CN212102425U - Sodium sulfate waste liquid treatment device - Google Patents
Sodium sulfate waste liquid treatment device Download PDFInfo
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- CN212102425U CN212102425U CN202020592872.2U CN202020592872U CN212102425U CN 212102425 U CN212102425 U CN 212102425U CN 202020592872 U CN202020592872 U CN 202020592872U CN 212102425 U CN212102425 U CN 212102425U
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Abstract
The utility model discloses a sodium sulfate waste liquid treatment device, which comprises a sodium sulfate raw material tank, a first dissolution crystallization system, a second dissolution crystallization system, a centrifugal machine and a rectification recovery system; the sodium sulfate liquid outlet is respectively communicated with the liquid inlet of the first elution crystallization system and the liquid inlet of the second elution crystallization system through a three-way valve; the liquid outlet of the first solution crystallization system and the liquid outlet of the second solution crystallization system are communicated with the liquid inlet of the centrifuge through a three-way valve; one port of the rectification recovery system is communicated with a liquid outlet of the centrifugal machine, and the other port of the rectification recovery system is communicated with the solution-out crystallization system. The utility model discloses a sodium sulfate waste liquid dissolves out the crystallization back through first dissolution crystallization system and second dissolution crystallization system, carries out rectification processing in going into rectification recovery system after centrifuge separation pump, and the result that obtains can flow back once more and carry out recycle in first dissolution crystallization system and the second dissolution crystallization system, can realize the serialization of sodium sulfate waste water and handle.
Description
Technical Field
The utility model relates to a sodium sulfate waste liquid treatment technical field specifically is a sodium sulfate waste liquid treatment device.
Background
At present, the treatment technology of waste liquid containing sodium sulfate mainly comprises a chemical method, a membrane concentration treatment method, a thermal treatment process and the like. Patent CN201910384940.8 discloses a method for utilizing sodium sulfate waste liquid, which comprises adding calcium chloride and sodium carbonate in sequence, and treating to obtain sodium chloride solution; the membrane concentration treatment method has low energy consumption, but has high material price and secondary pollution risk of forming high-concentration salt solution; the thermal method treatment process mainly comprises multiple-effect evaporation crystallization, mechanical vapor compression and the like, ZL201611078301.1 discloses a treatment process of sodium sulfate waste liquid, wherein the sodium sulfate waste liquid enters a falling film evaporator after being preheated to produce condensate and sodium sulfate crystals, and the defect is high energy consumption.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a processing apparatus of sodium sulfate waste liquid that can realize the serialization operation of sodium sulfate waste liquid treatment is provided.
The utility model discloses a following technical means realizes solving above-mentioned technical problem:
a sodium sulfate waste liquid treatment device comprises a sodium sulfate raw material tank, a first dissolution crystallization system, a second dissolution crystallization system, a centrifugal machine and a rectification recovery system; a liquid outlet of the sodium sulfate raw material tank is connected with a first liquid outlet pipe, and one port of the first liquid outlet pipe is respectively communicated with a liquid inlet of the first dissolution crystallization system and a liquid inlet of the second dissolution crystallization system through a three-way valve; the liquid outlet of the first solution crystallization system and the liquid outlet of the second solution crystallization system are communicated with the liquid inlet of the centrifuge through a three-way valve; one port of the rectification recovery system is communicated with the liquid outlet of the centrifuge through a pipeline, and the other port of the rectification recovery system is respectively communicated with the first solution-out crystallization system and the second solution-out crystallization system through a three-way valve.
The utility model discloses a be provided with parallelly connected first solventing-out crystallization system and the second solventing-out crystallization system that sets up, first solventing-out crystallization system and second solventing-out crystallization system can use simultaneously, also can use in turn, the mixture after the solventing-out crystallization adds obtains sodium sulfate crystal and filtrating through centrifuge separation, the filtrating pump goes into carries out rectification processing in the rectification recovery system, the product that the rectification obtained can flow back once more and carry out recycle in first solventing-out crystallization system and the second solventing-out crystallization system, can realize the serialization processing of sodium sulfate waste water.
