CN201239625Y - Novel nitrator - Google Patents
Novel nitrator Download PDFInfo
- Publication number
- CN201239625Y CN201239625Y CNU2008201050031U CN200820105003U CN201239625Y CN 201239625 Y CN201239625 Y CN 201239625Y CN U2008201050031 U CNU2008201050031 U CN U2008201050031U CN 200820105003 U CN200820105003 U CN 200820105003U CN 201239625 Y CN201239625 Y CN 201239625Y
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- central circulating
- circulating tube
- nitrator
- agitator
- central
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Abstract
The utility model discloses a novel nitrator which is characterized in that a kettle top plate (12) and a kettle bottom plate (13) are mounted in the reaction kettle cylinder body (1); a central circulating pipe (2) is mounted in the middle of the reaction kettle cylinder body (1) and located between the kettle top plate (12) and the kettle bottom plate (13); tubular heat exchangers (4) are arranged around the central circulating pipe (2) in the kettle body; the tubular arrays (5) of the heat exchanger is communicated with the lower opening of the central circulating pipe (2) through the kettle bottom plate (13); a feed inlet (7) is arranged on the reaction kettle cylinder body (1) and located on the upper opening flange of the central circulating pipe (2). The utility model has the advantages of increasing the heat exchanging surface, enabling the structure of the nitrator not to be more complicated, improving the material circulation amount, reducing the residual amount of the nitrified material, and effectively restraining the generation of various nitrified materials.
Description
Technical field
The utility model relates to a kind of liquid phase kettle type nitration device, is specifically related to a kind of novel nitrator, is particularly useful for many still series connection continuous nitrification processes.
Background technology
At present, known liquid-phase nitration device mainly contains two kinds of patterns: the nitrator of the kettle type nitration device of tep reel pipe and band outer circulation tubular heat exchanger.The former is owing to make limitation aspect the processing at coil pipe, and its heat exchange area can not be done too greatly, and nitration reaction strong exothermal reaction normally.Heat exchange area is too little, nitration reaction heat to shift out difficulty big, this just makes that equipment capacity is little on the one hand, and vigorous reaction easily takes place on the other hand, causes bumping and even can blast.The latter adopts tubular heat exchanger, can guarantee enough heat exchange areas, but this class nitrator adopts U type pipe that two series connection tubular heat exchangers are circulated by an axial-flow pump more, or a tubular heat exchanger directly connected with an axial-flow pump, structure more complicated, less, the nitrated material mixed effect of internal circulating load are unsatisfactory.In order to overcome relatively poor this situation of mixed effect, the patent of Yu Zongning " the nitrator " (patent No.: 92228523.3) two feed pipe positions of material are adjusted, it is aimed at the axial flow pump inlet, and be provided with the taper inhalation mask in the import department of axial-flow pump, match with it, have the ring that gathers materials at this taper inhalation mask, carry out the mixed chemical course of reaction, reduced mixed material from the discharging opening escaped quantity thereby can directly enter axial-flow pump after material is entered from charging aperture.Also adopt the method for increasing dividing plate in this patent, attempt reduces escaped quantity.On the discharge connection of axial-flow pump, cooling jacket is set mixed material is cooled off in order to reduce the temperature of charge of axial-flow pump outlet, in this patent, also to adopt.
In general, present liquid-phase nitration device, coiled nitrator heat exchange area is little, and utilization rate of equipment and installations is low, and has potential safety hazard; And the tubular structure relative complex, no matter how to be adjusted the position by these two feed pipes of itrated compound and nitrating agent and can not accomplish to reduce to greatest extent itrated material further contacts generation with nitrating agent polynitration, because its specific axial-flow pump is used, internal circulating load is subjected to certain limitation, and is relatively large by the itrated compound residual volume.
Summary of the invention
The purpose of this utility model is: a kind of novel nitrator is provided, can increases heat exchange area, do not make the nitrator structure too complicated again, improve solid circulating rate, reduce by the residual volume of itrated compound, can effectively suppress the generation of polynitration thing simultaneously again.
