A device for treating the blow-off waste gas of a soybean refined oil filter press

Abstract

The utility model relates to waste steam treatment technical field, propose a kind of device for processing soybean refined oil filter cake blowing waste steam of machine, including waste steam pipe, cooling device, connecting pipe and trap, wherein, the waste steam pipe is fixedly connected on the cooling device;The cooling device includes shell, steam inlet end, steam outlet end and cooling coil, the steam inlet end and the steam outlet end are fixedly arranged in one end of shell, and the steam outlet end is located below the steam inlet end;The cooling coil is arranged in the shell;The utility model passes through cooling device with waste steam pipe connection, high-temperature waste steam is directly passed through waste steam pipe and enters cooling device and is cooled, condensation occurs in steam cooling process, and then change into liquid water, greatly reduce the waste steam content of emission, and cooling device is connected with trap again through connecting pipe, and waste steam after cooling is sprayed and captured again, improve processing effect, further reduce waste steam peculiar smell.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment technology, and in particular to a device for treating waste gas from a soybean refining oil filter cake blowing machine. Background Technology

[0002] In the refining process of soybean oil, the decolorization step is one of the key steps to ensure the quality of the finished oil. This step usually involves adding bleaching clay to the crude oil, utilizing its strong adsorption capacity to remove pigments, residual soap, metal ions, and other trace impurities from the oil, thereby significantly improving the color and stability of the oil. After the decolorization reaction is completed, a filter is used to separate the saturated bleaching clay (commonly known as "filter cake") from the soybean oil to obtain decolorized clear oil.

[0003] To ensure continuous and stable operation of the filter, the filter cake remaining in the filter plates and filter chambers must be removed after each batch of filtration. Currently, the industry commonly uses steam purging (i.e., "cake blowing") for cleaning. This method utilizes high-temperature, high-pressure steam to impact the filter cake, loosening it and causing it to detach from the filter cloth surface. It has the advantages of simple operation and high cleaning efficiency. However, during steam purging, the high-temperature steam carries a large amount of volatile organic compounds, fine oil mist, and decolorizing clay particles, forming exhaust gas with a distinctive mixed odor.

[0004] Currently, most companies still use a simple water spraying method for preliminary purification of such blown cake exhaust gas. However, direct spraying significantly increases the humidity of the exhaust gas, which easily forms aerosols and causes secondary pollution. Moreover, the exhaust gas treated by water spraying still contains a high concentration of odorous substances. Direct discharge into the workshop or atmospheric environment results in significant odor in the surrounding area, affecting the occupational health and working environment of operators. Utility Model Content

[0005] In view of this, this utility model proposes a device for treating the exhaust gas from the blowing of soybean oil filter cake. It adopts a method of first cooling and then spraying and capturing, which can effectively reduce the odor of the exhaust gas and achieve long-term continuous operation, thus solving the environmental protection problems in specific industry scenarios.

[0006] The technical solution of this utility model is implemented as follows: This utility model provides a device for treating the exhaust gas from a soybean oil refining filter cake blowing machine, including an exhaust gas pipe, a cooling device, a connecting pipe, and a collector, wherein,

[0007] The waste steam pipe is fixedly connected to the cooling device;

[0008] The cooling device includes a housing, a steam inlet, a steam outlet, and a cooling coil. The housing is used to store cooling water. The steam inlet and the steam outlet are both fixedly disposed at one end of the housing, with the steam outlet located below the steam inlet. The cooling coil is disposed inside the housing, and its two ends are fixedly connected to the steam inlet and the steam outlet, respectively. The cooling water inside the housing cools the cooling coil.

[0009] One end of the connecting pipe is fixedly installed on the steam outlet end;

[0010] The trap is fixedly installed at the other end of the connecting pipe.

[0011] More preferably, the steam inlet end includes a steam inlet manifold and a steam inlet buffer cover. The steam inlet manifold is fixedly installed on the housing and is connected to the cooling coil. The steam inlet buffer cover is fixedly installed at the middle position of the steam inlet manifold and is connected to the waste steam pipe.

