CN219540307U - Hydrolysis liquid neutralization sedimentation device for xylose production - Google Patents

Abstract

The utility model discloses a hydrolysate neutralization sedimentation device for xylose production, wherein a flow guide pipe is arranged at the upper part of an inner cavity of a neutralization tank, one end of the flow guide pipe is connected with a material adding port, a spray head for uniformly spraying an additive is arranged at the other end of the flow guide pipe, a sedimentation cavity with an inverted cone structure is arranged at the lower part of the inner cavity of the neutralization tank, an inverted cone structure is arranged at the lower part of the sedimentation cavity, a collecting cavity for collecting calcium sulfate crystals in a concentrated manner is arranged at the side wall of the collecting cavity, and a liquid outlet for discharging neutralization liquid is arranged at the side wall of the collecting cavity; the method can not only realize the full stirring and neutralization of the hydrolysate, but also can carry out high-efficiency centralized collection on calcium sulfate crystals generated in the neutralization process, effectively reduce the content of calcium sulfate in the xylose liquid in the subsequent xylose liquid discharging process after the neutralization, lighten the load of subsequent cation resin exchange, and provide powerful support for the efficient processing and production of xylitol.

Description

Hydrolysis liquid neutralization sedimentation device for xylose production

Technical Field

The utility model relates to the technical field of xylose production equipment, in particular to a hydrolysate neutralization sedimentation device for xylose production.

Background

The xylose is prepared from raw materials such as corncob and bagasse by hydrolysis, neutralization, decolorization, ion exchange, evaporation concentration, crystallization and drying, wherein the neutralization process is to add light calcium carbonate into hydrolysate, neutralize with hydrolysate to form calcium sulfate precipitate, thereby achieving the purpose of reducing acidity and reducing the workload of the later ion exchange process, however, at present, during the neutralization operation of xylose, most of workers manually pour the light calcium carbonate into hydrolysate, then stir and neutralize in a neutralization tank, and the existing neutralization tank has the following defects in the operation and use processes:

firstly, when light calcium carbonate is added into the existing neutralization tank, the light calcium carbonate is directly poured into the neutralization tank manually, so that the light calcium carbonate cannot be fully and uniformly contacted with the hydrolysate, the light calcium carbonate is easily agglomerated and unevenly distributed, and the neutralization liquid can locally form an alkali-passing area to cause xylose loss and influence the later neutralization effect;

secondly, the lower parts of the existing neutralization tanks are of inverted cone structures, and the structures facilitate discharge of xylose neutralization liquid, but calcium sulfate crystals in the neutralization process are also precipitated at the bottom and discharged together with the discharge of the xylose neutralization liquid, so that the content of the calcium sulfate in the xylose neutralization liquid exceeds the standard, and the later processing and use are affected;

thirdly, the conventional calcium sulfate crystals precipitated in the neutralization tank are difficult to clean and discharge in daily life, and the neutralization processing of the subsequent hydrolysate is easy to be adversely affected.

Disclosure of Invention

In order to overcome the defects in the background technology, the utility model discloses a hydrolysis liquid neutralization sedimentation device for xylose production, which not only can realize the full stirring neutralization of hydrolysis liquid, but also can carry out high-efficiency centralized collection on calcium sulfate crystals generated in the neutralization process, effectively reduce the content of calcium sulfate in xylose liquid in the subsequent xylose liquid discharging process after the neutralization, lighten the load of subsequent cation resin exchange and provide powerful support for the efficient processing production of xylitol.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a hydrolysate neutralization sedimentation device for xylose production, including the neutralization tank, neutralization tank upper portion one side is equipped with annotates the liquid mouth, neutralization tank upper portion still is equipped with the motor and adds the material mouth, the output of motor is equipped with the pivot of penetrating into neutralization tank inner chamber, be equipped with the stirring leaf that is used for stirring neutralization liquid on the axle body of pivot, neutralization tank inner chamber upper portion is equipped with the honeycomb duct, honeycomb duct one end is connected with adding the material mouth, the honeycomb duct other end is equipped with the shower nozzle that is used for evenly spraying the additive, neutralization tank inner chamber lower part is for being the subsidence chamber of back taper structure, subsidence chamber lower part is equipped with back taper structure, and be used for concentrating the collecting chamber of collecting to the calcium sulfate crystal, the collecting chamber lateral wall is equipped with the leakage fluid dram that is used for discharging neutralization liquid, the collecting chamber bottom is equipped with the sediment mouth that is used for clearing up the calcium sulfate crystallization.

Further, the lower part of the rotating shaft is provided with inclined stirring blades which are adjacent to and parallel to the inner wall of the sedimentation cavity.

Further, the lower part of the inclined stirring blade is provided with a scraping hair for scraping the residual calcium sulfate crystal on the inner wall of the sedimentation cavity.

Further, the lower end of the rotating shaft is flush with the bottom of the sedimentation cavity.

