CN209423360U - It is a kind of for producing the mixer of four chloro- 2- cyanopyridines - Google Patents
It is a kind of for producing the mixer of four chloro- 2- cyanopyridines Download PDFInfo
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- CN209423360U CN209423360U CN201821857954.4U CN201821857954U CN209423360U CN 209423360 U CN209423360 U CN 209423360U CN 201821857954 U CN201821857954 U CN 201821857954U CN 209423360 U CN209423360 U CN 209423360U
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- mixer
- feed pipe
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- cyanopyridines
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Pyridine Compounds (AREA)
Abstract
The utility model discloses a kind of for producing the mixer of four chloro- 2- cyanopyridines, the mixer includes collet, cylinder, cyanopyridine feed pipe, packing section, chlorine feed pipe, its structure is that mixer tube top is welded with pressure container flange, with fluidized bed flanged joint；Chlorine feed pipeline is passed through internal mixer, uniformly distributed micropore and hangnail on tube wall in the lower part of mixer；2- cyanopyridine feed pipe is passed through internal mixer in the side wall of mixer, is evenly distributed with micropore using square pipe and air inlet face.The mixer can be widely used for high-temperature chlorination, and mixing velocity is fast and uniform, catalyst life is long, reaction yield is high, service using life is long.
Description
Technical field
The utility model belongs to fine chemistry industry equipment and technology application field, discloses one kind and is related to 3,4,5,6- 4 chloro pyridines
Mixer in cyanogen chlorination production device.
Background technique
3,4,5,6- tetrachloro cyanopyridines bioactivity with higher, can be used as pesticide, medicine and dyestuff
Synthetic intermediate.There is dosage with a series of pesticides especially herbicide of 3,4,5,6- tetra- chloro- 2- cyanopyridine exploitation synthesis
Less, the feature that selectivity is high, toxicity is low, residual quantity in soil and plant is small and residual life is short, to agricultural development and life
State protection has great importance.In recent years, continually developing with product downstream, application range and demand obtain quickly
Increase.
Primary raw material is 2- cyanopyridine in 3,4,5,6- tetra- chloro- 2- cyanopyridine production processes, and production technology is by 2
Gas phase catalysis chlorination reaction occurs in reactor and generates four chloro- 2- cyanopyridines (also known as 3,4,5,6- for cyanopyridine and chlorine
Four chloro- 2- cyanopyridines).Before carrying out chlorination reaction, raw material 2- cyanopyridine is vaporizated into gaseous state 2- cyanopyridine first, so
It is reacted afterwards with chlorine mixing post-reactor.
Existing product production procedure is to enter mixer by the 2- cyanopyridine that vaporizer vaporizes and mixed with chlorine
Fluidized-bed reactor is entered after conjunction and carries out chlorination reaction, and the gas flowed out from fluidized-bed reactor enters back into fixed bed reactors
Continue chlorination reaction, the gas come out from fixed bed reactors is cooling through trap, and separation obtains solid product four
Chloro- 2- cyanopyridine.Mixing step in existing product production procedure is directly ventilated mixing merely by a threeway, is had no
Specific mixer.There are such problems for this reaction process: former mixer causes since original mixer mixed effect is bad
Mixed raw material gas into fluidized bed is unevenly distributed, and is easy to happen side reaction；Generating high temperature polymer causes to urge in fluidized bed
Agent is easy to harden, to inactivate, not only increases production cost, but also product yield and quality be by serious influence,
It is unfavorable for producing steadily in the long term.
Utility model content
A kind of use that purpose of the utility model is to overcome the above-mentioned shortcomings and provide a kind of side reactions is few, product quality is high
In the mixer for producing four chloro- 2- cyanopyridines.
Purpose of the utility model is realized as follows:
It is a kind of for producing the mixer of four chloro- 2- cyanopyridines, including cylinder, further include the folder that cylinder periphery is set
It covers, pressure container flange is welded with above the cylinder, with fluidized bed flanged joint；Filler is equipped in the cylinder；It is described
Cyanopyridine feed pipe is equipped with above cylinder lateral wall, the cyanopyridine feed pipe protrudes into inner barrel and is located above filler,
The tube wall of the cyanopyridine feed pipe is equipped with micropore；The cylinder body bottom is equipped with chlorine feed pipe, the chlorine feed pipe
It protrudes into filler, and the chlorine feed pipe side wall is equipped with more hangnails, the chlorine feed pipe, tube wall is equipped with micropore.
