CN208732971U - Mixed alcohol refines device for improving quality - Google Patents
Mixed alcohol refines device for improving quality Download PDFInfo
- Publication number
- CN208732971U CN208732971U CN201821415974.6U CN201821415974U CN208732971U CN 208732971 U CN208732971 U CN 208732971U CN 201821415974 U CN201821415974 U CN 201821415974U CN 208732971 U CN208732971 U CN 208732971U
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- Prior art keywords
- tower
- treating column
- ethylene glycol
- discharge port
- primary
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Abstract
The utility model belongs to chemical plant installations product purification process for upgrading device field, is to be related to mixed alcohol purification device for improving quality more specifically.Including dehydrating tower, primary treating column, purifying ethylene glycol tower, dealdehyding resin bed, diethylene glycol treating column, the tower reactor discharge port of dehydrating tower is connected with the feed inlet of primary treating column, the tower reactor discharge port of primary treating column is connected with the feed inlet of diethylene glycol treating column, the middle part discharge port of primary treating column is connected with purifying ethylene glycol tower feed inlet, the middle part discharge port of purifying ethylene glycol tower is connected with dealdehyding resin bed, and the tower reactor discharge port of purifying ethylene glycol tower is connected with the feed inlet of primary treating column.
Description
Technical field:
The utility model belongs to chemical plant installations product purification process for upgrading device field, is to be related to mixed alcohol more specifically
Refine device for improving quality.
Background technique:
Mixed alcohol purification process for upgrading be usually will containing ethylene glycol (MEG), diethylene glycol (DEG), triethylene glycol (TEG),
The mixed alcohol of the substances such as tetraethylene-glycol (PEG), water, aldehyde carries out segmentation purification using different boiling difference, obtain purification MEG,
DEG and weight alcohol product.Due to upstream hydrolysis process, mixes and contain a large amount of water, a part of aldehyde and organic acid in alcohol, lead to the UV of MEG
It is worth not up to standard.
Utility model content:
The utility model is exactly in view of the above-mentioned problems, provide a kind of mixed alcohol purification device for improving quality.
To achieve the goals above, the utility model adopts the following technical solution, including dehydrating tower, primary treating column, second
Glycol treating column, dealdehyding resin bed, diethylene glycol treating column, the feed inlet phase of the tower reactor discharge port of dehydrating tower and primary treating column
Even, the tower reactor discharge port of primary treating column is connected with the feed inlet of diethylene glycol treating column, the middle part discharge port of primary treating column
It is connected with purifying ethylene glycol tower feed inlet, the middle part discharge port of purifying ethylene glycol tower is connected with dealdehyding resin bed, purifying ethylene glycol
The tower reactor discharge port of tower is connected with the feed inlet of primary treating column.
Dehydrating tower, purifying ethylene glycol tower, is provided with condenser at the top of diethylene glycol treating column at primary treating column；Second
Production at the top of glycol treating column is connected by condenser with the feed inlet of dehydrating tower, adopting at the top of diethylene glycol treating column
Object is connected by condenser with the feed inlet of primary treating column out.
Tower reactor liquid phase is produced by tower bottom liquid phase mouth, is conveyed by pump, into reboiler, after reboiler, and vaporization.Reboiler
Outlet connection tower reactor vapour phase mouth, the interior flash distillation of tower reactor, provides heat for whole system.
11 blocks of stripping plates and 8 pieces of rectifying plates are provided in dehydrating tower, the above are rectifying sections for feed inlet, and the following are stripping sections.
11 blocks of stripping plates and 5 pieces of rectifying plates are provided in primary treating column.
5 blocks of stripping plates and 20 pieces of rectifying plates are provided in purifying ethylene glycol tower.The middle part discharge port of purifying ethylene glycol tower is set
It sets between the 10th piece of rectifying plate and the 11st piece of rectifying plate
2 blocks of stripping plates and 18 pieces of rectifying plates are provided in diethylene glycol treating column.The middle part of diethylene glycol treating column discharges
Mouth is arranged between the 10th piece of rectifying plate and the 11st piece of rectifying plate.
