CN113372213A - Production system and method of potassium citrate - Google Patents
Production system and method of potassium citrate Download PDFInfo
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- CN113372213A CN113372213A CN202110542424.0A CN202110542424A CN113372213A CN 113372213 A CN113372213 A CN 113372213A CN 202110542424 A CN202110542424 A CN 202110542424A CN 113372213 A CN113372213 A CN 113372213A
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- 239000001508 potassium citrate Substances 0.000 title claims abstract description 101
- 229960002635 potassium citrate Drugs 0.000 title claims abstract description 101
- QEEAPRPFLLJWCF-UHFFFAOYSA-K potassium citrate (anhydrous) Chemical compound [K+].[K+].[K+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O QEEAPRPFLLJWCF-UHFFFAOYSA-K 0.000 title claims abstract description 101
- 235000011082 potassium citrates Nutrition 0.000 title claims abstract description 101
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title description 3
- 239000007788 liquid Substances 0.000 claims abstract description 113
- 239000012528 membrane Substances 0.000 claims abstract description 63
- 239000012452 mother liquor Substances 0.000 claims abstract description 23
- 238000006386 neutralization reaction Methods 0.000 claims description 36
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 30
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 20
- 239000000706 filtrate Substances 0.000 claims description 15
- 238000001914 filtration Methods 0.000 claims description 14
- 238000002425 crystallisation Methods 0.000 claims description 7
- 230000008025 crystallization Effects 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 7
- 239000013078 crystal Substances 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 238000001704 evaporation Methods 0.000 abstract description 9
- 230000008020 evaporation Effects 0.000 abstract description 9
- 238000004064 recycling Methods 0.000 abstract description 8
- 239000012535 impurity Substances 0.000 abstract description 7
- 239000002699 waste material Substances 0.000 abstract description 6
- 238000003912 environmental pollution Methods 0.000 abstract description 5
- 239000000243 solution Substances 0.000 description 68
- 230000000694 effects Effects 0.000 description 8
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000012216 screening Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000010413 mother solution Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 208000019025 Hypokalemia Diseases 0.000 description 1
- 208000000913 Kidney Calculi Diseases 0.000 description 1
- LEVWYRKDKASIDU-IMJSIDKUSA-N L-cystine Chemical compound [O-]C(=O)[C@@H]([NH3+])CSSC[C@H]([NH3+])C([O-])=O LEVWYRKDKASIDU-IMJSIDKUSA-N 0.000 description 1
- 206010029148 Nephrolithiasis Diseases 0.000 description 1
- LEHOTFFKMJEONL-UHFFFAOYSA-N Uric Acid Chemical compound N1C(=O)NC(=O)C2=C1NC(=O)N2 LEHOTFFKMJEONL-UHFFFAOYSA-N 0.000 description 1
- TVWHNULVHGKJHS-UHFFFAOYSA-N Uric acid Natural products N1C(=O)NC(=O)C2NC(=O)NC21 TVWHNULVHGKJHS-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 150000001860 citric acid derivatives Chemical class 0.000 description 1
- 229960003067 cystine Drugs 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 239000006174 pH buffer Substances 0.000 description 1
- 239000002504 physiological saline solution Substances 0.000 description 1
- 208000024896 potassium deficiency disease Diseases 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229940116269 uric acid Drugs 0.000 description 1
- 210000002700 urine Anatomy 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/41—Preparation of salts of carboxylic acids
- C07C51/412—Preparation of salts of carboxylic acids by conversion of the acids, their salts, esters or anhydrides with the same carboxylic acid part
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
- C07C51/43—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D21/0001—Recuperative heat exchangers
- F28D21/0014—Recuperative heat exchangers the heat being recuperated from waste air or from vapors
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention relates to the technical field of potassium citrate production, in particular to a system and a method for producing potassium citrate; the device comprises an ultra-membrane filter, an evaporator and a centrifugal machine, wherein a liquid feeding pipe is arranged at the outlet end of the ultra-membrane filter, a first control valve is arranged on the liquid feeding pipe, and one end of the liquid feeding pipe, which is far away from the ultra-membrane filter, is connected with the liquid inlet end of the evaporator; according to the invention, impurities in the potassium citrate solution can be removed, the generated steam forming solution flows into the ultra-membrane filter and is reused, so that the environmental pollution caused by direct discharge is avoided, the recycling can also be realized, the potassium citrate solution entering the evaporator can be preheated, the heat can be recycled, the heat waste is avoided, the potassium citrate solution flows in the evaporator, the evaporation efficiency is improved, the generated mother liquor is neutralized and filtered, and the mother liquor is reused; so that the quality of the prepared potassium citrate production system is effectively improved.
Description
Technical Field
The invention relates to the technical field of potassium citrate production, in particular to a system and a method for producing potassium citrate.
Background
Potassium citrate is a citrate salt, has the taste of physiological saline, is readily soluble in water, is slowly soluble in glycerol, is insoluble in alcohol, and is salty and cool. As stabilizers and pH buffers, etc. Can be used for various foods, and is used in a proper amount according to production requirements. In medical treatment, it can be used for controlling uric acid or cystine from kidney stone, and preventing and treating hypokalemia and alkalized urine.
The current potassium citrate system that is used for producing, in the production process, directly send into the potassium citrate solution in the evaporimeter, do not preheat the potassium citrate solution that gets into the evaporimeter, the gas that the evaporation produced also can't carry out heat recovery, and simultaneously, the utilization ratio of mother liquor is low, and the potassium citrate solution that is in the evaporimeter can't flow, influences the effect of evaporation, can't satisfy user's demand.
In summary, the development of a system and a method for producing potassium citrate is still a key problem to be solved urgently in the technical field of potassium citrate production.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a potassium citrate production system and a potassium citrate production method, the potassium citrate production system and the potassium citrate production method can remove impurities in a potassium citrate solution, carry out heat exchange through a second cold-heat exchanger, enable a steam-formed solution to flow into an ultra-membrane filter for reuse, avoid environmental pollution caused by direct discharge, and also realize recycling, the second cold-heat exchanger and the first cold-heat exchanger carry out heat exchange to preheat the potassium citrate solution entering an evaporator, realize heat recycling, avoid heat waste, enable the potassium citrate solution to flow in the evaporator, improve evaporation efficiency, neutralize the generated mother liquor through hydrochloric acid and a sodium hydroxide solution, filter the neutralized mother liquor and re-enter a precision filter, and realize the recycling of the mother liquor; so that the quality of the prepared potassium citrate is effectively improved.
In order to achieve the purpose, the invention provides the following technical scheme:
a production system of potassium citrate comprises an ultra-membrane filter, an evaporator and a centrifuge, wherein a liquid feeding pipe is arranged at the outlet end of the ultra-membrane filter, the liquid feeding pipe is provided with a first control valve, one end of the liquid feeding pipe far away from the ultra-membrane filter is connected with the liquid inlet end of the evaporator, the liquid sending pipe is provided with a first cold-heat exchanger, the exhaust port of the evaporator is provided with an exhaust pipe, a second cold-heat exchanger is arranged on the exhaust pipe, a liquid inlet of the second cold-heat exchanger is connected with a liquid outlet of the first cold-heat exchanger, the liquid outlet of the second cold-heat exchanger is connected with the liquid inlet of the first cold-heat exchanger, the outlet end of the evaporator is provided with a discharge pipe, the centrifugal pump is characterized in that a second control valve is installed on the discharge pipe, one end, far away from the evaporator, of the discharge pipe is connected with the centrifugal machine, a return pipe is installed on the evaporator, and a circulating pump is installed on the return pipe.
By adopting the technical scheme: according to the invention, the potassium citrate solution is fed into the ultra-membrane filter through the liquid inlet pipe for filtering, and then enters the evaporator, steam generated in the evaporator enters the exhaust pipe, the second cold-heat exchanger performs cold-heat exchange, the steam-formed solution reenters the ultra-membrane filter, and the second cold-heat exchanger transfers heat to the first cold-heat exchanger, so that the filtered potassium citrate solution entering the liquid inlet pipe is preheated, the heat is recycled, and the heat waste is avoided.
The invention is further configured to: a liquid inlet pipe is installed on a liquid inlet of the ultra-membrane filter, and a liquid feeding pump is installed on the liquid inlet pipe.
By adopting the technical scheme: according to the liquid feeding pump provided by the invention, the potassium citrate solution in the liquid feeding pipe is fed into the ultra-membrane filter for filtering, so that the influence of impurities in the ultra-membrane filter on the use of the evaporator can be effectively avoided, and the service life of the evaporator is prolonged.
The invention is further configured to: the liquid discharge end of the centrifuge is provided with a neutralization kettle, the outlet end of the neutralization kettle is provided with a precision filter, the outlet end of the precision filter is provided with a backflow pipe, one end of the backflow pipe, far away from the precision filter, is communicated with a liquid inlet pipe, and the backflow pipe is provided with a third control valve.
By adopting the technical scheme: the mother liquor enters the neutralization kettle from the liquor discharge end of the centrifuge, hydrochloric acid and sodium hydroxide solution are added into the neutralization kettle to neutralize the mother liquor, the neutralized mother liquor is filtered by the precision filter and enters the precision filter again, and the reutilization of the mother liquor is realized.
The invention is further configured to: the top of the neutralization kettle is provided with a first neutralization pipe and a second neutralization pipe in a communicated manner, and the first neutralization pipe and the second neutralization pipe are respectively provided with a fourth control valve.
By adopting the technical scheme: according to the invention, a hydrochloric acid solution is added through a first neutralization pipe, a sodium hydroxide solution is added through a second neutralization pipe, and the mother liquor is neutralized.
The invention is further configured to: the top intercommunication of ultra-membrane filter is provided with the honeycomb duct, honeycomb duct and blast pipe intercommunication, and install the vacuum pump on the honeycomb duct.
By adopting the technical scheme: the liquid in the guide pipe of the invention can enter the exhaust pipe and then enter the ultra-membrane filter again through the exhaust pipe for recycling.
The invention is further configured to: and a liquid return pipe is arranged on the ultra-membrane filter, and a liquid return pump is arranged on the liquid return pipe.
By adopting the technical scheme: according to the invention, the potassium citrate solution entering the ultra-membrane filter is filtered, the filtrate is positioned at the bottom of the ultra-membrane filter, the liquid return pump is started, the filtrate positioned at the bottom is sent to the liquid return pipe, and then enters the top of the ultra-membrane filter through the liquid return pipe for secondary filtration, so that the filtration effect of the potassium citrate solution can be improved.
A method for the production of potassium citrate, comprising the steps of:
and S1, starting a liquid feeding pump, and feeding the potassium citrate solution into the ultra-membrane filter through a liquid inlet pipe.
S2, the filtrate is sent into the evaporator through the liquid sending pipe, steam generated in the evaporator enters the exhaust pipe, the second cold-heat exchanger carries out cold-heat exchange, the steam-formed solution enters the ultra-membrane filter again, the second cold-heat exchanger transfers heat to the first cold-heat exchanger, and the filtered potassium citrate solution entering the liquid sending pipe is preheated.
And S3, allowing the evaporated crystallization liquid to enter a centrifuge through a discharge pipe for centrifugal separation, and discharging potassium citrate crystals.
And S4, feeding the separated mother liquor into a neutralization kettle, adding hydrochloric acid and sodium hydroxide solution into the neutralization kettle, neutralizing the mother liquor, and feeding the neutralized solution into a return pipe again through a precision filter.
By adopting the technical scheme: the invention removes impurities in the potassium citrate solution through the ultra-membrane filter, the filtered potassium citrate solution can enter the evaporator to be evaporated, the steam enters the exhaust pipe to be subjected to heat exchange through the second cold-heat exchanger, the formed solution flows into the ultra-membrane filter to be reused, environmental pollution caused by direct discharge is avoided, recycling can also be realized, the second cold-heat exchanger and the first cold-heat exchanger are subjected to heat exchange, the potassium citrate solution entering the evaporator is preheated through the first cold-heat exchanger, heat recycling is realized, heat waste is avoided, the potassium citrate solution in the evaporator can flow in the evaporator under the action of the circulating pump, the evaporation efficiency is improved, the generated potassium citrate crystallization liquid can flow into the centrifuge to be centrifuged to generate potassium citrate crystals, the mother liquor is neutralized by hydrochloric acid and sodium hydroxide solution, filtered and re-enters the precision filter, so that the mother liquor is recycled.
The invention is further configured to: in step S2, after the potassium citrate solution is fed into the ultra-membrane filter through the liquid inlet pipe, the liquid return pump is started, and the filtrate filtered by the ultra-membrane filter enters the liquid return pipe and is fed into the ultra-membrane filter again for filtration under the action of the liquid return pump.
By adopting the technical scheme: according to the invention, through the liquid return pump, the filtrate at the bottom of the membrane filter can be sent into the liquid return pipe and then enters the top of the membrane filter, and the secondary filtration of the potassium citrate solution can be selected according to the requirement, so that the filtration effect of the potassium citrate solution can be ensured.
The invention is further configured to: in step S2, the circulation pump is started to continuously flow the potassium citrate solution when the filtered potassium citrate solution is evaporated.
By adopting the technical scheme: according to the invention, the potassium citrate solution is enabled to continuously flow through the circulating pump, so that the evaporation effect is improved.
The invention is further configured to: in the step S3, the discharged potassium citrate is crystallized, dried and sieved to obtain the finished potassium citrate.
By adopting the technical scheme: the finished product of potassium citrate can be prepared by drying and screening and then packaged.
Advantageous effects
Compared with the known public technology, the technical scheme provided by the invention has the following beneficial effects:
when the invention is used, the liquid feeding pump is started, the potassium citrate solution is fed into the ultra-membrane filter through the liquid inlet pipe, impurities in the potassium citrate solution are removed through the ultra-membrane filter, the filtrate after impurity removal is positioned at the bottom of the ultra-membrane filter, the filtrate can feed the filtrate positioned at the bottom of the membrane filter into the liquid return pipe and then into the top of the membrane filter, and secondary filtration of the potassium citrate solution can be selected according to requirements, so that the filtration effect of the potassium citrate solution can be ensured, the filtered filtrate can enter the evaporator, the filtrate is evaporated in the evaporator, the generated steam enters the exhaust pipe and is subjected to heat exchange through the second cold and heat exchanger, the formed solution flows into the ultra-membrane filter for reuse, the environmental pollution caused by direct discharge is avoided, the recycling can also be realized, and the second cold and heat exchanger performs heat exchange with the first cold and heat exchanger, preheat the potassium citrate solution that gets into in the evaporimeter through first cold heat exchanger, realized thermal recycle, avoided the heat waste, preheat the filtrating that enters into in the evaporimeter in advance, the potassium citrate solution flows in the evaporimeter, has promoted evaporation efficiency, and the mother liquor of production can be through hydrochloric acid and sodium hydroxide solution neutralization to filter, enter into the precision filter again in, realized the reuse to the mother liquor.
Drawings
FIG. 1 is a system diagram of a potassium citrate production system;
FIG. 2 is a flow chart of a method for producing potassium citrate.
The reference numbers in the figures illustrate:
1. an ultra-membrane filter; 2. an evaporator; 3. a centrifuge; 4. a first heat exchanger; 5. a second cold heat exchanger; 6. a liquid feeding pump; 7. a liquid inlet pipe; 8. a flow guide pipe; 9. a vacuum pump; 10. an exhaust pipe; 11. a liquid delivery pipe; 12. a neutralization kettle; 13. a precision filter; 14. a return pipe; 15. a circulation pump; 16. a discharge pipe; 17. a first neutralization pipe; 18. a second neutralization pipe; 19. a pipe is reversed; 20. a liquid return pipe; 21. and (5) returning to a liquid pump.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other; the specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
referring to fig. 1, fig. 1 is a system diagram of a potassium citrate production system, which includes an ultra-membrane filter 1, an evaporator 2 and a centrifuge 3, a liquid feeding pipe 11 is installed at an outlet end of the ultra-membrane filter 1, a first control valve is installed on the liquid feeding pipe 11, one end of the liquid feeding pipe 11 away from the ultra-membrane filter 1 is connected to a liquid inlet end of the evaporator 2, a first heat and cold exchanger 4 is installed on the liquid feeding pipe 11, an exhaust pipe 10 is installed at an exhaust port of the evaporator 2, a second heat and cold exchanger 5 is installed on the exhaust pipe 10, a liquid inlet of the second heat and cold exchanger 5 is connected to a liquid outlet of the first heat and cold exchanger 4, a liquid outlet of the second heat and cold exchanger 5 is connected to a liquid inlet of the first heat and cold exchanger 4, a liquid discharging pipe 16 is installed at an outlet end of the evaporator 2, a second control valve is installed on the liquid discharging pipe 16, one end of the liquid discharging pipe 16 away from the evaporator 2 is connected to the centrifuge 3, the evaporator 2 is provided with a return pipe 14, and the return pipe 14 is provided with a circulating pump 15.
A liquid inlet pipe 7 is installed on a liquid inlet of the ultra-membrane filter 1, and a liquid feeding pump 6 is installed on the liquid inlet pipe 7.
The liquid discharge end of the centrifuge 3 is provided with a neutralization kettle 12, the outlet end of the neutralization kettle 12 is provided with a precision filter 13, the outlet end of the precision filter 13 is provided with a backflow pipe 19, one end of the backflow pipe 19 far away from the precision filter 13 is communicated with the liquid inlet pipe 7, and the backflow pipe 19 is provided with a third control valve.
The top of the neutralization kettle 12 is provided with a first neutralization pipe 17 and a second neutralization pipe 18 in a communication way, and the first neutralization pipe 17 and the second neutralization pipe 18 are both provided with a fourth control valve.
The top of the ultra-membrane filter 1 is communicated with a flow guide pipe 8, the flow guide pipe 8 is communicated with an exhaust pipe 10, and a vacuum pump 9 is installed on the flow guide pipe 8.
A liquid return pipe 20 is arranged on the ultra-membrane filter 1, and a liquid return pump 21 is arranged on the liquid return pipe 20.
In the invention, when in use, a potassium citrate solution is sent into the ultra-membrane filter 1 through the liquid inlet pipe 7, impurities in the potassium citrate solution are removed through the ultra-membrane filter 1, after the potassium citrate solution is sent into the ultra-membrane filter 1 through the liquid inlet pipe 7, the liquid return pump 21 is started, filtrate filtered by the ultra-membrane filter 1 enters the liquid return pipe 20, and is sent into the ultra-membrane filter 1 again for filtering under the action of the liquid return pump 21, and secondary filtration of the potassium citrate solution can be selected according to requirements, so that the filtration effect of the potassium citrate solution can be ensured, the filtered potassium citrate solution enters the evaporator 2 for evaporation, and when steam enters the exhaust pipe 10, heat exchange is carried out through the second cold-heat exchanger 4, the formed solution flows into the ultra-membrane filter 1 for reuse, so that environmental pollution caused by direct discharge is avoided, also can realize recycle, second cold and heat exchanger 4 carries out heat exchange with first cold and heat exchanger 5, preheat the potassium citrate solution that gets into in evaporimeter 2 through first cold and heat exchanger 5, thermal recycle has been realized, avoid the heat waste, the potassium citrate solution that is in evaporimeter 2 can be under circulating pump 15's effect, flow in evaporimeter 2, the evaporation efficiency has been promoted, the potassium citrate crystallization liquid of production can flow into centrifuge 3 in, carry out the centrifugation, produce the potassium citrate crystallization, the mother liquor can be through hydrochloric acid and sodium hydroxide solution neutralization, and filter, reenter in precision filter 13, the reuse to the mother liquor has been realized.
Example 2:
on the basis of the example 1, please refer to fig. 2, fig. 2 is a flow chart of a method for producing potassium citrate, and the invention further provides a method for producing potassium citrate, which comprises the following steps:
step one, starting a liquid feeding pump 6, and feeding the potassium citrate solution into the ultra-membrane filter 1 through a liquid inlet pipe 7.
And step two, the filtrate is sent into the evaporator 2 through the liquid sending pipe 11, steam generated in the evaporator 2 enters the exhaust pipe 10, the second cold-heat exchanger 5 carries out cold-heat exchange, the steam-formed solution enters the ultra-membrane filter 1 again, the second cold-heat exchanger 5 transfers heat to the first cold-heat exchanger 4, and the filtered potassium citrate solution entering the liquid sending pipe 11 is preheated.
And step three, the evaporated crystallization liquid enters a centrifuge 3 through a discharge pipe 16 for centrifugal separation, and potassium citrate crystals are discharged.
And step four, the separated mother liquor enters a neutralization kettle 12, hydrochloric acid and sodium hydroxide solution are added into the neutralization kettle 12, the mother liquor is neutralized, and the neutralized solution is sent into a return pipe 19 again through a precision filter 13.
After the potassium citrate solution is sent into the ultra-membrane filter 1 through the liquid inlet pipe 7, the liquid return pump 21 is started, the filtrate filtered by the ultra-membrane filter enters the liquid return pipe 20, and is sent into the ultra-membrane filter 1 again for filtering under the action of the liquid return pump 21.
When the filtered potassium citrate solution is evaporated, the circulating pump 15 is started to make the potassium citrate solution continuously flow.
And crystallizing the discharged potassium citrate, and drying and screening to obtain a finished product of potassium citrate.
When the potassium citrate solution is used, the potassium citrate solution is concentrated into a supersaturated solution in the evaporator 2 for crystallization, the potassium citrate finished product is prepared by drying and screening, the generated mother solution is neutralized by hydrochloric acid and a sodium hydroxide solution, and is filtered and then enters the precision filter 13 again, so that the recovery rate of the mother solution can be greatly improved.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (10)
1. The production system of the potassium citrate comprises an ultra-membrane filter (1), an evaporator (2) and a centrifuge (3), and is characterized in that a liquid feeding pipe (11) is installed at the outlet end of the ultra-membrane filter (1), a first control valve is installed on the liquid feeding pipe (11), one end, away from the ultra-membrane filter (1), of the liquid feeding pipe (11) is connected with the liquid inlet end of the evaporator (2), a first cold-heat exchanger (4) is installed on the liquid feeding pipe (11), an exhaust pipe (10) is installed at the exhaust port of the evaporator (2), a second cold-heat exchanger (5) is installed on the exhaust pipe (10), the liquid inlet of the second cold-heat exchanger (5) is connected with the liquid outlet of the first cold-heat exchanger (4), and the liquid outlet of the second cold-heat exchanger (5) is connected with the liquid inlet of the first cold-heat exchanger (4), discharging pipe (16) are installed to the outlet end of evaporimeter (2), install the second control valve on discharging pipe (16), the one end that evaporimeter (2) were kept away from in discharging pipe (16) is connected with centrifuge (3), install back flow (14) on evaporimeter (2), install circulating pump (15) on back flow (14).
2. The potassium citrate production system according to claim 1, wherein a liquid inlet pipe (7) is installed on the liquid inlet of the ultra-membrane filter (1), and a liquid feeding pump (6) is installed on the liquid inlet pipe (7).
3. The potassium citrate production system according to claim 2, wherein a neutralization kettle (12) is installed at the liquid discharge end of the centrifuge (3), a precision filter (13) is installed at the outlet end of the neutralization kettle (12), a backflow pipe (19) is installed at the outlet end of the precision filter (13), one end, far away from the precision filter (13), of the backflow pipe (19) is communicated with the liquid inlet pipe (7), and a third control valve is installed on the backflow pipe (19).
4. The potassium citrate production system according to claim 3, wherein a first neutralization pipe (17) and a second neutralization pipe (18) are arranged at the top of the neutralization kettle (12) in a communication manner, and a fourth control valve is arranged on each of the first neutralization pipe (17) and the second neutralization pipe (18).
5. The potassium citrate production system according to claim 1, wherein a flow guide pipe (8) is arranged at the top of the ultra-membrane filter (1) in a communication manner, the flow guide pipe (8) is communicated with an exhaust pipe (10), and a vacuum pump (9) is arranged on the flow guide pipe (8).
6. The potassium citrate production system according to claim 1, wherein a liquid return pipe (20) is installed on the ultra-membrane filter (1), and a liquid return pump (21) is installed on the liquid return pipe (20).
7. A method for producing potassium citrate, which is characterized by using the potassium citrate production system according to any one of claims 1 to 6, and comprising the following steps:
s1, starting a liquid feeding pump (6), and feeding the potassium citrate solution into the ultra-membrane filter (2) through a liquid feeding pipe (7);
s2, the filtrate is sent into an evaporator (2) through a liquid sending pipe (11), steam generated in the evaporator (2) enters an exhaust pipe (10), a second cold-heat exchanger (5) carries out cold-heat exchange, the steam-formed solution enters the ultra-membrane filter (1) again, the second cold-heat exchanger (5) transfers heat to a first cold-heat exchanger (4), and the filtered potassium citrate solution entering the liquid sending pipe (11) is preheated;
s3, the evaporated crystallization liquid enters a centrifuge (3) through a discharge pipe (16) for centrifugal separation, and potassium citrate crystals are discharged;
s4, the separated mother liquor enters a neutralization kettle (12), hydrochloric acid and sodium hydroxide solution are added into the neutralization kettle (12) to neutralize the mother liquor, and the neutralized solution is sent to a return pipe (19) again through a precision filter (13).
8. The method for producing potassium citrate according to claim 7, wherein in the step S2, after the potassium citrate solution is fed into the ultra-membrane filter (1) through the liquid inlet pipe (7), the liquid return pump (21) is started, and the filtrate filtered by the ultra-membrane filter (1) enters the liquid return pipe (20) and is fed into the ultra-membrane filter (1) again for filtration under the action of the liquid return pump (21).
9. The method for producing potassium citrate according to claim 7, wherein in the step S2, when the filtered potassium citrate solution is evaporated, the circulating pump (15) is started to make the potassium citrate solution continuously flow.
10. The method for producing potassium citrate according to claim 7, wherein in the step S3, the discharged potassium citrate is crystallized, dried and sieved to obtain the finished potassium citrate.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116809003A (en) * | 2023-08-29 | 2023-09-29 | 江苏科伦多食品配料有限公司 | Efficient neutralization equipment for potassium citrate production |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101050173A (en) * | 2006-04-05 | 2007-10-10 | 黄石兴华生化有限公司 | Method for producing potassium citrate through continuous condensing crystallizing, and apparatus for realizing the method |
| CN103012115A (en) * | 2012-12-30 | 2013-04-03 | 湖南尔康制药股份有限公司 | Production process of medicinal potassium citrate |
| CN111620776A (en) * | 2020-06-09 | 2020-09-04 | 连云港树人科创食品添加剂有限公司 | Method for removing potassium citrate easily-carbonized substance |
| CN112457185A (en) * | 2019-09-09 | 2021-03-09 | 连云港树人科创食品添加剂有限公司 | Iron-removing purification process for potassium citrate mother liquor |
-
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- 2021-05-18 CN CN202110542424.0A patent/CN113372213A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101050173A (en) * | 2006-04-05 | 2007-10-10 | 黄石兴华生化有限公司 | Method for producing potassium citrate through continuous condensing crystallizing, and apparatus for realizing the method |
| CN103012115A (en) * | 2012-12-30 | 2013-04-03 | 湖南尔康制药股份有限公司 | Production process of medicinal potassium citrate |
| CN112457185A (en) * | 2019-09-09 | 2021-03-09 | 连云港树人科创食品添加剂有限公司 | Iron-removing purification process for potassium citrate mother liquor |
| CN111620776A (en) * | 2020-06-09 | 2020-09-04 | 连云港树人科创食品添加剂有限公司 | Method for removing potassium citrate easily-carbonized substance |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116809003A (en) * | 2023-08-29 | 2023-09-29 | 江苏科伦多食品配料有限公司 | Efficient neutralization equipment for potassium citrate production |
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