CN107721952A - furfural preparation technology - Google Patents
furfural preparation technology Download PDFInfo
- Publication number
- CN107721952A CN107721952A CN201711196494.5A CN201711196494A CN107721952A CN 107721952 A CN107721952 A CN 107721952A CN 201711196494 A CN201711196494 A CN 201711196494A CN 107721952 A CN107721952 A CN 107721952A
- Authority
- CN
- China
- Prior art keywords
- furfural
- corncob
- boiling
- ethanedioic acid
- delivered
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
- C07D307/46—Doubly bound oxygen atoms, or two oxygen atoms singly bound to the same carbon atom
- C07D307/48—Furfural
-
- 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
- C07D307/46—Doubly bound oxygen atoms, or two oxygen atoms singly bound to the same carbon atom
- C07D307/48—Furfural
- C07D307/50—Preparation from natural products
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Furfural preparation technology, corncob is crushed, while prepares ethanedioic acid solution, and the ethanedioic acid solution prepared and the corncob crushed are added in agitator and are well mixed；Then mixture is delivered to and boiling is carried out in hydrolyzer, the residue obtained after boiling is recycled as boiler oil, and gas caused by boiling is condensed by condenser, and condensed fluid is delivered in primary distillation tower and is dehydrated, and obtains the chaff aldehyde of mass content 90% ~ 92%；Chaff aldehyde adds negative pressure rectifying column, while adds sodium hydroxide solution, and negative pressure rectifying obtains product furfural.The present invention prepares furfural using corncob and ethanedioic acid, will not produce sulfur dioxide when obtained residue is as boiler oil substantially, environmental pollution is small；Furfural sterling acidity prepared by present invention process is low, can reach 0.008mol/L, and purity is not less than 99%, and moisture is less than 0.15%, and yield is not less than 97%, and acidity has the advantages of environmental protection, high income, steady quality in 0.008mol/ or so.
Description
Technical field
The present invention relates to furfural production technical field, and in particular to a kind of furfural preparation technology.
Background technology
China is furfural production big country, from the furfural production atrophy of developed country in terms of the trend of development, furfural production center of gravity
Developing country is transferred to, China's production capacity accounts for world's furfural production ability 80%, and is increasingly becoming furfural and its converted products most
Large outlet state and use state.
The conventional production methods of furfural are that corncob, sulfuric acid prepare furfural at present, when obtained residue is as boiler oil
Substantial amounts of sulfur dioxide is produced, big for environment pollution, due to attention of the country to environmental protection, this production method is slowly eliminated..
The content of the invention
The invention provides a kind of furfural preparation technology, and furfural is prepared to solve corncob existing for prior art and sulfuric acid
Caused residual burning produces the problem of a large amount of sulfur dioxide are big for environment pollution.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of furfural preparation technology, using corncob as raw material, by producing furfural, specific work with ethanedioic acid and sodium hydroxide reaction
Skill step is as follows：
（1）Corncob is crushed, while prepares ethanedioic acid solution, the ethanedioic acid solution prepared and the corncob crushed are added
Enter in agitator and be well mixed；
（2）Then mixture to be delivered to and boiling is carried out in hydrolyzer, the residue obtained after boiling recycles as boiler oil,
Gas is condensed by condenser caused by boiling, and condensed fluid is delivered in primary distillation tower and is dehydrated, and obtains the thick of mass content 90% ~ 92%
Furfural；
（3）Chaff aldehyde adds negative pressure rectifying column, while adds sodium hydroxide solution, and negative pressure rectifying obtains product furfural.
The present invention prepares furfural using corncob and ethanedioic acid, will not be produced substantially when obtained residue is as boiler oil
Sulfur dioxide, environmental pollution are small；Furfural sterling acidity prepared by present invention process is low, can reach 0.008mol/L, purity is not
Less than 99%, moisture is less than 0.15%, and yield is not less than 97%, acidity in 0.008mol/ or so, have environmental protection, high income,
The advantages of steady quality.
Embodiment
A kind of furfural preparation technology, using corncob as raw material, by producing furfural, tool with ethanedioic acid and sodium hydroxide reaction
Body technology step is as follows：
（1）Corncob is crushed, while prepares ethanedioic acid solution, the ethanedioic acid solution prepared and the corncob crushed are added
Enter in agitator and be well mixed；
（2）Then mixture to be delivered to and boiling is carried out in hydrolyzer, the residue obtained after boiling recycles as boiler oil,
Gas is condensed by condenser caused by boiling, and condensed fluid is delivered in primary distillation tower and is dehydrated, and obtains the thick of mass content 90% ~ 92%
Furfural；
（3）Chaff aldehyde adds negative pressure rectifying column, while adds sodium hydroxide solution, and negative pressure rectifying obtains product furfural.
