CN108031147B - Kitchen garbage filtrate deoiling jar and deoiling system thereof - Google Patents
Kitchen garbage filtrate deoiling jar and deoiling system thereof Download PDFInfo
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- CN108031147B CN108031147B CN201810085142.0A CN201810085142A CN108031147B CN 108031147 B CN108031147 B CN 108031147B CN 201810085142 A CN201810085142 A CN 201810085142A CN 108031147 B CN108031147 B CN 108031147B
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- oil removal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/005—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion by thermal diffusion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/0208—Separation of non-miscible liquids by sedimentation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/0208—Separation of non-miscible liquids by sedimentation
- B01D17/0214—Separation of non-miscible liquids by sedimentation with removal of one of the phases
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- 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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Removal Of Floating Material (AREA)
Abstract
The invention provides a kitchen waste filtrate degreasing tank and a degreasing system thereof, wherein the kitchen waste filtrate degreasing tank comprises a tank body; the tank body is internally provided with a water distribution device and a heating device; an oil level observing device is arranged outside the tank body; the water distribution device comprises a liquid inlet pipe arranged on the tank body; one end of the liquid inlet pipe is sequentially connected with the elbow and the reducing pipe; the top of the reducing pipe is provided with a bracket, and the bracket is provided with a reflecting plate; a space is reserved between the reflecting plate and the top of the reducing pipe. The kitchen waste filtrate oil removal tank disclosed by the invention has the advantages of uniform water distribution, energy consumption saving, convenience in observing the oil level in the tank and low water content of discharged oil.
Description
Technical Field
The invention belongs to the field of kitchen waste treatment, and particularly relates to a kitchen waste filtrate oil removal tank and an oil removal system thereof.
Background
The kitchen waste filtrate contains about 3% of animal and vegetable oil, and the swill oil or swill oil contains about 35% -45% of animal and vegetable oil, so that the animal and vegetable oil is required to be effectively separated and recovered as a recyclable resource.
Kitchen waste filtrate subsequently enters an anaerobic system, but grease (long-chain fatty acid) in the kitchen filtrate can inhibit the activity of microorganisms in the anaerobic system, so that the anaerobic effect is affected, and therefore, the kitchen filtrate needs to be deoiled before entering the anaerobic system.
The grease can be fully separated from the water in the filtrate under the heating state (30-70 ℃), and the grease is positioned on the upper layer and the water is positioned on the lower layer due to different densities, so that the separation effect is achieved.
The current oil separation and recovery method in industry is mainly completed by using a three-item decanter centrifuge and a disc centrifuge, and the method is mainly used for reference and edible oil processing industry, but is not suitable for kitchen waste processing industry in fact, and is mainly because the oil content in kitchen waste filtrate is far lower than the oil content in materials of an edible oil processing enterprise, and secondly, all materials of kitchen waste enter the three-item decanter centrifuge, so that the decanter centrifuge is in a high abrasion condition for a long time, the service life of the centrifuge is reduced, and larger energy consumption is brought in the operation process.
Another oil separating and recovering method in the industry at present is a high-temperature wet thermal hydrolysis technology, namely, kitchen waste is completely steamed at high temperature, so that oil is separated from the kitchen waste at high temperature, and then oil is discharged. The method needs to ensure a high-temperature (120-160 ℃) state in the operation process, has higher energy consumption and improves the oil removal cost.
