Salt mud washing and recycling device
The salt mud washing and recovery device, which combines multi-stage sedimentation and mixers, solves the problem of high tap water consumption during the salt mud washing process, and achieves efficient recovery of sodium chloride from the salt mud and cost reduction.
Patent Information
- Application Number
- CN202520159343.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-23
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2035-01-23
AI Technical Summary
Existing salt mud washing equipment consumes a large amount of pure water during the washing process, which increases washing costs.
The salt mud washing and recovery device, which combines multi-stage settling tanks and mixers, reduces the amount of tap water used through the design of multi-stage settling and mixing tanks. It uses the supernatant liquid separated by the settling tank for salt mud extraction and washing, and combines it with a plate and frame filter press to achieve salt mud settling and liquid recovery.
It effectively reduces the amount of tap water used, meets environmental emission standards, reduces washing costs, and achieves efficient recovery of sodium chloride from salt mud.
Smart Images
Figure CN223774514U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a salt mud washing and recycling device. BACKGROUND
[0002] A large amount of salt mud is produced in a primary salt water refining process, and the salt mud is a harmful waste, and environmental protection requirements are that general solid waste is stored and then entrusted for treatment, safe landfill and comprehensive utilization, and the disposal process does not cause secondary pollution, but the salt mud contains 10-12% of sodium chloride, and cannot meet the environmental protection emission index requirements, so the salt mud needs to be washed and treated, and after disposal, the salt mud is disposed as solid waste and buried, so as to avoid soil pollution.
[0003] At present, for the washing of the salt mud, three layers of washing barrels are mainly used to wash out the sodium chloride in the salt mud, but in the washing process, a large amount of washing water is needed, a large amount of pure water is consumed, and the washing cost is increased. UTILITY MODEL CONTENTS
[0004] The utility model aims at providing a salt mud washing and recycling device, and solves the problem that the existing washing device needs to consume a large amount of pure water in the washing process, and the washing cost is increased.
[0005] To solve the above technical problems, the utility model adopts the following technical scheme:
[0006] A salt mud washing and recycling device, which comprises a first-stage settler, a second-stage settler and a third-stage settler connected in sequence, the first-stage settler is connected with a salt mud pool, a first-stage mixer, a second-stage mixer and a third-stage mixer are sequentially arranged between the salt mud pool, the first-stage settler, the second-stage settler and the third-stage settler, the third-stage mixer is connected with a tap water adding pipe, the liquid phase outlets at the upper portions of the first-stage settler, the second-stage settler and the third-stage settler are all connected with a salt water recycling pipe, a plate-and-frame filter press is connected with the output port of the third-stage settler, the plate-and-frame filter press is connected with a pressure filtration water storage tank, and the pressure filtration water storage tank is connected with the third-stage mixer through a circulating pipe.
[0007] Further, a fourth-stage settler is arranged between the third-stage settler and the plate-and-frame filter press, the horizontal installation heights of the second-stage settler, the third-stage settler and the fourth-stage settler are sequentially increased, and the liquid phase outlets at the upper portions of the second-stage settler, the third-stage settler and the fourth-stage settler are connected with the second-stage mixer and the third-stage mixer through reflux pipes.
[0008] Still further, a fourth-stage mixer is arranged between the fourth-stage settler and the third-stage settler, and the fourth-stage mixer is connected with the tap water adding pipe and the circulating pipe.
[0009] Still further, a fourth-stage agitator is arranged at the top of the fourth-stage settler.
[0010] Further, the four-stage settler and the plate-and-frame filter press are sequentially provided with a five-stage mixer and a washed salt mud tank, the five-stage mixer is communicated with a tap water adding pipe, and the top of the washed salt mud tank is provided with a washed salt mud stirrer.
[0011] Further, the first-stage settler, the second-stage settler and the third-stage settler are respectively provided with a first-stage stirrer, a second-stage stirrer and a third-stage stirrer.
[0012] 1. The salt mud solution is sequentially extracted and washed by the first-stage settler, the second-stage settler and the third-stage settler, the supernatant liquid separated from the third-stage settler and containing sodium chloride is discharged through a salt water recovery pipe, the salt mud settled in the third-stage settler is transported to the plate-and-frame filter press, the liquid obtained after pressure filtration of the plate-and-frame filter press is fed into a pressure filtration water storage tank, at this time, the liquid in the pressure filtration water storage tank contains a low concentration of sodium chloride, and the liquid is transported to the third-stage mixer to replace the tap water injected by the tap water adding pipe to wash the salt mud, thereby reducing the use amount of tap water.
