CN106349123A - Method for separating taurine in taurine crude product mother solution - Google Patents
Method for separating taurine in taurine crude product mother solution Download PDFInfo
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- CN106349123A CN106349123A CN201610720656.XA CN201610720656A CN106349123A CN 106349123 A CN106349123 A CN 106349123A CN 201610720656 A CN201610720656 A CN 201610720656A CN 106349123 A CN106349123 A CN 106349123A
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C303/00—Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides
- C07C303/42—Separation; Purification; Stabilisation; Use of additives
- C07C303/44—Separation; Purification
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/42—Electrodialysis; Electro-osmosis ; Electro-ultrafiltration; Membrane capacitive deionization
- B01D61/422—Electrodialysis
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- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Health & Medical Sciences (AREA)
- Urology & Nephrology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
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Abstract
The invention discloses a method for separating taurine in a taurine crude product mother solution. A plurality of electrodialysis separation systems connected mutually are utilized to perform concentration and separation of a taurine solution and a salt solution on the taurine crude product mother solution. Each electrodialysis separation system comprises a weak salt tank, a strong salt tank and electrodialysis plants connected between the weak salt tank and strong salt tank, wherein an conductivity meter and a pressure pump are arranged below the weak salt tank and strong salt tank; all levels of electrodialysis plants continuously perform electrodialysis separation on the liquids pumped into the weak salt tank and strong salt tank until the conductivity of the separated weak phase salt water is lower than 5ms/cm; when a liquid chromatograph determines that the taurine/salt mass ratio is greater than 9:1, the weak phase salt water is subjected to reduced pressure concentration to obtain the taurine solution; when the conductivity of the strong phase salt water continuously separated by the electrodialysis plants is higher than 200 ms/cm, the thick phase salt water is subjected to reduced pressure concentration to obtain the salt solution, or else, the separation treatment of all levels of electrodialysis plants is continued. The method is simple to operate, and has the advantages of low operating cost and favorable separating effect.
Description
Technical field
The present invention relates to organic chemical synthesis separation technology field, more particularly to one kind divide from taurine crude product mother solution
The method separating out the higher taurine of purity.
Background technology
Taurine (taurine), also known as taurine, is a kind of nonprotein sulfur amino acid, chemical entitled 2- amino second
Sulfonic acid, is a kind of sulfur-containing amino acid with different physiological roles existing in human body, has promotion brain development, enhancing regards
Power, antiinflammatory, the antipyretic, effect such as blood pressure lowering, blood sugar lowering, strong liver cholagogic, are one of most important aminoacid in human body.Taurine is no
Any toxic and side effects, therefore developed country attaches great importance to its research and application.Recently as to its physiological action, nutriture value
The further investigation of value, its application becomes widely, and taurine is used as nutrient and healthcare products and food additive abroad in a large number, according to
Report, the U.S. and Japan are topmost countries of consumption, and annual consumption reaches 10,000 tons and more than 5,000 ton respectively.
With the transfer of world's chemical industry, China has become the maximum and main taurine manufacturing country in the whole world and outlet
State, when 2000 taurine total output be 20,000 tons about, 2008 gross annual output amounts at 3.38 ten thousand tons about, the export volume of 2010
More than 40,000 tons；China's taurine 90% exports, and is primary destination American-European and Southeast Asia, and export volume increases year by year；With China
The raising of living standards of the people, the domestic demand to taurine also gradually increases, if the consumption figure of China's taurine reaches Europe
The half of man of the U.S., will be increased to few 40,000 tons of year demand.Taurine industrial chain develops rapidly, downstream process deeply industry
The demand of taurine is made increasingly to increase, the process modification of research taurine has important economy and society's meaning to industry development
Justice.
Since taurine self-discovery, people are just constantly exploring the approach of its synthetic.So far, about taurine
Synthetic method not less than dozens.China's industrialization taurine production method mainly has Girbotal process and epoxyethane method at present,
But two kinds of techniques have a common ground: all can contain inorganic salt and taurine in the mother solution producing in production process.Due in mother solution
The content of inorganic salt is far above taurine, technique many using after concentrating while hot sucking filtration desalt, due to (nh4)2so3, (nh4)2so4、
na2so3With na2so4Easily bond, the preferable effect of separation difficult to reach of taurine and inorganic salt, direct shadow in whole process
Ring yield, therefore increase production cost height, energy consumption is big, high labor intensive.