Preferably, the first elution crystallization system comprises a first liquid inlet pipe, a first elution crystallization kettle and a second liquid outlet pipe; one port of the first liquid inlet pipe is connected to the first liquid outlet pipe through a three-way valve, and the other port of the first liquid inlet pipe is communicated with a liquid inlet of the first elution crystallization kettle; the liquid outlet of the first solution-out crystallization kettle is communicated with one port of a second liquid outlet pipe, and the other port of the second liquid outlet pipe is communicated with the liquid inlet of the centrifugal machine through a three-way valve; the utility model discloses a setting of first solventing-out crystallization kettle, solventing-out crystallization kettle can regulate and control crystallization process and provide the crystallization place.
Preferably, the first elution crystallization system further comprises a first stirrer, and the first stirrer is arranged in the first elution crystallization kettle; through be provided with first agitator in first solventing-out crystallization kettle to stir the sodium sulfate waste liquid in the first solventing-out crystallization kettle.
Preferably, the first elution crystallization system further comprises a first valve and a second valve; the first valve is assembled on the first liquid inlet pipe; the second valve is assembled on the second liquid outlet pipe; the first liquid inlet pipe and the second liquid outlet pipe are respectively provided with a valve, so that the circulation of system liquid is convenient to control.
Preferably, the second elution crystallization system comprises a second liquid inlet pipe, a second elution crystallization kettle and a third liquid outlet pipe; one port of the second liquid inlet pipe is connected to the first liquid outlet pipe through a three-way valve, and the other port of the second liquid inlet pipe is communicated with a liquid inlet of the second elution crystallization kettle; a liquid outlet of the second solution-out crystallization kettle is communicated with one port of a third liquid outlet pipe, and the other port of the third liquid outlet pipe is communicated with a liquid inlet of the centrifugal machine through a three-way valve; the utility model discloses a setting of second solventing-out crystallization kettle, solventing-out crystallization kettle can regulate and control crystallization technology and provide the crystallization place.
Preferably, the second elution crystallization system further comprises a second stirrer, and the second stirrer is arranged in the second elution crystallization kettle; through be provided with the second agitator in the second solventing-out crystallization cauldron to stir the sodium sulfate waste liquid in the second solventing-out crystallization cauldron.
Preferably, the second elution crystallization system further comprises a third valve and a fourth valve; the third valve is assembled on the second liquid inlet pipe; the fourth valve is assembled on the third liquid outlet pipe; and valves are respectively assembled on the second liquid inlet pipe and the second liquid outlet pipe, so that the circulation of system liquid is convenient to control.
Injecting high-concentration sodium sulfate wastewater into a sodium sulfate raw material tank, opening a first valve and a third valve simultaneously, enabling the sodium sulfate wastewater to flow out of the sodium sulfate raw material tank, flowing through a first liquid outlet pipe, flowing to a first liquid inlet pipe and a second liquid inlet pipe through the other two outlets of a three-way valve, then respectively flowing into a first elution crystallization kettle and a second elution crystallization kettle, starting the first elution crystallization kettle and the second elution crystallization kettle, starting a first stirrer and a second stirrer to perform elution crystallization, opening a second valve and a fourth valve after the elution crystallization is finished, enabling elution crystallization mixtures to respectively flow into a centrifuge through the first liquid outlet pipe and the second liquid outlet pipe, starting the centrifuge to perform separation, obtaining sodium sulfate crystals and filtrate, pumping the filtrate into a rectification recovery system to perform rectification treatment, enabling the rectified product to flow back into the first elution crystallization kettle and the second elution crystallization kettle again for recycling, can realize continuous treatment of the sodium sulfate wastewater.
Preferably, the rectification recovery system comprises a rectification tower, a recovery water pipe and an ethanol recovery pipe; the liquid inlet of the rectifying tower is communicated with the liquid outlet of the centrifugal machine through a pipeline; one port of the recovery water pipe is connected to the water outlet of the rectifying tower; one port of the ethanol recovery pipe is communicated with a liquid outlet of the rectifying tower, and the other port of the ethanol recovery pipe is respectively communicated with the first elution crystallization kettle and the second elution crystallization kettle through a three-way valve; the utility model discloses a be connected with return water pipe and ethanol recovery tube on the rectifying column, filtrating separates into ethanol and water in the rectifying column, and water can go out from the return water pipe and flow and can recycle, and the first crystallization kettle that dissolves out, the second crystallization kettle that dissolves out are returned to the ethanol recovery tube of separation to be recycled.
