CN107141274A - A kind of extraction process of the methylfuran of furfuryl alcohol accessory substance 2 - Google Patents
A kind of extraction process of the methylfuran of furfuryl alcohol accessory substance 2 Download PDFInfo
- Publication number
- CN107141274A CN107141274A CN201710475961.1A CN201710475961A CN107141274A CN 107141274 A CN107141274 A CN 107141274A CN 201710475961 A CN201710475961 A CN 201710475961A CN 107141274 A CN107141274 A CN 107141274A
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- CN
- China
- Prior art keywords
- furfuryl alcohol
- removing column
- methylfurans
- methylfuran
- rectifying
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
- C07D307/02—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings
- C07D307/34—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
- C07D307/36—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with only hydrogen atoms or radicals containing only hydrogen and carbon atoms, directly attached to ring carbon atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
- C07D307/02—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings
- C07D307/34—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
- C07D307/38—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with substituted hydrocarbon radicals attached to ring carbon atoms
- C07D307/40—Radicals substituted by oxygen atoms
- C07D307/42—Singly bound oxygen atoms
- C07D307/44—Furfuryl alcohol
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
Abstract
The present invention provides a kind of extraction process of the methylfuran of furfuryl alcohol accessory substance 2, the problem of to solve the wasting of resources, pollution environment that existing technology is present.A kind of extraction process of the methylfuran of furfuryl alcohol accessory substance 2, including, the furfuryl alcohol hydrogenation liquid after hydrogenation is imported into weight-removing column rectifying and obtains furfuryl alcohol crude product；The importing lightness-removing column rectifying of furfuryl alcohol crude product is obtained into light component and furfuryl alcohol finished product；Light component is imported into 2 methylfuran rectifying column temperature rising reflux, 2 methylfuran finished products are produced after water is separated by water knockout drum.The extraction process of the methylfuran of furfuryl alcohol accessory substance 2 of the present invention is by increasing by 2 methylfuran rectifying columns, 2 methylfurans produced in furfuryl alcohol producing process are extracted by way of rectifying, reach criterion of acceptability, both the burning disposal of 2 methylfurans had been prevented, reduce the load of environmental protection treatment, the methylfuran of waste 2 is extracted again and sold as product, production cost is reduced.Having reached turns waste into wealth, and reduces the purpose of environmental pollution.
Description
Technical field
The invention belongs to extraction process technology field, more particularly to a kind of extraction work of furfuryl alcohol accessory substance 2- methylfurans
Skill.
Background technology
2- methylfurans, alias Si Er alkane, colourless liquid has ethereal odor, turns yellow extremely in atmosphere or under sunlight irradiation
Black.Water is slightly soluble in, ethanol, ether, acetone etc. is miscible in.For producing vitamin B1, chloroquine diphosphate and primaquine phosphate
Deng medicine, synthesis pyrethrin pesticide and essence and flavoring agent, are also good solvent.
2- methylfurans are mainly made by furfural catalytic hydrogenation, existing maturation process large-scale production domestic at present.Separately
Outside, in furfuryl alcohol commercial process, a small amount of accessory substance 2- methylfurans also occur, part 2- methylfurans are extracted
Disposed after out generally as impurity by methods such as burnings, both added the expense of 2- methylfurans waste processing, and handle
2- methylfurans are slatterned, and integrally add production cost, while also increasing the load of environmental protection treatment.Existing furfuryl alcohol pair
The problem of extraction process of product 2- methylfurans also has the wasting of resources, pollution environment.
Therefore, invent a kind of extraction process of furfuryl alcohol accessory substance 2- methylfurans and seem very necessary.
The content of the invention
In order to solve the above-mentioned technical problem, the present invention provides a kind of extraction process of furfuryl alcohol accessory substance 2- methylfurans, with
The problem of solving the extraction process wasting of resources, the pollution environment of existing furfuryl alcohol accessory substance 2- methylfurans.A kind of furfuryl alcohol by-product
The extraction process of thing 2- methylfurans, including,
Step one：Furfuryl alcohol hydrogenation liquid after hydrogenation is imported into weight-removing column rectifying and obtains furfuryl alcohol crude product；
Step 2：The importing lightness-removing column rectifying of furfuryl alcohol crude product is obtained into light component and furfuryl alcohol finished product；
Step 3：Light component is imported into 2- methylfuran rectifying column temperature rising reflux, produced after water is separated by water knockout drum
2- methylfuran finished products.
Further, in step one, the furfuryl alcohol hydrogenation liquid after furfuryl alcohol is hydrogenated with imports weight-removing column, by weight-removing column essence
Evaporate, furfuryl alcohol therein, 2- methylfurans, water enter crude product tank by weight-removing column tower top, catalyst, high boiling component pass through de- weight
Tower bottom of towe is drained.
