CN117205662A - Frying waste oil treatment system and frying waste oil treatment process - Google Patents
Frying waste oil treatment system and frying waste oil treatment process Download PDFInfo
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- CN117205662A CN117205662A CN202311148165.9A CN202311148165A CN117205662A CN 117205662 A CN117205662 A CN 117205662A CN 202311148165 A CN202311148165 A CN 202311148165A CN 117205662 A CN117205662 A CN 117205662A
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- waste oil
- oil
- frying waste
- frying
- treatment system
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- 239000002699 waste material Substances 0.000 title claims abstract description 231
- 238000000034 method Methods 0.000 title claims abstract description 28
- 230000008569 process Effects 0.000 title claims abstract description 23
- 238000010438 heat treatment Methods 0.000 claims abstract description 112
- 239000007788 liquid Substances 0.000 claims abstract description 92
- 238000004062 sedimentation Methods 0.000 claims abstract description 42
- 238000001914 filtration Methods 0.000 claims abstract description 16
- 230000008018 melting Effects 0.000 claims abstract description 10
- 238000002844 melting Methods 0.000 claims abstract description 10
- 238000010992 reflux Methods 0.000 claims description 62
- 239000010410 layer Substances 0.000 claims description 30
- 239000012535 impurity Substances 0.000 claims description 28
- 239000011229 interlayer Substances 0.000 claims description 21
- 238000011084 recovery Methods 0.000 claims description 19
- 239000002893 slag Substances 0.000 claims description 12
- 238000004891 communication Methods 0.000 claims description 11
- 230000004308 accommodation Effects 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- 238000013019 agitation Methods 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 6
- 238000011068 loading method Methods 0.000 claims description 2
- 239000010808 liquid waste Substances 0.000 claims 2
- 238000005265 energy consumption Methods 0.000 abstract description 6
- 239000004519 grease Substances 0.000 abstract description 6
- 238000001035 drying Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 278
- 230000007704 transition Effects 0.000 description 11
- 239000013049 sediment Substances 0.000 description 9
- 230000001276 controlling effect Effects 0.000 description 8
- 239000004576 sand Substances 0.000 description 6
- 230000032258 transport Effects 0.000 description 6
- 230000001105 regulatory effect Effects 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005119 centrifugation Methods 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 235000019737 Animal fat Nutrition 0.000 description 2
- 244000007853 Sarothamnus scoparius Species 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000010411 cooking Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 239000008157 edible vegetable oil Substances 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/74—Recovery of fats, fatty oils, fatty acids or other fatty substances, e.g. lanolin or waxes
Landscapes
- Frying-Pans Or Fryers (AREA)
Abstract
The invention discloses a frying waste oil treatment system and a frying waste oil treatment process, wherein the frying waste oil treatment system comprises: the drying oven is internally provided with a containing space for placing the solidified frying waste oil, and the bottom of the containing space is provided with a filter screen; a first heating assembly for heating and melting the solidified frying waste oil into liquid frying waste oil; the sedimentation tank is arranged below the oven and is used for containing liquid frying waste oil flowing in from the oven, an oil inlet is arranged at the top of the sedimentation tank, and the oil inlet is communicated with the containing space through a filtering hole on the filter screen; and the second heating component is used for heating the liquid frying waste oil to a preset sedimentation temperature so as to enable the liquid frying waste oil to be kept stand for sedimentation to form purified oil. The frying waste oil treatment system and the frying waste oil treatment process have the advantages of low energy consumption, high economy and capability of reducing the loss of frying waste oil and grease.
Description
Technical Field
The invention relates to the technical field of frying oil, in particular to a frying waste oil treatment system and a frying waste oil treatment process.
Background
The swill oil comprises frying waste oil and hogwash oil from an oil separation tank of a restaurant or restaurant sewer, wherein the frying waste oil is waste edible oil produced by catering units mainly for frying, and is fatty acid polymers with cancerogenic action after repeated high-temperature frying in a frying process of catering industry. At present, the treatment of the frying waste oil is generally contained in a waste oil treatment project, namely, the frying waste oil is poured into the waste oil treatment project through a waste oil feeding port, when the frying waste oil is in a solidification state, the waste oil is heated through a heating device of a waste oil pouring port, a small amount of impurities are removed by a impurity removing machine and a sand removing system of a waste oil system, the frying waste oil is heated and homogenized through a cooking heating tank, and the crude oil of the frying waste oil is obtained through centrifugal separation by a three-phase separator, but the treatment of the frying waste oil by the treatment mode can lead to redundant treatment links (such as impurity removal, sand removal, centrifugation and the like are needed to be carried out on the frying waste oil when the waste oil is in a solidification state), and the redundant treatment links can lead to higher oil loss of the frying waste oil, and the problems of higher cost and unnecessary energy consumption loss.
Disclosure of Invention
The invention aims to provide a frying waste oil treatment system which has the advantages of simple structure, low energy consumption, high economy and capability of reducing the loss of frying waste oil.
In order to achieve the above object, a first aspect of the present invention provides a frying waste oil treatment system comprising:
the drying oven is internally provided with a containing space for placing the solidified frying waste oil, and the bottom of the containing space is provided with a filter screen;
a first heating assembly for heating and melting the solidified frying waste oil into liquid frying waste oil;
the sedimentation tank is arranged below the oven and is used for containing liquid frying waste oil flowing in from the oven, an oil inlet is arranged at the top of the sedimentation tank, and the oil inlet is communicated with the containing space through a filtering hole on the filter screen;
and the second heating component is used for heating the liquid frying waste oil to a preset sedimentation temperature so as to enable the liquid frying waste oil to be kept stand for sedimentation to form purified oil.
