CN214032191U - Three-stage dehydration system for anaerobic fermentation residues - Google Patents

Three-stage dehydration system for anaerobic fermentation residues Download PDF

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Publication number
CN214032191U
CN214032191U CN202023110627.2U CN202023110627U CN214032191U CN 214032191 U CN214032191 U CN 214032191U CN 202023110627 U CN202023110627 U CN 202023110627U CN 214032191 U CN214032191 U CN 214032191U
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dehydrator
pipeline
phase material
material outlet
solid
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张培基
姜鹏
左文祥
孙元琨
付斌
周添
刘颖
元晓蕾
曲珍宽
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Qingdao Henotec Environment Technology Co ltd
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Qingdao Henotec Environment Technology Co ltd
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Abstract

The utility model discloses a tertiary dewatering system of anaerobic fermentation residue belongs to fermentation residue and handles technical field. The technical scheme is as follows: comprises a vibration dehydrator, a screw extrusion dehydrator and a centrifugal dehydrator; the solid-phase material outlet of the vibration dehydrator is connected with the material inlet of the screw extrusion dehydrator through a pipeline, and the liquid-phase material outlet of the vibration dehydrator is connected with the material inlet of the middle buffer pool through a pipeline; a solid-phase material outlet of the screw extrusion dehydrator is connected with a material inlet of the biogas residue collecting screw conveyor through a pipeline, and a liquid-phase material outlet of the screw extrusion dehydrator is connected with a material inlet of the middle buffer pool through a pipeline; the material outlet of the middle buffer pool is connected with the material inlet of the centrifugal dehydrator through a pipeline, and the solid-phase material outlet of the centrifugal dehydrator is connected with the material inlet of the biogas residue collecting screw conveyor through a pipeline. The utility model discloses investment cost is low, the running cost is low, dehydration effect is better.

