Ammonia transfer device for sodium taurate

Abstract

The ammonia transfer device comprises hollow fibers, a containing cavity, a synthesis device, a first material pipe, a second material pipe, a third material pipe and a fourth material pipe, the middle of the hollow fiber is arranged in the containing cavity, a first feeding port and a first discharging port are formed in the two ends of the hollow fiber respectively, and a second feeding port and a second discharging port are formed in the two ends of the containing cavity respectively. The first material pipe is communicated with the first feeding port, the second material pipe is communicated with the first discharging port, the third material pipe is communicated with the second feeding port, and the fourth material pipe is communicated with the second discharging port and the synthesizing device. According to the utility model, an ammonia water solution of sodium taurate can flow in the hollow fiber hydrophobic membrane, sodium isethionate flows outside the hollow fiber hydrophobic membrane, the flowing directions of the ammonia water solution of sodium taurate and the sodium isethionate are opposite, and ammonia gas released by the ammonia water solution of sodium taurate is absorbed by a sodium isethionate solution after penetrating through the hydrophobic membrane, so that ammonia transfer is completed. The ammonia concentration of the ammonia water solution of sodium taurate is reduced, and the energy consumption required for separating ammonia is reduced.

Description

Technical Field

[0001] The utility model relates to the field of taurine production, in particular to an ammonia transfer device for sodium taurine. Background Art

[0002] The current taurine production process includes the step of synthesizing sodium taurine by ammonolysis reaction of sodium isethionate and ammonia in a synthesis tower. In order to improve the reaction conversion rate, excessive ammonia is added to the raw material solution in actual production, and the molar concentration of ammonia can reach several to dozens of times the molar concentration of sodium isethionate. The ammonia in the sodium taurine solution must be completely removed and recovered before the acidification reaction.

[0003] After the sodium taurine ammonia solution is heated, ammonia gas can be evaporated in the evaporator, and the separated ammonia gas can be reused in the production of sodium taurine. It takes a lot of energy to separate ammonia gas from the sodium taurine ammonia solution. Utility Model Content

[0004] The purpose of the utility model is to overcome the above-mentioned shortcomings and provide an ammonia transfer device for sodium taurine which can reduce the energy consumption of sodium taurine production.

[0005] To achieve the above purpose, the technical solution of the utility model is: a sodium taurine ammonia transfer device, including a hollow fiber, a containing cavity, a synthesis device, a first material pipe, a second material pipe, a third material pipe, and a fourth material pipe;

[0006] The middle part of the hollow fiber is arranged in the accommodating cavity, the two ends of the hollow fiber are respectively provided with a first feed inlet and a first discharge port, and the two ends of the accommodating cavity are respectively provided with a second feed inlet and a second discharge port;

[0007] The first material pipe is connected to the first material feed port, the second material pipe is connected to the first material discharge port, the third material pipe is connected to the second material feed port, and the fourth material pipe is connected to the second material discharge port and the synthesis device.

[0008] The hollow fiber is a hydrophobic membrane that allows ammonia to pass through, but sodium taurine and sodium isethionate cannot pass through. The ammonia solution of sodium taurine flows inside the hydrophobic membrane of the hollow fiber, and sodium isethionate flows outside the hydrophobic membrane of the hollow fiber. The two flow directions are opposite. The ammonia released by the ammonia solution of sodium taurine passes through the hydrophobic membrane and is absorbed by the sodium isethionate solution, completing the ammonia transfer. The sodium isethionate solution that has absorbed ammonia can be used as a raw material for the production of sodium taurine.

[0009] Preferably, it also includes a plurality of ammonia transfer rods, each of which includes a tube body, a hollow fiber, a first joint, and a second joint; a cavity is provided in the tube body, the first joint and the second joint are respectively provided at two ends of the tube body and form a receiving cavity with the cavity, the two ends of the hollow fiber extend to the first joint and the second joint respectively, the first joint is provided with a first feed port and a second feed port, and the second joint is provided with a first feed port and a second feed port;

[0010] The first feed port of each ammonia transfer rod is connected to the first feed pipe, the first discharge port is connected to the second feed pipe, the second feed port is connected to the third feed pipe, and the second discharge port is connected to the fourth feed pipe.

[0011] By increasing the number of ammonia transfer rods, the requirement for the diameter of the ammonia transfer rods is reduced. Each ammonia transfer rod may have one or more hollow fibers, but the number will not be too large. The sodium isethionate aqueous solution flows in the ammonia transfer rod and can fully and evenly contact each hollow fiber. The ammonia transferred from the hollow fiber can be quickly taken away, thereby improving the ammonia transfer efficiency inside and outside the hollow fiber.