Preferably, the rectification recovery system further comprises a steam inlet pipe; one end opening of the steam inlet pipe is connected to the air inlet of the rectifying tower; the steam inlet pipe is connected to the air inlet of the rectifying tower, so that steam can be introduced into the rectifying tower, and the filtrate in the rectifying tower is heated.
Preferably, the rectification recovery system further comprises a fifth valve, a sixth valve and a seventh valve; the fifth valve is assembled on the recovery water pipe; the sixth valve is mounted on the ethanol recovery pipe; the seventh valve is assembled on the steam inlet pipe.
The working principle is as follows: injecting high-concentration sodium sulfate wastewater into a sodium sulfate raw material tank, opening a first valve and a third valve simultaneously, allowing the sodium sulfate wastewater to flow out of the sodium sulfate raw material tank, flowing through a first liquid outlet pipe, flowing to a first liquid inlet pipe and a second liquid inlet pipe through the other two outlets of a three-way valve, then respectively flowing into a first elution crystallization kettle and a second elution crystallization kettle, starting the first elution crystallization kettle and the second elution crystallization kettle, starting a first stirrer and a second stirrer for elution crystallization, opening a second valve and a fourth valve after elution crystallization is finished, allowing elution crystallization mixtures to respectively flow into a centrifuge through the first liquid outlet pipe and the second liquid outlet pipe, starting the centrifuge for separation, separating to obtain sodium sulfate crystals and filtrate, pumping the filtrate into a rectifying tower for rectifying treatment, opening a seventh valve, introducing steam into the rectifying tower through a steam inlet pipe for heating treatment, and (3) rectifying to obtain ethanol and water, evaporating the ethanol and entering an ethanol recovery pipe, opening a sixth valve, enabling the ethanol to respectively flow back to the first elution crystallization kettle and the second elution crystallization kettle through the other two outlets of the three-way valve, then opening a fifth valve, and enabling the rectified water to flow out through a recovery water pipe, thereby realizing continuous treatment of the sodium sulfate wastewater.
The utility model has the advantages that:
1. the utility model discloses a be provided with parallelly connected first solventing-out crystallization system and the second solventing-out crystallization system that sets up, first solventing-out crystallization system and second solventing-out crystallization system can use simultaneously, also can use in turn, the mixture after the solventing-out crystallization adds obtains sodium sulfate crystal and filtrating through centrifuge separation, the filtrating pump goes into the rectification recovery system and separates the processing, the product that the separation obtained can flow back once more and carry out recycle in first solventing-out crystallization system and the second solventing-out crystallization system, can realize the serialization processing of sodium sulfate waste water.
2. The utility model discloses a be connected with return water pipe and ethanol recovery tube on the rectifying column, filtrating separates into ethanol and water in the rectifying column, and water can go out from the return water pipe and flow and can recycle, and the first crystallization kettle that dissolves out, the second crystallization kettle that dissolves out are returned to the ethanol recovery tube of separation to be recycled.
3. The steam inlet pipe is connected to the air inlet of the rectifying tower, so that steam can be introduced into the rectifying tower, and the filtrate in the rectifying tower is heated.
4. Compared with the traditional multiple-effect evaporative crystallization and mechanical vapor compression and other thermal treatment processes, the utility model has the advantages of low energy consumption and low equipment cost.
Drawings
Fig. 1 is a schematic structural diagram of a sodium sulfate waste liquid treatment device according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a first and a second elution crystallization systems according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a rectification recovery system according to an embodiment of the present invention.
The reference numbers illustrate:
1. a sodium sulfate feed tank; 11. a first liquid outlet pipe; 2. a first solventing-out crystallization system; 21. a first liquid inlet pipe; 22. a first elution crystallization kettle; 23. a second liquid outlet pipe; 24. a first valve; 25. a second valve; 26. a first stirrer; 3. a second solventing-out crystallization system; 31. a second liquid inlet pipe; 32. a second elution crystallization kettle; 33. a third liquid outlet pipe; 34. a third valve; 35. a fourth valve; 36. a second agitator; 4. a centrifuge; 5. a rectification recovery system; 51. a rectifying tower; 52. a water recovery pipe; 53. an ethanol recovery pipe; 54. a steam inlet pipe; 55. a fifth valve; 56. a sixth valve; 57. and a seventh valve.