[0012] More preferably, the steam outlet includes a steam outlet manifold, a steam outlet buffer cover, and a drain pipe. The steam outlet manifold is fixedly mounted on the housing and is connected to the cooling coil. The steam outlet buffer cover is fixedly mounted at both ends of the steam outlet manifold and is connected to the connecting pipe. The drain pipe is fixedly mounted on the bottom side of the steam outlet buffer cover.

[0013] Based on the above technical solutions, preferably, multiple cooling coils are provided inside the housing, and the multiple cooling coils are evenly distributed along the length direction of the steam inlet manifold and the steam outlet manifold.

[0014] More preferably, the device also includes an agitation device, which includes a rotating shaft, a scraper, and a drive motor. The rotating shaft is rotatably mounted on the housing and is located above the cooling coil. The scraper is fixedly mounted on the rotating shaft. The drive motor is fixedly mounted on the housing and its output end is fixedly connected to the rotating shaft.

[0015] More preferably, the scraper includes a plate body and ribs, the plate body being fixedly disposed on the rotating shaft; the ribs being fixedly disposed between the plate body and the rotating shaft.

[0016] More preferably, the bottom of the plate is inclined.

[0017] Based on the above technical solutions, preferably, the ribs are provided in multiple locations between the plate and the rotating shaft, and the multiple ribs are evenly distributed along the length direction of the plate.

[0018] More preferably, the cooling device further includes an exhaust pipe and an observation window, the exhaust pipe being fixedly disposed on the top side of the housing and communicating with the interior of the housing; the observation window being fixedly disposed at one end of the housing.

[0019] More preferably, the trap includes a tower body, a spray pipe, and a drain pipe. The lower part of the tower body is connected to the end of the connecting pipe away from the steam outlet. The spray pipe is fixedly installed on the top side of the tower body. The drain pipe is fixedly installed on the lower part of the tower body.

[0020] The device for treating the exhaust gas from the soybean oil refining filter cake blowing process of this utility model has the following advantages over the prior art:

[0021] (1) By connecting the waste gas pipe to the cooling device, the waste gas generated during the purging process of the soybean oil refining filter can directly enter the cooling device through the waste gas pipe for cooling. During the steam cooling process, condensation occurs, and the steam is converted into liquid water, which greatly reduces the content of the emitted waste gas. The cooling device is connected to the collector through the connecting pipe, and the cooled waste gas is sprayed and collected again to improve the treatment effect and further reduce the odor of the waste gas.

[0022] (2) By setting up a stirring device, the rotating scraper pushes the cooling water in the shell back and forth, which accelerates the flow of cooling water and improves the cooling efficiency. The scraper will carry the cooling water up during rotation and splash it during the tumbling process. The cooling water is effectively cooled during the falling process, thus significantly improving the overall heat exchange efficiency.

[0023] (3) By setting up an inlet steam buffer cover on the inlet steam manifold and an outlet steam buffer cover on the outlet steam manifold, the steam can be diffused and the flow can be evenly distributed. The inlet steam buffer cover is located on both sides of the outlet steam buffer cover, which extends the path of the waste steam flow and enhances the heat exchange between the steam and the cooling medium, thereby optimizing the cooling efficiency. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a perspective view of a device for treating the exhaust gas from a soybean oil refining filter cake blowing machine according to the present invention;

[0026] Figure 2This is a perspective view of the waste gas pipe in a device for treating waste gas from a soybean oil refining filter cake blowing machine according to the present invention.

[0027] Figure 3 This is a cross-sectional view of the shell of a device for treating the blown cake exhaust gas of a soybean oil refining filter according to the present invention.

[0028] Figure 4 This is a perspective view of the steam inlet end of a device for treating waste steam from a soybean oil refining filter.

[0029] Figure 5 This is a perspective view of the cooling coil in a device for treating waste gas from a soybean oil refining filter.

[0030] Figure 6 This is a perspective view of the scraper section in a device for treating waste gas from a soybean oil refining filter.

