CN210103936U - Dry anaerobic fermentation device for kitchen garbage - Google Patents
Dry anaerobic fermentation device for kitchen garbage Download PDFInfo
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- CN210103936U CN210103936U CN201920044870.7U CN201920044870U CN210103936U CN 210103936 U CN210103936 U CN 210103936U CN 201920044870 U CN201920044870 U CN 201920044870U CN 210103936 U CN210103936 U CN 210103936U
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- fermentation
- anaerobic fermentation
- dry anaerobic
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- kitchen waste
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- 239000010813 municipal solid waste Substances 0.000 title abstract description 21
- 230000004151 fermentation Effects 0.000 claims abstract description 138
- 239000000463 material Substances 0.000 claims abstract description 132
- 238000010438 heat treatment Methods 0.000 claims abstract description 23
- 238000011081 inoculation Methods 0.000 claims abstract description 6
- 239000010806 kitchen waste Substances 0.000 claims description 15
- 238000002156 mixing Methods 0.000 claims description 7
- 238000012546 transfer Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 12
- 238000010992 reflux Methods 0.000 description 10
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- 238000010276 construction Methods 0.000 description 6
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- 238000010586 diagram Methods 0.000 description 5
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- 238000006297 dehydration reaction Methods 0.000 description 4
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- 235000013305 food Nutrition 0.000 description 3
- 244000005700 microbiome Species 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000010411 cooking Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
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- 238000009264 composting Methods 0.000 description 1
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- 230000007547 defect Effects 0.000 description 1
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- 238000005265 energy consumption Methods 0.000 description 1
- -1 excrement Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
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- Processing Of Solid Wastes (AREA)
- Treatment Of Sludge (AREA)
Abstract
The utility model provides a dry anaerobic fermentation device of kitchen garbage, include: fermentation cylinder (1), inlet pipe (7) that link to each other with fermentation cylinder (1) top through feed inlet (11) and be located discharge gate (2) of fermentation cylinder (1) bottom, its characterized in that, the quantity more than or equal to 2 of discharge gate (2), and wherein at least one discharge gate (2) link to each other with back flow (6) via ejection of compact valve (3) and backwash pump (5), thereby send into the new material in inlet pipe (7) and the material that has fermented in back flow (6) and mix inoculation in blender (9) that are located fermentation cylinder (1) top, and back flow (6) and inlet pipe (7) further include heating jacket pipe (8) outward.
Description
Technical Field
The utility model relates to a processing apparatus of organic kitchen garbage, more specifically relates to a dry anaerobic fermentation device of organic kitchen garbage.
Background
With the development of Chinese economy, the urbanization process is rapidly advanced, and the urban garbage yield is increased day by day, so that the urban garbage is one of important factors for restricting the healthy development of cities. The municipal refuse mainly refers to solid waste produced in daily life of urban residents or activities providing services for the daily life of the urban residents, and comprises kitchen waste, waste paper, waste plastics, waste fabrics, waste metals, brick and tile residue soil, excrement, waste electrical appliances and the like. The organic part of the urban garbage is called urban organic garbage for short, and mainly comprises kitchen garbage, large supermarkets, farmer market garbage, resident household garbage and the like. Municipal organic waste is treated in many ways, with sanitary landfills, composting, incineration and anaerobic digestion being common. Anaerobic digestion can reduce the pollution of organic garbage and the emission of carbon dioxide, occupies less land, has relatively small secondary pollution to the environment, can generate methane, and is more and more concerned today with energy shortage.
The anaerobic digestion process is divided into a wet method and a dry method. Compared with wet fermentation, dry fermentation has the advantages of small occupied area, low heating energy consumption, low pretreatment requirement, high organic load and the like.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a dry anaerobic fermentation device for kitchen garbage that design science, rational in infrastructure, material handling capacity are big, fermentation is effectual, the gas production rate is high, heat transfer stable, easily promote heats.
