representation for cyclohexanone oxamidinating reaction.
Such as figure, 1. reactor, 2 circulating pumps, 3. cooler one, 4. cooler two, 5. blender, 6. liquefied ammonia preheater, 7. ammonia evaporator, 8. automatic temperature control valve, 9. temperature teletransmission, 10. valve, 11. ammonia pressure gauges.
Embodiment 1
A kind of liquid ammonia evaporating device for cyclohexanone oxamidinating reaction, reactor 1 top composition blood circulation is reconnected with circulating pump 2, cooler 1, cooler 24, blender 5 after via line pipeline is connected successively bottom reactor 1, after liquefied ammonia pipeline is connected with liquefied ammonia preheater 6, it is connected with cooler 1 again, cooler 1 via line pipeline is connected with ammonia evaporator 7, ammonia evaporator 7 is connected with blender 5, and liquefied ammonia preheater 6 is also connected with cooler 24.
Recirculated water conveying pipeline it is provided with in cooler 24；Condensed water conveying pipeline it is provided with in ammonia evaporator 7.
Ammonia evaporator 7 jet chimney is provided with the automatic regulating valve 8 automatically controlling outlet gas ammonia temperature, and the gaseous phase outlet of ammonia evaporator 7 is provided with the temperature teletransmission 9 that temperature signal can be sent to automatic regulating valve 8.
The gaseous phase outlet of ammonia evaporator 7 is connected to blender 5, is provided with valve 10, is provided with Pressure gauge 11 between valve 10 and blender 5 before entering blender.
Described each equipment is connected by pipeline, and pipeline is equipped with control valve.
The technique using the said equipment to carry out is
Liquefied ammonia to liquid ammonia ball tank first passes through liquefied ammonia preheater and the recirculated water heat exchange from cooler two, it is decreased back to cooling tower through heat exchange Posterior circle coolant-temperature gage, and liquefied ammonia temperature enters cooler one after raising and carries out heat exchange with reaction cycle liquid, enter ammonia evaporator after reducing circulation fluid temperature and be gasificated into gas ammonia, gas ammonia outlet is provided with temperature teletransmission and temperature signal can be sent to controller, by controlling the temperature control valve (TCV) regulation low-pressure steam addition on ammonia evaporator jet chimney, gas ammonia is provided with Pressure gauge before entering blender, gas ammonia pressure then passes through Valve controlling, require that the pressure entering blender is more than circulating-pump outlet pressure.Recirculated water enters cooler two and is cooled in technic index by reaction cycle liquid, and the recirculated water after temperature raises enters liquefied ammonia preheater and liquefied ammonia heat exchange, and temperature returns to cooling tower after reducing.
Claims (5)
1. the liquid ammonia evaporating device for cyclohexanone oxamidinating reaction, it is characterized in that: reactor (1) bottom via line pipeline reconnects reactor (1) top composition blood circulation with circulating pump (2), cooler one (3), cooler two (4), blender (5) after being connected successively, after liquefied ammonia pipeline is connected with liquefied ammonia preheater (6), it is connected with cooler one (3) again, cooler one (3) via line pipeline is connected with ammonia evaporator (7), ammonia evaporator (7) is connected with blender (5), and liquefied ammonia preheater (6) is also connected with cooler two (4).
Liquid ammonia evaporating device for cyclohexanone oxamidinating reaction the most according to claim 1, it is characterised in that: it is provided with recirculated water conveying pipeline in cooler two (4)；Ammonia evaporator is provided with condensed water conveying pipeline in (7).
Liquid ammonia evaporating device for cyclohexanone oxamidinating reaction the most according to claim 1, it is characterized in that: ammonia evaporator (7) jet chimney is provided with the automatic regulating valve (8) automatically controlling outlet gas ammonia temperature, and the gaseous phase outlet of ammonia evaporator (7) is provided with the temperature teletransmission (9) that temperature signal can be sent to automatic regulating valve (8).
Liquid ammonia evaporating device for cyclohexanone oxamidinating reaction the most according to claim 1, it is characterized in that: the gaseous phase outlet of ammonia evaporator (7) is connected to blender (5), before entering blender, it is provided with valve (10), between valve (10) and blender (5), is provided with Pressure gauge (11).
