CN212188888U

CN212188888U - Sodium sulfite solution configuration groove

Info

Publication number: CN212188888U
Application number: CN201921566315.7U
Authority: CN
Inventors: 李得银; 罗登彦
Original assignee: Yibin Haifeng Herui Co ltd
Current assignee: Yibin Haifeng Herui Co ltd
Priority date: 2019-09-19
Filing date: 2019-09-19
Publication date: 2020-12-22
Anticipated expiration: 2029-09-19

Abstract

The utility model discloses a sodium sulfite solution preparation tank, the preparation tank includes the stirred tank and the liquid containing groove that set up from top to bottom, stirred tank and liquid containing groove separate through the baffle, still include agitating unit, agitating unit includes the compressed air pipe connector mouth at compressed air coil pipe and stirred tank top, and compressed air pipe gets into the stirred tank by the compressed air pipe connector and is connected with the compressed air coil pipe, the compressed air coil pipe level sets up in the stirred tank lower part, be equipped with the trompil on the compressed air coil pipe, the opening of trompil is located below the diameter of coil pipe horizontal direction; and the top parts of the stirring tank and the liquid containing tank are respectively provided with a vent. The utility model discloses a configuration groove adopts the compressed air coil pipe as agitating unit, lets in compressed air in the compressed air coil pipe during its stirring, and compressed air gets into the stirred tank bottom by the trompil, and the sodium sulfite solid restless that will stir the tank bottom gets up, makes the solid dissolve fast and prepares into solution.

Description

Sodium sulfite solution configuration groove

Technical Field

The utility model relates to a configuration device of solution that can the homodisperse after dissolving, especially a sodium sulfite solution configuration groove.

Background

In the process of producing sodium hydroxide by the ion membrane method, light brine is an intermediate product of an anode chamber of an electrolytic cell. Since the dilute brine and chlorine gas are both generated in the anode chamber, the dilute brine contains a large amount of dissolved free chlorine (ClO)^-) Free chlorine is highly oxidative and corrodes pipes, equipment, oxidation resins, etc., and thus is removed before the dilute brine is recycled to the brine system for salt formation, and it is currently common to remove the free chlorine by reacting the reducing substance sodium sulfite with the free chlorine. The sodium sulfite preparation tank commonly used by the existing chlor-alkali enterprises is composed of two ground pools, one is a preparation pool and the other is a buffer pool; the preparation process of the sodium sulfite comprises the steps of pouring sodium sulfite into a preparation tank when the liquid level of a buffer tank is lower than a set value, adding pure water, stirring, overflowing to the buffer tank, sampling and measuring the specific gravity of the sodium sulfite solution in the buffer tank, and if the specific gravity is too high, continuously adding the pure water in the buffer tank until the specific gravity is detected to be within an index range; if the concentration is low, the concentration is required to be sent to a configuration groove through a pump backflow valve to be configured continuously so as to increase the concentration to an index value. The sodium sulfite solution prepared by the method has unstable concentration, is easy to cause the phenomena of pipeline blockage, large ORP fluctuation of a dechlorination system and the like, seriously influences the production stability, and simultaneously has complicated operation process and great labor intensity of workers. The Chinese utility model patent with publication number CN206381856U discloses a sodium sulfite preparation tank, which comprises a preparation tank shell, wherein the inner cavity of the preparation tank shell is divided into a stirring tank and a buffer storage tank which are distributed up and down through a partition plate, the top end of the stirring tank is provided with a feed inlet and a pure water pipe, and a stirring shaft is arranged in the stirring tank; a feeding pipe is arranged at the lower part of the side wall of the stirring tank, the other end of the feeding pipe is communicated to the upper part of the side wall of the buffer storage tank, and a feeding pump is arranged on the feeding pipe; sodium sulfite pipe is installed to buffer tank bottom, and the device effectively improves production efficiency, but it adopts the (mixing) shaft to stir, because of the sodium nitrite that adds is located the stirred tank bottom, thereby needs great frequency or longer time during the stirring just can move sodium sulfite by the hosepipe and reach the stirring for the stirring is crossedThe energy consumption is high, the loss of the stirring pump is large, the stirring pump is easy to damage, and the maintenance cost of the damaged stirring pump is high.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a sodium sulfite solution configuration groove is provided, the agitating unit energy consumption of solving among the prior art sodium sulfite preparation groove is high, fragile problem.