[0031] The components are as follows: 1. Waste steam pipe; 2. Cooling device; 21. Shell; 22. Steam inlet end; 221. Steam inlet manifold; 222. Steam inlet buffer cover; 23. Steam outlet end; 231. Steam outlet manifold; 232. Steam outlet buffer cover; 233. Drain pipe; 24. Cooling coil; 25. Agitator; 251. Rotating shaft; 252. Scraper; 2521. Plate; 2522. Rib; 253. Drive motor; 26. Exhaust pipe; 27. Observation window; 3. Connecting pipe; 4. Collector; 41. Tower body; 42. Spray pipe; 43. Drain pipe. Detailed Implementation

[0032] The technical solutions of this utility model will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0033] like Figure 1-6 As shown, the present invention provides a device for treating the waste gas from the blowing of soybean oil filter, comprising a waste gas pipe 1, a cooling device 2, a connecting pipe 3, and a collector 4.

[0034] Among them, the waste steam pipe 1 is used to discharge the high-temperature waste steam in the soybean oil refining filter. The waste steam pipe 1 is fixedly connected to the cooling device 2, and the high-temperature waste steam is discharged into the cooling device 2 through the waste steam pipe 1.

[0035] Cooling device 2 is used to cool exhaust gas. Cooling device 2 includes a shell 21, a steam inlet end 22, a steam outlet end 23, a cooling coil 24, a stirring device 25, an exhaust pipe 26, and an observation window 27. The shell 21 is used to store cooling water. The steam inlet end 22 and the steam outlet end 23 are both fixedly installed at the same end of the shell 21, and the steam outlet end 23 is located below the steam inlet end 22. The steam inlet end 22 includes a steam inlet manifold 221 and a steam inlet buffer cover 222. The steam inlet manifold 221 is fixedly installed on the shell 21. The steam inlet buffer cover 222 is fixedly installed in the middle of the steam inlet manifold 221 and is connected to the exhaust gas pipe 1. High-temperature exhaust gas flows into the steam inlet manifold 221 through the steam inlet buffer cover 222. The steam outlet end 23 includes a steam outlet manifold 231 and a steam outlet... A buffer cover 232 and a drain pipe 233 are fixedly installed on the housing 21. The steam outlet manifold 231 is fixedly installed at both ends of the steam outlet manifold 231. The cooling coil 24 is installed inside the housing 21, and both ends of the cooling coil 24 are connected to the steam inlet manifold 221 of the steam inlet end 22 and the steam outlet manifold 231 of the steam outlet end 23, respectively. High-temperature waste steam flows into the cooling coil 24 from the steam inlet manifold 221. The coil is immersed in the cooling water of the housing 21. The waste steam exchanges heat with the cooling water through the pipe wall to achieve efficient cooling. Finally, it flows into the steam outlet manifold 231 and is discharged. The drain pipe 233 is fixedly installed on the bottom side of the steam outlet buffer cover 232. The high-temperature waste steam condenses during the cooling process and turns into liquid water, which is discharged through the drain pipe 233.

[0036] like Figure 4 As shown, the side views of both the steam inlet buffer shroud 222 and the steam outlet buffer shroud 232 are trapezoidal, which diffuses and equalizes the steam flow. In addition, multiple cooling coils 24 are provided inside the housing 21, and these multiple cooling coils 24 are evenly distributed along the length of the steam inlet manifold 221 and the steam outlet manifold 231, which increases the heat exchange area and improves the heat exchange efficiency. Moreover, this distribution method extends the path of the exhaust steam flow, enhances the heat exchange between the steam and the cooling medium, and thus optimizes the cooling efficiency.

[0037] The agitator 25 promotes the flow of cooling water within the housing 21 to prevent localized overheating and enhance its heat exchange efficiency with the cooling coil 24. The agitator 25 includes a rotating shaft 251, a scraper 252, and a drive motor 253. The rotating shaft 251 is rotatably mounted on the housing 21 and positioned above the cooling coil 24. The scraper 252 is fixedly mounted on the rotating shaft 251. The drive motor 253 is fixedly mounted on the housing 21, and its output end is fixedly connected to the rotating shaft 251. The drive motor 253 drives the rotating shaft 251 to rotate, thereby rotating the scraper 252. The scraper 252 includes a plate body 2521 and ribs 2522. The plate body 2521 is fixedly mounted on the rotating shaft 251, and its bottom is inclined. When it rotates with the rotating shaft 251, it can effectively stir and lift the cooling water at the bottom, thereby breaking the temperature stratification and achieving uniform mixing of the water. To enhance the overall structural stability of the scraper 252, multiple ribs 2522 are provided between the plate body 2521 and the rotating shaft 251. These ribs 2522 are evenly distributed along the length of the plate body 2521, which not only significantly improves the rigidity of the scraper 252, but also plays a role in lateral sealing, effectively reducing the leakage of cooling water from both ends of the plate body 2521 during the scraping process, ensuring stirring efficiency. Furthermore, the scraper 252 will splash the cooling water during the flipping process. As the cooling water falls, it will break the surface tension of the water, promote evaporation and heat dissipation, and exchange heat with the air to a certain extent, thereby synergistically improving the overall heat exchange efficiency.

