CN215947256U

CN215947256U - Wet anaerobic reaction fermentation tank

Info

Publication number: CN215947256U
Application number: CN202122147767.5U
Authority: CN
Inventors: 何佳伟; 刘晓兰; 陆奕轩
Original assignee: Shanghai Anruobike Environmental Protection Technology Co ltd
Current assignee: Shanghai Anruobike Environmental Protection Technology Co ltd
Priority date: 2021-09-07
Filing date: 2021-09-07
Publication date: 2022-03-04
Anticipated expiration: 2031-09-07

Abstract

The utility model provides a wet anaerobic reaction fermentation tank, wherein a circulating device comprises a circulating outer pipe, at least one first connecting pipe and at least one second connecting pipe, the upper end of the circulating outer pipe is arranged at the top of the fermentation tank, the lower end of the circulating outer pipe is respectively connected with the bottom of the fermentation tank through the first connecting pipe and the second connecting pipe, the first connecting pipe and the second connecting pipe are respectively and correspondingly provided with a circulating inner pipe positioned at the bottom of an inner cavity of the fermentation tank, the first connecting pipe is provided with a first control valve and a circulating pump, the second connecting pipe is provided with a second control valve, and the circulating outer pipe is provided with a third control valve. The wet anaerobic reaction fermentation tank is provided with the circulating devices, at least four circulating inner pipes can be added according to actual conditions and are symmetrically arranged, materials in the tank body can be uniformly mixed, and dead zones are reduced.

Description

Wet anaerobic reaction fermentation tank

Technical Field

The utility model relates to the technical field of environment-friendly equipment, in particular to a wet anaerobic reaction fermentation tank.

Background

Kitchen waste is the general term of food and beverage rubbish and kitchen garbage, is the discarded object that people produced in daily life, includes: the mixture of a plurality of substances such as rice, vegetables, plastics, waste tableware, fruits, grease, napkin and the like left after eating. The kitchen waste has the characteristics of high water content, high salinity and high organic matters, and is a waste which is easy to rot and deteriorate.

At present, the methods for treating the kitchen waste mainly comprise landfill, incineration, anaerobic fermentation, composting and the like. Among them, anaerobic fermentation is widely used due to its advantages of mature and reliable technology, thorough harmless treatment, high resource degree, etc., and is the development direction of the kitchen waste treatment technology in the future. However, anaerobic fermenters also suffer from non-uniform mixing within the tank, low gas production rates, and the like.

SUMMERY OF THE UTILITY MODEL

The object of the present invention is to overcome at least one of the above-mentioned drawbacks of the prior art by providing a wet anaerobic reaction fermenter.

The utility model provides a wet anaerobic reaction fermentation tank which is mainly characterized in that a circulating device comprises a circulating outer pipe, at least one first connecting pipe and at least one second connecting pipe, the upper end of the circulating outer pipe is arranged at the top of the fermentation tank, the lower end of the circulating outer pipe is respectively connected with the bottom of the fermentation tank through the first connecting pipe and the second connecting pipe, the first connecting pipe and the second connecting pipe are correspondingly provided with circulating inner pipes positioned at the bottom of an inner cavity of the fermentation tank, the first connecting pipe is provided with a first control valve and a circulating pump, the second connecting pipe is provided with a second control valve, and the circulating outer pipe is provided with a third control valve.

Preferably, the circulation inner pipes correspondingly connected with the first connecting pipes and the circulation inner pipes correspondingly connected with the second connecting pipes are symmetrically arranged.

Preferably, the bottom of the fermentation tank is a conical bottom.

Preferably, the end of the inner circulation pipe extends to the center of the bottom of the inner cavity of the fermentation tank, and the first connecting pipe is connected with at least one discharge pipe.

Preferably, the side of the top of the fermentation tank is provided with a scum removing port, and the scum removing port is provided with a baffle plate and a scum discharging pipe, wherein the height of the baffle plate is 200-300 mm.

Preferably, the exterior of the fermentation tank is sequentially provided with a rock wool heat-insulating layer and a color steel tile protective layer.

Preferably, the top of the fermentation tank is provided with a breather valve with a fire extinguisher, an emergency relief valve and a positive and negative pressure protector.

