CN206337198U - A kind of process units for producing polymethoxy dimethyl ether - Google Patents
A kind of process units for producing polymethoxy dimethyl ether Download PDFInfo
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- CN206337198U CN206337198U CN201621420715.3U CN201621420715U CN206337198U CN 206337198 U CN206337198 U CN 206337198U CN 201621420715 U CN201621420715 U CN 201621420715U CN 206337198 U CN206337198 U CN 206337198U
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Abstract
The utility model is related to a kind of process units for producing polymethoxy dimethyl ether, methanol obtains formaldehyde after entering oxidation unit, methanol and formaldehyde obtain dimethoxym ethane after entering reactive distillation column, formaldehyde obtains formaldehyde gas after entering acetal decomposition device, dimethoxym ethane and formaldehyde gas obtain polymethoxy dimethyl ether after entering reactor reaction, by flash distillation plant, extraction equipment, it is de- it is with light packs put and take off refitting postpone into different component, it is de- it is with light packs put in light component DMM2Reactor flowed back into by refluxing opening be used as feedstock circulation and utilize, de- refitting put in heavy constituent DMM6‑8Reactor is flowed back into by refluxing opening it is used as feedstock circulation and utilize, will flow back into reactor by refluxing opening after lower boiling product withdraw after flash distillation plant evaporation utilizes as feedstock circulation, de- to reset the component DMM put3‑5It is used as final product.The beneficial effects of the utility model：The problem of solving paraformaldehyde limited solubility, improves the utilization rate of raw material.
Description
Technical field
The utility model is related to a kind of process units for producing polymethoxy dimethyl ether.
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.
Existing process units is more to cause cost higher using methanol and metaformaldehyde as raw material, meanwhile, methanol and metaformaldehyde
Reaction generation water, causes hemiacetal accessory substance occur, adds the difficulty of separation, cause the utilization rate of raw material low.Also there is part
Process units uses dimethoxym ethane and paraformaldehyde for raw material, but relatively complicated the step of prepare paraformaldehyde, and paraformaldehyde
Limited solubility.
Utility model content
Weak point present in regarding to the issue above, the utility model provides a kind of life for producing polymethoxy dimethyl ether
Device is produced, the step of formaldehyde prepares paraformaldehyde is saved, the problem of solving paraformaldehyde limited solubility.
To achieve the above object, the utility model provides a kind of process units for producing polymethoxy dimethyl ether, including oxygen
Makeup is put, reactive distillation column, acetal decomposition device, reactor, flash distillation plant, extraction equipment, it is de- it is with light packs put and take off refitting put, institute
State oxidation unit to be connected with the reactive distillation column and the acetal decomposition device, the reactive distillation column and the acetal decomposition
Device is connected with the reactor, and the reactor is connected with the flash distillation plant, the flash distillation plant and the extraction equipment
Connection, the extraction equipment takes off with light packs put and be connected with described, described to take off with light packs put and put and be connected with de- reset；
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 enters the acetal decomposition device by aldolisation and divided
Formaldehyde gas is obtained after solution, the dimethoxym ethane and the formaldehyde gas enter the entrance of the reactor, in the effect of catalyst
Polymethoxy dimethyl ether is obtained after lower reaction, by the flash distillation plant, the extraction equipment, described de- with light packs is put and described de-
Unit flashing, extraction, rectifying are weighed into different component, wherein, the light component DMM taken off in light packs put2Flowed back by refluxing opening
Utilized into the reactor as feedstock circulation, the de- heavy constituent DMM reset in putting6-8Flowed back into by refluxing opening
The reactor is utilized as feedstock circulation, will be returned after the flash distillation plant evaporation after lower boiling product withdraw by refluxing opening
Stream is utilized into the reactor as feedstock circulation, the component DMM that the de- refitting is put3-5It is used as final product.
Further improved as the utility model, resin catalyst is provided with the reactor.
Further improved as the utility model, the resin catalyst is acid resin catalyst.
The beneficial effects of the utility model are：
Using methanol as raw material, dimethoxym ethane and formaldehyde gas are prepared, the step of formaldehyde prepares paraformaldehyde is saved,
Production cost is reduced, the problem of solving paraformaldehyde limited solubility；Dimethoxym ethane and formaldehyde gas are in resin catalyst
Polymerization generates polymethoxy dimethyl ether down for effect, reduces separating difficulty, and the product reflux entrance of light component and heavy constituent is anti-
Answer device to be reused as raw material, improve the utilization rate of raw material.
Brief description of the drawings
Fig. 1 is a kind of structural representation for the process units for producing polymethoxy dimethyl ether of the utility model.
In figure：
1st, methanol；2nd, formaldehyde；3rd, dimethoxym ethane；4th, formaldehyde gas；5th, oxidation unit；6th, reactive distillation column；7th, acetal decomposition
Device；8th, reactor；9th, flash distillation plant；10th, extraction equipment；11st, with light packs put is taken off；12nd, refitting is taken off to put；13rd, component DMM3-5。
Embodiment
As shown in figure 1, a kind of process units for producing polymethoxy dimethyl ether of the utility model embodiment, including oxidation
Device 5, reactive distillation column 6, acetal decomposition device 7, reactor 8, flash distillation plant 9, extraction equipment 10, de- with light packs put 11 and de- weight
Device 12, oxidation unit 5 is connected with reactive distillation column 6 and acetal decomposition device 7, reactive distillation column 6 and acetal decomposition device 7 with
Reactor 8 is connected, and reactor 8 is connected with flash distillation plant 9, and flash distillation plant 9 is connected with extraction equipment 10, and extraction equipment 10 is light with taking off
Device 11 is connected, it is de- it is with light packs put 11 and put 12 with de- refitting be connected.