The utility model has the beneficial effects that
1, by between each tower realize tandem segmentation purification, avoid it is single in order to most seek a certain product index, rather than
Raising number of theoretical plate (improving tower height) and reflux ratio simply.
, at various pressures segmentation purification, complex optimum, tandem purification, by primary purification after, targetedly remove
Impurity realizes the purpose for reducing energy consumption.
, setting dehydrating tower and primary refined tower top be as whole system light fraction outlet, diethylene glycol treating column tower reactor
Sub-export is recombinated as whole system, light, heavy constituent is avoided to be enriched in systems.
, reduce influence of the knot carbon to product quality, reduce heat source stream specification, reduce equipment investment and operating cost.
Detailed description of the invention:
Fig. 1 is the structural schematic diagram of the utility model.
In Fig. 1,1 is dehydrating tower, and 2 be primary treating column, and 3 be purifying ethylene glycol tower, and 4 be dealdehyding resin bed, and 5 be diethyl two
Alcohol treating column.
Specific embodiment:
As shown in Figure 1, the utility model includes dehydrating tower, primary treating column, purifying ethylene glycol tower, dealdehyding resin bed, two
Purifying ethylene glycol tower, the tower reactor discharge port of dehydrating tower are connected with the feed inlet of primary treating column, the tower reactor discharging of primary treating column
Mouth is connected with the feed inlet of diethylene glycol treating column, middle part discharge port and the purifying ethylene glycol tower feed inlet phase of primary treating column
Even, the middle part discharge port of purifying ethylene glycol tower is connected with dealdehyding resin bed, tower reactor discharge port and the primary essence of purifying ethylene glycol tower
The feed inlet of tower processed is connected.
Dehydrating tower, purifying ethylene glycol tower, is provided with condenser at the top of diethylene glycol treating column at primary treating column；Second
Production at the top of glycol treating column is connected by condenser with the feed inlet of dehydrating tower, adopting at the top of diethylene glycol treating column
Object is connected by condenser with the feed inlet of primary treating column out.
Tower reactor liquid phase is produced by tower bottom liquid phase mouth, is conveyed by pump, into reboiler, after reboiler, and vaporization.Reboiler
Outlet connection tower reactor vapour phase mouth, the interior flash distillation of tower reactor, provides heat for whole system.
11 blocks of stripping plates and 8 pieces of rectifying plates are provided in dehydrating tower, the above are rectifying sections for feed inlet, and the following are stripping sections.
11 blocks of stripping plates and 5 pieces of rectifying plates are provided in primary treating column.
5 blocks of stripping plates and 20 pieces of rectifying plates are provided in purifying ethylene glycol tower.The middle part discharge port of purifying ethylene glycol tower is set
It sets between the 10th piece of rectifying plate and the 11st piece of rectifying plate
2 blocks of stripping plates and 18 pieces of rectifying plates are provided in diethylene glycol treating column.The middle part of diethylene glycol treating column discharges
Mouth is arranged between the 10th piece of rectifying plate and the 11st piece of rectifying plate.