Preferably, the top and the bottom of the fermentation tank are respectively provided with a liquid level meter; the bottom side, the middle side and the top side of the fermentation tank are respectively provided with a thermometer.

The wet anaerobic reaction fermentation tank is provided with the circulating devices, at least four circulating inner pipes can be added according to actual conditions and are symmetrically arranged, materials in the tank body can be uniformly mixed, and dead zones are reduced.

Drawings

FIG. 1 is a schematic view of a wet anaerobic reaction fermenter according to the present invention.

FIG. 2 is a schematic structural diagram of a tank and a mouth end in the wet anaerobic reaction fermenter according to the present invention.

FIG. 3 is a schematic view of the structure of a conical bottom in the wet anaerobic reaction fermenter according to the present invention.

Detailed Description

In order to clearly understand the technical contents of the present invention, the following examples are given in detail. It is to be understood that the examples are illustrative of the utility model and are not to be construed as limiting the utility model.

As shown in fig. 1 to 3, the embodiments of the wet anaerobic fermentation tank provided by the present invention employ mechanical stirring and medium-temperature or high-temperature anaerobic fermentation techniques. The fermentation tank is provided with a tank body 1 and a circulating device, the circulating device comprises a circulating outer pipe 25, two first connecting pipes 26 and two second connecting pipes 27, the upper end of the circulating outer pipe 25 is arranged at the top of the fermentation tank, the lower end of the circulating outer pipe 25 is connected with the bottom of the fermentation tank through the first connecting pipes 26 and the second connecting pipes 27 respectively, the first connecting pipes 26 are correspondingly connected with the first circulating inner pipes 7, the second connecting pipes 27 are correspondingly connected with the second circulating inner pipes 6, the circulating inner pipes are located at the bottom of the inner cavity of the fermentation tank, the first connecting pipes 26 are provided with first control valves 21 and circulating pumps 4, the second connecting pipes 27 are provided with second control valves 24, and the circulating outer pipe is provided with a third control valve 23.

Bottom circulation is formed through the first circulation inner pipe, the first connecting pipe, the circulating pump, the second control valve, the second connecting pipe and the second circulation inner pipe; the first circulation inner pipe, the first connecting pipe, the circulation pump and the circulation outer pipe form integral circulation. The second control valve 24 and/or the third control valve 23 can be selectively opened according to actual production conditions to perform bottom circulation and/or whole circulation. A normally open control valve 22 may also be provided on the second connecting pipe.

As shown in fig. 2, in the present embodiment, 2 pairs of the first connection pipe and the second connection pipe are provided through 2 pairs of the interface ends 28, one for one. Other numbers of connecting tubes may be provided as desired. Further, as shown in fig. 2, the circulation inner pipes connected to the first connection pipes are symmetrically arranged with respect to the circulation inner pipes connected to the second connection pipes.

The top of fermentation cylinder sets up mechanical agitator 20, and circulation outer union coupling forms the top circulation, and top circulation and mechanical agitator's stirring has the effect of broken dross to jar body top for jar internal material is more even mixedly, reduces the blind spot. The circulation process is controlled by means of a control valve and a circulation pump 4.

The outlet of the first circulation inner pipe 7 is provided with a control valve 2, the end part of the circulation inner pipe extends to the center of the bottom of the fermentation tank, and the first circulation inner pipe can be respectively connected with a first discharge pipe 9 and a second discharge pipe 10. Wherein, the first discharging pipe is discharged to the follow-up operation through the static pressure of the tank body, and the second discharging pipe can be used for standby.

As shown in figure 3, the bottom of the fermentation tank is a conical bottom, and the angle between the inclined plane of the conical bottom and the ground is preferably 10 degrees. The sand and stone in the tank body can be gathered at the bottom, and can be intensively discharged, so that the sand and stone discharging effect is better.

The bottom of fermentation cylinder still set up inlet pipe 8, inlet pipe 8 department is provided with feeding normally open valve 5.