There are few engineering in industry to remove oil by using an oil removal tank, the oil removal tank is a cylindrical tank body with a conical bottom, the upper end removes oil and the lower end discharges water, and the tank body has the following main disadvantages:
1. the tank body is provided with only one water outlet, solid slag and filtrate are discharged together, and a drain pipe is blocked for a long time;
2. the diameter of the liquid level at the oil drain port at the upper end of the tank body is the same as that of the whole tank body, so that the grease layer 15 is thinner, and a large amount of water in kitchen filtrate can be brought out during oil drain, so that the water content of the obtained grease is overlarge;
3. the existing heating mode is that a built-in heating pipe is used for heating, so that the heating pipe can be corroded by kitchen filtrate for a long time, and the problem of uneven heating exists;
4. the water distribution system of the tank body is single in style, and is a common water pipe for water inflow, namely a water pipe with a single pipe diameter, one part of the water distribution system is designed at the bottom of the tank body between outlets of the liquid inlet pipe, the design can enable filtrate to form a horizontal flowing effect at the bottom of the tank body, so that the rising of floatable oil is not facilitated, the other part of the tank body is designed to extend the liquid inlet pipe to the middle and lower parts of the tank body, and the water inflow produced by the design has upward movement speed, so that the produced grease layer 15 is broken through, and the follow-up oil removal is not facilitated;
5. the tank body is in a fully closed state in the operation process, and the position of the grease layer 15 in the tank cannot be visually observed, so that the grease is incompletely degreased or the water content in the grease is too high.
Disclosure of Invention
In view of the above, the invention aims to provide a kitchen waste filtrate oil removal tank which overcomes the defects of the prior art, is uniform in water distribution and energy-saving, is convenient for observing the oil level in the tank, and has low water content of oil discharge.
In order to achieve the above purpose, the technical scheme of the invention is realized as follows:
the kitchen waste filtrate oil removal tank comprises a tank body;
the tank body is internally provided with a water distribution device and a heating device; an oil level observing device is arranged outside the tank body; the water distribution device is positioned at the lower end of the tank body and is L-shaped and arranged in the tank body; the upper end of the water distribution device extends to the position of the heating device, and the top height of the water distribution device is smaller than that of the heating device; the heating device is positioned in the middle of the tank body at a lower position; the oil level observing device is arranged above the heating device;
the oil level observing device comprises an organic glass tube; the upper end and the lower end of the organic glass tube are respectively connected with a first stainless steel communicating tube and a second stainless steel communicating tube through flanges; the first stainless steel communicating pipe is connected with an oil outlet at the top of the tank body, and the second stainless steel communicating pipe is connected with the outer wall of the tank body.
Further, the water distribution device comprises a liquid inlet pipe arranged on the tank body; one end of the liquid inlet pipe is sequentially connected with the elbow and the reducing pipe; the top of the reducing pipe is provided with a bracket, and the bracket is provided with a reflecting plate; a space is reserved between the reflecting plate and the top of the reducing pipe.
Further, one end of the liquid inlet pipe connecting elbow extends to the middle part of the tank body; the elbow is an equal-diameter elbow or a reducing elbow; when the elbow is a reducing elbow, the diameter of the connecting end of the elbow and the liquid inlet pipe is smaller than the diameter of the upper end of the reducing pipe; the central axis of the reducing pipe is vertical to the central axis of the liquid inlet pipe, and the reducing pipe is positioned above the liquid inlet pipe; the water inlet pipe is parallel to the horizontal plane; the bracket is a hexagonal bracket; the support is arranged at the liquid outlet at the top of the reducing pipe in a suspending mode.
Further, the diameter of the lower end of the reducing pipe is smaller than that of the upper end of the reducing pipe; the reflecting plate is a cone with the top point at the lower part and the bottom surface at the upper part; the reflecting plate is coaxial with the reducing pipe.
Further, the diameter of the top of the reducing pipe is equal to the height of the top of the reducing pipe and is 1.25-1.50 times of the diameter of the small-caliber end of the reducing pipe; the diameter of the top of the reflecting plate is 1.2-1.4 times of the diameter of the large-caliber end of the reducing pipe.
Further, the included angle between the generatrix of the cone and the bottom surface is 14-20 degrees; the distance between the top of the reflecting plate and the top of the reducing pipe is 0.5-1.0 times of the diameter of the small caliber end of the reducing pipe. In engineering practice, the distance between the top of the reflecting plate and the top of the reducing pipe is preferably 0.25-0.5 m.