In the embodiment of the invention, a reflux outlet is formed at the bottom of the settling tank, the frying waste oil treatment system further comprises a reflux assembly, the reflux assembly comprises a reflux pipe and a reflux pump, two ends of the reflux pipe are respectively connected with the reflux outlet and the reflux inlet, and the reflux pump is arranged on the reflux pipe.
In the embodiment of the invention, the bottom of the settling tank is provided with an oil outlet, the frying waste oil treatment system further comprises an oil delivery pipe and a recovery tank, the two ends of the oil delivery pipe are respectively connected with the oil outlet and the recovery tank, and the recovery tank is used for storing purified oil.
In the embodiment of the invention, the oven comprises an inner layer box body and an outer layer box body, the accommodating space is formed in the inner layer box body, an interlayer cavity is formed between the inner layer box body and the outer layer box body, the first heating component is arranged in the interlayer cavity and can heat air in the interlayer cavity, and an air outlet hole for enabling the heated air to flow out is formed in the side wall of the inner layer box body.
In the embodiment of the invention, the top wall of the inner-layer box body is provided with the air inlet, the frying waste oil treatment system further comprises a fan which is arranged in the interlayer cavity and is used for sucking air in the accommodating space into the interlayer cavity, and an air channel is formed between the air outlet end of the fan and the air outlet hole.
In an embodiment of the invention, the oven further comprises an insulating layer arranged on the outer side of the outer layer box body.
In an embodiment of the invention, the frying waste oil treatment system further comprises a steam source, and the second heating assembly comprises a steam conveying pipe, one end of the steam conveying pipe is connected with the steam source, and the other end of the steam conveying pipe extends into the liquid frying waste oil.
In an embodiment of the invention, the second heating assembly further comprises a steam heating pipe connected to the steam source, the steam heating pipe being arranged on the outer side wall of the settling tank and being capable of directly heating the side wall of the settling tank.
In an embodiment of the invention, the top of the settling tank is provided with a breather valve for balancing the internal air pressure of the settling tank with the external air pressure.
In an embodiment of the invention, the frying waste oil treatment system further comprises a plurality of oil drums for containing the solidified frying waste oil and a transport assembly for transporting the oil drums to the receiving space.
In an embodiment of the invention, the frying waste oil treatment system further comprises a first temperature detector for detecting the temperature of the liquid frying waste oil and a controller in communication with the first temperature detector, the reflux pump and configured to:
determining that the second heating assembly is in an operating state;
determining that the reflux pump is in a working state;
determining that the temperature of the liquid frying waste oil reaches a first preset temperature,
controlling the second heating assembly to stop working;
and controlling the reflux pump to stop working so as to enable the liquid frying waste oil to be kept stand for settlement for a preset time to form purified oil.
In an embodiment of the invention, the bottom of the settling tank is provided with a slag hole, and the frying waste oil treatment system further comprises a settled sundries conveying pipe for conveying settled sundries formed after settling in the accommodating cavity and a first output pump, wherein the first output pump is arranged on the settled sundries conveying pipe.
In the embodiment of the invention, the oil delivery pipe is provided with a second output pump, the first output pump and the controller are in communication connection, the reflux pump is controlled to stop working, so that the liquid frying waste oil is kept stand for settling for a preset time to form purified oil, and the method comprises the following steps:
after the reflux pump is controlled to stop working for a preset time, the first output pump is controlled to be opened so as to output settled impurities which are formed after settlement in the accommodating cavity and are positioned below the purified oil;
after the output of the settled impurities is completed, the first output pump is controlled to be closed and the second output pump is controlled to be opened so as to convey the purified oil to the recovery tank.
In an embodiment of the invention, the frying waste oil treatment system further comprises a second temperature detector disposed in the receiving space and adapted to detect a temperature of air in the receiving space, the second temperature detector, the first heating assembly and the controller being in communication, the controller being further configured to:
determining that the first heating assembly is in an operating state;
determining that the temperature of the air in the accommodating space reaches a preset temperature;
and controlling the first heating assembly to stop working.
In a second aspect, the present invention provides a waste frying oil treatment process comprising:
first heating operation: heating and melting the solidified frying waste oil into liquid frying waste oil;
and (3) filtering operation: filtering the liquid frying waste oil to form filtered liquid frying waste oil;
and a second heating operation: heating the filtered liquid frying waste oil to a preset sedimentation temperature;
sedimentation operation: standing the liquid frying waste oil with the temperature reaching the preset sedimentation temperature for sedimentation for preset time to form purified oil and sedimentary sundries which are layered up and down;
separation operation: the purified oil in the upper layer is separated to obtain purified oil.
In an embodiment of the invention, the frying waste oil treatment process further comprises a hydraulic agitation operation performed simultaneously with the second heating operation, the hydraulic agitation operation comprising:
the liquid frying waste oil after filtration is loaded in the settling tank by adopting the settling tank and the reflux component for hydraulic stirring, and the reflux component is started so that the liquid frying waste oil at the middle bottom of the settling tank is pumped out and is input again from the top of the settling tank, thereby realizing the reflux circulation of the liquid frying waste oil in the settling tank.