The side of the top of fermentation cylinder set up and remove dross mouth 13, remove the dross mouth set up the baffle and the dross discharge pipe that highly are 200 ~ 300mm, make the top dross discharge tank in. The liquid level of the scum removing port is designed according to the normal liquid level, the scum is blocked by the baffle, the scum is discharged through the scum discharge pipeline, and the scum can be automatically discharged at the ultra-liquid level in the normal operation process, so that the scum is effectively removed.

The top of the fermentation tank is also provided with a positive and negative pressure protector 16 for controlling the pressure in the tank body and maintaining the normal pressure. In addition, a breather valve 14 with a flame arrester and an emergency relief valve 15 are installed at the top of the fermenter, and the pressure can be adjusted by the breather valve in the event of failure of the positive/negative pressure protector 16. If the operation is wrong, the pressure in the tank is overhigh, or when the positive pressure protector and the negative pressure protector and the breather valve fail, the pressure can be released through the emergency release valve 15.

The top of the biogas pipeline of the fermentation tank is provided with a biogas flowmeter 17 for metering. Remote level gauges 18 are installed at the top and bottom of the fermenter to confirm the liquid level in the fermenter. The bottom side, the middle side and the top side of the fermentation tank are respectively provided with a telemetering thermometer 19 for confirming the temperature in the tank.

The inside of the fermentation tank is provided with a heat exchange coil 11, and the inlet and outlet of the circulating hot water are controlled by the switch of a heat exchange butterfly valve 12. The hot water heats the tank body to raise the temperature of the tank body and heat the tank body to the process temperature.

The outside of fermentation cylinder set gradually rock wool heat preservation and various steel tile protective layer. In addition, the jar body of fermentation cylinder can adopt carbon steel welding mode or concatenation mode, and the tank deck adopts stainless steel, and jar body height-diameter ratio 1: (0.8-1.2), the lining is anticorrosive, and the volume is 5000-10000 m³Is installed on the reinforcing steel barOn the basis of concrete.

The present invention is not limited to the above-described embodiments, but covers all changes and modifications that may be made without departing from the spirit and scope of the utility model. Such variations and modifications are not to be regarded as a departure from the spirit and scope of the utility model, and all such modifications as would be obvious to one skilled in the art are intended to be included within the scope of the following claims.

Claims

1. The utility model provides a wet-type anaerobic reaction fermentation cylinder, its characterized in that, the fermentation cylinder circulating device has, circulating device include circulation outer tube, at least one first connecting pipe and at least one second connecting pipe, the upper end setting of circulation outer tube be in the top of fermentation cylinder, the lower extreme of circulation outer tube pass through respectively first connecting pipe, second connecting pipe with the bottom of fermentation cylinder be connected, first connecting pipe and second connecting pipe all correspond the circulation inner tube that sets up the bottom that is located the inner chamber of fermentation cylinder, first connecting pipe set up first control valve and circulating pump, the second connecting pipe set up the second control valve, the circulation outer tube set up the third control valve.

2. The wet anaerobic reaction fermenter according to claim 1, wherein the circulation inner pipes connected to the first connection pipe are symmetrically disposed with respect to the circulation inner pipes connected to the second connection pipe.

3. The wet anaerobic reaction fermenter according to claim 1, wherein the bottom of the fermenter is tapered.

4. The wet anaerobic reaction fermenter according to claim 1, wherein an end of the inner circulation pipe extends to a center of a bottom of the inner chamber of the fermenter, and the first connection pipe is connected to at least one discharge pipe.

5. The wet anaerobic reaction fermenter according to claim 1, wherein a scum removing port is provided at a side of a top of the fermenter, and the scum removing port is provided with a baffle plate having a height of 200 to 300mm and a scum discharge pipe.

6. The wet anaerobic reaction fermenter according to claim 1, wherein a rock wool insulating layer and a color steel tile protecting layer are sequentially disposed outside the fermenter.

7. The wet anaerobic reaction fermenter according to claim 1, wherein a breather valve with a fire extinguisher, an emergency relief valve, and a positive and negative pressure protector are installed at the top of the fermenter.

8. The wet anaerobic reaction fermenter according to claim 1, wherein a liquid level meter is installed at the top and bottom of the fermenter; the bottom side, the middle side and the top side of the fermentation tank are respectively provided with a thermometer.