Liquid ammonia evaporating device for cyclohexanone oxamidinating reaction the most according to claim 1, it is characterised in that: described each equipment is connected by pipeline, and pipeline is equipped with control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510190530.1A CN106140044A (en) | 2015-04-21 | 2015-04-21 | A kind of liquid ammonia evaporating device for cyclohexanone oxamidinating reaction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510190530.1A CN106140044A (en) | 2015-04-21 | 2015-04-21 | A kind of liquid ammonia evaporating device for cyclohexanone oxamidinating reaction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106140044A true CN106140044A (en) | 2016-11-23 |
Family
ID=58057848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510190530.1A Pending CN106140044A (en) | 2015-04-21 | 2015-04-21 | A kind of liquid ammonia evaporating device for cyclohexanone oxamidinating reaction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106140044A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107469367A (en) * | 2017-08-21 | 2017-12-15 | 河南心连心化肥有限公司 | The liquid ammonia evaporating device and method of a kind of recoverable energy |
| CN109854947A (en) * | 2019-02-02 | 2019-06-07 | 华电电力科学研究院有限公司 | A kind of energy utilization device and its working method of liquid ammonia gasification system |
-
2015
- 2015-04-21 CN CN201510190530.1A patent/CN106140044A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107469367A (en) * | 2017-08-21 | 2017-12-15 | 河南心连心化肥有限公司 | The liquid ammonia evaporating device and method of a kind of recoverable energy |
| CN107469367B (en) * | 2017-08-21 | 2023-05-05 | 河南心连心化学工业集团股份有限公司 | Liquid ammonia evaporation device and method capable of recycling energy |
| CN109854947A (en) * | 2019-02-02 | 2019-06-07 | 华电电力科学研究院有限公司 | A kind of energy utilization device and its working method of liquid ammonia gasification system |
| CN109854947B (en) * | 2019-02-02 | 2024-04-30 | 华电电力科学研究院有限公司 | Energy utilization device of liquid ammonia gasification system and working method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207112362U (en) | Avoid the nitrogen fertilizer plant high-pressure carbon dioxide blowdown system of line clogging | |
| CN104829494A (en) | Energy-saving urea production system and production process thereof | |
| CN101928016B (en) | Process for producing ammonium sulfate by adopting negative pressure double-countercurrent evaporation and crystallization mode | |
| CN104787766B (en) | Heat energy utilization method and system in production of polysilicon | |
| CN104501528B (en) | Precooling system and precooling method for producing liquefied natural gas by methane synthesis gas | |
| CN106140044A (en) | A kind of liquid ammonia evaporating device for cyclohexanone oxamidinating reaction | |
| CN220317417U (en) | Heat recovery device for sulfuric acid system dry suction section and sulfuric acid production line | |
| CN204544148U (en) | A kind of liquid ammonia evaporating device for cyclohexanone oxamidinating reaction | |
| CN219009958U (en) | Rectification deamination system | |
| CN204644041U (en) | A kind of ammonia nitrogen waste water treatment system | |
| CN104555922A (en) | New technology for producing hydrogen by conversion of methyl alcohol and water vapor | |
| CN113772640B (en) | Method and device for producing nitric acid | |
| CN104829032A (en) | Ammonia-nitrogen wastewater treatment system | |
| CN214829037U (en) | Device for producing dilute nitric acid by magnesium nitrate method | |
| CN109019725A (en) | A kind of energy conservation water vaporization tower | |
| CN106679243B (en) | Refrigerating system capable of reducing liquid ammonia consumption | |
| CN204162675U (en) | Without circulation methanation system | |
| CN202671464U (en) | Urine concentration device used for urea production system | |
| CN105217654A (en) | Alkylation waste sulfuric acid recycling treatment device and method | |
| CN104312651B (en) | Without circulation methanation system | |
| CN204138621U (en) | With de-benzene heat oil-poor for thermal source without steam coal air purifying apparatus | |
| CN204079843U (en) | Middle pressure in carbonic acid gas stripping device decomposes condenser system | |
| CN203295398U (en) | Circulating device for preparing urea | |
| CN108036667A (en) | Produce the raw material cryogenic energy utilization technique of thionyl chloride | |
| CN214142145U (en) | Low temperature waste heat recovery utilizes system in taurine preparation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161123 |