Oil And Moisture Filter Apparatus In Exhaust Gases

Abstract

An invention is disclosed for an air, oil, and moisture filtration device for exhaust gas from drying food waste. The disclosed air, oil, and moisture filtration device for exhaust gas from drying food waste efficiently removes oily foreign substances that are likely to adhere to the heat exchanger pipes by means of a multi-filtration device installed in the high-temperature exhaust gas transfer pipeline generated during the food waste drying process. This enables economical management without massive losses caused by clogging of conventional heat exchangers, while also allowing for economical maintenance of the multi-filtration device through repeated use via cleaning.

Description

Technology Field

[0001] The present invention relates to an air-oil filtration device for exhaust gas from drying food waste, and more specifically, to an air-oil filtration device for exhaust gas from drying food waste that enables economical maintenance of the heat exchanger and easy and convenient maintenance of the filtration device by efficiently removing foreign substances such as air-oil and moisture from the high-temperature exhaust gas generated during the food waste drying process transferred to the heat exchanger in advance through a multi-layer filtration device installed in the heat exchanger transfer pipeline. Background Technology

[0002] High-temperature gas generated during the drying process, in particular, in the process of converting discarded food waste into animal feed for recycling, is sent to a heat exchanger for the use of thermal energy (refer to 'Food waste treatment device with total exhaust gas circulation' in Patent Document 1).

[0003] However, high-temperature exhaust gas contains a large amount of oil and moisture due to the characteristics of various food wastes, so whenever it passes through the tubes of the heat exchanger, the oil and moisture contained in the exhaust gas become fixed inside the tubes of the heat exchanger, causing a problem that significantly reduces the heat exchange efficiency of the heat exchanger.

[0004] Furthermore, if this phenomenon occurs repeatedly, the oil continuously adhering to the heat exchanger pipes becomes a cause for blockage, resulting in the need to maintain the heat exchanger itself.

[0005] There is also the problem that interrupting the operation of a food waste treatment device during operation due to maintenance, such as cleaning heat exchangers, results in enormous economic losses.

[0006] 'Patent Document 2' indicated below is 'Method and apparatus for removing oil containing metal waste using a quantum energy generator', and 'Patent Document 3' is 'Purification device for smoke containing odor and oil'.

[0007] Therefore, there is an urgent need to develop a filtration device that can efficiently and economically treat the oil and moisture contained in exhaust gases generated during the drying process of food waste from households or restaurants. Prior art literature

[0008] KR Publication No. 10-2006-0000841 KR Publication No. 10-2017-0115178 KR Publication No. 10-2021-0103053 The problem to be solved

[0009] The present invention was developed through research results to solve the problems of the aforementioned conventional technology. The objective of the present invention is to provide an air, oil, and moisture filtration device for food waste drying exhaust gas that enables economical maintenance of the heat exchanger by efficiently pre-removing oily foreign substances that are likely to adhere to the heat exchanger's pipeline using a multi-filtration device installed in the pipeline for transporting high-temperature exhaust gas generated during the food waste drying process.

[0010] Furthermore, the present invention provides an air-oil and moisture filtration device for food waste drying exhaust gas, which allows for easy and convenient maintenance, such as cleaning due to contamination of the filtration device. means of solving the problem

[0011] The above objective is achieved by the air-oil filtration device for food waste drying exhaust gas provided according to the present invention.