Content of the invention
The invention mainly solves the technical problem of providing a kind of method separating taurine in taurine crude product mother solution, adopt
Cover the concentration that interconnective electrodialysis piece-rate system carries out taurine solution and saline solution to taurine crude product mother solution with some
And separate, easy and simple to handle, operating cost is low, good separating effect.
For solving above-mentioned technical problem, one aspect of the present invention is:
There is provided a kind of method separating taurine in taurine crude product mother solution, using the interconnective electrodialysis segregative line of some sets
System carries out the concentration of taurine solution and saline solution to taurine crude product mother solution and separates；Described electrodialysis piece-rate system includes light
Salt cellar and dense salt cellar, described light salt cellar is connected with electrodialysis plant by pipeline respectively with described dense salt cellar, described light salt cellar and
All it is provided with conductivity meter and force (forcing) pump below described dense salt cellar.
In a preferred embodiment of the present invention, including four sets of electrodialysis piece-rate systems, respectively mother solution piece-rate system,
One piece-rate system, the second piece-rate system and the 3rd piece-rate system；
Taurine crude product mother solution tank is connected with the light salt cellar in mother solution piece-rate system by pipeline, the light salt in mother solution piece-rate system
It is connected with the first buffer tank, described first buffer tank leads to the light salt cellar in the first piece-rate system by pipeline after tank；Mother solution divides
Dense salt cellar in the dense salt cellar in system, the dense salt cellar and the 3rd piece-rate system in the first piece-rate system is all led to by pipeline
Second buffer tank, the second buffer tank respectively leads to the light salt cellar in the second piece-rate system and dense salt cellar by pipeline；Second separates
Light salt cellar in system leads to the 3rd buffer tank by pipeline, and described 3rd buffer tank respectively leads to the 3rd segregative line by pipeline
Light salt cellar in system and dense salt cellar；Light salt cellar in water supply pipe or the 3rd piece-rate system leads to mother solution segregative line by pipeline
The dense salt cellar in dense salt cellar and the first piece-rate system in system.
In a preferred embodiment of the present invention, described first buffer tank, described second buffer tank and described 3rd caching
It is fitted with electromagnetic valve after tank.
In a preferred embodiment of the present invention, the light salt cellar in mother solution piece-rate system, the dense salt in mother solution piece-rate system
Connect after the dense salt cellar in light salt cellar and the 3rd piece-rate system in dense salt cellar in tank, the first piece-rate system, the second piece-rate system
Electromagnetic valve is all provided with the pipeline connecing.
In a preferred embodiment of the present invention, after the light salt cellar in the first piece-rate system, it is provided with detection taurine concentration
Chromatograph of liquid.
In a preferred embodiment of the present invention, taurine crude product mother solution is passed through in the light salt cellar in mother solution piece-rate system,
Tap water or recycle-water are passed through in the dense salt cellar in mother solution piece-rate system, and the liquid in two tanks pumps into mother respectively by force (forcing) pump
Carry out electrodialysis in electrodialysis plant in liquid separation system to separate, the light phase saline after separating is back in mother solution piece-rate system
In light salt cellar, concentrated phase saline is back in the dense salt cellar in mother solution piece-rate system；After the light salt cellar in mother solution piece-rate system
Conductivity meter measures the electrical conductivity in light phase saline, and not higher than 100ms/cm then light phase saline is passed through in the first buffer tank, no
Then continue to pump into and in the electrodialysis plant in mother solution piece-rate system, carry out electrodialysis separation；Dense salt in mother solution piece-rate system
Conductivity meter after tank measures the electrical conductivity in concentrated phase saline, is not less than 100ms/cm and then concentrated phase saline is passed through the second buffer tank
In, otherwise continue to pump into carry out in the electrodialysis plant in mother solution piece-rate system electrodialysis separate；
Liquid in first buffer tank is passed through in the light salt cellar in the first piece-rate system, and tap water or recycle-water are passed through first and separate
In dense salt cellar in system, the liquid in two tanks is pumped in the electrodialysis plant in the first piece-rate system by force (forcing) pump respectively
Carry out electrodialysis to separate, the light phase saline after separating is back in the light salt cellar in the first piece-rate system, and concentrated phase saline is back to first
