CN204051037U - Furfural continuous rectification apparatus - Google Patents
Furfural continuous rectification apparatus Download PDFInfo
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- CN204051037U CN204051037U CN201420467991.XU CN201420467991U CN204051037U CN 204051037 U CN204051037 U CN 204051037U CN 201420467991 U CN201420467991 U CN 201420467991U CN 204051037 U CN204051037 U CN 204051037U
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- aldehyde
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- refining kettle
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Abstract
Furfural continuous rectification apparatus, form primarily of refining kettle, water aldehyde tank, smart aldehyde tank, smart aldehyde storage tank and water aldehyde storage tank, refining kettle outer setting dewatering unit, dewatering unit comprises dehydrating tower, thick aldehyde head tank and point aldehyde tank, thick aldehyde head tank is connected with dehydration column overhead by flowmeter, dehydration column overhead is connected with a point of aldehyde tank by condenser, aldehyde pot bottom is divided to be connected with dehydration column overhead by flowmeter, divide in the middle part of aldehyde tank and be connected with water aldehyde tank by pipeline, dehydrating tower tower reactor is connected with the import of refining kettle by pipeline.The utility model is at the additional dewatering unit of original interval refining kettle, dewatering part during interval is refining carries out separately, form continuous dehydration, becoming interval refines as continuous rectification, not only can improve refining disposal ability, because dehydrating tower is removing moisture content and Light ends simultaneously also remove portion acid part, therefore and alkali charge reduce 40 ~ 50%, refining rate can carry 1%, has small investment, the advantage that simple to operate and operating cost is low.
Description
Technical field
The utility model relates to furfural production technical field, is specifically related to a kind of furfural continuous rectification apparatus.
Background technology
The most of producers of thick aldehyde in current China furfural production process adopt and add in alkali and after organic acid, furfural product is refined into again with an interval refining kettle, refining kettle there is the filled column that very little, squeeze in refining kettle by disposable for thick aldehyde time refining, pass into Steam Heating again and carry out decompression distillation, both first the moisture content of thick aldehyde and Light ends were steamed, then smart aldehyde steams by second step again, there is following problem in this technique: separating effect is poor, the quantity that water aldehyde takes away furfural is more, primary purification rate is low, part furfural is caused to carry out secondary refining, secondary has been heated heat loss, thick aldehyde dehydration is refined and is carried out inevitably causing allergic reaction when increase furfural is heated at one pot, in the refining kettle time of staying, longer and thick aldehyde is heated side reactions such as can causing certain condensation light component together, the bad control of product quality.
Summary of the invention
The utility model provides a kind of furfural continuous rectification apparatus, to solve the problem of the many and bad control of product quality of intermittently operated inferior separating effect, side reaction that prior art exists.
The utility model device is primarily of refining kettle, water aldehyde tank, essence aldehyde tank, essence aldehyde storage tank and water aldehyde storage tank composition, refining kettle top is connected with smart aldehyde tank by condenser, essence aldehyde tank is connected with smart aldehyde storage tank, water aldehyde tank is connected with water aldehyde storage tank, solving the technical scheme that its technical problem adopts is refining kettle outer setting dewatering unit, dewatering unit comprises dehydrating tower, thick aldehyde head tank and point aldehyde tank, thick aldehyde head tank is connected with dehydration column overhead by flowmeter, dehydration column overhead is connected with a point of aldehyde tank by condenser, aldehyde pot bottom is divided to be connected with dehydration column overhead by flowmeter, divide in the middle part of aldehyde tank and be connected with water aldehyde tank by pipeline, dehydrating tower tower reactor is connected with the import of refining kettle by pipeline.
Above-mentioned dehydrating tower tower reactor is connected with dehydration aldehyde storage tank by pipeline.
Above-mentioned dehydrating tower is plate column, distance between plates 300mm, downflow weir 30mm, and arc pipe height is tray spacing 14/15, valve opening diameter 8mm, percent opening 8%.