[0012] An air-oil filtration device for exhaust gas from drying food waste provided according to one aspect of the present invention comprises: a filter body having a predetermined diameter, wherein the opening is closed so as to be opened by a cover plate, and the opening is closed so as to be opened by a cover plate; and a multi-filtration unit comprising a plurality of filter bodies arranged separably stacked at regular intervals along the interior of the filter body to form a multi-filtration structure, a mesh filter body having a diameter corresponding to the inner diameter of the filter body and separably disposed on an upper stopper of the internal space to primarily filter oily foreign substances in the conveyed exhaust gas, a waved filter plate assembly having a diameter corresponding to the mesh filter body and separably disposed on an intermediate stopper of the internal space to contact the exhaust gas passing through the mesh filter body with waved adsorption surfaces to increase the adsorption efficiency of oily foreign substances, and a scouring pad filter body having a diameter corresponding to the waved filter plate assembly and separably disposed on a lower stopper to finally filter and separate the remaining oil in the exhaust gas passing through the mesh filter body and the waved filter plate assembly, wherein oil in the high-temperature exhaust gas while passing through each filter body of the multi-filtration unit By pre-filtering and separating foreign substances through the above-mentioned multi-filter section and then discharging them to the heat exchanger side, the blockage of the pipes in the heat exchanger caused by the adhesion of oil in the exhaust gas is prevented.The above-described waved filter plate assembly is characterized by comprising: a cylindrical housing formed to have a predetermined diameter with a structure in which the upper and lower ends are completely open; and a plurality of waved filter plates having a length corresponding to the height of the cylindrical housing, positioned longitudinally inside the cylindrical housing, and densely arranged to maintain a porosity that does not provide resistance to the passage of high-temperature exhaust gas, thereby providing numerous wave surfaces for adsorbing oil in the exhaust gas.

[0013] delete

[0014] delete Effects of the invention

[0015] According to the following embodiment of the present invention, by efficiently filtration foreign substances, such as oil and moisture contained in the high-temperature exhaust gas generated during the drying process of a food waste treatment device, before transferring them to the heat exchanger, the effect of preventing economic loss caused by the interruption of heat exchanger operation due to the adhesion of foreign substances to the heat exchanger is achieved.

[0016] In addition, the present invention provides the effect of enabling economical maintenance through repeated use by washing the filtration device when it becomes contaminated. Brief explanation of the drawing

[0017] FIG. 1 is a longitudinal cross-sectional view of an air-oil and moisture filtration device for food waste drying exhaust gas according to the present invention, FIG. 2 is a drawing showing only the wave-shaped plate assembly filter (135) in FIG. 1 separated and partially separated, FIG. 3 is a drawing showing FIG. 2 viewed from above. Specific details for implementing the invention

[0018] Hereinafter, a preferred embodiment of the air-oil filtration device for food waste drying exhaust gas according to the present invention will be described in detail with reference to the attached drawings.

[0019] Prior to the description of the present invention, the following specific structural or functional descriptions are provided merely for the purpose of illustrating embodiments according to the concept of the present invention. Embodiments according to the concept of the present invention may be implemented in various forms and should not be interpreted as being limited to the embodiments described herein.

[0020] In addition, since embodiments according to the concept of the present invention may be subject to various modifications and may take various forms, specific embodiments are illustrated in the drawings and described in detail in this specification. However, this is not intended to limit the embodiments according to the concept of the present invention to specific disclosed forms, and it should be understood that they include all modifications, equivalents, and substitutions that fall within the spirit and scope of the present invention.

[0021] In addition, the configurations of the present invention are interpreted to include not only direct contact or connection but also contact or connection between configurations through other configurations within the same scope.

[0022] FIG. 1 is a longitudinal cross-sectional view of an air-oil filtration device for food waste drying exhaust gas according to the present invention.

[0023] As shown in the drawing, the air, oil, and moisture filtration device (100) for food waste drying exhaust gas according to the present invention comprises: a cylindrical filter body (110) having a predetermined diameter, which provides an internal space (111) with only the upper part open and upper and lower connecting ports (112, 113) formed on either side to communicate with the internal space (111) for hermetically connecting to a transfer pipe (10) that transfers high-temperature exhaust gas generated during the food waste drying process to a heat exchanger (30), and the opening portion closed so as to be opened by a cover plate (114); and a multi-filtration unit (130) which forms a multi-filtration structure by separably stacking multiple filter bodies at regular intervals along the interior of the filter body (110), wherein foreign substances such as oil in the high-temperature exhaust gas are filtered by the multi-filtration unit (130) while passing through each filter body of the multi-filtration unit (130). By separating them, the phenomenon of blockage of the tube caused by the adhesion of oil contained in the exhaust gas is eliminated during the process in which the high-temperature exhaust gas passes through the tube (TUBE) of the heat exchanger (30).