[0012] Preferably, an inner cavity is provided in the box body, and two partitions are provided in the upper and lower directions of the inner cavity, and the two partitions divide the inner cavity into an upper chamber, a middle chamber, and a lower chamber arranged in sequence, and the middle chamber is a accommodating chamber; there are several hollow fibers, and the two ends of each hollow fiber respectively pass through the two partitions and extend into the upper chamber and the lower chamber, the first material pipe is connected to the upper chamber, the second material pipe is connected to the lower chamber, the third material pipe is connected to the lower part of the accommodating chamber, and the fourth material pipe is connected to the upper part of the accommodating chamber.

[0013] Preferably, it further comprises a shell, a fifth material pipe and a sixth material pipe, a sixth chamber is arranged in the shell, the middle parts of a plurality of ammonia transfer rods are arranged in the sixth chamber, and two ends of the ammonia transfer rods extend from the upper end and the lower end of the shell respectively; the fifth material pipe is connected to the upper part of the sixth chamber, and the sixth material pipe is connected to the lower part of the sixth chamber. Temperature will affect the efficiency of ammonia transfer from the ammonia aqueous solution of sodium taurate to the sodium isethionate aqueous solution, the fifth material pipe and the sixth material pipe are used for inputting and outputting heat exchange medium respectively, the ammonia transfer rod is immersed in the heat exchange medium in the chamber, and the ammonia transfer efficiency in the ammonia transfer rod is controlled by adjusting the temperature of the heat exchange medium.

[0014] Preferably, it also includes a first frame and a second frame arranged at intervals, the first frame is provided with a first chamber and a second chamber, the second frame is provided with a third chamber and a fourth chamber, the middle part of the ammonia transfer rod is arranged between the first frame and the second frame, one end of the ammonia transfer rod passes through the second chamber and extends into the first chamber, a positioning block is provided in the fourth chamber, the other end of the ammonia transfer rod passes through the third chamber and extends into the fourth chamber and supports the positioning block; the first material pipe and the first feed port are both connected to the first chamber, the second material pipe and the first discharge port are both connected to the fourth chamber, the third material pipe and the second feed port are both connected to the third chamber, and the fourth material pipe and the second discharge port are both connected to the fourth chamber. One end of the ammonia transfer rod can be inserted into the second chamber and the first chamber of the first frame in excess, and then the ammonia transfer rod is moved to the other end so that the other end is inserted into the third chamber and the fourth chamber in the second frame, which is convenient and quick to install.

[0015] By adopting the above technical solution, the utility model has the following beneficial effects: the utility model can make the sodium taurine ammonia solution flow inside the hollow fiber hydrophobic membrane, and the sodium isethionate flow outside the hollow fiber hydrophobic membrane, and the two flow directions are opposite, and the ammonia released by the sodium taurine ammonia solution passes through the hydrophobic membrane and is absorbed by the sodium isethionate solution, thereby completing the ammonia transfer. The ammonia concentration of the sodium taurine ammonia solution is reduced, and the energy consumption required for separating ammonia is reduced. The sodium isethionate solution that absorbs ammonia can be used as a raw material for producing sodium taurine. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of Example 1 of the utility model;

[0017] Figure 2 This is a schematic structural diagram of the ammonia transfer rod of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the ammonia transfer rod of the utility model when it is installed in the housing;

[0019] Figure 4 This is a schematic diagram of the structure of Example 2 of the present utility model;

[0020] Figure 5 This is a schematic structural diagram of Example 3 of the present utility model.

[0021] Description of main reference numerals:

[0022] Hollow fiber 1; first feed inlet 11; first discharge outlet 12; accommodating chamber 2; second feed inlet 21; second discharge outlet 22; first feed pipe 31; second feed pipe 32; third feed pipe 33; fourth feed pipe 34; fifth feed pipe 35; sixth feed pipe 36; synthesis device 4; first frame 51; second frame 53; box 53; partition 54; upper chamber 55; lower chamber 56; shell 6; sixth chamber 61; first chamber 71; second chamber 72; third chamber 73; fourth chamber 74; positioning block 741; ammonia transfer rod 10; first joint 101; second joint 102; tube body 103. DETAILED DESCRIPTION

[0023] The present invention is further described below with reference to the accompanying drawings and specific embodiments.

[0024] Embodiment 1:

[0025] like Figure 1-Figure 2 As shown, the utility model is an ammonia transfer device for sodium taurine, comprising a synthesis device 4, a first material pipe 31, a second material pipe 32, a third material pipe 33, a fourth material pipe 34, and a plurality of ammonia transfer rods 10.