Further, the inner diameter of the upper part of the tank body is sequentially reduced from bottom to top, and the inner diameter of the lower part of the tank body is sequentially reduced from top to bottom to form a slag fixing and flow guiding inclined plane; an oil drain pipe which is designed to form a certain gradient with the horizontal plane is arranged at the oil outlet; the bottom of the tank body is provided with a slag discharge port and a drain pipe, and the drain pipe is arranged in parallel with the bottom of the tank body; the liquid inlet pipe is arranged in the middle of the tank body and close to the lower part of the tank body; the organic glass tube is arranged in parallel with the central axis of the tank body.
Furthermore, the upper part and the lower part of the tank body are both cone-shaped; the gradient of the oil discharge pipe is 0.3-0.7%; the top of the oil outlet is provided with a breather valve.
Further, the heating device is positioned between the upper part and the lower part in the tank body, and the heating device is made of stainless steel 316; the heating device is a steam coil, and an inlet and an outlet of the heating device extend out of the tank body.
The invention further aims at providing an oil removal system comprising the kitchen waste filtrate oil removal tank, so that grease in the kitchen waste filtrate can be separated and recovered by using the oil removal tank.
The oil removal system comprises the oil removal cover, wherein at least 2 oil removal tanks are arranged in the oil removal cover; all liquid inlet pipes of the oil removal tanks are communicated with a feed pump, and drain pipes of the oil removal tanks are communicated with a water outlet pump.
Compared with the prior art, the kitchen waste filtrate oil removal tank has the following advantages:
(1) The water distribution device adopts the elbow, the reducing pipe and the reflecting plate, reduces the water flow speed, distributes water uniformly, avoids the formed grease layer 15 from being damaged, has simple manufacturing process of the reflecting plate, is convenient for purchasing the elbow and the reducing pipe, saves time in the whole device installation process, and is suitable for industrial production.
(2) The heating device adopts a local heating mode, does not need to be heated to high temperature, saves energy consumption, has the advantages that the steam coil pipe is made of SS316, is durable and corrosion-resistant, and is quick in heat transfer, so that the temperature of filtrate can be quickly raised; the heating device is convenient to maintain and easy to operate in industrial production.
(3) The oil level observation device is used for observing the oil level in the tank in real time by utilizing the principle of a communicating vessel by connecting the first stainless steel communicating pipe and the second stainless steel communicating pipe outside the tank body, so as to control oil discharge, and solve the problem that the position of the grease layer 15 cannot be observed in real time in the prior art; in addition, the organic glass tube on the oil level observation device is connected with the stainless steel communicating pipe through the flange, so that the design can be convenient to detach when the organic glass tube is stuck with grease and is ambiguous, and only the organic glass tube is detached without replacing the whole device.
(4) The diameter of the cone at the upper part of the tank body is reduced, so that the quality of oil products in the oil discharging process is controlled to a great extent, the low water content of the oil layer 15 is ensured, and the problem of high water content of oil discharging in the prior art is solved.
(5) The oil drain port is designed with a certain gradient, which is favorable for discharging grease, and an external oil pump is not needed, so that the energy consumption is reduced.
(6) The drainage system is designed for separating liquid and slag, the design of a slag guiding inclined plane is added, solid slag is automatically deposited at the bottom of the tank, drain pipes can be prevented from being blocked, and the fault probability is reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding 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 the invention. In the drawings:
fig. 1 is a front view cross-section of a kitchen waste filtrate oil removal tank according to embodiment 1 of the present invention;
fig. 2 is a schematic diagram showing the relative positions of a reflecting plate and a reducing pipe in the structure of a water distribution device in a kitchen waste filtrate oil removal tank according to embodiment 1 of the present invention;
fig. 3 is a front cross-sectional view of an oil removal system including a kitchen waste filtrate oil removal tank according to embodiment 1 of the present invention;
FIG. 4 is an enlarged view of FIG. 3 at A;
fig. 5 is a top view of the degreasing system comprising the kitchen waste filtrate degreasing tank according to embodiment 1 of the present invention;
FIG. 6 is an enlarged view at B in FIG. 5;
fig. 7 is a front view cross-section of a kitchen waste filtrate oil removal tank according to embodiment 2 of the present invention;
fig. 8 is a schematic structural diagram of a water distribution device in a kitchen waste filtrate oil removal tank according to embodiment 2 of the present invention;
fig. 9 is a front sectional view of an oil removal system including a kitchen waste filtrate oil removal tank according to embodiment 2 of the present invention.