In dense salt cellar in piece-rate system；Conductivity meter after the light salt cellar in the first piece-rate system measures its electrical conductivity≤5ms/
Cm, opens online hplc determination taurine concentration therein, when measuring taurine and the mass ratio of salt in solution is
More than 9:1, then carry out concentrating under reduced pressure by light phase saline and extracted taurine further, otherwise continues to pump into the first piece-rate system
In electrodialysis plant in carry out electrodialysis and separate, conductivity meter after the dense salt cellar in the first piece-rate system measures dense salt
Electrical conductivity in water, is not less than 100ms/cm and then strong brine is passed through in the second buffer tank, otherwise continue to pump into the first segregative line
Carry out electrodialysis in electrodialysis plant in system to separate；
Liquid in second buffer tank is passed through in the dense salt cellar in the light salt cellar and the second piece-rate system in the second piece-rate system, and two
Carry out electrodialysis in the electrodialysis plant that liquid in individual tank pumps into by force (forcing) pump in the second piece-rate system respectively to separate, separate
Light phase saline afterwards is back in the light salt cellar in the second piece-rate system, and concentrated phase saline is back to the dense salt cellar in the second piece-rate system
In；Measure the electrical conductivity in light phase saline, not higher than 10ms/cm positioned at the conductivity meter after the light salt cellar in the second piece-rate system
Then this light phase saline is passed through in the 3rd buffer tank, otherwise continues to pump into and in the electrodialysis plant in the second piece-rate system, carry out electricity
Dialysis separates, and measures the electrical conductivity in concentrated phase saline positioned at the conductivity meter after the dense salt cellar in the second piece-rate system, is not less than
Concentrated phase saline is then carried out concentrating under reduced pressure by 200ms/cm, extracts salt therein, otherwise continues to pump in the second piece-rate system
Carry out electrodialysis in electrodialysis plant to separate；
Liquid in 3rd buffer tank is passed through in the dense salt cellar in the light salt cellar and the 3rd piece-rate system in the 3rd piece-rate system, and two
Carry out electrodialysis in the electrodialysis plant that liquid in individual tank pumps into by force (forcing) pump in the 3rd piece-rate system respectively to separate, separate
Light phase saline afterwards is back in the light salt cellar in the 3rd piece-rate system, and concentrated phase saline is back to the dense salt cellar in the 3rd piece-rate system
In；Light phase saline in the light salt cellar in the 3rd piece-rate system, measures electrical conductivity and is not higher than 0.1ms/cm, by this light phase salt
Water is reclaimed, and becomes recycle-water, or continue to pump into carry out in the electrodialysis plant in the 3rd piece-rate system electrodialysis separate, position
Measure the electrical conductivity in concentrated phase saline in the conductivity meter after the dense salt cellar in the 3rd piece-rate system, be not less than 100ms/cm and then will
Strong brine is passed through in the second buffer tank, otherwise continues to pump into and carries out electrodialysis in the electrodialysis plant in the 3rd piece-rate system and divide
From.
The invention has the beneficial effects as follows: the method separating taurine in a kind of present invention taurine crude product mother solution, if by
The interconnective electrodialysis piece-rate system of dry set carries out the concentration of taurine solution and saline solution and divides to taurine crude product mother solution
From easy and simple to handle, operating cost is low, good separating effect.
Brief description
Fig. 1 is the operation principle schematic diagram of a preferred embodiment of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawings presently preferred embodiments of the present invention is described in detail, so that advantages and features of the invention energy
It is easier to be readily appreciated by one skilled in the art, thus protection scope of the present invention is made apparent clearly defining.
Refer to accompanying drawing, the embodiment of the present invention includes:
A kind of method separating taurine in taurine crude product mother solution, using four sets of interconnective electrodialysis piece-rate systems to cattle
Sulfonic acid crude product mother solution carries out the concentration of taurine solution and saline solution and separates, this four sets of electrodialysis piece-rate systems, respectively female
Liquid separation system 1, the first piece-rate system 2, the second piece-rate system 3 and the 3rd piece-rate system 4, these electrodialysis piece-rate systems all have
There are light salt cellar and dense salt cellar, light salt cellar is connected with electrodialysis plant by pipeline respectively with dense salt cellar, under light salt cellar and dense salt cellar
Side is all provided with conductivity meter 8 and force (forcing) pump 9.
