A salt sludge treatment system
By introducing a crusher and a microwave drying device into the salt mud treatment system, the problems of slow salt mud dissolution and low stirring efficiency have been solved, realizing an efficient and environmentally friendly continuous process for salt mud treatment and improving the overall efficiency of salt mud treatment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG QUANYI ENVIRONMENTAL PROTECTION TECH CO LTD
- Filing Date
- 2025-07-25
- Publication Date
- 2026-06-26
Smart Images
Figure CN224411610U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of salt mud treatment technology, and in particular relates to a salt mud treatment system. Background Technology
[0002] With the continuous expansion of the chlor-alkali industry, the production of salt mud is also constantly increasing. As a byproduct of the crude salt refining process in the chlor-alkali industry, the composition of salt mud varies depending on the industrial salt or brine used. Generally speaking, however, salt mud mainly contains calcium carbonate, calcium sulfate, magnesium carbonate, sodium chloride, and clay, while also containing small amounts of barium sulfate, ferric oxide, and alumina. According to relevant literature, the sodium chloride content (dry basis) in salt mud fluctuates between 5% and 50%, significantly exceeding the requirement for Class I landfills that the total water-soluble salt content in solids be less than 2% (dry basis). Direct landfilling of this salt mud would cause serious pollution to the surrounding environment.
[0003] Currently, the first step in the comprehensive treatment of salt mud is to clean it to reduce its salt content. Existing salt mud cleaning equipment includes a primary salt mud filter press, a salt mud dissolving tank, and a secondary salt mud filter press. The salt mud dissolving tank is equipped with a mud agitator. The salt mud is first filtered, and then water is added to the filtered salt mud for stirring and washing to fully dissolve the salt in the mud. Then, a secondary filter press is performed, which significantly reduces the salt content in the salt mud.
[0004] However, in this method, when the salt mud is stirred and washed, the mud cake produced after one filter press is large in volume, and the salt in the mud dissolves slowly during the stirring process, which seriously affects the overall efficiency of salt mud treatment. Utility Model Content
[0005] In view of the defects or deficiencies in the existing technology, this utility model provides a salt mud treatment system that can improve the salt dissolution rate in salt mud and improve the overall efficiency of salt mud treatment.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] An embodiment of this utility model provides a brine sludge treatment system, including a primary brine sludge tank. The primary brine sludge tank is connected to the inlet of a primary filter press via a pipeline. A conveying channel is provided below the discharge port of the primary filter press. A microwave drying device is installed on the conveying channel. The other end of the conveying channel is connected to a crusher. The discharge port of the crusher is connected to the inlet of a sludge washing tank. The discharge port of the sludge washing tank is connected to a secondary filter press via a pipeline.
[0008] Furthermore, a first filter press pump is installed on the pipeline between the primary brine sludge tank and the primary filter press.
[0009] Furthermore, the drain outlet of the primary filter press is connected to the primary filtrate tank via a pipe.
[0010] Furthermore, the conveying channel is inclined, with its height near the primary filter press being greater than its height near the crusher.
[0011] Furthermore, the mud washing tank is located below the crusher, and the discharge port of the crusher is positioned directly opposite the inlet of the mud washing tank.
[0012] Furthermore, the sludge washing tank is connected to the process water tank and the secondary filtrate tank via pipelines.
[0013] Furthermore, a stirring device is installed in the mud washing tank to dissolve the crushed mud cake.
[0014] Furthermore, the discharge port of the sludge washing tank is connected to a secondary filter press via a pipeline, and a second filter press pump is installed on the pipeline between the sludge washing tank and the secondary filter press.
[0015] Furthermore, the secondary filtrate tank is connected to the primary filtrate tank via a pipeline.
[0016] Furthermore, the process water tank is connected to the primary filtrate tank via a pipeline.
[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0018] 1. This utility model sets up a crusher between the primary filter press and the sludge washing tank. The crusher breaks down the sludge cake produced by the primary filter press. The particle size of the crushed sludge cake is reduced, which can greatly shorten the dissolution time of salt in the sludge and improve the problems of slow dissolution of large sludge cakes and low stirring efficiency, thereby improving the overall efficiency of sludge treatment.
[0019] 2. This utility model uses a microwave drying device installed on the conveying pipe channel to heat the mud cake with low-energy microwave radiation generated by the microwave drying device, thereby reducing the moisture content of the mud cake, reducing the stickiness of the mud cake, and solving the problem of adhesion and blockage when the mud cake is broken.
[0020] 2. This utility model sets the conveying pipeline at an incline, so that the filtered mud cake can slide directly into the crusher, effectively preventing the mud cake from falling to the outside and reducing material waste and environmental pollution. Attached Figure Description
[0021] Figure 1 This is a structural diagram of the salt mud treatment system in an embodiment of this utility model;
[0022] The components include: 1. Primary brine sludge tank; 2. Primary filter press; 3. First filter press pump; 4. Primary filtrate tank; 5. Conveying channel; 6. Crusher; 7. Microwave drying device; 8. Sludge washing tank; 9. Process water tank; 10. Secondary filtrate tank; 11. Secondary filter press; and 12. Second filter press pump. Detailed Implementation
[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0024] A typical embodiment of this utility model is as follows: Figure 1 As shown, a salt sludge treatment system includes a primary brine sludge tank 1, in which salt sludge is stored. The primary brine sludge tank 1 is connected to the inlet of a primary filter press 2 via a pipeline. A first filter press pump 3 is installed on the pipeline between the primary brine sludge tank 1 and the primary filter press 2. The sludge in the primary brine sludge tank 1 is pumped into the primary filter press 2 via the first filter press pump 3. The primary filter press 2 performs primary filtration on the salt sludge. The discharge port of the primary filter press 2 is connected to a primary filtrate tank 4 via a pipeline. The filtrate produced after filtration enters the primary filtrate tank 4 via a pipeline.
[0025] A conveying channel 5 is provided below the discharge port of the primary filter press 2. The other end of the conveying channel 5 is connected to the crusher 6 above it. The conveying channel 5 is inclined, and its height near the primary filter press 2 is greater than its height near the crusher 6. The mud cake after being filtered by the primary filter press 2 slides into the crusher 6 through the conveying channel 5 for crushing.
[0026] In this embodiment, the crusher 6 is a common toothed roller crusher that can crush mud cake into particles.
[0027] By setting an inclined conveying channel 5 below the primary filter press 2, the filter cake can be directly slid into the crusher 6, reducing manual handling costs and effectively preventing the cake from falling to the outside, thus reducing material waste and environmental pollution.
[0028] The conveying channel 5 is also equipped with a microwave drying device 7. The microwave drying device 7 uses common microwave drying equipment on the market. The low-energy microwave radiation generated heats and dries the mud cake. The microwave drying device 7 generates thermal stress inside the mud cake, which helps to generate cracks, improves crushing efficiency, reduces viscosity, and reduces adhesion and blockage during crushing.
[0029] A mud washing tank 8 is provided below the crusher 6. The discharge port of the crusher 6 is set directly opposite the inlet of the mud washing tank 8. The mud cake after being crushed by the crusher 6 falls directly into the mud washing tank 8.
[0030] By adding a microwave drying device 7 and a crusher 6 between the primary filter press 2 and the sludge washing tank 8, a continuous process of "primary filter press → drying → crushing → sludge washing" is formed. The introduction of the microwave drying device 7 reduces the moisture content of the sludge cake through low-energy microwave radiation, solving the adhesion and clogging problem in the crushing process from the source, while improving crushing efficiency.
[0031] The sludge washing tank 8 is connected to the process water tank 9 and the secondary filtrate tank 10 via pipes. The process water tank 9 contains usable water from electrolysis or other processes. The usable water in the process water tank 9 and the brine in the secondary filtrate tank 10 enter the sludge washing tank 8 through pipes. The sludge washing tank 8 is equipped with a stirring device. Under the action of the stirring device, the crushed sludge cake is dissolved. Since the particle size is reduced after crushing, the dissolution time can be shortened by about 30%, which improves the problem of slow dissolution of large sludge cakes and low stirring efficiency.
[0032] The discharge port of the sludge washing tank 8 is connected to the secondary filter press 11 through a pipeline. A second filter press pump 12 is installed on the pipeline between the sludge washing tank 8 and the secondary filter press 11. The second filter press pump 12 is used to pump the sludge in the sludge washing tank 8 into the secondary filter press 11. The discharge port of the secondary filter press 11 is connected to the secondary filtrate tank 10. The filtrate produced after the secondary filtration enters the secondary filtrate tank 10. The sludge cake after the secondary filtration is discharged through the discharge port and transported away for processing.
[0033] The secondary filtrate tank 10 is connected to the primary filtrate tank 4 through a pipeline. The filtrate in the secondary filtrate tank 10 needs to be controlled at a certain level. Excess filtrate enters the primary filtrate tank 4 through a pipeline to desalinate.
[0034] Process water tank 9 is connected to primary filtrate tank 4 via a pipeline. Usable water from electrolysis or other processes enters process water tank 9. Process water tank 9 needs to maintain a certain liquid level for use in mud washing. Excess usable water overflows into primary filtrate tank 4 to desalinate.
[0035] Furthermore, concentrated water can be connected to process water tank 9 as a supplement to the electrolytic drainage water. When the high salt content of the drainage water causes the mud cake to be substandard, concentrated water can be used instead.
[0036] By installing a crusher between the primary filter press and the sludge washing tank, the sludge cake produced by the primary filter press is crushed. The particle size of the crushed sludge cake is reduced, which can greatly shorten the dissolution time of salt in the sludge and improve the problems of slow dissolution of large sludge cakes and low stirring efficiency, thereby improving the overall efficiency of sludge treatment.
[0037] The above description is merely a preferred embodiment of this utility model and is not intended to limit this disclosure. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A salt mud treatment system, characterized in that, It includes a primary brine sludge tank, which is connected to the inlet of a primary filter press via a pipeline. A conveying channel is provided below the discharge port of the primary filter press, and a microwave drying device is installed on the conveying channel. The other end of the conveying channel is connected to a crusher. The discharge port of the crusher is connected to the inlet of a sludge washing tank, and the discharge port of the sludge washing tank is connected to a secondary filter press via a pipeline.
2. The salt mud treatment system as described in claim 1, characterized in that, A first filter press pump is installed on the pipeline between the primary brine sludge tank and the primary filter press.
3. The salt mud treatment system as described in claim 1, characterized in that, The drain outlet of the primary filter press is connected to the primary filtrate tank via a pipe.
4. The salt mud treatment system as described in claim 1, characterized in that, The conveying channel is inclined, with the height of the end near the primary filter press being greater than the height of the end near the crusher.
5. The salt mud treatment system as described in claim 1, characterized in that, The mud washing tank is located below the crusher, and the discharge port of the crusher is positioned directly opposite the inlet of the mud washing tank.
6. The salt mud treatment system as described in claim 1, characterized in that, The sludge washing tank is connected to the process water tank and the secondary filtrate tank via pipelines.
7. The salt mud treatment system as described in claim 1, characterized in that, The mud washing tank is equipped with a stirring device for dissolving the crushed mud cake.
8. The salt mud treatment system as described in claim 1, characterized in that, A second filter press pump is installed on the pipeline between the sludge washing tank and the secondary filter press.
9. A salt mud treatment system as described in claim 6, characterized in that, The secondary filtrate tank is connected to the primary filtrate tank via a pipeline.
10. A salt mud treatment system as described in claim 6, characterized in that, The process water tank is connected to the primary filtrate tank via a pipeline.