CN109809982A - A kind of long-chain biatomic acid indudstrialized refining system and process for refining - Google Patents
A kind of long-chain biatomic acid indudstrialized refining system and process for refining Download PDFInfo
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Abstract
The invention discloses a kind of long-chain biatomic acid indudstrialized refining system and process for refining, the long-chain biatomic acid indudstrialized refining system, include: diacid fermentation flow container, crude product filter element, dissolution extraction unit, active carbon decoloring unit, active carbon filter element, crystalline element, vacuum filter unit, vacuum drying unit, packaging unit, binary acid recovery unit and solvent recovery unit, and further includes Solid state fermentation unit, treatment unit for waste water and exhaust gas treatment unit.Using long-chain biatomic acid indudstrialized refining system of the present invention and process for refining, binary acid yield reaches 90% or more, 99% or more total acid content in binary acid finished product, the equal qualified discharge of the three wastes, and binary acid annual output can reach kiloton.
Description
Technical field
The present invention relates to long carbochain biatomic acid preparation technical field more particularly to a kind of long-chain biatomic acid indudstrialized refining systems
System and process for refining.
Background technique
Long carbochain biatomic acid refers to the aliphatic dicarboxylic acid (abbreviation DCn) containing 10 or more carbon atoms in carbochain, including
Saturation and unsaturated dicarboxylic are a kind of fine chemical products for having important and extensive industrial use, are closed in chemical industry
At fine perfumery, high performance engineering plastics, high temperature dielectric, high-grade hot melt adhesive, cold resistant plasticizer, senior lubricant, special oil
The important source materials such as paint and coating.
There are many existing long-chain biatomic acid purification correlation technique document report, are divided into Aqueous phase and solvent method substantially.
Aqueous phase refers to that the purification extraction process of long-chain biatomic acid is completed in water phase entirely.Such as number of patent application
A kind of long-chain biatomic acid Aqueous phase purification purifying plant of biological fermentation process production, the device are referred in 201420265115.9
Including dissolving tank, the first filter, bleacher, filter, souring tank, the first centrifugal separator, high temperature and pressure water washing tank, second
The equipment such as centrifugal separator, screw feeder, flash distillation dryer, device sodium hydroxide solution precipitated impurities, active carbon decoloring, acid solution
It is redissolved after precipitation long-chain biatomic acid, crystallization, crushes drying.For another example biofermentation is raw in number of patent application 201110269422.5
Dissolving tank is added in the binary acid crude of production, and active carbon or resin are added into dissolving tank, adds deionized water, opens stirring and rises
After temperature heat preservation 30min, material is depressed into filter filtering, centrifugal drying obtains binary acid fine work after clear liquid decrease temperature crystalline.
Solvent method refers to that the purification of long-chain biatomic acid is completed in organic solvent.Currently, the organic solvent mainly used has
Alcohols, ethers and esters etc..As in number of patent application 201410354804.1 bio-fermented liquid after heating demulsification type through ceramics
Film, ultrafiltration membrance filter obtain ultrafiltrate, and enriching sulfuric acid adjusts material pH after ultrafiltrate is mixed heating and heat preservation with isoamyl alcohol, stirring mixes
It is stood after conjunction, filtering drying after extraction phase crystallisation by cooling is taken to obtain binary acid crystal.For another example number of patent application 201310391257.X
In provide a kind of long-chain biatomic acid continuous crystallisation process, this method need to be obtained first through microbial fermentation or chemical synthesis
The organic solution containing binary acid is obtained, decrease temperature crystalline then is carried out to organic solution, which is divided into three-level crystallization, often
Grade crystallization residence time >=1h, three-level crystallization apparatus are connected in series, and every grade of crystallizer is equipped with cooling device, first order crystallization
Crystallization temperature it is 1~10 DEG C lower than the Precipitation Temperature of binary acid in organic solvent, the second level crystallization crystallization temperature than first
Grade crystallization temperature is 5~15 DEG C low, and the crystallization temperature of third level crystallization is 5~70 DEG C lower than second level crystallization temperature, and crystal solution is last
By being dried to obtain binary acid.