Further, the lower part of the inner wall of the liquid outlet is provided with an inclined plane matched with the inner wall of the collecting cavity.

Further, a sealing cover is detachably arranged on the slag discharging port at the bottom of the collecting cavity.

Furthermore, one end of the flow guide pipe, on which the spray head is arranged, is inclined downwards.

Compared with the prior art, the utility model has the beneficial effects that: by arranging the honeycomb duct and the spray head, the addition of the additive can be conveniently and effectively completed, and the additive can be fully and uniformly mixed with the hydrolysate;

by arranging the inclined stirring blades and scraping hairs, residual calcium sulfate crystals on the inner wall of the sedimentation cavity can be scraped, so that the calcium sulfate crystals fully contact with the hydrolysate for reaction, and the subsequent collection of the calcium sulfate crystals is facilitated;

the liquid outlet is arranged on the side wall of the collecting cavity, so that calcium sulfate crystals precipitated in the collecting cavity are always positioned at the bottom of the collecting cavity in the process of discharging the neutralization liquid, and the calcium sulfate crystals and the neutralization liquid are prevented from being discharged together to influence the later processing production;

the slag discharge port and the sealing cover are arranged, so that the calcium sulfate crystals can be conveniently cleaned and collected, and powerful support is provided for the subsequent neutralization and stirring of the hydrolysate;

the method can not only realize the full stirring and neutralization of the hydrolysate, but also can carry out high-efficiency centralized collection on calcium sulfate crystals generated in the neutralization process, effectively reduce the content of calcium sulfate in the xylose liquid in the subsequent xylose liquid discharging process after the neutralization, lighten the load of subsequent cation resin exchange, and provide powerful support for the efficient processing and production of xylitol.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

fig. 2 is a schematic view of the structure of the collecting chamber of the present utility model.

In the figure: 1. a liquid injection port; 2. a motor; 3. a material adding port; 4. a flow guiding pipe; 5. a spray head; 6. a rotating shaft; 7. a neutralization tank; 8. stirring the leaves; 9. a sedimentation chamber; 10. oblique stirring blades; 11. brushing; 12. a sedimentation chamber; 13. a liquid outlet; 14. a slag discharge port; 15. sealing cover; 16. and (5) an inclined plane.

Description of the embodiments

In the description, it should be understood that, if there is an azimuth or positional relationship indicated by terms such as "upper", "lower", "front", "rear", "left", "right", etc., the drawings merely correspond to the drawings of the present utility model, and in order to facilitate description of the present utility model, it is not necessary to indicate or imply that the apparatus or element to be referred to has a specific azimuth.

Referring to fig. 1-2 of the specification, the present utility model provides a technical scheme:

the first embodiment is a hydrolysis liquid neutralization sedimentation device for xylose production, which comprises a neutralization tank 7, wherein one side of the upper part of the neutralization tank 7 is provided with a liquid injection port 1, the upper part of the neutralization tank 7 is also provided with a motor 2 and a material adding port 3, the output end of the motor 2 is provided with a rotating shaft 6 penetrating into the inner cavity of the neutralization tank 7, the shaft body of the rotating shaft 6 is provided with a stirring blade 8 for stirring the neutralization liquid, the upper part of the inner cavity of the neutralization tank 7 is provided with a guide pipe 4, one end of the guide pipe 4 is connected with the material adding port 3, the other end of the guide pipe 4 is provided with a spray head 5 for uniformly spraying an additive, in order to ensure that the additive in the guide pipe 4 can fully flow out, one end of the spray head 5 is downwards inclined, the lower part of the inner cavity of the neutralization tank 7 is a sedimentation cavity 9 with an inverted cone structure, the lower part of the sedimentation cavity 9 is provided with an inverted cone structure, and a collecting cavity 12 for collecting calcium sulfate crystals in a concentrated manner is arranged, the side wall of the collecting cavity 12 is provided with a liquid outlet 13 for discharging neutralizing liquid, the liquid outlet 13 is arranged on the side wall of the collecting cavity 12, so that when xylose neutralizing liquid is discharged from the liquid outlet 13, calcium sulfate crystals precipitated on the inner bottom surface of the collecting cavity 12 are always positioned in the collecting cavity 12, the content of the calcium sulfate crystals is greatly reduced in the xylose neutralizing liquid discharging process, convenience is provided for the subsequent processing of the xylose neutralizing liquid, the lower end of the rotating shaft 6 is flush with the bottom of the sedimentation cavity 9, the collecting cavity 12 can fully collect the calcium sulfate crystals, the calcium sulfate crystals in the collecting cavity 12 are prevented from floating, a slag discharging port 14 for cleaning the calcium sulfate crystals is arranged at the bottom of the collecting cavity 12, a sealing cover 15 is detachably arranged on the slag discharging port 14 at the bottom of the collecting cavity 12, after the xylose neutralizing liquid is used, the calcium sulfate crystals precipitated in the collecting cavity 12 can be cleaned, support is provided for the subsequent neutralization processing of xylose liquid.