Operation principle of the present utility model utilizes dewatering unit, and the dewatering part during interval is refining carries out separately, and form continuous dehydration, concrete technology step is as follows:
(1) start dehydrating tower, tower reactor is heated;
(2) thick aldehyde is squeezed into thick aldehyde head tank, by flowmeter, thick aldehyde is entered dehydrating tower from tower top, tower reactor heating simultaneously, top vacuum establishes 650 ~ 700 millimetress of mercury, tower top temperature is 50 DEG C ~ 70 DEG C tower reactor vacuum, 600 ~ 650 millimeters of tribute posts, temperature 102 DEG C ~ 112 DEG C carries out the de-light process of dehydration, and the dehydration that tower reactor obtains takes off light aldehyde directly can put into refining kettle, also can put into dehydration aldehyde storage tank; Overhead fraction enters in point aldehyde tank through condenser condenses, and point isolated thick aldehyde of aldehyde tank enters dehydrating tower through flowmeter from tower top, and in point aldehyde tank, water aldehyde layer then flows to water aldehyde tank, inverted engine when water aldehyde is piled, and is put into by water aldehyde in water aldehyde storage tank;
(3) the de-light aldehyde of dehydration is refined in refining kettle, refining kettle both can also can intermittently be refined by continuous treating, heat is added little during continuous treating, vacuum 650 ~ 680 millimetres of mercury at the bottom of refining kettle still, still temperature is 98 DEG C ~ 106 DEG C, the smart aldehyde that refining kettle top obtains enters smart aldehyde tank after condenser condenses, and then inverted engine when smart aldehyde tank is full, is put into smart aldehyde in smart aldehyde storage tank.
The utility model device adds a dewatering unit outside original interval refining kettle, dewatering part during interval is refining carries out separately, form continuous dehydration, becoming interval refines as continuous rectification, not only can improve refining disposal ability, because dehydrating tower is removing moisture content and Light ends simultaneously also remove portion acid part, therefore and alkali charge reduce 40 ~ 50%, refining rate can carry 1%, has small investment, the advantage that simple to operate and operating cost is low.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the structural representation of the utility model device.
1 refining kettle, 2 dehydrating towers, 3 thick aldehyde head tanks, 4 condensers, 5 points of aldehyde tanks, 6 water aldehyde tanks, 7 smart aldehyde tanks, 8 smart aldehyde storage tanks, 9 water aldehyde storage tanks, 10 flowmeters, 11 dehydration aldehyde storage tanks in figure.
Detailed description of the invention
As shown in the figure, a kind of furfural continuous rectification apparatus, primarily of refining kettle 1, water aldehyde tank 6, essence aldehyde tank 7, essence aldehyde storage tank 8 and water aldehyde storage tank 9 form, refining kettle 1 top is connected with smart aldehyde tank 7 by condenser 4, essence aldehyde tank 7 is connected with smart aldehyde storage tank 8, water aldehyde tank 6 is connected with water aldehyde storage tank 9, refining kettle 1 outer setting dewatering unit, dewatering unit comprises dehydrating tower 2, thick aldehyde head tank 3 and point aldehyde tank 5, dehydrating tower 2 is plate column, distance between plates 300mm, downflow weir 30mm, arc pipe height is tray spacing 14/15, valve opening diameter 8mm, percent opening 8%, thick aldehyde head tank 3 is connected with dehydrating tower 2 tower top by flowmeter 10, dehydrating tower 2 tower top is connected with a point aldehyde tank 5 by condenser 4, divide bottom aldehyde tank 5 and be connected with dehydrating tower 2 tower top by flowmeter 10, divide in the middle part of aldehyde tank 5 and be connected with water aldehyde tank 6 by pipeline, dehydrating tower 2 tower reactor is connected by the import of pipeline with refining kettle 1, dehydrating tower 2 tower reactor is connected with dehydration aldehyde storage tank 11 by pipeline.
