Oxalic acid removal and separation device

Abstract

The utility model discloses an oxalic acid removal and separation device which comprises a box body, a liquid inlet pipe and a liquid outlet pipe are respectively mounted at two ends of the box body, a plurality of partition plates are vertically mounted in the box body, an inner cavity of the box body is divided into a plurality of mass transfer cavities by the partition plates, through holes are formed in the partition plates, and the mass transfer cavities are communicated with the through holes. A plurality of limiting plates are uniformly distributed and mounted in the mass transfer cavity in the vertical direction, an ion exchange resin unit is mounted between any two adjacent limiting plates, and a sealing door fixedly covers the maintenance window; the reactor has the beneficial effects that the structure is simple, the reaction is more sufficient, the production process is simple, the production efficiency is high, a plurality of ion exchange resin units convenient to disassemble are arranged in the mass transfer cavities, the ion exchange resin is conveniently and finely replaced, the cost is saved, and the production efficiency is improved. The device is worthy of wide-range popularization and application.

Description

TECHNICAL FIELD

[0001] The utility model relates to oxalic acid separation equipment technical field especially relates to a kind of oxalic acid removal separation devices. BACKGROUND

[0002] Glyoxylic acid is made of glyoxal, nitric acid, hydrochloric acid, glyoxal is oxidized into glyoxylic acid and oxalic acid under acidic conditions by nitric acid, the traditional way of removing oxalic acid is separated from glyoxylic acid solution by concentrating, cooling and centrifuging, and glyoxylic acid with 1.50% oxalic acid content can be obtained, and then calcium carbonate is added to react to generate calcium oxalate precipitate to remove oxalic acid or remove oxalic acid by crystallization purification, but the former introduces new impurity calcium ion, and the latter takes a long time, has low yield and high cost, so the utility model provides a device for removing oxalic acid from glyoxylic acid using macroporous resin, to improve production efficiency. SUMMARY

[0003] The utility model aims at providing a kind of oxalic acid removal separation devices, to solve the technical problems of long production time and low production efficiency in the process of removing oxalic acid from glyoxylic acid in prior art.

[0004] The utility model relates to a kind of oxalic acid removal separation devices, which comprises a box, liquid inlet pipe and liquid outlet pipe are installed at both ends of the box respectively, a plurality of partition plates are vertically installed in the box, the inner cavity of the box is divided into a plurality of mass transfer cavities by the partition plates, through holes are formed in the partition plates, a plurality of limiting plates are uniformly distributed in the mass transfer cavities along the vertical direction, ion exchange resin units are installed between any two adjacent limiting plates, a plurality of maintenance windows matched with the mass transfer cavities are formed in the box, and sealing doors are fixedly covered on the maintenance windows.

[0005] Further, the through holes on any adjacent partition plate are misaligned.

[0006] Further, the ion exchange resin unit comprises an open-top-and-bottom containing box, wire mesh plates are fixedly covered on both ends of the containing box, and resin particles are contained in the containing box.

[0007] Further, the maintenance windows and the sealing doors, and the containing boxes and the wire mesh plates are connected by bolts, and sealing rings are arranged between the maintenance windows and the sealing doors.

[0008] Further, the resin particles are macroporous weakly basic styrene anion exchange resins.

[0009] Further, the containing box and the inner wall of the mass transfer cavity are in sliding fit, and sealing ring pads are sleeved on the containing box.

[0010] Further, the several partition plates are connected in the container box.

[0011] The utility model discloses the beneficial effect has: the utility model discloses simple structure, design several mass transfer cavities of snake shape connection make the reaction more fully, and the production process is simple, and production efficiency is high, and several ion exchange resin units convenient for dismounting are installed in mass transfer cavity, and the ion exchange resin of fine change is convenient, and the cost is saved, and it is worth widely using. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the perspective view of the utility model;

[0013] Figure 2 It is the internal structure section view of the utility model;

[0014] Figure 3 It is the perspective view of ion exchange resin unit;

[0015] Figure 4 It is the section view of ion exchange resin unit;

[0016] In the drawing, box 1, baffle 2, limit plate 3, mass transfer cavity 4, through -hole 5, liquid inlet pipe 6, liquid outlet pipe 7, container box 8, wire mesh plate 9, sealing ring pad 10, partition plate 11, sealing door 12, access window 13, resin granule 14. DETAILED DESCRIPTION:

[0017] As Figure 1 And Figure 2 Shown, a kind of oxalate removal separation device, it includes box 1, liquid inlet pipe 6, liquid outlet pipe 7 are respectively installed at the both ends of the box 1, several baffle plates 2 are vertically installed in the box 1, the inner cavity of the box 1 is divided into several mass transfer cavities 4 by the baffle plate 2, through -hole 5 is formed in the baffle plate 2, several limit plates 3 are evenly installed in the mass transfer cavity 4 along vertical direction, ion exchange resin unit is installed between any two adjacent limit plates 3, several access windows 13 matched with the mass transfer cavity 4 are formed in the box 1, sealing door 12 is fixedly covered on the access window 13, the access window 13 and the sealing door 12 are connected by bolt, the through -hole 5 on any adjacent baffle plate 2 is staggered arrangement, so that each mass transfer cavity 4 is connected to form the mass transfer space of snake shape, improves mass transfer efficiency.

[0018] As Figure 3 And Figure 4As shown, the ion exchange resin unit includes an open-top-and-bottom containing box 8, a wire mesh plate 9 is fixedly covered on the upper and lower ends of the containing box 8, and resin particles 14 are contained in the containing box 8; the containing box 8 and the wire mesh plate 9 are connected by bolts, the resin particles 14 are selected from macroporous weak base styrene anion exchange resin, the containing box 8 is in sliding fit with the inner wall of the mass transfer cavity 4, a sealing ring gasket 10 is sleeved on the containing box 8, the sealing ring gasket 10 can well seal the gap between the containing box 8 and the inner wall of the mass transfer cavity 4, and the liquid can flow along the set mass transfer path; a plurality of partition plates 11 are connected in the containing box 8, so that the strength of the containing box 8 is improved.

[0019] In specific work, the oxalic acid impurity-containing glyoxylic acid solution enters the box body 1 from the liquid inlet pipe 6, sequentially passes through the ion exchange resin units in the mass transfer cavities 4, the oxalate ions in the solution are replaced by the hydroxyl ions in the macroporous weak base styrene anion exchange resin, the purpose of removing oxalic acid is achieved, and when the ion exchange resin units need to be replaced after long-time use, fine replacement can be performed according to actual conditions (the service life of the ion exchange resin units in the upstream mass transfer cavities 4 is shorter than that of the ion exchange resin units in the downstream mass transfer cavities 4).

[0020] The above is only a preferred example of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement, improvement and the like made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. An oxalate removal separation device, characterized by: It include box (1), install liquid inlet pipe (6), liquid outlet pipe (7) respectively at both ends of the box (1), install several partitions (2) vertically in the box (1), the partition (2) separates the inner chamber of the box (1) into several mass transfer chambers (4), the partition (2) is provided with through hole (5), install several limiting plates (3) along the vertical direction in the mass transfer chamber (4), install ion exchange resin unit between any two adjacent limiting plates (3), open several maintenance window (13) on the box (1) and match the mass transfer chamber (4), the sealing door (12) is fixed on the maintenance window (13) and covers.

2. An oxalate removal and separation device according to claim 1, characterized in that: The through hole (5) on any adjacent partition (2) is staggered arrangement.

3. The oxalate removal and separation device of claim 1, wherein: The ion exchange resin unit includes the containing box (8) that is open in the upper and lower, the wire mesh plate (9) is fixed and covers in the upper and lower ends of the containing box (8), the resin particles (14) are contained in the containing box (8).

4. An oxalate removal and separation device according to claim 3, wherein: The maintenance window (13) and the sealing door (12) between, the containing box (8) and the wire mesh plate (9) between are connected through bolt, the sealing ring is arranged between the maintenance window (13) and the sealing door (12).

5. The oxalate removal and separation device of claim 3, wherein: The resin particles (14) are macroporous weak base styrene anion exchange resin.

6. An oxalate removal and separation device according to claim 3, characterized in that: The containing box (8) and the inner wall of the mass transfer chamber (4) are sliding fit, the sealing ring pad (10) is sleeved on the containing box (8).

7. The oxalate removal and separation device of claim 3, wherein: Several division plates (11) are connected in the containing box (8).

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