According to the technical scheme, the frying waste oil treatment system comprises an oven, a first heating assembly, a settling tank and a second heating assembly, wherein an accommodating space for accommodating solidified frying waste oil is formed in the oven, and a filter screen is arranged at the bottom of the accommodating space; the first heating component is used for heating and melting the solidified frying waste oil into liquid frying waste oil; the sedimentation tank is arranged below the oven and is used for containing liquid frying waste oil flowing in from the oven, an oil inlet is arranged at the top of the sedimentation tank, and the oil inlet is communicated with the containing space through a filtering hole on the filter screen; the second heating component is used for heating the liquid frying waste oil to a preset sedimentation temperature so as to enable the liquid frying waste oil to be kept stand for sedimentation to form purified oil. The frying waste oil treatment system is not provided with a sand removal system, a impurity removal system and a separator, is simpler in structure, has no redundant links such as sand removal, impurity removal and centrifugation, does not cause unnecessary energy consumption loss, is higher in economical efficiency, and also reduces grease loss of frying waste oil.
Drawings
The accompanying drawings are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain, without limitation, the embodiments of the invention. In the drawings:
FIG. 1 is a first configuration of a frying waste oil treatment system (no purified oil and no settling debris in a settling tank) according to an embodiment of the present invention;
FIG. 2 is a first configuration of a frying waste oil treatment system (settling tank with cleaned oil and settling debris) according to an embodiment of the present invention;
FIG. 3 is a second configuration of a frying waste oil treatment system according to an embodiment of the present invention;
FIG. 4 is a schematic representation of the construction of a settling tank in an embodiment of the invention;
FIG. 5 is a top view of the interior of an oven in an embodiment of the present invention;
FIG. 6 is a process flow of treating waste frying oil in an embodiment of the invention.
Description of the reference numerals
1-baking oven; 101-an inner layer box body; 102-an outer layer box body; 103-interlayer cavity; 104-an air duct; 2-a first heating assembly; 3-a settling tank; 301-oil inlet; 302-an oil outlet; 303-a slag outlet; 304-an oil return inlet; 4-a second heating assembly; 401-steam delivery pipe; 402-steam heating pipe; 5-a recovery assembly; 501-an oil delivery pipe; 6-a return pipe; 7-a fan; 8, an insulating layer; 9-a respiratory valve; 10-a transport assembly; 1001-cart track; 1002-cart; 1003-hook slide rail; 1004-a hook; 11-a second output pump; 12-a first output pump; 13-a sedimentation sundry conveying pipe; 14-a flow regulating valve; 15-purifying oil; 16-depositing sundries; 17-transition piece; 18-an oil drum; 19-a viewing window; 20-cat ladder.
Detailed Description
The following describes the detailed implementation of the embodiments of the present invention with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the invention, are not intended to limit the invention.
In one embodiment of the present invention, as shown in FIGS. 1-3, a waste frying oil treatment system comprises:
the oven 1, the inside of oven 1 forms the accommodation space used for placing the frying waste oil of the solidification state, the bottom of the accommodation space has filter screens;
a first heating assembly 2 for heating and melting the solidified frying waste oil into liquid frying waste oil;
a settling tank 3, which is arranged below the oven 1 and is used for accommodating liquid frying waste oil flowing in from the oven 1, wherein an oil inlet 301 is arranged at the top of the settling tank 3, and the oil inlet 301 is communicated with the accommodating space through a filtering hole on the filtering net;
and a second heating assembly 4 for heating the liquid frying waste oil to a preset sedimentation temperature so as to enable the liquid frying waste oil to be kept stand for sedimentation to form purified oil.
Specifically, the oil used in the frying in this embodiment has a high animal fat content, and further, the oil used in the frying has an animal fat content of 70% or more, and is in a solidified state at a low air temperature, and thus has poor flow. In the accommodating space, setting the solidified frying waste oil on the filter screen, when the frying waste oil needs to be treated, starting the first heating component 2 to heat the solidified frying waste oil, changing the solidified frying waste oil after heating and melting into liquid frying waste oil, and flowing to the oil inlet 301 at the top of the settling tank 3 through the filter holes on the filter screen; the interior of the settling tank 3 is formed with a containing cavity communicated with the oil inlet 301, and the containing cavity is used for containing liquid frying waste oil flowing in from the oil inlet 301; in the above process, the impurities with larger volume contained in the solidified frying waste oil are remained in the accommodating space through the filtration of the filter screen, and operators can use cleaning tools (such as broom, garbage hopper and the like) to clean the remained impurities. The second heating element 4 is able to heat the liquid frying waste oil in the receiving chamber further until it is heated to a preset sedimentation temperature, which in this embodiment is preferably 90 c, in the range 75-95 c. Due to the higher preset sedimentation temperature, the viscosity of the frying waste oil at the temperature is reduced, after standing for a preset sedimentation time, sedimentation impurities 16 (such as water and slag) and the purified oil 15 in the liquid frying waste oil are naturally layered, the sedimentation impurities 16 are settled to the bottom of the accommodating cavity, and the purified oil 15 is positioned above the sedimentation impurities 16.
Compared with the prior art, the frying waste oil treatment system in the embodiment is not provided with the sand removal system, the impurity removal system and the separator, has simpler structure, is not provided with redundant links such as sand removal, impurity removal, centrifugation and the like (as shown in fig. 6), does not cause unnecessary energy consumption loss, has higher economical efficiency, and also reduces the grease loss of the frying waste oil.
In one embodiment of the invention, the frying waste oil treatment system further comprises a transition piece 17 arranged between the filter screen and the settling tank 3, wherein a feed inlet communicated with the filter hole is arranged at the top of the transition piece 17, a discharge hole communicated with an oil inlet 301 of the settling tank 3 is arranged at the bottom of the transition piece 17, and melted frying waste oil flowing out of the filter hole flows into the settling tank 3 after flowing through the transition piece 17; further, the transition piece 17 is funnel-shaped (as shown in fig. 1-2) with a wide upper part and a narrow lower part, so that melted frying waste oil entering the transition piece 17 is more easily concentrated at the bottom of the transition piece 17, and then flows into the settling tank 3 from a discharge hole at the bottom of the transition piece 17. In this embodiment, the number of transition pieces 17 is not limited, and may be one or more, and when the number of transition pieces 17 is more, the number of oil inlets 301 on the settling tank 3 is correspondingly more; in addition, the transition piece 17 in the present embodiment is not limited to a funnel shape, and may be replaced by another shape (such as the shape shown in fig. 3) having a wider upper portion and a narrower lower portion.