Furfural continuous rectificating technique of the present utility model is: in above-mentioned furfural continuous rectification apparatus, utilize dewatering unit, and the dewatering part during interval is refining carries out separately, and form continuous dehydration, concrete technology step is as follows:
(1) start dehydrating tower 2, tower reactor is heated;
(2) thick aldehyde is squeezed into thick aldehyde head tank 3, by flowmeter 10, thick aldehyde is entered dehydrating tower 2 from tower top, tower reactor heating simultaneously, top vacuum establishes 650 ~ 700 millimetress of mercury, tower top temperature is 50 DEG C ~ 70 DEG C tower reactor vacuum, 600 ~ 650 millimeters of tribute posts, temperature 102 DEG C ~ 112 DEG C carries out the de-light process of dehydration, and the dehydration that tower reactor obtains takes off light aldehyde can directly put into refining kettle 1, also can put into dehydration aldehyde storage tank 11; Overhead fraction enters in point aldehyde tank 5 through condenser 4 condensation, and point isolated thick aldehyde of aldehyde tank 5 enters dehydrating tower 2 through flowmeter 10 from tower top, and in point aldehyde tank 5, water aldehyde layer then flows to water aldehyde tank 6, inverted engine when water aldehyde is piled, and is put into by water aldehyde in water aldehyde storage tank 9;
(3) the de-light aldehyde of dehydration is refined in refining kettle 1, refining kettle 1 both can also can intermittently be refined by continuous treating, heat is added little during continuous treating, vacuum 650 ~ 680 millimetres of mercury at the bottom of refining kettle 1 still, still temperature is 98 DEG C ~ 106 DEG C, the smart aldehyde that refining kettle 1 top obtains enters smart aldehyde tank 7 after condenser 4 condensation, and then inverted engine when smart aldehyde tank 7 is full, is put into smart aldehyde in smart aldehyde storage tank 8.
Claims (3)
1. a furfural continuous rectification apparatus, primarily of refining kettle, water aldehyde tank, essence aldehyde tank, essence aldehyde storage tank and water aldehyde storage tank composition, refining kettle top is connected with smart aldehyde tank by condenser, essence aldehyde tank is connected with smart aldehyde storage tank, water aldehyde tank is connected with water aldehyde storage tank, it is characterized in that refining kettle outer setting dewatering unit, dewatering unit comprises dehydrating tower, thick aldehyde head tank and point aldehyde tank, thick aldehyde head tank is connected with dehydration column overhead by flowmeter, dehydration column overhead is connected with a point of aldehyde tank by condenser, aldehyde pot bottom is divided to be connected with dehydration column overhead by flowmeter, divide in the middle part of aldehyde tank and be connected with water aldehyde tank by pipeline, dehydrating tower tower reactor is connected with the import of refining kettle by pipeline.
2. furfural continuous rectification apparatus according to claim 1, is characterized in that dehydrating tower tower reactor is connected with dehydration aldehyde storage tank by pipeline.
3. furfural continuous rectification apparatus according to claim 1, it is characterized in that dehydrating tower is plate column, distance between plates 300mm, downflow weir 30mm, arc pipe height is tray spacing 14/15, valve opening diameter 8mm, percent opening 8%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420467991.XU CN204051037U (en) | 2014-08-19 | 2014-08-19 | Furfural continuous rectification apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420467991.XU CN204051037U (en) | 2014-08-19 | 2014-08-19 | Furfural continuous rectification apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN204051037U true CN204051037U (en) | 2014-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420467991.XU Expired - Fee Related CN204051037U (en) | 2014-08-19 | 2014-08-19 | Furfural continuous rectification apparatus |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104128015A (en) * | 2014-08-19 | 2014-11-05 | 衡水中科信能源有限公司 | Furfural continuous rectification device and process |
| CN105461669A (en) * | 2015-12-28 | 2016-04-06 | 山西恒宇生物科技有限公司 | Dehydration and deacidification device for refining furfural and refining process |
-
2014
- 2014-08-19 CN CN201420467991.XU patent/CN204051037U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104128015A (en) * | 2014-08-19 | 2014-11-05 | 衡水中科信能源有限公司 | Furfural continuous rectification device and process |
| CN105461669A (en) * | 2015-12-28 | 2016-04-06 | 山西恒宇生物科技有限公司 | Dehydration and deacidification device for refining furfural and refining process |
| CN105461669B (en) * | 2015-12-28 | 2018-10-30 | 山西恒宇生物科技有限公司 | A kind of refined furfural dehydration deacidifying device and process for refining |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20170804 Granted publication date: 20141231 |
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| PP01 | Preservation of patent right | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20200804 Granted publication date: 20141231 |
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| PD01 | Discharge of preservation of patent | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141231 Termination date: 20170819 |
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| CF01 | Termination of patent right due to non-payment of annual fee |