[0038] The exhaust pipe 26 is fixedly installed on the top side of the housing 21 and is connected to the interior of the housing 21. It is used to discharge the gas of the cooling water and keep the housing 21 under normal pressure.

[0039] An observation window 27 is fixedly installed at one end of the housing 21 for direct observation of the status of the cooling water and exhaust steam of the cooling coil 24 inside the housing 21.

[0040] The connecting pipe 3 is used to connect the cooling device 2 and the collector 4. One end of the connecting pipe 3 is fixedly installed on the steam outlet buffer cover 232, and the other end of the connecting pipe 3 is connected to the collector 4. After being cooled, the high-temperature waste gas enters the collector 4 through the connecting pipe 3 for further treatment, thereby improving the treatment effect and further reducing the odor of the waste gas.

[0041] The trap 4 is used to collect residual exhaust gas after cooling. The trap 4 includes a tower body 41, a spray pipe 42, and a drain pipe 43. The lower part of the tower body 41 is connected to the end of the connecting pipe 3 away from the steam outlet 23. The spray pipe 42 is fixedly installed on the top side of the tower body 41 and continuously sprays water into the tower body 41 to spray and collect the cooled exhaust gas again. The drain pipe 43 is fixedly installed at the lower part of the tower body 41 to drain the spray water from the tower body 41.

[0042] The method of using the device for treating the exhaust gas from the soybean oil refining filter cake blowing machine according to this utility model is as follows:

[0043] This device employs a method of first cooling and then spraying for collection, which can efficiently reduce the odor of exhaust gas and enable long-term continuous operation. The high-temperature exhaust gas generated during the blowing process of the soybean oil refining filter is first discharged through exhaust gas pipe 1, which is fixedly connected to the cooling device 2, serving as the inlet channel for the exhaust gas. The high-temperature exhaust gas is directly introduced into the cooling device 2 for preliminary treatment. After entering the cooling device 2, the exhaust gas first diffuses and evenly distributes through the steam inlet buffer cover 222 at the steam inlet end 22, and then flows into the steam inlet manifold 221. The side views of the steam inlet buffer cover 222 and the steam outlet buffer cover 232 are trapezoidal, which optimizes the distribution of steam. The exhaust gas then enters the cooling coil 24, which is immersed in the cooling water of the shell 21. The exhaust gas exchanges heat with the cooling water through the pipe wall, lowering its temperature, and some of the steam condenses into liquid water. Simultaneously, the stirring device 25, driven by the drive motor 253, promotes the flow of cooling water, prevents localized overheating, and improves thermal efficiency. After cooling, the exhaust gas flows into the steam outlet manifold 231, while the condensed liquid water is discharged through the drain pipe 233 at the steam outlet 23. The exhaust pipe 26 on the top side of the shell 21 maintains the internal pressure balance, and the observation window 27 facilitates monitoring of the operating status. The cooled exhaust gas is transmitted from the steam outlet 23 of the cooling device 2 to the trap 4 through the connecting pipe 3. After the exhaust gas enters the tower body 41 of the trap 4, the spray pipe 42 on the top side continuously sprays water mist to further remove residual odor substances and particles. The purified gas is discharged, while the spray water and captured impurities are discharged through the drain pipe 43 at the bottom of the tower body 41.