Reference numerals illustrate:
1-a tank body; 2-a water distribution device; 201-a liquid inlet pipe; 202-elbow; 203-reducing pipe; 204-a bracket; 205-a reflective plate; 3-a heating device; 301-inlet; 302-outlet; 4-oil level observation means; 401-a first stainless steel communicating tube; 402-plexiglass tubing; 403-a second stainless steel communicating tube; 5-slag fixing and guiding inclined planes; 6-an oil outlet; 7-oil discharge pipe; 8-a slag discharge port; 9-a drain pipe; 10-breathing valve; 11-a first oil removal tank; 12-a feed pump; 13, a water outlet pump; 14-a second oil removal tank; 15-a grease layer; 16-an oil-water mixing layer; 17-working area; 18-a base; 19-supporting rectangular steel; 20-mounting rack; 21-oil removal cover.
Detailed Description
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in a specific case.
The invention will be described in detail below with reference to the drawings in connection with embodiments.
Example 1
As shown in fig. 1 and 2, a kitchen waste filtrate oil removal tank comprises a tank body 1;
a water distribution device 2 and a heating device 3 are arranged in the tank body 1; an oil level observation device 4 is arranged outside the tank body 1; the water distribution device 2 is positioned at the lower end of the tank body 1 and is L-shaped and arranged in the tank body 1; the upper end of the water distribution device 2 extends to the position of the heating device 3, and the top height of the water distribution device is smaller than that of the heating device 3; the heating device 3 is positioned in the middle of the tank body 1 at a lower position; above the heating device 3 is the oil level observing device 4;
the oil level observation device 4 comprises a plexiglass tube 402; the upper end and the lower end of the organic glass tube 402 are respectively connected with a first stainless steel communicating tube 401 and a second stainless steel communicating tube 403 through flanges; the first stainless steel communicating pipe 401 is connected with the oil outlet 6 at the top of the tank body 1, and the second stainless steel communicating pipe 403 is connected with the outer wall of the tank body 1.
The oil level observation device 4 is connected with the first stainless steel communicating pipe 401, the second stainless steel communicating pipe 403 and the organic glass pipe 402 outside the tank body, and can observe the oil level in the tank in real time by using a communicating vessel principle, thereby controlling oil discharge, and solving the problem that the position of the grease layer 15 cannot be observed in real time in the prior art.
The water distribution device 2 comprises a liquid inlet pipe 201 arranged on the tank body 1; one end of the liquid inlet pipe 201 is sequentially connected with the elbow 202 and the reducing pipe 203 so as to change the inner diameter of the liquid inlet, realize the diameter expansion of the pipeline, and reduce the water flow speed under the same flow condition, thereby reducing the hydraulic impact in the tank and preventing the formed grease layer 15 from being broken; in order to realize the liquid inlet diversion, the phenomenon that the existing grease layer 15 is scattered due to the vertical upward speed after the inflow water flows out of the liquid inlet pipe 201 is avoided, a support 204 is arranged at the top of the reducing pipe 203, a reflecting plate 205 is arranged on the support 204, and a space is reserved between the reflecting plate 205 and the top of the reducing pipe 203. The reflecting plate 205 changes the flowing direction of the inflow water, and distributes water uniformly, so that the filtrate can be distributed in the water layer of the tank body 1 uniformly, the residence time of the filtrate in a heating area is prolonged, the filtrate is heated, and grease in the filtrate floats upwards; the reflecting plate 205 has simple manufacturing process, the reducing pipe 203 and the elbow 202 are convenient to purchase, and the whole device is time-saving in installation process and suitable for industrial production.