[0013] 2. The horizontal installation height of the second-stage settler, the third-stage settler and the fourth-stage settler is sequentially increased, the supernatant liquid separated from the fourth-stage settler automatically flows to the second-stage mixer and the third-stage mixer through the liquid phase outlet of the fourth-stage settler, meanwhile, the supernatant liquid separated from the fourth-stage settler contains a low concentration of sodium chloride, and the sodium chloride in the salt mud can be extracted when the salt mud is mixed in the second-stage mixer and the third-stage mixer, thereby effectively reducing the use amount of tap water injected by the tap water adding pipe, and washing out the excess sodium chloride in the salt mud, meeting the environmental protection emission index and reducing the washing cost. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is a schematic diagram of the salt mud washing and recycling device.
[0015] Figure: 1 - first-stage settler, 2 - second-stage settler, 3 - third-stage settler, 4 - salt mud pool, 5 - first-stage mixer, 6 - second-stage mixer, 7 - third-stage mixer, 8 - tap water adding pipe, 10 - salt water recovery pipe, 11 - plate-and-frame filter press, 12 - pressure filtration water storage tank, 13 - circulating pipe, 14 - fourth-stage settler, 15 - backflow pipe, 16 - fourth-stage mixer, 17 - fourth-stage stirrer, 18 - fifth-stage mixer, 19 - washed salt mud tank, 20 - washed salt mud stirrer, 21 - first-stage stirrer, 22 - second-stage stirrer, 23 - third-stage stirrer, 24 - salt mud feeding pump, 25 - first-stage discharging pump, 26 - second-stage discharging pump, 27 - third-stage discharging pump, 28 - circulating salt water pump, 29 - fourth-stage discharging pump, 30 - pressure filtration pump, 31 - salt mud pool stirrer. DETAILED DESCRIPTION
[0016] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further described in detail in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model, and are not used to limit the utility model.
[0017] Example 1
[0018] Referring to Figure 1 It is shown that the salt mud washing and recycling device comprises a primary settler 1, a secondary settler 2 and a tertiary settler 3 connected in sequence, input ports and output ports are arranged at the top and the bottom of the primary settler 1, the secondary settler 2 and the tertiary settler 3, the output port of the primary settler 1 is connected with the input port of the secondary settler 2, the output port of the secondary settler 2 is connected with the input port of the tertiary settler 3, the primary settler 1 is connected with a salt mud pool 4, a primary mixer 5, a secondary mixer 6 and a tertiary mixer 7 are arranged between the salt mud pool 4, the primary settler 1, the secondary settler 2 and the tertiary settler 3 in sequence, the tertiary mixer 7 is communicated with a tap water adding pipe 8, the liquid phase outlets of the primary settler 1, the secondary settler 2 and the tertiary settler 3 are all communicated with a brine recycling pipe 10, it should be noted that the brine recycling pipe 10 can be communicated with a brine pool, so as to facilitate unified collection and treatment, a plate-and-frame filter press 11 is connected with the output port of the tertiary settler 3, the plate-and-frame filter press 11 is communicated with a pressure filtration water storage tank 12, and the pressure filtration water storage tank 12 is communicated with the tertiary mixer 7 through a circulating pipe 13.
[0019] Among them, the output ports of the salt mud pool 4, the primary settler 1, the secondary settler 2 and the tertiary settler 3 are respectively provided with a salt mud feeding pump 24, a primary discharge pump 25, a secondary discharge pump 26 and a tertiary discharge pump 27 to ensure the normal conveying of the salt mud solution, and a circulating brine pump 28 is arranged on the circulating pipe 13 to convey the liquid in the pressure filtration water storage tank 12 to the tertiary mixer 7.