Taurine crude product mother solution tank is connected with the light salt cellar 11 in mother solution piece-rate system, in mother solution piece-rate system by pipeline
Light salt cellar 11 after be connected with the first buffer tank 5, described first buffer tank 5 leads to the light salt in the first piece-rate system by pipeline
Tank 21；The dense salt in dense salt cellar 22 and the 3rd piece-rate system in dense salt cellar 12 in mother solution piece-rate system, the first piece-rate system
Tank 42 all leads to the second buffer tank 6 by pipeline, and the second buffer tank 6 respectively leads to the light salt in the second piece-rate system by pipeline
Dense salt cellar 32 in tank 31 and the second piece-rate system；Light salt cellar 31 in second piece-rate system leads to the 3rd buffer tank by pipeline
7, described 3rd buffer tank lead to 7 pipings respectively lead to dense in light salt cellar 41 and the 3rd piece-rate system in the 3rd piece-rate system
Salt cellar 42；Light salt cellar 41 in water supply pipe or the 3rd piece-rate system leads to the dense salt cellar in mother solution piece-rate system by pipeline
The 12 and first dense salt cellars 22 in piece-rate system.
It is fitted with electromagnetic valve 10 after described first buffer tank 5, described second buffer tank 6 and described 3rd buffer tank 7.
Dense in dense salt cellar 12 in light salt cellar 11 in mother solution piece-rate system, mother solution piece-rate system, the first piece-rate system
All install on the latter linked pipeline of dense salt cellar 42 in light salt cellar 31 in salt cellar 22, the second piece-rate system, the 3rd piece-rate system
There is electromagnetic valve 10.
It is provided with the chromatograph of liquid 24 of detection taurine concentration after light salt cellar 21 in first piece-rate system.
The concrete processing procedure of the present invention is as follows:
Taurine crude product mother solution is passed through in the light salt cellar 11 in mother solution piece-rate system, and tap water or recycle-water are passed through mother solution segregative line
In dense salt cellar 12 in system, the liquid in two tanks pumps into the electrodialysis plant in mother solution piece-rate system respectively by force (forcing) pump 9
Carry out electrodialysis in 13 to separate, the light phase saline after separating is back in the light salt cellar 11 in mother solution piece-rate system, and concentrated phase saline returns
In dense salt cellar 12 to mother solution piece-rate system；Conductivity meter 8 after the light salt cellar 11 in mother solution piece-rate system measures light
Electrical conductivity in phase saline, not higher than 100ms/cm then light phase saline are passed through in the first buffer tank 5, otherwise continue to pump into mother solution
Carry out electrodialysis in electrodialysis plant 13 in piece-rate system to separate, the conductance after the dense salt cellar 12 in mother solution piece-rate system
Rate instrument 8 measures the electrical conductivity in concentrated phase saline, is not less than 100ms/cm and then concentrated phase saline is passed through in the second buffer tank 6, otherwise
Continue to pump into and in the electrodialysis plant 13 in mother solution piece-rate system, carry out electrodialysis separation.
Liquid in first buffer tank 5 is passed through in the light salt cellar 21 in the first piece-rate system, and tap water or recycle-water are passed through
In dense salt cellar 22 in first piece-rate system, the liquid in two tanks is pumped in the first piece-rate system by force (forcing) pump 9 respectively
Carry out electrodialysis in electrodialysis plant 23 to separate, the light phase saline after separating is back in the light salt cellar 21 in the first piece-rate system,
Concentrated phase saline is back in the dense salt cellar 22 in the first piece-rate system；Electrical conductivity after the light salt cellar 21 in the first piece-rate system
Instrument 8 measures electrical conductivity≤5ms/cm, opens online chromatograph of liquid 24 and measures taurine concentration therein, when measuring in solution
Taurine is more than 9:1 with the mass ratio of salt, then light phase saline is carried out concentrating under reduced pressure and extracted taurine further, otherwise
Continue to pump into and in the electrodialysis plant 23 in the first piece-rate system, carry out electrodialysis separation, the dense salt in the first piece-rate system
Conductivity meter 8 after tank 22 measures the electrical conductivity in concentrated phase saline, is not less than 100ms/cm and then concentrated phase saline is passed through second and delays
Deposit in tank 6, otherwise continue to pump into carry out in the electrodialysis plant 23 in the first piece-rate system electrodialysis separate.
