CN205295197U - Device of four tower continuous treating furfurals - Google Patents
Device of four tower continuous treating furfurals Download PDFInfo
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- CN205295197U CN205295197U CN201620007500.2U CN201620007500U CN205295197U CN 205295197 U CN205295197 U CN 205295197U CN 201620007500 U CN201620007500 U CN 201620007500U CN 205295197 U CN205295197 U CN 205295197U
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Abstract
The utility model relates to a device of four tower continuous treating furfurals, rare aldehyde digest exit linkage primary distillation tower of its liquid tank, the steam outlet of primary distillation tower top of the tower connects first condenser, and the liquid phase exit linkage of first condenser divides the aldehyde jar, divide the water layer exit linkage lightness -removing column of aldehyde jar, aqueous phase outlet at the bottom of the lightness -removing column tower connects second cooler, second cooler's water aldehyde exit linkage water aldehyde charging stock tank, and the backflow pipeline of water aldehyde charging stock tank connects the primary distillation tower, the steam outlet of lightness -removing column top of the tower connects the third condenser, and the third condenser is provided with light ingredient oil production port, divide the aldehyde layer exit linkage water wash column of aldehyde jar, the water aldehyde exit linkage lightness -removing column of water wash column top of the tower, the hair aldehyde oil production port at the bottom of the washing tata connects the metering tank, the fourth condenser is connected to the hair aldehyde exit linkage dehydration column of metering tank, the steam outlet of dehydration column top of the tower, the liquid phase exit linkage water aldehyde jar of fourth condenser, the water aldehyde exit linkage lightness -removing column of water aldehyde jar. The utility model discloses the furfural loss is little, and the furfural yield is high.
Description
Technical field
This utility model relates to furfural extraction unit, specifically the device of a kind of four tower continuous treating furfurals.
Background technology
Furfural production mainly includes two processes: (1) is hydrolyzed, and the process under the effect of H+ of the pentosan in plant adds temperature and is hydrolyzed to pentose, and pentose is through heating under the effect of H+, and further dehydration produces bran aldehyde; (2) refining, rare furfural hydrolysis liquid separated that hydrolysis obtains is refined, removes and hydrolyzed solution be with substantial amounts of water, and a small amount of acetic acid, methanol, the acetone of generation when being hydrolyzed, obtain qualified finished product furfural.
At present, refinement great majority adopt three towers continuously or interval process for refining, adopting three its advantages of tower continuous treating is constant product quality, but bad grasp during treating column row's residual liquid, the residual liquid of discharge is rare, and the furfural taken away is many, the few tower reactor of lifting rate easily blocks, residual liquid does not reclaim mostly, and refining rate is generally low, is generally about 85%; The refining rate that interval is refined is generally 86%.
Utility model content
This utility model aims to solve the problem that the problems referred to above that furfural technique exists refined continuously or intermittently by existing three towers, and the device of a kind of four tower continuous treating furfurals is provided, it increases lightness-removing column on the basis of original essence flow process, they are gently separated by methanol, acetone etc. by water aldehyde is de-from water aldehyde, improving the work efficiency of primary distillation tower, the methanol, the acetone that obtain are made fuel and are used; Increasing water scrubber to remove and add alkali and neutralize, wherein water aldehyde reclaims by returning primary distillation tower again after de-light.
This utility model solves its technical problem and the technical scheme is that
The device of a kind of four tower continuous treating furfurals, including original fluid container, primary distillation tower, dehydrating tower, also includes: lightness-removing column, water scrubber;
Rare aldehyde hydrolyzed solution outlet of original fluid container connects primary distillation tower, and the steam (vapor) outlet of primary distillation tower tower top connects the first condenser, and the liquid-phase outlet of the first condenser connects a point aldehyde tank;
The water layer outlet dividing aldehyde tank connects lightness-removing column, and the aqueous phase outlet at the bottom of lightness-removing column tower connects the second cooler, and the water aldehyde of the second cooler exports and connects water aldehyde head tank, and water aldehyde head tank connects primary distillation tower by reflux line; The steam (vapor) outlet of lightness-removing column tower top connects the 3rd condenser, and the 3rd condenser is provided with Light ends extraction mouth;
The aldehyde layer outlet dividing aldehyde tank connects water scrubber, arranges water inlet bottom water scrubber, and the water aldehyde outlet of water scrubber tower top connects lightness-removing column, arranges hairiness aldehyde extraction mouth at the bottom of water scrubber tower, hair aldehyde extraction mouth connection measuring tank;
The hair aldehyde outlet of measuring tank connects dehydrating tower, and the steam (vapor) outlet of dehydration column overhead connects the 4th condenser, and the liquid-phase outlet of the 4th condenser connects water aldehyde tank, and the water aldehyde outlet of water aldehyde tank connects lightness-removing column.
