CN206337194U - A kind of reaction unit in polymethoxy dimethyl ether production - Google Patents
A kind of reaction unit in polymethoxy dimethyl ether production Download PDFInfo
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- CN206337194U CN206337194U CN201621420693.0U CN201621420693U CN206337194U CN 206337194 U CN206337194 U CN 206337194U CN 201621420693 U CN201621420693 U CN 201621420693U CN 206337194 U CN206337194 U CN 206337194U
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Abstract
The utility model is related to the reaction unit in a kind of polymethoxy dimethyl ether production, including oxidation unit, reactive distillation column, polyplant, reactor, circulating pump, discharging dashpot, collecting tank and collecting tank outlet, oxidation unit is connected with reactive distillation column and polyplant, the entrance connection of reactive distillation column and polyplant and reactor, the outlet of reactor is connected with collecting tank, pot bottom is collected to export provided with collecting tank, reactor is connected by reflux inlet with discharging dashpot, discharging dashpot is connected with circulating pump, the entrance connection of circulating pump and reactor.The beneficial effects of the utility model：Production cost is reduced, separating difficulty is reduced；Improve the utilization rate and economy of raw material；The cool time of reaction product is reduced, the production capacity of reactor is improved, improves yield.
Description
Technical field
The utility model is related to the reaction unit in a kind of polymethoxy dimethyl ether production.
Background technology
Polymethoxy dimethyl ether is a kind of polyoxy ether compound, with higher oxygen content and Cetane number, is used as bavin
Oily blend component can improve the combustibility of existing derv fuel, have significantly advantage to reduction exhaust emissions.In addition, poly- first
Epoxide dimethyl ether also resides in it without the engine apparatus and fuel system that more renew as the advantage of automobile-used oil dope.
Therefore, polymethoxy dimethyl ether has great importance to economic development and environmental protection.Especially present haze is increasingly serious
In the case of, production clean diesel fuel additive is current more urgent demand.
It is existing using methanol and metaformaldehyde as the process units of raw material, with following shortcoming：(1) formaldehyde is to trimerization
The cost of formaldehyde is higher, and the price of upper episome is also high；(2) methanol and metaformaldehyde reaction generation water, cause to occur partly to contract
Aldehyde accessory substance, adds the difficulty of separation；(3) reacted product needs cooling for a long time in a kettle., causes reaction
The yield very little of kettle；(4) reaction solution not reacted completely in reactor does not make full use of, and reduces the utilization rate of raw material.
Utility model content
Weak point present in regarding to the issue above, the utility model is provided in a kind of polymethoxy dimethyl ether production
Reaction unit, reduces cost, improves raw material availability, increases yield.
To achieve the above object, the utility model provides the reaction unit in a kind of polymethoxy dimethyl ether production, including
Oxidation unit, reactive distillation column, polyplant, reactor, circulating pump, discharging dashpot, collecting tank and collecting tank outlet, it is described
Oxidation unit is connected with the reactive distillation column and the polyplant, the reactive distillation column and the polyplant with it is described
The entrance connection of reactor, the outlet of the reactor is connected with the collecting tank, and the collection pot bottom goes out provided with collecting tank
Mouthful, the reactor is connected by reflux inlet with the discharging dashpot, and the discharging dashpot is connected with the circulating pump,
The circulating pump is connected with the entrance of the reactor；
Methanol obtains formaldehyde into the oxidation unit rear oxidation, and the methanol and the formaldehyde enter the reactive distillation
Tower carries out obtaining dimethoxym ethane after rectifying and dehydration, and the formaldehyde obtains paraformaldehyde after entering polyplant polymerization,
The dimethoxym ethane and the paraformaldehyde enter the feeding mouth of the reactor, and poly- first is obtained after being reacted in the presence of catalyst
Reaction solution in epoxide dimethyl ether, the reactor flows back into the discharging dashpot after being come out from the reactor, and
Reaction solution is squeezed into the reactor in the presence of the circulating pump, the collecting tank is received to polymethoxy dimethyl ether
Collection, and export output from the collecting tank.