Liquid in second buffer tank 6 is passed through the dense salt in the light salt cellar 31 and the second piece-rate system in the second piece-rate system
In tank 32, in the electrodialysis plant 33 that the liquid in two tanks pumps in the second piece-rate system respectively by force (forcing) pump 9, carry out electricity
Dialysis separates, and the light phase saline after separating is back in the light salt cellar 31 in the second piece-rate system, and concentrated phase saline is back to second and separates
In dense salt cellar 32 in system；After the light salt cellar in the second piece-rate system, 31 conductivity meter 8 measures in light phase saline
Electrical conductivity, not higher than 10ms/cm then this light phase saline are passed through in the 3rd buffer tank 7, otherwise continue to pump into the second piece-rate system
In electrodialysis plant 33 in carry out electrodialysis and separate, the conductivity meter 8 after the dense salt cellar 32 in the second piece-rate system surveys
Determine the electrical conductivity in concentrated phase saline, be not less than 200ms/cm and then concentrated phase saline carried out concentrating under reduced pressure, extract salt therein and (carry
The mass fraction of the salt in the solution taking out is more than 98%), otherwise continue to pump into the electrodialysis plant in the second piece-rate system
Carry out electrodialysis in 33 to separate.
Light phase saline in 3rd buffer tank 7 is passed through in the light salt cellar 41 and the 3rd piece-rate system in the 3rd piece-rate system
In dense salt cellar 42, enter in the electrodialysis plant 43 that the liquid in two tanks is pumped in the 3rd piece-rate system respectively by force (forcing) pump 9
Row electrodialysis separate, and the light phase saline after separating is back in the light salt cellar 41 in the 3rd piece-rate system, and concentrated phase saline is back to the 3rd
In dense salt cellar 42 in piece-rate system；Light salt brine in the light salt cellar 41 in the 3rd piece-rate system, measures electrical conductivity not high
In 0.1ms/cm, this light phase saline is reclaimed, is become recycle-water, or the electrodialysis continuing to pump in the 3rd piece-rate system are set
Carry out electrodialysis in standby 43 to separate, measure in concentrated phase saline positioned at the conductivity meter 8 after the dense salt cellar 42 in the 3rd piece-rate system
Electrical conductivity, be not less than 100ms/cm and then concentrated phase saline be passed through in the second buffer tank 6, otherwise continue to pump into the 3rd piece-rate system
In electrodialysis plant 43 in carry out electrodialysis separate.
The high concentration taurine solution separated in final taurine mother solution is by the light salt cellar 21 in the first piece-rate system
Middle taking-up carries out concentrating under reduced pressure again, purifies further, and high concentration salt solutions are then by the dense salt cellar 32 in the second piece-rate system
Taking-up carries out concentrating under reduced pressure and purifies further.
Taurine is separated with being mingled with salt therein by the present invention by electrodialytic technique, can obtain after separating for several times
To the higher taurine solution of purity and saline solution.System structure in the present invention is simple, operating cost is low it is easy to promote.
The foregoing is only embodiments of the invention, not thereby limit the present invention the scope of the claims, every using this
Equivalent structure or equivalent flow conversion that bright description and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (6)
1. separate the method for taurine in a kind of taurine crude product mother solution it is characterised in that covering interconnective electricity using some
Dialysis piece-rate system carries out the concentration of taurine solution and saline solution to taurine crude product mother solution and separates；Described electrodialysis separate
System includes light salt cellar and dense salt cellar, and described light salt cellar is connected with electrodialysis plant by pipeline respectively with described dense salt cellar, institute
State and be all provided with conductivity meter and force (forcing) pump below light salt cellar and described dense salt cellar；Electrodialysis plants at different levels are constantly to light salt cellar
The liquid pumping into dense salt cellar carries out electrodialysis and separates, and is less than 5ms/cm until separating the light phase salt electrical conductivity of water obtaining, by
Hplc determination taurine therein is more than 9:1 with the mass ratio of salt, then this light phase saline is carried out concentrating under reduced pressure and obtain
To taurine solution, otherwise continue to carry out separating treatment by electrodialysis plants at different levels；Electrodialysis plants at different levels constantly separately obtain
Concentrated phase saline, measure its electrical conductivity be higher than 200ms/cm, then this concentrated phase saline carry out concentrating under reduced pressure, obtain saline solution, otherwise
Continue on through electrodialysis plants at different levels and carry out separating treatment.