In the second embodiment, during the neutralization process of xylose liquid, calcium sulfate crystals in the liquid roll down to the collecting cavity 12 through the inner wall of the sedimentation cavity 9 to finish sedimentation and collection, and then part of calcium sulfate crystals still remain on the inner wall of the sedimentation cavity 9, in order to clean the residual calcium sulfate crystals on the inner wall of the sedimentation cavity 9 and improve the neutralization quality of xylose liquid, the lower part of the rotating shaft 6 is provided with an inclined stirring blade 10 adjacent to and parallel to the inner wall of the sedimentation cavity 9, the lower part of the inclined stirring blade 10 is provided with a scraping hair 11 for scraping the residual calcium sulfate crystals on the inner wall of the sedimentation cavity 9, the rotating shaft 6 rotates close to the inner wall of the sedimentation cavity 9 in the rotation process, and the scraping hair 11 scrapes the residual calcium sulfate crystals on the inner wall of the sedimentation cavity 9 to make the residual calcium sulfate crystals fully contact with xylose liquid and then precipitate in the collecting cavity 12.

In the third embodiment, since the liquid outlet 13 is disposed on the side wall of the collecting cavity 12, the calcium sulfate crystals are easily accumulated on the inner wall of the inner end of the liquid outlet 13 during the precipitation process of the calcium sulfate crystals, so that the calcium sulfate crystals are discharged along with the subsequent discharge of xylose neutralization liquid, in order to reduce the accumulation of the calcium sulfate crystals on the inner wall of the liquid outlet 13, the lower part of the inner wall of the liquid outlet 13 is provided with the inclined surface 16 matched with the inner wall of the collecting cavity 12, the calcium sulfate crystals can fall to the bottom plate of the collecting cavity 12 through the inclined surface 16 during the precipitation process of the calcium sulfate crystals, and in addition, the residual calcium sulfate crystals on the inclined surface 16 are relatively high in resistance caused by the inclined surface 16 during the discharge of xylose neutralization liquid, and are not easy to discharge along with the xylose neutralization liquid, so that the content of calcium sulfate in the xylose neutralization liquid is greatly reduced.

The utility model has not been described in detail in the prior art, and it is apparent to those skilled in the art that the utility model is not limited to the details of the above-described exemplary embodiments, but that the utility model can be embodied in other specific forms without departing from the spirit or essential characteristics thereof; the above-described embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims (7)

1. A hydrolysate neutralization sedimentation device for xylose production, includes neutralization tank (7), and neutralization tank (7) upper portion one side is equipped with annotates liquid mouth (1), its characterized in that: the neutralization tank (7) upper portion still is equipped with motor (2) and adds feed port (3), the output of motor (2) is equipped with the pivot (6) of penetrating into neutralization tank (7) inner chamber, be equipped with on the shaft body of pivot (6) and be used for stirring neutralizing liquid stirring leaf (8), neutralization tank (7) inner chamber upper portion is equipped with honeycomb duct (4), honeycomb duct (4) one end is connected with adding feed port (3), honeycomb duct (4) other end is equipped with shower nozzle (5) that are used for evenly spraying the additive, neutralization tank (7) inner chamber lower part is sedimentation chamber (9) that are the back taper structure, sedimentation chamber (9) lower part is equipped with back taper structure, and be used for carrying out concentrated collection chamber (12) of collecting to the calcium sulfate crystal, collection chamber (12) lateral wall is equipped with liquid outlet (13) that are used for discharging neutralization liquid, collection chamber (12) bottom is equipped with and is used for clear up sediment mouth (14) of calcium sulfate crystal.

2. The hydrolysate neutralization settling device for xylose production as claimed in claim 1, wherein: the lower part of the rotating shaft (6) is provided with an inclined stirring blade (10) which is adjacent to and parallel with the inner wall of the sedimentation cavity (9).

3. The hydrolysate neutralization settling device for xylose production as claimed in claim 2, wherein: the lower part of the inclined stirring blade (10) is provided with a scraping hair (11) for scraping residual calcium sulfate crystals on the inner wall of the sedimentation cavity (9).

4. The hydrolysate neutralization settling device for xylose production as claimed in claim 2, wherein: the lower end of the rotating shaft (6) is flush with the bottom of the sedimentation cavity (9).

5. The hydrolysate neutralization settling device for xylose production as claimed in claim 1, wherein: the lower part of the inner wall of the liquid outlet (13) is provided with an inclined plane (16) matched with the inner wall of the collecting cavity (12).

6. The hydrolysate neutralization settling device for xylose production as claimed in claim 1, wherein: a sealing cover (15) is detachably arranged on a slag discharging port (14) at the bottom of the collecting cavity (12).

7. The hydrolysate neutralization settling device for xylose production as claimed in claim 1, wherein: one end of the flow guide pipe (4) provided with the spray head (5) is inclined downwards.