In one embodiment of the invention, the bottom of the settling tank 3 is provided with an oil outlet 302, and the frying waste oil treatment system further comprises an oil delivery pipe 501 and a recovery tank, wherein both ends of the oil delivery pipe 501 are respectively connected with the oil outlet 302 and the recovery tank, and the recovery tank is used for storing purified oil 15. Specifically, the oil delivery pipe 501 and the recovery tank together form the reflux assembly 5, the liquid frying waste oil is kept still and settled to form the purified oil 15, the purified oil 15 in the settling tank 3 can be conveyed to the recovery tank for storage through the oil delivery pipe 501, and the purified oil 15 can be directly used for selling and cooking.
In one embodiment of the invention, the diameter of the filter holes is in the range of 8mm-15mm, which is convenient for filtering the larger volume of impurities contained in the solidified frying waste oil and can effectively reduce the grease loss.
In one embodiment of the invention, the bottom of the settling tank 3 is provided with a reflux outlet, the top of the settling tank 3 is provided with a reflux inlet 304, the frying waste oil treatment system further comprises a reflux assembly comprising a reflux pipe 6 and a reflux pump, both ends of the reflux pipe 6 are respectively connected with the reflux outlet and the reflux inlet 304, and the reflux pump is arranged on the reflux pipe 6. Specifically, after the reflux pump is started, the liquid frying waste oil at the middle bottom of the settling tank 3 can be pumped out, the liquid frying waste oil flowing out from the reflux outlet flows into the settling tank 3 from the reflux inlet 304 after flowing through the reflux pipe 6, so that the reflux circulation of the liquid frying waste oil is realized, the high-speed liquid frying waste oil flows in from the top of the settling tank 3 to form large impact, the hydraulic stirring function is realized, the heating efficiency of the liquid frying waste oil can be improved, the space height is also saved, the upper and lower stacking arrangement of the oven 1 and the settling tank 3 is facilitated, and the liquid frying waste oil automatically flows into the settling tank 3.
In one embodiment of the present invention, as shown in fig. 4, the return pipe 6 is further provided with a flow regulating valve 14 for regulating the flow of the liquid frying waste oil, and the flow regulating valve 14 is regulated according to the actual requirement, so that the effect of hydraulic stirring can be further improved. Further, the frying waste oil treatment system in the embodiment can also eliminate the arrangement of the reflux pipe 6, the reflux pump and other parts, and replace the mechanical stirring assembly.
In one embodiment of the present invention, as shown in fig. 1-2, the oven 1 includes an inner case 101 and an outer case 102, an accommodating space is formed inside the inner case 101, an interlayer cavity 103 is formed between the inner case 101 and the outer case 102, a first heating member 2 is provided in the interlayer cavity 103 and can heat air in the interlayer cavity 103, and an air outlet hole for allowing the heated air to flow out is formed on a sidewall of the inner case 101. Specifically, the first heating assembly 2 in this embodiment includes a first steam heating tube group and a second steam heating tube group respectively disposed on the left and right sides of the interlayer cavity 103, where the first steam heating tube group and the second steam heating tube group each include a plurality of air heating tubes distributed vertically at intervals, and the frying waste oil treatment system further includes a steam source, where the air heating tubes are connected with the steam source, and the steam heating mode has advantages of low cost, high heat exchange efficiency, energy saving, and the like; the left and right sides of the inner layer box 101 are all formed with a plurality of air outlet holes, and the air in the interlayer cavity 103 is heated by the above-mentioned a plurality of air heating pipes, and the heated air enters into the accommodation space through the air outlet holes, so that the air temperature in the accommodation space rises, and then the condensed frying waste oil in the accommodation space is melted. Further, the steam heating method in this embodiment may be replaced by other heating methods such as electric heating or natural gas heating.
In one embodiment of the present invention, the top wall of the inner-layer tank 101 is provided with an air inlet, the frying waste oil treatment system further comprises a fan 7 arranged in the interlayer cavity 103 and used for sucking air in the accommodating space into the interlayer cavity 103 from the air inlet, and an air duct 104 is formed between the air outlet end and the air outlet hole of the fan 7. Specifically, the fan 7 in this embodiment is an axial flow fan, the air inlet end of the axial flow fan faces the air inlet, after the axial flow fan is started, air in the accommodating space is pumped into the interlayer cavity 103 from the air inlet, and then flows to the air outlet through the air duct 104, the air is heated by the steam heating pipe 402 in the process of flowing from the air inlet to the air outlet, and the heated air enters the accommodating space through the air outlet, namely, under the interaction of the axial flow fan, the air inlet, the air duct and the air outlet, the air in the accommodating space and the air duct (or the interlayer cavity 103) realizes thermal circulation.
In one embodiment of the present invention, oven 1 further comprises an insulating layer 8 disposed outside of outer casing 102, wherein insulating layer 8 prevents rapid loss of heat from the heated air in interlayer cavity 103.