The utility model provides a technical scheme that its technical problem adopted is: a sodium sulfite solution configuration tank comprises a stirring tank and a liquid containing tank which are arranged up and down, wherein the stirring tank and the liquid containing tank are separated by a partition plate, and the top end of the stirring tank is provided with a feed inlet and a pure water pipe; the lower part of the side wall of the stirring tank is provided with a tapping hole, the upper part of the side wall of the liquid containing tank is provided with a feeding hole, and the tapping hole is connected with the feeding hole through a pipeline; the lower part of the side wall of the liquid containing groove is provided with a discharge hole, and the stirring device comprises a compressed air coil pipe and a compressed air pipe connector at the top of the stirring groove, a compressed air pipe enters the stirring groove from the compressed air pipe connector and is connected with the compressed air coil pipe, the compressed air coil pipe is horizontally arranged at the lower part of the stirring groove, the compressed air coil pipe is provided with an opening, and the opening of the opening faces to a direction lower than the horizontal direction; and the top parts of the stirring tank and the liquid containing tank are respectively provided with a vent.

The opening of trompil is located below the diameter of coil pipe horizontal direction, and the opening orientation of trompil is less than the horizontal direction promptly, and is down or slant is down for spun compressed air spouts the sodium sulfite solid to the stirred tank bottom, makes its agitation, thereby realizes the stirring effect, if the opening is up, the stirring effect weakens, and can lead to the solution blowout in the stirred tank. The number of openings can be set as desired.

Furthermore, the compressed air coil is fixed on the partition plate through the support frame and is close to but not in contact with the partition plate. The compressed air coil pipe is close to but does not contact the baffle, mainly stirs for the solid of stirred tank bottom more fast, if compressed air coil pipe sets up too high, will reduce stirring efficiency, and the distance of compressed air coil pipe and baffle can be 1-10 cm.

Further, the stirring tank is communicated with a vent at the top of the liquid containing tank.

Furthermore, the configuration groove is a cylindrical storage groove, and the partition plate is circular.

Further, the compressed air coil comprises a circular shape wound by a compressed air pipe along the edge of the partition plate, and a compressed air pipe arranged on at least one diameter of the coil wound into the circular shape.

Further, the compressed air pipe interface is close to the side wall of the stirring tank.

Furthermore, a drain port is arranged at the bottom of the liquid containing groove, and a liquid level meter is arranged at the lower part of the liquid containing groove.

Furthermore, the feed inlet on the top end of the stirring tank is funnel-shaped and is arranged in the center of the top of the stirring tank.

Furthermore, the configuration groove adopts DCS to monitor, adjust and control.

The utility model has the advantages that: the utility model discloses a configuration groove adopts compressed air coil pipe as agitating unit, lets in compressed air in the compressed air coil pipe during its stirring, and compressed air gets into the stirred tank bottom from the trompil, restlesss the sodium sulfite solid of stirred tank bottom, makes the solid dissolve fast and prepares into solution; the preparation process is simple to operate, the concentration of the obtained sodium sulfite solution is stable and controllable, the continuous and stable operation of a dechlorination system and an electrolysis system is powerfully ensured, and the production efficiency is effectively improved; the adopted compressed air stirring mode has low energy consumption, saves resources and improves economic benefits.

Drawings

FIG. 1 is a schematic diagram of an apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic view of a compressed air coil according to an embodiment of the present invention;

labeled as: 1-configuration tank bottom plate, 2-liquid containing tank, 3-drain port, 4-level meter, 5-manhole, 6-configuration tank side wall, 7-partition plate, 8-support frame, 9-compressed air coil, 10-communicating pipe, 11-configuration tank cover plate, 12-charging port, 13-stirring tank, 14-compressed air pipe interface, 15-pure water pipe, 16-liquid discharging hand valve, 17-filter, 18-program control valve and 19-discharging port.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

Example (b):

as shown in fig. 1 and fig. 2, the sodium sulfite solution preparation tank is a cylindrical storage tank, the preparation tank comprises a stirring tank and a liquid containing tank 2 which are arranged up and down, the stirring tank and the liquid containing tank 2 are separated by a circular partition plate, and the partition plate is positioned at the middle upper position of the preparation tank, even if the volume of the liquid containing tank 2 is larger than that of the stirring tank 13; the top end of the stirring tank 13 is provided with a feed inlet 12 and a pure water pipe 15; the lower part of the side wall of the stirring tank 13 is provided with a tapping hole, the upper part of the side wall of the liquid containing tank 2 is provided with a feeding hole, and the tapping hole is connected with the feeding hole through a pipeline; a discharge port 19 is arranged at the lower part of the side wall of the liquid containing groove 2; the stirring device comprises a compressed air coil pipe 9 and a compressed air pipe connector 14 arranged at the top of a stirring groove 13, the compressed air pipe connector 14 is close to the side wall of the stirring groove 13, a compressed air pipe enters the stirring groove 13 from the compressed air pipe connector 14 and is connected with the compressed air coil pipe 9, the compressed air coil pipe 9 is horizontally arranged at the lower part of the stirring groove 13, the compressed air coil pipe 9 comprises a circular shape formed by winding the compressed air pipe along the edge of a partition plate 7 and a compressed air pipe arranged on one diameter of the formed circular coil pipe, the compressed air coil pipe 9 is provided with an opening, the opening of the opening is positioned below the diameter of the coil pipe in the horizontal direction, and the compressed air coil pipe 9 is fixed on the partition plate through a support frame 8 and is close; and vent holes are respectively formed in the tops of the stirring tank 13 and the liquid containing tank 2, and the stirring tank 13 is communicated with the vent holes in the top of the liquid containing tank 2.

