An industrial waste salt treatment system

Abstract

This utility model relates to the field of industrial waste salt treatment technology, aiming to solve the problems of high treatment cost and low treatment efficiency in existing industrial waste salt treatment systems. This utility model provides an industrial waste salt treatment system, including a first preheating unit, a second premixing unit, and a treatment unit. The first preheating unit is connected to the second premixing unit; the second premixing unit is connected to the treatment unit; the treatment unit is connected to multiple air extraction units; and the treatment unit is connected to multiple material extraction units. By preheating sodium persulfate, this utility model can reduce the heating load of the subsequent treatment units, thereby facilitating flexible control of the treatment temperature. This allows for flexible temperature adjustment, improving the removal effect and efficiency of TOC (Total Organic Carbon), and also reducing energy consumption and production costs.

Description

Technical Field

[0001] This utility model relates to the field of industrial waste salt treatment technology, and more specifically, to an industrial waste salt treatment system. Background Technology

[0002] With the acceleration of industrialization, the problem of industrial waste salt disposal has become increasingly serious, especially in industries such as chemical, power, and metallurgy, where waste salt often contains large amounts of total organic carbon (TOC). If these organic pollutants in waste salt are not effectively treated, their discharge into the environment will seriously affect water and soil quality, endangering the ecological environment and human health.

[0003] Traditional industrial waste salt treatment methods, such as adsorption, pyrolysis, and biodegradation, typically suffer from drawbacks such as low treatment efficiency, high energy consumption, or the need for large amounts of chemical reagents. For example, the patent with publication number CN207222538U discloses a waste salt thermal desorption device. Specifically, in this device, waste salt in a multi-stage heating reactor is heated to 500-650°C under anaerobic conditions to undergo dehydration, organic matter evaporation, and pyrolysis reactions. The resulting oil-gas mixture enters a high-temperature dust removal unit through a top pipe for particulate dust removal, and then enters an oil-gas condensation unit for cooling. After separation, non-condensable gas and condensate are obtained. The condensate is then treated by a liquid purification and recovery unit to obtain circulating water and organic liquid for recycling.

[0004] Based on the above description, there is an urgent need for an efficient, rapid, and economical industrial waste salt treatment system to remove TOC content from industrial waste salt and improve the environmental friendliness of the waste salt. Utility Model Content

[0005] The purpose of this invention is to provide an industrial waste salt treatment system, which aims to solve the technical problems of high treatment cost and low treatment efficiency of existing industrial waste salt treatment systems.

[0006] The embodiments of this utility model are achieved through the following technical solutions:

[0007] An industrial waste salt treatment system includes a first preheating unit, a second premixing unit, and a treatment unit; the first preheating unit is connected to the second premixing unit; the second premixing unit is connected to the treatment unit; the treatment unit is connected to multiple air extraction units; and the treatment unit is connected to multiple material extraction units.

[0008] Preferably, the second premixing unit includes multiple stirring vessels; the stirring vessels are connected to a liquid inlet pipe and a feed pipe; the stirring vessels are connected to the processing unit through a discharge pipe.

[0009] Preferably, the processing unit includes multiple reaction towers; the discharge pipe is connected to the middle of the reaction towers; the air extraction unit is connected to the top of the reaction towers; and the material extraction unit is connected to the bottom of the reaction towers.

[0010] Preferably, a first temperature sensor is provided at one end of the discharge pipe near the reaction tower.

[0011] Preferably, the reaction tower is divided into a filtration chamber and a heating chamber by a perforated plate; the discharge pipe is connected to the heating chamber; and the heating chamber is equipped with a second temperature sensor.

[0012] Preferably, the heating chamber is equipped with a stirrer.

[0013] Preferably, a filter basket is installed on top of the reaction tower; the filter basket is located inside the filter chamber; the air extraction unit includes an air extraction pipe; the air extraction pipe is connected to the filter chamber.

[0014] Preferably, the material extraction unit includes multiple material extraction pipes; the material extraction pipes are connected to the bottom of the heating chamber.

[0015] The technical solution of this utility model embodiment has at least the following advantages and beneficial effects:

[0016] This invention involves preheating and melting sodium persulfate in a heating kettle, then pumping the liquid sodium persulfate to a second premixing unit to premix with waste salt, and finally pumping it to a treatment unit for heating and reaction. After the reaction, carbon molecules undergo oxidation to form carbon dioxide, which is then extracted through a vacuum unit. The treated material is then extracted through a material extraction unit. The preheating of the sodium persulfate reduces the heating load on the subsequent treatment unit, allowing for flexible control of the treatment temperature. This improves the removal efficiency and effectiveness of total organic carbon (TOC) removal, while also reducing energy consumption and production costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the system of this utility model;

[0018] Figure 2 This is a schematic diagram of the reaction tower in this utility model.

[0019] Icons: 1-First preheating unit, 2-Second premixing unit, 21-Stirring vessel, 3-Processing unit, 31-Reaction tower, 4-Second temperature sensor, 5-Agitator, 6-Feed pipe, 7-Filter basket, 8-Air extraction unit, 9-Material extraction unit, 10-Orifice plate. Detailed Implementation

[0020] The specific implementation method is described below with reference to the accompanying drawings.

[0021] Example 1

[0022] Please see Figures 1 to 2 The present invention provides the following technical solution: an industrial waste salt treatment system, applicable to situations where sodium persulfate is used for waste salt treatment.

[0023] Specifically, such as Figure 1 As shown, an industrial waste salt treatment system includes a first preheating unit 1, a second premixing unit 2, and a treatment unit 3; the first preheating unit 1 is connected to the second premixing unit 2; the second premixing unit 2 is connected to the treatment unit 3; the treatment unit 3 is connected to multiple air extraction units 8; and the treatment unit 3 is connected to multiple material extraction units 9.

[0024] In this embodiment, the first preheating unit 1 includes a heating kettle, which preheats and melts sodium persulfate. The liquid sodium persulfate is then pumped to the second premixing unit 2 to premix with waste salt. The mixture is then pumped to the processing unit for heating and reaction. After the reaction, carbon molecules undergo oxidation to form carbon dioxide, which is then extracted by the extraction unit 8. The processed material is then extracted by the material extraction unit 9.

[0025] The reaction principle in this embodiment is as follows: by adding sodium persulfate solution to the waste salt as an oxidizing solvent, the organic carbon in the sample can be oxidized. The carbon molecules are oxidized to form carbon dioxide, which promotes the removal of TOC. The preheating of sodium persulfate can reduce the heating load of the subsequent treatment unit, thereby facilitating flexible control of the treatment temperature of the treatment unit. This allows for flexible adjustment of the treatment temperature, improving the TOC removal effect and efficiency, and also reducing energy consumption and production costs.

[0026] Specifically, such as Figure 1 As shown, the second premixing unit 2 includes multiple mixing vessels 21; the mixing vessels 21 are connected to a liquid inlet pipe and a feed pipe 6; the mixing vessels 21 are connected to the processing unit 3 through a discharge pipe.

[0027] In this embodiment, the stirring vessel 21 is a jacketed insulated stirring vessel commonly used in the art.

[0028] Specifically, such as Figure 1 As shown, the processing unit 3 includes multiple reaction towers 31; the discharge pipe is connected to the middle of the reaction tower 31; the air extraction unit 8 is connected to the top of the reaction tower 31; and the material extraction unit 9 is connected to the bottom of the reaction tower 31.

[0029] Specifically, such as Figure 1 and Figure 2 As shown, a first temperature sensor is installed at the end of the discharge pipe near the reaction tower 31. The reaction tower 31 is divided into a filtration chamber and a heating chamber by an orifice plate 10; the discharge pipe is connected to the heating chamber; a second temperature sensor 4 is installed in the heating chamber. A stirrer 5 is installed in the heating chamber.

[0030] In this embodiment, the perforated plate 10 can be provided with an arc-shaped outer edge, so that it can be embedded in the annular groove on the inner side wall of the reaction tower 31, and thus can rotate together with the stirrer. By using the perforated plate 10, it can both allow air to pass through and prevent a large amount of material from splashing into the filter chamber during the stirring process.

[0031] Specifically, such as Figure 2 As shown, a filter basket 7 is mounted on top of the reaction tower 31; a filter chamber is located inside the filter basket 7; the exhaust unit 8 includes an exhaust pipe; the exhaust pipe is connected to the filter chamber. The material extraction unit 9 includes multiple material extraction pipes; the material extraction pipes are connected to the bottom of the heating chamber.

[0032] In this embodiment, the filter basket 7 is used to fill carbon dioxide desiccant for preliminary treatment of carbon dioxide so that it can be extracted by the extraction pipe.

Claims

1. An industrial waste salt treatment system, characterized in that: It includes a first preheating unit (1), a second premixing unit (2), and a processing unit (3); the first preheating unit (1) is connected to the second premixing unit (2); the second premixing unit (2) is connected to the processing unit (3); the processing unit (3) is connected to multiple air extraction units (8); the processing unit (3) is connected to multiple material extraction units (9).

2. The industrial waste salt treatment system according to claim 1, characterized in that: The second premixing unit (2) includes multiple stirring vessels (21); the stirring vessels (21) are connected to a liquid inlet pipe and a feed pipe (6); the stirring vessels (21) are connected to the processing unit (3) through a discharge pipe.

3. The industrial waste salt treatment system according to claim 2, characterized in that: The processing unit (3) includes multiple reaction towers (31); the discharge pipe is connected to the middle of the reaction tower (31); the air extraction unit (8) is connected to the top of the reaction tower (31); and the material extraction unit (9) is connected to the bottom of the reaction tower (31).

4. The industrial waste salt treatment system according to claim 3, characterized in that: A first temperature sensor is provided at one end of the discharge pipe near the reaction tower (31).

5. The industrial waste salt treatment system according to claim 3 or 4, characterized in that: The reaction tower (31) is divided into a filtration chamber and a heating chamber by a perforated plate (10); the discharge pipe is connected to the heating chamber; the heating chamber is equipped with a second temperature sensor (4).

6. The industrial waste salt treatment system according to claim 5, characterized in that: The heating chamber is equipped with a stirrer (5).

7. The industrial waste salt treatment system according to claim 5, characterized in that: A filter basket (7) is mounted on top of the reaction tower (31); the filter basket (7) is located inside the filter chamber; the air extraction unit (8) includes an air extraction pipe; the air extraction pipe is connected to the filter chamber.

8. The industrial waste salt treatment system according to claim 7, characterized in that: The material extraction unit (9) includes multiple material extraction pipes; the material extraction pipes are connected to the bottom of the heating chamber.

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