CN219314665U - Low-energy-consumption amino acid concentration and recovery system - Google Patents
Low-energy-consumption amino acid concentration and recovery system Download PDFInfo
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- CN219314665U CN219314665U CN202320853798.9U CN202320853798U CN219314665U CN 219314665 U CN219314665 U CN 219314665U CN 202320853798 U CN202320853798 U CN 202320853798U CN 219314665 U CN219314665 U CN 219314665U
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Abstract
The utility model provides a low-energy consumption amino acid concentration recovery system, wherein a raw material liquid contains 1-3% of amino acid with molecular weight of 50-150Da, the raw material liquid is concentrated to 10-15% of amino acid concentration under high pressure by a high-pressure membrane separation device, then the high-pressure membrane separation device is used for utilizing high interception rate of organic matters by a separation membrane and high transmembrane pressure difference generated by the high concentration of the concentrated raw material liquid, and under the condition of selecting a loose separation membrane, the amino acid is further concentrated under low pressure condition, so that the mass fraction of the amino acid is increased to 20%. The process avoids concentration polarization phenomenon caused by continuous high-pressure membrane separation, breaks through the concentration bottleneck of the traditional membrane process, reduces about 40% of process energy consumption, and realizes low-energy concentration recovery of amino acid.
Description
Technical Field
The utility model belongs to the technical field of special material recovery and water treatment, and particularly relates to a low-energy-consumption amino acid concentration recovery system.
Background
At present, most of conventional wastewater can be treated properly by the water treatment technology, along with the rapid development of the water treatment technology, the application range is gradually expanded, and aiming at the difficult-to-treat wastewater containing various organic matters and inorganic matters generated in the pharmaceutical and chemical industry, the problem that the conventional equipment cannot be solved or the materials cannot be recovered efficiently by a simple treatment system is the core for evaluating whether the wastewater has market prospect. The amino acid is an intermediate or a final product with high recovery value in the current pharmaceutical industry, and because the molecular structure is generally complex, the concentration and extraction efficiency is low under the conventional pressure by a membrane separation technology, and as the concentration multiple is increased, the membrane flux can be obviously reduced, even water cannot be produced, so that high-power concentration and even membrane hole blocking cannot be performed. Patent CN2020111529601 proposes to realize high-power concentration by high pressure, but the patent is to realize high-efficiency concentration by high-pressure membrane separation technology for high-salt wastewater, and in the case of a solution containing organic components, flux is further affected, and membrane pollution is more serious. Therefore, although the concentration multiple can be improved to a certain extent by improving the operation pressure, the energy consumption is also increased sharply, and the treatment cost is higher than the value of the product; in addition, as the pressure increases, concentration polarization also causes permeation of the target product, resulting in a decrease in yield. Therefore, by further understanding the permeation performance and related kinetic analysis of amino acid in the membrane separation system, the mutual engagement and cooperation between the equipment are improved and optimized, the product yield is ensured, the energy consumption problem is solved, and the design of a low-cost and high-efficiency treatment system which is superior to the traditional equipment is an urgent need at present.
Disclosure of Invention
Aiming at the defects in the prior art, the utility model provides a low-energy-consumption amino acid concentration and recovery system for 50-150Da molecular weight amino acid, which can realize efficient recovery of products by using a simplified equipment combination.
For this purpose, the above object of the present utility model is achieved by the following technical solutions:
the low-energy-consumption amino acid concentration and recovery system is characterized by comprising a raw water tank, a booster pump, a high-pressure membrane separation device, a normal pressure pump, a low-pressure membrane separation device and a concentrated water tank, wherein a water outlet of the raw water tank is connected with a water inlet of the high-pressure membrane separation device through the booster pump, a concentrated water inlet of the high-pressure membrane separation device is connected with a water inlet of the low-pressure membrane separation device through the normal pressure pump, a water inlet of a water production tank is connected, a water production inlet of the high-pressure membrane separation device is directly discharged or recycled, a water production inlet of the low-pressure membrane separation device is connected with the raw water tank, and a concentrated water inlet of the low-pressure membrane separation device is connected with the concentrated water tank; the power of the booster pump is more than or equal to the power of the lift pump, the internal part of the high-pressure membrane separation device is N sections, N=1, the interception molecular weight of the used membrane element is less than or equal to 100Da, the interception rate of sodium chloride is more than or equal to 99.7%, the internal part of the low-pressure nanofiltration device is M sections, M=1, the interception molecular weight of the used membrane element is 100-200Da, and the interception rate of sodium chloride is 99-99.5%.
The utility model can also adopt or combine the following technical proposal when adopting the technical proposal:
preferably, the top of the original water tank is provided with an opening and is provided with a top cover, and the water inlet and the water outlet of the original water tank are arranged on the side wall of the bottom of the water tank.