The present invention prepares furfural using corncob and ethanedioic acid, will not be produced substantially when obtained residue is as boiler oil
Sulfur dioxide, environmental pollution are small；Furfural sterling acidity prepared by present invention process is low, can reach 0.008mol/L, purity is not
Less than 99%, moisture is less than 0.15%, and yield is not less than 97%, acidity in 0.008mol/ or so, have environmental protection, high income,
The advantages of steady quality.
Claims (1)
- A kind of 1. furfural preparation technology, it is characterized in that using corncob as raw material, by being produced with ethanedioic acid and sodium hydroxide reaction Furfural, concrete technology step are as follows：（1）Corncob is crushed, while prepares ethanedioic acid solution, the ethanedioic acid solution prepared and the corncob crushed are added Enter in agitator and be well mixed；（2）Then mixture to be delivered to and boiling is carried out in hydrolyzer, the residue obtained after boiling recycles as boiler oil, Gas is condensed by condenser caused by boiling, and condensed fluid is delivered in primary distillation tower and is dehydrated, and obtains the thick of mass content 90% ~ 92% Furfural；Chaff aldehyde adds negative pressure rectifying column, while adds sodium hydroxide solution, and negative pressure rectifying obtains product furfural.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711196494.5A CN107721952A (en) | 2017-11-25 | 2017-11-25 | furfural preparation technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711196494.5A CN107721952A (en) | 2017-11-25 | 2017-11-25 | furfural preparation technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107721952A true CN107721952A (en) | 2018-02-23 |
Family
ID=61219353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711196494.5A Pending CN107721952A (en) | 2017-11-25 | 2017-11-25 | furfural preparation technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107721952A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108727311A (en) * | 2018-05-14 | 2018-11-02 | 安徽理工大学 | A kind of furfural production new process of environmental protection |
| CN115043797A (en) * | 2022-02-22 | 2022-09-13 | 山东一诺生物质材料有限公司 | Production process of furfural |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB850367A (en) * | 1955-10-01 | 1960-10-05 | Cellulose Polymeres Et Derives | Process for the treatment of vegetable substances |
| CN101492700A (en) * | 2009-03-05 | 2009-07-29 | 王建设 | Intensive processing method for stalk articles or agricultural castoff |
| US20110144359A1 (en) * | 2009-12-16 | 2011-06-16 | Heide Evert Van Der | Method for producing furfural from lignocellulosic biomass material |
| CN102516209A (en) * | 2011-10-20 | 2012-06-27 | 清华大学 | Method for coproducing furfural, ethanol and lignin from corncob |
| CN103261184A (en) * | 2010-12-21 | 2013-08-21 | 纳幕尔杜邦公司 | Process for furfural production from biomass |
| CN104557814A (en) * | 2014-09-30 | 2015-04-29 | 刘婕 | Furfural production process |
| CN105198842A (en) * | 2015-10-23 | 2015-12-30 | 上海毅知实业有限公司 | Clean production line for furfural and production method of furfural |
-
2017
- 2017-11-25 CN CN201711196494.5A patent/CN107721952A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB850367A (en) * | 1955-10-01 | 1960-10-05 | Cellulose Polymeres Et Derives | Process for the treatment of vegetable substances |
| CN101492700A (en) * | 2009-03-05 | 2009-07-29 | 王建设 | Intensive processing method for stalk articles or agricultural castoff |
| US20110144359A1 (en) * | 2009-12-16 | 2011-06-16 | Heide Evert Van Der | Method for producing furfural from lignocellulosic biomass material |
| CN103261184A (en) * | 2010-12-21 | 2013-08-21 | 纳幕尔杜邦公司 | Process for furfural production from biomass |
| CN102516209A (en) * | 2011-10-20 | 2012-06-27 | 清华大学 | Method for coproducing furfural, ethanol and lignin from corncob |
| CN104557814A (en) * | 2014-09-30 | 2015-04-29 | 刘婕 | Furfural production process |
| CN105198842A (en) * | 2015-10-23 | 2015-12-30 | 上海毅知实业有限公司 | Clean production line for furfural and production method of furfural |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108727311A (en) * | 2018-05-14 | 2018-11-02 | 安徽理工大学 | A kind of furfural production new process of environmental protection |
| CN115043797A (en) * | 2022-02-22 | 2022-09-13 | 山东一诺生物质材料有限公司 | Production process of furfural |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180223 |