Further improved as the utility model, cooling device is provided with the collecting tank.
Further improved as the utility model, the cooling device is coil pipe cooling device.
Further improved as the utility model, resin catalyst is provided with the reactor.
The beneficial effects of the utility model are：
1st, the use of dimethoxym ethane and paraformaldehyde is raw material, polymethoxy dimethyl ether is synthesized using resin catalyst, reduced
Production cost, reduces separating difficulty；
2nd, the reaction solution in reactor is squeezed into reactor by circulating pump and recycled, improve the utilization rate of raw material
And economy；
3rd, by setting cooling device in collecting tank, the cool time of reaction product is reduced, reactor is improved
Production capacity, improves yield.
Brief description of the drawings
Fig. 1 is the structural representation of the reaction unit in a kind of polymethoxy dimethyl ether production of the utility model.
In figure：
1st, methanol；2nd, formaldehyde；3rd, dimethoxym ethane；4th, paraformaldehyde；5th, oxidation unit；6th, reactive distillation column；7th, polyplant；
8th, reactor；9th, circulating pump；10th, discharge dashpot；11st, collecting tank；12nd, coil pipe cooling device；13rd, collecting tank is exported.
Embodiment
As shown in figure 1, the reaction unit in a kind of polymethoxy dimethyl ether production of the utility model embodiment, including oxygen
Makeup is put 5, reactive distillation column 6, polyplant 7, reactor 8, circulating pump 9, discharging dashpot 10, collecting tank 11 and collecting tank and gone out
Mouth 13, oxidation unit 5 is connected with reactive distillation column 6 and polyplant 7, reactive distillation column 6 and polyplant 7 and reactor 8
Entrance is connected, and the outlet of reactor 8 is connected with collecting tank 11, and the bottom of collecting tank 11 is provided with collecting tank outlet 13, and reactor 8 passes through
Reflux inlet is connected with discharging dashpot 10, and discharging dashpot 10 is connected with circulating pump 9, and the entrance of circulating pump 9 and reactor 8 connects
Connect.Wherein, resin catalyst is provided with reactor 8.
Methanol 1 obtains formaldehyde 2 into the rear oxidation of oxidation unit 5, and methanol 1 and formaldehyde 2 enter reactive distillation column 6 and carries out rectifying
With obtain dimethoxym ethane 3 after dehydration, formaldehyde 2, which enters after polyplant 7 polymerize, obtains paraformaldehyde 4, dimethoxym ethane 3 and poly first
Aldehyde 4 enters the feeding mouth of reactor 8, obtains anti-in polymethoxy dimethyl ether, reactor 8 after being reacted in the presence of catalyst
Answer liquid to flow back into discharging dashpot 10 after being come out from reactor 8, and reaction solution is squeezed into reactor in the presence of circulating pump 9
In 8, collecting tank 11 is collected to polymethoxy dimethyl ether, and exports 13 outputs from collecting tank.
Further, in order to reduce cool time of collecting pipe reaction product, dress is cooled down provided with coil pipe in collecting tank 11
Put 12.
It is raw material that reaction unit in polymethoxy dimethyl ether production of the present utility model, which uses dimethoxym ethane and paraformaldehyde,
Polymethoxy dimethyl ether is synthesized using resin catalyst, production cost is reduced, reduces separating difficulty；Will be anti-by circulating pump
Answer the reaction solution in kettle to squeeze into reactor to recycle, improve the utilization rate and economy of raw material；By in collecting tank
Cooling device is set, the cool time of reaction product is reduced, improves the production capacity of reactor, improve yield.
