Novel salt lake brine multi-stage filtering system

Abstract

The utility model discloses a novel salt lake brine multi-stage filtering system which comprises a brine conveying pump, a first efficient self-cleaning filter, a second efficient self-cleaning filter and a filtered brine storage tank, the brine conveying pump pumps brine needing to be filtered from a salt pan, and the brine is conveyed to the water inlet end of the first efficient self-cleaning filter through the brine conveying pipe. The water outlet end of the first efficient self-cleaning filter after rough filtration is connected to the water inlet end of the second efficient self-cleaning filter; the fine filtered water outlet end of the second efficient self-cleaning filter is connected to the water inlet end of the filtered brine storage tank; and the output end of the filtered brine storage tank is in butt joint with the connecting end of the next process. According to the utility model, suspended matters in brine are separated out by adopting a multi-stage efficient self-cleaning filtering technology, and backwashing water is collected and then discharged back to a salt pan. The system can remove more than 90% of suspended matters from the brine, the filtered brine can be used on a production line for comprehensive utilization of brine resources, and the problem of pollution and blockage at the rear section is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of brine filtering equipment, in particular to a novel salt lake brine multi-stage filtering system. Background Art

[0002] The development process of salt lake brine is affected by high-salt brine and frequent local sandstorms. Various complex suspended particles and crystallized salts in the brine not only have a serious impact on resource development, but also cause harm to the operation of the back-end equipment. The utility model invention starts from the characteristics of salt lake brine and creatively solves the difficulties brought by impurity particles to the development of brine resources, making the brine resource development process more stable and reducing the operation and maintenance costs of enterprises.

[0003] Traditional processes generally use multi-media filters, plate and frame filter presses, fiber bundles + ultrafiltration membranes, and have the following usage problems:

[0004] 1. The filter media of the multi-media filter tends to harden after being used for a period of time and needs to be replaced. However, the operation and replacement are cumbersome and complicated, and the backwashing consumes a lot of water, the filtration flow rate is low, the floor space is large, and long-distance transportation is inconvenient.

[0005] 2. Plate and frame filter pressing is large in scale and has high investment cost. At the same time, it is difficult to transport sludge, occupies a large area, and has high requirements for factory foundation.

[0006] 3. The investment in using ultrafiltration membrane technology is high, and the water temperature has a great impact on the membrane flux. Utility Model Content

[0007] The purpose of the utility model is to provide a new type of salt lake brine multi-stage filtration system, which uses multi-stage high-efficiency self-cleaning filtration technology to separate suspended matter in brine, and collects backwash water and discharges it back to the salt pan. The system can remove more than 90% of suspended matter from brine, and the brine after filtration can be used in the production line of comprehensive utilization of brine resources, greatly reducing the problem of pollution and blockage in the back section.

[0008] The utility model is realized by the following technical solutions:

[0009] A novel salt lake brine multi-stage filtration system comprises a brine delivery pump, a first high-efficiency self-cleaning filter, a second high-efficiency self-cleaning filter and a brine storage tank after filtration; the brine delivery pump extracts brine to be filtered from the salt pan, and delivers it to the water inlet of the first high-efficiency self-cleaning filter through a brine delivery pipe; the water outlet of the first high-efficiency self-cleaning filter after coarse filtration is connected to the water inlet of the second high-efficiency self-cleaning filter; the water outlet of the second high-efficiency self-cleaning filter after fine filtration is connected to the water inlet of the brine storage tank after filtration; the output end of the brine storage tank after filtration is connected to the connection end of the next process.

[0010] As a further improvement of the technical solution of the utility model, the flow rate of the brine delivery pump can be set according to the needs of different projects. The material of the brine delivery pump adopts one of 316L, 2205, 2507 stainless steel and titanium; the water supply head of the brine delivery pump is set according to the pipeline distance position; the start and stop of the brine delivery pump is automatically controlled according to the liquid level.

[0011] As a further improvement of the technical solution of the utility model, the size of the brine delivery pipe is determined by the amount of water to be treated, and the pipe material of the brine delivery pipe is selected from one of PVC / PE / 2205 stainless steel.

[0012] As a further improvement of the technical solution of the utility model, the first high-efficiency self-cleaning filter is a high-efficiency self-cleaning filter, whose scale is selected according to the amount of water treated, the cylinder material is carbon steel rubber lining or 2205 stainless steel, the filter material is 2205 stainless steel, the filter accuracy is 500-1000μm, and it automatically starts the self-cleaning process according to the inlet and outlet water pressure difference set by the automatic control system.

[0013] As a further improvement of the technical solution of the utility model, the second high-efficiency self-cleaning filter is a high-efficiency self-cleaning filter, whose scale is selected according to the amount of water treated, the cylinder material is carbon steel rubber lining or 2205 stainless steel, the filter material is 2205 stainless steel, the filter accuracy is 50-300μm, and it automatically starts the self-cleaning process according to the inlet and outlet water pressure difference set by the automatic control system.

[0014] As a further improvement of the technical solution of the utility model, the second high-efficiency self-cleaning filter is a high-efficiency self-cleaning filter, whose scale is selected according to the amount of water treated, the cylinder material is carbon steel rubber lining or 2205 stainless steel, the filter material is 2205 stainless steel, the filter accuracy is 50-300μm, and it automatically starts the self-cleaning process according to the inlet and outlet water pressure difference set by the automatic control system.

[0015] As a further improvement of the technical solution of the utility model, the first high-efficiency self-cleaning filter is connected to a first backwashing device.

[0016] As a further improvement of the technical solution of the utility model, the second high-efficiency self-cleaning filter is connected to a second backwashing device.

[0017] As a further improvement of the technical solution of the utility model, the brine delivery pump delivers the brine in the salt lake to the front end of the first high-efficiency self-cleaning filter and maintains a pressure of about 2 bar.

[0018] As a further improvement of the technical solution of the utility model, the first high-efficiency self-cleaning filter performs the first-stage filtration on the brine delivered by the brine delivery pump, intercepts and removes suspended particles larger than the filtration accuracy, and the filtered brine passes through the water outlet to the second-stage filter. When the pressure difference formed by the filtration is greater than the set value, the backwash operation function is triggered.

[0019] As a further improvement of the technical solution of the utility model, the second high-efficiency self-cleaning filter performs a second-stage filtration on the brine produced by the first high-efficiency self-cleaning filter, further removing the residual suspended particles greater than the filtration accuracy, and the filtered brine is transported from the outlet through a pipeline to the brine storage tank. When the pressure difference formed by the filtration is greater than the set value, the backwash operation function is triggered.

[0020] As a further improvement of the technical solution of the utility model, the water produced by the second high-efficiency self-cleaning filter enters the brine storage tank for standby use.

[0021] As a further improvement of the technical solution of the utility model, the multi-stage filter system can select a multi-stage cascade form according to the required brine clarity, set different precisions, and more reasonably treat the brine to meet the standards through multi-stage filtration.

[0022] As a further improvement of the technical solution of the utility model, the multi-stage filter system can select multiple groups in parallel according to the brine filtration amount.

[0023] In summary, compared with the prior art, the salt lake brine filtration system of the utility model uses multi-stage high-efficiency self-cleaning filtration technology to separate suspended matter from brine, and the backwash water is collected and discharged back to the salt pan. The system can remove more than 90% of suspended matter from brine, and the filtered brine can be used in the production line of comprehensive utilization of brine resources, greatly reducing the problem of pollution and blockage in the back section; the utility model has the following beneficial effects:

[0024] 1. Compared with the ultrafiltration membrane process, the multi-stage filtration process is not affected by temperature and the operating flow is more stable.

[0025] 2. The overall system investment is greatly reduced, and the investment cost can be reduced by 50%.

[0026] 3. The floor space occupied is 30% of that of the traditional filtration process.

[0027] 4. Compared with the multi-media filtration process, there will be no problem of filter material compaction.

[0028] 5. The equipment processing cycle is short and the delivery cycle is fast.

[0029] 6. Modular design.

[0030] 7. The filtration accuracy can be customized according to special requirements, which is more in line with actual needs.

[0031] 8. Easy to operate and zero maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0033] Figure 1 It is a structural schematic diagram of a novel salt lake brine multi-stage filtration system according to an embodiment of the utility model.

[0034] In the attached figure: 1- salt lake brine; 2- brine delivery pump; 3- first high-efficiency self-cleaning filter; 4- second high-efficiency self-cleaning filter; 5- brine storage tank after filtration. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, a mechanical connection, an electrical connection, a direct connection, or a connection through an intermediate medium, or the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] Reference Figure 1A novel salt lake brine multi-stage filtration system comprises a brine delivery pump 2, a first high-efficiency self-cleaning filter 3, a second high-efficiency self-cleaning filter 4 and a brine storage tank 5 after filtration; the brine delivery pump 2 extracts the brine to be filtered from the salt pan, and the salt lake brine 1 is delivered to the water inlet end of the first high-efficiency self-cleaning filter 3 through a brine delivery pipe; the outlet end of the first high-efficiency self-cleaning filter 3 after coarse filtration is connected to the water inlet end of the second high-efficiency self-cleaning filter 4; the outlet end of the second high-efficiency self-cleaning filter 4 after fine filtration is connected to the water inlet end of the brine storage tank 5 after filtration; the output end of the brine storage tank 5 after filtration is connected to the connection end of the next process. The utility model of the salt lake brine multi-stage filtration system adopts multi-stage high-efficiency self-cleaning filtration technology to remove suspended matter in brine. The specific technical scheme consists of a brine delivery pump 2, a first high-efficiency self-cleaning filter 3, a second high-efficiency self-cleaning filter 4, and a brine storage tank. The system can remove more than 90% of suspended matter from brine, and the filtered brine can be used in the production line of comprehensive utilization of brine resources, which greatly reduces the problem of pollution and blockage in the later stage.

[0039] Specifically, in this embodiment, the flow rate of the brine delivery pump 2 can be set according to the needs of different projects. The material of the brine delivery pump 2 is one of 316L, 2205, 2507 stainless steel and titanium. The water supply head of the brine delivery pump 2 is set according to the pipeline distance position; the start and stop of the brine delivery pump 2 is automatically controlled according to the liquid level.

[0040] Specifically, in this embodiment, the size of the brine delivery pipe is determined by the amount of water to be treated, and the pipe material of the brine delivery pipe is selected from one of PVC / PE / 2205 stainless steel.

[0041] Specifically, in this embodiment, the first high-efficiency self-cleaning filter 3 is a high-efficiency self-cleaning filter, whose scale is selected according to the amount of water to be treated, the cylinder material is carbon steel rubber lining or 2205 stainless steel, the filter material is 2205 stainless steel, the filter accuracy is 500-1000μm, and it automatically starts the self-cleaning process according to the inlet and outlet water pressure difference set by the automatic control system.

[0042] Specifically, in this embodiment, the second high-efficiency self-cleaning filter 4 is a high-efficiency self-cleaning filter, whose scale is selected according to the amount of water treated, the cylinder material is carbon steel rubber lining or 2205 stainless steel, the filter material is 2205 stainless steel, the filter accuracy is 50-300μm, and it automatically starts the self-cleaning process according to the inlet and outlet water pressure difference set by the automatic control system.

[0043] Specifically, in this embodiment, the second high-efficiency self-cleaning filter 4 is a high-efficiency self-cleaning filter, whose scale is selected according to the amount of water treated, the cylinder material is carbon steel rubber lining or 2205 stainless steel, the filter material is 2205 stainless steel, the filter accuracy is 50-300μm, and it automatically starts the self-cleaning process according to the inlet and outlet water pressure difference set by the automatic control system.

[0044] Specifically, in this embodiment, the first high-efficiency self-cleaning filter 3 is connected to a first backwashing device. The first backwashing device returns the backwash water to the salt lake brine 1 through a backwashing water pipeline according to the backwashing water direction.

[0045] Specifically, in this embodiment, the second high-efficiency self-cleaning filter 4 is connected to a second backwashing device. The second backwashing device returns the backwash water to the salt lake brine 1 through a backwash water pipeline according to the backwash water direction 6.

[0046] Specifically, in this embodiment, the brine delivery pump 2 delivers the brine in the salt lake to the front end of the first high-efficiency self-cleaning filter 3 and maintains a pressure of about 2 bar.

[0047] Specifically, in this embodiment, the first high-efficiency self-cleaning filter 3 performs the first-stage filtration on the brine delivered by the brine delivery pump 2, intercepts and removes suspended particles larger than the filtration accuracy, and the filtered brine passes through the water outlet to the second-stage filter. When the pressure difference formed by the filtration is greater than the set value, the backwash operation function is triggered.

[0048] Specifically, in this embodiment, the second high-efficiency self-cleaning filter 4 performs a second-stage filtration on the brine produced by the first high-efficiency self-cleaning filter 3, further removing the residual suspended particles greater than the filtration accuracy, and the filtered brine is transported from the outlet through a pipeline to the brine storage tank. When the pressure difference formed by the filtration is greater than the set value, the backwash operation function is triggered.

[0049] Specifically, in this embodiment, the water produced by the second high-efficiency self-cleaning filter 4 enters the brine storage tank for standby use.

[0050] Specifically, in the present embodiment, the multi-stage filter system can select a multi-stage cascade form according to the required brine clarity, set different precisions, and more reasonably treat the brine to meet the standards through multi-stage filtration.

[0051] Specifically, in the present embodiment, the multi-stage filter system can select multiple groups in parallel according to the brine filtration amount.

[0052] In this embodiment, the brine delivery pump 2 is a pump made of 2205 material, which automatically starts and stops according to production conditions, and the delivery flow rate can reach 5000m3 / h.

[0053] Specifically, in this embodiment, the water produced by the first high-efficiency self-cleaning filter 3 is filtered and transported to the second high-efficiency self-cleaning filter 4 through a pipeline, and the backwash water is collected and discharged back to the salt pan. It should be noted that the main purpose of multi-stage filtration is to remove impurities such as suspended matter and colloids in the raw water that hinder the operation of subsequent processes. Automatic backwashing can be set according to the pressure difference or the operating time. The backwashing process is completed automatically without manual intervention.

[0054] Specifically, in this embodiment, the water produced by the second high-efficiency self-cleaning filter 4 is transported to the brine storage tank through a pipeline after filtration, and the backwash water is collected and discharged back to the salt pan. It should be noted that the main purpose of multi-stage filtration is to remove impurities such as suspended matter and colloids in the raw water that hinder the operation of subsequent processes. Automatic backwashing can be set according to the pressure difference or the operating time. The backwashing process is completed automatically without manual intervention.

[0055] In summary, the brine first enters the first high-efficiency self-cleaning filter 3, intercepts and removes impurities such as suspended solids and colloids that are larger than the filtration accuracy, and those that are smaller than the filtration accuracy pass through with the produced water and enter the second high-efficiency self-cleaning filter 4, and then undergo fine filtration by the second high-efficiency self-cleaning filter 4. Two cascade filtration processes with different precisons are used to achieve water production that meets the standards.

[0056] In summary, compared with the prior art, the salt lake brine filtration system of the utility model uses multi-stage high-efficiency self-cleaning filtration technology to separate suspended matter from brine, and the backwash water is collected and discharged back to the salt pan. The system can remove more than 90% of suspended matter from brine, and the filtered brine can be used in the production line of comprehensive utilization of brine resources, greatly reducing the problem of pollution and blockage in the back section; the utility model has the following beneficial effects:

[0057] 1. Compared with the ultrafiltration membrane process, the multi-stage filtration process is not affected by temperature and the operating flow is more stable.

[0058] 2. The overall system investment is greatly reduced, and the investment cost can be reduced by 50%.

[0059] 3. The floor space occupied is 30% of that of the traditional filtration process.

[0060] 4. Compared with the multi-media filtration process, there will be no problem of filter material compaction.

[0061] 5. The equipment processing cycle is short and the delivery cycle is fast.

[0062] 6. Modular design.

[0063] 7. The filtration accuracy can be customized according to special requirements, which is more in line with actual needs.

[0064] 8. Easy to operate and zero maintenance.

[0065] The technical solutions provided by the embodiments of the present invention are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the embodiments of the present invention. The description of the above embodiments is only applicable to help understand the principles of the embodiments of the present invention. At the same time, for those skilled in the art, according to the embodiments of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A new type of salt lake brine multi-stage filtration system, characterized by: It includes a brine delivery pump, a first high-efficiency self-cleaning filter, a second high-efficiency self-cleaning filter and a brine storage tank after filtration; the brine delivery pump extracts brine to be filtered from the salt pan and delivers it to the water inlet of the first high-efficiency self-cleaning filter through a brine delivery pipe; the water outlet of the first high-efficiency self-cleaning filter after coarse filtration is connected to the water inlet of the second high-efficiency self-cleaning filter; The water outlet end of the second high-efficiency self-cleaning filter after fine filtration is connected to the water inlet end of the filtered brine storage tank; the output end of the filtered brine storage tank is connected to the connection end of the next process.

2. A novel salt lake brine multi-stage filtration system according to claim 1, characterized in that: The flow rate of the brine delivery pump can be set according to the needs of different projects. The material of the brine delivery pump is one of 316L, 2205, 2507 stainless steel and titanium. The water supply head of the brine delivery pump is set according to the pipeline distance position; the start and stop of the brine delivery pump is automatically controlled according to the liquid level.

3. A novel salt lake brine multi-stage filtration system according to claim 1, characterized in that: The size of the brine delivery pipe is determined by the amount of water to be processed, and the pipe material of the brine delivery pipe is selected from one of PVC / PE / 2205 stainless steel.

4. A novel salt lake brine multi-stage filtration system according to claim 1, characterized in that: The first high-efficiency self-cleaning filter is a high-efficiency self-cleaning filter, whose scale is selected according to the amount of water treated, the cylinder material is carbon steel rubber lining or 2205 stainless steel, the filter material is 2205 stainless steel, the filter accuracy is 500-1000μm, and it automatically starts the self-cleaning process according to the inlet and outlet water pressure difference set by the automatic control system.

5. A novel salt lake brine multi-stage filtration system according to claim 1, characterized in that: The second high-efficiency self-cleaning filter is a high-efficiency self-cleaning filter, and its scale is selected according to the amount of water treated. The cylinder material is carbon steel rubber lining or 2205 stainless steel, the filter material is 2205 stainless steel, and the filter accuracy is 50-300μm. It automatically starts the self-cleaning process according to the inlet and outlet water pressure difference set by the automatic control system.

6. A novel salt lake brine multi-stage filtration system according to claim 1, characterized in that: The filtering mode between the first high-efficiency self-cleaning filter and the second high-efficiency self-cleaning filter is switched between single-unit filtering and series combination filtering.

7. A novel salt lake brine multi-stage filtration system according to claim 1, characterized in that: The first high-efficiency self-cleaning filter is connected to a first backwashing device.

8. A novel salt lake brine multi-stage filtration system according to claim 1, characterized in that: The second high-efficiency self-cleaning filter is connected to a second backwashing device.

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