In order to enhance the fluidity of the liquid in the water layer in the tank body 1 and accelerate the floating of grease; one end of the liquid inlet pipe 201 connected with the elbow 202 extends to the middle part of the tank body 1; the elbow 202 is a reducing elbow, and the diameter of the connecting end of the elbow with the liquid inlet pipe 201 is smaller than the diameter of the upper end of the reducing pipe 203; the central axis of the reducing pipe 203 is perpendicular to the central axis of the liquid inlet pipe 201, and the reducing pipe 203 is positioned above the liquid inlet pipe 201; the water inlet pipe 1 is parallel to the horizontal plane; the bracket 204 is a hexagonal bracket; the bracket 204 is suspended and installed at the liquid outlet at the top of the reducing pipe 203.
The diameter of the lower end of the reducing pipe 203 is smaller than that of the upper end; the reflecting plate 205 is a cone with the top point at the lower part and the bottom surface at the upper part; the reflecting plate 205 is coaxial with the reducing pipe 203.
The diameter of the top of the reducing pipe 203 is equal to the height of the top of the reducing pipe, and is 1.35 times of the diameter of the small-caliber end of the reducing pipe 203; the diameter of the top of the reflecting plate 205 is 1.30 times the diameter of the large diameter end of the reducing pipe 203.
The included angle between the bus of the cone and the bottom surface is 17 degrees; the distance between the top of the reflecting plate 205 and the top of the reducing pipe 203 is 1.1 times of the diameter of the small-caliber end of the reducing pipe 203.
The inner diameter of the upper part of the tank body 1 is sequentially reduced from bottom to top to form the top of the tank body 1, the inner diameter of the lower part of the tank body 1 is sequentially reduced from top to bottom to form a solid slag guide inclined plane 5, and the solid slag guide inclined plane 5 enables waste slag in filtrate to automatically slide downwards on the inclined plane of the bottom of the tank body 1 under the action of gravity and deposit at a slag discharge port 8; the highest position in the middle of the top of the tank body 1 is provided with the oil outlet 6, and the oil outlet 6 is provided with an oil discharge pipe 7 which is designed to form a certain gradient with the horizontal plane; the bottom of the tank body 1 is provided with a slag discharge port 8 and a drain pipe 9, the slag discharge port 8 is positioned at the lowest position in the middle of the bottom of the tank body 1, the drain pipe 9 is arranged in parallel with the bottom of the tank body 1, and the drain pipe 9 and the bottom of the tank body 1 adopt uniform inclination angles, so that the drain pipe 9 cannot be blocked by solid slag according to the action of gravity, and the drain pipe 9 can be drained when the liquid level in the tank body 1 is higher than the drain pipe 9 according to the principle of a communicating vessel, so that the phenomenon of blocking of the drain pipe 9 cannot occur; the liquid inlet pipe 201 is arranged in the middle of the tank body 1 and near the lower part of the tank body 1; the plexiglas tube 402 is disposed parallel to the central axis of the tank 1. The inner diameter of the lower part of the tank body 1 is sequentially reduced from top to bottom, so that the liquid and solid slag can be conveniently discharged together, the slag discharge opening 8 and the water discharge pipe 9 can be used for ensuring that the liquid and the solid slag are discharged separately, and the problem of blockage of the water discharge pipe 9 can be avoided.
The upper part and the lower part of the tank body 1 are both cone-shaped; the gradient of the oil discharge pipe 7 is 0.5%, so that the oil discharge is facilitated according to the action of gravity, an external oil pump is not needed, and the energy consumption is reduced; the top of the oil outlet 6 is provided with a breather valve 10. The upper part of the tank body 1 is designed to be conical, the inner diameter is reduced from bottom to top, the upper part of the grease layer 15 is gradually thickened, the influence of the oil-water critical layer on the water content of discharged grease is reduced, the quality of the oil in the oil discharging process is greatly controlled, the low water content of the grease layer 15 is ensured, and the problem of high water content of discharged grease in the prior art is solved.