Preferred embodiment of the present utility model is the foregoing is only, the utility model is not limited to, for this
For the technical staff in field, the utility model can have various modifications and variations.It is all it is of the present utility model spirit and principle
Within, any modifications, equivalent substitutions and improvements made etc. should be included within protection domain of the present utility model.
Claims (4)
1. the reaction unit in a kind of polymethoxy dimethyl ether production, it is characterised in that including oxidation unit (5), reactive distillation
Tower (6), polyplant (7), reactor (8), circulating pump (9), discharging dashpot (10), collecting tank (11) and collecting tank outlet
(13), the oxidation unit (5) is connected with the reactive distillation column (6) and the polyplant (7), the reactive distillation column
(6) it is connected with the polyplant (7) with the entrance of the reactor (8), outlet and the collecting tank of the reactor (8)
(11) connect, collecting tank (11) bottom provided with collecting tank outlet (13), the reactor (8) by reflux inlet with it is described
Discharge dashpot (10) connection, it is described discharging dashpot (10) be connected with the circulating pump (9), the circulating pump (9) with it is described
The entrance connection of reactor (8)；
Methanol (1) obtains formaldehyde (2) into the oxidation unit (5) rear oxidation, and the methanol (1) and the formaldehyde (2) enter
The reactive distillation column (6) carries out obtaining dimethoxym ethane (3) after rectifying and dehydration, and the formaldehyde (2) enters the polymerization dress
Put and paraformaldehyde (4) is obtained after (7) polymerization, the dimethoxym ethane (3) and the paraformaldehyde (4) enter the reactor (8)
Feeding mouth, obtains reaction solution in polymethoxy dimethyl ether, the reactor (8) from described after reacting in the presence of the catalyst
Reactor (8) flows back into the discharging dashpot (10) after coming out, and beats reaction solution in the presence of the circulating pump (9)
Enter in the reactor (8), the collecting tank (11) is collected to polymethoxy dimethyl ether, and exported from the collecting tank
(13) output.
2. reaction unit according to claim 1, it is characterised in that cooling device is provided with the collecting tank (11).
3. reaction unit according to claim 2, it is characterised in that the cooling device coil pipe cooling device (12).
4. reaction unit according to claim 1, it is characterised in that resin catalyst is provided with the reactor (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621420693.0U CN206337194U (en) | 2016-12-22 | 2016-12-22 | A kind of reaction unit in polymethoxy dimethyl ether production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621420693.0U CN206337194U (en) | 2016-12-22 | 2016-12-22 | A kind of reaction unit in polymethoxy dimethyl ether production |
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| CN206337194U true CN206337194U (en) | 2017-07-18 |
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| CN201621420693.0U Active CN206337194U (en) | 2016-12-22 | 2016-12-22 | A kind of reaction unit in polymethoxy dimethyl ether production |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110078599A (en) * | 2019-04-17 | 2019-08-02 | 天津大学 | Methanol synthesizes the reactive distillation process method and device of DMMn with high-concentration formaldehyde |
| CN110078600A (en) * | 2019-04-17 | 2019-08-02 | 天津大学 | A kind of reactive distillation process device and method for polymethoxy dimethyl ether synthesis |
-
2016
- 2016-12-22 CN CN201621420693.0U patent/CN206337194U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110078599A (en) * | 2019-04-17 | 2019-08-02 | 天津大学 | Methanol synthesizes the reactive distillation process method and device of DMMn with high-concentration formaldehyde |
| CN110078600A (en) * | 2019-04-17 | 2019-08-02 | 天津大学 | A kind of reactive distillation process device and method for polymethoxy dimethyl ether synthesis |
| CN110078600B (en) * | 2019-04-17 | 2023-06-20 | 天津大学 | Reactive distillation process device and method for synthesizing polymethoxy dimethyl ether |
| CN110078599B (en) * | 2019-04-17 | 2023-06-20 | 天津大学 | Reactive distillation process method and device for synthesizing DMMn (dimethyl formamide) from methanol and high-concentration formaldehyde |
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