Further, in step one, 100 to 150 DEG C of weight-removing column distillation process control weight-removing column tower top temperature, vacuum-
0.02 to -0.08MPa.
Further, in step 2, the furfuryl alcohol crude product in crude product tank is imported into lightness-removing column, by lightness-removing column rectifying, 2- first
Base furans, water enter light component tank by lightness-removing column tower top, and furfuryl alcohol is discharged by lightness-removing column bottom of towe, obtained into furfuryl alcohol rectifying column
Furfuryl alcohol finished product.
Further, in step 2, lightness-removing column distillation process controls column bottom temperature at 160 to 180 DEG C.
Further, in step 3, the light component in light component tank imports 2- methylfuran rectifying columns, is warming up to backflow,
Water is separated by water knockout drum in reflux course, backflow is then proceeded to, maintains the reflux for than 3：1 to 5：Between 1, control is de- light
Between 63.3 to 63.8 DEG C of column overhead temperatures, 2- methylfuran finished products are produced.
Further, in step 3, the constantly middle control sampling detection of reflux course.
Compared with prior art, the present invention has the advantages that：Due to a kind of furfuryl alcohol accessory substance 2- first of the present invention
The extraction process of base furans is widely used in extraction process technology field.Meanwhile, beneficial effects of the present invention are：
1st, The present invention reduces environmental pollution, environmental protection treatment pressure is reduced, environmental protection treatment difficulty is reduced.Light component in the past
All to be disposed as dangerous waste, after increase 2- methylfuran rectifying columns, accessory substance 2- methylfurans are changed into product, are used as dangerous waste
The simply least a portion of moisture content disposed, and without being handled again by methods such as burnings, simply at the biochemical sewage by routine
Reason can qualified discharge；
2nd, a kind of method that new 2- methylfurans finished product is extracted has been obtained；
3rd, production cost is reduced, is turned waste into wealth, the impurity 2- methylfurans that should be disposed are changed into and can sold
Product, add the source of profit, add a new profit growth point.
Brief description of the drawings
Fig. 1 is the process chart of the extraction process of the present invention.
Embodiment
The present invention is described further below in conjunction with accompanying drawing：
In figure：
Embodiment：
As shown in Figure 1
The present invention provides a kind of extraction process of furfuryl alcohol accessory substance 2- methylfurans, including,
S101：Furfuryl alcohol hydrogenation liquid after hydrogenation is imported into weight-removing column rectifying and obtains furfuryl alcohol crude product；
S102：The importing lightness-removing column rectifying of furfuryl alcohol crude product is obtained into light component and furfuryl alcohol finished product；
S103：Light component is imported into 2- methylfuran rectifying column temperature rising reflux, 2- is produced after water is separated by water knockout drum
Methylfuran finished product.
Further, in S101, the furfuryl alcohol hydrogenation liquid after furfuryl alcohol is hydrogenated with imports weight-removing column, by weight-removing column rectifying,
Furfuryl alcohol therein, 2- methylfurans, water enter crude product tank by weight-removing column tower top, and catalyst, high boiling component pass through weight-removing column
Bottom of towe is drained.Wherein 100 to 150 DEG C of weight-removing column distillation process control weight-removing column tower top temperature, vacuum -0.02 to -
0.08MPa。
Further, in S102, the furfuryl alcohol crude product in crude product tank is imported into lightness-removing column, by lightness-removing column rectifying, 2- methyl
Furans, water enter light component tank by lightness-removing column tower top, and furfuryl alcohol is discharged by lightness-removing column bottom of towe, and chaff is obtained into furfuryl alcohol rectifying column
Alcohol finished product, wherein lightness-removing column distillation process control column bottom temperature at 160 to 180 DEG C.
Further, in S103, the light component in light component tank imports 2- methylfuran rectifying columns, is warming up to backflow, returns
Water is separated by water knockout drum during stream, backflow is then proceeded to, maintains the reflux for than 3：1 to 5：Between 1, lightness-removing column is controlled
Between 63.3 to 63.8 DEG C of tower top temperature, 2- methylfuran finished products are produced.
Further, in S103, the constantly middle control sampling detection of reflux course.
The extraction process of the furfuryl alcohol accessory substance 2- methylfurans of the present invention is by increasing 2- methylfuran rectifying columns, furfuryl alcohol
The 2- methylfurans produced in production process are extracted by way of rectifying, reach criterion of acceptability, have both prevented 2- methyl
The burning disposal of furans, reduces the load of environmental protection treatment, and waste 2- methylfurans are extracted to enter to be on sale throughout as product
Sell, reduce production cost.Having reached turns waste into wealth, and reduces the purpose of environmental pollution.
Using technical solutions according to the invention, or those skilled in the art is under the inspiration of technical solution of the present invention,
Similar technical scheme is designed, and reaches above-mentioned technique effect, is to fall into protection scope of the present invention.