The bottom of the liquid containing groove 2 is provided with a drain port 3, and the lower part of the liquid containing groove 2 is provided with a liquid level meter 4. The feed inlet on the top end of the stirring tank 13 is funnel-shaped and is arranged at the center of the top of the stirring tank 13. The configuration groove adopts DCS to monitor and regulate, wherein the configuration groove and all interfaces are made of 304 stainless steel.

When preparing the sodium sulfite solution, firstly opening a valve on a pure water pipe 15 at the top of the preparation tank to add water with a certain liquid level into the stirring tank 13, then pouring a certain amount of solid sodium sulfite into the stirring tank 13 from a sodium sulfite feeding port 12 at the top of the stirring tank 13, simultaneously opening a valve on a compressed air pipe interface 14 to stir the solution, wherein the pressure of compressed air is about 0.4MPa, closing the valve on the pure water pipe 15 when the liquid level of the solution in the stirring tank 13 reaches a set value, and stopping adding pure water; and closing the valve on the compressed air pipe connector 14 after the solid sodium sulfite is completely dissolved, wherein the sodium sulfite solution is prepared to be qualified.

When the liquid level meter 4 on the bottom liquid containing tank 2 is at a low position, the program control valve 18 is opened (the manual liquid discharging valve 16 is normally opened), the prepared solution in the stirring tank 13 automatically flows into the liquid containing tank 2 from the feed inlet through the liquid discharging port, meanwhile, the liquid containing tank 2 and the stirring tank 13 are connected with the emptying port through the communicating pipe 10, and the emptying is carried out to ensure the pressure of the preparation tank; when the liquid level of the liquid containing tank 2 reaches a set value, the program control valve 18 is closed, and the sodium sulfite solution in the liquid containing tank 2 is delivered to a required position through a pump connected with a sodium sulfite discharge port 19.

Claims

1. A sodium sulfite solution configuration tank comprises a stirring tank and a liquid containing tank which are arranged up and down, wherein the stirring tank and the liquid containing tank are separated by a partition plate, and the top end of the stirring tank is provided with a feed inlet and a pure water pipe; the lower part of the side wall of the stirring tank is provided with a tapping hole, the upper part of the side wall of the liquid containing tank is provided with a feeding hole, and the tapping hole is connected with the feeding hole through a pipeline; the lower part of the side wall of the liquid containing groove is provided with a discharge hole, and is characterized in that: the stirring device comprises a compressed air coil pipe and a compressed air pipe connector at the top of the stirring tank, a compressed air pipe enters the stirring tank from the compressed air pipe connector and is connected with the compressed air coil pipe, the compressed air coil pipe is horizontally arranged at the lower part of the stirring tank, an opening is formed in the compressed air coil pipe, and the opening of the opening faces to a direction lower than the horizontal direction; and the top parts of the stirring tank and the liquid containing tank are respectively provided with a vent.

2. The sodium sulfite solution preparation tank according to claim 1, wherein: the compressed air coil is fixed on the partition plate through the support frame and is close to but not in contact with the partition plate.

3. The sodium sulfite solution preparation tank according to claim 1, wherein: and the stirring tank is communicated with a vent at the top of the liquid containing tank.

4. The sodium sulfite solution preparation tank according to claim 1, wherein: the configuration groove is a cylindrical storage groove, and the partition plate is circular.

5. The sodium sulfite solution preparation tank according to claim 4, wherein: the compressed air coil comprises a circular shape formed by winding a compressed air pipe along the edge of the partition plate and a compressed air pipe arranged on at least one diameter of the coil pipe formed by winding the compressed air pipe into the circular shape.

6. The sodium sulfite solution preparation tank according to claim 1, wherein: the compressed air pipe interface is close to the side wall of the stirring tank.

7. The sodium sulfite solution preparation tank according to claim 1, wherein: the bottom of the liquid containing groove is provided with a drain port, and the lower part of the liquid containing groove is provided with a liquid level meter.

8. The sodium sulfite solution preparation tank according to claim 1, wherein: the feed inlet on the top end of the stirring tank is funnel-shaped and is arranged at the center of the top of the stirring tank.

9. The sodium sulfite solution preparation tank according to claim 1, wherein: the configuration groove adopts DCS to monitor, adjust and control.