2. separate the method for taurine in taurine crude product mother solution according to claim 1 it is characterised in that including four sets
Electrodialysis piece-rate system, respectively mother solution piece-rate system, the first piece-rate system, the second piece-rate system and the 3rd piece-rate system；
Taurine crude product mother solution tank is connected with the light salt cellar in mother solution piece-rate system by pipeline, the light salt in mother solution piece-rate system
It is connected with the first buffer tank, described first buffer tank leads to the light salt cellar in the first piece-rate system by pipeline after tank；Mother solution divides
Dense salt cellar in the dense salt cellar in system, the dense salt cellar and the 3rd piece-rate system in the first piece-rate system is all led to by pipeline
Second buffer tank, the second buffer tank respectively leads to the light salt cellar in the second piece-rate system and dense salt cellar by pipeline；Second separates
Light salt cellar in system leads to the 3rd buffer tank by pipeline, and described 3rd buffer tank respectively leads to the 3rd segregative line by pipeline
Light salt cellar in system and dense salt cellar；Light salt cellar in water supply pipe or the 3rd piece-rate system leads to mother solution segregative line by pipeline
The dense salt cellar in dense salt cellar and the first piece-rate system in system.
3. separate the method for taurine in taurine crude product mother solution according to claim 2 it is characterised in that described first
It is fitted with electromagnetic valve after buffer tank, described second buffer tank and described 3rd buffer tank.
4. separate the method for taurine in taurine crude product mother solution according to claim 2 it is characterised in that mother solution separates
In dense salt cellar in dense salt cellar in light salt cellar in system, mother solution piece-rate system, the first piece-rate system, the second piece-rate system
On the latter linked pipeline of dense salt cellar in light salt cellar and the 3rd piece-rate system, electromagnetic valve is all installed.
5. separate the method for taurine in taurine crude product mother solution according to claim 2 it is characterised in that first separates
It is provided with the chromatograph of liquid of detection taurine concentration after light salt cellar in system.
6. separate the method for taurine in taurine according to claim 2 mistake mother solution it is characterised in that taurine crude product
Mother solution is passed through in the light salt cellar in mother solution piece-rate system, and tap water or recycle-water are passed through in the dense salt cellar in mother solution piece-rate system,
Carry out electrodialysis in the electrodialysis plant that liquid in two tanks pumps in mother solution piece-rate system respectively by force (forcing) pump to separate, point
From after the light salt cellar that is back in mother solution piece-rate system of light phase saline in, concentrated phase saline is back to the dense salt cellar in mother solution piece-rate system
In；Measure the electrical conductivity in light phase saline, not higher than 100ms/ positioned at the conductivity meter after the light salt cellar in mother solution piece-rate system
Cm then light phase saline is passed through in the first buffer tank, otherwise continues to pump into and carries out electricity in the electrodialysis plant in mother solution piece-rate system
Dialysis separates；Measure the electrical conductivity in concentrated phase saline positioned at the conductivity meter after the dense salt cellar in mother solution piece-rate system, be not less than
100ms/cm then concentrated phase saline is passed through in the second buffer tank, otherwise continues to pump in the electrodialysis plant in mother solution piece-rate system
Carry out electrodialysis to separate；
Liquid in first buffer tank is passed through in the light salt cellar in the first piece-rate system, and tap water or recycle-water are passed through first and separate
In dense salt cellar in system, the liquid in two tanks is pumped in the electrodialysis plant in the first piece-rate system by force (forcing) pump respectively
Carry out electrodialysis to separate, the light phase saline after separating is back in the light salt cellar in the first piece-rate system, and concentrated phase saline is back to first
In dense salt cellar in piece-rate system；Conductivity meter after the light salt cellar in the first piece-rate system measures its electrical conductivity≤5ms/
Cm, opens online hplc determination taurine concentration therein, when measuring taurine and the mass ratio of salt in solution is