Preferred embodiment, the cylinder are prepared by Hastelloy material.
Preferred embodiment, the filler are the ceramic packing of corrosion-and high-temp-resistant.
Preferred embodiment, the filler are selected from DN16 ceramic saddle/rings filler, Raschig ring filler, Pall ring filler, cascade ring
One or more of filler.
Preferred embodiment, the cyanopyridine feed pipe be it is rectangular, the bottom sidewall of rectangular tube is uniformly provided with micropore.
Preferred embodiment, the angle between hangnail and chlorine feed tube wall on the chlorine feed pipe is 40 degree -70
Degree.
Preferred embodiment, the hangnail on the chlorine feed pipe are 4.
Preferred embodiment, the micropore size on the cyanopyridine feed pipe and chlorine feed pipe are 1~10mm.
The utility model relates to hybrid instrument have the advantage that and the utility model has the advantages that
1, uniformly distributed micropore on mixer charging tube wall, when chlorination reaction process unstrpped gas is passed through, 2- cyanopyridine
Steam can be mixed uniformly rapidly with chlorine, it is ensured that raw material can sufficiently react, and improve the yield of reaction.
2, raw material uniformly mixes, and reduces the generation of side reaction, effectively extends the service life of reacting section catalyst.
3, the mixer is equipped with hangnail at micropore, and it is blocking microporous to be effectively prevented filler, not only can guarantee mixing rate, but also
It can be reduced repair rate.
4, this mixer is preferably steel Hastelloy container, and use is safe, can be widely used in high-temperature chlorination.
Detailed description of the invention
Attached drawing 1 be it is provided by the utility model a kind of for producing the structure chart of the mixer of four chloro- 2- cyanopyridines, it is attached
Fig. 2 is chlorine feed pipe structural schematic diagram；
Attached drawing 3 is the top view of Fig. 2；
Attached drawing 4 is yl pyridines feed pipe structure schematic diagram.
Wherein 1 is collet, and 2 be cylinder, and 3 be chlorine feed pipe, and 4 be filler, and 5 be cyanopyridine feed pipe, and 6 be hangnail,
7 be the first micropore, and 8 be the second micropore, and a1 is shell flange, and a2 is pressure container flange, a2 and fluidized bed flanged joint, b1
For collet suction flange, b2 is jacket outlet flange.
Specific embodiment
The utility model is described in further detail below in conjunction with figure embodiment.
Embodiment 1
As shown in Figure 1, the utility model creates the mixer being related in 3,4,5,6- 4 chloro pyridine cyanogen chlorination production devices,
It includes collet 1, cylinder 2, cyanopyridine feed pipe 5, chlorine feed pipe 3, filler 4.
Cylinder 2 is provided with DN16 ceramic saddle/rings filler.Welding pressure container flange a2 above cylinder, with fluidized bed flange
Connection.
Cyanopyridine feed pipe 5 is square pipe, uniformly distributed second micropore 8 on tube wall, aperture 6mm.
The chlorine feed pipe 3, uniformly distributed first micropore 7, aperture 3mm, every lap welding connect 4 hangnails 6, hangnail on tube wall
6 with chlorine feed pipe 3 at 60 degree of angles.
The application case 1 of mixer described in embodiment 1:
Control chlorine flowrate 35m3/ h, 2- cyanopyridine flow are 25L/h, nitrogen flow 25m3/ h, it is novel by reequiping
After a series of equipment chlorination reactions such as mixer, 3,4,5,6- tetra- chloro- 2- cyanopyridine contents reach 99.0% or more, yield
Reach 93% or more, fixed bed catalyst service life reaches 30 days.
Compare application examples:
Control chlorine flowrate 35m3/ h, 2- cyanopyridine flow are 25L/h, nitrogen flow 25m3/ h, by original threeway
After a series of equipment chlorination reactions such as mixer, 3,4,5,6- tetra- chloro- 2- cyanopyridine contents reach 98.0% or more, yield
Reach 88% or more, fixed bed catalyst service life reaches 10~15 days.