Further, at the bottom of primary distillation tower tower, waste water discharge opening is set.
Further, between the 3rd condenser and lightness-removing column, reflux line is set.
Further, also including de-light liquid trap, the water layer of point aldehyde tank exports, the water aldehyde of water scrubber tower top exports, the water aldehyde outlet of water aldehyde tank is connected with de-light liquid trap import respectively, and the outlet of de-light liquid trap connects lightness-removing column.
Adopting this utility model of technique scheme, compared with prior art, it provides the benefit that effect:
1. entering back into primary distillation tower after light for rare aldehyde hydrolysis loss of thick fluid, after not having Light ends in primary distillation tower, side reaction is few, and column efficiency is high, and overhead furfural content is high; Thick aldehyde concentration also improves; And improve thick aldehyde rate.
2. utilize WATER-WASHING METHOD to replace adding alkali to neutralize, remove the most of organic acid in thick aldehyde, improve refining rate.
3. not having Light ends to affect in distillation process, corresponding condensation polymerization resinification reduces in a large number, utilizes water scrubber, dehydrating tower to eliminate the organic acid in furfural; The produced side reaction in order to avoid furfural is repeatedly heated that do not have treating column, improves furfural yield.
4. the furfural in the fraction that dehydrating tower produces is reclaimed.
5. reduce loss in Furfural Treating Process, improve furfural yield 6%-7%.
6. adopting this utility model technique, in subtractive process, furfural loss only 0.5%, improves furfural yield 6%-7%; With ten thousand tons of yield for counting, annual 600 tons of the furfural that reclaims, per ton can take in more than 500 ten thousand yuan year by 8000 yuan of calculating more.
Accompanying drawing explanation
Fig. 1 is structure and the process flow diagram thereof of this utility model embodiment;
In figure: 1-original fluid container; 2-primary distillation tower; 3-the first condenser; 4-divides aldehyde tank; 5-lightness-removing column; 6-water scrubber; 7-the second cooler; 8-water aldehyde head tank; 9-the 3rd condenser; 10-dehydrating tower; 11-the 4th condenser; 12-water aldehyde tank; Measuring tank 13; De-light liquid trap 14.
Detailed description of the invention
Below in conjunction with embodiment, this utility model is further elaborated, but this utility model is not constituted any restriction by embodiment.
Referring to Fig. 1, the device of a kind of four tower continuous treating furfurals, primary distillation tower 2, lightness-removing column 5, water scrubber 6, dehydrating tower 10 constitute four tower structures.
Rare aldehyde hydrolyzed solution outlet of original fluid container 1 connects primary distillation tower 2, the steam (vapor) outlet of primary distillation tower 2 tower top connects the first condenser 3, first condenser 3 is made up of the condenser of two series connection, and the liquid-phase outlet of the first condenser 3 terminal connects a point aldehyde tank 4, and point aldehyde tank 4 is made up of the tank of two series connection.
The water layer outlet dividing aldehyde tank 4 connects de-light liquid trap 14, the bottom liquid outlet of de-light liquid trap 14 connects lightness-removing column 5, aqueous phase outlet at the bottom of lightness-removing column 5 tower connects the second cooler 7, the water aldehyde outlet of the second cooler 7 connects water aldehyde head tank 8 by conveyance conduit and pump, is connected to reflux line between water aldehyde head tank 8 and primary distillation tower 2; The steam (vapor) outlet of lightness-removing column 5 tower top connects the 3rd condenser 9, and the 3rd condenser 9 is provided with Light ends extraction mouth.
The aldehyde layer outlet dividing aldehyde tank 4 connects water scrubber 6, arranges water inlet bottom water scrubber 6, and the water aldehyde outlet connection of water scrubber 6 tower top takes off light liquid trap 14, and water aldehyde enters lightness-removing column 5 by liquid outlet bottom de-light liquid trap 14; Arranging hairiness aldehyde extraction mouth at the bottom of water scrubber 6 tower, hair aldehyde extraction mouth connects measuring tank 13.
The hair aldehyde outlet of measuring tank 13 connects dehydrating tower 10, the steam (vapor) outlet of dehydrating tower 10 tower top connects the 4th condenser 11, the liquid-phase outlet of the 4th condenser 11 connects water aldehyde tank 12, the water aldehyde outlet of water aldehyde tank 12 connects de-light liquid trap 14, and water aldehyde enters lightness-removing column 5 by liquid outlet bottom de-light liquid trap 14.
At the bottom of the tower of primary distillation tower 2, waste water discharge opening is set; It is provided with reflux line between 3rd condenser 9 and lightness-removing column 5.
Primary distillation tower 2, dehydrating tower 10 adopt valve tower; Lightness-removing column 5, water scrubber 6 adopt sieve-plate tower.