In one embodiment of the invention, the frying waste oil treatment system further comprises a steam source, and the second heating assembly 4 comprises a steam delivery pipe 401, one end of the steam delivery pipe 401 being connected to the steam source, and the other end of the steam delivery pipe 401 extending into the liquid frying waste oil. Specifically, the other end of the steam delivery pipe 401 passes through the side wall of the settling tank 3 and extends into the liquid frying waste oil, so that steam can be directly delivered into the liquid frying waste oil, and the steam is directly sprayed into the frying waste oil and is mixed with the frying waste oil to achieve the purpose of direct heating. Further, the steam delivery pipe 401 is provided with a first switch valve, which can be opened to apply the above-mentioned heating method to the liquid frying waste oil when the operator considers that the quality of the frying waste oil is very poor.
In one embodiment of the present invention, the second heating assembly 4 further comprises a steam heating pipe 402 connected to the steam source, and the steam heating pipe 402 is disposed on the outer sidewall of the settling tank 3 and can directly heat the sidewall of the settling tank 3, wherein the steam heating pipe 402 firstly heats the sidewall of the settling tank 3, and then the sidewall of the settling tank 3 transfers heat to the liquid frying waste oil in the accommodating cavity, so as to indirectly heat the liquid frying waste oil, and the heating effect of the heating manner is more uniform. Further, the steam delivery pipe 401 of the second heating assembly 4 is provided with a second switch valve, and when the operator considers that the quality of the frying waste oil is good, the second switch valve can be opened so as to apply the heating mode to the liquid frying waste oil. In addition, the steam heating pipe 402 in the present embodiment may be disposed on the inner side wall of the settling tank 3 according to actual needs.
In one embodiment of the invention the top of the settling tank 3 is provided with a breather valve 9 for balancing the internal air pressure of the settling tank 3 with the external air pressure. When the solidified frying waste oil in the accommodating space flows into the closed settling tank 3 after being heated and melted, the liquid frying waste oil automatically flowing into the settling tank 3 can occupy the inner space (i.e. the accommodating cavity) of the settling tank 3, positive pressure appears in the settling tank 3, so that a channel between the accommodating space and the accommodating cavity is not smooth, the breather valve 9 is opened, the inner pressure of the settling tank 3 can be balanced when the liquid frying waste oil automatically flows into the settling tank 3, the inner part of the settling tank 3 is always kept at normal pressure, and the smoothness of the self-flowing of the channel between the accommodating space and the accommodating cavity of the liquid frying waste oil is ensured.
In one embodiment of the present invention, the waste frying oil treatment system further comprises a plurality of oil drums 18 for containing the solidified waste frying oil and a transport assembly 10 for transporting the oil drums 18 to the receiving space. Specifically, as shown in fig. 5, a plurality of oil barrels 18 (e.g., 20-150) can be simultaneously accommodated in the accommodating space, after an operator transports a plurality of oil barrels 18 filled with the solidified frying waste oil to the accommodating space through the transporting assembly 10, the operator reversely buckles the oil barrels 18 on the filter screen, the whole accommodating space is filled with the heated hot air heated by the first heating assembly 2, and the solidified frying waste oil in all the oil barrels 18 in the accommodating space can be simultaneously heated and melted.
In one embodiment of the present invention, the transporting assembly 10 includes a cart rail 1001 provided in the accommodating space and a cart 1002 movably provided on the cart rail 1001, the cart 1002 having an oil drum loading platform formed thereon, and an operator can first transport the oil drum 18 filled with the solidified frying waste oil to the cart 1002 and then push the cart 1002 to move along the cart rail 1001 to transport the oil drum 18 into the accommodating space; the transportation assembly 10 further comprises a lifting hook sliding rail 1003 arranged on the top wall of the inner-layer box 101, a lifting hook 1004 movably arranged on the lifting hook sliding rail 1003 and a driving piece in driving connection with the lifting hook 1004, a handle part for the lifting hook 1004 to hook is formed on the oil drum 18, an operator can hook the lifting hook 1004 on the handle part of the oil drum 18 first, then the driving piece is started, the lifting hook 1004 and the oil drum 18 move along the lifting hook sliding rail 1003 under the action of the driving piece and enter the accommodating space, the labor intensity is reduced, and the labor cost is saved due to the arrangement of the transportation assembly 10.
In one embodiment of the present invention, the frying waste oil treatment system further comprises a first temperature detector for detecting the temperature of the liquid frying waste oil and a controller in communication with the first temperature detector, the reflux pump and configured to:
determining that the second heating assembly 4 is in an operating state;
determining that the reflux pump is in a working state;
determining that the temperature of the liquid frying waste oil reaches a first preset temperature,
controlling the second heating assembly 4 to stop working;
controlling the reflux pump to stop working;
the reflux pump is controlled to stop working so that the liquid frying waste oil is kept stand still and settled for a preset time to form purified oil 15.
Specifically, the solidified frying waste oil flows into the settling tank 3 under the self weight after being melted, the liquid frying waste oil is heated under the action of the second heating component 4, in order to further improve the heating effect on the liquid frying waste oil in the above process, a reflux pump is started, so that the frying waste oil at the middle bottom of the settling tank 3 is pumped out, and the frying waste oil flowing out from a reflux outlet flows into the settling tank 3 through a reflux pipe 6 and then flows into the settling tank 3 from a reflux inlet 304; the first temperature detector is a temperature sensor arranged in the settling tank 3, when the first temperature detector detects that the temperature of the liquid frying waste oil reaches a first preset temperature, a corresponding signal is sent to the controller, the controller controls the second heating assembly 4 and the reflux pump to stop working after receiving the signal, so that the liquid frying waste oil enters a standing process, the duration of the standing process is preset time (such as 1h-10 h), and purified oil 15 is formed after standing and settling.
