CN203112715U - Dimethyl ether preparation device - Google Patents
Dimethyl ether preparation device Download PDFInfo
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- CN203112715U CN203112715U CN 201320141778 CN201320141778U CN203112715U CN 203112715 U CN203112715 U CN 203112715U CN 201320141778 CN201320141778 CN 201320141778 CN 201320141778 U CN201320141778 U CN 201320141778U CN 203112715 U CN203112715 U CN 203112715U
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- Prior art keywords
- dimethyl ether
- methanol
- condenser
- methyl alcohol
- tower
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Abstract
The utility model discloses a dimethyl ether preparation device and relates to the technical field of dimethyl ether production. The dimethyl ether preparation device comprises a methanol vaporizer, a heat exchanger, a methanol dehydration reactor, a coarse dimethyl ether condenser, a coarse dimethyl ether tank, a dimethyl ether absorption column, a dimethyl ether rectifying column, a rectifying column condenser and a methanol recovering column, wherein the methanol vaporizer is connected with the heat exchanger, the heat exchanger is connected with the methanol dehydration reactor, the methanol dehydration reactor is connected with the coarse dimethyl ether condenser, the coarse dimethyl ether condenser is connected with the coarse dimethyl ether tank, the coarse dimethyl ether tank is respectively connected with the dimethyl ether absorption column and the dimethyl ether rectifying column, the dimethyl ether rectifying column is respectively connected with the rectifying column condenser and the methanol recovering column, and the methanol recovering column is connected with the methanol dehydration reactor. With the dimethyl ether preparation device, the energy consumption can be reduced, the requirements on the reaction condition of the whole reaction are not strict, and the efficiency of preparing dimethyl ether by using methanol is sufficiently improved.
Description
Technical field
The utility model relates to the dme production technical field, particularly a kind of dimethyl ether production device.
Background technology
The molecular formula of dme (DME) is CH
3OCH
3Colorless and odorless is nontoxic, has the similar physical properties of liquefied petroleum gas (LPG) (LPG), its cetane value is also higher, therefore, dme is as outside the sprays, also can be directly as substitute and the vehicle fuel of liquefied petroleum gas (LPG), be a kind of novel clean energy, at home and abroad all have a good application prospect.
Generally adopt synthetic gas (CO+2H at present both at home and abroad
2) single stage method production preparation dme, this method adopts synthesizing methanol reaction and Dehydration of methanol to finish synthetic gas per pass conversion height in a reactor.This technology is raw material with coal or Sweet natural gas, will be synthetic gas with coal and conversion of natural gas all, could dimethyl ether synthesis.Not only invest hugely, and power consumption is very high, and reaction conditions is had relatively high expectations, and equipment is also complicated.
The utility model content
(1) technical problem that will solve
The technical problems to be solved in the utility model is: how a kind of device of producing dme more efficiently is provided.
(2) technical scheme
The utility model provides a kind of dimethyl ether production device, described device comprises: the methyl alcohol vaporizer, interchanger, the Dehydration of methanol device, thick methyl ether condenser, thick methyl ether jar, the absorption of dimethyl ether tower, the dme rectifying tower, rectifying tower condenser and methanol distillation column, described methyl alcohol vaporizer is connected in described interchanger, described interchanger is connected in described Dehydration of methanol device, described Dehydration of methanol device is connected in described thick methyl ether condenser, described thick methyl ether condenser is connected in described thick methyl ether jar, described thick methyl ether jar is connected to described absorption of dimethyl ether tower and described dme rectifying tower, described rectifying tower is connected to described rectifying tower condenser and described methanol distillation column, and described recovery tower is connected in described Dehydration of methanol device.
Wherein, described device also comprises waste gas treatment equipment, and described waste gas treatment equipment is connected in described absorption of dimethyl ether tower.
Wherein, described device also comprises the product storage tank, and described product storage tank is connected in the rectifying tower condenser.
Wherein, described device also comprises purification tank for liquid waste, and described purification tank for liquid waste is connected with described methanol distillation column.
