Oil-containing sludge recycling device

Abstract

This utility model discloses an oily sludge recycling and treatment device, including a heating furnace heated by a burner structure. The upper end of the heating furnace is connected to a water washing tower via a first pipe. The water washing tower is connected to a post-treatment structure. An oil-water separator is connected below the water washing tower, and a heat exchange box is located below the oil-water separator. The heat exchange box has a jacket on its outer wall, and the oil-water separator is connected to the jacket. There are two sets of heat exchange boxes, with the jackets of the two heat exchange boxes used to hold the aqueous phase and the oil phase, respectively. An outlet is located below the jacket. The burner structure is connected to a desulfurization tower, and a spray structure is installed inside the desulfurization tower. The spray structure is connected to a slurry tank, and the heat exchange box is also connected to the slurry tank. This utility model improves the recycling and treatment effect of oily sludge by washing the oil and water in the pyrolysis oil and gas and then recovering the waste oil. On the other hand, the heat exchange between the washed oil and water and the desulfurization slurry accelerates the cooling rate of the oil and water, improving its recycling efficiency.

Description

Technical Field

[0001] This utility model relates to the field of oily sludge treatment technology, and specifically to an oily sludge recycling and treatment device. Background Technology

[0002] There are many methods for treating oily sludge, including landfill, biological treatment, thermal washing, and incineration. However, each of these methods has its limitations. The most common method currently is thermal desorption, which involves heating and pyrolyzing the oily sludge, washing the resulting pyrolysis gas to obtain oil and water, deacidifying the sludge, and then recovering and burning the non-condensable gas. In this method, the oil and water obtained from washing are directly left to stand for recycling, without much resource utilization, resulting in poor resource utilization efficiency. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of the aforementioned background technology by providing a device that can effectively utilize energy and ensure the recycling and treatment of oily sludge.

[0004] To achieve the above objectives, this utility model provides an oily sludge recycling and treatment device, which adopts the following technical solution:

[0005] An oily sludge recycling and treatment device includes a heating furnace heated by a burner structure. The upper end of the heating furnace is connected to a water washing tower via a first pipe. The water washing tower is followed by a treatment structure. An oil-water separator is connected below the water washing tower. A heat exchange box is located below the oil-water separator. A jacket is provided on the outer wall of the heat exchange box. The oil-water separator is connected to the jacket. There are two sets of heat exchange boxes. The jackets of the two heat exchange boxes are used to contain the aqueous phase and the oil phase, respectively. An outlet is provided below the jacket. The burner structure is connected to a desulfurization tower. A spray structure is provided inside the desulfurization tower. The spray structure is connected to a slurry tank. The heat exchange box is also connected to the slurry tank.

[0006] A further improvement of this utility model of an oily sludge recycling and treatment device is that an oil washing tower is provided between the water washing tower and the post-treatment structure.

[0007] A further improvement of this utility model of an oily sludge recycling and treatment device is that a second oil-water separator is connected below the oil washing tower, and the second oil-water separator is also connected to the interlayer of the two heat exchange boxes.

[0008] A further improvement of this utility model of an oily sludge recycling and treatment device is that the outlets of the two heat exchanger jackets are respectively returned to the spray pipes of the water washing tower and the oil washing tower.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] This invention improves the recycling and treatment effect of oily sludge by washing the oil and water in the pyrolysis oil and gas and then recovering the waste oil. On the other hand, the washed oil and water exchange heat with the desulfurization slurry, which accelerates the cooling rate of the oil and water and improves its recycling efficiency. At the same time, the waste heat is used to preheat the desulfurization slurry, which improves its effect on treating the flue gas generated by the burner. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] In the diagram: 1. Heating furnace, 2. First pipeline, 3. Water washing tower, 4. Oil-water separator, 5. Heat exchange box, 6. Jacket, 7. Burner structure, 8. Desulfurization tower, 9. Slurry tank, 10. Oil washing tower, 11. Second oil-water separator, 12. Post-treatment structure. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] like Figure 1 As shown, an oily sludge recycling and treatment device includes a heating furnace 1, which is heated by a burner structure 7. The upper end of the heating furnace 1 is connected to a water washing tower 3 via a first pipe 2. The water washing tower is connected to a post-treatment structure 12, which is an existing structure including a wet deacidification structure, a dry deacidification structure, and a dust collector, before being connected to the burner structure. An oil-water separator 4 is connected below the water washing tower, and a heat exchange box 5 is located below the oil-water separator. A jacket 6 is provided on the outer wall of the heat exchange box, and the outer wall of the heat exchange box is a heat-conducting structure. The oil-water separator is connected to the jacket. There are two sets of heat exchange boxes, and the jackets of the two heat exchange boxes are used to contain the aqueous phase and the oil phase, respectively. An outlet is provided below the jacket. The burner structure is connected to a desulfurization tower 8, and a spray structure is provided inside the desulfurization tower. The spray structure is connected to a slurry tank 9, and the heat exchange box is also connected to the slurry tank. A heater can be installed inside the slurry tank.

[0015] Furthermore, an oil washing tower 10 is also provided between the water washing tower and the post-treatment structure. The oil washing tower is connected to a second oil-water separator 11, which is also connected to the interlayer between the two heat exchange boxes.

[0016] The outlets of the two heat exchanger jackets are also returned to the spray pipes of the water washing tower and oil washing tower, respectively. Part of the cooled water and oil phases are recycled.

[0017] The working principle of this utility model is as follows: oily sludge is pyrolyzed in a heating furnace, and the pyrolysis gas is washed with water and oil to obtain an oil-water mixture. After separation, the mixture enters the jacket of the heat exchange box to exchange heat with the desulfurization slurry in the heat exchange box for cooling. The cooled oil and water phases are partially collected and partially recycled. The desulfurization slurry after heat exchange enters the slurry tank and is then used for flue gas spraying.

[0018] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An oily sludge recovery treatment device, characterized by comprising: The system includes a heating furnace heated by a burner structure. The upper end of the heating furnace is connected to a water washing tower via a first pipe. The water washing tower is connected to a post-treatment structure. An oil-water separator is connected below the water washing tower. A heat exchange box is located below the oil-water separator. A jacket is provided on the outer wall of the heat exchange box. The oil-water separator is connected to the jacket. There are two sets of heat exchange boxes. The jackets of the two heat exchange boxes are used to contain the aqueous phase and the oil phase, respectively. An outlet is provided below the jacket. The burner structure is connected to a desulfurization tower. A spray structure is provided inside the desulfurization tower. The spray structure is connected to a slurry tank. The heat exchange box is also connected to the slurry tank.

2. An oil-containing sludge recovery treatment device according to claim 1, characterized by: An oil washing tower is provided between the water washing tower and the post-treatment structure.

3. An oil-containing sludge recovery treatment device according to claim 2, characterized by: The oil washing tower is connected to a second oil-water separator below, and the second oil-water separator is also connected to the interlayer between the two heat exchange boxes.

4. The oil-containing sludge recovery treatment device according to claim 3, characterized by: The outlets of the two heat exchanger jackets also flow back to the spray pipes of the water washing tower and the oil washing tower, respectively.

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