In one embodiment of the invention, the bottom of the settling tank 3 is provided with a slag outlet 303, and the frying waste oil treatment system further comprises a settled debris conveyance pipe 13 for conveying settled debris 16 formed after settling in the holding chamber and a first output pump 12, the first output pump 12 being arranged on the settled debris conveyance pipe 13. Specifically, the settling tank 3 includes a cylindrical column and a conical portion, the slag outlet 303 and the oil outlet 302 are both disposed on the conical portion, and the slag outlet 303 is located below the oil outlet 302, and since the density of water and the settled impurities 16 is greater than that of the purified oil 15, the water and the slag in the settled waste oil settle to the lowest portion of the settling tank 3 (i.e., inside the conical portion), and the first output pump 12 is turned on, so that the settled impurities 16 and the water formed after settling can be output through the settled impurities conveying pipe 13. Further, a swill-cooked dirty oil feeding bin can be arranged at the downstream end of the settling sundry conveying pipe 13 so as to output the settling sundry conveying pipe 13 to the swill-cooked dirty oil feeding bin through the settling sundry conveying pipe 13, and then a small amount of grease in the settling sundry 16 is further extracted in a swill-cooked dirty oil treatment system, so that grease loss is further reduced. Further, in this embodiment, the return outlet and the oil outlet 302 are integrated, the return pump and the first output pump 12 are integrated, when hydraulic stirring is required, the outlet of the first output pump 12 is connected with the return pipe 6, and the frying waste oil flowing out from the return outlet (i.e. the oil outlet 302) enters the return pipe 6 under the action of the first output pump 12 (during this process, the frying waste oil needs to pass through the settling debris conveying pipe 13 at the upstream end of the first output pump 12), and then returns to the settling tank 3 through the return inlet 304; when the settled impurities 16 are required to be output, the outlet of the first output pump 12 is connected with the settled impurities conveying pipe 13, and the settled impurities 16 flowing out of the oil outlet 302 flow into the settled impurities conveying pipe 13 and enter the swill-cooked dirty oil feeding bin under the action of the first output pump 12.
In one embodiment of the present invention, the oil delivery pipe is provided with a second output pump 11, the first output pump 12 and the controller are in communication connection, and the control of the reflux pump to stop working so as to form purified oil 15 after the liquid frying waste oil is settled for a preset time comprises:
after the reflux pump is controlled to stop working for a preset time, the first output pump 12 is controlled to be opened so as to output settled impurities 16 which are formed after settling in the accommodating cavity and are positioned below the purified oil 15;
after the completion of the output of the settled debris 16, the first output pump 12 is controlled to be turned off and the first output pump 11 is controlled to be turned on to deliver the purified oil 15 to the recovery tank.
Specifically, in order to avoid excessive sediments 16 formed after sedimentation, after the first output pump 11 is turned on, the sediments 16 are erroneously conveyed into the recovery tank, the first output pump 12 needs to be turned on after the standing process is completed (i.e. after the reflux pump stops working for a preset time), so as to output the sediments 16 first, and after the sediments 16 are output, the first output pump 11 is controlled to be turned on again, so as to convey the purified oil 15 into the recovery tank. Further, the sedimentation tank 3 is provided with a ladder 20 and a protective fence; an observation window 19 is arranged on the side wall of the settling tank 3 so as to observe the internal condition of the settling tank 3, an operator can obviously identify the boundary between the settled impurities 16 and the purified oil 15 through the observation window 19, and if the operator observes that the settled impurities 16 are conveyed completely, a control instruction can be sent to the controller through a touch screen or a remote controller so that the controller controls the first output pump 12 to be closed and the first output pump 11 to be opened so as to convey the purified oil 15 into the recovery tank; or, presetting the output time of the sedimentation sundries 16 in the controller, and controlling the first output pump 12 to be closed and controlling the first output pump 11 to be opened after the preset output time of the sedimentation sundries 16 is reached.
Further, the top of the settling tank 3 is provided with a openable top cover, so that the first output pump 11 is prevented from idling, the containing cavity is not evacuated when the purified oil 15 is pumped out through the first output pump 11 and the oil conveying pipe 501, so that the residual waste residues on the upper layer of the purified oil 15 are gradually accumulated, and an operator can open the top cover after a certain degree of accumulation, so that the operator can manually drag out the residual waste residues on the upper layer of the purified oil 15.
In one embodiment of the invention, the frying waste oil treatment system further comprises a second temperature detector arranged in the receiving space and adapted to detect the temperature of the air in the receiving space, the second temperature detector, the first heating assembly 2 and the controller being in communication, the controller being further configured to:
determining that the first heating assembly 2 is in an operating state;
determining that the temperature of the air in the accommodating space reaches a preset temperature;
the first heating assembly 2 is controlled to stop working.
Specifically, the second temperature detector continuously detects the temperature of the air in the accommodating space, if the second temperature detector detects that the temperature of the air in the accommodating space reaches the preset temperature (the preset temperature range in the embodiment is 35-45 ℃), the second temperature detector sends a corresponding signal to the controller, and the controller controls the first heating component 2 to stop working after receiving the signal, and reduces the heat loss in the oven 1 by virtue of the heat preservation layer 8, thereby being beneficial to saving energy consumption; if the first heating assembly 2 stops working, the second temperature detector detects that the temperature of the air in the accommodating space is lower than the preset temperature (for example, the temperature of the air is lower than the preset temperature by 5 ℃), the controller controls the first heating assembly 2 to be in an on-state, the purpose of automatically controlling the heating of the first heating assembly 2 can be achieved through the arrangement, and the degree of automation of the frying waste oil treatment system is improved.