The heating device 3 is positioned between the upper part and the lower part in the tank body 1, and the heating device 3 is made of stainless steel 316; the heating device 3 is a steam coil, and an inlet 301 and an outlet 302 of the heating device 3 extend to the outside of the tank 1. The number of coil layers of the steam coil is 6. The heating device has the advantages that: (1) The integral oil removing process is designed to be unnecessary to be heated to high temperature, so that energy consumption is saved; (2) The whole tank body 1 does not need to be heated in a large area, and a local heating mode is adopted, so that the oil removal temperature can be ensured, and the energy consumption is reduced; (3) The steam coil pipe is made of SS316, is corrosion-resistant for a long time, and is quick in heat transfer, so that the temperature of filtrate can be quickly raised; (4) If faults occur, the maintenance is convenient, and the industrial production operation is easy.
A base 18 is arranged at the bottom of the tank body 1, and a supporting rectangular steel 19 is arranged below the base 18.
The working process of the oil removal tank in the embodiment is as follows:
the kitchen filtrate is exuded liquid from a kitchen waste receiving hopper, contains floatable oil in the kitchen waste, and is extracted and recovered according to the principles of different oil and water densities.
Kitchen filtrate is pumped into the oil removal tank body 1 through a water distribution system by a feed pump, the operation process of the water distribution system is that the filtrate enters the liquid inlet pipe 201, the filtrate enters the tank body 1 at the tail end of the reducing pipe 203 through the elbow 202 and the reducing pipe 203, and the reflecting plate 205 is positioned above the tail end of the reducing pipe 203, so that water inlet and water distribution can be uniform. After the filtrate enters the tank body 1, the tank body 1 is static for a certain time for layering, a working area 17, an oil-water mixing layer 16 and an oil layer 15 are formed in the tank body from bottom to top due to different densities of oil and water, finally, the oil gradually forms an oil film above the liquid, the position and the thickness of the oil film are checked through the oil level observation device 4, and the oil is discharged from the oil discharge pipe 7 to finish oil removal. In the resting process, the solid slag in the filtrate can slowly subside, and the solid slag falling to the bottom of the tank body 1 can slide down to the slag discharge port 8 along the inclined plane on the solid slag diversion inclined plane 5 for deposition. And after oil is discharged, the water discharge is started, at the moment, the valve at the 9 ports of the water discharge pipe is opened, the equipment starts to discharge water, at the moment, the solid slag in the water phase can discharge water, and after the water discharge is finished, the valve is closed. The slag discharging port 8 is not opened along with the opening of the water discharging port valve, and in normal case, when solid slag is deposited at a certain amount on the bottom of the tank body 1, uniform slag discharging is performed.
As shown in fig. 3-6, the oil removal system comprising the kitchen waste filtrate oil removal tank comprises an oil removal cover 21, wherein 2 oil removal tanks are arranged in the oil removal cover 21; the two oil removal tanks are a first oil removal tank 11 and a second oil removal tank 14 respectively; the liquid inlet pipes 201 of the first oil removal tank 11 and the second oil removal tank 14 are communicated with a feed pump 12, and the drain pipes 9 of the first oil removal tank 11 and the second oil removal tank 14 are communicated with a water outlet pump 13. The first oil removal tank 11 and the second oil removal tank 14 are both installed on the installation frame 20 through the supporting rectangular steel 19, and the lower end of the oil removal cover 21 is installed on the installation frame 20.
The specific operation steps of the oil removal system in this embodiment are as follows:
1. the oil removal system operation preparation stage:
1.1, starting a feed pump 12 of the first oil removal tank 11, pumping kitchen filtrate into the first oil removal tank 11 through a liquid inlet pipe 201, and closing the feed pump 12 of the first oil removal tank 11 when the liquid level reaches a certain height (the process parameter is lower than the liquid level of an overflow port);
1.2, starting a feed pump 12 of the second oil removal tank 14, pumping kitchen filtrate into the second oil removal tank 14, and closing the feed pump 12 when the liquid level reaches a certain height (the process parameter-the liquid level height below the overflow port);
1.3, the first and second degreasing tanks 11 and 14 are kept constant temperature by a steam coil, and the temperature is maintained at 35-40 ℃.