Technical solution of the present utility model is: still top board and still base plate are installed in the reactor cylindrical shell, central circulating tube is installed between still top board and still base plate at the center of reactor cylindrical shell, around central circulating tube tubular heat exchanger is installed in the reactor, heat exchanger tube is installed the material charging aperture and is positioned at central circulating tube edge suitable for reading at the end opening of still base plate connection central circulating tube on the reactor cylindrical shell.
In a kind of novel nitrator of the present utility model, the material charging aperture is the bushing type charging aperture, is made up of the outer mounting sleeve integral body of interior pipe.
In a kind of novel nitrator of the present utility model, agitator is installed in the central circulating tube, agitator is propeller agitator or turbine agitator; Propeller agitator is installed in the central circulation sleeve pipe, shaft dead in line central circulating tube axis; Turbine agitator is installed in the end opening of central circulating tube, shaft dead in line central circulating tube axis.
During work, nitrating agent is walked the interior pipe of bushing type charging aperture, treated promptly that by itrated compound nitrated substance walks the annular space of sleeve pipe and interior pipe, nitrating agent with entered central circulating tube jointly by itrated compound, in the moment that enters central circulating tube, nitrating agent is reacted by surrounding by itrated compound, can't be further produces the polynitration thing with nitrated material haptoreaction; Simultaneously, propeller agitator flows downward material in the central circulating tube when fully being mixed, and the tube side of last material process heat exchanger tube upwards flows and realizes heat exchange, and nitration reaction heat is shifted out by the cooling water of heat exchanger shell pass.
The utlity model has following advantage: 1, central circulating tube is installed at reactor cylindrical shell center, and agitator is installed in the central circulating tube, and so not only liquid circulation amount is big, and good mixing effect has ensured big heat exchange area simultaneously, has strengthened heat transfer, mass transfer effect.
2, the material charging aperture is a bushing type, walking by itrated compound in the sleeve pipe annular space is raw material, it is nitric acid or nitration mixture or other material as nitrating agent that interior pipe is walked nitrating agent, like this after material enters reactor, nitrating agent at first with fresh being contacted by itrated compound, effectively avoid nitrating agent to contact, reduced the generation of polynitration thing with the itrated compound that has generated.
3, charging aperture position alignment central circulating tube edge suitable for reading, flow rate of liquid is big herein, and stroke is the longest in reactor, effectively reduces freshly to be left the chance of reactor by itrated compound direct short-circuit, improves conversion of raw material.
4, adopt built-in tubular heat exchanger, heat exchange area is big, efficient is high, compact conformation, and not only less investment helps improving stirring efficiency simultaneously, strengthens mixed effect.
5, the utility model compared with prior art, by measuring, the series connection of two stills can be reached more than 99% by the conversion ratio of itrated compound, the growing amount of polynitration thing is less than 0.01%.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the material charging aperture schematic cross-section of Fig. 1.
Among the figure: 1 reactor cylindrical shell, 2 central circulating tubes, 3 agitators, 4 tubular heat exchangers, 5 heat exchanger tubes, 6 material charging apertures, 7 material discharging openings, 8 interior pipes, 9 sleeve pipes, 10 cooling water inlets, 11 coolant outlets, 12 still top boards, 13 still base plates.
The specific embodiment
Shown in Fig. 1-2, still top board 12 and still base plate 13 are installed in the reactor cylindrical shell 1, central circulating tube 2 is installed between still top board 12 and still base plate 13 at the center of reactor cylindrical shell 1, around central circulating tube 2 tubular heat exchanger 4 is installed in the reactor, heat exchanger tube 5 is installed material charging aperture 7 and is positioned at central circulating tube 2 edges suitable for reading at the end opening of still base plate 13 connection central circulating tubes 2 on the reactor cylindrical shell 1.
In a kind of novel nitrator of the present utility model, material charging aperture 6 is the bushing type charging aperture, is made up of interior pipe 8 outer mounting sleeve 9 integral body.
In a kind of novel nitrator of the present utility model, agitator 3 is installed in the central circulating tube 2, agitator 3 is propeller agitator or turbine agitator; Propeller agitator is installed in the central circulation sleeve pipe 2, shaft dead in line central circulating tube axis; Turbine agitator is installed in the end opening of central circulating tube 2, shaft dead in line central circulating tube axis.