In another embodiment of the present invention, there is provided a waste frying oil treatment process, as shown in fig. 6, which employs the waste frying oil treatment system of the above embodiment and includes:
first heating operation: heating and melting the solidified frying waste oil into liquid frying waste oil;
and (3) filtering operation: filtering the liquid frying waste oil to form filtered liquid frying waste oil;
and a second heating operation: heating the filtered liquid frying waste oil to a preset sedimentation temperature;
sedimentation operation: standing the liquid frying waste oil with the temperature reaching the preset sedimentation temperature for sedimentation for preset time to form purified oil and sedimentary sundries which are layered up and down;
separation operation: the purified oil in the upper layer is separated to obtain purified oil.
Specifically, in the oven 1, setting the solidified frying waste oil on the filter screen, when the frying waste oil needs to be treated, starting the first heating component 2 to heat the solidified frying waste oil, changing the solidified frying waste oil after heating and melting into liquid frying waste oil, and flowing to the oil inlet 301 at the top of the settling tank 3 through the filter holes on the filter screen; the interior of the settling tank 3 is formed with a containing cavity communicated with the oil inlet 301, and the containing cavity is used for containing liquid frying waste oil flowing in from the oil inlet 301; in the above process, the impurities with larger volume contained in the solidified frying waste oil are remained in the accommodating space through the filtration of the filter screen, and operators can use cleaning tools (such as broom, garbage hopper and the like) to clean the remained impurities. The second heating element 4 is able to heat the liquid frying waste oil in the receiving chamber further until it is heated to a preset sedimentation temperature, which in this embodiment is preferably 90 c, in the range 75-95 c. Due to the fact that the preset sedimentation temperature is high, the viscosity of frying waste oil at the temperature is reduced, after the frying waste oil is left to stand for a preset time period, sediments 16 (such as water and slag) and purified oil 15 in the liquid frying waste oil can be naturally layered, the sediments 16 are settled to the bottom of the containing cavity, the purified oil 15 is located above the sediments 16, an operator can separate the purified oil 15 from the sediments 16 through separation operation, so that the purified oil 15 is obtained independently, for example, a slag hole 303 is formed in the bottom of a sedimentation tank 3, an oil outlet 302 is formed above the slag hole 303, the sediments 16 are output through the slag hole 303, the purified oil 15 is output through the oil outlet 302, and the output purified oil 15 can be stored through a recovery tank.
In one embodiment of the invention, the frying waste oil treatment process further comprises a hydrodynamic agitation operation concurrent with the second heating operation, the hydrodynamic agitation operation comprising:
the settling tank 3 and the reflux assembly are adopted for hydraulic stirring, the filtered liquid frying waste oil is loaded in the settling tank 3, and the reflux assembly is started so that the liquid frying waste oil at the middle bottom of the settling tank 3 is pumped out and is input again from the top of the settling tank 3, thereby realizing the reflux circulation of the liquid frying waste oil in the settling tank 3.
Specifically, in the hydraulic stirring operation process, after the reflux pump is started, the liquid frying waste oil at the bottom in the settling tank 3 can be pumped out, the liquid frying waste oil flowing out from the reflux outlet flows into the settling tank 3 from the reflux inlet 304 after flowing through the reflux pipe 6, so that the reflux circulation of the liquid frying waste oil is realized, the high-speed liquid frying waste oil flows in from the top of the settling tank 3 to form large impact, the hydraulic stirring effect is realized, the heating efficiency of the liquid frying waste oil can be improved, the space height is also saved, the upper and lower stacking arrangement of the oven 1 and the settling tank 3 is facilitated, and the liquid frying waste oil is convenient to automatically flow into the settling tank 3.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, a plurality of simple variants of the technical proposal of the invention can be carried out, comprising that each specific technical feature is combined in any suitable way, and in order to avoid unnecessary repetition, the invention does not need to be additionally described for various possible combinations. Such simple variations and combinations are likewise to be regarded as being within the scope of the present disclosure.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (16)
1. A frying waste oil treatment system, characterized in that it comprises:
the device comprises an oven (1), wherein an accommodating space for accommodating solidified frying waste oil is formed in the oven (1), and a filter screen is arranged at the bottom of the accommodating space;
a first heating assembly (2) for heating and melting the solidified frying waste oil into liquid frying waste oil;
a settling tank (3) which is arranged below the oven (1) and is used for containing the liquid frying waste oil flowing in from the oven (1), wherein an oil inlet (301) is arranged at the top of the settling tank (3), and the oil inlet (301) is communicated with the containing space through a filtering hole on the filter screen;
and the second heating assembly (4) is used for heating the liquid frying waste oil to a preset sedimentation temperature so as to enable the liquid frying waste oil to be kept stand for sedimentation to form purified oil.
2. Frying waste oil treatment system according to claim 1, characterized in that the bottom of the settling tank (3) is formed with a return outlet, the top of the settling tank (3) is formed with a return inlet (304), the frying waste oil treatment system further comprises a return assembly comprising a return pipe (6) and a return pump, both ends of the return pipe (6) being connected to the return outlet and the return inlet (304), respectively, the return pump being arranged on the return pipe (6).
3. Frying waste oil treatment system according to claim 2, characterized in that the bottom of the settling tank (3) is provided with an oil outlet (302), the frying waste oil treatment system further comprising an oil delivery pipe (501) and a recovery tank, both ends of the oil delivery pipe (501) being connected to the oil outlet (302) and to the recovery tank, respectively, the recovery tank being adapted to store the purified oil (15).
