CN216614062U - Device for extracting sodium thiosulfate pentahydrate by using alkaline residue wastewater - Google Patents
Device for extracting sodium thiosulfate pentahydrate by using alkaline residue wastewater Download PDFInfo
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- CN216614062U CN216614062U CN202220117568.1U CN202220117568U CN216614062U CN 216614062 U CN216614062 U CN 216614062U CN 202220117568 U CN202220117568 U CN 202220117568U CN 216614062 U CN216614062 U CN 216614062U
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Abstract
The utility model provides a device for extracting sodium thiosulfate pentahydrate by using caustic sludge wastewater, which comprises the following components in sequential connection: the device comprises an alkali residue wastewater conveying pipe, a feed pump, a filter, a cold separation heat exchanger, a cold separation crystallizer, a centrifuge and a discharge bin, wherein the cold separation heat exchanger is connected with a refrigerator, the upper part of the centrifuge is provided with a cleaning liquid conveying pipe, and the lower part of the centrifuge is provided with an external drainage conveying pipe. The utility model adopts the cold separation technology to treat the alkaline residue wastewater, and finally extracts the sodium thiosulfate pentahydrate, the sulfur removal efficiency of the alkaline residue wastewater can reach 90 percent, the resource recycling is realized while the wastewater is treated, the investment is low, the occupied area is small, the operation cost is low, and the utility model is worthy of being widely applied to the pretreatment of the alkaline residue wastewater of petrochemical refining enterprises.
Description
Technical Field
The utility model relates to the technical field of wastewater treatment, in particular to a device for extracting sodium thiosulfate pentahydrate by using alkaline residue wastewater.
Background
The alkaline residue wastewater belongs to high-concentration organic wastewater in a refinery, contains a large amount of salt, sulfide and the like, has high concentration, greatly influences the normal operation of wastewater treatment facilities of the petrochemical plant and the qualification rate of wastewater treatment, has high toxicity, and has the toxic substances, so that some pollutants are extremely toxic substances, enter organisms and human bodies, are combined with protein, and can cause permanent damage. In the prior art, a low-pressure wet oxidation method, a neutralization method and an advanced oxidation method are generally adopted for treatment. For example, chinese patent application No. 201210521764.6 discloses a method for treating sodium sulfide wastewater, comprising the steps of: mixing the sodium sulfide waste water, the industrial waste sulfur and the catalyst, and then introducing air to carry out oxidation reaction; and filtering after the oxidation reaction is finished, concentrating the filtrate, cooling and crystallizing, filtering to obtain sodium thiosulfate crystals and crystallization mother liquor, and drying the sodium thiosulfate crystals to obtain sodium thiosulfate pentahydrate. Through the technical scheme, a single product can be obtained, certain economic benefits are achieved, substances such as sulfur and a catalyst need to be added, the operation is complicated, and the defects of high investment and high operation cost exist. How to design an alkali residue wastewater treatment system with simple and convenient operation to acquire sodium thiosulfate with less investment and lower operation cost is the technical problem to be solved by the application.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects of the prior art, the utility model provides a device for extracting sodium thiosulfate pentahydrate by using alkaline residue wastewater.
The utility model is realized by the following technical scheme:
the utility model provides an utilize caustic sludge waste water to extract device of sodium thiosulfate pentahydrate, includes that the order is connected: the device comprises an alkaline residue wastewater conveying pipe, a feeding pump, a filter, a cold separation heat exchanger, a cold separation crystallizer, a centrifugal machine and a discharging bin, wherein the cold separation heat exchanger is connected with a refrigerating machine, the upper part of the centrifugal machine is provided with a cleaning liquid conveying pipe, and the lower part of the centrifugal machine is provided with an external drainage conveying pipe.
Preferably, the system also comprises a cold separating circulating pump, wherein the cold separating crystallizer is provided with a return port, and the return port is connected with a feed inlet of the cold separating heat exchanger through the cold separating circulating pump.
Further preferably, the discharge hole of the discharge bin is connected with a product packaging machine through a discharge pipe.
Compared with the prior art, the method adopts a cold separation technology to treat the caustic sludge wastewater, finally extracts the sodium thiosulfate pentahydrate, has the sulfur removal efficiency of 90 percent in the caustic sludge wastewater, realizes resource recycling while treating the wastewater, has less investment, small floor area and low operation cost, and is worthy of being widely applied to the pretreatment of the caustic sludge wastewater of petrochemical enterprises.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a structure showing a flow direction of a liquid.