Claims (7)
1. a kind of extraction process of furfuryl alcohol accessory substance 2- methylfurans, it is characterised in that the furfuryl alcohol accessory substance 2- methylfurans
Extraction process includes,
Step one：Furfuryl alcohol hydrogenation liquid after hydrogenation is imported into weight-removing column rectifying and obtains furfuryl alcohol crude product；
Step 2：The importing lightness-removing column rectifying of furfuryl alcohol crude product is obtained into light component and furfuryl alcohol finished product；
Step 3：Light component is imported into 2- methylfuran rectifying column temperature rising reflux, 2- first is produced after water is separated by water knockout drum
Base furans finished product.
2. a kind of extraction process of furfuryl alcohol accessory substance 2- methylfurans as claimed in claim 1, it is characterised in that in step one
In, furfuryl alcohol hydrogenation liquid after furfuryl alcohol is hydrogenated with imports weight-removing column, by weight-removing column rectifying, furfuryl alcohol therein, 2- methylfurans,
Water enters crude product tank by weight-removing column tower top, and catalyst, high boiling component are drained by weight-removing column bottom of towe.
3. a kind of extraction process of furfuryl alcohol accessory substance 2- methylfurans as claimed in claim 2, it is characterised in that in step one
In, 100 to 150 DEG C of weight-removing column distillation process control weight-removing column tower top temperature, vacuum -0.02 to -0.08MPa.
4. a kind of extraction process of furfuryl alcohol accessory substance 2- methylfurans as claimed in claim 1, it is characterised in that in step 2
In, the furfuryl alcohol crude product in crude product tank is imported into lightness-removing column, by lightness-removing column rectifying, 2- methylfurans, water pass through lightness-removing column tower top
Into light component tank, furfuryl alcohol is discharged by lightness-removing column bottom of towe, and furfuryl alcohol finished product is obtained into furfuryl alcohol rectifying column.
5. a kind of extraction process of furfuryl alcohol accessory substance 2- methylfurans as claimed in claim 4, it is characterised in that in step 2
In, lightness-removing column distillation process controls column bottom temperature at 160 to 180 DEG C.
6. a kind of extraction process of furfuryl alcohol accessory substance 2- methylfurans as claimed in claim 1, it is characterised in that in step 3
In, the light component in light component tank imports 2- methylfuran rectifying columns, is warming up in backflow, reflux course and water is passed through water knockout drum
Separate, then proceed to backflow, maintain the reflux for than 3：1 to 5：Between 1,63.3 to 63.8 DEG C of control lightness-removing column tower top temperature it
Between, produce 2- methylfuran finished products.
7. a kind of extraction process of furfuryl alcohol accessory substance 2- methylfurans as claimed in claim 6, it is characterised in that in step 3
In, the constantly middle control sampling detection of reflux course.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710475961.1A CN107141274A (en) | 2017-06-21 | 2017-06-21 | A kind of extraction process of the methylfuran of furfuryl alcohol accessory substance 2 |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710475961.1A CN107141274A (en) | 2017-06-21 | 2017-06-21 | A kind of extraction process of the methylfuran of furfuryl alcohol accessory substance 2 |
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| CN107141274A true CN107141274A (en) | 2017-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710475961.1A Pending CN107141274A (en) | 2017-06-21 | 2017-06-21 | A kind of extraction process of the methylfuran of furfuryl alcohol accessory substance 2 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111606872A (en) * | 2020-05-25 | 2020-09-01 | 安徽金禾实业股份有限公司 | Continuous rectification method of 2-methylfuran |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101265245A (en) * | 2008-04-22 | 2008-09-17 | 天津大学 | Continuous distillation method and device for refining furfuryl alcohol |
| CN101863863A (en) * | 2010-06-28 | 2010-10-20 | 宏业生化股份有限公司 | Refining method for crude furfuryl alcohol |
| CN101880267A (en) * | 2010-06-28 | 2010-11-10 | 宏业生化股份有限公司 | Method for recycling 2-methyl furan from crude furfuryl alcohol |
-
2017
- 2017-06-21 CN CN201710475961.1A patent/CN107141274A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101265245A (en) * | 2008-04-22 | 2008-09-17 | 天津大学 | Continuous distillation method and device for refining furfuryl alcohol |
| CN101863863A (en) * | 2010-06-28 | 2010-10-20 | 宏业生化股份有限公司 | Refining method for crude furfuryl alcohol |
| CN101880267A (en) * | 2010-06-28 | 2010-11-10 | 宏业生化股份有限公司 | Method for recycling 2-methyl furan from crude furfuryl alcohol |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111606872A (en) * | 2020-05-25 | 2020-09-01 | 安徽金禾实业股份有限公司 | Continuous rectification method of 2-methylfuran |
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Application publication date: 20170908 |
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