2. The oil removal system operation stage:
2.1, when the first oil removal tank 11 is full of liquid level, standing for a certain time at constant temperature, and forming an oil layer 15 on the surface of the kitchen filtrate to realize oil-water separation;
2.2, after standing for a period of time, starting a feed pump 12 of the first oil removal tank 11, pumping kitchen filtrate with a certain capacity into the first oil removal tank 11, wherein the liquid level in the tank is increased at the moment, and discharging the grease layer 15 through the oil discharge pipe 7;
2.3, closing the feeding pump 12 of the first oil removal tank 11 after feeding is completed;
2.4, the water outlet pump 13 of the first oil removal tank 11 is started to discharge the water phase in the tank, and when the liquid level in the tank is reduced by a certain height, the water outlet pump 13 of the first oil removal tank 11 is closed.
2.5, the feed pump 12 of the first oil removal tank 11 is turned on for the second time, when the liquid level in the tank rises to the designated height (the process parameter-the liquid level below the overflow port), the feed pump 12 is turned off, the first oil removal tank 11 completes an oil removal period, and a new operation period is continued from the step 2.2 to the step 2.5;
2.6, when the first oil removal tank 11 is in the step 2.2, the second oil removal tank 14 is in the layering static process;
and 2.7, when the layering rest time of the second oil removal tank 14 is over, continuing to operate with the steps 2.2-2.5 of the first oil removal tank 11.
2.8, the slag discharging opening 8 is opened periodically to discharge slag, but the slag discharging opening 8 is not required to be opened every time the water outlet pump 13 operates.
Example 2
The kitchen waste filtrate degreasing tank and the degreasing system thereof in the embodiment are basically the same as those in embodiment 1, and are different in that: as shown in fig. 7-9, the elbow 2 of the water distribution device is an equal-diameter elbow, preferably a 90-degree elbow.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (8)
1. The utility model provides a kitchen garbage filtrate removes oil tank which characterized in that: comprises a tank body (1);
a water distribution device (2) and a heating device (3) are arranged in the tank body (1); an oil level observation device (4) is arranged outside the tank body (1); the water distribution device (2) is positioned at the lower end of the tank body (1), and is L-shaped and arranged in the tank body (1); the upper end of the water distribution device (2) extends to the position of the heating device (3), and the top height of the water distribution device is smaller than that of the heating device (3); the heating device (3) is positioned in the middle of the tank body (1) and at a lower position; the oil level observing device (4) is arranged above the heating device (3);
the oil level observing device (4) comprises a plexiglass tube (402); the upper end and the lower end of the organic glass tube (402) are respectively connected with a first stainless steel communicating tube (401) and a second stainless steel communicating tube (403) through flanges; the first stainless steel communicating pipe (401) is connected with an oil outlet (6) at the top of the tank body (1), and the second stainless steel communicating pipe (403) is connected with the outer wall of the tank body (1);
the water distribution device (2) comprises a liquid inlet pipe (201) arranged on the tank body (1); one end of the liquid inlet pipe (201) is sequentially connected with the elbow (202) and the reducing pipe (203); a bracket (204) is arranged at the top of the reducing pipe (203), and a reflecting plate (205) is arranged on the bracket (204); a space is reserved between the reflecting plate (205) and the top of the reducing pipe (203);
one end of the liquid inlet pipe (201) is connected with the elbow (202) and extends to the middle part of the tank body (1); the elbow (202) is an equal-diameter elbow or a reducing elbow; when the elbow (202) is a reducing elbow, the diameter of the connecting end of the elbow and the liquid inlet pipe (201) is smaller than the diameter of the upper end of the reducing pipe (203); the central axis of the reducing pipe (203) is perpendicular to the central axis of the liquid inlet pipe (201), and the reducing pipe (203) is positioned above the liquid inlet pipe (201); the water inlet pipe is parallel to the horizontal plane; the bracket (204) is a hexagonal bracket; the bracket (204) is arranged at the liquid outlet at the top of the reducing pipe (203) in a suspending way.
