Slag liquid filtering device
By combining a hydrocyclone separator, a membrane filtration system, and a plate and frame filter press system, the problems of filter device damage and low filtrate quality caused by high solid content in the slurry mixture are solved, achieving efficient solid-liquid separation and high-quality filtrate production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-20
- Publication Date
- 2026-03-10
AI Technical Summary
In existing solid waste treatment processes, the high solid content of the solid-liquid mixture leads to easy damage to the filtration device and low filtrate quality. Furthermore, the ceramic membrane filtration system is prone to clogging, making it difficult to effectively separate solids and liquids.
A combination of hydrocyclone separator, membrane filtration system and plate and frame filter press system is used. The hydrocyclone separator initially separates large particles, the membrane filtration system further filters slurry and mud, and the plate and frame filter press system processes the mortar to finally obtain high-quality filtrate.
It achieves efficient solid-liquid separation of sludge and liquid, improves the quality of filtrate, avoids damage and clogging of the filtration device, and meets the demand for high-quality filtrate.
Smart Images
Figure CN223980247U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of chemical equipment technology, and more specifically, to a sludge filtration device. Background Technology
[0002] In chemical processes such as solid waste treatment, the crushing, dissolving, or water quenching of solid waste often yields a slag-liquid mixture with a high solid content. This mixture is often complex in composition and requires multiple processing steps. Solid-liquid separation of the slag-liquid mixture to obtain high-quality filtrate is beneficial for subsequent processing. Filtrate obtained by using only a plate and frame filter press generally still contains a high amount of suspended solids, increasing the difficulty of subsequent filtrate processing. Furthermore, excessively high solid content in the slag-liquid mixture can easily damage and clog ceramic membrane filtration systems. Therefore, designing a reasonably structured slag-liquid filtration device is crucial. Utility Model Content
[0003] In view of the above-mentioned technical problems of large insoluble particles in the sludge and liquid, easy damage to the filtration device during filtration, and low quality of the product filtrate, a sludge and liquid filtration device is provided for filtering sludge and liquid mixtures under conditions where high filtrate quality is required.
[0004] The technical means adopted in this utility model are as follows:
[0005] A sludge filtration device includes a hydrocyclone separator, a membrane filtration system, and a plate and frame filter press system;
[0006] The slag-liquid inlet of the hydrocyclone is connected to a slag-liquid tank containing slag to be treated via a pipeline;
[0007] The membrane filtration system is equipped with a liquid inlet, a filtrate outlet, and a slurry outlet;
[0008] The overflow port at the top of the hydrocyclone separator and the liquid outlet of the plate and frame filter press system are respectively connected to the liquid inlet of the membrane filtration system through pipelines.
[0009] The sand discharge port at the bottom of the hydrocyclone separator and the slurry outlet of the membrane filtration system are respectively connected to the slurry inlet of the plate and frame filter press system through pipelines.
[0010] The filtrate outlet of the membrane filtration system is connected to the product solution tank via a pipeline.
[0011] Furthermore, the hydrocyclone separator is used to filter the slag liquid, separating the slag liquid into a slurry without large particles and a mortar containing more large particles;
[0012] The membrane filtration system is used to filter the slurry discharged from the hydrocyclone separator and the filtrate discharged from the plate and frame filter press system. The filtrate obtained after filtration is the product solution after sludge treatment.
[0013] The plate and frame filter press system is used to filter the slurry discharged from the hydrocyclone separator and the mud discharged from the membrane filtration system.
[0014] Furthermore, a mud pump I for conveying sludge is provided between the sludge tank and the hydrocyclone separator.
[0015] Furthermore, it also includes a mud tank for collecting the slurry discharged from the hydrocyclone separator and the mud discharged from the membrane filtration system; the mud outlet of the membrane filtration system and the sand discharge port of the hydrocyclone separator are respectively connected to the inlet of the mud tank through pipelines, and the outlet of the mud tank is connected to the mud inlet of the plate and frame filter press system through a pipeline.
[0016] Furthermore, a mud pump II for conveying mud is provided between the mud tank and the plate and frame filter press system.
[0017] Furthermore, the membrane inside the membrane filtration system is a flat sheet membrane made of silicon carbide.
[0018] Furthermore, a backwash pump I is provided between the product solution tank and the membrane filtration system. The backwash pump I is used to periodically deliver the product solution to the membrane filtration system for backwashing.
[0019] Furthermore, it also includes a backwash pump II and a cleaning tank containing acidic cleaning solution. The backwash pump II is located between the outlet of the cleaning tank and the inlet of the membrane filtration system, and is used to periodically deliver the acidic cleaning solution from the cleaning tank to the membrane filtration system for rinsing.
[0020] Compared with the prior art, the present invention has the following advantages:
[0021] The sludge filtration device provided by this utility model filters out large insoluble particles in the sludge by setting up a hydrocyclone separator, and then filters the filtrate produced after the mud is filtered by setting up a membrane filtration system and a plate and frame filter press system, finally obtaining a product solution with high filtrate quality.
[0022] Based on the above reasons, this utility model can be widely promoted in the field of chemical solid waste treatment. Attached Figure Description
[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0024] Figure 1 This is a schematic diagram of the sludge filtration device described in this utility model. Detailed Implementation
[0025] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.
[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this utility model or its application or use. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0027] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0028] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.
[0029] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.
[0030] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.
[0031] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.
[0032] Example 1
[0033] like Figure 1 As shown, this utility model provides a slurry filtration device, including a hydrocyclone separator, a membrane filtration system, and a plate and frame filter press system;
[0034] The slag-liquid inlet of the hydrocyclone is connected to a slag-liquid tank containing slag to be treated via a pipeline;
[0035] The membrane filtration system is equipped with a liquid inlet, a filtrate outlet, and a slurry outlet;
[0036] The overflow port at the top of the hydrocyclone separator and the liquid outlet of the plate and frame filter press system are respectively connected to the liquid inlet of the membrane filtration system through pipelines.
[0037] The sand discharge port at the bottom of the hydrocyclone separator and the slurry outlet of the membrane filtration system are respectively connected to the slurry inlet of the plate and frame filter press system through pipelines.
[0038] The filtrate outlet of the membrane filtration system is connected to the product solution tank via a pipeline.
[0039] Furthermore, the hydrocyclone separator is used to filter large insoluble particles in the slag liquid, separating the slag liquid into a slurry (lower specific gravity) without large particles and a mortar (higher specific gravity) containing more large particles; the membrane filtration system is used to filter the slurry discharged from the hydrocyclone separator and the filtrate discharged from the plate and frame filter press system, and the filtrate obtained after filtration is the product solution after slag liquid treatment.
[0040] The plate and frame filter press system is used to filter the slurry discharged from the hydrocyclone separator and the mud discharged from the membrane filtration system.
[0041] Furthermore, a mud pump I for conveying sludge is provided between the sludge tank and the hydrocyclone separator.
[0042] Furthermore, it also includes a mud tank for collecting the slurry discharged from the hydrocyclone separator and the mud discharged from the membrane filtration system; the mud outlet of the membrane filtration system and the sand discharge port of the hydrocyclone separator are respectively connected to the inlet of the mud tank through pipelines, and the outlet of the mud tank is connected to the mud inlet of the plate and frame filter press system through a pipeline.
[0043] Furthermore, a mud pump II for conveying mud is provided between the mud tank and the plate and frame filter press system.
[0044] Furthermore, the membrane inside the membrane filtration system is a flat sheet membrane made of silicon carbide.
[0045] Furthermore, a backwash pump I is provided between the product solution tank and the membrane filtration system. The backwash pump I is used to periodically deliver the product solution to the membrane filtration system for backwashing.
[0046] Furthermore, it also includes a backwash pump II and a cleaning tank containing acidic cleaning solution. The backwash pump II is located between the outlet of the cleaning tank and the inlet of the membrane filtration system. It is used to periodically deliver the acidic cleaning solution from the cleaning tank to the membrane filtration system for rinsing. After the membrane filtration system is rinsed with the acidic cleaning solution, the product solution is delivered by the backwash pump I for backwashing. The acidic cleaning solution is recycled back to the cleaning tank after rinsing. The product solution after backwashing enters the mud tank.
[0047] Furthermore, the pipes used in the sludge filtration device, the mud pump I, the mud pump II, the backwash pump I, and the backwash pump II are all wear-resistant and resistant to material corrosion.
[0048] Furthermore, the cyclone separator is a ZVF12-11g model cyclone separator, designed for a pressure drop of 0.21 MPa during use;
[0049] The membrane filtration system uses a ceramic membrane filter with a membrane spacing of 10 mm, a membrane pore size of 100 nm, and a sludge / liquid treatment capacity of 120 m³ / h. 3 / h;
[0050] The plate and frame filter press system uses an XAZGFQ700 / 200-UK plate and frame filter press with a feed pressure of 0.6MPa-0.8MPa, a pressing pressure of 12MPa, a back pressure of 30MPa, and a filtration pressure of 0.8MPa.
[0051] The sludge-liquid filtration device provided by this utility model can filter sludge-liquid mixtures containing large particles, and the quality of the filtered product filtrate is good; specific working process:
[0052] The sludge to be treated is collected and mixed in the sludge tank, and then sent to a hydrocyclone separator by mud pump I. The sludge with a lower specific gravity discharged from the upper part of the hydrocyclone separator enters the membrane filtration system for filtration. The slurry with a higher specific gravity discharged from the sand discharge port at the lower part of the hydrocyclone separator is collected and mixed with the mud produced by the membrane filtration system in the mud tank, and then sent to the plate and frame filter press system for filtration by mud pump II. The filter cake produced by the plate and frame filter press system is sent to external disposal, and the filtrate produced by the plate and frame filter press system is then sent to the membrane filtration system for filtration. The filtrate discharged from the membrane filtration system is the product solution, which is collected in the product solution tank and then sent to the next process.
[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A slag liquid filtering device, characterized by, The cyclone separator, the membrane filtration system and the plate-and-frame filter system are included. The residue-liquid inlet of the cyclone separator is connected to the residue-liquid pool through a pipeline. The membrane filtration system is provided with a liquid inlet, a filtrate outlet and a slurry outlet. The overflow outlet of the upper part of the cyclone separator and the liquid outlet of the plate-and-frame filter system are respectively connected to the liquid inlet of the membrane filtration system through pipelines. The sand outlet of the lower part of the cyclone separator and the slurry outlet of the membrane filtration system are respectively connected to the slurry inlet of the plate-and-frame filter system through pipelines. The filtrate outlet of the membrane filtration system is connected to the product solution tank through a pipeline.
2. The slag liquid filtering device according to claim 1, characterized in that, The cyclone separator is used to filter large-particle insoluble substances in the residue liquid, so that the residue liquid is separated into slurry containing no large-particle substances and sand slurry containing more large-particle substances. The membrane filtration system is used to filter the slurry discharged from the cyclone separator and the filtrate discharged from the plate-and-frame filter system, and the filtrate obtained after the filtration is the product solution after the residue liquid treatment. The plate-and-frame filter system is used to filter the sand slurry discharged from the cyclone separator and the slurry discharged from the membrane filtration system.
3. The slag liquid filtering device according to claim 1, characterized in that, A slurry pump I for conveying the residue liquid is arranged between the residue-liquid pool and the cyclone separator.
4. The slag liquid filtering device according to claim 1, characterized by A slurry tank is further included, which is used to collect the sand slurry discharged from the cyclone separator and the slurry discharged from the membrane filtration system; the slurry outlet of the membrane filtration system and the sand outlet of the cyclone separator are respectively connected to the feed inlet of the slurry tank through pipelines, and the discharge outlet of the slurry tank is connected to the slurry inlet of the plate-and-frame filter system through a pipeline.
5. The slag liquid filtering device according to claim 4, characterized in that, A slurry pump II for conveying the slurry is arranged between the slurry tank and the plate-and-frame filter system.
6. The slag liquid filtering device according to claim 1, characterized in that, The membrane sheet inside the membrane filtration system adopts a flat membrane form, and the material of the membrane sheet is silicon carbide.
7. The slag liquid filtering device according to claim 1, characterized in that, A backwashing pump I is arranged between the product solution tank and the membrane filtration system, which is used to periodically convey the product solution to the membrane filtration system for backwashing.
8. The slag liquid filtering device according to claim 7, characterized in that, A backwashing pump II and a cleaning tank containing an acidic cleaning liquid are further included; the backwashing pump II is arranged between the liquid outlet of the cleaning tank and the liquid inlet of the membrane filtration system, and is used to periodically convey the acidic cleaning liquid in the cleaning tank to the membrane filtration system for cleaning.