In this context, the term "kitchen waste" refers to waste generated in daily life and food processing, food service, unit meal supply and other activities, and includes discarded vegetable leaves, leftovers, fruit peels, egg shells, tea leaves, bones and the like, and the main sources thereof are household kitchens, restaurants, dining halls, markets and other industries related to food processing.
The first aspect of the utility model provides a dry process anaerobic fermentation device for rubbish from cooking, include: fermentation cylinder, the inlet pipe that links to each other through feed inlet and fermentation cylinder top and the discharge gate that is located the fermentation cylinder bottom, its characterized in that, the quantity more than or equal to 2 of discharge gate, and wherein at least one discharge gate links to each other with the back flow via discharge valve and backwash pump, sends into the new material in the inlet pipe and the material that has fermented in the back flow and is located the blender of fermentation cylinder top and mix the inoculation from this, and the back flow further includes heating jacket pipe outside with the inlet pipe.
Therefore in the dry anaerobic fermentation device of the utility model, the unfermented materials (new materials) and the fermented materials are mixed together in the mixer at the top of the fermentation tank, the mixed materials enter from the feed inlet at the top of the fermentation tank, and the new mixed materials naturally flow to the discharge port at the bottom of the fermentation tank along with the reaction time sequence. The fermentation cylinder includes at least two, preferably a plurality of toper discharge gates, and two or a plurality of toper discharge gates ejection of compact simultaneously are convenient for the even decline of misce bene in the fermentation cylinder. In the device that is single discharge gate in fermentation cylinder bottom, the peripheral material descending speed of the jar wall that can appear the fermentation cylinder is slow, and the material descending speed at fermentation cylinder center is fast, appears the short current phenomenon in the fermentation cylinder easily like this, reduces the fermentation efficiency of fermented material, and the material can not fully ferment promptly. The utility model discloses a fermentation cylinder bottom includes two or more toper discharge gates, and when two or more toper discharge gates ejection of compact simultaneously in fermentation cylinder bottom, the peripheral material of jar wall of fermentation cylinder is the same with the falling velocity of flow of fermentation cylinder center material, and the material does not have the short-term phenomenon to appear in the fermentation cylinder like this, and the material has sufficient fermentation time in the fermentation cylinder to improve fermentation material's fermentation efficiency. The discharging is controlled by a discharging valve.
The reflux pipe and the feeding pipe of the dry anaerobic fermentation device are externally provided with a heating sleeve which contains high-temperature heat source materials. The fermented reflux material and the new material are heated outside the pipeline conveyed to the top of the fermentation tank through a sleeve, the fermented reflux material and the new material are arranged in the inner pipe, the heat source is arranged in the sleeve, and the heat is transferred to the material in the inner pipe through the pipe wall of the inner pipe, so that the materials in the reflux pipe and the feeding pipe are heated, and the heat source is not in contact with the heated material. According to a preferred embodiment, the heat source material is water vapor, the heating steam is arranged in the sleeve, the heated material is arranged in the return pipe and the feeding pipe, and the heating steam becomes condensed water after being cooled and is discharged from a drain valve at the bottom of the heating sleeve, so that the condensed water cannot enter the heated material, the water content of the heated material cannot be increased, and the material in the fermentation tank is maintained at a certain solid content rate.
According to another preferred embodiment, the heat source material may also be high temperature thermal oil or high temperature hot gas. When high-temperature heat conduction oil or high-temperature hot gas is added or input into the sleeve, similarly, the heated material is in the return pipe and the feed pipe, after the heat of the high-temperature heat conduction oil or the high-temperature hot gas in the sleeve is transferred to the material in the inner pipe through the pipe wall of the inner pipe, the high-temperature heat conduction oil or the high-temperature hot gas is cooled to become low-temperature heat conduction oil or low-temperature gas, and the low-temperature heat conduction oil or the low-temperature gas is discharged from the bottom of the heating sleeve, so that the heat source material is not mixed with the heated material, the property of the heated material cannot be changed.