2. The kitchen waste filtrate oil removal tank of claim 1, wherein: the diameter of the lower end of the reducing pipe (203) is smaller than that of the upper end; the reflecting plate (205) is a cone with the top point at the lower part and the bottom surface at the upper part; the reflecting plate (205) is coaxial with the reducing pipe (203).
3. The kitchen waste filtrate oil removal tank of claim 2, wherein: the diameter of the top of the reducing pipe (203) is equal to the height of the top of the reducing pipe, and is 1.25-1.5 times of the diameter of the small-caliber end of the reducing pipe (203); the diameter of the top of the reflecting plate (205) is 1.2-1.4 times of the diameter of the large-caliber end of the reducing pipe (203).
4. A kitchen waste filtrate oil removal tank as claimed in claim 3, wherein: the included angle between the bus of the cone and the bottom surface is 14-20 degrees; the distance between the top of the reflecting plate (205) and the top of the reducing pipe (203) is 0.5-1.0 times of the diameter of the small-caliber end of the reducing pipe (203).
5. The kitchen waste filtrate oil removal tank of claim 1, wherein: the inner diameter of the upper part of the tank body (1) is sequentially reduced from bottom to top, and the inner diameter of the lower part of the tank body (1) is sequentially reduced from top to bottom to form a slag fixing and guiding inclined plane (5); an oil discharge pipe (7) which is designed to form a certain gradient with the horizontal plane is arranged at the oil outlet (6); the bottom of the tank body (1) is provided with a slag discharge port (8) and a drain pipe (9), and the drain pipe (9) is arranged in parallel with the bottom of the tank body (1); the liquid inlet pipe (201) is arranged in the middle of the tank body (1) and is close to the lower part of the tank body (1); the organic glass tube (402) is arranged in parallel with the central axis of the tank body (1).
6. The kitchen waste filtrate oil removal tank of claim 5, wherein: the upper part and the lower part of the tank body (1) are both cone-shaped; the gradient of the oil discharge pipe (7) is 0.3-0.7%; the top of the oil outlet (6) is provided with a breather valve (10).
7. The kitchen waste filtrate oil removal tank of claim 5, wherein: the heating device (3) is positioned between the upper part and the lower part in the tank body (1), and the heating device (3) is made of stainless steel 316; the heating device (3) is a steam coil, and an inlet (301) and an outlet (302) of the heating device (3) extend out of the tank body (1).
8. An oil removal device comprising the kitchen waste filtrate oil removal tank as claimed in any one of claims 1 to 7, characterized in that: comprises an oil removing cover (21), wherein at least 2 oil removing tanks are arranged in the oil removing cover (21); all liquid inlet pipes (201) of the oil removal tanks are communicated with a feed pump (12), and all drain pipes (9) of the oil removal tanks are communicated with a water outlet pump (13).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810085142.0A CN108031147B (en) | 2018-01-29 | 2018-01-29 | Kitchen garbage filtrate deoiling jar and deoiling system thereof |
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| CN201810085142.0A CN108031147B (en) | 2018-01-29 | 2018-01-29 | Kitchen garbage filtrate deoiling jar and deoiling system thereof |
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| CN108031147B true CN108031147B (en) | 2023-07-18 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108568152B (en) * | 2018-06-13 | 2023-06-02 | 成都蔚蓝星生物科技有限公司 | Kitchen waste classification and collection device |
| CN111977878A (en) * | 2020-08-11 | 2020-11-24 | 北京高能时代环境技术股份有限公司 | Kitchen garbage leachate grease extraction system |
| CN113845171A (en) * | 2021-08-17 | 2021-12-28 | 北海贯世环保技术股份有限公司 | Tower-shaped oil-water separation device |
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| CN108031147A (en) | 2018-05-15 |
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Denomination of invention: A cooking waste filtrate oil removal tank and its oil removal system Effective date of registration: 20230913 Granted publication date: 20230718 Pledgee: Yisheng (Yixing) Environmental Technology Co.,Ltd. Pledgor: Yisheng (Tianjin) Environmental Technology Co.,Ltd. Registration number: Y2023980056698 |
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