Detailed Description
To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Example one
As shown in fig. 1, the present embodiment discloses a sodium sulfate waste liquid treatment apparatus, which includes a sodium sulfate raw material tank 1, a first elution crystallization system 2, a second elution crystallization system 3, a centrifuge 4, and a rectification recovery system 5.
As shown in fig. 1, a liquid outlet of a sodium sulfate raw material tank 1 is connected with a first liquid outlet pipe 11, the first liquid outlet pipe 11 is connected with a liquid outlet of the sodium sulfate raw material tank 1 through the existing pipeline connection technology, the first liquid outlet pipe 11 can be directly welded and fixed with the liquid outlet of the sodium sulfate raw material tank 1, an internal thread can be arranged on the inner wall of the liquid outlet of the sodium sulfate raw material tank 1, an external thread is arranged on the outer wall of a port of the first liquid outlet pipe 11, and the first liquid outlet pipe 11 is fixedly connected with the liquid outlet of the sodium sulfate raw material tank 1 through a thread; one port of the first liquid outlet pipe 11 is respectively communicated with a liquid inlet of the first dissolution crystallization system 2 and a liquid inlet of the second dissolution crystallization system 3 through a three-way valve; the liquid outlet of the first solution crystallization system 2 and the liquid outlet of the second solution crystallization system 3 are communicated with the liquid inlet of the centrifuge 4 through a three-way valve, the three-way valve is communicated with the inlet and the outlet of each system through the existing pipeline connection mode, and the connected pipelines can adopt the existing metal hose and also can use a plastic pipeline; one port of the rectification recovery system 5 is communicated with a liquid outlet of the centrifuge 4 through a pipeline, the other port of the rectification recovery system 5 is respectively connected with the first dissolution crystallization system 2 and the second dissolution crystallization system 3 through a three-way valve, and the three-way valve and the inlet and the outlet can be connected in the existing welding mode or in the threaded connection mode.
The utility model discloses a be provided with parallelly connected first solventing-out crystal system 2 and the second solventing-out crystal system 3 that sets up, first solventing-out crystal system 2 and second solventing-out crystal system 3 can use simultaneously, also can use in turn, the mixture after the solventing-out crystallization adds obtains sodium sulfate crystal and filtrating through centrifuge 4 separation, carry out rectification processing in the rectification recovery system 5 is gone into to the filtrating pump, the product that the rectification obtained can flow back again and carry out recycle in first solventing-out crystal system 2 and the second solventing-out crystal system 3, can realize the serialization processing of sodium sulfate waste water.
As shown in fig. 1 and fig. 2, the first elution crystallization system 2 includes a first liquid inlet pipe 21, a first elution crystallization kettle 22, and a second liquid outlet pipe 23; one port of the first liquid inlet pipe 21 is welded on the first liquid outlet pipe 11 through a three-way valve and can also be connected in a threaded connection mode, and the other port of the first liquid inlet pipe 21 is welded and fixed with a liquid inlet of the first elution crystallization kettle 22 and can be connected in a threaded connection mode; the liquid outlet of the first dissolution crystallization kettle 22 is fixedly connected with one port of a second liquid outlet pipe 23 in a threaded connection mode, and the other port of the second liquid outlet pipe 23 is fixedly connected with the liquid inlet of the centrifuge 4 in the conventional threaded connection mode through a three-way valve; the utility model discloses a setting of first solventing-out crystallization kettle 22, solventing-out crystallization kettle can regulate and control crystallization process and provide the crystallization place.
As shown in fig. 2, the first elution crystallization system 2 further includes a first valve 24 and a second valve 25; the first valve 24 is installed on the first liquid inlet pipe 21 by adopting the existing bolt connection mode; the second valve 25 is mounted on the second liquid outlet pipe 23 by the existing bolt connection mode; the first liquid inlet pipe 21 and the second liquid outlet pipe 23 are respectively provided with a valve, so that the circulation of system liquid is convenient to control.
