Thermal dialysis treatment system for organic solid wastewater

Abstract

The utility model provides an organic solid wastewater thermal dialysis treatment system which comprises a hydrothermal reactor (2) used for hydrothermal reaction, the hydrothermal reactor (2) is provided with a hollow cavity, the top of the hydrothermal reactor (2) is provided with a feed port (1), and the bottom of the hydrothermal reactor (2) is in fluid connection with a solid-liquid separator (4) used for solid-liquid separation through a sealing valve (3); the bottom of the solid-liquid separator (4) is in fluid connection with an array dialysis tube (5) for dialysis; a slurry discharge hole (6) is formed in the side surface of the bottom of the array dialysis tube (5), and an opening is formed right below the array dialysis tube (5). According to the device disclosed by the utility model, the high-water-content organic solid waste can be subjected to hydrothermal treatment only at lower temperature and lower pressure, dialysis treatment is added after the hydrothermal treatment, high-value products are fully and effectively extracted, the requirements on equipment materials and technologies are low, the construction cost is relatively low, and the safety is high.

Description

Technical Field

[0001] This utility model relates to a hydrothermal dialysis treatment system, and more particularly to a hydrothermal dialysis treatment system for organic solid waste. Background Technology

[0002] This section provides only background information relevant to this disclosure and is not necessarily prior art.

[0003] Human production and daily life consume resources and generate a large amount of organic solid waste. Organic solid waste refers to waste containing organic matter, which is produced in huge quantities and comes in a wide variety of types. Among them, high-moisture organic solid waste includes floating debris from the Yangtze River, kitchen waste, and sewage sludge. In recent years, thermal treatment processes have shown advantages in treating high-moisture organic solid waste, such as less pollution and a relatively high degree of resource utilization. However, these processes also bring about higher energy consumption and lower product value.

[0004] Currently, most hydrothermal treatment devices only use hydrothermal reactors to treat high-moisture organic solid waste independently, aiming only at the low requirements of "reduction and harmlessness," and treating the products as low-value products such as fertilizer and biochar. The hydrothermal products are not fully and sustainably utilized, resulting in a serious waste of resources.

[0005] In order to treat high-moisture organic solid waste as resource-efficiently as possible, some existing hydrothermal equipment uses a high-temperature and high-pressure environment for hydrothermal reaction, which can improve the value of products and the degree of resource utilization. However, it has high technical requirements, extremely high requirements for reactor materials, short equipment service life, certain safety hazards, and high reactor construction and maintenance costs, resulting in poor economic benefits.

[0006] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0007] Purpose of the invention: The technical problem to be solved by this utility model is to provide an organic solid waste hydrothermal dialysis treatment system to address the shortcomings of the existing technology.

[0008] To address the aforementioned technical problems, this utility model discloses an organic solid waste hydrothermal dialysis treatment system, comprising:

[0009] A hydrothermal reactor for hydrothermal reaction, the hydrothermal reactor having a hollow cavity with a feed inlet at the top and a solid-liquid separator at the bottom connected to the solid-liquid separator via a sealing valve; the bottom of the solid-liquid separator is connected to an array of dialysis tubes for dialysis; the array of dialysis tubes has a slurry outlet on the bottom side and an opening directly below.

[0010] Furthermore, the hydrothermal reactor has a hollow cylindrical structure, with an internal maximum temperature range of 230–280°C and a maximum pressure range of 4–6 MPa.

[0011] Furthermore, the feed inlet is cylindrical and inclined.

[0012] Furthermore, a sealing cap is detachably installed on the feed inlet.

[0013] Furthermore, the solid-liquid separator has a hollow cylindrical structure with a filter screen horizontally arranged in its middle. The filter screen is covered with micropores for solid-liquid separation.

[0014] Furthermore, the solid-liquid separator has an opening in its side wall, and the filter screen is detachably installed in the corresponding position to remove the solid material remaining on the filter screen after solid-liquid separation.

[0015] Furthermore, the array of dialysis tubes has a hollow cylindrical structure, in which several dialysis tubes are vertically distributed for dialysis to obtain carbon quantum dots.

[0016] Furthermore, a carbon quantum dot solution outlet sealing valve is provided at the opening directly below the bottom of the array dialysis tube.

[0017] Furthermore, the dialysis tube has a diameter of 5 cm.

[0018] Furthermore, the sealing valve and the carbon quantum dot solution outlet sealing valve are butterfly valves, which are horizontal when closed and rotate 90 degrees around the central axis when open.

[0019] Beneficial effects:

[0020] 1. This utility model addresses the problems of high technical requirements, extremely high requirements for reactor materials, short equipment lifespan, and safety hazards associated with conventional high-temperature and high-pressure hydrothermal treatment equipment used in order to treat high-moisture organic solid waste as efficiently as possible. It proposes a combined hydrothermal and dialysis method for treating high-moisture organic solid waste. This utility model avoids the problem of conventional high-temperature and high-pressure hydrothermal treatment equipment having to increase reaction temperature and pressure to thoroughly treat high-moisture organic solid waste. It performs hydrothermal treatment on high-moisture organic solid waste at lower temperatures and pressures, followed by dialysis to fully and effectively extract high-value products. This method has lower requirements for equipment materials and technology, relatively lower construction costs, and stronger safety.