The device of above-mentioned four tower continuous treating furfurals, its subtractive process is as follows:
(1) rare aldehyde hydrolyzed solution enters primary distillation tower 2 from original fluid container 1, and primary distillation tower 2 overhead vapours condenses to 40 DEG C through the first condenser 3, and condensed fluid enters a point aldehyde tank 4, discharges waste water at the bottom of primary distillation tower 2 tower;
(2) at a point aldehyde tank 4 inner condensat liquid stratification, water layer enters lightness-removing column 5, and in lightness-removing column 5, tower bottom water enters back into water aldehyde head tank 8 after the second cooler 7 condensation, is then refluxed for into primary distillation tower 2; Lightness-removing column 5 overhead vapours is extraction Light ends after the 3rd condenser 9 condensation, all the other lightness-removing columns 5 that reflux;
(3) dividing aldehyde layer in aldehyde tank 4 to enter water scrubber 6, water scrubber 6 is intake by bottom, and aldehyde water ratio is for 1:1, and water scrubber 6 overhead water aldehyde enters lightness-removing column 5, and the hair aldehyde of extraction at the bottom of tower puts into measuring tank 13;
(4) the hair aldehyde after metering sends into dehydrating tower 10, and dehydrating tower 10 overhead vapours enters water aldehyde tank 12 after the 4th condenser 11 condensation, and water aldehyde after layering places into lightness-removing column 5; Dehydrating tower 10 tower reactor is discharged and is product output, and remaining acetic acid and moisture content are by overhead extraction.
The foregoing is only the embodiment that this utility model is preferably feasible, not thereby limit to interest field of the present utility model, the equivalence change that all utilization this utility model description are made, it is both contained within interest field of the present utility model.
Claims (4)
1. a device for four tower continuous treating furfurals, including original fluid container, primary distillation tower, dehydrating tower, it is characterised in that:
Also include: lightness-removing column, water scrubber;
Rare aldehyde hydrolyzed solution outlet of original fluid container connects primary distillation tower, and the steam (vapor) outlet of primary distillation tower tower top connects the first condenser, and the liquid-phase outlet of the first condenser connects a point aldehyde tank;
The water layer outlet dividing aldehyde tank connects lightness-removing column, and the aqueous phase outlet at the bottom of lightness-removing column tower connects the second cooler, and the water aldehyde of the second cooler exports and connects water aldehyde head tank, and water aldehyde head tank connects primary distillation tower by reflux line; The steam (vapor) outlet of lightness-removing column tower top connects the 3rd condenser, and the 3rd condenser is provided with Light ends extraction mouth;
The aldehyde layer outlet dividing aldehyde tank connects water scrubber, arranges water inlet bottom water scrubber, and the water aldehyde outlet of water scrubber tower top connects lightness-removing column, arranges hairiness aldehyde extraction mouth at the bottom of water scrubber tower, hair aldehyde extraction mouth connection measuring tank;
The hair aldehyde outlet of measuring tank connects dehydrating tower, and the steam (vapor) outlet of dehydration column overhead connects the 4th condenser, and the liquid-phase outlet of the 4th condenser connects water aldehyde tank, and the water aldehyde outlet of water aldehyde tank connects lightness-removing column.
2. the device of four tower continuous treating furfurals according to claim 1, it is characterised in that at the bottom of primary distillation tower tower
Waste water discharge opening is set.
3. the device of four tower continuous treating furfurals according to claim 1, it is characterised in that between the 3rd condenser and lightness-removing column, reflux line is set.
4. the device of four tower continuous treating furfurals according to claim 1, it is characterized in that, also include de-light liquid trap, divide the water layer outlet of aldehyde tank, the water aldehyde of water scrubber tower top exports, the water aldehyde outlet of water aldehyde tank is connected with de-light liquid trap import respectively, the outlet connection lightness-removing column of de-light liquid trap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620007500.2U CN205295197U (en) | 2016-01-07 | 2016-01-07 | Device of four tower continuous treating furfurals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620007500.2U CN205295197U (en) | 2016-01-07 | 2016-01-07 | Device of four tower continuous treating furfurals |
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| Publication Number | Publication Date |
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| CN205295197U true CN205295197U (en) | 2016-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620007500.2U Expired - Fee Related CN205295197U (en) | 2016-01-07 | 2016-01-07 | Device of four tower continuous treating furfurals |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105524031A (en) * | 2016-01-07 | 2016-04-27 | 唐山宏文有机肥料有限公司 | Process and apparatus for four-tower continuous refining of furfural |
-
2016
- 2016-01-07 CN CN201620007500.2U patent/CN205295197U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105524031A (en) * | 2016-01-07 | 2016-04-27 | 唐山宏文有机肥料有限公司 | Process and apparatus for four-tower continuous refining of furfural |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160608 Termination date: 20190107 |