The high-temperature heat source material is used for heating the material, so that the temperature of the heated material is increased to 30-60 ℃, wherein the temperature of the medium-temperature anaerobic heated material can be heated to 30-40 ℃, and the temperature of the high-temperature anaerobic heated material can be heated to 50-60 ℃. Anaerobic fermentation requires a temperature range suitable for the survival of anaerobic microorganisms, and thus the temperature range is critical to the efficiency of anaerobic fermentation. If fermentation is not performed in the proper temperature range of the anaerobic microorganisms, the activity of the anaerobic microorganisms is reduced, the fermentation efficiency is reduced, and even fermentation material acidification occurs, so that fermentation failure is caused. In addition, the utility model discloses this kind of adopt heating sleeve pipe indirect heating fresh material and the heating method of fermented material can not change the property of being heated the material, makes anaerobic fermentation can continuously go on.
The material in the fermentation cylinder receives gravity downstream, the material removes the fermentation cylinder bottom and discharges through two or more discharge gates, discharge gate lower part installation control ejection of compact valve, connect discharge pump and backwash pump below the valve, the discharge pump gets into the material discharge fermentation cylinder that has fermented on next step dehydration process, and the backwash pump carries the material that the fermentation cylinder bottom has fermented to the fermentation cylinder top and mixes with fresh material, the material that mixes at fermentation cylinder top gets into in the fermentation cylinder from fermentation cylinder top feed inlet and ferments.
According to a preferred embodiment, in the dry anaerobic fermentation device, the new material in the feeding pipe and the fermented material in the return pipe are fully stirred and mixed in the mixer, and the uniformly mixed material enters the fermentation tank through the feeding hole. The feed inlet is one or more, preferably a plurality of to fermentation material evenly distributed in the fermentation cylinder.
According to a preferred embodiment, the mixer of the present invention can be a mixing and stirring device, or a mixing pipe, or even a mixer shortened to the same feed inlet, as long as the unfermented material and the fermented material can be mixed uniformly. The utility model discloses the blender shortens to under the condition of same feed inlet, and the material after the mixture gets into from the feed inlet at fermentation cylinder top, and the difference in height of feed inlet to jar interior material is more than a meter, and the material falls with certain speed and forms the impact force, makes the material evenly dispersed with the help of the impact force of material whereabouts consequently.
According to a preferred embodiment, the at least one outlet of the dry anaerobic fermentation device is connected to a discharge pump via a discharge valve to discharge the fermented material located at the bottom of the fermentation tank.
According to another preferred embodiment, the two or more outlets are tapered to facilitate discharge.
In addition, dry anaerobic fermentation device still include the marsh gas export that links to each other with fermentation cylinder upper portion to the marsh gas accessible that kitchen garbage produces in fermentation tank fermentation process marsh gas export is discharged and is gone into marsh gas and utilize the system.
The fermentation tank body can be formed by welding steel plates, and construction is facilitated.
The technical effects of the utility model:
first, in the treatment of kitchen waste, the applicant has gone throughMultiple experiments show that the biogas yield of the fermentation tank with a plurality of discharge holes of the utility model is 90-110m3Per ton; the biogas yield of the fermentation tank with the same kitchen garbage single discharge hole is 60-70m3The biogas yield of the fermentation tank with a plurality of discharge ports is improved by about 50 percent compared with the fermentation tank with a single discharge port.