Wherein, described device also comprises the methyl alcohol storage tank that places described methyl alcohol vaporizer front end, and described methyl alcohol storage tank links to each other with described methyl alcohol vaporizer.
(3) beneficial effect
The utility model provides a kind of dimethyl ether production device, and it is vaporized by methyl alcohol, and heat exchange then enters into the Dehydration of methanol device, can cut down the consumption of energy, entire reaction requires also not harsh to reaction conditions, has fully improved the efficient that methyl alcohol is produced dme.
Description of drawings
Fig. 1 is the structural representation of the embodiment of a kind of dimethyl ether production device of the utility model.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples are used for explanation the utility model, but are not used for limiting scope of the present utility model.
As shown in Figure 1, the utility model provides a kind of dme vapor phase production device, the utility model provides a kind of dimethyl ether production device, described device comprises: methyl alcohol vaporizer 2, interchanger 3, Dehydration of methanol device 4, thick methyl ether condenser 5, thick methyl ether jar 6, absorption of dimethyl ether tower 7, dme rectifying tower 8, rectifying tower condenser 9 and methanol distillation column 10, described methyl alcohol vaporizer 2 is connected in described interchanger 3, described interchanger 3 is connected in described Dehydration of methanol device 4, described Dehydration of methanol device 4 is connected in described thick methyl ether condenser 5, described thick methyl ether condenser 5 is connected in described thick methyl ether jar 6, described thick methyl ether jar 6 is connected to described absorption of dimethyl ether tower 7 and described dme rectifying tower 8, described dme rectifying tower 8 is connected to described rectifying tower condenser 9 and described methanol distillation column 10, described recovery tower is connected in described Dehydration of methanol device
For realizing the needs of environmental protection, preferably, described device also comprises waste gas treatment equipment 11, and described waste gas treatment equipment 11 is connected in described absorption of dimethyl ether tower 7.
For realizing the preservation of product, preferably, described device also comprises product storage tank 12, and described product storage tank 12 is connected in rectifying tower condenser 9.
Be the needs of realization environmental protection and saving and the recycle of water resources, described device also comprises purification tank for liquid waste, and described purification tank for liquid waste 13 is connected with described methanol distillation column 10.
Preferably, for realization response continue carry out, described device also comprises the methyl alcohol storage tank 1 that places described methyl alcohol vaporizer front end, described methyl alcohol storage tank links to each other with described methyl alcohol vaporizer 2.
Embodiment 1:
The utility model also provides a kind of dme gas-phase production, and its embodiment is:
A, methyl alcohol are vaporized in methyl alcohol vaporizer 2;
Methyl alcohol after B, the vaporization carries out heat exchange in interchanger 3, reach preset temp;
Gas-phase methanol after C, the process preheating enters into Dehydration of methanol device 4, and the pressure-controlling in the Dehydration of methanol device is at 0.6-1.6Mpa, and temperature is 250-400 ℃, and catalyzer adopts γ-Al
2O
3And the composite solid-acid catalyst of aluminosilicate combination, methyl alcohol advanced dehydration reaction and generated dme, and reaction formula is:
2CH
3OH=H
3COCH
3+H
2O
Side reaction has wherein also taken place, and reaction formula is:
CH
3OH=CO+2H
2
CO+H
2O=CO
2+H
2
H
3COCH
3=CH
4+H
2+CO。
Embodiment 2:
Based on embodiment 1, its embodiment also comprises:
D, the reacted output object of process step C comprise that product and by product enter into described thick methyl ether condenser 5 and cool off;
E, cooled output object enter into described thick methyl ether jar 6, gas-phase product in the described thick methyl ether jar enters into described absorption of dimethyl ether tower 7, liquid product after absorbing is back to described thick methyl ether jar 6, and unabsorbed waste gas enters into waste gas treatment equipment 11.
Embodiment 3:
Based on embodiment 2, its embodiment also comprises:
Product in F, the described thick methyl ether jar 6 enters described thick methyl ether rectifying tower 8 and carries out rectifying separation, the dme steam that comes out from described dme rectifying 8 column overhead is after described rectifying tower condenser 9 condensations, a part enters described dme rectifying tower 8, and another part enters described product storage tank 12 as the dme finished product.