More than 9:1, then carry out concentrating under reduced pressure by light phase saline and extracted taurine further, otherwise continues to pump into the first piece-rate system
In electrodialysis plant in carry out electrodialysis and separate, conductivity meter after the dense salt cellar in the first piece-rate system measures dense salt
Electrical conductivity in water, is not less than 100ms/cm and then strong brine is passed through in the second buffer tank, otherwise continue to pump into the first segregative line
Carry out electrodialysis in electrodialysis plant in system to separate；
Liquid in second buffer tank is passed through in the dense salt cellar in the light salt cellar and the second piece-rate system in the second piece-rate system, and two
Carry out electrodialysis in the electrodialysis plant that liquid in individual tank pumps into by force (forcing) pump in the second piece-rate system respectively to separate, separate
Light phase saline afterwards is back in the light salt cellar in the second piece-rate system, and concentrated phase saline is back to the dense salt cellar in the second piece-rate system
In；Measure the electrical conductivity in light phase saline, not higher than 10ms/cm positioned at the conductivity meter after the light salt cellar in the second piece-rate system
Then this light phase saline is passed through in the 3rd buffer tank, otherwise continues to pump into and in the electrodialysis plant in the second piece-rate system, carry out electricity
Dialysis separates, and measures the electrical conductivity in concentrated phase saline positioned at the conductivity meter after the dense salt cellar in the second piece-rate system, is not less than
Concentrated phase saline is then carried out concentrating under reduced pressure by 200ms/cm, extracts salt therein, otherwise continues to pump in the second piece-rate system
Carry out electrodialysis in electrodialysis plant to separate；
Liquid in 3rd buffer tank is passed through in the dense salt cellar in the light salt cellar and the 3rd piece-rate system in the 3rd piece-rate system, and two
Carry out electrodialysis in the electrodialysis plant that liquid in individual tank pumps into by force (forcing) pump in the 3rd piece-rate system respectively to separate, separate
Light phase saline afterwards is back in the light salt cellar in the 3rd piece-rate system, and concentrated phase saline is back to the dense salt cellar in the 3rd piece-rate system
In；Light phase saline in the light salt cellar in the 3rd piece-rate system, measures electrical conductivity and is not higher than 0.1ms/cm, by this light phase salt
Water is reclaimed, and becomes recycle-water, or continue to pump into carry out in the electrodialysis plant in the 3rd piece-rate system electrodialysis separate, position
Measure the electrical conductivity in concentrated phase saline in the conductivity meter after the dense salt cellar in the 3rd piece-rate system, be not less than 100ms/cm and then will
Strong brine is passed through in the second buffer tank, otherwise continues to pump into and carries out electrodialysis in the electrodialysis plant in the 3rd piece-rate system and divide
From.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110818597A (en) * | 2019-10-09 | 2020-02-21 | 江苏远洋药业股份有限公司 | Purification method of taurine refined mother liquor |
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| CN112645848A (en) * | 2020-12-29 | 2021-04-13 | 江苏远洋药业股份有限公司 | Optimized process for preparing taurine by ethanolamine method |
| CN112794546A (en) * | 2020-12-25 | 2021-05-14 | 江苏远洋药业股份有限公司 | Method for treating ammonium-containing wastewater generated in taurine production |
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| CN110818597A (en) * | 2019-10-09 | 2020-02-21 | 江苏远洋药业股份有限公司 | Purification method of taurine refined mother liquor |
| CN110818597B (en) * | 2019-10-09 | 2021-11-19 | 江苏远洋药业股份有限公司 | Purification method of taurine refined mother liquor |
| CN112479943A (en) * | 2020-11-17 | 2021-03-12 | 江苏远洋药业股份有限公司 | Taurine crystal purification method |
| CN112499849A (en) * | 2020-11-17 | 2021-03-16 | 江苏远洋药业股份有限公司 | Method for recycling taurine production waste liquid |
| CN112794546A (en) * | 2020-12-25 | 2021-05-14 | 江苏远洋药业股份有限公司 | Method for treating ammonium-containing wastewater generated in taurine production |
| CN112794546B (en) * | 2020-12-25 | 2022-09-13 | 江苏远洋药业股份有限公司 | Method for treating ammonium-containing wastewater generated in taurine production |
| CN112645848A (en) * | 2020-12-29 | 2021-04-13 | 江苏远洋药业股份有限公司 | Optimized process for preparing taurine by ethanolamine method |
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