In the figure: 1. conveying pipe for caustic sludge wastewater; 2. a feed pump; 3. a filter; 4. a refrigerator; 5. a cold separation heat exchanger; 6. a cold separation crystallizer; 7. a cold separation circulating pump; 8. a centrifuge; 9. a cleaning liquid delivery pipe; 10. an external drainage delivery pipe; 11. a discharging bin; 12. and (4) discharging the pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1: the utility model provides an utilize caustic sludge waste water to extract device of sodium thiosulfate pentahydrate, includes that the order is connected: the system comprises an alkaline residue wastewater conveying pipe 1, a feeding pump 2, a filter 3, a cold separating heat exchanger 5, a cold separating crystallizer 6, a centrifuge 8 and a discharge bin 11, wherein the cold separating heat exchanger 5 is connected with a refrigerator 4 (the refrigerant 4 is connected with the cold separating heat exchanger 5 to form a refrigerant circulating pipeline so as to provide cold for the cold separating heat exchanger 5), the upper part of the centrifuge 8 is provided with a cleaning liquid conveying pipe 9, and the lower part of the centrifuge is provided with an external liquid discharge conveying pipe 10 (an external sewage treatment unit).
As shown in fig. 2: conveying the alkaline residue wastewater to be treated to a feed pump 2 through an alkaline residue wastewater conveying pipe 1, then pumping the alkaline residue wastewater to a filter 3 through the feed pump 2, filtering and removing impurities (filtering impurities to be discharged periodically) through the filter 3, then conveying the alkaline residue wastewater to a cold separation heat exchanger 5 for heat exchange, then introducing the heat exchange into a cold separation crystallizer 6 for crystallization, introducing a feed liquid obtained by crystallization into a centrifuge 8, injecting a cleaning liquid into the centrifuge 8 from an injection cleaning liquid conveying pipe 9 to be mixed with the feed liquid, cleaning and then centrifuging products in the feed liquid, introducing the centrifuged products into a discharge bin 11, and outputting the waste liquid generated by centrifugation to the centrifuge 8 through an external liquid discharge conveying pipe 10 for subsequent sewage treatment.
In order to improve the cold separation effect and ensure sufficient cold separation and crystallization of the feed liquid, as a preferred technical scheme, a further embodiment of the present invention is shown in fig. 2: the cold separating crystallizer is characterized by further comprising a cold separating circulating pump 7, wherein a return port is arranged on the cold separating crystallizer 6, and the return port is connected with a feed inlet of the cold separating heat exchanger 5 through the cold separating circulating pump 7 to form a cold separating liquid circulating pipeline.
As a preferred technical solution, another embodiment of the present invention is shown in fig. 2: the discharge hole of the discharge bin 11 is connected with a product packaging machine through a discharge pipe 12, and the extracted sodium thiosulfate pentahydrate is packaged by the product packaging machine and then sold.
The above description is only exemplary of the present invention and should not be taken as limiting the utility model, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. The construction or connection of parts not described in detail in the present invention is prior art.
Claims (3)
1. The utility model provides an utilize caustic sludge waste water to extract device of sodium thiosulfate pentahydrate which characterized in that: comprises the following steps connected in sequence: the device comprises an alkaline residue wastewater conveying pipe (1), a feeding pump (2), a filter (3), a cold separating heat exchanger (5), a cold separating crystallizer (6), a centrifugal machine (8) and a discharging bin (11), wherein the cold separating heat exchanger (5) is connected with a refrigerating machine (4), the upper part of the centrifugal machine (8) is provided with a cleaning liquid conveying pipe (9), and the lower part of the centrifugal machine is provided with an external drainage conveying pipe (10).
2. The device for extracting sodium thiosulfate pentahydrate by using caustic sludge wastewater as claimed in claim 1, which is characterized in that: the cold separating crystallizer is characterized by further comprising a cold separating circulating pump (7), wherein a return port is arranged on the cold separating crystallizer (6), and the return port is connected with a feed inlet of the cold separating heat exchanger (5) through the cold separating circulating pump (7).
3. The device for extracting sodium thiosulfate pentahydrate by using caustic sludge wastewater as claimed in claim 1, which is characterized in that: the discharge hole of the discharge bin (11) is connected with a product packaging machine through a discharge pipe (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220117568.1U CN216614062U (en) | 2022-01-17 | 2022-01-17 | Device for extracting sodium thiosulfate pentahydrate by using alkaline residue wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220117568.1U CN216614062U (en) | 2022-01-17 | 2022-01-17 | Device for extracting sodium thiosulfate pentahydrate by using alkaline residue wastewater |
Publications (1)
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| CN216614062U true CN216614062U (en) | 2022-05-27 |
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Family Applications (1)
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| CN202220117568.1U Active CN216614062U (en) | 2022-01-17 | 2022-01-17 | Device for extracting sodium thiosulfate pentahydrate by using alkaline residue wastewater |
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| CN (1) | CN216614062U (en) |
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2022
- 2022-01-17 CN CN202220117568.1U patent/CN216614062U/en active Active
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