It can be seen that significantly improving 3,4,5,6- tetra- chloro- 2- cyanopyridine contents and receipts using the mixer of the utility model
Rate, and fixed bed catalyst service life is enhanced about more than once.
Above-described embodiment is only intended to clearly illustrate description made by the utility model, and not to the limit of embodiment
It is fixed, to those of ordinary skill in the art, other various forms of variations can also be made on the basis of the above description
Or change, there is no necessity and possibility to exhaust all the enbodiments, and the obvious variation thus amplified out
Or it changes among still in the protection scope of the utility model.
Claims (8)
1. a kind of for producing the mixer of four chloro- 2- cyanopyridines, including cylinder (2), characterized in that further include being arranged in cylinder
The collet (1) of body (2) periphery is welded with pressure container flange (a2) above the cylinder (2), with fluidized bed flanged joint；
Filler (4) are equipped in the cylinder (2)；Cyanopyridine feed pipe (5) are equipped with above cylinder (2) side wall, the cyano pyrrole
Pyridine feed pipe (5) protrudes into cylinder (2) inside and is located above filler (4), and the tube wall of the cyanopyridine feed pipe (5) is equipped with
Micropore；Cylinder (2) bottom is equipped with chlorine feed pipe (3), and the chlorine feed pipe (3) is protruded into filler (4), and the chlorine
Gas feed pipe (3) side wall is equipped with more hangnails (6), the chlorine feed pipe (3), and tube wall is equipped with micropore.
2. according to claim 1 for producing the mixers of four chloro- 2- cyanopyridines, characterized in that the cylinder (2) by
Hastelloy material is prepared.
3. according to claim 1 for producing the mixers of four chloro- 2- cyanopyridines, characterized in that the filler (4) is
The ceramic packing of corrosion-and high-temp-resistant.
4. according to claim 3 for producing the mixer of four chloro- 2- cyanopyridines, characterized in that filler (4) choosing
From one or more of DN16 ceramic saddle/rings filler, Raschig ring filler, Pall ring filler, ladder ring packing.
5. according to claim 1 for producing the mixer of four chloro- 2- cyanopyridines, characterized in that the cyanopyridine
Feed pipe (5) be it is rectangular, the bottom sidewall of rectangular tube is uniformly provided with micropore.
6. according to claim 1 for producing the mixer of four chloro- 2- cyanopyridines, characterized in that the chlorine feed
The angle between hangnail and chlorine feed tube wall on pipe (3) is 40 degree of -70 degree.
7. according to claim 1 for producing the mixer of four chloro- 2- cyanopyridines, characterized in that the chlorine feed
Managing the hangnail on (3) is 4.
8. according to claim 1 for producing the mixer of four chloro- 2- cyanopyridines, characterized in that the cyanopyridine
Micropore size on feed pipe (5) and chlorine feed pipe (3) is 1 ~ 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821857954.4U CN209423360U (en) | 2018-11-13 | 2018-11-13 | It is a kind of for producing the mixer of four chloro- 2- cyanopyridines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821857954.4U CN209423360U (en) | 2018-11-13 | 2018-11-13 | It is a kind of for producing the mixer of four chloro- 2- cyanopyridines |
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| Publication Number | Publication Date |
|---|---|
| CN209423360U true CN209423360U (en) | 2019-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821857954.4U Active CN209423360U (en) | 2018-11-13 | 2018-11-13 | It is a kind of for producing the mixer of four chloro- 2- cyanopyridines |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109092091A (en) * | 2018-11-13 | 2018-12-28 | 湖南比德生化科技股份有限公司 | It is a kind of for producing the mixer of the chloro- 2- cyanopyridine of 3,4,5,6- tetra- |
-
2018
- 2018-11-13 CN CN201821857954.4U patent/CN209423360U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109092091A (en) * | 2018-11-13 | 2018-12-28 | 湖南比德生化科技股份有限公司 | It is a kind of for producing the mixer of the chloro- 2- cyanopyridine of 3,4,5,6- tetra- |
| CN109092091B (en) * | 2018-11-13 | 2024-03-08 | 湖南比德生化科技股份有限公司 | Mixer for producing 3,4,5, 6-tetrachloro-2-cyanopyridine |
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