[0044] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for treating exhaust steam from a soybean oil refining filter cake blowing machine, characterized in that: It includes an exhaust pipe (1), a cooling device (2), a connecting pipe (3), and a collector (4), wherein, The waste steam pipe (1) is fixedly connected to the cooling device (2); The cooling device (2) includes a housing (21), a steam inlet (22), a steam outlet (23), and a cooling coil (24). The housing (21) is used to store cooling water. The steam inlet (22) and the steam outlet (23) are both fixedly arranged at one end of the housing (21), and the steam outlet (23) is located below the steam inlet (22). The cooling coil (24) is arranged inside the housing (21), and the two ends of the cooling coil (24) are fixedly connected to the steam inlet (22) and the steam outlet (23) respectively. The cooling water in the housing (21) cools the cooling coil (24). One end of the connecting pipe (3) is fixedly installed on the steam outlet (23); The trap (4) is fixedly installed at the other end of the connecting pipe (3).

2. The apparatus for treating the blown cake exhaust gas from a soybean refining oil filter as described in claim 1, characterized in that: The steam inlet end (22) includes a steam inlet manifold (221) and a steam inlet buffer cover (222). The steam inlet manifold (221) is fixedly installed on the housing (21) and is connected to the cooling coil (24). The steam inlet buffer cover (222) is fixedly installed in the middle position of the steam inlet manifold (221) and is connected to the waste steam pipe (1).

3. The apparatus for treating the blown cake exhaust gas from a soybean refining oil filter as described in claim 2, characterized in that: The steam outlet end (23) includes a steam outlet manifold (231), a steam outlet buffer cover (232), and a drain pipe (233). The steam outlet manifold (231) is fixedly installed on the housing (21) and is connected to the cooling coil (24). The steam outlet buffer cover (232) is fixedly installed at both ends of the steam outlet manifold (231) and is connected to the connecting pipe (3). The drain pipe (233) is fixedly installed on the bottom side of the steam outlet buffer cover (232).

4. The apparatus for treating the blown cake exhaust gas from a soybean refining oil filter as described in claim 3, characterized in that: Multiple cooling coils (24) are provided inside the housing (21), and the multiple cooling coils (24) are evenly distributed along the length direction of the steam inlet manifold (221) and the steam outlet manifold (231).

5. The apparatus for treating the blown cake exhaust gas from a soybean refining oil filter as described in claim 1, characterized in that: It also includes an agitation device (25), which includes a rotating shaft (251), a scraper (252) and a drive motor (253). The rotating shaft (251) is rotatably mounted on the housing (21) and is located above the cooling coil (24). The scraper (252) is fixedly mounted on the rotating shaft (251). The drive motor (253) is fixedly mounted on the housing (21) and its output end is fixedly connected to the rotating shaft (251).

6. The apparatus for treating the blown cake exhaust gas from a soybean refining oil filter as described in claim 5, characterized in that: The scraper (252) includes a plate body (2521) and a rib (2522). The plate body (2521) is fixedly disposed on the rotating shaft (251). The rib (2522) is fixedly disposed between the plate body (2521) and the rotating shaft (251).

7. The apparatus for treating the blown cake exhaust gas from a soybean refining oil filter as described in claim 6, characterized in that: The bottom of the plate (2521) is inclined.

8. The apparatus for treating the blown cake exhaust gas from a soybean refining oil filter as described in claim 6, characterized in that: The ribs (2522) are provided in multiple locations between the plate (2521) and the rotating shaft (251), and the multiple ribs (2522) are evenly distributed along the length direction of the plate (2521).

9. The apparatus for treating the blown cake exhaust gas from a soybean refining oil filter as described in claim 1, characterized in that: The cooling device (2) also includes an exhaust pipe (26) and an observation window (27). The exhaust pipe (26) is fixedly disposed on the top side of the housing (21) and the exhaust pipe (26) is connected to the interior of the housing (21). The observation window (27) is fixedly disposed at one end of the housing (21).

10. The apparatus for treating the blown cake exhaust gas from a soybean refining oil filter as described in claim 1, characterized in that: The trap (4) includes a tower body (41), a spray pipe (42) and a drain pipe (43), and the lower part of the tower body (41) is connected to the end of the connecting pipe (3) away from the steam outlet (23); The spray pipe (42) is fixedly installed on the top side of the tower body (41); the drain pipe (43) is fixedly installed on the lower part of the tower body (41).

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