Description

Three-stage dehydration system for anaerobic fermentation residues
Technical Field
The utility model relates to a fermentation residue handles technical field, concretely relates to tertiary dewatering system of anaerobic fermentation residue.
Background
With the gradual progress of domestic garbage recycling, anaerobic fermentation projects for treating kitchen garbage, food and beverage garbage, agricultural wastes and livestock and poultry manure are more and more. Although the anaerobic fermentation realizes the resource recycling of the garbage to a certain extent, the fermentation residues still contain more impurities such as sand, tree branches, plastics and the like, and meanwhile, the fermentation residues have larger particle size and water content of about 70-95 percent and still need to be subjected to subsequent treatment as waste.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned not enough of prior art, the utility model provides a tertiary dewatering system of anaerobic fermentation residue, investment cost is low, the running cost is low, the dehydration effect is better.
The technical scheme of the utility model is that:
the three-stage dehydration system for the anaerobic fermentation residues comprises a vibration dehydrator, a screw extrusion dehydrator and a centrifugal dehydrator; the solid-phase material outlet of the vibration dehydrator is connected with the material inlet of the screw extrusion dehydrator through a pipeline, and the liquid-phase material outlet of the vibration dehydrator is connected with the material inlet of the middle buffer pool through a pipeline; the solid-phase material outlet of the screw extrusion dehydrator is connected with the material inlet of the biogas residue collecting screw conveyor through a pipeline, and the liquid-phase material outlet of the screw extrusion dehydrator is connected with the material inlet of the middle buffer pool through a pipeline; the material outlet of the middle buffer pool is connected with the material inlet of the centrifugal dehydrator through a pipeline, and the solid-phase material outlet of the centrifugal dehydrator is connected with the material inlet of the biogas residue collecting screw conveyor through a pipeline.
Preferably, a pump is arranged on a pipeline between the material outlet of the middle buffer pool and the material inlet of the centrifugal dehydrator.
The beneficial effects of the utility model reside in that:
1) fermentation residue carries out the first order dehydration through the vibration hydroextractor at first, and the solid phase part is inputed to screw rod extrusion hydroextractor again and is carried out the second grade dehydration after being tentatively reduced the moisture content, and this solid phase part is by extrusion dehydration secondary once more and reduces the moisture content, finally passes through centrifugal dehydrator to further centrifugal dehydration to the liquid phase material again, obtains the higher final natural pond liquid of water content, the subsequent processing of being convenient for. So the utility model discloses a system can obtain the solid phase material of lower moisture content and the liquid phase material of higher moisture content, and required consumption is lower, system's wear is littleer when the operation.
2) Firstly, the anaerobic fermentation residue is input into the screw extrusion dehydrator after being subjected to vibration dehydration and decrement of at least 50 percent, the screw extrusion dehydrator with smaller specification can be selected, the system investment can be greatly reduced, the replacement cost of subsequent wearing parts is reduced, and the power consumption is reduced, so that the system operation cost is reduced; and secondly, the performance of the fermentation residues after the first-stage dehydration through the vibration dehydrator tends to be stable, and even if the properties of the fermentation residues at the source are changed, the water content of the solid phase of the fermentation residues after the vibration dehydration can be basically kept unchanged at least, so that the screw extrusion dehydrator does not need to frequently adjust the structure in the operation process after once adjusting the structure.
3) Because the first stage adopts the vibration dehydrator, and the processing mode has no continuity requirement on feeding, a fermentation residue buffer tank is not required to be added at the front end of the vibration dehydrator, and the fermentation residue in the fermentation tank can be directly conveyed into the vibration dehydrator through power equipment such as a plunger pump, so that the material blockage in the fermentation residue buffer tank and an outlet pipeline of the fermentation residue buffer tank is avoided, and the operation stability of the system is improved.
4) The system of the utility model is not only suitable for the high concentration anaerobic fermentation engineering of processing with rubbish from cooking, food and beverage rubbish, agricultural discarded object and beasts and birds excrement and urine as the raw materials, still is applicable to the material front end dehydration engineering of low concentration anaerobic fermentation engineering and similar characteristic equally, and application scope is wide.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of the present invention.
In the figure, 100-vibration dehydrator, 101-vibration dehydrator material inlet, 102-vibration dehydrator solid-phase material outlet, 103-vibration dehydrator liquid-phase material outlet, 200-screw extrusion dehydrator, 201-screw extrusion dehydrator material inlet, 202-screw extrusion dehydrator solid-phase material outlet, 203-screw extrusion dehydrator liquid-phase material outlet, 300-centrifugal dehydrator, 301-centrifugal dehydrator material inlet, 302-centrifugal dehydrator solid-phase material outlet, 303-centrifugal dehydrator liquid-phase material outlet, 401-intermediate buffer tank, 402-biogas residue collection spiral conveyer.
Detailed Description
In order to make the technical solutions in the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
Example 1
As shown in fig. 1, the present embodiment provides a three-stage dehydration system for anaerobic fermentation residues, comprising a vibratory dehydrator 100, a screw extrusion dehydrator 200, and a centrifugal dehydrator 300; the vibration dehydrator solid-phase material outlet 102 is connected with the screw extrusion dehydrator material inlet 201 through a pipeline, and the vibration dehydrator liquid-phase material outlet 103 is connected with the material inlet of the middle buffer pool 401 through a pipeline; the solid-phase material outlet 202 of the screw extrusion dehydrator is connected with the material inlet of the biogas residue collecting screw conveyor 402 through a pipeline, and the liquid-phase material outlet 203 of the screw extrusion dehydrator is connected with the material inlet of the middle buffer tank 401 through a pipeline; the material outlet of the middle buffer pool 401 is connected with the material inlet 301 of the centrifugal dehydrator through a pipeline, the solid-phase material outlet 302 of the centrifugal dehydrator is connected with the material inlet of the biogas residue collecting screw conveyor 402 through a pipeline, and a pump is arranged on the pipeline between the material outlet of the middle buffer pool 401 and the material inlet 301 of the centrifugal dehydrator.