Secondly, as the volume of the fermentation tank increases, the fermentation tank with a plurality of discharge ports has obvious advantages in construction cost compared with the fermentation tank with a single discharge port, and simultaneously, the occupied area is saved, for example, a project for processing 1000 tons of kitchen garbage per day needs the total volume of the fermentation tank to be 30000m33On the left and right, if fermentation with a single outlet requires 10 fermenters with a diameter of 15-20 m and a volume of 3000m3, while if fermentation with multiple outlets requires only one fermenter with a diameter of 40 m and a volume of 30000m 3. The construction cost of the fermentation tank with a plurality of discharge ports is only one third of that of the fermentation tank with a single discharge port, and the floor area of the fermentation tank with a plurality of discharge ports is one fourth of that of the fermentation tank with a single discharge port. The volume increase of single discharge gate fermentation cylinder receives tank body structure's restriction is bigger, can not infinitely enlarge, otherwise the construction cost becomes the exponential increase, and a plurality of discharge gate fermentation cylinders do not receive the restriction of tank body volume increase, and the volume of fermentation cylinder is big more, and is more obvious to the construction cost of a plurality of discharge gate fermentation cylinders and area's advantage.
Thirdly, the solid content of the kitchen garbage before fermentation is 30-50%, the solid content after fermentation is 15-30%, if the kitchen garbage is directly heated by water vapor, the water vapor is cooled to form condensate water, the condensate water is mixed with the fermentation material, after the fermentation material is heated by the water vapor, the solid content of the fermentation material is lower than 10%, and the materials in the fermentation tank are subjected to sand deposition and blockage and scum, so that the fermentation cannot be continuously carried out, and even the fermentation fails. The utility model discloses an anaerobic fermentation device and a method for indirectly heating materials by a heating sleeve obviously improve the fermentation effect.
Therefore, the utility model discloses a dry process anaerobic fermentation device and method for rubbish from cooking have that the material handling capacity is big, fermentation effect is good, the gas production rate is high, heat and transfer stable, reduce construction cost and reduce advantages such as area of heating, consequently can solve present dry process anaerobic fermentation system and move unstability and inefficiency defect.
Drawings
FIG. 1 shows an embodiment of the dry anaerobic fermentation device of the present invention.
FIG. 2 is a distribution diagram of the top feed inlet of the fermentation tank of the dry anaerobic fermentation device corresponding to FIG. 1.
FIG. 3 is another embodiment of the dry anaerobic fermentation device of the present invention.
FIG. 4 shows another embodiment of the dry anaerobic fermentation apparatus of the present invention.
FIG. 5 is a distribution diagram of the top feed inlet of the fermentation tank of the dry anaerobic fermentation device of the present invention corresponding to FIG. 4.
In the attached drawings, 1, a fermentation tank; 2. a discharge port; 3. a discharge valve; 4. a discharge pump; 5. a reflux pump; 6. a return pipe; 7. a feed pipe; 8. heating the sleeve; 9. a mixer; 10. a biogas outlet; 11. and (4) feeding a material inlet.
Detailed Description
Referring to fig. 1, the dry anaerobic fermentation apparatus of the present invention includes a fermentation tank 1, a discharge port 2, a discharge valve 3, a discharge pump 4, a reflux pump 5, a reflux pipe 6, a feed pipe 7, a heating sleeve 8, a mixer 9, a methane outlet 10 and a feed port 11. FIG. 1 shows a schematic diagram of a dry anaerobic fermentation apparatus having two discharge ports, three feed ports, and a mixer as a mixing pipe.
The new material is conveyed to the top of the fermentation tank through a feeding pipe 7, the new material and the return material are converged into a mixer 9 at the top of the fermentation tank together with the fermented material in a return pipe 6, the new material and the return material are respectively conveyed into a pipe at the top of the fermentation tank and heated by high-temperature steam in a heating sleeve pipe, the steam is cooled to form condensate water, the condensate water is discharged through a drain valve, the temperature of the heated material is raised to 30-40 ℃ for medium-temperature anaerobic fermentation, the heated new material and the fermented material are uniformly mixed in the mixer 9 and then fall into the fermentation tank from three feed inlets 11 at the top of the fermentation tank, kitchen waste is fermented in the fermentation tank to generate biogas, and the biogas is discharged from a biogas outlet 10 at the top of the fermentation tank and enters a biogas utilization. The material moves down along with gravity after fermenting in the fermentation cylinder, and the fermentation cylinder bottom comprises two toper discharge gates. When the materials move to a discharge valve 3 at the bottom of the fermentation tank, a part of the materials are discharged out of the fermentation tank through a discharge pump 4, and the materials enter a biogas residue dehydration system; the other part of the materials are conveyed to the top of the fermentation tank from the discharge hole of the fermentation tank through a reflux pump 5 to be mixed with new materials for inoculation. Two toper discharge gates ejection of compact simultaneously are convenient for the mixed material in the fermentation cylinder to descend uniformly.