4. A frying waste oil treatment system according to claim 3, wherein said oven (1) comprises an inner layer casing (101) and an outer layer casing (102), said accommodation space is formed inside said inner layer casing (101), an interlayer cavity (103) is formed between said inner layer casing (101) and said outer layer casing (102), said first heating assembly (2) is provided in said interlayer cavity (103) and can heat air in said interlayer cavity (103), and an air outlet hole for letting out heated air is formed on a side wall of said inner layer casing (101).
5. Frying waste oil treatment system according to claim 4, characterized in that the top wall of the inner tank (101) is provided with an air inlet, the frying waste oil treatment system further comprises a fan (7) arranged in the interlayer cavity (103) and used for sucking air in the accommodating space into the interlayer cavity (103), and an air duct (104) is formed between the air outlet end of the fan (7) and the air outlet hole.
6. Frying waste oil treatment system according to claim 4, characterized in that the oven (1) further comprises a heat-insulating layer (8) arranged outside the outer casing (102).
7. A frying waste oil treatment system according to claim 3, characterized in that the frying waste oil treatment system further comprises a steam source, the second heating assembly (4) comprising a steam delivery pipe (401), one end of the steam delivery pipe (401) being connected to the steam source, the other end of the steam delivery pipe (401) extending into the liquid frying waste oil.
8. Frying waste oil treatment system according to claim 7, characterized in that said second heating assembly (4) further comprises a steam heating pipe (402) connected to said steam source, said steam heating pipe (402) being arranged on the outer side wall of said settling tank (3) and being capable of directly heating the side wall of said settling tank (3).
9. A frying waste oil treatment system according to claim 3, characterized in that the top of the settling tank (3) is provided with a breather valve (9) for balancing the internal air pressure of the settling tank (3) with the external air pressure.
10. A frying waste oil treatment system according to claim 3, further comprising a plurality of oil drums (18) for containing the solidified frying waste oil and a transport assembly (10) for transporting the oil drums (18) to the containing space.
11. The waste frying oil treatment system according to any one of claims 3-10, further comprising a first temperature detector for detecting a temperature of the waste liquid frying oil and a controller in communication with the first temperature detector, the return pump and configured to:
determining that the second heating assembly (4) is in an operating state;
determining that the reflux pump is in a working state;
determining that the temperature of the liquid frying waste oil reaches a first preset temperature,
controlling the second heating assembly (4) to stop working;
and controlling the reflux pump to stop working so as to enable the liquid frying waste oil to be kept stand for settling for a preset time to form the purified oil (15).
12. Frying waste oil treatment system according to claim 11, characterized in that the bottom of the settling tank (3) is provided with a slag outlet (303), the frying waste oil treatment system further comprising a settling debris transfer pipe (13) for transferring settling debris (16) formed after settling in the receiving chamber and a first output pump (12), the first output pump (12) being arranged on the settling debris transfer pipe (13).
13. Frying waste oil treatment system according to claim 12, characterized in that said oil delivery pipe (501) is provided with a second output pump (11), said first output pump (12) and said controller are in communication connection, said controlling said return pump to stop working so as to form said purified oil (15) after a preset time of settling of said liquid frying waste oil, comprises:
after the reflux pump is controlled to stop working for the preset time, the first output pump (12) is controlled to be opened so as to output settled impurities (16) which are formed after settling in the accommodating cavity and are positioned below the purified oil (15);
after the output of the settled debris (16) is completed, the first output pump (12) is controlled to be closed and the second output pump (11) is controlled to be opened so as to convey the purified oil (15) into the recovery tank.
14. Frying waste oil treatment system according to claim 11, characterized in that it further comprises a second temperature detector arranged in said accommodation space for detecting the temperature of the air in said accommodation space, said second temperature detector, said first heating assembly (2) and said controller being in communication connection, said controller being further configured to:
determining that the first heating assembly (2) is in an operating state;
determining that the temperature of the air in the accommodating space reaches a preset temperature;
and controlling the first heating assembly (2) to stop working.
15. A frying waste oil treatment process, characterized in that the frying waste oil treatment process comprises:
first heating operation: heating and melting the solidified frying waste oil into liquid frying waste oil;
and (3) filtering operation: filtering the liquid waste frying oil to form filtered liquid waste frying oil;
and a second heating operation: heating the filtered liquid frying waste oil to a preset sedimentation temperature;
sedimentation operation: standing the liquid frying waste oil with the temperature reaching the preset sedimentation temperature for sedimentation for preset time to form purified oil and sedimentary sundries which are layered up and down;
separation operation: separating the purified oil in the upper layer to obtain the purified oil.
16. The waste frying oil treatment process according to claim 15, further comprising a hydraulic agitation operation performed simultaneously with the second heating operation, the hydraulic agitation operation comprising:
the method comprises the steps of carrying out hydraulic stirring by adopting a settling tank (3) and a reflux assembly, loading filtered liquid frying waste oil in the settling tank (3), and starting the reflux assembly so that the liquid frying waste oil at the middle bottom of the settling tank (3) is extracted and re-input from the top of the settling tank (3), thereby realizing reflux circulation of the liquid frying waste oil in the settling tank (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311148165.9A CN117205662A (en) | 2023-09-06 | 2023-09-06 | Frying waste oil treatment system and frying waste oil treatment process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311148165.9A CN117205662A (en) | 2023-09-06 | 2023-09-06 | Frying waste oil treatment system and frying waste oil treatment process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117205662A true CN117205662A (en) | 2023-12-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311148165.9A Pending CN117205662A (en) | 2023-09-06 | 2023-09-06 | Frying waste oil treatment system and frying waste oil treatment process |
Country Status (1)
| Country | Link |
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| CN (1) | CN117205662A (en) |
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2023
- 2023-09-06 CN CN202311148165.9A patent/CN117205662A/en active Pending
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