Chromatographic concentration membrane purification device

Abstract

The utility model relates to a chromatographic concentration membrane purification device, which is characterized in that a concentration membrane, a heavy phase decoloration tank, a chromatographic water inlet tank, a concentration membrane cleaning tank, an acid tank, an alkali tank and the like are additionally arranged behind a feeding tank, feed liquid enters the feeding tank, the feeding tank enters the concentration membrane through a metering pump, and after being purified by the concentration membrane, the feed liquid enters the heavy phase decoloration tank; a light phase enters a chromatographic water inlet tank, and a heavy phase enters a heavy phase decolorizing tank; part of the feed liquid flows back into the feeding tank for secondary purification; pure water, an acid tank and an alkali tank are connected into the concentration membrane cleaning tank, cleaning water is pumped into the concentration membrane, part of the cleaning water flows back into the concentration membrane cleaning tank after cleaning, and part of the cleaning water is discharged into a sewage system; after the psicose is subjected to chromatographic separation, the psicose feed liquid is further concentrated and purified, so that the consumption of steam is reduced, the cost of a subsequent working section is reduced, and the concentration of a final product is improved.

Description

Technical Field

[0001] The utility model relates to a purification device, in particular to a chromatographic concentration membrane purification device. Background Art

[0002] With the huge market demand for allulose, the quality requirements for allulose in industrial production are becoming increasingly higher, while the contradiction between the low output and low purity of allulose and market demand is becoming increasingly prominent.

[0003] In the traditional allulose production process, the concentration of allulose after chromatography is too low, which affects the further purification in subsequent steps, resulting in low efficiency and low purity, which seriously affects the quality of the allulose product. The disadvantages are:

[0004] ① Traditional concentration requires frequent replacement of filter cloth, and the replacement process requires manual operation;

[0005] ② The labor cost increases, and it is time-consuming and labor-intensive, which seriously affects product quality and the continuity of subsequent production. Summary of the Invention

[0006] In order to solve the above technical problems, the utility model is a chromatographic concentration membrane purification device, and its technical solution is:

[0007] It includes a feed tank, one side of which is provided with a discharge port, which is connected to the feed port on one side of the concentration membrane through a conveying pipe; it also includes a concentration membrane, a chromatography water inlet tank, a heavy phase decolorization tank, a concentration membrane cleaning tank, an acid tank and an alkali tank.

[0008] A heavy phase outlet is provided on the other side of the concentration membrane and is connected to the heavy phase decolorization tank through a delivery pipe; a light phase outlet is provided on the top of the concentration membrane and is connected to the chromatographic water inlet tank through a delivery pipe; an outlet is also provided on the top of the concentration membrane and is connected to the top inlet of the feed tank through a delivery pipe;

[0009] An inlet and an outlet are respectively provided at the bottom of the concentration membrane, and the outlet of the concentration membrane is connected to the inlet at the top of the concentration membrane cleaning tank through a delivery pipe. The top of the concentration membrane cleaning tank is also provided with a pure water inlet, an acid tank inlet and an alkali tank inlet, and they are respectively connected to the pure water outlet, the acid tank outlet and the alkali tank outlet through delivery pipes;

[0010] There is an outlet at the bottom of the concentrated membrane cleaning tank, which is divided into two paths through a conveying pipe, one path is discharged to the sewage tank, and the other path flows back to the bottom inlet of the concentrated membrane.

[0011] Furthermore, the feed tank output pipe, the acid tank output pipe, the alkali tank output pipe and the concentrated membrane cleaning tank output pipe are all provided with metering pumps.

[0012] Furthermore, control valves are respectively installed on the pure water output pipe, the delivery pipe connecting the concentration membrane and the feed tank, the delivery pipe connecting the concentration membrane and the concentration membrane cleaning tank, the output pipe connecting the concentration membrane cleaning tank and the sewage tank, and the delivery pipe between the concentration membrane cleaning tank and the concentration membrane.

[0013] Furthermore, on the output pipe between the concentrated membrane cleaning tank and the concentrated membrane, along the output direction, a control valve is arranged behind the metering pump.

[0014] The beneficial effects of the utility model are as follows: the utility model is a chromatographic concentration membrane purification device, which adds a concentration membrane, a heavy phase decolorization tank, a chromatographic water inlet tank, a concentration membrane cleaning tank, an acid tank, an alkali tank, etc. after the feed tank. The feed liquid enters the feed tank, and the feed tank enters the concentration membrane through a metering pump. After the concentration membrane is purified; the light phase enters the chromatographic water inlet tank, and the heavy phase enters the heavy phase decolorization tank; part of the feed liquid returns to the feed tank for secondary purification; the concentration membrane cleaning tank is connected to pure water, an acid tank, and an alkali tank, and the cleaning water is pumped into the concentration membrane. After cleaning, part of it returns to the concentration membrane cleaning tank, and part is discharged into the sewage system; after satisfying the chromatographic separation of allulose, the allulose feed liquid is further concentrated and purified, reducing the steam consumption, thereby reducing the cost of subsequent work sections and improving the concentration of the final product. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the utility model;

[0016] As shown in the figure, 1 is the feed tank, 2 is the concentration membrane, 3 is the chromatography water inlet tank, 4 is the heavy phase decolorization tank, 5 is the concentration membrane cleaning tank, 6 is the acid tank, 7 is the alkali tank, 8 is the metering pump, and 9 is the control valve. DETAILED DESCRIPTION

[0017] The pores on the surface of traditional concentration membranes are too large, and the filtered liquid still contains a large amount of pigments, inorganic salts, and a large amount of aldehydes, which contain many impurities. The utility model is a chromatographic concentration membrane purification device, as shown in the figure, including a feed tank 1, a concentration membrane 2, a chromatographic water inlet tank 3, a heavy phase decolorization tank 4, a concentration membrane cleaning tank 5, an acid tank 6, and an alkali tank 7. A concentration membrane, heavy phase decolorization tank, chromatography water inlet tank, concentration membrane cleaning tank, acid tank, alkali tank, etc. are added after the feed tank. The feed liquid enters the feed tank, and then enters the concentration membrane through a metering pump. After purification by the concentration membrane; the light phase enters the chromatography water inlet tank, and the heavy phase enters the heavy phase decolorization tank; part of the feed liquid returns to the feed tank for secondary purification; the concentration membrane cleaning tank is connected to pure water, acid tank, and alkali tank, and the cleaning water is pumped into the concentration membrane. After cleaning, part of it returns to the concentration membrane cleaning tank, and part is discharged into the sewage system; after satisfying the chromatographic separation of allulose, the allulose feed liquid is further concentrated and purified, reducing steam consumption, thereby reducing the cost of subsequent work sections and improving the concentration of the final product.

[0018] After chromatographic separation of allulose, the feed liquid enters the feed tank 1, and then enters the concentration membrane 2 through the metering pump. After purification by the concentration membrane 2; the light phase enters the chromatography water inlet tank 3, and the heavy phase enters the heavy phase decolorization tank 4; part of the feed liquid returns to the feed tank 1 for secondary purification; the concentration membrane cleaning tank 5 is connected to the pure water, acid tank 6, and alkali tank 7, and the cleaning water is pumped into the concentration membrane 2. After cleaning, part of it returns to the concentration membrane cleaning tank 5, and part is discharged into the sewage system; the metering pump 8 and various control valves 9 are connected to the PLC automatic control device, and signals are given through the PLC to control each control valve and metering pump.

[0019] In actual application, after the chromatographic separation of allulose is completed, the separated heavy phase liquid enters the feed tank 1, enters the concentration membrane 2 through the metering pump, and after purification, the light phase and heavy phase are separated. The light phase enters the chromatographic water inlet tank 3, and the heavy phase enters the heavy phase decolorization tank 4. There are six concentration columns in the concentration membrane 2, which are used alternately. The working concentration membrane 2 is connected to the feed tank 1, and the non-working concentration membrane 2 is connected to the concentration membrane cleaning tank 5. The PLC automatic control device is used throughout the process, and the system will automatically perform chromatographic concentration membrane purification.

[0020] Used in this example:

[0021] The feed tank is a steel-lined plastic vertical storage tank with a capacity of 9.42m 2 ;

[0022] The concentrating membrane was FM-Sep-001;

[0023] The concentrated membrane cleaning tank is a CIP tank with a radius of 2m, a height of 3m and a volume of 9.42m 2 ;

[0024] The heavy phase decolorization tank is a steel-lined plastic vertical storage tank with a volume of 9.42m 2 ;

[0025] The chromatographic water inlet tank is a steel-lined plastic vertical storage tank with a capacity of 9.42m 2 ;

[0026] The acid tank is the Jiangnan dosing box MC-100L, with a capacity of 100L;

[0027] The alkali tank is the Jiangnan dosing box MC-100L with a capacity of 100L.

[0028] The production process of this utility model:

[0029] The feed liquid enters the feed tank, and the feed tank enters the concentration membrane through the metering pump. After purification by the concentration membrane; the light phase enters the chromatographic water inlet, and the heavy phase enters the heavy phase decolorization tank; part of the feed liquid returns to the feed tank for secondary purification; the metering pump and various valves are connected to the PLC automatic control device.

[0030] According to calculations based on actual operating conditions, after using the utility model, the allulose content in the slurry is increased from 8% to 25%, which can save steam usage and reduce production costs.

[0031] According to the specific gravity calculation of different concentrations,

[0032] (6*25%*1.10551-6*8%*1.03176)*285*24*350=2.3865 million yuan

[0033] Allulose has a Baume degree of 6°Be′;

[0034] The content of allulose before using the utility model is 8%;

[0035] After using the utility model, the allulose content is 25%;

[0036] The specific gravity of allulose before using the present invention is 1.03176;

[0037] The specific gravity of allulose after using the utility model is 1.10551;

[0038] The unit price of steam is 285 yuan / ton;

[0039] The daily production of allulose is 24 tons;

[0040] The number of days for producing allulose per year is 350 days.

[0041] The cost of steam can be reduced by 2.3865 million yuan each year.

[0042] Therefore, the utility model can reduce production costs by a total of RMB 2.3865 million per year.

[0043] Compared with traditional purification technology, the advantages of this utility model are:

[0044] (1) The chromatographic concentration membrane adopts the principle of reverse osmosis technology. Reverse osmosis is a reverse migration movement of osmosis. It is a separation method that separates the solute and solvent in the solution by means of the selective interception effect of the semipermeable membrane under pressure. Reverse osmosis technology has been widely used in the purification and concentration of various liquids. The most common application example is in the water treatment process, where reverse osmosis technology is used to remove impurities such as inorganic ions, bacteria, viruses, organic matter and colloids in the feed liquid to increase the concentration of the feed liquid;

[0045] (2) Since the heavy phase separated from the allulose chromatography is difficult to reuse, the use of a chromatographic concentration membrane can increase the allulose content in the liquid from 8% to 25%, reducing production costs;

[0046] (3) Under the action of reverse osmosis, impurities such as aldehydes and inorganic salts in the feed liquid can be intercepted, the output feed liquid has higher purity, more feed liquid can be reused, and the product quality and output are improved;

[0047] (4) Using chromatographic concentration membrane, six concentration columns work alternately, and the whole process is controlled by PLC automatic control device, which is simple to operate and reduces labor costs.

[0048] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A chromatographic concentration membrane purification device, comprising a feed tank (1), wherein a discharge port is provided on one side of the feed tank (1), characterized in that: The discharge port is connected to the feed port on one side of the concentration membrane (2) through a conveying pipe; the concentration membrane (2), a chromatographic water inlet tank (3), a heavy phase decolorization tank (4), a concentration membrane cleaning tank (5), an acid tank (6) and an alkali tank (7) are also included. A heavy phase discharge port is provided on the other side of the concentration membrane (2) and is connected to the heavy phase decolorization tank (4) through a delivery pipe; a light phase discharge port is provided on the top of the concentration membrane (2) and is connected to the chromatographic water inlet tank (3) through a delivery pipe; an outlet is also provided on the top of the concentration membrane and is connected to the top inlet of the feed tank (1) through a delivery pipe; An inlet and an outlet are respectively provided at the bottom of the concentration membrane (2), the outlet of the concentration membrane (2) is connected to the top inlet of the concentration membrane cleaning tank (5) through a delivery pipe, and the top of the concentration membrane cleaning tank (5) is also provided with a pure water inlet, an acid tank inlet and an alkali tank inlet, which are respectively connected to the pure water outlet, the acid tank outlet and the alkali tank outlet through delivery pipes; An outlet is provided at the bottom of the concentrated membrane cleaning tank (5), and is divided into two paths through a delivery pipe, one path being discharged to the sewage tank, and the other path being refluxed to the bottom inlet of the concentrated membrane (2).

2. A chromatographic concentration membrane purification device according to claim 1, characterized in that: The output pipe of the feed tank (1), the output pipe of the acid tank (6), the output pipe of the alkali tank (7) and the output pipe of the concentrated membrane cleaning tank (5) are all provided with a metering pump (8).

3. A chromatographic concentration membrane purification device according to claim 2, characterized in that: Control valves are respectively installed on the pure water output pipe, the delivery pipe connecting the concentration membrane (2) and the feed tank (1), the delivery pipe connecting the concentration membrane (2) and the concentration membrane cleaning tank (5), the output pipe connecting the concentration membrane cleaning tank (5) and the sewage tank, and the delivery pipe between the concentration membrane cleaning tank (5) and the concentration membrane (2).

4. A chromatographic concentration membrane purification device according to claim 3, characterized in that: On the output pipe between the concentrated membrane cleaning tank (5) and the concentrated membrane (2), a control valve (9) is arranged in front of the metering pump (8) along the output direction.

Images