Preferably, the operating pressure of the low-pressure membrane separation device is more than or equal to 4Mpa, and the specific value can be adjusted according to the concentration of feed liquid and the requirement of water outlet.
Preferably, the operating pressure of the low-pressure membrane separation device is less than or equal to 3Mpa, and the specific value can be adjusted according to the concentration of feed liquid and the requirement of water outlet.
Preferably, the devices are connected by adopting UPVC or stainless steel pipelines.
Preferably, the recovery rate of the amino acid in the final concentrate tank is more than or equal to 99%.
The utility model provides a low-energy consumption amino acid concentration recovery system, wherein a raw material liquid contains 1-3% of 50-150Da amino acid, the raw material liquid is concentrated to 10-15% of amino acid concentration under a high pressure condition through a high-pressure membrane separation device, then the high-pressure membrane separation device utilizes high interception rate of organic matters by a separation membrane and high transmembrane pressure difference generated by the high concentration of the concentrated raw material liquid, and under the condition of selecting a loose separation membrane, the amino acid is further concentrated under the low pressure condition, so that the mass fraction of the amino acid is increased to 20%. The process avoids concentration polarization phenomenon caused by continuous high-pressure membrane separation, breaks through the concentration bottleneck of the traditional membrane process, reduces about 40% of process energy consumption, and realizes low-energy concentration recovery of amino acid.
Drawings
FIG. 1 is a connection relation and a simple construction diagram of a low-energy-consumption amino acid concentration and recovery system provided by the utility model;
FIG. 2 is a diagram showing the connection and simplified construction of example 3 (comparative example) according to the present utility model;
Detailed Description
The utility model will be described in further detail with reference to the drawings and specific embodiments.
Example 1
The low-energy-consumption amino acid concentration and recovery system comprises a raw water tank 1, a booster pump 5, a high-pressure membrane separation device 2, a normal pressure pump 6, a low-pressure membrane separation device 3 and a concentrated water tank 4, wherein a water outlet 11 of the raw water tank 1 is connected with a water inlet 21 of the high-pressure membrane separation device 2 through the booster pump 5, a water outlet 22 of the high-pressure membrane separation device 2 is detected to be free of amino acid components and can be directly discharged or recycled, a water outlet 23 of the high-pressure membrane separation device 2 is connected with a water inlet 31 of the low-pressure membrane separation device 3 through the normal pressure pump 6, a water outlet 32 of the low-pressure membrane separation device 3 is connected with a water inlet 12 of the raw water tank 1, and a water outlet 33 of the low-pressure membrane separation device 3 is connected with a water inlet 41 of the concentrated water tank;
under the conditions that the concentration of the basic acid of raw material liquid ammonia is 3%, the molecular weight is 100Da, the concentration of the amino acid at the concentrated water port 23 of the high-pressure membrane separation device 2 is 13%, the permeation concentration of the amino acid at the water producing port 32 of the low-pressure membrane separation device 3 is 2%, and the final concentration of the amino acid in the concentrated water tank 4 is 21%, the total energy consumption of the system for treating the amino acid feed liquid under the parameters is 10 kw/ton, and the recovery rate is 99.0%.
Example 2
The low-energy-consumption amino acid concentration and recovery system comprises a raw water tank 1, a booster pump 5, a high-pressure membrane separation device 2, a normal pressure pump 6, a low-pressure membrane separation device 3 and a concentrated water tank 4, wherein a water outlet 11 of the raw water tank 1 is connected with a water inlet 21 of the high-pressure membrane separation device 2 through the booster pump 5, a water outlet 22 of the high-pressure membrane separation device 2 is detected to be free of amino acid components and can be directly discharged or recycled, a water outlet 23 of the high-pressure membrane separation device 2 is connected with a water inlet 31 of the low-pressure membrane separation device 3 through the normal pressure pump 6, a water outlet 32 of the low-pressure membrane separation device 3 is connected with a water inlet 12 of the raw water tank 1, and a water outlet 33 of the low-pressure membrane separation device 3 is connected with a water inlet 41 of the concentrated water tank;
under the conditions that the concentration of the basic acid of raw material liquid ammonia is 2%, the molecular weight is 140Da, the concentration of the amino acid at the water concentration port 23 of the high-pressure membrane separation device 2 is 10%, the permeation concentration of the amino acid at the water production port 32 of the low-pressure membrane separation device 3 is 1%, and the final concentration of the amino acid in the water concentration tank 4 is 20%, the total energy consumption of the system for treating the amino acid feed liquid under the parameters is 8.5 kw/ton,
the recovery rate is 99.5%.