The heating steam in fig. 1 may be replaced with high temperature heat transfer oil or high temperature hot air.
Referring to fig. 2, it is a distribution diagram corresponding to fig. 1 of the top feed inlet of the fermentation tank of the dry anaerobic fermentation device, wherein the three feed inlets at the top of the fermentation tank are distributed annularly, so that the fermentation material is uniformly distributed in the fermentation tank.
Referring to fig. 3, there is shown a schematic view of a dry anaerobic fermentation apparatus having four discharge ports, three feed ports, and a mixer as a mixing and stirring device.
The new material is conveyed to the top of the fermentation tank through a feeding pipe 7, the new material and the return material are converged into a mixer 9 at the top of the fermentation tank together with the fermented material in a return pipe 6, the new material and the return material are respectively conveyed into a pipe at the top of the fermentation tank and are heated by high-temperature heat conduction oil in a heating sleeve pipe, the heat conduction oil is cooled to be low-temperature heat conduction oil, the high-temperature anaerobic fermentation is carried out by raising the temperature of the heated material to 50-60 ℃ through a drain valve, the heated new material and the fermented material fall into the fermentation tank from three feeding holes 11 at the top of the fermentation tank after being uniformly mixed in the mixer 9, the kitchen waste is fermented in the fermentation tank to generate biogas, and the biogas is discharged from a biogas outlet 10 at the top of. The material moves down along with gravity after fermenting in the fermentation cylinder, and the fermentation cylinder bottom comprises four toper discharge gates. When the materials move to a discharge valve 3 at the bottom of the fermentation tank, a part of the materials are discharged out of the fermentation tank through a discharge pump 4, and the materials enter a biogas residue dehydration system; the other part of the materials are conveyed to the top of the fermentation tank from the discharge hole of the fermentation tank through three reflux pumps 5 to be mixed with new materials for inoculation. The four conical discharge ports discharge materials simultaneously, so that the mixed materials in the fermentation tank can descend more uniformly.
Referring to fig. 4, there is shown a schematic view of a dry anaerobic fermentation apparatus having two discharge ports, one feed port, and a mixer as a mixing pipe.
The new material is conveyed to the top of the fermentation tank through a feeding pipe 7, the new material and the return material are converged into a mixer 9 at the top of the fermentation tank together with the fermented material in a return pipe 6, the new material and the return material are respectively conveyed into a pipe at the top of the fermentation tank and heated by high-temperature steam in a heating sleeve pipe, the steam is cooled to form condensate water, the condensate water is discharged through a drain valve, the temperature of the heated material is raised to 30-40 ℃ for medium-temperature anaerobic fermentation, the heated new material and the fermented material are uniformly mixed in the mixer 9 and then fall into the fermentation tank from a feeding hole 11 at the top of the fermentation tank, kitchen waste is fermented in the fermentation tank to generate biogas, and the biogas is discharged from a biogas outlet 10 at the top of the fermentation tank and enters a biogas. The material moves down along with gravity after fermenting in the fermentation cylinder, and the fermentation cylinder bottom comprises two toper discharge gates. When the materials move to a discharge valve 3 at the bottom of the fermentation tank, a part of the materials are discharged out of the fermentation tank through a discharge pump 4, and the materials enter a biogas residue dehydration system; the other part of the materials are conveyed to the top of the fermentation tank from the discharge hole of the fermentation tank through a reflux pump 5 to be mixed with new materials for inoculation. Two toper discharge gates ejection of compact simultaneously are convenient for the mixed material in the fermentation cylinder to descend uniformly.