[0020] In use, the salt mud in the salt mud pool 4 and the liquid are transported to the first mixer 5, the first mixer 5 uniformly mixes the settled salt mud and the liquid to make the liquid extract sodium chloride in the salt mud, forms a salt mud solution, and then injects the salt mud solution into the first settler 1 for settlement separation, the supernatant liquid extracted with sodium chloride separated in the first settler 1 is discharged through the brine recovery pipe 10, and the salt mud and part of the liquid settled at the bottom of the first settler 1 are transported to the second mixer 6 for uniform mixing to make the liquid extract sodium chloride in the salt mud, form a salt mud solution, and then inject the salt mud solution into the second settler 2 for settlement separation, the supernatant liquid extracted with sodium chloride separated in the second settler 2 is discharged through the brine recovery pipe 10, and the salt mud and part of the liquid settled at the bottom of the second settler 2 are transported to the third mixer 7 for uniform mixing under the action of the second discharge pump 26, it should be noted that when the third mixer 7 mixes the salt mud solution, a proper amount of tap water can be injected through the tap water injection pipe 8 to wash the salt mud, so as to ensure that the sodium chloride in the salt mud can be fully dissolved, and the salt mud is washed; the salt mud solution is uniformly mixed in the third mixer 7, then injected into the third settler 3 for settlement separation, the supernatant liquid extracted with sodium chloride separated in the third settler 3 is discharged through the brine recovery pipe 10, and the salt mud settled in the third settler 3 is transported to the plate-and-frame filter press 11, the liquid obtained after pressure filtration of the plate-and-frame filter press 11 enters the pressure filtration water storage tank 12, at this time, the liquid in the pressure filtration water storage tank 12 has a low concentration of sodium chloride, and is transported to the third mixer 7 to replace the tap water injected through the tap water injection pipe 8 to wash the salt mud, thereby reducing the amount of tap water used.
[0021] Example 2
[0022] Based on the foregoing examples, refer to Figure 1 It is shown that the fourth settler 14 is arranged between the third settler 3 and the plate-and-frame filter press 11, it should be noted that the top and bottom of the fourth settler 14 are provided with input ports and output ports, the output port of the fourth settler 14 is provided with a fourth discharge pump 29 to ensure normal transportation of the salt mud solution, the horizontal installation heights of the second settler 2, the third settler 3 and the fourth settler 14 are arranged in sequence with increasing heights, and the upper liquid outlets of the fourth settler 14 are connected with the second mixer 6 and the third mixer 7 through the reflux pipes 15.
[0023] In use, the salt mud solution is uniformly mixed in the third mixer 7 and then injected into the third settler 3 for separation, the supernatant separated from the third settler 3 is discharged through the salt water recovery pipe 10, and the salt mud and part of the liquid in the third settler 3 are transported to the fourth settler 14, the salt mud solution is separated in the fourth settler 14, and the supernatant separated from the fourth settler 14 automatically flows to the second mixer 6 and the third mixer 7 through the liquid phase outlets of the fourth settler 14, respectively, and the supernatant separated from the fourth settler 14 contains a low concentration of sodium chloride, so that the sodium chloride in the salt mud can be extracted when the salt mud is mixed in the second mixer 6 and the third mixer 7, the amount of tap water injected through the tap water injection pipe 8 is effectively reduced, and the excess sodium chloride in the salt mud can be washed out to meet the environmental emission index and reduce the washing cost.
[0024] As a preferred embodiment, refer to Figure 1 It is shown that the fourth settler 14 is provided with a fourth mixer 16, the fourth mixer 16 is connected with the tap water injection pipe 8 and the circulating pipe 13 in communication, the salt mud and part of the liquid transported from the third settler 3 to the fourth settler 14 can be uniformly mixed by setting the fourth mixer 16, which facilitates the extraction of sodium chloride in the salt mud, and the tap water injection pipe 8 and the circulating pipe 13 are connected in communication, which facilitates the injection of tap water or liquid in the filter pressing water tank 12 into the fourth mixer 16 for re-extraction of sodium chloride in the salt mud.
[0025] As a preferred embodiment, refer to Figure 1 It is shown that the fourth settler 14 is provided with a fourth mixer 16, the fourth mixer 16 is connected with the tap water injection pipe 8 and the circulating pipe 13 in communication, the salt mud and part of the liquid transported from the third settler 3 to the fourth settler 14 can be uniformly mixed by setting the fourth mixer 16, which facilitates the extraction of sodium chloride in the salt mud, and the tap water injection pipe 8 and the circulating pipe 13 are connected in communication, which facilitates the injection of tap water or liquid in the filter pressing water tank 12 into the fourth mixer 16 for re-extraction of sodium chloride in the salt mud.
[0026] As a preferred embodiment, refer to Figure 1It is shown that the four-stage settler 14 is sequentially provided with a five-stage mixer 18 and a washed salt mud tank 19 between the plate-and-frame filter press 11, the five-stage mixer 18 is communicated with a tap water adding pipe 8, the top of the washed salt mud tank 19 is provided with a washed salt mud agitator 20, by arranging the five-stage mixer 18, the salt mud and part of the supernatant solution can be mixed again, by arranging the washed salt mud tank 19, the washed salt mud solution is collected, which is convenient for subsequent unified conveying to the plate-and-frame filter press 11 for pressure filtration, and by arranging the washed salt mud agitator 20 at the top of the washed salt mud tank 19, since the salt mud in the washed salt mud tank 19 has a small water content, the washed salt mud agitator 20 can agitate the inside of the washed salt mud tank 19, so that the salt mud in the washed salt mud tank 19 is not prone to settlement and is not convenient for conveying, and it should be noted that the washed salt mud tank 19 is provided with a pressure filtration pump 30 for conveying the salt mud between the plate-and-frame filter press 11.