Embodiment 4:
Based on embodiment 3, its embodiment also comprises:
G, the methanol-water solution that obtains from described dme rectifying tower 8 tower reactors then are delivered to described methanol distillation column 10 concentrate methyl alcohol, methyl alcohol after the concentrate enters described Dehydration of methanol device 4 recyclings, and the pure waste water that contains that described methanol distillation column 10 tower reactors produce enters to described purification tank for liquid waste 13, carries out can be used as reuse water after the biochemical treatment and recycles.
Above embodiment only is used for explanation the utility model; and be not to restriction of the present utility model; the those of ordinary skill in relevant technologies field; under the situation that does not break away from spirit and scope of the present utility model; can also make a variety of changes and modification; therefore all technical schemes that are equal to also belong to category of the present utility model, and scope of patent protection of the present utility model should be defined by the claims.
Claims (5)
1. dimethyl ether production device, it is characterized in that, described device comprises: the methyl alcohol vaporizer, interchanger, the Dehydration of methanol device, thick methyl ether condenser, thick methyl ether jar, the absorption of dimethyl ether tower, the dme rectifying tower, rectifying tower condenser and methanol distillation column, described methyl alcohol vaporizer is connected in described interchanger, described interchanger is connected in described Dehydration of methanol device, described Dehydration of methanol device is connected in described thick methyl ether condenser, described thick methyl ether condenser is connected in described thick methyl ether jar, described thick methyl ether jar is connected to described absorption of dimethyl ether tower and described dme rectifying tower, described rectifying tower is connected to described rectifying tower condenser and described methanol distillation column, and described recovery tower is connected in described Dehydration of methanol device.
2. device as claimed in claim 1 is characterized in that, described device also comprises waste gas treatment equipment, and described waste gas treatment equipment is connected in described absorption of dimethyl ether tower.
3. device as claimed in claim 1 is characterized in that, described device also comprises the product storage tank, and described product storage tank is connected in the rectifying tower condenser.
4. device as claimed in claim 1 is characterized in that, described device also comprises purification tank for liquid waste, and described purification tank for liquid waste is connected with described methanol distillation column.
5. device as claimed in claim 1 is characterized in that, described device also comprises the methyl alcohol storage tank that places described methyl alcohol vaporizer front end, and described methyl alcohol storage tank links to each other with described methyl alcohol vaporizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320141778 CN203112715U (en) | 2013-03-26 | 2013-03-26 | Dimethyl ether preparation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320141778 CN203112715U (en) | 2013-03-26 | 2013-03-26 | Dimethyl ether preparation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203112715U true CN203112715U (en) | 2013-08-07 |
Family
ID=48893083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320141778 Expired - Fee Related CN203112715U (en) | 2013-03-26 | 2013-03-26 | Dimethyl ether preparation device |
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|---|---|
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103508855A (en) * | 2013-03-26 | 2014-01-15 | 新能(张家港)能源有限公司 | Device and method for preparing dimethyl ether |
| CN113087617A (en) * | 2021-03-10 | 2021-07-09 | 江苏琦衡农化科技有限公司 | Preparation method and preparation device of trichloroacetyl chloride |
-
2013
- 2013-03-26 CN CN 201320141778 patent/CN203112715U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103508855A (en) * | 2013-03-26 | 2014-01-15 | 新能(张家港)能源有限公司 | Device and method for preparing dimethyl ether |
| CN113087617A (en) * | 2021-03-10 | 2021-07-09 | 江苏琦衡农化科技有限公司 | Preparation method and preparation device of trichloroacetyl chloride |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhang Tao Inventor after: Xie Lei Inventor after: Liu Wenxiang Inventor before: Liu Wenxiang |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: LIU WENXIANG TO: ZHANG TAO XIE LEI LIU WENXIANG |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130807 Termination date: 20160326 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |