Two-stage spray condensing device for sludge treatment

Abstract

The utility model relates to condensing device technical field especially is a kind of sludge treatment two-stage spraying condensing device, including air inlet pipe, the air inlet end of air inlet pipe is transversely penetrated in the bottom end of the one side outer wall of primary condensing tower, the bottom end of primary condensing tower is vertically penetrated in the middle of the top of heat tracing heat storage tank, first spraying mechanism is equipped between the one side outer wall upper end of heat tracing heat storage tank and primary condensing tower, and the middle section of heat tracing heat storage tank is equipped with filter mechanism by first spraying mechanism close to;The middle of the top of primary condensing tower vertically penetrates one end of gas pipe, and the other end of gas pipe is transversely penetrated in the lower end of the one side of secondary condensing tower, and the bottom end of secondary condensing tower is vertically penetrated in the middle of the top of clean oil collection tank.The device can condense high-boiling point substance and wash dust by first spraying mechanism suction filtration pressurized spraying, and second spraying mechanism suction pressurized spraying can condense low-boiling point light oil, and separation effect is good, and recovery efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of condensation device technology, specifically to a two-stage spray condensation device for sludge treatment. Background Technology

[0002] Sludge treatment is the process of reducing, stabilizing, and rendering harmless the solid or semi-solid waste generated after wastewater treatment, encompassing stages such as concentration, dewatering, drying, and resource utilization. Spray condensation devices are used in thermal treatment processes to cool and condense target substances by contacting sprayed liquid with high-temperature distillate gases. They utilize the principle of liquid-gas heat exchange to achieve component separation and are commonly used for the thermal phase separation of oily wastes such as oil sludge.

[0003] During the design process of this utility model, the following problems were discovered in the existing technology:

[0004] Existing condensation devices use spray water to directly condense distillate gas to cool it down and recover oil. Dust is captured along with the distillate gas. Oil, water, and dust form scum through the agitation of the pipeline circulation pump, which is difficult to handle. Furthermore, the high-boiling-point hydrocarbons, waxes, and naphthol contained in the oil sludge solidify into wax after cooling, which is difficult to remove. Utility Model Content

[0005] The purpose of this invention is to provide a two-stage spray condensation device for sludge treatment to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a two-stage spray condensation device for sludge treatment, comprising an air inlet pipe, the air inlet end of which is transversely penetrating the bottom end of one side outer wall of a first-stage condensation tower, the bottom end of the first-stage condensation tower being vertically penetrating the middle of the top of a heat tracing and heat storage box, a first spray mechanism being provided between the upper end of one side outer wall of the heat tracing and heat storage box and the first-stage condensation tower, and a filter mechanism being provided near the middle section of the heat tracing and heat storage box of the first spray mechanism;

[0007] One end of the gas transmission pipe is vertically inserted through the middle of the top of the primary condenser, and the other end of the gas transmission pipe is horizontally inserted through the lower end of one side of the secondary condenser. The bottom of the secondary condenser is vertically inserted through the middle of the top of the clean oil collection box.

[0008] One end of the second spray mechanism is transversely penetrating the upper end of one side of the outer wall of the secondary condenser tower, and the other end of the second spray mechanism is connected to a cooling water tank.

[0009] An exhaust pipe runs vertically through the middle of the top of the secondary condenser.

[0010] The beneficial effects of this utility model are as follows: the first spraying mechanism can extract and filter the recovered oil, pressurize it, and then spray it to condense high-boiling-point substances and wash away dust to prevent scum. The filtration mechanism intercepts impurities through a fixed box and a detachable filter screen, which is convenient for maintenance. The second spraying mechanism pumps water, pressurizes it, sprays it, and condenses low-boiling-point light oil, resulting in good separation. The heat-tracing storage box can maintain a high temperature to prevent wax solidification and can also discharge sewage and oil to achieve solid-liquid separation. The clean oil collection box can export light oil, improving the efficiency and purity of oil recovery.

[0011] To achieve the goal of extracting and recovering oil from the top of the heat-traced storage tank via the first spray mechanism through the oil extraction pipe, and then pressurizing and spraying it into the first-stage condensation tower by a high-temperature centrifugal pump, the oil is used to specifically condense high-boiling-point hydrocarbons, paraffin, and other substances. At the same time, the oil washes away dust in the gas, preventing dust from mixing with water to form difficult-to-treat scum.

[0012] The first spraying mechanism is further configured as follows: the oil extraction pipe A is provided, the oil extraction end of the oil extraction pipe A is transversely penetrating the upper end of one side outer wall of the heat tracing and storage tank, the oil outlet end of the oil extraction pipe A is transversely penetrating one side of the filter mechanism, the other side of the filter mechanism is provided with an oil extraction pipe B, the outlet end of the oil extraction pipe B is connected to a high-temperature resistant centrifugal pump, the outlet end of the high-temperature resistant centrifugal pump is connected to a first conveying pipe, the outlet end of the first conveying pipe is transversely penetrating the upper end of one side outer wall of the first-stage condensing tower, and a number of first spray heads are provided at the bottom of a section of the first conveying pipe located inside the first-stage condensing tower.

[0013] By adopting the above technical solution, the first spraying mechanism draws and recovers oil from the top of the heat tracing and heat storage tank through the oil extraction pipe. After the dust is removed by the filtration mechanism, the oil is pressurized and sprayed into the first-stage condensing tower by a high-temperature centrifugal pump. This design can use the high-temperature spray liquid to specifically condense high-boiling-point hydrocarbons, paraffin and other substances, while washing the dust in the gas with oil to avoid the dust from mixing with water to form difficult-to-treat scum.

[0014] To prevent dust and impurities from entering the spray system and causing pipe blockage or affecting the working efficiency of the spray heads, the filter screen in the filtration mechanism intercepts them during the spray liquid circulation process.

[0015] The filter mechanism is further configured such that: a fixed box is provided, and oil extraction pipe A and oil extraction pipe B are respectively transversely penetrating the left and right outer walls of the fixed box; and filter screens are slidably connected to the other two inner walls of the fixed box.

[0016] By adopting the above technical solution, the filtration mechanism uses a fixed box with a detachable filter screen, which can intercept dust and impurities during the circulation of the spray liquid. When the mixed liquid flows through the fixed box, the filter screen can effectively block solid particles and prevent them from entering the spray system and causing pipe blockage or affecting the working efficiency of the spray head. At the same time, the filter screen can be manually pulled out for cleaning, which is convenient for maintenance and ensures that the spray liquid is kept clean.

[0017] To achieve secondary spraying of the gas after primary condensation using a vertical centrifugal pump and a second spray head via a second spray mechanism, and to efficiently condense the residual low-boiling-point light oil in the gas, thereby obtaining high-purity light oil and effectively separating light oil from water:

[0018] The second spraying mechanism is further configured such that: the pumping end of the pumping pipe extends laterally through the middle of the top of the cooling water tank; a vertical centrifugal pump is inserted into the outlet end of the pumping pipe; a second conveying pipe is inserted into the outlet end of the vertical centrifugal pump; the outlet end of the second conveying pipe extends laterally through the upper end of one side of the outer wall of the secondary condensing tower; and several second spray heads are provided at the bottom of a section of the second conveying pipe located inside the secondary condensing tower.

[0019] By adopting the above technical solution, the second spraying mechanism uses a vertical centrifugal pump to draw water from the cooling water tank, pressurizes the water, and sprays it out through the second spray head to spray the gas after the first stage of condensation. The low temperature water can efficiently condense the low boiling point light oil remaining in the gas. During the second stage of condensation, the water spraying is less likely to form scum, thereby obtaining high-purity light oil and achieving effective separation of light oil and water.

[0020] To prevent the high-boiling-point components in the condensed wax oil and mixture from solidifying and solidifying through a heated storage tank, ensuring its fluidity for sedimentation and filtration, and periodically removing precipitated impurities and collecting the upper layer of high-quality wax oil, solid-liquid separation and resource recovery are achieved. The light oil after secondary condensation is then collected and centrally exported via a clear oil collection system.

[0021] Further configuration: a drain channel is provided in the middle of the bottom of the heat tracing and heat storage box, a drain valve is provided on the outer wall of the drain channel, an oil drain pipe is transversely penetrating the upper part of the outer wall of one side of the heat tracing and heat storage box, an oil drain valve is provided on the outer wall of the oil drain pipe, and an oil outlet channel is provided in the middle of the bottom of the clean oil collection box.

[0022] By adopting the above technical solution, the heat tracing and storage tank maintains a high temperature through external steam, preventing the high-boiling-point components in the condensed wax oil and mixture from solidifying and ensuring its fluidity for sedimentation and filtration. The drain channel and drain valve at the bottom of the tank can periodically discharge the sedimented impurities, while the side drain pipe and drain valve are used to collect the upper high-quality wax oil, realizing solid-liquid separation and resource recovery. The oil outlet channel at the bottom of the clear oil collection tank can centrally discharge the light oil after secondary condensation, facilitating unified collection and treatment. The entire structure, through temperature control and drain and oil discharge design, avoids the problem of wax solidification and blockage, and improves the efficiency and purity of oil recovery.

[0023] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0025] Figure 2 This is a schematic diagram of the first spraying mechanism of this utility model;

[0026] Figure 3 This is a schematic diagram of the second spraying mechanism of this utility model;

[0027] Figure 4 This is a schematic diagram of the filtration mechanism of this utility model;

[0028] Figure 5 This is a schematic diagram of the control process of the electrical control equipment of this utility model.

[0029] In the diagram: 1. Inlet pipe; 2. First-stage condenser tower; 3. Heat tracing and storage tank; 301. Drainage channel; 302. Drain valve; 303. Oil drain pipe; 304. Oil drain valve; 4. First spray mechanism; 401. Oil extraction pipe A; 402. Oil extraction pipe B; 403. High-temperature centrifugal pump; 404. First delivery pipe; 405. First spray head; 5. Filtration mechanism; 501. Fixing box; 502. Filter screen; 6. Gas delivery pipe; 7. Second-stage condenser tower; 8. Clean oil collection box; 801. Oil outlet channel; 9. Second spray mechanism; 901. Water extraction pipe; 902. Vertical centrifugal pump; 903. Second delivery pipe; 904. Second spray head; 10. Cooling water tank; 11. Exhaust pipe. Detailed Implementation

[0030] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.

[0031] Please see Figures 1 to 5A two-stage spray condensation device for sludge treatment includes an air inlet pipe 1. The air inlet end of the air inlet pipe 1 is horizontally inserted through the bottom end of one side outer wall of the first-stage condensation tower 2. The bottom end of the first-stage condensation tower 2 is vertically inserted through the middle of the top of the heat tracing and heat storage box 3. A first spray mechanism 4 is provided between the upper end of one side outer wall of the heat tracing and heat storage box 3 and the first-stage condensation tower 2. A filter mechanism 5 is provided near the middle section of the first spray mechanism 4.

[0032] One end of the gas transmission pipe 6 is vertically inserted through the middle of the top of the first-stage condenser 2, and the other end of the gas transmission pipe 6 is horizontally inserted through the lower end of one side of the second-stage condenser 7. The bottom end of the second-stage condenser 7 is vertically inserted through the middle of the top of the clean oil collection box 8.

[0033] One end of the second spray mechanism 9 is transversely penetrating the upper part of the outer wall of the secondary condenser tower 7, and the other end of the second spray mechanism 9 is connected to the cooling water tank 10.

[0034] An exhaust pipe 11 runs vertically through the middle of the top of the secondary condenser tower 7.

[0035] In this embodiment, as Figure 1 and Figure 2 As shown, the first spraying mechanism 4 includes an oil extraction pipe A401. The oil extraction end of the oil extraction pipe A401 extends laterally through the upper end of the outer wall of one side of the heat tracing and heat storage tank 3. The oil outlet end of the oil extraction pipe A401 extends laterally through one side of the filter mechanism 5. An oil extraction pipe B402 extends laterally through the other side of the filter mechanism 5. A high-temperature centrifugal pump 403 is inserted into the outlet end of the oil extraction pipe B402. A first conveying pipe 404 is inserted into the outlet end of the high-temperature centrifugal pump 403. The outlet end of the first conveying pipe 404 extends laterally through the upper end of the outer wall of one side of the first-stage condensing tower 2. Several first spray heads 405 are provided at the bottom of a section of the first conveying pipe 404 located inside the first-stage condensing tower 2.

[0036] In this embodiment, as Figure 1 and Figure 4 As shown, the filter mechanism 5 includes a fixed box 501. Oil suction pipe A401 and oil suction pipe B402 are respectively transversely penetrating the outer walls of the left and right sides of the fixed box 501. Filter screen plates 502 are slidably connected to the inner walls of the other two sides of the fixed box 501.

[0037] In this embodiment, as Figure 1 and Figure 3As shown, the second spraying mechanism 9 includes a water pumping pipe 901. The water pumping end of the water pumping pipe 901 extends horizontally through the middle of the top of the cooling water tank 10. A vertical centrifugal pump 902 is inserted into the water outlet end of the water pumping pipe 901. A second conveying pipe 903 is inserted into the outlet end of the vertical centrifugal pump 902. The outlet end of the second conveying pipe 903 extends horizontally through the upper end of one side of the outer wall of the secondary condensing tower 7. Several second spray heads 904 are provided at the bottom of a section of the second conveying pipe 903 located inside the secondary condensing tower 7.

[0038] In this embodiment, as Figure 2 and Figure 3 As shown, a drain channel 301 is provided in the middle of the bottom of the heat tracing storage box 3, and a drain valve 302 is provided on the outer wall of the drain channel 301. An oil drain pipe 303 is horizontally passed through the upper middle of the outer wall of one side of the heat tracing storage box 3, and an oil drain valve 304 is provided on the outer wall of the oil drain pipe 303. An oil outlet channel 801 is provided in the middle of the bottom of the clean oil collection box 8.

[0039] The two-stage spray condensation device for sludge treatment operates as follows:

[0040] Upon initial use, the operator can first introduce the distillate gas through the inlet pipe 1 into the lower part of the first-stage condenser tower 2. At this time, the heat tracing storage tank 3 can maintain a temperature of 180-220℃ through external steam. Then, the operator can start the high-temperature centrifugal pump 403 (model: HD-30) in the first spray mechanism 4 through the external controller. At this time, the high-temperature centrifugal pump 403 will generate suction force, causing the oil extraction pipe A401 to draw and recover oil from the upper part of the heat tracing storage tank 3. During this process, the mixed oil will first flow through the filter screen plate 502 in the fixed box 501, filtering out large particles of dust and other impurities. The filtered liquid is then sent into the heat tracing storage tank 3 through the oil extraction pipe B402. The gas is pressurized by a high-temperature centrifugal pump 403 and then transported to the first spray head 405 through the first delivery pipe 404 to spray the gas from the first condenser tower 2. During this process, high-boiling-point hydrocarbons, paraffin, naphtha, etc. in the distillate gas condense at this temperature and fall down with dust through the liquid outlet at the bottom of the first condenser tower 2 into the heat tracing storage tank 3. At this time, due to gravity, the solid impurities settle in the heat tracing storage tank 3. The upper layer of wax oil is discharged through the oil drain pipe 303 and the oil drain valve 304 (model: Q41F-16P), while the impurities can be cleaned periodically through the sewage discharge channel 301 and the sewage discharge valve 302 (model: Q41PPL-16C).

[0041] After primary condensation, the gas enters the lower part of the secondary condenser 7 through the gas delivery pipe 6 at the top of the primary condenser 2. At this time, the operator can start the vertical centrifugal pump 902 (model: ISG100-160) in the second spray mechanism 9 through the external controller to generate suction force and draw cooling water from the cooling water tank 10 through the water pumping pipe 901. The vertical centrifugal pump 902 then pressurizes the water and delivers it to the second spray head 904 through the second delivery pipe 903, thereby spraying and condensing the gas inside the secondary condenser 7. During this process, the low-boiling-point light oil in the gas will fall into the clean oil collection tank 8 through the liquid outlet at the bottom of the secondary condenser 7 after condensation, and then be discharged outward through the oil outlet channel 801. The non-condensable vapor generated during this process will be discharged outward through the exhaust pipe 11. After the operation is completed, the operator needs to manually slide and pull out the filter screen 502 of the filter mechanism 5 periodically to clean it and prevent clogging.

[0042] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0043] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0044] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The above examples are only for the purpose of helping to understand the method and core ideas of this utility model. The above description is only a preferred embodiment of this utility model. It should be noted that due to the limitations of textual expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or changes can be made without departing from the principles of this utility model, and the above technical features can also be combined in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without modification, should all be considered within the protection scope of this utility model.

Claims

1. A two-stage sludge treatment spray condensing device comprising an air inlet pipe (1), characterized in that: The air inlet end of the air inlet pipe (1) is horizontally inserted through the bottom end of one side outer wall of the first-stage condenser tower (2), and the bottom end of the first-stage condenser tower (2) is vertically inserted through the middle of the top of the heat tracing storage box (3). A first spray mechanism (4) is provided between the upper end of one side outer wall of the heat tracing storage box (3) and the first-stage condenser tower (2). A filter mechanism (5) is provided near the middle section of the heat tracing storage box (3). One end of the gas transmission pipe (6) is vertically inserted through the middle of the top of the first-stage condenser (2), and the other end of the gas transmission pipe (6) is horizontally inserted through the lower end of one side of the second-stage condenser (7). The bottom end of the second-stage condenser (7) is vertically inserted through the middle of the top of the clean oil collection box (8). One end of the second spray mechanism (9) is transversely penetrating the upper end of the outer wall of the secondary condenser (7), and the other end of the second spray mechanism (9) is connected to a cooling water tank (10). An exhaust pipe (11) is vertically inserted through the middle of the top of the secondary condenser (7).

2. The two-stage spray condensation device for sludge treatment as described in claim 1, characterized in that: The first spraying mechanism (4) includes an oil extraction pipe A (401). The oil extraction end of the oil extraction pipe A (401) is transversely inserted through the upper end of the outer wall of one side of the heat tracing storage tank (3). The oil outlet end of the oil extraction pipe A (401) is transversely inserted through one side of the filter mechanism (5). The other side of the filter mechanism (5) is transversely inserted by an oil extraction pipe B (402). The outlet end of the oil extraction pipe B (402) is connected to a high-temperature centrifugal pump (403). The outlet end of the high-temperature centrifugal pump (403) is connected to a first conveying pipe (404). The outlet end of the first conveying pipe (404) is transversely inserted through the upper end of the outer wall of one side of the first-stage condensing tower (2). A number of first spray heads (405) are provided at the bottom of a section of the first conveying pipe (404) located inside the first-stage condensing tower (2).

3. The two-stage spray condensation device for sludge treatment as described in claim 2, characterized in that: The filtration mechanism (5) includes a fixed box (501), with an oil extraction pipe A (401) and an oil extraction pipe B (402) respectively passing through the outer walls of the left and right sides of the fixed box (501). Filter screens (502) are slidably connected to the inner walls of the other two sides of the fixed box (501).

4. The two-stage spray condensation device for sludge treatment as described in claim 1, characterized in that: The second spraying mechanism (9) includes a water pumping pipe (901), the water pumping end of which is transversely inserted through the middle of the top of the cooling water tank (10), the water outlet end of which is connected to a vertical centrifugal pump (902), the outlet end of which is connected to a second conveying pipe (903), the outlet end of which is transversely inserted through the upper end of one side of the outer wall of the secondary condensing tower (7), and a number of second spray heads (904) are provided at the bottom of a section of the second conveying pipe (903) located inside the secondary condensing tower (7).

5. The two-stage spray condensation device for sludge treatment as described in claim 1, characterized in that: The bottom of the heat tracing storage box (3) is provided with a drain channel (301) in the middle, and a drain valve (302) is provided on the outer wall of the drain channel (301). An oil drain pipe (303) is horizontally passed through the upper middle part of one side of the outer wall of the heat tracing storage box (3). An oil drain valve (304) is provided on the outer wall of the oil drain pipe (303). An oil outlet channel (801) is provided in the middle of the bottom of the clean oil collection box (8).

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