[0024] As shown in the drawing, the cover plate (114) is fastened to the filter body (110) with fastening bolts (not shown) so that it can be easily opened for cleaning the interior of the filter body (110) and the multiple filter section (130) or for replacing the multiple filter section (130).

[0025] In addition, it is preferable that the filter body (110) including the cover plate (114) be made of an STS steel grade having acid resistance, heat resistance, oxidation resistance, and strength to withstand physical impact, in order to prevent corrosion caused by contact with the high heat of the exhaust gas generated during the food waste drying process or various chemical components contained in the gas, and it can be fully understood that the size of the filter body (110) can be modified as much as needed depending on the volume of exhaust gas generated during the food waste drying process.

[0026] In the above filter body (110), the unexplained reference numeral 115 is a drain valve for releasing oil or water that accumulates inside during the filtration process to the outside, and 116 is a support angle for stable support at the bottom.

[0027] As shown in the drawing, the multi-filtration unit (130) includes a mesh filter body (131), a wave-shaped filter plate assembly (133), and a scouring pad filter body (135) arranged in a stacked state at regular intervals from the top to the bottom of the filter body (110).

[0028] The above mesh filter body (131), wave filter plate assembly (133), and scouring pad filter body (135) are formed to have a diameter corresponding to the inner diameter of the filter body (110) and are positioned so as to be caught on bracket-shaped hooks (117, 118, 119) respectively provided on the inner wall of the internal space (111), thereby allowing them to be easily separated for cleaning or replacement in case of contamination or damage due to long-term use.

[0029] The above mesh filter (131) can be composed of any one of a crimp screen, a double crimp screen, and a ton-cap screen, and it is preferable that the size of each mesh of the above mesh filter (131) be such that it can efficiently filter foreign substances without placing a load on the passage of exhaust gas. The above mesh filter (131) is also composed of a metal having corrosion resistance, oxidation resistance, and heat resistance.

[0030] The above-mentioned wave filter plate assembly (133) will be described with reference to FIG. 2 and FIG. 3. FIG. 2 is a drawing showing only the wave filter plate assembly (133) separated from FIG. 1 and partially separated, and FIG. 3 is a drawing showing FIG. 2 viewed from above.

[0031] As shown in the drawing, the waved filter plate assembly (133) comprises a cylindrical housing (133-1) formed with a predetermined diameter having a structure in which the upper and lower ends are completely open, and a plurality of waved filter plates (133-2) having a length corresponding to the height of the cylindrical housing (133-1) and arranged longitudinally inside the cylindrical housing (133-1) while maintaining a porosity that does not provide resistance to the passage of high-temperature exhaust gas, thereby providing numerous wave surfaces (133-3) for adsorbing oil in the exhaust gas. The waved filter plates (133-2) provide a high adsorption area per unit area within the cylindrical housing (135-1) through the numerous wave surfaces (133-3) provided for adsorbing oil, thereby becoming a major factor in increasing the oil adsorption efficiency. It will be fully understood that the size of the above-mentioned waved filter plate assembly (135) can also be configured to be larger or smaller in response to the amount of exhaust gas passing through. The above-mentioned waved filter plate assembly (133) is also composed of a metal having the same corrosion resistance, oxidation resistance, and heat resistance as the above-mentioned mesh filter (131).

[0032] As shown in the drawing, the scouring pad filter (135) is composed of metal (iron) scrap in an irregularly intertwined form, and this scouring pad filter (135) also has corrosion resistance, oxidation resistance, and heat resistance, similar to the wave filter plate assembly (133) and the mesh filter (131) due to its metal material.

[0033] An example of the operation of the oil filtration device for food waste drying exhaust gas according to the present invention, having the configuration as described above, will be explained again with reference to FIGS. 1 to 3.

[0034] In the process of transferring high-temperature exhaust gas generated during the food waste drying process to a conventional heat exchanger (30) through a transfer pipe (10), the oil is filtered and separated as it passes sequentially through a mesh filter body (131) → a wave-shaped plate assembly (Demister) (133) → a scouring pad filter body (135) that provides a multi-filtration section (130) of a filter body (110) that is hermetically connected to the transfer pipe (10). Here, oil refers to oil components such as oil vapor, oil mist, and mist.

