Soil pollution pyrolysis treatment device
The soil pollution thermal treatment device efficiently separates and treats gas, liquid, and solid phases, addressing inefficiencies and costs in existing methods and reducing secondary pollution.
Patent Information
- Application Number
- CN202422141138.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-02
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-09-02
AI Technical Summary
The existing soil pollution repair methods are inefficient, costly and may lead to secondary pollution, and the lack of effective gas, liquid and solid separation devices affect the treatment effect.
A soil pollution pyrolysis treatment device is designed, including a pyrolysis tank, a spiral stirrer and a heating rod. The exhaust gas and eluent are fully separated by heating and stirring, and the electrocatalytic effect is strengthened by using the anode material on the spiral stirrer, and the filter interceptor and condenser are combined for effective separation and treatment.
It realizes effective separation of waste gas and eluent in contaminated soil, facilitates subsequent treatment, reduces treatment costs, improves treatment efficiency, and avoids secondary pollution.
Smart Images
Figure CN223097612U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of soil treatment, and particularly relates to a soil pollution pyrolysis treatment device. Background Art
[0002] Organic pollutants enter the soil through leakage, penetration and other ways, resulting in environmental pollution. These organic substances may be toxic, carcinogenic or persistent, posing a threat to the ecosystem and human health. The treatment of polluted sludge is an important topic in the environmental protection field, directly affecting water bodies, soil and the surrounding ecological environment.
[0003] At present, the main methods for soil pollution remediation are physical, chemical and biological remediation technologies. However, these traditional remediation methods have the following main problems:
[0004] First, low efficiency: Traditional methods usually take a long time to significantly reduce the concentration of soil pollutants, and it is difficult to meet the urgent needs in practical applications.
[0005] Second, high cost: Many remediation methods require expensive equipment and reagents, and the overall remediation cost is relatively high, restricting large-scale applications.
[0006] Third, secondary pollution: Some methods may cause secondary pollution during the remediation process, such as chemical reagent residues or unqualified discharge of treatment waste liquid, further polluting the environment.
[0007] In the existing soil pollution remediation methods, there is no device for effectively and fully separating gas, liquid and solid in polluted soil, which affects the treatment effect when treating gas, liquid and solid separately. Summary of the Utility Model
[0008] In order to solve the above problems existing in the prior art, the purpose of the utility model is to provide a soil pollution pyrolysis treatment device that can effectively and fully separate gas, liquid and solid.
[0009] The technical solution adopted by the utility model is as follows:
[0010] A soil pollution pyrolysis treatment device includes a pyrolysis tank. A soil delivery pump is connected to the bottom of the pyrolysis tank. A spiral stirrer and heating rods are installed in the pyrolysis tank. A liquid collection section is connected to the top of the pyrolysis tank. An exhaust gas discharge pipe is connected to the top of the liquid collection section. A feeding track is connected to the upper part of the pyrolysis tank. An eluent discharge pipe is connected to the liquid collection section.
[0011] The pre-treated soil is fed into the pyrolysis tank from the bottom by a soil delivery pump. The heating rods in the pyrolysis tank heat the soil, and the spiral stirrer fully stirs the soil, so that the waste gas and the eluate in the contaminated soil are fully separated. The soil settled in the pyrolysis tank is output through the feeding track, the filtered eluate is discharged through the eluate discharge pipe, and the rising waste gas is discharged through the waste gas discharge pipe. The utility model can effectively and fully separate the waste gas and the eluate in the pre-treated contaminated soil, which is convenient for subsequent treatment of the soil, waste gas and eluate respectively.
[0012] As a preferred embodiment of the utility model, a filter interceptor is arranged at the upper part of the pyrolysis tank, and the feeding track is located at the lower side of the filter interceptor. The filter interceptor can block the soil and prevent large pieces of soil from entering the liquid collection section, so as to realize reliable separation of the soil and the eluate.
[0013] As a preferred embodiment of the utility model, the inlet of the soil delivery pump is connected with a soil eccentric reducer. The eccentric reducer can prevent the soil in the pipe from being blocked.
[0014] As a preferred embodiment of the utility model, the lower part of the pyrolysis tank is conical, and the outlet of the soil delivery pump is connected with the conical bottom of the pyrolysis tank.
[0015] As a preferred embodiment of the utility model, the liquid collection section gradually reduces in diameter from bottom to top. The lower end of the liquid collection section is smoothly transitioned with the pyrolysis tank, and the upper end of the liquid collection section is smoothly transitioned with the waste gas discharge pipe. The liquid collection section is a reduced-diameter pipe, which is convenient for fully discharging the eluate therein.
[0016] As a preferred embodiment of the utility model, the number of the spiral stirrers is several. The heating rods are arranged in the middle of the pyrolysis tank, and several spiral stirrers are arranged around the heating rods. The several spiral stirrers fully stir the soil to ensure more uniform soil treatment.
[0017] As a preferred embodiment of the utility model, the spiral stirrer is externally connected to the positive pole of the power supply, and an anode material is coated on the spiral stirrer. The anode material is coated on the stirring blades of the spiral stirrer, which can enhance the electrocatalytic effect on the soil and fully degrade the pollutants in the soil.
[0018] As a preferred embodiment of the utility model, the anode material is one of ruthenium oxide or iridium oxide layer made of titanium-based material, boron-doped diamond, lead dioxide, SnO2 and Ti / SnO2.
[0019] As a preferred embodiment of the utility model, the waste gas discharge pipe has a downward bending section, and the end of the downward bending section is connected with a closing section. The waste gas passes through the downward bending section, which can fully condense the liquid in the waste gas.
[0020] As a preferred embodiment of the present utility model, an exhaust gas condensate collector is connected to the bottom of the downward bending section. The condensate can be collected by the exhaust gas condensate collector, reducing the liquid in the exhaust gas and facilitating the treatment of the exhaust gas.
[0021] The beneficial effects of the present utility model are as follows:
[0022] 1. The pretreated soil is fed into the pyrolysis tank from the bottom by a soil transfer pump. The heating rods in the pyrolysis tank heat the soil, and the spiral stirrer fully stirs the soil, effectively separating the exhaust gas and the eluate in the contaminated soil. The soil settled in the pyrolysis tank is output through the feeding track, the filtered eluate is discharged through the eluate discharge pipe, and the rising exhaust gas is discharged through the exhaust gas discharge pipe. The present utility model can effectively and fully separate the exhaust gas and the eluate in the pretreated contaminated soil, facilitating the subsequent treatment of the soil, exhaust gas, and eluate respectively.
[0023] 2. The stirring blades of the spiral stirrer are coated with an anode material, which can enhance the electrocatalytic effect on the soil and fully degrade the pollutants in the soil. Description of the Drawings
[0024] Figure 1 is a schematic structural diagram of the present utility model;
[0025] Figure 2 is a sectional view of the present utility model.
[0026] In the figure: 1 - pyrolysis tank; 2 - soil transfer pump; 3 - spiral stirrer; 4 - heating rod; 5 - liquid collection section; 6 - exhaust gas discharge pipe; 7 - feeding track; 8 - eluate discharge pipe; 9 - soil eccentric reducer; 11 - filter interceptor; 61 - downward bending section; 62 - closing section; 63 - exhaust gas condensate collector. Detailed Embodiments
[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated herein can be arranged and designed in various different configurations.
[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the present invention claimed, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without creative efforts fall within the scope of protection of the present invention. It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments may be combined with each other.
[0029] As Figure 1 and Figure 2 shown, the pyrolysis treatment device for soil pollution of this embodiment includes a pyrolysis tank 1. A soil delivery pump 2 is connected to the bottom of the pyrolysis tank 1. A spiral stirrer 3 and heating rods 4 are installed in the pyrolysis tank 1. A liquid collection section 5 is connected to the top of the pyrolysis tank 1. An exhaust gas discharge pipe 6 is connected to the top of the liquid collection section 5. A feeding track 7 is connected to the upper part of the pyrolysis tank 1. An eluent discharge pipe 8 is connected to the liquid collection section 5.
[0030] The pretreated soil is fed into the pyrolysis tank 1 from the bottom by the soil delivery pump 2. The heating rods 4 in the pyrolysis tank 1 heat the soil, and the spiral stirrer 3 fully stirs the soil, so that the exhaust gas and eluent in the polluted soil are fully separated. The soil settled in the pyrolysis tank 1 is output through the feeding track 7, the filtered eluent is discharged through the eluent discharge pipe 8, and the rising exhaust gas is discharged through the exhaust gas discharge pipe 6. The present invention can effectively and fully separate the exhaust gas and eluent in the pretreated polluted soil, facilitating subsequent treatment of the soil, exhaust gas and eluent respectively.
[0031] Furthermore, a filter interceptor 11 is provided in the upper part of the pyrolysis tank 1, and the feeding track is located below the filter interceptor 11. The filter interceptor 11 can block the soil to prevent large pieces of soil from entering the liquid collection section 5, thereby realizing reliable separation of the soil and the eluent.
[0032] Among them, a soil eccentric reducer 9 is connected to the inlet of the soil delivery pump 2. The eccentric reducer can prevent soil blockage in the pipe.
[0033] The lower part of the pyrolysis tank 1 is conical, and the outlet of the soil delivery pump 2 is connected to the conical bottom of the pyrolysis tank 1.
[0034] The liquid collection section 5 gradually reduces in diameter from bottom to top. The lower end of the liquid collection section 5 is smoothly transitioned with the pyrolysis tank 1, and the upper end of the liquid collection section 5 is smoothly transitioned with the exhaust gas discharge pipe 6. The liquid collection section 5 is a reduced-diameter pipe, which is convenient for fully discharging the eluent therein.
[0035] Specifically, the number of the spiral stirrers 3 is several. The heating rods 4 are arranged in the middle of the pyrolysis tank 1, and several spiral stirrers 3 are arranged around the heating rods 4. The several spiral stirrers 3 fully stir the soil to ensure more uniform soil treatment.
[0036] Furthermore, the spiral agitator 3 is externally connected to the positive pole of a power supply, and an anode material is coated on the spiral agitator 3. The power supply voltage is 1-100 V, and the current density is 1-800 mA / cm2. The anode material is coated on the stirring blades of the spiral agitator 3, which can enhance the electrocatalytic effect on the soil and fully degrade the pollutants in the soil.
[0037] Among them, the anode material is a ruthenium oxide or iridium oxide layer made of a titanium-based material, boron-doped diamond, lead dioxide, SnO2, Ti / SnO2 and other conventional anode materials.
[0038] Furthermore, the exhaust gas discharge pipe 6 has a downward bending section 61, and the end of the downward bending section 61 is connected to a converging section 62. The exhaust gas passes through the downward bending section 61, which can fully condense the liquid in the exhaust gas.
[0039] The bottom of the downward bending section 61 is connected to an exhaust gas condensate collector 63. The condensate can be collected by the exhaust gas condensate collector 63, reducing the liquid in the exhaust gas and facilitating the treatment of the exhaust gas.
[0040] The present utility model is not limited to the above optional embodiments. Any person can obtain other various forms of products under the inspiration of the present utility model. However, no matter what changes are made in its shape or structure, as long as the technical solutions fall within the scope defined by the claims of the present utility model, they all fall within the protection scope of the present utility model.
Claims
1. A pyrolysis treatment device for soil pollution, characterized in that: It includes a pyrolysis tank (1). A soil delivery pump (2) is connected to the bottom of the pyrolysis tank (1). A spiral agitator (3) and heating rods (4) are installed in the pyrolysis tank (1). A liquid collection section (5) is connected to the top of the pyrolysis tank (1). An exhaust gas discharge pipe (6) is connected to the top of the liquid collection section (5). A feeding crawler (7) is connected to the upper part of the pyrolysis tank (1). An eluent discharge pipe (8) is connected to the liquid collection section (5).
2. The pyrolysis treatment device for soil pollution according to claim 1, wherein: A filter interceptor (11) is arranged in the upper part of the pyrolysis tank (1), and the feeding crawler is located below the filter interceptor (11).
3. The pyrolysis treatment device for soil pollution according to claim 1, characterized in that: The inlet of the soil delivery pump (2) is connected to a soil eccentric reducer (9).
4. A pyrolysis treatment device for soil pollution according to claim 1, characterized in that: The lower part of the pyrolysis tank (1) is conical, and the outlet of the soil delivery pump (2) is connected to the conical bottom of the pyrolysis tank (1).
5. A pyrolysis treatment device for soil pollution according to claim 1, characterized in that: The liquid collection section (5) gradually reduces in diameter from bottom to top. The lower end of the liquid collection section (5) is smoothly transitioned with the pyrolysis tank (1), and the upper end of the liquid collection section (5) is smoothly transitioned with the exhaust gas discharge pipe (6).
6. The pyrolysis treatment device for soil pollution according to claim 1, wherein: The number of the spiral agitators (3) is several. The heating rods (4) are arranged in the middle of the pyrolysis tank (1), and several spiral agitators (3) are arranged around the heating rods (4).
7. A pyrolysis treatment device for soil pollution according to claim 1, characterized in that: The spiral agitator (3) is externally connected to the positive pole of the power supply, and an anode material is coated on the spiral agitator (3).
8. The pyrolysis treatment device for soil pollution according to claim 7, characterized in that: The anode material is one of ruthenium oxide or iridium oxide layer made of titanium-based material, boron-doped diamond, lead dioxide, SnO2, and Ti / SnO2.
9. The pyrolysis treatment device for soil pollution according to claim 1, wherein: The exhaust gas discharge pipe (6) has a downward bending section (61), and the end of the downward bending section (61) is connected to a closing section (62).
10. A pyrolysis treatment device for soil pollution according to claim 9, characterized in that: A waste gas condensate collector (63) is connected to the bottom of the downward bending section (61).