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 enters acetal decomposition device 7 and formaldehyde gas is obtained after aldolisation and decomposition
Body 4, dimethoxym ethane 3 and formaldehyde gas 4 enter the entrance of reactor 8, and polymethoxy two is obtained after being reacted in the presence of catalyst
Methyl ether, by flash distillation plant 9, extraction equipment 10, it is de- it is with light packs put 11 with de- refitting and put 12 flash distillations, extraction, rectifying into different component,
Wherein, the with light packs light component DMM put in 11 is taken off2Reactor 8 is flowed back into by refluxing opening it is used as feedstock circulation and utilize, takes off refitting
Put the heavy constituent DMM in 126-8Reactor 8 is flowed back into by refluxing opening it is used as feedstock circulation and utilize, after flash distillation plant 9 evaporates
Utilized reactor 8 is flowed back into by refluxing opening after lower boiling product withdraw as feedstock circulation, 12 group is put in de- refitting
Divide DMM3-513 are used as final product.
Wherein, resin catalyst is provided with reactor 8, the resin catalyst is preferably acid resin catalyst.
The process units of production polymethoxy dimethyl ether of the present utility model, as raw material, prepares first contracting using methanol
Aldehyde and formaldehyde gas, save the step of formaldehyde prepares paraformaldehyde, reduce production cost, solve paraformaldehyde solubility by
The problem of limit；Dimethoxym ethane and formaldehyde gas polymerize in the presence of resin catalyst generates polymethoxy dimethyl ether, reduces
The product reflux of separating difficulty, light component and heavy constituent is reused into reactor as raw material, improves the utilization of raw material
Rate.
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 (3)
1. a kind of process units for producing polymethoxy dimethyl ether, it is characterised in that including oxidation unit (5), reactive distillation column
(6), acetal decomposition device (7), reactor (8), flash distillation plant (9), extraction equipment (10), de- with light packs put (11) and de- refitting is put
(12), the oxidation unit (5) is connected with the reactive distillation column (6) and the acetal decomposition device (7), the reactive distillation
Tower (6) and the acetal decomposition device (7) are connected with the reactor (8), the reactor (8) and the flash distillation plant (9)
Connection, the flash distillation plant (9) is connected with the extraction equipment (10), and the extraction equipment (10) takes off with light packs put (11) with described
Put (12) with de- reset and be connected in connection, de- with light packs put (11)；
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 acetal point
Solution device (7) obtains formaldehyde gas (4) after aldolisation and decomposition, and the dimethoxym ethane (3) and the formaldehyde gas (4) enter
Enter the entrance of the reactor (8), polymethoxy dimethyl ether is obtained after being reacted in the presence of catalyst, filled by the flash distillation
Put (9), the extraction equipment (10), it is described it is de- it is with light packs put (11) and the de- refitting put (12) flash distillation, extract, rectifying is into difference
Component, wherein, it is described to take off the with light packs light component DMM put in (11)2The reactor (8) is flowed back into by refluxing opening and is used as original
Material is recycled, and the heavy constituent DMM in (12) is put in the de- refitting6-8The reactor (8) is flowed back into by refluxing opening to be used as
Feedstock circulation is utilized, and will be flowed back into after flash distillation plant (9) evaporation after lower boiling product withdraw by refluxing opening described
Reactor (8) is utilized as feedstock circulation, and the component DMM of (12) is put in the de- refitting3-5(13) as final product.
2. device according to claim 1, it is characterised in that resin catalyst is provided with the reactor (8).
3. device according to claim 2, it is characterised in that the resin catalyst is acid resin catalyst.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621420715.3U CN206337198U (en) | 2016-12-22 | 2016-12-22 | A kind of process units for producing polymethoxy dimethyl ether |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621420715.3U CN206337198U (en) | 2016-12-22 | 2016-12-22 | A kind of process units for producing polymethoxy dimethyl ether |
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| CN206337198U true CN206337198U (en) | 2017-07-18 |
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| CN201621420715.3U Active CN206337198U (en) | 2016-12-22 | 2016-12-22 | A kind of process units for producing polymethoxy dimethyl ether |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108484371A (en) * | 2018-04-27 | 2018-09-04 | 东华工程科技股份有限公司 | A kind of reaction system of synthesis polymethoxy dimethyl ether |
| 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 |
| 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 |
| CN110508018A (en) * | 2019-09-03 | 2019-11-29 | 中国石油大学(华东) | Produce the device and method of polymethoxy dimethyl ether |
-
2016
- 2016-12-22 CN CN201621420715.3U patent/CN206337198U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108484371A (en) * | 2018-04-27 | 2018-09-04 | 东华工程科技股份有限公司 | A kind of reaction system of synthesis polymethoxy dimethyl ether |
| 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 |
| 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 |
| 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 |
| CN110508018A (en) * | 2019-09-03 | 2019-11-29 | 中国石油大学(华东) | Produce the device and method of polymethoxy dimethyl ether |
| CN110508018B (en) * | 2019-09-03 | 2022-02-25 | 中国石油大学(华东) | Device and method for producing polymethoxy dimethyl ether |
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