The vibration dehydrator 100 of the present embodiment uses a Thoni GmbH TSR series as a first-stage dehydration apparatus; the screw extrusion dehydrator 200 adopts a Thoni GmbH TSP series as a secondary dehydration device; the centrifugal dehydrator 300 uses a conventional product in the market as a third stage dehydration device to perform a third stage dehydration process on the anaerobic fermentation residue. Meanwhile, the intermediate buffer tank 401 and the biogas residue collecting screw conveyor 402 in the embodiment are used for ensuring the continuous operation of the three-stage dehydration system of the anaerobic fermentation residues.
The working process is as follows:
1) the fermentation residue after anaerobic fermentation is directly pumped to the vibration dehydrator 100 and enters the vibration dehydrator through the material inlet 101 of the vibration dehydrator to be dehydrated for the first stage. The solid phase material of the fermentation residue after vibration dehydration is output through the solid phase material outlet 102 of the vibration dehydrator and enters the screw extrusion dehydrator 200, and the liquid phase material is output through the liquid phase material outlet 103 of the vibration dehydrator and flows into the middle buffer tank 401.
2) The solid phase material output by the vibration dehydrator 100 enters the screw extrusion dehydrator 200 through the screw extrusion dehydrator material inlet 201 to be dehydrated for the second stage, the solid phase material after being dehydrated by screw extrusion is output through the screw extrusion dehydrator solid phase material outlet 202 and enters the biogas residue collection screw conveyor 402, and the liquid phase material is output through the screw extrusion dehydrator liquid phase material outlet 203 and flows into the middle buffer pool 401.
So far, after the fermentation residues are subjected to primary dehydration of the vibration dehydrator and secondary dehydration of the screw extrusion dehydrator, the solid phase moisture content is fully reduced and reduced to the maximum extent; the solid content of the liquid phase is fully reduced, and the requirement of entering a centrifugal dehydrator is met.
3) Liquid phase materials output by the vibration dehydrator 100 and the screw extrusion dehydrator 200 are collected in the middle buffer pool 401, and are conveyed to the centrifugal dehydrator 300 through a pump when needed, and enter the centrifugal dehydrator through a material inlet 301 of the centrifugal dehydrator to be dehydrated for the third stage, solid phase materials after centrifugal dehydration are output through a solid material phase outlet 302 of the centrifugal dehydrator and enter the biogas residue collecting screw conveyor 402, and liquid phase materials are output through a liquid phase material outlet 303 of the centrifugal dehydrator.
4) The solid-phase material output from the solid-phase material outlet 202 of the screw extrusion dehydrator and the solid-phase material output from the solid-phase material outlet 302 of the centrifugal dehydrator are treated as fermentation residues to obtain final biogas residues, and the final biogas residues are output to a rear-end treatment place through a biogas residue collection screw conveyor 402. The liquid phase material output from the liquid phase material outlet 303 of the centrifugal dehydrator is discharged into a rear-end sewage treatment system as final biogas slurry obtained after the fermentation residue is treated.
Example 2
This example gives an example of the processing effect of the system of example 1 on a certain project:
1) a certain high-concentration anaerobic fermentation system outputs 140t of fermentation residues with water content of 82% every day, and after the fermentation residues are dehydrated by the first stage of the vibration dehydrator 100, solid-phase materials with water content of 73% of about 66t are output through the solid-phase material outlet 102 of the vibration dehydrator, and liquid-phase materials with water content of 90% of about 74t are output through the liquid-phase material outlet 103 of the vibration dehydrator.
So far, 140t of fermentation residue had been reduced to 66t of solid phase material, with a reduction rate of 53%. Compare the direct processing mode that gets into screw extrusion hydroextractor 200 and carry out the first order dehydration of fermentation residue, the utility model provides a screw extrusion hydroextractor 200 rated treatment capacity of tertiary dewatering system apolegamy can reduce 50% at least, and investment and running cost can reduce by a wide margin.
2) The solid-phase material with the water content of 66t and the water content of 73 percent enters a screw extrusion dehydrator 200 for secondary dehydration, and then the solid-phase material with the water content of 61 percent is output by 39t through a solid-phase material outlet 202 of the screw extrusion dehydrator, and the liquid-phase material with the water content of 90 percent is output by 27t through a liquid-phase material outlet 203 of the screw extrusion dehydrator.
3) The 74t liquid phase material with the water content of 90% output by the vibration dehydrator 100 and the 27t liquid phase material with the water content of 90% output by the screw extrusion dehydrator 200 are collected in the middle buffer tank 401, and the total amount is 101 t. Finally, after the third pole dehydration is carried out by pumping into the centrifugal dehydrator 300, the solid-phase material with the water content of about 38t and 77% is output through the solid-phase material outlet 302 of the centrifugal dehydrator, and the liquid-phase material with the water content of about 63t and 98% is output through the liquid-phase material outlet 303 of the centrifugal dehydrator.
Finally, 140 t's fermentation residue process the utility model provides a tertiary dewatering system handles the back, exports about 77t final natural pond sediment of 69% of average moisture content and 63t final natural pond liquid of 98% of moisture content.
Although the present invention has been described in detail by referring to the drawings in conjunction with the preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and substance of the present invention, and these modifications or substitutions are intended to be within the scope of the present invention/any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (2)