[0027] As a preferred embodiment, refer to Figure 1 It is shown that the first-stage settler 1, the second-stage settler 2 and the third-stage settler 3 are respectively provided with a first-stage agitator 21, a second-stage agitator 22 and a third-stage agitator 23, by arranging the first-stage agitator 21, the second-stage agitator 22 and the third-stage agitator 23, the salt mud solution in the first-stage settler 1, the second-stage settler 2 and the third-stage settler 3 is formed to rotate downward, thereby accelerating the settling rate.
[0028] As a preferred embodiment, refer to Figure 1 It is shown that the salt mud pool 4 can be provided with a salt mud pool agitator 31, thereby agitating the salt mud pool 4, so that the salt mud in the salt mud pool 4 is not prone to settlement at the bottom of the salt mud pool 4 and is not convenient for conveying.
[0029] Although the present application has been described herein with reference to a number of illustrative embodiments, it should be understood that various other modifications and implementations can be devised by those skilled in the art without departing from the principles of the present application. More particularly, many variations and modifications will be apparent to those skilled in the art from the above description of the preferred embodiments, along with the associated drawings. Such variations and modifications are to be considered within the scope of the present application as defined by the appended claims. Other aspects, features, and advantages of the present application will become apparent to those skilled in the art from the above description, which is by way of illustration, and not by way of limitation.
Claims
1. A salt slurry washing recovery apparatus, characterized by: The application relates to a salt slurry treatment device, which comprises a first-stage settling device (1), a second-stage settling device (2) and a third-stage settling device (3) connected in sequence, a salt slurry tank (4) is connected with the first-stage settling device (1), a first-stage mixer (5), a second-stage mixer (6) and a third-stage mixer (7) are sequentially arranged between the salt slurry tank (4), the first-stage settling device (1), the second-stage settling device (2) and the third-stage settling device (3), the third-stage mixer (7) is communicated with a tap water adding pipe (8), the first-stage settling device (1), the second-stage settling device (2) and the third-stage settling device (3) are all communicated with a salt water recovery pipe (10) at the upper liquid phase outlets, the third-stage settling device (3) is connected with a plate-and-frame filter press (11), the plate-and-frame filter press (11) is communicated with a filter press water storage tank (12), and the filter press water storage tank (12) is communicated with the third-stage mixer (7) through a circulating pipe (13).
2. A salt slurry scrubbing and recovery apparatus according to claim 1, wherein: A fourth-stage settling device (14) is arranged between the third-stage settling device (3) and the plate-and-frame filter press (11), the second-stage settling device (2), the third-stage settling device (3) and the fourth-stage settling device (14) are arranged in sequence with the horizontal installation height gradually increasing, the upper liquid phase outlets of the fourth-stage settling device (14) are respectively communicated with the second-stage mixer (6) and the third-stage mixer (7) through reflux pipes (15).
3. A salt slurry washing and recovery apparatus according to claim 2, wherein: A fourth-stage mixer (16) is arranged between the fourth-stage settling device (14) and the third-stage settling device (3), and the fourth-stage mixer (16) is communicated with the tap water adding pipe (8) and the circulating pipe (13).
4. A salt slurry washing and recovery apparatus according to claim 3, wherein: A fourth-stage agitator (17) is arranged on the top of the fourth-stage settling device (14).
5. A salt slurry washing and recovery apparatus as claimed in claim 2, wherein: A fifth-stage mixer (18) and a washed salt slurry tank (19) are arranged in sequence between the fourth-stage settling device (14) and the plate-and-frame filter press (11), the fifth-stage mixer (18) is communicated with the tap water adding pipe (8), and a washed salt slurry agitator (20) is arranged on the top of the washed salt slurry tank (19).
6. A salt slurry washing and recovery apparatus as claimed in claim 1, wherein: First-stage, second-stage and third-stage agitators (21, 22 and 23) are arranged on the top of the first-stage, second-stage and third-stage settling devices (1, 2 and 3) respectively.