As shown in fig. 1 and fig. 2, the second elution crystallization system 3 includes a second liquid inlet pipe 31, a second elution crystallization kettle 32, and a third liquid outlet pipe 33; one end port of the second liquid inlet pipe 31 is welded on the first liquid outlet pipe 11 through a three-way valve and can also be connected in a threaded connection mode, and the other end port of the second liquid inlet pipe 31 is welded and fixed with a liquid inlet of the second elution crystallization kettle 32 and can be connected in a threaded connection mode; the liquid outlet of the second dissolution crystallization kettle 32 is connected with one port of a third liquid outlet pipe 33 in a threaded connection mode, and the other port of the third liquid outlet pipe 33 is connected with the liquid inlet of the centrifuge 4 in a threaded connection mode through a three-way valve; the utility model discloses a setting of second solventing-out crystallization kettle 32, solventing-out crystallization kettle can regulate and control crystallization technology and provide the crystallization place.
As shown in fig. 2, the second elution crystallization system 3 further includes a third valve 34 and a fourth valve 35; the third valve 34 is installed on the second liquid inlet pipe 31 by the existing bolt connection; the fourth valve 35 is mounted on the third liquid outlet pipe 33 by adopting the existing bolt connection mode; the second liquid inlet pipe 31 and the third liquid outlet pipe 33 are respectively provided with valves, so that the circulation of system liquid is convenient to control.
Injecting high-concentration sodium sulfate wastewater into a sodium sulfate raw material tank 1, opening a first valve 24 and a third valve 34 at the same time, allowing the sodium sulfate wastewater to flow out of the sodium sulfate raw material tank 1, flow through a first liquid outlet pipe 11, flow to a first liquid inlet pipe 21 and a second liquid inlet pipe 31 through the other two outlets of the three-way valve, flow into a first elution crystallization kettle 22 and a second elution crystallization kettle 32 respectively, starting the first elution crystallization kettle 22 and the second elution crystallization kettle 32 for elution crystallization, opening a second valve 25 and a fourth valve 35 after elution crystallization is finished, allowing the elution crystallization mixture to flow into a centrifuge 4 through a second liquid outlet pipe 23 and a third liquid outlet pipe 33 respectively, starting the centrifuge 4 for separation to obtain sodium sulfate crystals and filtrate, pumping the filtrate into a rectification recovery system 5 for rectification, and allowing the rectified product to flow back into the first elution crystallization kettle 22 and the second elution crystallization kettle 32 for recovery and utilization again, can realize continuous treatment of the sodium sulfate wastewater.
As shown in fig. 1 and fig. 3, the rectification recovery system 5 includes a rectification column 51, a recovery water pipe 52, and an ethanol recovery pipe 53; a liquid inlet of the rectifying tower 51 is communicated with a liquid outlet of the centrifuge 4 through a pipeline, and two ports of the pipeline can be fixedly welded with the liquid inlet of the rectifying tower 51 and the liquid outlet of the centrifuge 4, or can be fixedly connected in a threaded connection manner; one port of the recovery water pipe 52 is welded on the water outlet of the rectifying tower 51; one port of the ethanol recovery pipe 53 is welded and fixed with a liquid outlet of the rectifying tower 51, and the other port of the ethanol recovery pipe 53 is respectively welded and fixed with the first elution crystallization kettle 22 and the second elution crystallization kettle 32 through a three-way valve; the utility model discloses a be connected with recovery water pipe 52 and ethanol recovery tube 53 on rectifying column 51, the filtrating separates into ethanol and water in rectifying column 51, and water can be followed recovery water pipe 52 and flowed out and can recycle, and the ethanol accessible ethanol recovery tube 53 of separation flows back first solvency out crystallization kettle 22, second solvency out crystallization kettle 32 by recycle.
As shown in fig. 1 and 3, the rectification recovery system 5 further comprises a steam inlet pipe 54; one end opening of the steam inlet pipe 54 is connected with the air inlet of the rectifying tower 51 through screw threads; the steam inlet pipe 54 is connected to the gas inlet of the rectifying tower 51, and is used for introducing steam into the rectifying tower 51 and further heating the filtrate in the rectifying tower 51.
As shown in fig. 3, the distillation recovery system 5 further comprises a fifth valve 55, a sixth valve 56 and a seventh valve 57; the fifth valve 55 is installed on the recovery water pipe 52 by the existing bolt connection; the sixth valve 56 is installed on the ethanol recovery pipe 53 by the existing bolt connection; the seventh valve 57 is mounted on the steam inlet pipe 54 by means of a conventional bolt connection.