Prior art Aqueous phase number of patent application 201420265115.9 and number of patent application 201110269422.5 operate
Condition is high temperature and pressure, has certain risk；Aqueous phase uses acid, aqueous slkali, the high requirements on the equipment, spent acid, alkali soluble simultaneously
Liquid also has a degree of pollution to environment, and often purity is low, appearance luster for the long-chain biatomic acid product of Aqueous phase preparation
And crystalline form is poor.Solvent method number of patent application 201410354804.1 uses intermittently operated, only the preparation side of laboratory scale
Method not can be used directly in industrialized production.Number of patent application 201310391257.X is using solvent method purification binary acid
Device report only focuses on crystallization section, not comprehensive enough, also not can be used directly in industrialized production.
Summary of the invention
The present invention is to solve the above problem in the prior art, proposes a kind of long-chain biatomic acid indudstrialized refining system and essence
Technique processed.
To achieve the above object, the invention adopts the following technical scheme:
The first aspect of the invention is to provide a kind of long-chain biatomic acid indudstrialized refining system, including sequentially connected two
First acid fermentation flow container, crude product filter element, dissolution extraction unit, active carbon decoloring unit, active carbon filter element, crystallization are single
Member, vacuum filter unit, vacuum drying unit and packaging unit, and further include:
Binary acid recovery unit, inlet connect the dissolution extraction unit by pipeline, and liquid outlet passes through pipeline
The crude product filter element is connected, carries out two for receiving the dissolution extraction unit water phase extracted, and to the water phase
First acid recovery, and the binary acid of recycling is delivered to the crude product filter element；With
Solvent recovery unit, inlet pass through pipeline respectively and connect the vacuum filter unit and vacuum drying unit,
Its liquid outlet connects the dissolution extraction unit by pipeline, for receiving the filtered solvent of the vacuum filter unit and institute
Solvent after stating vacuum drying unit drying, and the solvent delivery is carried out to apply recycling to dissolution extraction unit.
Further, the long-chain biatomic acid indudstrialized refining system, further includes:
Solid state fermentation unit is connect with the active carbon filter element, for receiving and processing the active carbon filtering
Active carbon filter cake after unit use.
Further, the long-chain biatomic acid indudstrialized refining system, further includes:
Treatment unit for waste water passes through pipeline respectively and connects the crude product filter element and the solvent recovery unit, uses
In the waste water for receiving and processing the crude product filter element and solvent recovery unit discharge.
Further, the long-chain biatomic acid indudstrialized refining system, further includes:
Exhaust gas treatment unit, passing through pipeline respectively, to connect the crude product filter element, dissolution extraction unit, active carbon de-
Color element, active carbon filter element, crystalline element, vacuum filter unit, vacuum drying unit, binary acid recovery unit and solvent
Recovery unit, for receiving and processing the crude product filter element, dissolution extraction unit, active carbon decoloring unit, active carbon mistake
It is generated in filter unit, crystalline element, vacuum filter unit, vacuum drying unit, binary acid recovery unit and solvent recovery unit
Exhaust gas.
Further, the long-chain biatomic acid indudstrialized refining system, the packaging unit and the vacuum drying are single
Member connection, for receiving and packing the long-chain biatomic acid finished product after the vacuum drying unit is dried.
The second aspect of the invention is to provide a kind of long-chain biatomic acid indudstrialized refining work using the refining system
Skill, comprising:
Step 1, the binary acid crude in diacid fermentation flow container is delivered to the crude product filter element and carries out filters pressing, two
First acidleach cake is sent to the dissolution extraction unit, and filtrate is sent to treatment unit for waste water and handled；
Step 2, binary acid filter cake is dissolved by the solvent in the dissolution extraction unit, and after washing extraction, layering, oil is mutually sent
Enter the active carbon decoloring unit, water phase is sent into the binary acid recovery unit and is recycled；
Step 3, oil mutually carries out active carbon decolorization in the active carbon decoloring unit, and the solution after decoloration is sent into institute
It states active carbon filter element and is filtered operation, filtered destainer is sent into the crystalline element and carries out crystallization treatment, filtering
Active carbon filter cake afterwards is sent to Solid state fermentation unit；
Step 4, the crystal solution after crystallization is sent into the vacuum filter unit and carries out vacuum filter, through vacuum filter and very
Solvent after sky is dry is sent into the solvent recovery unit and carries out refinement treatment and apply recycling；Filter cake is sent into the vacuum drying
Unit is dried in vacuo, and is obtained long-chain biatomic acid finished product and is sent packaging unit.
Further, in the long-chain biatomic acid indudstrialized refining technique, the crude product filter element and described two
What first acid recovery unit generated passes through pipeline to the exhaust gas treatment unit containing sour waste gas, discharges after alkali cleaning is handled；Institute
State dissolution extraction unit, active carbon decoloring unit, active carbon filter element, crystalline element, vacuum filter unit, vacuum drying list
The exhaust gas containing solvent generated in member and solvent recovery unit is by pipeline to the exhaust gas treatment unit, through condensation, activity
It is discharged after charcoal adsorption treatment.
Further, in the long-chain biatomic acid indudstrialized refining technique, binary acid crude described in step 1 is made a living
The dibasic acid fermentation liquor that object ferments；Solvent described in step 2 is alcohol, ether, and the alcohol, ether are selected from isoamyl alcohol, 1- amylalcohol, 1-
One or more of hexanol, ethylene glycol, butyl ether, amyl ether, methyl phenyl ethers anisole, phenetole.
Further, in the long-chain biatomic acid indudstrialized refining technique, binary acid filter cake described in step 2 contains
Moisture is 25~75%, and the operation temperature of the extraction is 50~170 DEG C, and operating pressure is 0.0~0.5MPaG.
Further, in the long-chain biatomic acid indudstrialized refining technique, the behaviour of decolorizing with activated carbon described in step 3
Making temperature is 50~170 DEG C, and operating pressure is 0.0~0.5MPaG, and active carbon dosage is 1~15%；The operation of the crystallization
Temperature is 0~140 DEG C, and operating pressure is 0.0~0.5MPaG.
The present invention by adopting the above technical scheme, compared with prior art, has the following technical effect that
Long-chain biatomic acid indudstrialized refining system provided by the invention, collection binary acid treating, binary acid recovery, solvent are applied
Recycling is integrated, and binary acid crude uses the dibasic acid fermentation liquor of biofermentation, and extractant uses alcohol, ether, is based on the purification
System and process for refining, binary acid yield reach 90% or more, and 99% or more total acid content in binary acid finished product, the three wastes are up to standard
Discharge, binary acid annual output can reach kiloton.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of long-chain biatomic acid indudstrialized refining system of the present invention.
Specific embodiment
The present invention is described in more detail below by specific embodiment, for a better understanding of the present invention,
But following embodiments are not intended to limit the scope of the invention.
Embodiment 1
As shown in Figure 1, the embodiment of the present invention provides a kind of long-chain biatomic acid indudstrialized refining system, including sequentially connected
Diacid fermentation flow container, crude product filter element, dissolution extraction unit, active carbon decoloring unit, active carbon filter element, crystallization are single
Member, vacuum filter unit and vacuum drying unit, and further include: binary acid recovery unit, inlet are connected by pipeline
The dissolution extraction unit, liquid outlet connect the crude product filter element by pipeline, for receiving the dissolution extraction list
Member water phase extracted, and binary acid recovery is carried out to the water phase, and the binary acid of recycling is delivered to the crude product mistake
Filter unit；And solvent recovery unit, inlet pass through pipeline respectively and connect the vacuum filter unit and vacuum drying unit,
Its liquid outlet connects the dissolution extraction unit by pipeline, for receiving the filtered solvent of the vacuum filter unit and institute
Solvent after stating vacuum drying unit drying, and the solvent delivery is carried out to apply recycling to dissolution extraction unit.
