CN212881194U - L-tyrosine splitter - Google Patents
L-tyrosine splitter Download PDFInfo
- Publication number
- CN212881194U CN212881194U CN202021852643.6U CN202021852643U CN212881194U CN 212881194 U CN212881194 U CN 212881194U CN 202021852643 U CN202021852643 U CN 202021852643U CN 212881194 U CN212881194 U CN 212881194U
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- China
- Prior art keywords
- tyrosine
- fermentation liquor
- slurry
- ploughing
- groove body
- Prior art date
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- OUYCCCASQSFEME-QMMMGPOBSA-N L-tyrosine Chemical compound OC(=O)[C@@H](N)CC1=CC=C(O)C=C1 OUYCCCASQSFEME-QMMMGPOBSA-N 0.000 title claims abstract description 140
- 229960004441 tyrosine Drugs 0.000 title claims abstract description 73
- 238000000926 separation method Methods 0.000 claims abstract description 23
- 239000007788 liquid Substances 0.000 claims abstract description 14
- 239000002002 slurry Substances 0.000 claims description 46
- 238000004062 sedimentation Methods 0.000 claims 1
- 239000013078 crystal Substances 0.000 abstract description 44
- 238000000855 fermentation Methods 0.000 abstract description 33
- 230000004151 fermentation Effects 0.000 abstract description 33
- 238000001556 precipitation Methods 0.000 abstract description 26
- 241000588724 Escherichia coli Species 0.000 abstract description 12
- 239000006285 cell suspension Substances 0.000 abstract description 9
- 238000005336 cracking Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 210000003141 lower extremity Anatomy 0.000 abstract description 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 15
- 239000000243 solution Substances 0.000 description 13
- 238000000034 method Methods 0.000 description 9
- OUYCCCASQSFEME-UHFFFAOYSA-N tyrosine Natural products OC(=O)C(N)CC1=CC=C(O)C=C1 OUYCCCASQSFEME-UHFFFAOYSA-N 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 239000002028 Biomass Substances 0.000 description 7
- 210000004027 cell Anatomy 0.000 description 7
- 238000007599 discharging Methods 0.000 description 7
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 6
- 239000012670 alkaline solution Substances 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- 239000003929 acidic solution Substances 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 239000000706 filtrate Substances 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 2
- 241001052560 Thallis Species 0.000 description 2
- 235000011114 ammonium hydroxide Nutrition 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229940024606 amino acid Drugs 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000006037 cell lysis Effects 0.000 description 1
- 210000003850 cellular structure Anatomy 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012065 filter cake Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000010353 genetic engineering Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005374 membrane filtration Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Apparatus Associated With Microorganisms And Enzymes (AREA)
Abstract
The utility model provides a L-tyrosine splitter, the splitter is the precipitation tank that circles round that the major component is constituteed by cylindrical groove body, conical tank bottom and the thick liquid machine of ploughing, wherein, be equipped with the feed inlet on the cylindrical groove body, the top edge of cylindrical groove body is equipped with the cross support frame that is used for supporting stable thick liquid machine of ploughing, it is connected with this cross support frame that the thick liquid machine upper portion of ploughing is the motor, middle part pivot through the bearing, and the pivot lower part sets up the auger, and pivot lower part both sides set up the paddle, cylindrical groove body lower limb and conical tank bottom fixed connection, the bottom of conical tank bottom sets up the bin outlet; in the separation process, fermentation liquor tangentially enters a rotary precipitation tank at a high speed, and L-tyrosine crystal pulp and cell suspension are subjected to solid-liquid separation, so that the fermentation liquor containing L-tyrosine of escherichia coli is not subjected to cell cracking, the difficulty that the fermentation liquor is difficult to continue to operate due to overlarge viscosity of the fermentation liquor after the cell cracking is effectively avoided, and the separation effect is good.
Description
Technical Field
The utility model belongs to the technical field of amino acid separation and extraction technique and specifically relates to a L-tyrosine splitter.
Background
Tyrosine (Tyrosine; Tyr) is also known: 2-amino-3-p-hydroxyphenylpropionic acid, as white crystalline powder, crystallized from water as needles or platelets. Tyrosine has wide application in the industries of medicine, food, chemical industry and the like.
At present, few reports of extracting L-tyrosine from fermentation liquor at home and abroad are available. Ranjan Patnaik, 2008, reported a process for extracting L-tyrosine from a fermentation broth containing 55 g/L-tyrosine, biomass (OD)550) Approximately 65. Firstly, adding sodium hydroxide into fermentation liquor to adjust the pH value to 11.5, cracking the escherichia coli thalli and simultaneously dissolving L-tyrosine, then carrying out membrane filtration to collect filtrate, and adding acid into the filtrate to adjust the filtrate to the L-tyrosine crystal. However, when the method is used for extraction experiments, if the thalli are cracked by sodium hydroxide, cell components enter fermentation liquor, and further, the fermentation liquor has overlarge viscosity and is difficult to continue to operate; the main reason for this is that the biomass of the strain in the fermentation broth is too large (about twice that reported by Ranjan Patnaik). Therefore, the extraction of L-tyrosine from the fermentation broth does not allow cell lysis. If the tyrosine crystal is directly filtered, the tyrosine crystal is very compact and is easy to form a filter cake,it is difficult to continue the filtration.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing a L-tyrosine splitter.
In order to solve the technical problem, the technical scheme of the utility model is that:
the utility model provides a L-tyrosine splitter, is the precipitation tank that circles round that comprises cylindrical tank body, conical tank bottom and the thick liquid machine of ploughing as the essential element, wherein, be equipped with the feed inlet on the cylindrical tank body, the top edge of cylindrical tank body is equipped with the cross support frame that is used for supporting stable thick liquid machine of ploughing, it is connected with this cross support frame that motor, middle part pivot are passed through the bearing for the thick liquid machine upper portion of ploughing, and the pivot lower part sets up the auger, and pivot lower part both sides set up the paddle, cylindrical tank body lower limb and conical tank bottom fixed connection, the bottom of conical tank bottom sets up the bin outlet.
The slurry plowing machine is used for auxiliary discharging, wherein the paddle is used for loosening the crystal slurry, and the auger is used for propelling the crystal slurry to discharge materials to the discharging opening.
Preferably, in the L-tyrosine separation device, the feed inlet is a tangential feed inlet, and the feed liquid enters through the feed inlet tangentially.
Preferably, in the L-tyrosine separating apparatus, the paddle is movable up and down along the rotation shaft.
The L-tyrosine separation method using the L-tyrosine separation equipment comprises the following specific steps:
(1) the fermentation liquid of the Escherichia coli containing the L-tyrosine tangentially enters the rotary precipitation tank at a high speed through a feed inlet of the rotary precipitation tank by a pump or other power;
(2) the fermentation liquor rotates at a high speed in the rotary precipitation tank, the L-tyrosine crystals with high density gradually settle and gather at the bottom of the conical tank under the action of gravity and centrifugal force, meanwhile, crystal pulp is formed due to the fact that the L-tyrosine crystals have high water content (not less than 60%) and the crystals are fine, and escherichia coli cells with low density can be suspended in the fermentation liquor to form cell suspension which is distributed on the upper layer of the crystal pulp;
(3) discharging the cell suspension by a pump or other methods until the L-tyrosine crystals are settled; discharging the crystal mush from a discharge port for downstream refining, wherein the crystal mush has poor fluidity, discharging is assisted by rotation of a slurry ploughing machine, and the crystal mush can be washed by water, an acid solution or an alkaline solution when necessary.
Preferably, in the method for separating L-tyrosine, the speed of the fermentation liquor of the Escherichia coli containing the L-tyrosine tangentially entering the rotary precipitation tank is not less than 9 m/s.
Preferably, in the method for separating L-tyrosine, the pH of the alkaline solution is not less than 11.5.
Preferably, in the method for separating L-tyrosine, the pH of the acid solution is less than or equal to 0.5.
L-tyrosine is soluble in an alkaline solution (when the pH is not less than 11.5) or an acidic solution (when the pH is not more than 0.5) at normal temperature, and the tyrosine is dissolved in the solution and has good fluidity.
Has the advantages that:
according to the L-tyrosine separation equipment, the fermentation liquor tangentially enters the rotary precipitation tank at a high speed, the L-tyrosine crystal pulp and the cell suspension are subjected to solid-liquid separation, the cell suspension is discharged from the upper part, and the L-tyrosine crystal pulp is separated from the bottom of the rotary precipitation tank with the aid of the pulp ploughing machine.
The separation method of the L-tyrosine by using the L-tyrosine separation equipment ensures that the Escherichia coli fermentation liquor containing the L-tyrosine directly enters the rotary precipitation tank to realize the separation of the cells and the L-tyrosine without cell cracking, effectively avoids the difficulty that the fermentation liquor is difficult to continue to operate due to overlarge viscosity after the cells are cracked, and has good separation effect and low separation cost.
Drawings
FIG. 1 is a schematic structural view of an L-tyrosine separation apparatus according to the present invention;
FIG. 2 is a top view of the L-tyrosine separation apparatus of the present invention;
FIG. 3 is a schematic structural view of a slurry plowing machine of the L-tyrosine separation device of the present invention;
FIG. 4 is a schematic diagram of the separation and application of fermentation liquid in the L-tyrosine separation device of the present invention.
In the figure: 1-cylindrical tank body 2-conical tank bottom 3-slurry ploughing machine 1-1-feed inlet
1-2-support frame 2-1-discharge opening 3-1-motor 3-2-rotating shaft
3-3-bearing 3-4-blade 3-5-auger
Detailed Description
Example 1
As shown in fig. 1-3, the L-tyrosine separation device is a rotary precipitation tank composed of a cylindrical tank body 1, a conical tank bottom 2 and a slurry plowing machine 3 as main components, wherein the cylindrical tank body is provided with a tangential feed port 1-1, feed liquid enters tangentially through the feed port, the upper edge of the cylindrical tank body is provided with a cross support frame 1-2 for supporting and stabilizing the slurry plowing machine, the upper part of the slurry plowing machine is provided with a motor 3-1, a middle rotating shaft 3-2 is connected with the cross support frame through a bearing 3-3, the lower part of the rotating shaft is provided with an auger 3-5, two sides of the lower part of the rotating shaft are provided with paddles 3-4 which can move up and down along the rotating shaft, the slurry plowing machine is used for auxiliary discharge, wherein the paddles are used for loosening crystal slurry, and the auger; the lower edge of the cylindrical groove body is fixedly connected with the bottom of the conical groove, and the bottom end of the bottom of the conical groove is provided with a discharge outlet 2-1.
Example 2
A method for separating L-tyrosine from fermentation liquor is shown in figure 4, and comprises the following specific steps:
(1) the discharge port 2-1 is closed, and the pulp ploughing machine 3 rises to the top end; pumping the fermentation liquid of the Escherichia coli containing L-tyrosine into a feed inlet 1-1 of a rotary precipitation tank, and tangentially feeding into the rotary precipitation tank at a high speed of about 9 m/s; the fermentation liquor is obtained by utilizing an L-tyrosine genetic engineering bacterium, a method for producing L-tyrosine by using the same and the strain and the method in application (application number: CN111004761A), the concentration of the L-tyrosine in the fermentation liquor is 42.0g/L, the biomass of escherichia coli is 42.7g/L, the rest components in the fermentation liquor are waste water, and the waste water contains a small amount of soluble substances, which is shown in the following table:
(2) after the fermentation liquor tangentially enters the rotary precipitation tank at the speed of 9m/s, the fermentation liquor rotates at a high speed in the rotary precipitation tank. The L-tyrosine crystals with higher density in the fermentation solution gradually settle and gather at the bottom of the conical groove under the action of gravity, friction and centrifugal force, and simultaneously, crystal slurry can be formed due to the fact that the L-tyrosine crystals have higher water content (not less than 60%) and are fine; because the cell density of the escherichia coli is small, the escherichia coli can be suspended in the fermentation liquor to form cell suspension which is distributed on the upper layer of the crystal plasm;
(3) when the L-tyrosine crystal is settled (after the feeding is stopped for about half an hour), pumping the cell suspension from the upper part by using a centrifugal pump, and treating the wastewater; and opening a valve of a discharge port 2-1, discharging the crystal slurry from the discharge port 2-1 for downstream refining, and starting a slurry ploughing machine 3 to rotate at a low speed (the rotating speed is 0.3r/min) and slowly descend to assist in discharging due to poor flowability of the crystal slurry.
When the L-tyrosine crystal slurry can not be continuously discharged by only depending on the slurry plowing machine, the crystal slurry remained on the inner walls of the slurry plowing machine and the rotary precipitation tank is washed by water, and the fluidity of the crystal slurry can be improved.
Through determination: the volume of the separated L-tyrosine crystal slurry (not dried) accounts for about 25 percent of the total volume of the fermentation liquor, and the water content is about 60 percent; wherein the concentration of L-tyrosine is 107.1g/L, and the biomass is 26.3 g/L; after drying, the purity of the L-tyrosine is 90 percent, and the yield is 85 percent. The volume of the cell suspension was 75% of the total volume of the fermentation broth, in which the biomass (E.coli cells) was 46.2g/L and the L-tyrosine was 6.1 g/L.
Example 3
Refer to example 2.
The difference lies in that: the speed of the fermentation liquor entering the rotary precipitation tank tangentially is 12 m/s.
When the L-tyrosine crystal slurry can not be discharged continuously by only depending on the slurry plowing machine, the crystal slurry remained on the inner walls of the slurry plowing machine and the rotary precipitation tank is washed by hydrochloric acid solution (pH is 0.5) and flows out of the precipitation tank.
Through determination: the volume of the separated L-tyrosine crystal slurry (not dried) accounts for about 25 percent of the total volume of the fermentation liquor, and the water content is about 60 percent; wherein the concentration of L-tyrosine is 109.2g/L, and the biomass is 28.3 g/L; after drying, the purity of the L-tyrosine is 88.2 percent, and the yield is 87.9 percent. The volume of the cell suspension was 75% of the total volume of the fermentation broth, with a biomass (E.coli cells) of 44.7g/L and L-tyrosine of 3.5 g/L.
Example 4
Refer to example 2.
When the discharge of the L-tyrosine crystal slurry cannot be continued by only depending on the slurry plowing machine, the crystal slurry remained on the inner walls of the slurry plowing machine and the rotary precipitation tank is washed by a sulfuric acid solution (pH is 0.5). Most of the crystals dissolved in the sulfuric acid solution and flowed out of the precipitation tank.
Example 4
Refer to example 2.
When the discharge of the L-tyrosine crystal slurry cannot be continued by only depending on the slurry plowing machine, the crystal slurry remained on the inner wall of the slurry plowing machine and the rotary precipitation tank is washed by a sodium hydroxide solution (pH is 11.5). Most of the crystals were dissolved in the sodium hydroxide solution and flowed out of the precipitation tank.
Example 5
Refer to example 2.
When the discharge of the L-tyrosine crystal slurry can not be continued by only depending on the slurry ploughing machine, the crystal slurry remained on the inner walls of the slurry ploughing machine and the rotary precipitation tank is washed by ammonia water (pH is 11.5). Most of the crystals were dissolved in ammonia and flowed out of the precipitation tank.
In conclusion, when the L-tyrosine crystal slurry can not be discharged continuously by only depending on the slurry ploughing machine, the crystal slurry remained on the inner walls of the slurry ploughing machine and the rotary precipitation tank can be washed by water, acid or alkali solution. The alkaline solution can be sodium hydroxide solution or ammonia water; the acidic solution may be a hydrochloric acid or sulfuric acid solution. The L-tyrosine is soluble in an alkaline solution (when the pH value is not less than 11.5) or an acidic solution (when the pH value is not more than 0.5) at normal temperature, and the tyrosine is dissolved in the solution, so that the fluidity is good, and the L-tyrosine crystal slurry remained on the inner wall can be washed more conveniently.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (3)
1. An L-tyrosine separation device, which is characterized in that: the rotary sedimentation tank is composed of a cylindrical tank body, a conical tank bottom and a slurry ploughing machine as main components, wherein a feed inlet is formed in the cylindrical tank body, a cross support frame used for supporting stable slurry ploughing machine is arranged at the upper edge of the cylindrical tank body, the upper portion of the slurry ploughing machine is a motor, a middle rotating shaft is connected with the cross support frame through a bearing, an auger is arranged at the lower portion of a rotating shaft, paddles are arranged on two sides of the lower portion of the rotating shaft, the lower edge of the cylindrical tank body is fixedly connected with the conical tank bottom, and a discharge outlet is formed in the bottom end of the conical.
2. An L-tyrosine separation apparatus according to claim 1, characterized in that: the feed inlet is the tangential feed inlet, and the feed liquid gets into through the feed inlet tangential.
3. An L-tyrosine separation apparatus according to claim 1, characterized in that: the paddle can move up and down along the rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021852643.6U CN212881194U (en) | 2020-08-31 | 2020-08-31 | L-tyrosine splitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021852643.6U CN212881194U (en) | 2020-08-31 | 2020-08-31 | L-tyrosine splitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212881194U true CN212881194U (en) | 2021-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021852643.6U Expired - Fee Related CN212881194U (en) | 2020-08-31 | 2020-08-31 | L-tyrosine splitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212881194U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111957080A (en) * | 2020-08-31 | 2020-11-20 | 天津科技大学 | L-tyrosine separation equipment and L-tyrosine separation method |
-
2020
- 2020-08-31 CN CN202021852643.6U patent/CN212881194U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111957080A (en) * | 2020-08-31 | 2020-11-20 | 天津科技大学 | L-tyrosine separation equipment and L-tyrosine separation method |
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| CF01 | Termination of patent right due to non-payment of annual fee |
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