[0026] like Figure 2 As shown, each ammonia transfer rod 10 includes a tube body 103, a hollow fiber 1, a first joint 101, and a second joint 102. A cavity is provided in the tube body 103, and the first joint 101 and the second joint 102 are respectively provided at the two ends of the tube body 103 and form a receiving cavity 2 with the cavity. The middle part of the hollow fiber 1 is provided in the receiving cavity 2, and the two ends of the hollow fiber 1 are respectively provided with a first feed port 11 and a first discharge port 12, and the two ends of the receiving cavity 2 are respectively provided with a second feed port 21 and a second discharge port 22. The two ends of the hollow fiber extend to the first joint and the second joint, respectively, the first joint is provided with a first feed port and a second discharge port, and the second joint is provided with a first discharge port and a second feed port.

[0027] The first feed pipe 31 is connected to the first feed port 11 and the feed port of the synthesis device, the second feed pipe 32 is connected to the first feed port 12, the third feed pipe 33 is connected to the second feed port 21, and the fourth feed pipe 34 is connected to the second feed port 22 and the feed port of the synthesis device 4. The first feed port of each ammonia transfer rod is connected to the first feed pipe, the first feed port is connected to the second feed pipe, the second feed port is connected to the third feed pipe, and the second feed port is connected to the fourth feed pipe.

[0028] The hollow fiber is a hydrophobic membrane that allows ammonia to pass through, but sodium taurine and sodium isethionate cannot pass through. The synthesis device can synthesize ammonia and sodium isethionate into sodium taurine. The ammonia solution of sodium taurine flows in the hydrophobic membrane of the hollow fiber, and the sodium isethionate flows outside the hydrophobic membrane of the hollow fiber. The two flow directions are opposite. The ammonia released by the ammonia solution of sodium taurine passes through the hydrophobic membrane and is absorbed by the sodium isethionate solution, completing the ammonia transfer. The sodium isethionate solution that absorbs ammonia can be used as a raw material for producing sodium taurine and sent to the synthesis device 4 for synthesis. The synthesized sodium taurine ammonia solution can be sent to the first feed port through a water pump and a first feed pipe.

[0029] like Figure 3 As shown, on the basis of Example 1, the ammonia transfer device of sodium taurine also includes a shell 6, a fifth material pipe 35 and a sixth material pipe 36, a sixth chamber 61 is provided in the shell 6, the middle parts of a plurality of ammonia transfer rods are provided in the sixth chamber 61, and the two ends of the ammonia transfer rod 10 extend from the upper end and the lower end of the shell 6 respectively; the fifth material pipe 35 is connected to the upper part of the sixth chamber 61, and the sixth material pipe 36 is connected to the lower part of the sixth chamber 61.

[0030] The fifth material pipe and the sixth material pipe are used for inputting and outputting heat exchange medium respectively. The ammonia transfer rod is immersed in the heat exchange medium in the chamber. The ammonia transfer efficiency in the ammonia transfer rod is controlled by adjusting the temperature of the heat exchange medium.

[0031] Embodiment 2:

[0032] like Figure 4 As shown, on the basis of Example 1, the ammonia transfer device of sodium taurine further includes a first frame 51 and a second frame 52 arranged at intervals, a first chamber 71 and a second chamber 72 are provided on the first frame 51, a third chamber 73 and a fourth chamber 74 are provided on the second frame 52, the middle part of the ammonia transfer rod 10 is arranged between the first frame 51 and the second frame 52, and one end of the ammonia transfer rod 10 passes through the second chamber 72 and extends into the first chamber 71. A positioning block 741 is provided in the fourth chamber 74, and the other end of the ammonia transfer rod 10 passes through the third chamber 73 and extends into the fourth chamber 74 and supports the positioning block 741; the first material pipe 31 and the first feed port are both connected to the first chamber, the second material pipe 32 and the first discharge port are both connected to the fourth chamber, the third material pipe 33 and the second feed port are both connected to the third chamber, and the fourth material pipe and the second discharge port are both connected to the fourth chamber.

[0033] One end of the ammonia transfer rod can be inserted into the second chamber and the first chamber in the first frame in excess, and then the ammonia transfer rod can be moved to the other end so that the other end is inserted into the third chamber and the fourth chamber in the second frame, which is convenient and quick to install.

[0034] Embodiment 3:

[0035] like Figure 1 and Figure 5 As shown, the utility model is a sodium taurine ammonia transfer device, comprising a hollow fiber 1, a containing chamber 2, a synthesis device 4, a first material pipe 31, a second material pipe 32, a third material pipe 33, a fourth material pipe 34, and a box body 53.

[0036] The middle part of the hollow fiber 1 is arranged in the accommodating chamber 2, and the two ends of the hollow fiber 1 are respectively provided with a first feed port 11 and a first discharge port 12, and the two ends of the accommodating chamber 2 are respectively provided with a second feed port 21 and a second discharge port 22;

[0037] The first material pipe 31 is connected to the first feed port 11 , the second material pipe 32 is connected to the first discharge port 12 , the third material pipe 33 is connected to the second feed port 21 , and the fourth material pipe 34 is connected to the second discharge port 22 and the synthesis device 4 .