When production, including five steps, it is dehydration, primary purification, purifying ethylene glycol, diethylene glycol purification respectively and takes off
Aldehyde.In dehydrating tower, under conditions of 30KpaA, 158 DEG C, light component is deviate from from tower top, aqueous 99wt% in light component, remaining
For aldehydes, acids and ethylene glycol；Tower reactor extraction enters primary treating column；In primary treating column, under the conditions of 2KpaA, 120 DEG C,
Obtain the ethylene glycol of 98% or more purity from overhead extraction, tower reactor is mixed alcohol, the condenser at the top of primary treating column make light component with
Vapor phase discharge system adjusts light component discharge amount by adjusting condenser, light component is avoided to accumulate in systems；It is primary
Purification tower top production material enters purifying ethylene glycol tower, under the conditions of 14KpaA, 144 DEG C, is refined, overhead extraction hydrate
Material is back in dehydrating tower, and moisture is further removed system, and the middle part discharge port extraction of purifying ethylene glycol tower refines ethylene glycol,
After the purification of dealdehyding resin bed, final purifying ethylene glycol product is obtained, to guarantee that the extraction following filler of section can preferably moisten
It is wet, it improves efficiency, regurgitant volume/produced quantity is set in 10 ~ 15Wt；The mixed alcohol of primary treating column extraction enters diethylene glycol purification
Tower is refined under the conditions of 2KpaA, 158 DEG C, the middle part discharge port extraction purification diethylene glycol of diethylene glycol treating column, tower
Top extraction is back to primary treating column, further light component (MEG etc.), and tower reactor extraction goes out device, so far, heavy constituent as weight alcohol
Deviate from whole system, avoid accumulating, to guarantee that the extraction following filler of section can be soaked preferably, improves efficiency, regurgitant volume/extraction
Amount is set in 13 ~ 17Wt.
Claims (6)
1. mixed alcohol refines device for improving quality, which is characterized in that including dehydrating tower, primary treating column, purifying ethylene glycol tower, dealdehyding resin
Bed, diethylene glycol treating column, the tower reactor discharge port of dehydrating tower are connected with the feed inlet of primary treating column, the tower reactor of primary treating column
Discharge port is connected with the feed inlet of diethylene glycol treating column, the middle part discharge port and purifying ethylene glycol tower feed inlet of primary treating column
It is connected, the middle part discharge port of purifying ethylene glycol tower is connected with dealdehyding resin bed, the tower reactor discharge port and primary of purifying ethylene glycol tower
The feed inlet for the treatment of column is connected.
2. mixed alcohol according to claim 1 refines device for improving quality, which is characterized in that dehydrating tower, primary treating column, ethylene glycol
Condenser is provided at the top for the treatment of column, diethylene glycol treating column；The production of purifying ethylene glycol top of tower passes through condenser
It is connected with the feed inlet of dehydrating tower, the charging that the production at the top of diethylene glycol treating column passes through condenser and primary treating column
Mouth is connected.
3. mixed alcohol according to claim 1 refines device for improving quality, which is characterized in that be provided with 11 blocks of stripping plates in dehydrating tower
With 8 pieces of rectifying plates, the above are rectifying sections for feed inlet, and the following are stripping sections.
4. mixed alcohol according to claim 1 refines device for improving quality, which is characterized in that be provided with 11 pieces in primary treating column and mention
Evaporate plate and 5 pieces of rectifying plates.
5. mixed alcohol according to claim 1 refines device for improving quality, which is characterized in that be provided with 5 pieces in purifying ethylene glycol tower
Stripping plate and 20 pieces of rectifying plates, the middle part discharge port setting of purifying ethylene glycol tower the 10th piece of rectifying plate and the 11st piece of rectifying plate it
Between.
6. mixed alcohol according to claim 1 refines device for improving quality, which is characterized in that be provided with 2 in diethylene glycol treating column
The middle part discharge port of block stripping plate and 18 pieces of rectifying plates, diethylene glycol treating column is arranged in the 10th piece of rectifying plate and the 11st piece of rectifying
Between plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821415974.6U CN208732971U (en) | 2018-08-31 | 2018-08-31 | Mixed alcohol refines device for improving quality |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821415974.6U CN208732971U (en) | 2018-08-31 | 2018-08-31 | Mixed alcohol refines device for improving quality |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208732971U true CN208732971U (en) | 2019-04-12 |
Family
ID=66032990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821415974.6U Expired - Fee Related CN208732971U (en) | 2018-08-31 | 2018-08-31 | Mixed alcohol refines device for improving quality |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208732971U (en) |
-
2018
- 2018-08-31 CN CN201821415974.6U patent/CN208732971U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190412 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |