CN209109181U - Diazinon cyclization reaction device - Google Patents
Diazinon cyclization reaction device Download PDFInfo
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- CN209109181U CN209109181U CN201821419447.2U CN201821419447U CN209109181U CN 209109181 U CN209109181 U CN 209109181U CN 201821419447 U CN201821419447 U CN 201821419447U CN 209109181 U CN209109181 U CN 209109181U
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- tubular reactor
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- static mixer
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Abstract
The utility model provides a kind of diazinon cyclization reaction device, has and is sequentially connected in series static mixer, level-one tubular reactor, second level tubular reactor, post-reactor together according to reaction process；There is liquid alkaline valve between the outlet and level-one tubular reactor entrance of static mixer, be connected with pH meter, the folding of pH meter energy chain control liquid alkaline valve on static mixer.The utility model reduces the leakage loss of raw material, intermediate product, finished product, pH value chain control, and can promote live the degree of automation.
Description
Technical field
The utility model relates to a kind of insecticide synthesis devices.
Background technique
The synthesis hair that chemical field uses answers device to have a kind of tubular reactor, be it is a kind of in a tubular form, very big anti-of draw ratio
Device is answered, it is suitable for the reaction of gas and liquid, liquid and liquid.Tubular reactor divides horizontal tube reactor, vertical tube type back
Answer device, coil pipe type reactor and multi-tubular reactor.
Horizontal tube reactor: a kind of similar one way double-tube heat exchanger, one kind be structure connect with U-tube by seamless pipe and
At, similar multi-way sleeve heat exchange, such reactor is to carry out gas phase or liquid phase homogeneous reaction a kind of commonly tubular reactor,
This structure is easy to manufacture and overhauls.
Riser reactor: one kind is one-pass type riser reactor, and one kind is jacket type riser reactor, feature
It is to be mounted on a branch of standpipe in one heating muff, to save ground.Riser reactor be applied to liquid phase aminating reaction,
In the techniques such as liquid-phase hydrogenatin reaction and liquid phase oxidation reaction.
Coil pipe type reactor: being the form that tubular reactor is made into coil pipe, facility compact, saves space, but overhaul and
It is more troublesome to clean pipeline with water.
Multi-tubular reactor: heat transfer area is larger, is applicable to the biggish homogeneous reaction process of fuel factor.Multitube reaction
Also fillable solid particle in the reaction tube of device, to improve liquid flowing or promote the good contact of heterogeneous fluid, and can be used
So that temperature of reactor is preferably controlled to store heat, is also applicable to gas-solid, liquid-solid heterogeneous catalytic reaction process.
Summary of the invention
The utility model aim: provide that a kind of equipment investment is small, occupation area of equipment is small, is able to carry out continuous reaction
Diazinon cyclization reaction technique and its device.
Technical solution: the reactor that the utility model is selected is tandem tubular reactor, according to reaction process, have according to
The secondary static mixer being serially connected, level-one tubular reactor, second level tubular reactor, post-reactor.
Static mixer has methyl propylamine acid imide methanol solution entrance, methyl acetoacetate entrance, methanol shop fixtures liquid
Entrance.It is connected with pH meter on static mixer, there is liquid alkaline valve, liquid alkaline valve between static mixer and level-one tubular reactor
Door can supplement lye, the folding of pH meter energy chain control liquid alkaline valve, i.e., according to static mixing into level-one tubular reactor
The pH value of reaction solution adjusts the quantity that liquid alkaline valve enters lye in device, guarantees the pH of mixed entered in level-one tubular reactor
Value reaches design requirement.
Methanol concentration is 51% in level-one tubular reactor, and methanol makees reaction dissolvent in first-stage reactor；Second level pipe reaction
Because there is methanol generation in device, so that its concentration reaches 55%.
PH value is the key that cyclization yield height, index request 11.8 ~ 12.2, therefore is needed in reactor from level-one to second level
Control wants different 11.8 ~ 12.2, and level-one pH value index is 11.8 ~ 12.0, and second level pH value index is 12.0 ~ 12.2.With
Methanol is corresponding, so that the molar ratio of reaction raw materials can match in reactor.
Moreover, showing that reacting liquid temperature has higher yields in 45 DEG C of cyclizations by test, first-stage reactor temperature index is
41 ~ 43 DEG C, second reactor temperature index is 44 ~ 46 DEG C, and cyclization yield is promoted to improve.
The caliber of second level tubular reactor is greater than level-one tubular reactor and guarantees the reaction time therein using low flow velocity
Greater than in first-stage reactor, and in the case where fully ensuring that the reaction time pressure dropped to lower.
To achieve the above object, the technical solution of the utility model is as follows:
(1) by methanol shop fixtures static mixer, tubular reactor.
(2) (referred to as: the NSC 18620) methanol solution and methyl acetoacetate of content 15% are pressed in static mixer certain
Ratio be added, the chain liquid alkaline valve strict control system pH of pH meter, the mixed system into tubular reactor still passes through pH
Count chain monitoring.
(3) the cyclization reaction time is 2h, and using low flow velocity, the type of reactor of Large Diameter Pipeline is fully ensuring that the reaction time
In the case where pressure is preferably minimized.
(4) cyclization yield reaches 20 tons or so daily, takes up an area 20 squares.
The utility model has the advantages that
Continuous reaction can be achieved after above equipment use, avoid the shortcomings that still reaction is unable to successive reaction, improve
Work efficiency is high, reduces the leakage loss of raw material, intermediate product, finished product, pH value chain control, and can promote live automation
Degree.
Detailed description of the invention
Fig. 1 is a kind of the schematic diagram of the section structure of device of the utility model；
In figure, 1- static mixer, 2- level-one tubular reactor, 3- second level tubular reactor, 4- post-reactor, 5-pH
Meter, 6- liquid alkaline regulating valve.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below.
Device as shown in Figure 1 has static mixer, the level-one tubular reactor, diode being sequentially connected in series together
Formula reactor, post-reactor.
Static mixer 1 has methyl propylamine acid imide methanol solution entrance, methyl acetoacetate entrance, methanol shop fixtures liquid
Entrance.It is connected with pH meter 5 on static mixer 1, there is liquid alkaline valve 6 between static mixer 1 and level-one tubular reactor 2,
Liquid alkaline valve 6 can supplement lye, the folding of 5 energy chain control liquid alkaline valve 6 of pH meter, i.e. root into level-one tubular reactor 2
The quantity that liquid alkaline valve 6 enters lye is adjusted according to the pH value of reaction solution in static mixer 1, guarantees to enter level-one tubular reactor
Mixed liquor pH value in 2 reaches design requirement.
The utility model proposes this diazinon cyclization process serialization technologies, realize production continuous operation, reaction
Device has the advantages such as less investment, occupied area be small, and has the characteristics that easy processing manufacture and overhaul.
Claims (4)
1. a kind of diazinon cyclization reaction device, it is characterised in that: have and be sequentially connected in series static state together according to reaction process
Mixer, level-one tubular reactor, second level tubular reactor, post-reactor；
Static mixer has methyl propylamine acid imide methanol solution entrance, methyl acetoacetate entrance, methanol shop fixtures liquid entrance；
There is liquid alkaline valve, liquid alkaline valve can be anti-to level-one tubular type between the outlet and level-one tubular reactor entrance of static mixer
It answers and supplements lye in device.
2. diazinon cyclization reaction device as described in claim 1, it is characterised in that: pH meter is connected on static mixer,
The folding of pH meter energy chain control liquid alkaline valve.
3. diazinon cyclization reaction device as described in claim 1, it is characterised in that: have level-one on level-one tubular reactor
Methanol inlet and lye supplement entrance, the entrance of the product exit connection second level tubular reactor of level-one tubular reactor.
4. diazinon cyclization reaction device as described in claim 1, it is characterised in that: the product exit of second level tubular reactor
Connection post-reactor, post-reactor have methanol outlet, the methanol shop fixtures liquid entrance of methanol outlet connection static mixer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821419447.2U CN209109181U (en) | 2018-08-31 | 2018-08-31 | Diazinon cyclization reaction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821419447.2U CN209109181U (en) | 2018-08-31 | 2018-08-31 | Diazinon cyclization reaction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209109181U true CN209109181U (en) | 2019-07-16 |
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ID=67197783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821419447.2U Active CN209109181U (en) | 2018-08-31 | 2018-08-31 | Diazinon cyclization reaction device |
Country Status (1)
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| CN (1) | CN209109181U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108997423A (en) * | 2018-08-31 | 2018-12-14 | 南通江山农药化工股份有限公司 | Diazinon cyclization reaction technique and its device |
-
2018
- 2018-08-31 CN CN201821419447.2U patent/CN209109181U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108997423A (en) * | 2018-08-31 | 2018-12-14 | 南通江山农药化工股份有限公司 | Diazinon cyclization reaction technique and its device |
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