[0038] The box 53 is provided with an inner cavity, and two partitions 54 are provided in the upper and lower directions of the inner cavity. The two partitions 54 divide the inner cavity into an upper chamber 55, a middle chamber, and a lower chamber 54 arranged in sequence, and the middle chamber is a receiving chamber. There are a number of hollow fibers, and the two ends of each hollow fiber 1 pass through the two partitions and extend into the upper chamber and the lower chamber respectively. The first material pipe 31 is connected to the upper chamber, the second material pipe 32 is connected to the lower chamber, the third material pipe 33 is connected to the lower part of the receiving chamber, and the fourth material pipe 34 is connected to the upper part of the receiving chamber. The ammonia solution of sodium taurine flows in the hydrophobic membrane of the hollow fiber, and the sodium isethionate flows outside the hydrophobic membrane of the hollow fiber. The two flow directions are opposite. The ammonia released by the ammonia solution of sodium taurine passes through the hydrophobic membrane and is absorbed by the sodium isethionate solution, completing the ammonia transfer.

[0039] The above-mentioned are only preferred embodiments of the present invention and cannot limit the scope of implementation of the present invention. All equivalent changes and decorations made according to the scope of the patent application of the present invention should still fall within the scope covered by the present invention.

Claims

1. A sodium taurine ammonia transfer device, characterized in that: It includes a hollow fiber, a containing cavity, a synthesis device, a first material pipe, a second material pipe, a third material pipe, and a fourth material pipe; The middle part of the hollow fiber is arranged in the accommodating cavity, the two ends of the hollow fiber are respectively provided with a first feed inlet and a first discharge port, and the two ends of the accommodating cavity are respectively provided with a second feed inlet and a second discharge port; The first material pipe is connected to the first material feed port, the second material pipe is connected to the first material discharge port, the third material pipe is connected to the second material feed port, and the fourth material pipe is connected to the second material discharge port and the synthesis device.

2. The sodium taurine ammonia transfer device according to claim 1, characterized in that: It also includes a plurality of ammonia transfer rods, each of which includes a tube body, a hollow fiber, a first joint, and a second joint; a cavity is provided in the tube body, the first joint and the second joint are respectively provided at two ends of the tube body and form a receiving cavity with the cavity, the two ends of the hollow fiber extend to the first joint and the second joint respectively, the first joint is provided with a first feed port and a second feed port, and the second joint is provided with a first feed port and a second feed port; The first feed port of each ammonia transfer rod is connected to the first feed pipe, the first discharge port is connected to the second feed pipe, the second feed port is connected to the third feed pipe, and the second discharge port is connected to the fourth feed pipe.

3. The sodium taurine ammonia transfer device according to claim 1, characterized in that: It also includes a box body, which has an inner cavity, and two partitions are arranged in the upper and lower directions of the inner cavity, the two partitions divide the inner cavity into an upper chamber, a middle chamber, and a lower chamber arranged in sequence, and the middle chamber is a accommodating chamber; there are a number of hollow fibers, and the two ends of each hollow fiber respectively pass through the two partitions and extend into the upper chamber and the lower chamber, the first material pipe is connected to the upper chamber, the second material pipe is connected to the lower chamber, the third material pipe is connected to the lower part of the accommodating chamber, and the fourth material pipe is connected to the upper part of the accommodating chamber.

4. The sodium taurine ammonia transfer device according to claim 2, characterized in that: It also includes an outer shell, a fifth material pipe and a sixth material pipe. A sixth chamber is arranged in the outer shell. The middle parts of a plurality of ammonia transfer rods are arranged in the sixth chamber. The two ends of the ammonia transfer rods extend from the upper end and the lower end of the outer shell respectively. The fifth material pipe is connected to the upper part of the sixth chamber, and the sixth material pipe is connected to the lower part of the sixth chamber.

5. The sodium taurine ammonia transfer device according to claim 2, characterized in that: It also includes a first frame and a second frame arranged at an interval, the first frame is provided with a first chamber and a second chamber, the second frame is provided with a third chamber and a fourth chamber, the middle part of the ammonia transfer rod is arranged between the first frame and the second frame, one end of the ammonia transfer rod passes through the second chamber and extends into the first chamber, a positioning block is provided in the fourth chamber, the other end of the ammonia transfer rod passes through the third chamber and extends into the fourth chamber and supports the positioning block; the first material pipe and the first feed port are both connected to the first chamber, the second material pipe and the first discharge port are both connected to the fourth chamber, the third material pipe and the second feed port are both connected to the third chamber, and the fourth material pipe and the second discharge port are both connected to the fourth chamber.

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