During work, nitrating agent is walked the interior pipe 8 of bushing type charging aperture, treated promptly that by itrated compound nitrated substance walks the annular space of sleeve pipe 9 and interior pipe 8, nitrating agent with entered central circulating tube 2 jointly by itrated compound, in the moment that enters central circulating tube, nitrating agent is reacted by surrounding by itrated compound, can't be further produces the polynitration thing with nitrated material haptoreaction; Simultaneously, propeller agitator flows downward material in the central circulating tube 2 when fully being mixed, and the tube side of last material process heat exchanger tube 5 upwards flows and realizes heat exchange, and nitration reaction heat is shifted out by the cooling water of heat exchanger shell pass.
Claims (3)
1. novel nitrator, it is characterized in that: still top board (12) and still base plate (13) are installed in the reactor cylindrical shell (1), at the center of reactor cylindrical shell (1) central circulating tube (2) being installed is positioned between still top board (12) and the still base plate (13), around central circulating tube (2) tubular heat exchanger (4) is installed in the reactor, heat exchanger tube (5) is at the end opening of still base plate (13) connection central circulating tube (2), and reactor cylindrical shell (1) is gone up installation material charging aperture (7) and is positioned at central circulating tube (2) edge suitable for reading.
2. a kind of novel nitrator according to claim 1 is characterized in that: material charging aperture (6) is the bushing type charging aperture, forms by the outer mounting sleeve of interior pipe (8) (9) is whole.
3. a kind of novel nitrator according to claim 1 is characterized in that: agitator (3) is installed in the central circulating tube (2), and agitator (3) is propeller agitator or turbine agitator; Propeller agitator is installed in the central circulation sleeve pipe (2), shaft dead in line central circulating tube axis; Turbine agitator is installed in the end opening of central circulating tube (2), shaft dead in line central circulating tube axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201050031U CN201239625Y (en) | 2008-04-03 | 2008-04-03 | Novel nitrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201050031U CN201239625Y (en) | 2008-04-03 | 2008-04-03 | Novel nitrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201239625Y true CN201239625Y (en) | 2009-05-20 |
Family
ID=40712914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201050031U Expired - Fee Related CN201239625Y (en) | 2008-04-03 | 2008-04-03 | Novel nitrator |
Country Status (1)
| Country | Link |
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| CN (1) | CN201239625Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102580654A (en) * | 2012-01-12 | 2012-07-18 | 浙江大学 | Reaction kettle suitable for intermittent mixed acid nitration |
| CN102641713A (en) * | 2012-04-18 | 2012-08-22 | 南京斯迈柯特种金属装备股份有限公司 | Straight pipe heat exchange type efficient polymerization reactor |
| CN103418318A (en) * | 2013-08-09 | 2013-12-04 | 江苏淮河化工有限公司 | Aromatic hydrocarbon continuous catalytic nitration reaction device |
-
2008
- 2008-04-03 CN CNU2008201050031U patent/CN201239625Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102580654A (en) * | 2012-01-12 | 2012-07-18 | 浙江大学 | Reaction kettle suitable for intermittent mixed acid nitration |
| CN102641713A (en) * | 2012-04-18 | 2012-08-22 | 南京斯迈柯特种金属装备股份有限公司 | Straight pipe heat exchange type efficient polymerization reactor |
| CN102641713B (en) * | 2012-04-18 | 2014-03-19 | 南京斯迈柯特种金属装备股份有限公司 | Straight pipe heat exchange type efficient polymerization reactor |
| CN103418318A (en) * | 2013-08-09 | 2013-12-04 | 江苏淮河化工有限公司 | Aromatic hydrocarbon continuous catalytic nitration reaction device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Huaian Jiacheng Hi-Tech Chemical Industry Co., Ltd. Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice |
Addressee: Huaian Jiacheng Hi-Tech Chemical Industry Co., Ltd. Document name: Notification of Termination of Patent Right |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090520 Termination date: 20160403 |