The working principle of the embodiment is as follows: the utility model provides a sodium sulfate waste liquid treatment device, in pouring into sodium sulfate head tank 1 into the sodium sulfate waste water that contains the high concentration, can open first valve 24 and third valve 34 simultaneously, sodium sulfate waste water flows out from sodium sulfate head tank 1, flow through first drain pipe 11 and flow to first feed liquor pipe 21 and second feed liquor pipe 31 through two other exports of three-way valve, flow into first solventing-out crystallization cauldron 22 and second solventing-out crystallization cauldron 32 respectively again, start first solventing-out crystallization cauldron 22 and second solventing-out crystallization cauldron 32 and carry out the solventing-out crystallization, open second valve 25 and fourth valve 35 after the solventing-out crystallization is finished, the solventing-out crystallization mixture flows to centrifuge 4 through second drain pipe 23 and third drain pipe 33 respectively, start centrifuge 4 and separate, obtain sodium sulfate crystal and filtrating, the filtrating, carry out the rectification in the filtrating reentrant rectifying column 51, opening the seventh valve 57, introducing steam into the rectifying tower 51 through the steam inlet pipe 54 for heating treatment, rectifying to obtain ethanol and water, evaporating the ethanol and entering the ethanol recovery pipe 53, opening the sixth valve 56, allowing the ethanol to respectively flow back into the first elution crystallization kettle 22 and the second elution crystallization kettle 32 through the other two outlets of the three-way valve, then opening the fifth valve 55, and allowing the rectified water to flow out through the recovery water pipe 52, thereby realizing continuous treatment of the sodium sulfate wastewater.
Compared with the prior art, the utility model has the following advantages: one of which, the utility model discloses a be provided with parallelly connected first solventing-out crystal system 2 and the second solventing-out crystal system 3 that sets up, first solventing-out crystal system 2 and second solventing-out crystal system 3 can use simultaneously, also can use in turn, the mixture after the solventing-out crystallization adds obtains sodium sulfate crystal and filtrating through centrifuge 4 separation, carry out separation processing in the rectification recovery system 5 is gone into to the filtrating pump, the product that obtains of separation can flow back again and carry out recycle in first solventing-out crystal system 2 and the second solventing-out crystal system 3, can realize the serialization processing of sodium sulfate waste water. Secondly, the utility model discloses a be connected with recycled water pipe 52 and ethanol recovery tube 53 on rectifying column 51, filtrating separates into ethanol and water in rectifying column 51, and water can be followed recycled water pipe 52 and flowed out and can be recycled, and the ethanol accessible ethanol recovery tube 53 of separation flows back first solvency out crystallization kettle 22, second solvency out crystallization kettle 32 by recycle. Thirdly, a steam inlet pipe 54 is connected to the air inlet of the rectifying tower 51, and can be used for introducing steam into the rectifying tower 51, and further heating the filtrate in the rectifying tower 51.
Example two
The present embodiment differs from the above embodiments in that: as shown in fig. 2, the first elution crystallization system 2 further includes a first stirrer 26, and the first stirrer 26 is disposed in the first elution crystallization kettle 22.
The first stirrer 26 is provided in the first elution crystallization kettle 22 so as to stir the sodium sulfate waste liquid in the first elution crystallization kettle 22.
As shown in fig. 2, the second elution crystallization system 3 further comprises a second stirrer 36, and the second stirrer 36 is disposed in the second elution crystallization kettle 32.
The second stirrer 36 is provided in the second elution crystallization kettle 32 so as to stir the sodium sulfate waste liquid in the second elution crystallization kettle 32.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. The utility model provides a sodium sulfate waste liquid processing apparatus which characterized in that: the system comprises a sodium sulfate raw material tank, a first dissolution crystallization system, a second dissolution crystallization system, a centrifuge and a rectification recovery system; a liquid outlet of the sodium sulfate raw material tank is connected with a first liquid outlet pipe, and one port of the first liquid outlet pipe is respectively communicated with a liquid inlet of the first dissolution crystallization system and a liquid inlet of the second dissolution crystallization system through a three-way valve; the liquid outlet of the first solution crystallization system and the liquid outlet of the second solution crystallization system are communicated with the liquid inlet of the centrifuge through a three-way valve; one port of the rectification recovery system is communicated with the liquid outlet of the centrifuge through a pipeline, and the other port of the rectification recovery system is respectively communicated with the first solution-out crystallization system and the second solution-out crystallization system through a three-way valve.
2. The sodium sulfate waste liquid treatment device according to claim 1, characterized in that: the first elution crystallization system comprises a first liquid inlet pipe, a first elution crystallization kettle and a second liquid outlet pipe; one port of the first liquid inlet pipe is connected to the first liquid outlet pipe through a three-way valve, and the other port of the first liquid inlet pipe is communicated with a liquid inlet of the first elution crystallization kettle; the liquid outlet of the first dissolution crystallization kettle is communicated with one port of a second liquid outlet pipe, and the other port of the second liquid outlet pipe is communicated with the liquid inlet of the centrifugal machine through a three-way valve.
3. The sodium sulfate waste liquid treatment device according to claim 2, characterized in that: the first elution crystallization system further comprises a first stirrer, and the first stirrer is arranged in the first elution crystallization kettle.
4. The sodium sulfate waste liquid treatment apparatus according to claim 3, characterized in that: the first elution crystallization system further comprises a first valve and a second valve; the first valve is assembled on the first liquid inlet pipe; the second valve is assembled on the second liquid outlet pipe.
5. The sodium sulfate waste liquid treatment device according to claim 2, characterized in that: the second elution crystallization system comprises a second liquid inlet pipe, a second elution crystallization kettle and a third liquid outlet pipe; one port of the second liquid inlet pipe is connected to the first liquid outlet pipe through a three-way valve, and the other port of the second liquid inlet pipe is communicated with a liquid inlet of the second elution crystallization kettle; and the liquid outlet of the second dissolution crystallization kettle is communicated with one port of a third liquid outlet pipe, and the other port of the third liquid outlet pipe is communicated with the liquid inlet of the centrifugal machine through a three-way valve.
6. The sodium sulfate waste liquid treatment device according to claim 5, characterized in that: the second elution crystallization system further comprises a second stirrer, and the second stirrer is arranged in the second elution crystallization kettle.
7. The sodium sulfate waste liquid treatment device according to claim 6, characterized in that: the second elution crystallization system further comprises a third valve and a fourth valve; the third valve is assembled on the second liquid inlet pipe; the fourth valve is assembled on the third liquid outlet pipe.
8. The sodium sulfate waste liquid treatment device according to claim 5, characterized in that: the rectification recovery system comprises a rectification tower, a recovery water pipe and an ethanol recovery pipe; the liquid inlet of the rectifying tower is communicated with the liquid outlet of the centrifugal machine through a pipeline; one port of the recovery water pipe is connected to the water outlet of the rectifying tower; one port of the ethanol recovery pipe is communicated with a liquid outlet of the rectifying tower, and the other port of the ethanol recovery pipe is respectively communicated with the first elution crystallization kettle and the second elution crystallization kettle through a three-way valve.
9. The sodium sulfate waste liquid treatment device according to claim 8, characterized in that: the rectification recovery system also comprises a steam inlet pipe; and one end opening of the steam inlet pipe is connected to the air inlet of the rectifying tower.
10. The sodium sulfate waste liquid treatment device according to claim 9, characterized in that: the rectification recovery system also comprises a fifth valve, a sixth valve and a seventh valve; the fifth valve is assembled on the recovery water pipe; the sixth valve is mounted on the ethanol recovery pipe; the seventh valve is assembled on the steam inlet pipe.
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|---|---|---|---|
| CN202020592872.2U CN212102425U (en) | 2020-04-20 | 2020-04-20 | Sodium sulfate waste liquid treatment device |
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| CN202020592872.2U CN212102425U (en) | 2020-04-20 | 2020-04-20 | Sodium sulfate waste liquid treatment device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115304135A (en) * | 2022-07-22 | 2022-11-08 | 安徽润岳科技有限责任公司 | Electrodialysis system for recycling foaming agent mother liquor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115304135A (en) * | 2022-07-22 | 2022-11-08 | 安徽润岳科技有限责任公司 | Electrodialysis system for recycling foaming agent mother liquor |
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