[0021] 2. This invention addresses the problem of low resource utilization in conventional high-moisture organic solid waste treatment equipment by proposing a combined hydrothermal and dialysis method for treating such waste. This invention allows for dialysis treatment of the primary products after hydrothermal treatment, producing high-value carbon quantum dots and hydrothermal coke. This avoids the problem of most hydrothermal treatment devices only converting high-moisture organic solid waste into low-value products such as fertilizer and biochar, resulting in insufficient and unsustainable utilization of hydrothermal products and serious resource waste.

[0022] 3. This utility model addresses the problems of difficult product separation and cumbersome subsequent processing in conventional hydrothermal treatment equipment. It adopts a vertical channel + solid-liquid separator structure, allowing the hydrothermal products after the reaction to fall naturally under gravity. When passing through the solid-liquid separator, the solid hydrothermal coke is intercepted and separated, and the slurry continues to fall under gravity. This process is highly operable and has low processing difficulty. Attached Figure Description

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, and the advantages of the present invention in the above and / or other aspects will become clearer.

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0025] Figure 2 This is a cross-sectional view of the present invention.

[0026] Figure 3 This is a schematic diagram of a solid-liquid separator.

[0027] Figure 4 This is a schematic diagram of an array dialysis tube structure.

[0028] In the diagram: 1 is the feed inlet; 2 is the hydrothermal reactor; 3 is the sealing valve; 4 is the solid-liquid separator; 5 is the array dialysis tube; 6 is the slurry outlet; 7 is the carbon quantum dot solution outlet sealing valve; and 8 is the feed inlet sealing cap. Detailed Implementation

[0029] The technical solution of this utility model is as follows:

[0030] like Figure 2 As shown, an organic solid waste hydrothermal dialysis treatment system includes: a hydrothermal reactor 2 with an inlet 1 at the top, wherein the hydrothermal reactor 2 is a columnar hollow structure; a sealing cover 8 is provided on the inlet 1 to seal the inlet 1 and prevent the leakage of high-pressure gas from the hydrothermal reaction.

[0031] Among them, hydrothermal reactor 2 is a container used for hydrothermal reaction, and the parameters are designed to meet the requirements of a temperature range of 230 to 280°C and a pressure range of 4 to 6 MPa for hydrothermal reaction.

[0032] like Figure 1 As shown, the feed inlet 1 can be cylindrical and can be inclined to facilitate the entry of organic solid wastewater.

[0033] The bottom of the hydrothermal reactor 2 is fluidly connected to the top of the solid-liquid separator 4. A sealing valve 3 is provided between the hydrothermal reactor 2 and the solid-liquid separator 4. When the sealing valve 3 is closed, the internal space of the hydrothermal reactor 2 and the solid-liquid separator 4 is completely isolated.

[0034] like Figure 3 As shown, the solid-liquid separator 4 is a hollow cavity with a filter screen in the middle. The filter screen has a large number of micropores with a diameter of about 1 cm, which intercept the solid.

[0035] The filter screen in the solid-liquid separator 4 can be designed to be removable for removing the intercepted solid matter.

[0036] The bottom of the solid-liquid separator 4 is fluidly connected to the top of the array dialysis tube 5, wherein, for example... Figure 4 As shown, the array dialysis tube 5 is a hollow structure, in which several vertically placed dialysis tubes are distributed for dialysis to obtain carbon quantum dots.

[0037] The bottom side of the array dialysis tube 5 is fixed with a slurry outlet 6 for discharging the remaining liquid after dialysis.

[0038] The bottom of the array dialysis tube 5 is directly below a hollow outlet, which is equipped with a carbon quantum dot solution outlet sealing valve 7 to control the discharge of carbon quantum dots obtained by dialysis.

[0039] Example 1:

[0040] In one specific embodiment, the organic solid waste hydrothermal dialysis treatment system designed by this utility model has the following specific structure and dimensions:

[0041] The main body of the feed inlet 1 is cylindrical, with a diameter of about 0.5 meters, and is set at an angle to facilitate the entry of high-moisture organic solid waste into the hydrothermal reaction 2;

[0042] The hydrothermal reactor 2 is a hollow columnar structure with a height of 1 meter and a diameter of 2 meters, which satisfies the requirements of a hydrothermal reaction temperature range of 230 to 280°C and a pressure range of 4 to 6 MPa.

[0043] Sealing valve 3 is a butterfly valve, which is horizontal when closed and rotates 90 degrees around its central axis when open.

[0044] The solid-liquid separator 4 is a cylindrical hollow cavity with a filter screen horizontally placed in the middle. The filter screen has a large number of micropores with a diameter of about 1 cm. The solids are intercepted by gravity, and the filter screen can be pulled out to facilitate the removal of the solids deposited on it.

[0045] The array dialysis tube 5 is a hollow cylindrical structure containing a large number of dialysis tubes, which are placed vertically and the number can be adjusted as needed. The diameter is about 5 cm and the length is about 0.7 m.

[0046] The slurry outlet 6 allows the liquid obtained after passing through the array dialysis tube 5 to flow out.

[0047] The carbon quantum dot solution outlet sealing valve 7 can also be set as a butterfly valve, which is in a horizontal state when closed and rotates 90 degrees around the central axis when open.

[0048] Example 2:

[0049] In one specific embodiment, the organic solid waste hydrothermal dialysis treatment system designed in this utility model adopts the following steps during use:

[0050] Step 1: High-moisture organic solid waste enters the hydrothermal reactor 2 through inlet 1. Inlet 1 includes a sealing cover 8 to prevent the leakage of high-pressure gases from the hydrothermal reaction. After the material enters the hydrothermal reactor, the sealing cover 8 is closed; at this time, ensure that the hydrothermal reactor sealing valve 3 is closed.

[0051] Step 2: Under the low-temperature and high-pressure hydrothermal environment of hydrothermal reactor 2, the organic polymers in the high-moisture organic solid waste gradually depolymerize, generating hydrothermal coke and a slurry containing hydrocarbons. After the reaction is complete, the sealing valve 3 of the hydrothermal reactor is opened, and the hydrothermal coke and slurry fall under gravity. During the fall, the hydrothermal coke is separated by the solid-liquid separator 4, and the slurry continues to fall into the array dialysis tube 5. At this time, ensure that the sealing valve 7 of the carbon quantum dot solution outlet is closed.

[0052] Step 3: The slurry undergoes dialysis in the array dialysis tube 5. Larger carbon quantum dots cannot pass through the array dialysis tube 5, while smaller water molecules and other hydrocarbons pass through and are discharged from the slurry outlet 6. After dialysis, the carbon quantum dot solution outlet sealing valve 7 opens, allowing the carbon quantum dot solution to be discharged.

[0053] This utility model provides a concept and method for a thermal dialysis treatment system for organic solid waste. Many methods and approaches exist for implementing this technical solution; the above description is merely a preferred embodiment. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. All components not explicitly stated in this embodiment can be implemented using existing technology.

Claims

1. An organic solid waste hydrothermal dialysis treatment system, characterized in that, include: A hydrothermal reactor (2) for hydrothermal reaction, the hydrothermal reactor (2) has a hollow cavity, with a feed inlet (1) at the top and a solid-liquid separator (4) for solid-liquid separation at the bottom via a sealing valve (3); the bottom of the solid-liquid separator (4) is fluidly connected to an array dialysis tube (5) for dialysis; the bottom side of the array dialysis tube (5) is provided with a slurry outlet (6) and an opening directly below.

2. The organic solid waste hydrothermal dialysis treatment system according to claim 1, characterized in that, The hydrothermal reactor (2) has a hollow columnar structure, with a maximum internal temperature range of 230-280℃ and a maximum pressure range of 4-6MPa.

3. The organic solid waste hydrothermal dialysis treatment system according to claim 1, characterized in that, The feed inlet (1) is cylindrical and inclined.

4. The organic solid waste hydrothermal dialysis treatment system according to claim 1, characterized in that, A sealing cap (8) is detachably installed on the feed inlet (1).

5. The organic solid waste hydrothermal dialysis treatment system according to claim 1, characterized in that, The solid-liquid separator (4) has a hollow columnar structure with a filter screen horizontally arranged in the middle. The filter screen has micropores distributed on it for solid-liquid separation.

6. The organic solid waste hydrothermal dialysis treatment system according to claim 5, characterized in that, The solid-liquid separator (4) has an opening in its side wall, and the filter screen is detachably installed in the corresponding position to remove the solid material left on the filter screen after solid-liquid separation.

7. The organic solid waste hydrothermal dialysis treatment system according to claim 1, characterized in that, The array of dialysis tubes (5) is a hollow columnar structure, in which several dialysis tubes are vertically distributed for dialysis to obtain carbon quantum dots.

8. The organic solid waste hydrothermal dialysis treatment system according to claim 1, characterized in that, A carbon quantum dot solution outlet sealing valve (7) is provided at the bottom of the opening directly below the bottom of the array dialysis tube (5).

9. The organic solid waste hydrothermal dialysis treatment system according to claim 7, characterized in that, The dialysis tube has a diameter of 5 cm.

10. The organic solid waste hydrothermal dialysis treatment system according to claim 8, characterized in that, The sealing valve (3) and the carbon quantum dot solution outlet sealing valve (7) are butterfly valves, which are horizontal when closed and rotate 90 degrees around the central axis when open.

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