Referring to fig. 5, it is a distribution diagram of the top feed inlet of the fermentation tank of the dry anaerobic fermentation device of the present invention corresponding to fig. 4, wherein there is only one feed inlet on the top of the fermentation tank.
Claims (9)
1. A dry anaerobic fermentation device for kitchen waste comprises: fermentation cylinder (1), inlet pipe (7) that link to each other with fermentation cylinder (1) top through feed inlet (11) and be located discharge gate (2) of fermentation cylinder (1) bottom, its characterized in that, the quantity more than or equal to 2 of discharge gate (2), and wherein at least one discharge gate (2) link to each other with back flow (6) via ejection of compact valve (3) and backwash pump (5), thereby send into the new material in inlet pipe (7) and the material that has fermented in back flow (6) and mix inoculation in blender (9) that are located fermentation cylinder (1) top, and back flow (6) and inlet pipe (7) further include heating jacket pipe (8) outward.
2. The dry anaerobic fermentation device for kitchen waste according to claim 1, characterized in that the new material in the feeding pipe (7) is mixed with the fermented material in the return pipe (6) in the mixer (9), and the uniformly mixed material enters the fermentation tank (1) through the feeding port (11).
3. The apparatus for dry anaerobic fermentation of kitchen waste according to claim 1, characterized in that the feed inlet (11) is one or more.
4. The apparatus for dry anaerobic fermentation of kitchen waste according to claim 1 or 2, characterized in that the mixer (9) is selected from mixing and stirring devices or mixing pipes.
5. The apparatus for dry anaerobic fermentation of kitchen waste according to claim 4, characterized in that the mixer (9) is shortened to the same inlet opening (11).
6. The dry anaerobic fermentation apparatus for kitchen waste according to claim 1, characterized in that the heating jacket (8) contains a high temperature heat source material selected from high temperature steam, high temperature thermal oil or high temperature hot gas to heat the fermented material in the return pipe (6) and the new material in the feed pipe (7), and heats the material to 30-60 ℃.
7. The dry anaerobic fermentation device for kitchen waste as claimed in claim 6, wherein the temperature of the high temperature steam is 100-300 ℃, the temperature of the high temperature heat transfer oil is 100-500 ℃, and the temperature of the high temperature hot gas is 100-600 ℃.
8. The dry anaerobic fermentation apparatus for kitchen waste according to claim 1, characterized in that the outlet (2) is conical.
9. The apparatus for dry anaerobic fermentation of kitchen waste according to claim 1, characterized in that at least one outlet (2) is connected to a discharge pump (4) via an outlet valve (3) for discharging the fermented material located at the bottom of the fermentation tank (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920044870.7U CN210103936U (en) | 2019-01-11 | 2019-01-11 | Dry anaerobic fermentation device for kitchen garbage |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920044870.7U CN210103936U (en) | 2019-01-11 | 2019-01-11 | Dry anaerobic fermentation device for kitchen garbage |
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| Publication Number | Publication Date |
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| CN210103936U true CN210103936U (en) | 2020-02-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920044870.7U Withdrawn - After Issue CN210103936U (en) | 2019-01-11 | 2019-01-11 | Dry anaerobic fermentation device for kitchen garbage |
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| CN (1) | CN210103936U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111909844A (en) * | 2020-09-03 | 2020-11-10 | 安徽理工大学 | Waste mine biogas fermentation fertilizer making system and use method thereof |
-
2019
- 2019-01-11 CN CN201920044870.7U patent/CN210103936U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111909844A (en) * | 2020-09-03 | 2020-11-10 | 安徽理工大学 | Waste mine biogas fermentation fertilizer making system and use method thereof |
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Granted publication date: 20200221 Effective date of abandoning: 20240524 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20200221 Effective date of abandoning: 20240524 |