1. Three grade dewatering system of anaerobic fermentation residue which characterized in that:
comprises a vibration dehydrator (100), a screw extrusion dehydrator (200) and a centrifugal dehydrator (300);
a solid-phase material outlet (102) of the vibration dehydrator is connected with a material inlet (201) of the screw extrusion dehydrator through a pipeline, and a liquid-phase material outlet (103) of the vibration dehydrator is connected with a material inlet of the middle buffer pool (401) through a pipeline;
a solid-phase material outlet (202) of the screw extrusion dehydrator is connected with a material inlet of the biogas residue collecting screw conveyor (402) through a pipeline, and a liquid-phase material outlet (203) of the screw extrusion dehydrator is connected with a material inlet of the middle buffer pool (401) through a pipeline;
and a material outlet of the middle buffer pool (401) is connected with a material inlet (301) of the centrifugal dehydrator through a pipeline, and a solid-phase material outlet (302) of the centrifugal dehydrator is connected with a material inlet of the biogas residue collecting screw conveyor (402) through a pipeline.
2. A three stage dewatering system for anaerobic fermentation residues according to claim 1, wherein: a pump is arranged on a pipeline between the material outlet of the middle buffer pool (401) and the material inlet (301) of the centrifugal dehydrator.
CN202023110627.2U 2020-12-21 2020-12-21 Three-stage dehydration system for anaerobic fermentation residues Active CN214032191U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114057514A (en) * 2021-12-01 2022-02-18 中国市政工程华北设计研究总院有限公司 Dry anaerobic biogas residue three-stage dehydration-based powder fertilizer production system and powder fertilizer production method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114057514A (en) * 2021-12-01 2022-02-18 中国市政工程华北设计研究总院有限公司 Dry anaerobic biogas residue three-stage dehydration-based powder fertilizer production system and powder fertilizer production method thereof

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Denomination of utility model: Three stage dehydration system for anaerobic fermentation residue

Effective date of registration: 20211217

Granted publication date: 20210824

Pledgee: Qingdao Huitong Chinese financing Company limited by guarantee

Pledgor: QINGDAO HENOTEC ENVIRONMENT TECHNOLOGY Co.,Ltd.

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Pledgee: Qingdao Huitong Chinese financing Company limited by guarantee

Pledgor: QINGDAO HENOTEC ENVIRONMENT TECHNOLOGY Co.,Ltd.

Registration number: Y2021370010142

PC01 Cancellation of the registration of the contract for pledge of patent right