[0035] The high-temperature exhaust gas of food waste introduced through the upper connector (112), which is the inlet of the filter body (110), first comes into contact with several mesh sections passing through the mesh filter body (131), thereby filtering out the oil in the exhaust gas and performing the function of primarily separating the oil from the exhaust gas.

[0036] The high-temperature exhaust gas that has passed through the above-mentioned mesh filter body (131) passes through the above-mentioned waved filter plate assembly (133). During this passage process, the exhaust gas is given the effect of increasing the adsorption area by the wave surfaces (133-3) for oil adsorption provided in countless numbers by the waved filter plates (133-2) of the above-mentioned waved filter plate assembly (133). The increase in the adsorption area becomes a factor that increases the adsorption rate of residual oil in the exhaust gas that was not separated by the above-mentioned mesh filter body (131) by the waved filter plate waved adsorption surfaces (133-3), thereby maximizing the filtration efficiency for oil foreign substances in the exhaust gas and enabling the oil in the exhaust gas to be completely separated.

[0037] The exhaust gas that has passed through the above-mentioned waved plate assembly (133) is finally passed through the above-mentioned scouring pad filter (135) to perform a final filtration action that separates any remaining oil that may be left in the exhaust gas.

[0038] The exhaust gas, which has been completely separated from oil by passing through the above-mentioned scouring pad filter (135), is transferred to the heat exchanger (30) through the discharge port (113) on the lower side of the filter body (110), thereby preventing blockage of the pipes caused by oil adhesion in the heat exchanger and enabling economical maintenance of the heat exchanger. Industrial applicability

[0039] According to the present invention, the benefit of enabling the economical management of a heat exchanger is provided by efficiently filtration treatment of oil and moisture impurities in the high-temperature exhaust gas generated during the food waste drying process before transferring them to the heat exchanger. Explanation of the symbols

[0040] 30: Heat exchanger 100: Air-oil filtration device for food waste drying exhaust gas 110: Filter body 130: Multi-filtration section 131: Mesh filter 133: Wavy filter plate assembly 135: Scouring pad filter

Claims

Claim 1 A filter body having a predetermined diameter that provides an internal space with only the top open, upper and lower connecting ports formed on either side to hermetically connect the internal space with a transfer pipe that transfers high-temperature exhaust gas generated during the food waste drying process to a heat exchanger, and the opening is closed so that it can be opened with a cover plate; A multi-filtration unit comprising: a mesh filter body that forms a diameter corresponding to the inner diameter of the filter body and is detachably disposed on an upper stopper of the internal space to primarily filter oily foreign substances in the conveyed exhaust gas, wherein a plurality of filter bodies are detachably stacked at regular intervals along the interior of the filter body to form a multi-filtration structure; a wave filter plate assembly that forms a diameter corresponding to the mesh filter body and is detachably disposed on an intermediate stopper of the internal space to contact the exhaust gas passing through the mesh filter body with wave-shaped adsorption surfaces to increase the adsorption efficiency of oily foreign substances; and a scouring pad filter body that forms a diameter corresponding to the wave filter plate assembly and is detachably disposed on a lower stopper to finally filter and separate the residual oil in the exhaust gas passing through the mesh filter body and the wave filter plate assembly. A device for filtering air, oil, and moisture from food waste drying exhaust gas, wherein oily foreign substances in the high-temperature exhaust gas are pre-filtered and separated by the multi-filtration unit while passing through each filter body of the multi-filtration unit, and then discharged to the heat exchanger side, thereby preventing pipe blockage in the heat exchanger caused by the adhesion of oil in the exhaust gas. Claim 2 delete Claim 3 The air-oil and moisture filtration device for food waste drying exhaust gas according to claim 1, wherein the wave-shaped filter plate assembly comprises: a cylindrical housing formed to have a predetermined diameter with a structure in which the upper and lower ends are completely open; and a plurality of wave-shaped filter plates having a length corresponding to the height of the cylindrical housing, positioned longitudinally inside the cylindrical housing, and arranged densely while maintaining a porosity that does not provide resistance to the passage of high-temperature exhaust gas, thereby providing numerous wave surfaces for adsorbing air-oil in the exhaust gas.

Images