As shown in Figure 1, in the present embodiment, the long-chain biatomic acid indudstrialized refining system, further includes Solid state fermentation
Unit is connect with the active carbon filter element, for receiving and processing the activity after the active carbon filter element use
Charcoal filter cake.
As shown in Figure 1, in the present embodiment, the long-chain biatomic acid indudstrialized refining system, further includes wastewater treatment
Unit passes through pipeline respectively and connects the crude product filter element and the solvent recovery unit, described for receiving and processing
The waste water of crude product filter element and solvent recovery unit discharge.
As shown in Figure 1, in the present embodiment, the long-chain biatomic acid indudstrialized refining system, further includes exhaust-gas treatment
Unit passes through pipeline respectively and connects the crude product filter element, dissolution extraction unit, active carbon decoloring unit, active carbon mistake
Unit, crystalline element, vacuum filter unit, vacuum drying unit, binary acid recovery unit and solvent recovery unit are filtered, for connecing
Receive and handle the crude product filter element, dissolution extraction unit, active carbon decoloring unit, active carbon filter element, crystalline element,
The exhaust gas generated in vacuum filter unit, vacuum drying unit, binary acid recovery unit and solvent recovery unit.
It is and described in addition, as shown in Figure 1, the long-chain biatomic acid indudstrialized refining system further includes packaging unit
It is dried in vacuo unit connection, for receiving and packing the finished product after the vacuum drying unit is dried.
In the present embodiment, the crude product filter element is existing known filter；The dissolution extraction unit is existing
Known dissolution extraction equipment；The activity carbon decoloring unit and active carbon filter element are existing known active carbon decoloring
Equipment and active carbon filter；The crystalline element is existing known crystallizing tank；The vacuum filter unit is existing known
Control rotary drum seperator, the vacuum drying unit be vacuum belt drier；The packaging unit is existing known packet
Installation.
Embodiment 2
The present embodiment provides a kind of process for refining using the long-chain biatomic acid indudstrialized refining system, specifically include with
Lower step:
Step 1, the binary acid crude in diacid fermentation flow container is delivered to the crude product filter element and carries out filters pressing, two
First acidleach cake is sent to the dissolution extraction unit, and filtrate is sent to treatment unit for waste water and handled；
Step 2, binary acid filter cake is dissolved by the solvent in the dissolution extraction unit, and after washing extraction, layering, oil is mutually sent
Enter the active carbon decoloring unit, water phase is sent into the binary acid recovery unit and is recycled；
Step 3, oil mutually carries out active carbon decolorization in the active carbon decoloring unit, and the solution after decoloration is sent into institute
It states active carbon filter element and is filtered operation, filtered destainer is sent into the crystalline element and carries out crystallization treatment, filtering
Active carbon filter cake afterwards is sent to Solid state fermentation unit；
Step 4, the crystal solution after crystallization is sent into the vacuum filter unit and carries out vacuum filter, through vacuum filter and very
Solvent after sky is dry is sent into the solvent recovery unit and carries out refinement treatment and apply recycling；Filter cake is sent into the vacuum drying
Unit is dried in vacuo, and is obtained long-chain biatomic acid finished product and is sent packaging unit.
In the present embodiment, what the crude product filter element and the binary acid recovery unit generated passes through pipe containing sour waste gas
Road is delivered to the exhaust gas treatment unit, discharges after alkali cleaning is handled；The dissolution extraction unit, active carbon decoloring unit, work
Property charcoal filter element, crystalline element, vacuum filter unit, vacuum drying unit and solvent recovery unit in generate it is useless containing solvent
Gas is discharged after condensation, activated carbon adsorption processing by pipeline to the exhaust gas treatment unit.
In the present embodiment, binary acid crude described in step 1 is made a living the dibasic acid fermentation liquor that object ferments；Step 2
Described in solvent be alcohol, the alcohol be isoamyl alcohol.