Example 3
The embodiment is a reference example for comparison with the utility model, and adopts a high-pressure membrane separation device with two sections of the same membrane components for concentration recovery, and comprises a raw water tank 1, a booster pump 5, a high-pressure membrane separation device 2, a high-pressure membrane separation device 3 and a concentrated water tank 4, wherein a water outlet 11 of the raw water tank 1 is connected with a water inlet 21 of the high-pressure membrane separation device 2 through the booster pump 5, a water outlet 22 of the high-pressure membrane separation device 2 is detected to be free of amino acid components and can be directly discharged or recycled, a water outlet 23 of the high-pressure membrane separation device 2 is connected with a water inlet 31 of the high-pressure membrane separation device 3, a water outlet 32 of the high-pressure membrane separation device 3 is connected with a water inlet 12 of the raw water tank 1, and a water outlet 33 of the high-pressure membrane separation device 3 is connected with a water inlet 41 of the concentrated water tank;
under the conditions that the concentration of the basic acid of raw material liquid ammonia is 3%, the molecular weight is 140Da, the concentration of the amino acid at the water concentration port 23 of the high-pressure membrane separation device 2 is 12%, the permeation concentration of the amino acid at the water production port 32 of the high-pressure membrane separation device 3 is 4%, and the final concentration of the amino acid in the water concentration tank 4 is 18%, the total energy consumption of the system for treating the amino acid feed liquid under the parameters is 17 kw/ton, and the recovery rate is 98.3%.
As can be seen from the comparison of the embodiment 3 and the embodiments 1-2, the use of the two-stage high-pressure membrane separation device not only increases the permeation of amino acid and affects the recovery rate of the product, but also significantly increases the total energy consumption of the system, so that the recovery rate and the energy consumption can be improved at the same time by organically combining the high-pressure membrane separation device and the low-pressure membrane separation device, and an efficient process is realized.
The above detailed description is intended to illustrate the present utility model by way of example only and not to limit the utility model to the particular embodiments disclosed, but to limit the utility model to the precise embodiments disclosed, and any modifications, equivalents, improvements, etc. that fall within the spirit and scope of the utility model as defined by the appended claims.
Claims (6)
1. The low-energy-consumption amino acid concentration and recovery system is characterized by comprising a raw water tank, a booster pump, a high-pressure membrane separation device, a normal pressure pump, a low-pressure membrane separation device and a concentrated water tank, wherein a water outlet of the raw water tank is connected with a water inlet of the high-pressure membrane separation device through the booster pump, a concentrated water inlet of the high-pressure membrane separation device is connected with a water inlet of the low-pressure membrane separation device through the normal pressure pump, a water inlet of a water production tank is connected, a water production inlet of the high-pressure membrane separation device is directly discharged or recycled, a water production inlet of the low-pressure membrane separation device is connected with the raw water tank, and a concentrated water inlet of the low-pressure membrane separation device is connected with the concentrated water tank; the power of the booster pump is more than or equal to the power of the lift pump, the internal part of the high-pressure membrane separation device is N sections, N=1, the interception molecular weight of the used membrane element is less than or equal to 100Da, the interception rate of sodium chloride is more than or equal to 99.7%, the internal part of the low-pressure nanofiltration device is M sections, M=1, the interception molecular weight of the used membrane element is 100-200Da, and the interception rate of sodium chloride is 99-99.5%.
2. The low energy consumption amino acid concentration and recovery system according to claim 1, wherein the top of the raw water tank is provided with an opening and is provided with a top cover, and the water inlet and the water outlet of the raw water tank are arranged on the side wall of the bottom of the water tank.
3. The low-energy-consumption amino acid concentration and recovery system according to claim 1, wherein the operating pressure of the high-pressure membrane separation device is more than or equal to 4Mpa, and the specific value can be adjusted according to the concentration of feed liquid and the requirement of water outlet.
4. The low-energy-consumption amino acid concentration and recovery system according to claim 1, wherein the operating pressure of the low-pressure membrane separation device is less than or equal to 3Mpa, and the specific value can be adjusted according to the concentration of feed liquid and the requirement of water outlet.
5. The low energy consumption amino acid concentration and recovery system according to claim 1, wherein the devices are connected by a pipeline made of UPVC or stainless steel.
6. The low energy consumption amino acid concentration recovery system according to claim 1, wherein the recovery rate of the amino acid in the final concentrate tank is greater than or equal to 99%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202320853798.9U CN219314665U (en) | 2023-04-17 | 2023-04-17 | Low-energy-consumption amino acid concentration and recovery system |
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| CN202320853798.9U CN219314665U (en) | 2023-04-17 | 2023-04-17 | Low-energy-consumption amino acid concentration and recovery system |
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