In the present embodiment, the water capacity of binary acid filter cake described in step 2 is 50%.
In the present embodiment, the operation temperature of extraction described in step 2 is 95 DEG C, operating pressure 0.1MPaG.
In the present embodiment, the operation temperature of decolorizing with activated carbon described in step 3 is 105 DEG C, and operating pressure is
0.1MPaG, active carbon dosage are 8.5%.
In the present embodiment, the operation temperature of crystallization described in step 3 is 60 DEG C, operating pressure 0.1MPaG.
Embodiment 3
The application implementation based on the long-chain biatomic acid indudstrialized refining system and process for refining that the present embodiment provides a kind of
Example, the production scale of long-chain biatomic acid device are 100 tons/year, specifically includes the following steps:
Step 1,70 DEG C of phenetole solvents are added into dissolution extraction unit, the binary acid in diacid fermentation flow container is sent out
Zymotic fluid is filtered by crude product filter element, and filtrate is sent to treatment unit for waste water and handled；
Step 2, the filter cake of 60% water capacity obtained after filtering is transported in dissolution extraction unit, is sufficiently stirred, and is protected
90 DEG C of temperature in holding equipment, are completely dissolved binary acid in a solvent at heat preservation a period of time；After binary acid is completely dissolved, stop
Stirring, static a period of time, divides water；The water phase separated goes into binary acid recycling can to store；It is added into dissolution extraction equipment
70 DEG C of deionized waters are heated to temperature in dissolution extraction equipment and reach 90 DEG C, stop stirring after stirring a period of time, static one section
Time divides water, and the water phase separated goes into binary acid recycling can to store；
Step 3, it mutually send through the oil that step 2 extracts to active carbon decoloring unit, then adds 2.0% active carbon, be heated to
Active carbon decoloring cell temperature reaches 95 DEG C, and destainer is delivered to active carbon filter element after stirring a period of time and carries out activity
Charcoal filtering, while crystalline element is preheated to 90 DEG C, decoloration clear liquid is moved into, the binary acid solution controlled in crystallizing tank slowly drops
Temperature；
Step 4, when temperature is lower than 40 DEG C in crystallizer, crystal solution is conveyed into vacuum drum seperator and carries out solid-liquid
Separation, obtained filter cake, which send to vacuum belt drier to be dried, obtains refining long-chain biatomic acid finished product, and finished product is in packing machine
Interior pack；The solvent obtained after the filtrate and drying machine tail gas that filter is obtained by filtration are cooling is collected in solvent reclaimer,
It carries out refinement treatment and applies recycling.
Using long-chain biatomic acid indudstrialized refining system of the present invention and process for refining, binary acid yield reaches 90.0%
More than, 99.0% or more total acid content in binary acid finished product, the equal qualified discharge of the three wastes.
Embodiment 4
The present embodiment also provides one kind based on the long-chain biatomic acid indudstrialized refining system and purification work with embodiment 3
The Application Example of skill, only the production scale of long-chain biatomic acid device expands as 5000 tons/year, using long-chain of the present invention
Binary acid indudstrialized refining system and process for refining, binary acid yield reach 91.0% or more, total acid content in binary acid finished product
99.2% or more, the equal qualified discharge of the three wastes.
Embodiment 5
The present embodiment also provides one kind based on the long-chain biatomic acid indudstrialized refining system and purification work with embodiment 3
The Application Example of skill, only the production scale of long-chain biatomic acid device is revised as 3000 tons/year, and process condition is as follows:
In the present embodiment, binary acid crude described in step 1 is made a living the dibasic acid fermentation liquor that object ferments；Step 2
Described in solvent be alcohol, the alcohol be 1- hexanol；The water capacity of binary acid filter cake is 25%；The operation temperature of the extraction is 50
DEG C, operating pressure 0.0MPaG；The operation temperature of decolorizing with activated carbon described in step 3 is 50 DEG C, operating pressure 0.0MPaG,
Active carbon dosage is 1.0%；The operation temperature of the crystallization is 0 DEG C, operating pressure 0.0MPaG.
Using long-chain biatomic acid indudstrialized refining system of the present invention and process for refining, binary acid yield reaches 90.4%
More than, 99.0% or more total acid content in binary acid finished product, the equal qualified discharge of the three wastes.
Embodiment 6
The present embodiment also provides one kind based on the long-chain biatomic acid indudstrialized refining system and purification work with embodiment 3
The Application Example of skill, only the production scale of long-chain biatomic acid device is revised as 3000 tons/year, and process condition is as follows:
In the present embodiment, binary acid crude described in step 1 is made a living the dibasic acid fermentation liquor that object ferments；Step 2
Described in solvent be ether, the ether be amyl ether；The water capacity of binary acid filter cake is 75%；The operation temperature of the extraction is 170
DEG C, operating pressure 0.5MPaG；The operation temperature of decolorizing with activated carbon described in step 3 is 170 DEG C, and operating pressure is
0.5MPaG, active carbon dosage are 15.0%；The operation temperature of the crystallization is 140 DEG C, operating pressure 0.5MPaG.
Using long-chain biatomic acid indudstrialized refining system of the present invention and process for refining, binary acid yield reaches 90.2%
More than, 99.1% or more total acid content in binary acid finished product, the equal qualified discharge of the three wastes.
Specific embodiments of the present invention are described in detail above, but it is merely an example, the present invention is simultaneously unlimited
It is formed on particular embodiments described above.To those skilled in the art, any couple of present invention carries out equivalent modifications and
Substitution is also all among scope of the invention.Therefore, without departing from the spirit and scope of the invention made by equal transformation and
Modification, all should be contained within the scope of the invention.
Claims (9)
1. a kind of long-chain biatomic acid indudstrialized refining system, which is characterized in that including sequentially connected diacid fermentation flow container, slightly
Product filter element, dissolution extraction unit, active carbon decoloring unit, active carbon filter element, crystalline element, vacuum filter unit,
It is dried in vacuo unit and packaging unit, and further include:
Binary acid recovery unit, inlet connect the dissolution extraction unit by pipeline, and liquid outlet is connected by pipeline
The crude product filter element carries out binary acid for receiving the dissolution extraction unit water phase extracted, and to the water phase
Recycling, and the binary acid of recycling is delivered to the crude product filter element；With
Solvent recovery unit, inlet pass through pipeline respectively and connect the vacuum filter unit and vacuum drying unit, go out
Liquid mouth connects the dissolution extraction unit by pipeline, for receiving the filtered solvent of the vacuum filter unit and described true
Solvent after empty drying unit is dry, and the solvent delivery is carried out to apply recycling to dissolution extraction unit.
2. long-chain biatomic acid indudstrialized refining system according to claim 1, which is characterized in that further include:
Solid state fermentation unit is connect with the active carbon filter element, for receiving and processing the active carbon filter element
Active carbon filter cake after use.
3. long-chain biatomic acid indudstrialized refining system according to claim 1, which is characterized in that further include:
Treatment unit for waste water passes through pipeline and connects the crude product filter element and the solvent recovery unit, respectively for connecing
Receive and handle the waste water of the crude product filter element and solvent recovery unit discharge.
4. long-chain biatomic acid indudstrialized refining system according to claim 1, which is characterized in that further include:
Exhaust gas treatment unit passes through pipeline respectively and connects the crude product filter element, dissolution extraction unit, active carbon decoloring list
Member, active carbon filter element, crystalline element, vacuum filter unit, vacuum drying unit, binary acid recovery unit and solvent recovery
Unit, for receiving and processing the crude product filter element, dissolution extraction unit, active carbon decoloring unit, active carbon filtering list
It is generated in member, crystalline element, vacuum filter unit, vacuum drying unit, binary acid recovery unit and solvent recovery unit useless
Gas.
5. a kind of long-chain biatomic acid indudstrialized refining technique using any one of Claims 1 to 4 refining system, feature
It is, comprising:
Step 1, the binary acid crude in diacid fermentation flow container is delivered to the crude product filter element and carries out filters pressing, binary acid
Filter cake is sent to the dissolution extraction unit, and filtrate is sent to treatment unit for waste water and handled；
Step 2, binary acid filter cake is dissolved by the solvent in the dissolution extraction unit, and after washing extraction, layering, oil is mutually sent into institute
Active carbon decoloring unit is stated, water phase is sent into the binary acid recovery unit and is recycled；
Step 3, oil mutually carries out active carbon decolorization in the active carbon decoloring unit, and the solution after decoloration is sent into the work
Property charcoal filter element be filtered operation, filtered destainer is sent into the crystalline element and carries out crystallization treatment, filtered
Active carbon filter cake is sent to Solid state fermentation unit；
Step 4, the crystal solution after crystallization is sent into the vacuum filter unit and carries out vacuum filter, it is dry through vacuum filter and vacuum
Solvent after dry is sent into the solvent recovery unit and carries out refinement treatment and apply recycling；Filter cake is sent into the vacuum drying unit
It is dried in vacuo, obtains long-chain biatomic acid finished product and send packaging unit.
6. long-chain biatomic acid indudstrialized refining technique according to claim 5, which is characterized in that the crude product filter element
Pass through pipeline to the exhaust gas treatment unit, after alkali cleaning is handled containing sour waste gas with what the binary acid recovery unit generated
Discharge；It is the dissolution extraction unit, active carbon decoloring unit, active carbon filter element, crystalline element, vacuum filter unit, true
The exhaust gas containing solvent generated in empty drying unit and solvent recovery unit passes through pipeline to the exhaust gas treatment unit, through cold
It is discharged after solidifying, activated carbon adsorption processing.
7. long-chain biatomic acid indudstrialized refining technique according to claim 5, which is characterized in that binary described in step 1
Acid crude is the dibasic acid fermentation liquor that biofermentation obtains；Solvent described in step 2 is alcohol, ether, and the alcohol, ether are selected from isoamyl
One or more of alcohol, 1- amylalcohol, 1- hexanol, ethylene glycol, butyl ether, amyl ether, methyl phenyl ethers anisole, phenetole.
8. long-chain biatomic acid indudstrialized refining technique according to claim 5, which is characterized in that binary described in step 2
The water capacity of acidleach cake is 25~75%, and the operation temperature of the extraction is 50~170 DEG C, operating pressure is 0.0~
0.5MPaG。
9. long-chain biatomic acid indudstrialized refining technique according to claim 5, which is characterized in that activity described in step 3
The operation temperature of carbon decoloration is 50~170 DEG C, and operating pressure is 0.0~0.5MPaG, and active carbon dosage is 1~15%；It is described
The operation temperature of crystallization is 0~140 DEG C, and operating pressure is 0.0~0.5MPaG.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118324625A (en) * | 2023-12-15 | 2024-07-12 | 北京佰依源生物科技有限公司 | Refining and purifying method for producing long-chain dibasic acid through biological fermentation |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102911036A (en) * | 2011-08-01 | 2013-02-06 | 中国石油化工股份有限公司 | Method for obtaining high pure dicarboxylic acid |
| CN104591997A (en) * | 2013-11-03 | 2015-05-06 | 中国石油化工股份有限公司 | Extraction and refining method for long-chain dicarboxylic acid |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102911036A (en) * | 2011-08-01 | 2013-02-06 | 中国石油化工股份有限公司 | Method for obtaining high pure dicarboxylic acid |
| CN104591997A (en) * | 2013-11-03 | 2015-05-06 | 中国石油化工股份有限公司 | Extraction and refining method for long-chain dicarboxylic acid |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118324625A (en) * | 2023-12-15 | 2024-07-12 | 北京佰依源生物科技有限公司 | Refining and purifying method for producing long-chain dibasic acid through biological fermentation |
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